EP0722769B1 - Installation for preparing brine - Google Patents

Installation for preparing brine Download PDF

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Publication number
EP0722769B1
EP0722769B1 EP95119676A EP95119676A EP0722769B1 EP 0722769 B1 EP0722769 B1 EP 0722769B1 EP 95119676 A EP95119676 A EP 95119676A EP 95119676 A EP95119676 A EP 95119676A EP 0722769 B1 EP0722769 B1 EP 0722769B1
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EP
European Patent Office
Prior art keywords
brine
salt
storage container
weighing
pipe
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EP95119676A
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German (de)
French (fr)
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EP0722769A1 (en
Inventor
Klaus Fahlbusch
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Weda Dammann und Westerkamp GmbH
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Weda Dammann und Westerkamp GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50Mixing liquids with solids
    • B01F23/59Mixing systems, i.e. flow charts or diagrams

Definitions

  • the invention relates to a device for preparing brine for the preparation of road surfaces when there is a risk of winter icing with a device for mixing salt and water and one with the finished brine feedable storage container.
  • Brine or brine is applied to icy or icy roads sprayed in connection with the spreading of spreading material to the Fix grit on the street surface.
  • the salt concentration of the brine depends on the prevailing temperature choose that the water component of the brine does not freeze itself and smoothness evokes.
  • the spreading services therefore require a salt concentration the respective outside temperature adapted brine, if necessary at short notice In larger quantities.
  • a known device of the type mentioned has a mixing device via an injector through which salt is injected into flowing water becomes.
  • the brine prepared in this way flows out into a storage container where the brine tanks are filled by gritting vehicles.
  • Such a facility works with brine preparation with little power and requires a special salt for injection, which is more expensive than road salt.
  • the concentration of brine in the Brine reservoir problems because of the injector with its low output considerable time is required to concentrate on the amount of brine stored a adjusted value when the outside temperature has dropped significantly to raise.
  • Another known device of the type mentioned (FR-A-25 17 984) has an injector container filled with salt as a mixing device is fed on the bottom with water, which after passing through the salt mass as Brine is transferred to a storage container.
  • the brine can be closed from the storage container Drained for use or by means of a pump via a return line Water supply line in front of the injector tank and returned to the injector tank be introduced to pass through the salt mass again Increase the concentration of the brine.
  • the invention addresses the problem of creating a device that has a high preparation rate, a rapid change in the concentration of the stored Brine enables and works inexpensively.
  • the weighing mixture container enables quick and precise preparation of large batches of brine, as salt flows into a given at high speed Amount of water introduced using cheap, normal road salt can be.
  • the brine can be quickly fed into the storage container by a feed pump are transferred and supplement the brine supply, the brine supply being a Concentration is mediated, which results from the concentrations and amounts of supplied brine batch and the brine reserve contained in the reservoir.
  • the return line enables pumping around the contained in the storage container But also brine for the purpose of equalizing the salt concentration a return of brine from the storage container to the weighing mixture container, which is quickly and highly concentrated by adding salt can be, so that after return of the withdrawn and as a batch concentrated amount of brine in the reservoir contained in this Brine volume particularly quickly and without increasing the total brine volume in the concentration can be increased. Also a reduction in the salt concentration the brine in the reservoir to adapt to an increase in Outside temperature is quick and easy by adding fresh water possible from the weighing mixture container into the storage container.
  • the device for the preparation of brine illustrated in the drawing comprises in particular a weighing mixture container 1, the weighing device of pressure cells 2, strain gauges or the like. can be formed on which are supported by the weighing mixture container 1.
  • the weighing mixture container 1 has an agitator 2 with motor 3, agitator shaft 4 and agitator 5.
  • the outlet 6 of the weighing mixture container 1 is via a with a feed pump 7 provided delivery line 8 with a reservoir 9 for prepared brine 10 connected, at the outlet provided with a feed pump 11 Extraction line 12 is connected.
  • a discharge opens downstream of the feed pump 11 Return line 13 from that to the storage container 9 and to the weighing mixture container 1 and can be optionally connected to them. While the Return line 13 opens directly into the weighing mixture container Connection of the return line 13 to the reservoir 9 a branch line 14 provided, which can be released and closed by a valve 15. A Another valve 16 gives the return line 13 downstream of the branch line 14 Weighing mixture container 1 out or blocks it.
  • a valve 17 Downstream of the outlet of the return line 13 from the extraction line 12 a valve 17 is provided through which the removal line 12 for delivery Brine can be released into a tank 18 of a gritting vehicle 19 (FIG. 2).
  • Another valve 20 is located downstream of the feed pump 7 in the feed line 8 provided between the weighing mixture container 1 and the storage container 9, and a further valve 21 is located in a fresh water supply line 22, through which the Wie mixture container 1 can be fed with fresh water.
  • the Pumps 7, 11 each upstream valves 23, 24 are intended to Shut off outlets from the tanks 1.9 when, for example, maintenance work to be carried out on the pumps.
  • These valves can be used as manual valves be formed, while the other valves are preferably electrical or pneumatically operated automatic valves.
  • a central control device 25 controls all functions of the device and is connected to all valves, drives and measuring devices of the facility, control according to a given program and under evaluation determined measured values.
  • the central control device 25 comprises a computer, the program of which is fed to the mixing container 1 Amounts of water and salt and those discharged via the extraction line 12 Capture brine quantities and, accordingly, at any time those in the Determine the total amount of brine and their salt concentration and can be the basis of the program flow.
  • the reservoir 9 can with a measuring device, not shown Detection of the salt concentration of the brine and a measuring probe for the level determination, which is also not shown. Instead, the storage container can also be equipped with a weighing device be. With a particularly simple design of the device is sufficient it, the reservoir with a minimum and a maximum level measuring device 26.27 to be provided.
  • a flow measuring device (not shown) can be provided in the removal line 12 to measure the amount withdrawn directly.
  • the withdrawal quantity can also be provided as a feed pump by providing a metering pump 11 can be determined.
  • the provision of measuring devices is for the withdrawal quantity not necessary if a computer-based recording of the mixture container 1 supplied brine components and the reservoir 9 is provided with level limit measuring devices 26, 27 when they respond in each case the actual quantity of brine present in the storage container 9 is recorded and from this and from the quantities received in the mixture container Delivery amount of brine can be determined.
  • the weighing mixture container 1 which for example has a batch volume of Can hold 4000 l, first water and then salt in each predetermined amount supplied. This can be done for example by means of a Screw conveyor take place, which in the example of FIG. 1 as an inclined conveyor 28 is formed and by means of a reservoir 29 for salt a discharge screw 30 is loaded.
  • the screw conveyor can, for example also as discharge conveyor 31 to the discharge end of a salt silo 32 be assigned, in which road salt is stored, which at the same time in a Spreading vehicle 19 can be delivered.
  • the simple feed that is preferably supplied to it becomes Road salt is continuously dissolved in the amount of water, which is due to the effect the agitator 2 is accelerated. It is practical with the completion of the salt supply a brine was formed, the salt concentration of which by the specified amounts is set.
  • the finished brine batch is then by the Conveying the conveying line 8 into the reservoir 9 by means of the conveying pump 7, which expediently has a storage volume that is a multiple of Batch volume of the weighing mixture container corresponds. You can do that Connect further preparation processes until the desired target quantity in Storage container 9 is included or the brine level the upper limit transmitter 27 activated.
  • the concentration increases or decreases in the short term is to ensure that in the event of a temperature decrease the Brine does not freeze when spreading on the road surface and to form smoothness contributes, and to prevent that when the temperature rises none unnecessary amount of salt gets on the road.
  • a concentration can be achieved with a full reservoir 9 by transferring a Partial amount of brine via the return line 13 into the weighing mixture container 1 done by adding this subset of salt and a batch with an increased salt concentration is formed, which when mixed with the im Reservoir 9 remaining brine of the combined total desired increased salt concentration mediated. If the desired concentration not with a single batch that has been additionally salted this process can be repeated as often as desired.
  • the weighing mixture container 1 To reduce the concentration, it is sufficient to add the weighing mixture container 1 the amount of water required for the desired change in concentration to supply and convey from this directly into the reservoir 9.
  • the central control device 25 can ensure that only brine with a suitable salt concentration can be found. If the salt concentration the brine in the reservoir 9 has not yet reached the desired value the central control device 25 can open the valve 17 and switch on prevent the pump 11. Will the computer in the central control unit 25 constantly the outside temperature value relevant for the brine concentration, e.g. automatically supplied by an outside temperature measuring device the plant by concentrating or reducing the concentration Always keep brine of a suitable concentration in the storage container 9.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Accessories For Mixers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Steroid Compounds (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Abstract

The assembly is used to prepare a brine soln. in readiness for spraying onto icy roads by mixing salt and water which are held in a tank (9) for subsequent use. The brine is prepared in a combined weighing and mixing vessel (1) with mixer (2) assembly. The vessel (1) outlet is linked to the tank (9) through an outlet (6), pump (7) and pipe (8). The tank (9) outlet pipe and pump (11) has a branch (12) which passes first either back to the tank (9) or to the mixer (1) return pipe (13).

Description

Die Erfindung bezieht sich auf eine Einrichtung zur Zubereitung von Sole für die Präparierung von Straßenoberflächen bei winterlichen Vereisungsgefahren mit einer Vorrichtung zum Mischen von Salz und Wasser und einem mit der fertigen Sole beschickbaren Vorratsbehälter.The invention relates to a device for preparing brine for the preparation of road surfaces when there is a risk of winter icing with a device for mixing salt and water and one with the finished brine feedable storage container.

Sole oder Salzlake wird auf vereiste oder vereisungsgefährdete Straßenoberflächen in Verbindung mit dem Ausbringen von Streugut aufgesprüht, um das Streugut auf der Straßenoberfläche zu fixieren. Die Salzkonzentration der Sole ist dabei in Abhängigkeit von der jeweils herrschenden Temperatur so zu wählen, daß der Wasserbestandteil der Sole nicht selbst gefriert und Glätte hervorruft. Die Streudienste benötigen daher eine in der Salzkonzentration an die jeweilige Außentemperatur angepaßte Sole, und zwar im Bedarfsfalle kurzfristig in größeren Mengen.Brine or brine is applied to icy or icy roads sprayed in connection with the spreading of spreading material to the Fix grit on the street surface. The salt concentration of the brine depends on the prevailing temperature choose that the water component of the brine does not freeze itself and smoothness evokes. The spreading services therefore require a salt concentration the respective outside temperature adapted brine, if necessary at short notice In larger quantities.

Eine bekannte Einrichtung der eingangs genannten Art verfügt als Mischvorrichtung über einen Injektor, durch den Salz in strömendes Wasser injiziert wird. Die auf diese Weise zubereitete Sole strömt in einen Vorratsbehälter, aus dem die Soletanks von Streufahrzeugen befüllt werden. Eine derartige Einrichtung arbeitet bei der Solezubereitung mit nur geringer Leistung und erfordert für die Injektion ein spezielles, im Vergleich zu Streusalz teureres Salz. Bei starken Temperaturschwankungen bereitet die Aufkonzentration von Sole im Solevorratsbehälter Probleme, da der Injektor mit seiner geringen Leistung erhebliche Zeit benötigt, um die Konzentration der bevorrateten Solemenge auf einen bei stark abgesunkener Außentemperatur dieser angepaßten Wert anzuheben. A known device of the type mentioned has a mixing device via an injector through which salt is injected into flowing water becomes. The brine prepared in this way flows out into a storage container where the brine tanks are filled by gritting vehicles. Such a facility works with brine preparation with little power and requires a special salt for injection, which is more expensive than road salt. At The concentration of brine in the Brine reservoir problems because of the injector with its low output considerable time is required to concentrate on the amount of brine stored a adjusted value when the outside temperature has dropped significantly to raise.

Eine weiterhin bekannte Einrichtung der eingangs genannten Art (FR-A-25 17 984) verfügt als Mischvorrichtung über einen Injektor-Behälter, der mit Salz gefüllt ist und bodenseitig mit Wasser beschickt wird, das nach Hindurchtreten durch die Salzmasse als Sole in einen Vorratsbehälter überführt wird. Aus dem Vorratsbehälter kann die Sole zu Gebrauchszwecken abgelassen oder mittels einer Pumpe über eine Rücklaufleitung zur Wasserzulaufleitung vor dem Injektor-Behälter zurückgeführt und erneut in den Injektor-Behälter eingeführt werden, um durch einen erneuten Durchlauf durch die Salzmasse die Konzentration der Sole zu erhöhen.Another known device of the type mentioned (FR-A-25 17 984) has an injector container filled with salt as a mixing device is fed on the bottom with water, which after passing through the salt mass as Brine is transferred to a storage container. The brine can be closed from the storage container Drained for use or by means of a pump via a return line Water supply line in front of the injector tank and returned to the injector tank be introduced to pass through the salt mass again Increase the concentration of the brine.

Die Erfindung befaßt sich mit dem Problem der Schaffung einer Einrichtung, die eine hohe Zubereitungsleistung hat, eine schnelle Konzentrationsänderung der bevorrateten Sole ermöglicht und dabei kostengünstig arbeitet.The invention addresses the problem of creating a device that has a high preparation rate, a rapid change in the concentration of the stored Brine enables and works inexpensively.

Die Erfindung löst das Problem durch eine Einrichtung mit den Merkmalen des Anspruchs 1. Hinsichtlich wesentlicher weiterer Ausgestaltungen wird auf die Ansprüche 2 bis 8 verwiesen.The invention solves the problem by a device with the features of the claim 1. With regard to essential further embodiments, claims 2 to 8 referred.

Der Wiegemischbehälter ermöglicht eine schnelle und zudem genaue Zubereitung von großen Chargen von Sole, da Salz mit hoher Geschwindigkeit in eine vorgegebene Menge an Wasser eingebracht und dabei billiges, normales Streusalz verwendet werden kann. Nach der Zubereitung einer Charge, die durch ein Rührwerk zusätzlich beschleunigt wird, kann die Sole durch eine Förderpumpe schnell in den Vorratsbehälter überführt werden und dort den Solevorrat ergänzen, wobei dem Solevorrat eine Konzentration vermittelt wird, die sich aus den Konzentrationen und Mengen der zugeführten Solecharge und dem im Vorratsbehälter enthaltenen Solevorrat ergibt. Die Rücklaufleitung ermöglicht zum einen ein Umpumpen der im Vorratsbehälter enthaltenen Sole zum Zwecke der Vergleichmäßigung der Salzkonzentration zum anderen aber auch eine Rückführung von Sole aus dem Vorratsbehälter in den Wiegemischbehälter, die dort durch Zuführung von Salz schnell und hoch aufkonzentriert werden kann, so daß nach Rückführung der entnommenen und als Charge aufkonzentrierten Solemenge in den Vorratsbehälter die in diesem enthaltene Solemenge besonders schnell und ohne Erhöhung der Gesamtsolemenge in der Konzentration erhöht werden kann. Auch eine Herabsetzung der Salzkonzentration der Sole im Vorratsbehälter zur Anpassung an einen Anstieg der Außentemperatur ist schnell und unschwer durch Zuführen von Frischwasser aus dem Wiegemischbehälter in den Vorratsbehälter möglich.The weighing mixture container enables quick and precise preparation of large batches of brine, as salt flows into a given at high speed Amount of water introduced using cheap, normal road salt can be. After preparing a batch by an additional agitator is accelerated, the brine can be quickly fed into the storage container by a feed pump are transferred and supplement the brine supply, the brine supply being a Concentration is mediated, which results from the concentrations and amounts of supplied brine batch and the brine reserve contained in the reservoir. The On the one hand, the return line enables pumping around the contained in the storage container But also brine for the purpose of equalizing the salt concentration a return of brine from the storage container to the weighing mixture container, which is quickly and highly concentrated by adding salt can be, so that after return of the withdrawn and as a batch concentrated amount of brine in the reservoir contained in this Brine volume particularly quickly and without increasing the total brine volume in the concentration can be increased. Also a reduction in the salt concentration the brine in the reservoir to adapt to an increase in Outside temperature is quick and easy by adding fresh water possible from the weighing mixture container into the storage container.

Weitere Einzelheiten und Vorteile ergeben sich aus der nachfolgenden Beschreibung und der Zeichnung, in der zwei Ausführungsbeispiele des Gegenstands der Erfindung näher veranschaulicht sind. In der Zeichnung zeigen:

Fig. 1
eine fließschemaartige Darstellung einer Einrichtung zur Solezubereitung nach der Erfindung, und
Fig. 2
eine Darstellung ähnlich Fig. 1 zur Veranschaulichung einer abgewandelten Beschickung.
Further details and advantages emerge from the following description and the drawing, in which two exemplary embodiments of the object of the invention are illustrated in more detail. The drawing shows:
Fig. 1
a flow chart-like representation of a device for brine preparation according to the invention, and
Fig. 2
a representation similar to FIG. 1 to illustrate a modified feed.

Die in der Zeichnung veranschaulichte Einrichtung zur Zubereitung von Sole umfaßt im einzelnen einen Wiegemischbehälter 1, dessen Wiegevorrichtung von Druckmeßdosen 2, Dehnungsmeßstreifen od.dgl. gebildet sein kann, auf denen sich der Wiegemischbehälter 1 abstützt. Der Wiegemischbehälter 1 weist ein Rührwerk 2 mit Motor 3, Rührwerkswelle 4 und Rührwerkzeug 5 auf. Der Auslaß 6 des Wiegemischbehälters 1 ist über eine mit einer Förderpumpe 7 versehene Förderleitung 8 mit einem Vorratsbehälter 9 für zubereitete Sole 10 verbunden, an dessen Auslaß eine mit einer Förderpumpe 11 versehene Entnahmeleitung 12 angeschlossen ist. The device for the preparation of brine illustrated in the drawing comprises in particular a weighing mixture container 1, the weighing device of pressure cells 2, strain gauges or the like. can be formed on which are supported by the weighing mixture container 1. The weighing mixture container 1 has an agitator 2 with motor 3, agitator shaft 4 and agitator 5. The outlet 6 of the weighing mixture container 1 is via a with a feed pump 7 provided delivery line 8 with a reservoir 9 for prepared brine 10 connected, at the outlet provided with a feed pump 11 Extraction line 12 is connected.

Aus der Entnahmeleitung 12 mündet stromab der Förderpumpe 11 eine Rücklaufleitung 13 aus, die zum Vorratsbehälter 9 und zum Wiegemischbehälter 1 zurückgeführt und mit diesen wahlweise verbindbar ist. Während die Rücklaufleitung 13 unmittelbar in den Wiegemischbehälter mündet, ist zur Verbindung der Rücklaufleitung 13 mit dem Vorratsbehälter 9 eine Zweigleitung 14 vorgesehen, die durch ein Ventil 15 freigeb- und verschließbar ist. Ein weiteres Ventil 16 gibt stromab der Zweigleitung 14 die Rücklaufleitung 13 zum Wiegemischbehälter 1 hin frei oder sperrt diese ab.From the extraction line 12, a discharge opens downstream of the feed pump 11 Return line 13 from that to the storage container 9 and to the weighing mixture container 1 and can be optionally connected to them. While the Return line 13 opens directly into the weighing mixture container Connection of the return line 13 to the reservoir 9 a branch line 14 provided, which can be released and closed by a valve 15. A Another valve 16 gives the return line 13 downstream of the branch line 14 Weighing mixture container 1 out or blocks it.

Stromab der Ausmündung der Rücklaufleitung 13 aus der Entnahmeleitung 12 ist ein Ventil 17 vorgesehen, durch das die Entnahmeleitung 12 für eine Abgabe von Sole in einen Tank 18 eines Streufahrzeugs 19 (Fig. 2) freigebbar ist. Ein weiteres Ventil 20 ist stromab der Förderpumpe 7 in der Förderleitung 8 zwischen dem Wiegemischbehälter 1 und dem Vorratsbehälter 9 vorgesehen, und ein weiteres Ventil 21 befindet sich in einer Frischwasserzuleitung 22, durch die der Wiegemischbehälter 1 mit Frischwasser beschickbar ist. Den Pumpen 7,11 jeweils vorgeordnete Ventile 23,24 sind dazu bestimmt, die Auslässe aus den Behältern 1,9 abzusperren, wenn beispielsweise Wartungsarbeiten an den Pumpen durchzuführen sind. Diese Ventile können als Handventile ausgebildet sein, während die übrigen Ventile vorzugsweise elektrisch oder pneumatisch betätigte Automatikventile sind.Downstream of the outlet of the return line 13 from the extraction line 12 a valve 17 is provided through which the removal line 12 for delivery Brine can be released into a tank 18 of a gritting vehicle 19 (FIG. 2). Another valve 20 is located downstream of the feed pump 7 in the feed line 8 provided between the weighing mixture container 1 and the storage container 9, and a further valve 21 is located in a fresh water supply line 22, through which the Wie mixture container 1 can be fed with fresh water. The Pumps 7, 11 each upstream valves 23, 24 are intended to Shut off outlets from the tanks 1.9 when, for example, maintenance work to be carried out on the pumps. These valves can be used as manual valves be formed, while the other valves are preferably electrical or pneumatically operated automatic valves.

Ein Zentralsteuergerät 25 steuert sämtliche Funktionen der Einrichtung und ist mit sämtlichen Ventilen, Antrieben und Meßgeräten der Einrichtung verbunden, um eine Steuerung nach einem vorgegebenen Programm und unter Auswertung ermittelter Meßwerte vorzunehmen. Das Zentralsteuergerät 25 umfaßt einen Computer, dessen Programm die dem Wiegemischbehälter 1 zugeführten Mengen an Wasser und Salz und die über die Entnahmeleitung 12 abgegebenen Solemengen erfassen und dementsprechend jederzeit die in der Einrichtung vorhandene Gesamtsolemenge und deren Salzkonzentration bestimmen und dem Programmablauf zugrunde legen kann.A central control device 25 controls all functions of the device and is connected to all valves, drives and measuring devices of the facility, control according to a given program and under evaluation determined measured values. The central control device 25 comprises a computer, the program of which is fed to the mixing container 1 Amounts of water and salt and those discharged via the extraction line 12 Capture brine quantities and, accordingly, at any time those in the Determine the total amount of brine and their salt concentration and can be the basis of the program flow.

Der Vorratsbehälter 9 kann mit einem nicht näher dargestellten Meßgerät zur Erfassung der Salzkonzentration der Sole versehen sein und auch eine Meßsonde für die Füllstandsermittlung aufweisen, die ebenfalls nicht dargestellt ist. Statt dessen kann der Vorratsbehälter auch mit einer Wiegevorrichtung ausgestattet sein. Bei einer besonders einfachen Ausführung der Einrichtung genügt es, den Vorratsbehälter mit einem Minimal- und einem Maximal-Füllstandsmeßgerät 26,27 zu versehen.The reservoir 9 can with a measuring device, not shown Detection of the salt concentration of the brine and a measuring probe for the level determination, which is also not shown. Instead, the storage container can also be equipped with a weighing device be. With a particularly simple design of the device is sufficient it, the reservoir with a minimum and a maximum level measuring device 26.27 to be provided.

In der Entnahmeleitung 12 kann ein Durchlaufmeßgerät (nicht dargestellt) vorgesehen sein, um die Entnahmemenge direkt zu messen. Die Entnahmemenge kann aber auch durch Vorsehen einer Dosierpumpe als Förderpumpe 11 ermittelt werden. Das Vorsehen von Meßgeräten ist für die Entnahmemenge entbehrlich, wenn eine computermäßige Erfassung der dem Wiegemischbehälter 1 zugeführten Solebestandteile erfolgt und der Vorratsbehälter 9 mit Füllstand-Grenzwertmeßgeräten 26,27 versehen ist, bei deren Ansprechen jeweils die im Vorratsbehälter 9 vorhandene Istmenge an Sole erfaßt und daraus und aus den dem Wiegemischbehälter zugegangenen Mengen die Abgabemenge an Sole ermittelt werden kann.A flow measuring device (not shown) can be provided in the removal line 12 to measure the amount withdrawn directly. The withdrawal quantity can also be provided as a feed pump by providing a metering pump 11 can be determined. The provision of measuring devices is for the withdrawal quantity not necessary if a computer-based recording of the mixture container 1 supplied brine components and the reservoir 9 is provided with level limit measuring devices 26, 27 when they respond in each case the actual quantity of brine present in the storage container 9 is recorded and from this and from the quantities received in the mixture container Delivery amount of brine can be determined.

Dem Wiegemischbehälter 1, der beispielsweise ein Chargenvolumen von 4000 l aufnehmen kann, wird zunächst Wasser und anschließend Salz in jeweils vorgegebener Menge zugeführt. Dies kann beispielsweise mittels eines Schneckenförderers erfolgen, der bei dem Beispiel nach Fig. 1 als Schrägförderer 28 ausgebildet ist und aus einem Vorratsbehälter 29 für Salz mittels einer Austragschnecke 30 beschickt wird. Der Schneckenförderer kann beispielsweise auch als Austragförderer 31 dem Austragende eines Salzsilos 32 zugeordnet sein, in dem Streusalz bevorratet ist, das gleichzeitig auch in ein Streufahrzeug 19 abgegeben werden kann.The weighing mixture container 1, which for example has a batch volume of Can hold 4000 l, first water and then salt in each predetermined amount supplied. This can be done for example by means of a Screw conveyor take place, which in the example of FIG. 1 as an inclined conveyor 28 is formed and by means of a reservoir 29 for salt a discharge screw 30 is loaded. The screw conveyor can, for example also as discharge conveyor 31 to the discharge end of a salt silo 32 be assigned, in which road salt is stored, which at the same time in a Spreading vehicle 19 can be delivered.

Im Wiegemischbehälter 1 wird das diesem bevorzugt zugeführte einfache Streusalz fortlaufend in der Wassermenge aufgelöst, was durch die Wirkung des Rührwerks 2 beschleunigt wird. Praktisch mit Abschluß der Salzzufuhr ist eine Sole entstanden, deren Salzkonzentration durch die Vorgabemengen festgelegt ist. Die fertiggestellte Solecharge wird anschließend durch die Förderleitung 8 mittels der Förderpumpe 7 in den Vorratsbehälter 9 überführt, der zweckmäßig ein Speichervolumen aufweist, das einem Mehrfachen des Chargenvolumens des Wiegemischbehälters entspricht. Daran können sich weitere Zubereitungsvorgänge anschließen, bis die gewünschte Sollmenge im Vorratsbehälter 9 enthalten ist bzw. der Solepegel den oberen Grenzwertmeßgeber 27 aktiviert.In the weighing mixture container 1, the simple feed that is preferably supplied to it becomes Road salt is continuously dissolved in the amount of water, which is due to the effect the agitator 2 is accelerated. It is practical with the completion of the salt supply a brine was formed, the salt concentration of which by the specified amounts is set. The finished brine batch is then by the Conveying the conveying line 8 into the reservoir 9 by means of the conveying pump 7, which expediently has a storage volume that is a multiple of Batch volume of the weighing mixture container corresponds. You can do that Connect further preparation processes until the desired target quantity in Storage container 9 is included or the brine level the upper limit transmitter 27 activated.

Da die Salzkonzentration der Sole eine temperaturabhängige Größe darstellt, kommt es vor, daß die Konzentration kurzfristig zu erhöhen oder herabzusetzen ist, um sicherzustellen, daß im Falle einer Temperaturerniedrigung die Sole beim Ausbringen auf der Straßenoberfläche nicht gefriert und zur Glättebildung beiträgt, und um zu verhindern, daß bei Temperaturerhöhung keine unnötige Menge an Salz auf die Straße gelangt.Since the salt concentration of the brine is a temperature-dependent variable, it happens that the concentration increases or decreases in the short term is to ensure that in the event of a temperature decrease the Brine does not freeze when spreading on the road surface and to form smoothness contributes, and to prevent that when the temperature rises none unnecessary amount of salt gets on the road.

Eine Aufkonzentration kann bei vollem Vorratsbehälter 9 durch Überführen einer Teilmenge an Sole über die Rücklaufleitung 13 in den Wiegemischbehälter 1 dadurch erfolgen, daß dieser Teilmenge Salz zugeführt und eine Charge mit einer erhöhten Salzkonzentration gebildet wird, die bei Vermischen mit der im Vorratsbehälter 9 verbliebenen Solemenge der vereinigten Gesamtmenge die gewünschte erhöhte Salzkonzentration vermittelt. Sofern die gewünschte Aufkonzentration nicht mit einer einzigen, zusätzlich mit Salz versetzten Charge erzielt werden kann, läßt sich dieser Vorgang beliebig wiederholen.A concentration can be achieved with a full reservoir 9 by transferring a Partial amount of brine via the return line 13 into the weighing mixture container 1 done by adding this subset of salt and a batch with an increased salt concentration is formed, which when mixed with the im Reservoir 9 remaining brine of the combined total desired increased salt concentration mediated. If the desired concentration not with a single batch that has been additionally salted this process can be repeated as often as desired.

Zur Herabsetzung der Konzentration genügt es, dem Wiegemischbehälter 1 die für die gewünschte Konzentrationsveränderung benötigte Wassermenge zuzuführen und aus diesem unmittelbar in den Vorratsbehälter 9 zu fördern.To reduce the concentration, it is sufficient to add the weighing mixture container 1 the amount of water required for the desired change in concentration to supply and convey from this directly into the reservoir 9.

Werden zwischenzeitlich Teilmengen an Sole aus dem Vorratsbehälter 9 zu Ausbringzwecken auf der Straße entnommen, kann unter Berücksichtigung der jeweils herrschenden Außentemperatur der Solevorrat in dem Vorratsbehälter 9 kurzfristig ergänzt werden, wobei die Salzkonzentration in der im Wiegemischbehälter 1 anzumischenden Charge durch das Programm derart bestimmt wird, daß sich nach Übergang der Charge im Vorratsbehälter 9 Sole einer gewünschten Salzkonzentration befindet.In the meantime, partial amounts of brine from the reservoir 9 are too Spreading purposes taken on the road, taking into account the prevailing outside temperature of the brine supply in the reservoir 9 can be added at short notice, with the salt concentration in the weighing container 1 batch to be mixed determined by the program in this way is that after transfer of the batch in the reservoir 9 brine a desired salt concentration.

Durch das Zentralsteuergerät 25 kann sichergestellt werden, daß nur Sole mit einer passenden Salzkonzentration entnehmbar ist. Sofern die Salzkonzentration der Sole im Vorratsbehälter 9 noch nicht den gewünschten Wert erreicht hat, kann das Zentralsteuergerät 25 das Öffnen des Ventils 17 und das Einschalten der Pumpe 11 unterbinden. Wird dem Computer im Zentralsteuergerät 25 ständig der für die Solekonzentration maßgebliche Außentemperaturwert, z.B. automatisch von einem Außentemperaturmeßgerät, zugeführt, kann die Anlage durch Aufkonzentrieren oder Herabsetzen der Konzentration ständig Sole geeigneter Konzentration im Vorratsbehälter 9 vorhalten.The central control device 25 can ensure that only brine with a suitable salt concentration can be found. If the salt concentration the brine in the reservoir 9 has not yet reached the desired value the central control device 25 can open the valve 17 and switch on prevent the pump 11. Will the computer in the central control unit 25 constantly the outside temperature value relevant for the brine concentration, e.g. automatically supplied by an outside temperature measuring device the plant by concentrating or reducing the concentration Always keep brine of a suitable concentration in the storage container 9.

Claims (8)

  1. An apparatus for preparing brine for the preparation of road surfaces against the dangers of icing in winter, with a device for mixing salt and water and a storage container adapted to be filled with the prepared brine, characterised in that for the preparation of batches of brine, a weighing and mixing container (1) which can be charged with salt and water and which is fitted with an agitating mechanism (2) is provided, the outlet (6) from the weighing-mixing container (1) is connected to the storage container (9) via a delivery pipe (8) fitted with a delivery pump (7), the outlet of the storage container (9) being connected to a draw-off pipe (12) provided with a delivery pump (11) and from which a return pipe (13) leading to the storage container (9) and to the weighing-mixing container (1) is branched off and can be selectively connected to them.
  2. An apparatus according to claim 1, characterised in that the storage container (9) is fitted with a metering device (26, 27) for ascertaining the level of the contents.
  3. An apparatus according to claim 1, characterised in that a weighing device is associated with the storage container (9).
  4. An apparatus according to one of claims 1 to 3, characterised in that the storage container (9) is provided with a metering device for ascertaining the concentration of salt in the brine.
  5. An apparatus according to one of claims 1 to 4, characterised in that the weighing-mixing container (1) can be charged with salt from a stock and by means of a screw conveyor (28; 31) and can be charged with water from a fresh water pipe (22).
  6. An apparatus according to one of claims 1 to 5, characterised in that a central control unit (25) is provided for controlling all the functions of the apparatus in accordance with a predeterminable programme.
  7. An apparatus according to one of claims 1 to 6, characterised in that there is in the draw-off pipe a device for measuring the quantity drawn off.
  8. An apparatus according to claim 7, characterised in that the delivery pump (11) in the draw-off pipe (12) is constructed as a dispensing pump.
EP95119676A 1994-12-24 1995-12-14 Installation for preparing brine Expired - Lifetime EP0722769B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420713U DE9420713U1 (en) 1994-12-24 1994-12-24 Equipment for the preparation of brine
DE9420713U 1994-12-24

Publications (2)

Publication Number Publication Date
EP0722769A1 EP0722769A1 (en) 1996-07-24
EP0722769B1 true EP0722769B1 (en) 1999-08-25

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EP95119676A Expired - Lifetime EP0722769B1 (en) 1994-12-24 1995-12-14 Installation for preparing brine

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EP (1) EP0722769B1 (en)
AT (1) ATE183662T1 (en)
DE (2) DE9420713U1 (en)
DK (1) DK0722769T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420713U1 (en) * 1994-12-24 1995-02-16 Weda-Dammann & Westerkamp GmbH, 49424 Goldenstedt Equipment for the preparation of brine
EP0917906B1 (en) * 1997-06-27 2001-08-29 Henkel-Ecolab snc Process and apparatus for the dissolution of a solid product
DE29811669U1 (en) 1998-06-30 1998-09-17 Kunststoffverarbeitung Reich GmbH, 86932 Pürgen Device for producing and storing sodium chloride solutions
DE102005012886A1 (en) * 2005-03-19 2006-09-28 Schmidt Holding Gmbh Scatter vehicle for winter service

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT351074B (en) * 1976-01-20 1979-07-10 Kahlbacher Anton PROCESSING PLANT FOR THE PRODUCTION OF A BRINE
FR2517984A1 (en) * 1981-12-14 1983-06-17 Lebon Et Cie Sarl Brine prodn. process - circulates water upwards through bed of salt crystals and stores brine in downstream tank
DE3210523A1 (en) * 1982-03-23 1983-10-06 Kustan Kunststoff Industrieanl Ready-mixed acid mixing unit
ATE46622T1 (en) * 1983-12-05 1989-10-15 Anton Kahlbacher TREATMENT PLANT FOR THE PRODUCTION OF BRINE.
DE3518962A1 (en) * 1985-05-25 1986-11-27 Aweco Apparate- und Gerätebau GmbH & Co KG, 7995 Neukirch Mixing appliance for changing the concentration of brine, especially for water softeners
DE8520541U1 (en) * 1985-07-16 1985-10-10 Salzkontor Oberschwaben GmbH, 7965 Ostrach Device for storing and automatically dissolving salt
DE3703254C2 (en) * 1987-02-04 1994-10-27 Licentia Gmbh Mixing device for brine and fresh water
US4955723A (en) * 1990-01-16 1990-09-11 Schneider John R Slurry mixing apparatus with dry powder conveyer
DE9420713U1 (en) * 1994-12-24 1995-02-16 Weda-Dammann & Westerkamp GmbH, 49424 Goldenstedt Equipment for the preparation of brine

Also Published As

Publication number Publication date
ATE183662T1 (en) 1999-09-15
DK0722769T3 (en) 2000-03-20
DE9420713U1 (en) 1995-02-16
DE59506689D1 (en) 1999-09-30
EP0722769A1 (en) 1996-07-24

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