EP2092124A1 - A gritting device for assembly on a carrier vehicle - Google Patents

A gritting device for assembly on a carrier vehicle

Info

Publication number
EP2092124A1
EP2092124A1 EP07846698A EP07846698A EP2092124A1 EP 2092124 A1 EP2092124 A1 EP 2092124A1 EP 07846698 A EP07846698 A EP 07846698A EP 07846698 A EP07846698 A EP 07846698A EP 2092124 A1 EP2092124 A1 EP 2092124A1
Authority
EP
European Patent Office
Prior art keywords
liquid
spreader according
impeller
scattering
feed device
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.)
Granted
Application number
EP07846698A
Other languages
German (de)
French (fr)
Other versions
EP2092124B1 (en
Inventor
Erik Van Gelder
Arjo Reinders
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.)
Schmidt Holding GmbH
Original Assignee
Schmidt Holding 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 Schmidt Holding GmbH filed Critical Schmidt Holding GmbH
Publication of EP2092124A1 publication Critical patent/EP2092124A1/en
Application granted granted Critical
Publication of EP2092124B1 publication Critical patent/EP2092124B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
    • E01H10/007—Mobile apparatus specially adapted for preparing or applying liquid or semi-liquid thawing material or spreading granular material on wintry roads
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C19/201—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels
    • E01C19/202—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels solely rotating, e.g. discharging and spreading drums
    • E01C19/203—Centrifugal spreaders with substantially vertical axis
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C2019/2055—Details not otherwise provided for
    • E01C2019/207—Feeding the distribution means

Definitions

  • the present invention relates to a spreader for mounting on a host vehicle, comprising a spreader hopper stocker with a spreader, a liquid-storing liquid container with a liquid conveyor, a dispenser for moistened spreading material and a feeding device, which of the spreading material conveyor with dry spreading material and is fed by the liquid conveyor with liquid and the dispenser fed with moistened spreading material.
  • the stocked in the scattering material reservoir dry spreader is typically moistened before application or during application. On the one hand, this should improve the adherence of the scattering substance to the road surface and in this way reduce the spreading of the scattering substance by wind or vortex. Furthermore, the moistening serves to accelerate and improve the thawing effect especially of discharged salt.
  • the present invention seeks to provide a spreader of the type described, in its use, a particularly uniform scattering pattern can be achieved while maintaining the predetermined scattering parameters (scatter, spreading density, liquid content).
  • the supply device has a Luftzuströmö réelle in a spreader of the generic type and within the feeder, a fan is arranged, which comprises a motor-driven impeller and generates a rectified to the flow of the feeder with scattering air flow.
  • a fan is arranged, which comprises a motor-driven impeller and generates a rectified to the flow of the feeder with scattering air flow.
  • the present invention it is thus a central feature that an air flow is actively generated in the feeder, namely using a blower intended for this purpose, wherein the air flow induced by the blower passes through the feeder in the direction in which the scattering substance (FIG. without the air flow generated by the blower) the supply of flows through guiding device.
  • the feed device has an air inflow opening, through which the air drawn in by the blower enters the feed device.
  • the dry spreading material and the liquid serving for its moistening are introduced into those airstreams. Through an outlet opening, the air flow, together with the moistened scattering material, leaves the feeding device in order to be applied to the dispensing device (spreading plate or the like).
  • the liquid is not transferred into a gravity-slipping (FR 2661201 A1) or through a screw conveyor (FIG. EP 1491686 A2 and US Pat. No. 3,420,451), except for an air pore volume, a compact amount of litter is introduced, but rather into an air stream which carries the litter with it.
  • the air flowing through the feeder typically still occupies significantly more than 50% of the volume of the feeder, even at the highest possible throughput of material throughput.
  • the volume content of the scattering substance could be between about 10% and 40%, preferably between about 20% and 30%, whereby this proportion decreases correspondingly at a scattering substance throughput reduced compared to the maximum value (eg, well below 1%).
  • the resulting decisive Advantages lie on the one hand in the possibility of optimum moistening of the scattering grains on their entire surface and on the other hand in the possibility of actively influencing the impact velocity of the moistened scattering material on the dispensing device by appropriate control of the speed of the air flow, in particular by setting an impact velocity , which is significantly above that which would result solely by a gravity-induced falling or slipping of the moistened scattering substance on the spreading plate.
  • a first preferred embodiment of the invention is characterized in that the impeller of the fan upstream of the liquid feed is arranged in the feeder.
  • the impeller of the fan causes a turbulence of transported with the airflow scattering particles, which has a favorable effect on the subsequent uniform moistening of the scattering substance. Further, as compared with feeding the liquid upstream of the blower, the risk of wet spreading on the impeller of the blower is reduced.
  • a rotating comminuting tool is arranged downstream of the impeller within the feed device.
  • the comminution tool may have, together with the impeller, rotationally driven striking elements which may be designed, for example, as flat impact plates.
  • the grain size of the scattering material particles is evened out, which contributes to an increased homogeneity of the scattering substance to be applied after its subsequent moistening.
  • the comminution can in individual cases to a pulverization of the scattering material rich, the degree of achievable crushing not least on the volume content of the scattering substance in the air flow (see above) and is in an inverse relationship to this.
  • the subsequent moistening of the scattering substance particles also has an advantageous effect on the previous comminution, in that it promotes the uniform wetting of the scattering material particles on their surface.
  • the advantages set out above are particularly pronounced when the impact elements in Achsrich- tion are distributed over several levels, ie the crushing tool is made multi-level.
  • the comminution tool is designed as a combined comminution and mixing tool in that the liquid is fed into the feed device upstream or in the area of the comminuting tool.
  • An intimate contact between the (comminuted) scattering material particles and the liquid takes place on the rotating impact elements of the combined comminution and mixing tool, it also being possible for liquid droplets to be comminuted or atomized by the impact elements, which in turn has a positive effect on the uniform wetting the surface of the scattering particles shows.
  • the impact elements of the comminuting tool are distributed in the axial direction over several levels, it is particularly favorable if the liquid feed into the feed device takes place downstream of the first striking elements in the throughflow direction. In this case, the first striking elements in the direction of flow serve primarily for the comminution of the not yet moistened scattering material particles, while the impact elements arranged downstream of the liquid feeding effect primarily the intimate wetting of the comminuted scattering material particles.
  • stationary impact and / or guide elements projecting into the flow path are arranged inside the feed device, in particular downstream of the impeller.
  • Such fixed baffle and / or Guide elements reduce the formation of a swirl flow within the feeder and act in this way against centrifugal force deposition of the (moistened) scattering particles from the air stream.
  • the fixed baffle and / or guide elements are distributed in the axial direction over several levels. Are, in the sense described above, provided in the axial direction on several levels arranged rotating impact elements, so particularly preferably change the planes of the rotating impact elements and the planes of the fixed baffle and / or vanes in the flow direction.
  • a further motor-driven impeller is provided downstream of the crushing tool or the combined crushing and mixing tool, which supports and amplifies the air flow caused by the fan.
  • the feeding device of the spreader comprises a mixing housing in which the impeller and optionally the comminuting tool and the further impeller is / are accommodated, into which the scattering material supply and the liquid supply flow and to which an outlet pipe or an outlet hose is connected.
  • the airflow generated by the blower together with the humidified and shredded spreading material transported in it, the mixing housing leaves through the outlet tube or the outlet hose. It is particularly advantageous if the outlet tube or the outlet tube is deformably and / or positionally connected to the mixing housing in order - to change the impingement point of the humidified spreading material transporting air flow on the dispensing device - with fixedly mounted mixing housing.
  • the lower end of the outlet tube or outlet tube can be displaced relative to the dispensing device by means of an actuator. If a further impeller is provided in the sense described above, which supports and amplifies the air flow caused by the fan, then this is preferably arranged adjacent to a bottom of the mixing housing.
  • liquid supply is advantageously carried out in a substantially vertically downwardly flowed through section of the feeder. In this way gravitational asymmetries in the mixing zone are avoided.
  • FIG. 1 shows a side view of the rear area of a
  • Fig. 2 is a perspective, partially cutaway view of the mixing device provided in the spreader apparatus of FIG. 1 together with the internals.
  • the drawing is limited to the reproduction of the rear, lower portion of the spreader, because there manifests the invention and the spreader is otherwise constructed according to the well-known prior art, so that it requires neither a graphic representation, nor an explanation.
  • the shown in the drawing only in the scope of the relevant here lower rear portion, designed to be mounted on a carrier vehicle and prepared spreader comprises a storage of dry scattering material (eg salt, grit, salt-grit mixture) serving silo-like scattering material reservoir 1 with a scattering material -Förder Road 2, which is presently designed as a belt conveyor whose rear, protruding from the litter storage tank end is covered with a housing 3.
  • the spreader comprises a liquid container (not shown) which holds liquid (brine) and is provided with a liquid conveyor.
  • the spreader has a dispenser 4 for moistened spreading material, which in the present case in the commonly used manner comprises a spreading plate 5, which is driven in rotation by a hydraulic motor 6 about a vertical axis.
  • the dispensing device is suspended by means of the carrier 7 on the frame 8 of the spreader.
  • a feed device 9 which is supplied with liquid by the spreading material conveying device 2 with dry scattering material and by the liquid conveying device and feeds the spreading device with moistened scattering substance.
  • the feeder 9 comprises a vertically oriented cylindrical cylindrical mixing housing 10, which is suspended by two straps 11 on the frame 8 of the spreader and, for stiffening the structure, with two brackets 12 connected to the carrier 7 for the dispensing device, wherein the two brackets 12 and the handling when pivoting the entire unit from applicator 4 and feed 9 to facilitate a transport position.
  • the supply means comprises a top connected to the mixing housing transition piece 13, which represents a transition from the wider, approximately rectangular outlet opening for the scattering material in the housing 3 of the belt conveyor to the round cross-section of the mixing housing 10. The mixing material supplied to the mixing housing 10 from the belt conveyor flows through the mixing housing in the vertical direction (arrow A) from top to bottom.
  • a central shaft 14 is arranged, which is rotatably mounted in the bearing sleeve 16 connected to the bottom 15 of the mixing housing 10 and driven in rotation by a motor 17 connected to the bearing sleeve 16 (arrow B).
  • a blower 18 is provided in the mixing housing 10, which comprises a mounted on the shaft 14 near the upper end of the impeller 19.
  • the impeller 19, which rotates together with the shaft 14, generates a top-down air flow L in the feeder 9.
  • the top opening of the transition piece 13 constitutes an air inflow opening through which air can enter the feeder, which, after having moved it Transition piece 13 and the mixing housing 10 has flowed through from top to bottom, the mixing housing 10 through the disposed at the bottom 15 outlet nozzle 20 again leaves.
  • air inlet openings could be provided for example in the wall of the transition piece 13 and / or in the region of the transition from the transition piece 13 to the mixing housing 10.
  • the air stream is added to the discarded by the belt conveyor dry scattering material.
  • the fan 18 is followed by a rotary comminuting tool 21 in the flow direction of the feed device.
  • This comprises a total of eight fixedly connected to the shaft 14, with this rotating impact elements 22, which are designed as flat, each in an axial plane projecting radially from the shaft 14, interchangeable attached to corresponding holders impact plates 23 and arranged in two mutually offset in the axial direction planes ,
  • eight fixed baffle elements 24 are provided, which project from the wall of the mixing housing 10 inwardly into the flow path of the air flow L.
  • the eight baffles 24 are arranged distributed two different axial planes, namely four of them as upper baffles 24 O between the blower 18 and the first in the flow direction, ie the upper impact plates 23 O and four more, offset with respect to the upper baffle elements in the circumferential direction, as a lower baffle elements 24 U between the upper impact plates 23 O and the lower impact plates 23 U.
  • an inlet connection 25 for the supply of liquid into the interior of the mixing housing 10 is connected to the mixing housing.
  • a nozzle is provided, which ensures atomization of the liquid introduced into the mixing housing.
  • the (fast) rotating lower impact plates 23 U cause both an intimate mixing of scattering particles and liquid as well as a further comminution of the liquid droplets and the pre-shredded in the first, upper stage of the comminuting tool 21 scattering particles.
  • a combined comminution and mixing tool is provided in the embodiment shown.
  • another motor-driven impeller 26 is provided, which is also fixedly connected to the shaft 14 and thus rotates together with this.
  • the impeller is designed so that it supports and amplifies the air flow L caused by the fan 18.
  • the outlet nozzle 20 is in an outlet pipe 27 Ü over, which opens just above the spreading plate 5.
  • the relative position of its mouth relative to the spreading plate is variable to influence the spreading pattern.
  • an actuator 29 which acts on the lower end of the outlet pipe.

Abstract

A gritting device for assembly on a carrier vehicle includes a grit container for stocking dry grit (1) with a grit conveying device (2), a liquid container for stocking liquid with a liquid conveying device, an output device (4) for moistened grit, and a supply device (9) which is fed with dry grit from the grit conveying device (2) and with liquid from the liquid conveying device, and the output device is loaded with moistened grit. The supply device (9) has an air inflow opening; within the supply device (9), a blower is arranged which includes a motor-driven impeller and which produces an air stream flowing in the same direction as the grit passing through the supply device (9).

Description

Streugerät zum Aufbau auf ein Trägerfahrzeug Spreader for mounting on a carrier vehicle
Die vorliegende Erfindung betrifft ein Streugerät zum Aufbau auf ein Trägerfahrzeug, umfassend einen trockenen Streustoff bevorratenden Streustoffvorratsbehälter mit einer Streustoff -Fördereinrichtung, einen Flüssigkeit bevorratenden Flüssigkeitsbehälter mit einer Flüssigkeits-Fördereinrichtung, eine Ausbringeinrichtung für befeuchteten Streustoff und eine Zuführeinrichtung, welche von der Streustoff-Fördereinrichtung mit trockenem Streustoff und von der Flüssigkeits-Fördereinrichtung mit Flüssigkeit gespeist wird und die Ausbringeinrichtung mit befeuchtetem Streustoff beschickt.The present invention relates to a spreader for mounting on a host vehicle, comprising a spreader hopper stocker with a spreader, a liquid-storing liquid container with a liquid conveyor, a dispenser for moistened spreading material and a feeding device, which of the spreading material conveyor with dry spreading material and is fed by the liquid conveyor with liquid and the dispenser fed with moistened spreading material.
Bei Streugeräten, wie sie im Rahmen des Winterdienstes zur Glättebekämpfung auf Verkehrsflächen eingesetzt werden, wird der in dem Streustoffvorratsbehälter bevorratete trockene Streustoff typischerweise vor dem Ausbringen bzw. während des Ausbringens befeuchtet. Dies soll zum einen das Anhaften des Streustoffes an der Fahrbahnoberfläche verbessern und auf diese Weise das Verfrachten des Streustoffes durch Wind bzw. Wirbel reduzieren. Weiterhin dient die Befeuchtung dazu, die Tauwirkung insbesondere von ausgebrachtem Salz zu beschleunigen und zu verbessern.In spreaders, such as those used in the winter service for smoothing on traffic surfaces, the stocked in the scattering material reservoir dry spreader is typically moistened before application or during application. On the one hand, this should improve the adherence of the scattering substance to the road surface and in this way reduce the spreading of the scattering substance by wind or vortex. Furthermore, the moistening serves to accelerate and improve the thawing effect especially of discharged salt.
Eines der insoweit in der Praxis auftretenden Probleme besteht in der möglichst homogenen Befeuchtung des Streustoffes, damit über die gesamte Streubreite und Streustrecke eine möglichst gleichbleibende Wirkung des ausgebrachten Streustoffes erzielt wird. Vor diesem Hintergrund wurden Streugeräte der gattungsgemäßen Art entwickelt, bei denen eine Befeuchtung des Streustoffes nicht (erst) auf dem Streuteller erfolgt (vgl. z.B. DE 9010069 Ul) , sondern vielmehr der Streustoff in einem dem Streuteller vorgeschalteten Aggregat befeuchtet wird, nämlich in einer gesonderten Zuführeinrichtung, welche von der Streustoff-Fördereinrichtung mit trockenem Streustoff und von der Flüssigkeits-Fördereinrichtung mit Flüssigkeit gespeist wird und den Streuteller bzw. die sonstige Ausbringeinrichtung mit befeuchtetem Streustoff beschickt. Dergleichen ist beispielsweise bekannt aus der US 3420451, der FR 2661201 Al, der EP 1491686 A2 und der EP 0675132 Bl.One of the problems encountered in practice in this respect is the most homogeneous moistening possible of the scattering substance, so that over the entire scattering range and scattering distance a constant effect of the applied scattering substance is achieved. Against this background, spreaders of the generic type were developed in which a moistening of the scattering substance not (first) takes place on the spreading plate (cf., for example, DE 9010069 U1), but rather the spreading material is moistened in an aggregate arranged upstream of the spreading plate, namely in a separate feeding device, which is guided by the spreading material conveying device with dry spreading material and by the liquid Conveyor is fed with liquid and the spreading plate or the other dispensing device charged with moistened scattering material. The same is known for example from US 3420451, FR 2661201 Al, EP 1491686 A2 and EP 0675132 Bl.
Ausgehend von diesem Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Streugerät der eingangs angegebenen Art zu schaffen, bei dessen Einsatz sich ein besonders gleichmäßiges Streubild unter Einhaltung der vorgegebenen Streuparameter (Streubreite, Streudichte, Flüssigkeitsanteil) erreichen läßt.Based on this prior art, the present invention seeks to provide a spreader of the type described, in its use, a particularly uniform scattering pattern can be achieved while maintaining the predetermined scattering parameters (scatter, spreading density, liquid content).
Gelöst wird diese Aufgabenstellung, indem bei einem Streugerät der gattungsgemäßen Art die Zuführeinrichtung eine Luftzuströmöffnung aufweist und innerhalb der Zuführeinrichtung ein Gebläse angeordnet ist, welches ein motorisch angetriebenes Flügelrad umfaßt und eine zu der Durchströmung der Zuführeinrichtung mit Streustoff gleichgerichtete Luftströmung erzeugt. Nach der vorliegenden Erfindung ist es somit ein zentrales Merkmal, daß in der Zuführeinrichtung aktiv, nämlich unter Einsatz eines hierzu bestimmten Gebläses, eine Luftströmung erzeugt wird, wobei die durch das Gebläse induzierte Luftströmung die Zuführeinrichtung in jener Richtung durchsetzt, in der auch der Streustoff (ohne die durch das Gebläse erzeugte Luftströmung) die Zu- führeinrichtung durchströmt. Zur Ausbildung eines entsprechenden Luftstromes weist die Zuführeinrichtung eine Luftzuströmöffnung auf, durch welche hindurch die von dem Gebläse angesaugte Luft in die Zuführeinrichtung eintritt. In jenen Luftström werden der trockene Streustoff sowie die zu dessen Befeuchtung dienende Flüssigkeit eingebracht. Durch eine Austrittsöffnung hindurch tritt der Luftstrom mitsamt dem befeuchteten Streustoff aus der Zuführeinrichtung aus, um auf die Ausbringeinrichtung (Streuteller oder dergl . ) aufgebracht zu werden. Anders, als dies beispielsweise für den Stand der Technik nach der EP 1491686 A2 , der US 3420451 und der FR 2661201 Al gilt, wird nach der vorliegenden Erfindung die Flüssigkeit nicht in eine durch Schwerkraft nachrutschende (FR 2661201 Al) oder durch eine Förderschnecke transportierte (EP 1491686 A2 und US 3420451) , bis auf ein Luftporenvolumen kompakte Streustoffmenge eingebracht, sondern vielmehr in einen Luftstrom, der den Streustoff mit sich trägt. Anders ausgedrückt bedeutet dies, daß die die Zuführeinrichtung durchströmende Luft typischerweise selbst bei dem größtmöglichen Streustoffdurchsatz noch immer deutlich mehr als 50% des Volumens der Zuführeinrichtung einnimmt. So könnte beispielsweise bei maximalem Streustoffdurchsatz durch die Zuführeinrichtung der Volumengehalt an Streustoff zwischen etwa 10% und 40%, bevorzugt zwischen etwa 20% und 30% betragen, wobei dieser Anteil bei einem gegenüber dem Maximalwert reduzierten Streustoffdurchsatz entsprechend abnimmt (z.B. bis deutlich unter 1%) . Bei dem erfindungsgemäßen Streugerät werden demnach mehr oder weniger vereinzelte Streustoffkörner durch den mittels des Gebläses erzeugten Luftström durch die Zuführeinrichtung hindurch transportiert. Die sich hierdurch ergebenden entscheidenden Vorteile liegen einerseits in der Möglichkeit der optimalen Befeuchtung der Streustoffkörner an ihrer gesamten Oberfläche und andererseits in der Möglichkeit, die Auftreffgeschwindigkeit des befeuchteten Streustoffes auf der Ausbringeinrichtung durch eine entsprechende Steuerung der Geschwindigkeit der Luftströmung aktiv gezielt zu beeinflussen, insbesondere indem eine Auf- treffgeschwindigkeit eingestellt wird, die signifikant über derjenigen liegt, die sich allein durch ein schwerkraftbedingtes Fallen bzw. Rutschen des befeuchteten Streustoffes auf den Streuteller ergäbe. Jene Möglichkeit, die Auftreffgeschwindigkeit des befeuchteten Streustoffes auf den Streuteller innerhalb vergleichsweise enger Grenzen gezielt einzustellen, gestattet eine spürbare Vergleichmäßigung des Streuergebnisses verglichen mit solchen Streugeräten, bei denen befeuchteter Streustoff in einem Fallrohr auf den Streuteller fällt bzw. in einer Schütte zum Streuteller rutscht; denn in diesem Falle ist durch unterschiedliche Partikelgrößen (Klumpenbildung) und unterschiedliche Befeuchtung der Streustoffpartikel an ihrer Oberfläche das Fall- bzw. Rutschverhalten der Streustoffpartikel erheblichen Schwankungen unterworfen, was zu vergleichsweise großen Unterschieden führt, was die Auftreffgeschwindigkeit des befeuchteten Streustoffes auf dem Streuteller betrifft, was sich wiederum in einem entsprechend ungleichmäßigen Streubild auswirkt.This problem is solved by the supply device has a Luftzuströmöffnung in a spreader of the generic type and within the feeder, a fan is arranged, which comprises a motor-driven impeller and generates a rectified to the flow of the feeder with scattering air flow. According to the present invention, it is thus a central feature that an air flow is actively generated in the feeder, namely using a blower intended for this purpose, wherein the air flow induced by the blower passes through the feeder in the direction in which the scattering substance (FIG. without the air flow generated by the blower) the supply of flows through guiding device. To form a corresponding air flow, the feed device has an air inflow opening, through which the air drawn in by the blower enters the feed device. Into those airstreams the dry spreading material and the liquid serving for its moistening are introduced. Through an outlet opening, the air flow, together with the moistened scattering material, leaves the feeding device in order to be applied to the dispensing device (spreading plate or the like). In contrast to the state of the art according to EP 1491686 A2, US Pat. No. 3,420,451 and FR 2661201 A1, according to the present invention, the liquid is not transferred into a gravity-slipping (FR 2661201 A1) or through a screw conveyor (FIG. EP 1491686 A2 and US Pat. No. 3,420,451), except for an air pore volume, a compact amount of litter is introduced, but rather into an air stream which carries the litter with it. In other words, this means that the air flowing through the feeder typically still occupies significantly more than 50% of the volume of the feeder, even at the highest possible throughput of material throughput. Thus, for example, with maximum spreading material throughput by the feeder, the volume content of the scattering substance could be between about 10% and 40%, preferably between about 20% and 30%, whereby this proportion decreases correspondingly at a scattering substance throughput reduced compared to the maximum value (eg, well below 1%). ). Accordingly, in the spreader device according to the invention, more or less scattered scattered grains are transported through the feed device by the air flow generated by means of the fan. The resulting decisive Advantages lie on the one hand in the possibility of optimum moistening of the scattering grains on their entire surface and on the other hand in the possibility of actively influencing the impact velocity of the moistened scattering material on the dispensing device by appropriate control of the speed of the air flow, in particular by setting an impact velocity , which is significantly above that which would result solely by a gravity-induced falling or slipping of the moistened scattering substance on the spreading plate. The possibility of selectively setting the impact velocity of the moistened scattering substance on the spreading plate within comparatively narrow limits allows a noticeable homogenization of the scattering result compared with those spreading devices in which moistened scattering material falls on the spreading plate in a downpipe or slides in a chute to the spreading plate; because in this case is by different particle sizes (lumping) and different humidification of the scattering particles on their surface the falling or sliding behavior of the scattering particles subject to considerable fluctuations, which leads to comparatively large differences in terms of the impact velocity of the moistened scattering material on the scattering plate, which in turn, results in a correspondingly uneven spread pattern.
Eine erste bevorzugte Weiterbildung der Erfindung zeichnet sich dadurch aus, daß das Flügelrad des Gebläses stromaufwärts der Flüssigkeitseinspeisung in die Zuführeinrichtung angeordnet ist. Unter der Voraussetzung, daß der Streustoff dem durch das Gebläse erzeugten Luftstrom stromaufwärts des Gebläses zugegeben wird, besteht einer der Vorteile dieser Ausführungsform darin, daß das Flügelrad des Gebläses eine Verwirbelung der mit dem Luftstrom transportierten Streustoffpartikel bewirkt, die sich günstig auf die nachfolgende gleichmäßige Befeuchtung des Streustoffes auswirkt . Ferner wird, verglichen mit einem Einspeisen der Flüssigkeit stromaufwärts des Gebläses, die Gefahr, daß feuchter Streustoff an dem Flügelrad des Gebläses anbackt, reduziert.A first preferred embodiment of the invention is characterized in that the impeller of the fan upstream of the liquid feed is arranged in the feeder. Provided that the spreading material is added to the airflow generated by the blower upstream of the blower is one of the advantages of this embodiment is that the impeller of the fan causes a turbulence of transported with the airflow scattering particles, which has a favorable effect on the subsequent uniform moistening of the scattering substance. Further, as compared with feeding the liquid upstream of the blower, the risk of wet spreading on the impeller of the blower is reduced.
Gemäß einer anderen bevorzugten Weiterbildung der Erfindung ist vorgesehen, daß innerhalb der Zuführeinrichtung stromabwärts vom Flügelrad ein rotierendes Zerkleinerungswerkzeug angeordnet ist . Insbesondere kann dabei das Zerkleinerungswerkzeug gemeinsam mit dem Flügelrad rotierend angetriebene Schlagelemente aufweisen, die beispielsweise als flache Schlagplatten ausgeführt sein können. In dem Zerkleinerungswerkzeug erfolgt insbesondere durch die Zerschlagung größerer Streustoffkonglomerate eine Vergleichmäßigung der Korngröße der Streustoffpartikel, was zu einer gesteigerten Homogenität des - nach seiner anschließenden Befeuchtung - auszubringenden Streustoffes beiträgt . Die Zerkleinerung kann im Einzelfall bis zu einer Pulverisierung des Streustoffes reichen, wobei der Grad der erzielbaren Zerkleinerung nicht zuletzt von dem Volumengehalt des Streustoffes in dem Luftstrom (s.o.) abhängt und in einem umgekehrten Verhältnis zu diesem steht . Auch auf die anschließende Befeuchtung der Streustoff - Partikel wirkt sich deren vorausgegangene Zerkleinerung vorteilhaft aus, indem es die gleichmäßige Benetzung der Streustoffpartikel an deren Oberfläche begünstigt. Die vorstehend dargelegten Vorteile sind dabei besonders ausgeprägt, wenn die Schlagelemente in Achsrich- tung auf mehrere Ebenen verteilt sind, d.h. das Zerkleinerungswerkzeug mehrstufig ausgeführt ist.According to another preferred development of the invention it is provided that a rotating comminuting tool is arranged downstream of the impeller within the feed device. In particular, the comminution tool may have, together with the impeller, rotationally driven striking elements which may be designed, for example, as flat impact plates. In the comminution tool, in particular by smashing larger scattering conglomerates, the grain size of the scattering material particles is evened out, which contributes to an increased homogeneity of the scattering substance to be applied after its subsequent moistening. The comminution can in individual cases to a pulverization of the scattering material rich, the degree of achievable crushing not least on the volume content of the scattering substance in the air flow (see above) and is in an inverse relationship to this. The subsequent moistening of the scattering substance particles also has an advantageous effect on the previous comminution, in that it promotes the uniform wetting of the scattering material particles on their surface. The advantages set out above are particularly pronounced when the impact elements in Achsrich- tion are distributed over several levels, ie the crushing tool is made multi-level.
Gemäß einer wiederum bevorzugten Weiterbildung ist das Zerkleinerungswerkzeug als kombiniertes Zerkleinerungsund Mischwerkzeug ausgeführt, indem die Flüssigkeits- einspeisung in die Zuführeinrichtung stromaufwärts oder im Bereich des Zerkleinerungswerkzeugs erfolgt. An den rotierenden Schlagelementen des kombinierten Zerkleine- rungs- und Mischwerkzeugs erfolgt ein inniger Kontakt zwischen den (zerkleinerten) Streustoffpartikeln und der Flüssigkeit, wobei ggf. auch Flüssigkeitstropfen durch die Schlagelemente noch zerkleinert bzw. vernebelt werden können, was seinerseits positive Auswirkungen auf die gleichmäßige Benetzung der Oberfläche der Streustoffpartikel zeigt . Sind die Schlagelemente des Zerkleinerungswerkzeugs in Achsrichtung auf mehrere Ebenen verteilt angeordnet, ist es besonders günstig, wenn die Flüssigkeitseinspeisung in die Zuführeinrichtung stromabwärts der in Durchströmungsrichtung ersten Schlagelemente erfolgt. In diesem Falle dienen die in Durchströmungsrichtung ersten Schlagelemente primär der Zerkleinerung der noch nicht befeuchteten Streustoffpartikel, während die stromabwärts der Flüssigkeitseinspeisung angeordneten Schlagelemente primär die innige Benetzung der zerkleinerten Streustoffpartikel bewirken.According to a further preferred development, the comminution tool is designed as a combined comminution and mixing tool in that the liquid is fed into the feed device upstream or in the area of the comminuting tool. An intimate contact between the (comminuted) scattering material particles and the liquid takes place on the rotating impact elements of the combined comminution and mixing tool, it also being possible for liquid droplets to be comminuted or atomized by the impact elements, which in turn has a positive effect on the uniform wetting the surface of the scattering particles shows. If the impact elements of the comminuting tool are distributed in the axial direction over several levels, it is particularly favorable if the liquid feed into the feed device takes place downstream of the first striking elements in the throughflow direction. In this case, the first striking elements in the direction of flow serve primarily for the comminution of the not yet moistened scattering material particles, while the impact elements arranged downstream of the liquid feeding effect primarily the intimate wetting of the comminuted scattering material particles.
Ebenfalls von Vorteil im Hinblick auf die Erzeugung eines möglichst homogenen Streustoff-Flüssigkeits-Gemisches ist, wenn innerhalb der Zuführeinrichtung, insbesondere stromabwärts des Flügelrades, in den Strömungs- weg ragende feststehende Prall- und/oder Leitelemente angeordnet sind. Derartige feststehende Prall- und/oder Leitelemente reduzieren die Ausbildung einer Drallströmung innerhalb der Zuführeinrichtung und wirken auf diese Weise einer fliehkraftbedingten Abscheidung der (befeuchteten) Streustoffpartikel aus dem Luftstrom entgegen. Besonders günstig ist es, wenn die feststehenden Prall- und/oder Leitelemente in Achsrichtung auf mehrere Ebenen verteilt sind. Sind, in dem weiter oben beschriebenen Sinne, in Axialrichtung auf mehrere Ebenen verteilt angeordnete rotierende Schlagelemente vorgesehen, so wechseln dabei besonders bevorzugt die Ebenen der rotierenden Schlagelemente und die Ebenen der feststehenden Prall- und/oder Leitelemente einander in Durchströmungsrichtung ab.It is also advantageous with regard to the generation of a homogenous scattering substance / liquid mixture if stationary impact and / or guide elements projecting into the flow path are arranged inside the feed device, in particular downstream of the impeller. Such fixed baffle and / or Guide elements reduce the formation of a swirl flow within the feeder and act in this way against centrifugal force deposition of the (moistened) scattering particles from the air stream. It is particularly favorable if the fixed baffle and / or guide elements are distributed in the axial direction over several levels. Are, in the sense described above, provided in the axial direction on several levels arranged rotating impact elements, so particularly preferably change the planes of the rotating impact elements and the planes of the fixed baffle and / or vanes in the flow direction.
Gemäß einer abermals anderen bevorzugten Weiterbildung der Erfindung ist stromabwärts des Zerkleinerungswerkzeugs bzw. des kombinierten Zerkleinerungs- und Mischwerkzeugs ein weiteres motorisch angetriebenes Flügelrad vorgesehen, welches die durch das Gebläse hervorgerufene Luftströmung unterstützt und verstärkt. Hierdurch läßt sich nach der Vermischung von Streustoff und Flüssigkeit zur Benetzung der Streustoffpartikel der Luftstrom mit dem in ihm transportierten befeuchteten zerkleinerten Streustoffpartikeln vergleichmäßigen, was positive Auswirkungen auf die Gleichförmigkeit des Streubildes hat .According to yet another preferred embodiment of the invention, a further motor-driven impeller is provided downstream of the crushing tool or the combined crushing and mixing tool, which supports and amplifies the air flow caused by the fan. As a result, after the mixture of scattering substance and liquid for wetting the scattering material particles, the air stream can be uniformed with the moistened comminuted scattering material particles transported in it, which has positive effects on the uniformity of the scattering pattern.
Bevorzugt umfaßt die Zuführeinrichtung des erfindungs- gemäßen Streugeräts ein Mischgehäuse, in dem das Flügelrad und ggf. das Zerkleinerungswerkzeug und das weitere Flügelrad untergebracht ist/sind, in das die Streustoffzufuhr und die Flüssigkeitszufuhr münden und an das ein Auslaufrohr oder ein Auslaufschlauch angeschlossen ist. Der durch das Gebläse erzeugte Luftstrom mitsamt dem darin transportierten befeuchteten und zerkleinerten Streustoff verläßt das Mischgehäuse durch das Auslaufröhr bzw. den Auslaufschlauch. Besonders günstig ist es dabei, wenn das Auslaufröhr bzw. der Auslaufschlauch verformbar und/oder lageveränderbar an dem Mischgehäuse angeschlossen ist, um - bei ortsfest montiertem Mischgehäuse - den Auftreffpunkt des den be- fe'uchteten Streustoff transportierenden Luftstromes auf der Ausbringeinrichtung verändern zu können. Insbesondere kann dabei das untere Ende des Auslaufrohres bzw. AuslaufSchlauches mittels eines Stellantriebes relativ zur Ausbringeinrichtung lageveränderbar sein. Ist in dem weiter oben beschriebenen Sinne ein weiteres Flügelrad vorgesehen, welches die durch das Gebläse hervorgerufene Luftströmung unterstützt und verstärkt, so ist dieses bevorzugt benachbart einem Boden des Mischgehäuses angeordnet .Preferably, the feeding device of the spreader according to the invention comprises a mixing housing in which the impeller and optionally the comminuting tool and the further impeller is / are accommodated, into which the scattering material supply and the liquid supply flow and to which an outlet pipe or an outlet hose is connected. The airflow generated by the blower together with the humidified and shredded spreading material transported in it, the mixing housing leaves through the outlet tube or the outlet hose. It is particularly advantageous if the outlet tube or the outlet tube is deformably and / or positionally connected to the mixing housing in order - to change the impingement point of the humidified spreading material transporting air flow on the dispensing device - with fixedly mounted mixing housing. In particular, the lower end of the outlet tube or outlet tube can be displaced relative to the dispensing device by means of an actuator. If a further impeller is provided in the sense described above, which supports and amplifies the air flow caused by the fan, then this is preferably arranged adjacent to a bottom of the mixing housing.
Schließlich ist noch zu betonen, daß die Flüssigkeitszufuhr zweckmäßigerweise in einem im wesentlichen vertikal abwärts durchströmten Abschnitt der Zuführeinrichtung erfolgt. Auf diese Weise werden schwerkraftbedingtes Asymmetrien in der Mischzone vermieden.Finally, it should be emphasized that the liquid supply is advantageously carried out in a substantially vertically downwardly flowed through section of the feeder. In this way gravitational asymmetries in the mixing zone are avoided.
Im folgenden wird die vorliegende Erfindung anhand eines in der Zeichnung veranschaulichen bevorzugten Ausführungsbeispiels näher erläutert. Dabei zeigt Fig. 1 in Seitenansicht den hinteren Bereich einesIn the following, the present invention will be explained in more detail with reference to a preferred embodiment illustrated in the drawing. 1 shows a side view of the rear area of a
Streugeräts nach der vorliegenden Erfindung und Fig. 2 in perspektivischer, teilweise aufgeschnittener Ansicht das bei dem Streugerät nach Fig. 1 vorgesehene Mischgehäuse mitsamt den Einbauten. Die Zeichnung beschränkt sich auf die Wiedergabe des hinteren, unteren Bereiches des Streugeräts, weil sich dort die Erfindung manifestiert und das Streugerät im übrigen gemäß dem hinlänglich bekannten Stand der Technik aufgebaut ist, so daß es insoweit weder einer zeichnerischen Darstellung, noch einer Erläuterung bedarf.Spreader according to the present invention and Fig. 2 is a perspective, partially cutaway view of the mixing device provided in the spreader apparatus of FIG. 1 together with the internals. The drawing is limited to the reproduction of the rear, lower portion of the spreader, because there manifests the invention and the spreader is otherwise constructed according to the well-known prior art, so that it requires neither a graphic representation, nor an explanation.
Das in der Zeichnung nur im Umfang des hier relevanten hinteren unteren Bereichs gezeigte, zum Aufbau auf ein Trägerfahrzeug bestimmte und hergerichtete Streugerät umfaßt einen der Bevorratung von trockenem Streustoff (z.B. Salz, Splitt, Salz-Splitt-Gemisch) dienenden siloartigen Streustoffvorratsbehälter 1 mit einer Streustoff-Fördereinrichtung 2, welche vorliegend als ein Bandförderer ausgeführt ist, dessen hinteres, aus dem Streustoffvorratsbehälter herausragendes Ende mit einem Gehäuse 3 verkleidet ist. Ferner umfaßt das Streugerät einen (nicht gezeigten) Flüssigkeitsbehälter, der Flüssigkeit (Sole) bevorratet und mit einer Flüssigkeits- Fördereinrichtung ausgestattet ist. Weiterhin weist das Streugerät eine Ausbringeinrichtung 4 für befeuchteten Streustoff auf, die vorliegend in der verbreitet eingesetzten Weise einen Streuteller 5 umfaßt, der von einem Hydromotor 6 um eine vertikale Achse rotierend angetrieben ist. Die Ausbringeinrichtung ist mittels des Trägers 7 an dem Rahmen 8 des Streugeräts aufgehängt.The shown in the drawing only in the scope of the relevant here lower rear portion, designed to be mounted on a carrier vehicle and prepared spreader comprises a storage of dry scattering material (eg salt, grit, salt-grit mixture) serving silo-like scattering material reservoir 1 with a scattering material -Fördereinrichtung 2, which is presently designed as a belt conveyor whose rear, protruding from the litter storage tank end is covered with a housing 3. Further, the spreader comprises a liquid container (not shown) which holds liquid (brine) and is provided with a liquid conveyor. Furthermore, the spreader has a dispenser 4 for moistened spreading material, which in the present case in the commonly used manner comprises a spreading plate 5, which is driven in rotation by a hydraulic motor 6 about a vertical axis. The dispensing device is suspended by means of the carrier 7 on the frame 8 of the spreader.
Weiterhin ist eine Zuführeinrichtung 9 vorgesehen, welche von der Streustoff-Fördereinrichtung 2 mit trockenem Streustoff und von der Flüssigkeits-Fördereinrichtung mit Flüssigkeit gespeist wird und die Ausbringeinrichtung mit befeuchtetem Streustoff beschickt . Die Zuführeinrichtung 9 umfaßt ein vertikal orientiertes zy- lindrisches Mischgehäuse 10, das über zwei Laschen 11 an dem Rahmen 8 des Streugeräts aufgehängt und, zur Aussteifung der Struktur, mit zwei Bügeln 12 mit dem Träger 7 für die Ausbringeinrichtung verbunden ist, wobei die beiden Bügel 12 auch die Handhabung beim Hochschwenken der gesamten Einheit aus Ausbringeinrichtung 4 und Zuführeinrichtung 9 in eine Transportstellung erleichtern sollen. Ferner umfaßt die Zuführeinrichtung ein oben an das Mischgehäuse angeschlossenes Übergangsstück 13, das einen Übergang von der breiteren, etwa rechteckigen Auslaßöffnung für den Streustoff in dem Gehäuse 3 des Bandförderers zu dem runden Querschnitt des Mischgehäuses 10 darstellt. Der dem Mischgehäuse 10 von dem Bandförderer zugeführte Streustoff durchströmt das Mischgehäuse in vertikaler Richtung (Pfeil A) von oben nach unten.Furthermore, a feed device 9 is provided, which is supplied with liquid by the spreading material conveying device 2 with dry scattering material and by the liquid conveying device and feeds the spreading device with moistened scattering substance. The feeder 9 comprises a vertically oriented cylindrical cylindrical mixing housing 10, which is suspended by two straps 11 on the frame 8 of the spreader and, for stiffening the structure, with two brackets 12 connected to the carrier 7 for the dispensing device, wherein the two brackets 12 and the handling when pivoting the entire unit from applicator 4 and feed 9 to facilitate a transport position. Further, the supply means comprises a top connected to the mixing housing transition piece 13, which represents a transition from the wider, approximately rectangular outlet opening for the scattering material in the housing 3 of the belt conveyor to the round cross-section of the mixing housing 10. The mixing material supplied to the mixing housing 10 from the belt conveyor flows through the mixing housing in the vertical direction (arrow A) from top to bottom.
In dem Mischgehäuse 10 ist eine zentrale Welle 14 angeordnet, welche in der an den Boden 15 des Mischgehäuses 10 angeschlossenen Lagerhülse 16 drehbar gelagert und durch einen an die Lagerhülse 16 angeschlossenen Motor 17 rotierend angetrieben ist (Pfeil B) . Im Bereich des oberen Endes ist in dem Mischgehäuse 10 ein Gebläse 18 vorgesehen, welches ein an der Welle 14 nahe von deren oberem Ende angebrachtes Flügelrad 19 umfaßt. Das gemeinsam mit der Welle 14 drehende Flügelrad 19 erzeugt in der Zuführeinrichtung 9 eine von oben nach unten gerichtete Luftströmung L. Hierzu stellt die obere Öffnung des Übergangsstücks 13 eine Luftzuströmöffnung dar, durch welche hindurch Luft in die Zuführeinrichtung eintreten kann, die, nachdem sie das Übergangsstück 13 und das Mischgehäuses 10 von oben nach unten durchströmt hat, das Mischgehäuse 10 durch den an dessen Boden 15 angeordneten Austrittsstutzen 20 wieder verläßt. Je nach dem Anschluß des Übergangsstücks 13 an das Gehäuse 3 des Bandförderers kann die durch die Luftzuströmöffnung in das Übergangsstück 13 eintretende Luft direkt aus der Umgebung angesaugt werden oder aber aus dem Gehäuse 3 des Bandförderers, welches in diesem Falle seinerseits Lufteintrittsöffnungen aufweist. Ergänzend oder alternativ könnten beispielsweise auch in der Wand des Übergangsstücks 13 und/oder im Bereich des Übergangs vom Übergangsstücks 13 zum Mischgehäuse 10 LuftZuströmöffnungen vorgesehen sein.In the mixing housing 10, a central shaft 14 is arranged, which is rotatably mounted in the bearing sleeve 16 connected to the bottom 15 of the mixing housing 10 and driven in rotation by a motor 17 connected to the bearing sleeve 16 (arrow B). In the region of the upper end, a blower 18 is provided in the mixing housing 10, which comprises a mounted on the shaft 14 near the upper end of the impeller 19. The impeller 19, which rotates together with the shaft 14, generates a top-down air flow L in the feeder 9. For this purpose, the top opening of the transition piece 13 constitutes an air inflow opening through which air can enter the feeder, which, after having moved it Transition piece 13 and the mixing housing 10 has flowed through from top to bottom, the mixing housing 10 through the disposed at the bottom 15 outlet nozzle 20 again leaves. Depending on the connection of the transition piece 13 to the housing 3 of the belt conveyor entering through the Luftzuströmöffnung in the transition piece 13 air can be sucked directly from the environment or from the housing 3 of the belt conveyor, which in turn has air inlet openings in this case. Additionally or alternatively, 10 air inlet openings could be provided for example in the wall of the transition piece 13 and / or in the region of the transition from the transition piece 13 to the mixing housing 10.
Dem Luftström wird der vom Bandförderer abgeworfene trockene Streustoff zugegeben.The air stream is added to the discarded by the belt conveyor dry scattering material.
An das Gebläse 18 schließt sich in Durchströmungsrichtung der Zuführeinrichtung ein rotierendes Zerkleinerungswerkzeug 21 an. Dieses umfaßt insgesamt acht fest mit der Welle 14 verbundene, mit dieser drehende Schlagelemente 22, die als flache, jeweils in einer Axialebene radial von der Welle 14 abstehende, auswechselbar an entsprechenden Haltern befestigte Schlagplatten 23 ausgeführt und in zwei in Achsrichtung zueinander versetzten Ebenen angeordnet sind. Weiterhin sind acht feststehende Prallelemente 24 vorgesehen, die von der Wand des Mischgehäuses 10 nach innen in den Strömungsweg der Luftströmung L hineinragen. Auch die acht Prallelemente 24 sind auch zwei verschiedene Axialebenen verteilt angeordnet, nämlich vier von ihnen als obere Prallelemente 24O zwischen dem Gebläse 18 und den in Durchströmungsrichtung ersten, d.h. den oberen Schlagplatten 23O und vier weitere, bezüglich der oberen Prallelemente in Umfangsrichtung versetzt, als untere Prallelemente 24U zwischen den oberen Schlagplatten 23O und den unteren Schlagplatten 23U. Im wesentlichen auf dem Niveau der unteren Schlagplatten 23U ist an das Mischgehäuse ein Eintrittstutzen 25 für die Zufuhr von Flüssigkeit in das Innere des Mischgehäuses 10 angeschlossen. An der Mündung des Eintrittsstutzens 25 ist eine Düse vorgesehen, welche für eine Zerstäubung der in das Mischgehäuse eingetragenen Flüssigkeit sorgt. Die (schnell) rotierenden unteren Schlagplatten 23U bewirken sowohl eine innige Vermischung von Streustoffpartikeln und Flüssigkeit als auch eine weitere Zerkleinerung der Flüssigkeitströpfchen und der in der ersten, oberen Stufe des Zerkleinerungswerkzeugs 21 vorzerkleinerten Streustoffpartikel. Indem im Bereich des Zerkleinerungswerkzeugs 21 auch bereits eine Vermischung von Streustoff und Flüssigkeit erfolgt, liegt bei der gezeigten Ausführungsform ein kombiniertes Zerkleinerungs- und Mischwerkzeug vor.The fan 18 is followed by a rotary comminuting tool 21 in the flow direction of the feed device. This comprises a total of eight fixedly connected to the shaft 14, with this rotating impact elements 22, which are designed as flat, each in an axial plane projecting radially from the shaft 14, interchangeable attached to corresponding holders impact plates 23 and arranged in two mutually offset in the axial direction planes , Furthermore, eight fixed baffle elements 24 are provided, which project from the wall of the mixing housing 10 inwardly into the flow path of the air flow L. Also, the eight baffles 24 are arranged distributed two different axial planes, namely four of them as upper baffles 24 O between the blower 18 and the first in the flow direction, ie the upper impact plates 23 O and four more, offset with respect to the upper baffle elements in the circumferential direction, as a lower baffle elements 24 U between the upper impact plates 23 O and the lower impact plates 23 U. Essentially at the level of the lower impact plates 23 U , an inlet connection 25 for the supply of liquid into the interior of the mixing housing 10 is connected to the mixing housing. At the mouth of the inlet nozzle 25, a nozzle is provided, which ensures atomization of the liquid introduced into the mixing housing. The (fast) rotating lower impact plates 23 U cause both an intimate mixing of scattering particles and liquid as well as a further comminution of the liquid droplets and the pre-shredded in the first, upper stage of the comminuting tool 21 scattering particles. By already mixing the scattering substance and the liquid in the area of the comminution tool 21, a combined comminution and mixing tool is provided in the embodiment shown.
Stromabwärts des Zerkleinerungswerkzeugs 21, und zwar dicht oberhalb des Bodens 15 des Mischgehäuses 10, ist ein weiteres motorisch angetriebenes Flügelrad 26 vorgesehen, das ebenfalls fest mit der Welle 14 verbunden ist und sich somit gemeinsam mit dieser dreht. Das Flügelrad ist so ausgeführt, daß es die durch das Gebläse 18 hervorgerufene Luftströmung L unterstützt und verstärkt .Downstream of the comminution tool 21, and precisely above the bottom 15 of the mixing housing 10, another motor-driven impeller 26 is provided, which is also fixedly connected to the shaft 14 and thus rotates together with this. The impeller is designed so that it supports and amplifies the air flow L caused by the fan 18.
Der Austrittsstutzen 20 geht in ein Auslaufröhr 27 ü- ber, das dicht oberhalb des Streutellers 5 mündet. Durch eine entsprechende Gestaltung des Austrittsstutzens 20 und des Übergangs zum Auslaufrohr 27 ist die relative Lage von dessen Mündung bezogen auf den Streuteller veränderbar, um die Streubildlage zu beeinflussen. Hierzu ist an der Abdeckung 28 der Ausbringein- richtung ein Stellantrieb 29 vorgesehen, der auf das untere Ende des Auslaufrohres wirkt . The outlet nozzle 20 is in an outlet pipe 27 Ü over, which opens just above the spreading plate 5. By a corresponding design of the outlet nozzle 20 and the transition to the outlet pipe 27, the relative position of its mouth relative to the spreading plate is variable to influence the spreading pattern. For this purpose, on the cover 28 of the dispensing unit direction provided an actuator 29 which acts on the lower end of the outlet pipe.

Claims

Ansprüche claims
1. Streugerät zum Aufbau auf ein Trägerfahrzeug, umfassend einen trockenen Streustoff bevorratenden Streustoffvorratsbehälter (1) mit einer Streustoff- Fördereinrichtung (2) , einen Flüssigkeit bevorratenden Flüssigkeitsbehälter mit einer Flüssigkeits-Fördereinrichtung, eineA spreader for mounting on a host vehicle, comprising a dry litter stocking litter stack (1) having a litter conveyor (2), a liquid stocking liquid container having a liquid conveyor, a
Ausbringeinrichtung (4) für befeuchteten Streustoff und eine Zuführeinrichtung (9) , welche von der Streustoff-Fördereinrichtung (2) mit trockenem Streustoff und von der Flüssigkeits- Fördereinrichtung mit Flüssigkeit gespeist wird und die Ausbringeinrichtung mit befeuchtetem Streustoff beschickt , dadurch gekennzeichnet, daß die Zuführeinrichtung (9) eineDispensing device (4) for moistened scattering material and a feed device (9), which is fed by the spreading material conveyor (2) with dry scattering material and from the liquid conveyor with liquid and the dispenser fed with moistened spreading material, characterized in that the feed device (9) one
Luftzuströmöffnung aufweist und daß innerhalb derHaving air inlet and that within the
Zuführeinrichtung (9) ein Gebläse (18) angeordnet ist, welches ein motorisch angetriebenes FlügelradFeeding device (9) a fan (18) is arranged, which is a motor-driven impeller
(19) umfaßt und eine zu der Durchströmung der(19) and one to the flow through the
Zuführeinrichtung (9) mit Streustoff gleichgerichtete Luftströmung (L) erzeugt.Feeding device (9) with scattering substance rectified air flow (L) generated.
2. Streugerät nach Anspruch 1, dadurch gekennzeichnet, daß das Flügelrad (19) des Gebläses (18) stromaufwärts der Flüssigkeitseinspeisung in die Zuführeinrichtung (9) angeordnet ist.2. spreader according to claim 1, characterized in that the impeller (19) of the blower (18) upstream of the liquid feed into the feeder (9) is arranged.
3. Streugerät nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß innerhalb der Zuführeinrichtung (9) stromabwärts vom Flügelrad (19) ein rotierendes Zerkleinerungswerkzeug (21) angeordnet ist.3. Spreader according to claim 1 or claim 2, characterized in that downstream of the feed device (9) from the impeller (19) a rotating crushing tool (21) is arranged.
4. Streugerät nach Anspruch 3 , dadurch gekennzeichnet, daß das Zerkleinerungswerkzeug (21) gemeinsam mit dem Flügelrad (19) rotierend angetriebene Schlagelemente (22) , insbesondere Schlagplatten (23) umfaßt .4. spreader according to claim 3, characterized in that the crushing tool (21) together with the impeller (19) rotatably driven impact elements (22), in particular impact plates (23).
5. Streugerät nach Anspruch 4, dadurch gekennzeichnet, daß die Schlagelemente (22) in Achsrichtung auf mehrere Ebenen verteilt sind.5. spreader according to claim 4, characterized in that the impact elements (22) are distributed in the axial direction on several levels.
6. Streugerät nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß das Zerkleinerungswerkzeug (21) als kombiniertes Zerkleinerungs- und Mischwerkzeug ausgeführt ist, indem die Flüssigkeitseinspeisung in die Zuführeinrichtung (9) stromaufwärts oder im Bereich des Zerkleinerungswerkzeugs (21) erfolgt.6. Spreader according to one of claims 3 to 5, characterized in that the crushing tool (21) is designed as a combined crushing and mixing tool by the liquid feed into the feed device (9) upstream or in the region of the crushing tool (21).
7. Streugerät nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, daß die Flüssigkeitseinspeisung in die Zuführeinrichtung (9) stromabwärts der in Durchströmungsrichtung ersten Schlagelemente (22) erfolgt .7. spreader according to claims 5 and 6, characterized in that the liquid feed into the feed device (9) downstream of the first impact elements in the direction of flow (22).
8. Streugerät nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß stromabwärts des Zerkleinerungswerkzeugs (21) ein weiteres motorisch angetriebenes Flügelrad (26) ausgeführt ist, welches die durch das Gebläse (18) hervorgerufene Luftströmung (L) unterstützt und verstärkt .8. Spreader according to one of claims 3 to 8, characterized in that downstream of the crushing tool (21), a further motor-driven impeller (26) is executed, which supports and amplifies the through the fan (18) caused air flow (L).
9. Streugerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, das die Zuführeinrichtung (9) ein Mischgehäuse (10) umfaßt, in dem das Flügelrad (19) und ggfs. das Zerkleinerungswerkzeug (21) und ggfs. das weitere Flügelrad (26) untergebracht ist/sind, in das die Streustoffzufuhr und die Flüssigkeitszufuhr münden und an das ein Auslaufrohr (27) oder ein Auslaufschlauch angeschlossen ist .9. spreader according to one of claims 1 to 8, characterized in that the feed device (9) comprises a mixing housing (10), in which the impeller (19) and, if necessary. The crushing tool (21) and optionally. The further impeller (26 ) is housed / are, in which open the stray material supply and the liquid supply and to which an outlet pipe (27) or an outlet hose is connected.
10. Streugerät nach Anspruch 9, dadurch gekennzeichnet, daß das untere Ende des Auslaufrohres (27) bzw. AuslaufSchlauches mittels eines Stellantriebes (29) relativ zur Ausbringeinrichtung (4) lageveränderbar ist.10. spreader according to claim 9, characterized in that the lower end of the outlet pipe (27) or outlet hose by means of an actuator (29) relative to the dispensing device (4) is variable in position.
11. Streugerät nach den Ansprüchen 8 und 9, dadurch gekennzeichnet, daß das weitere Flügelrad (26) benachbart einem Boden (15) des Mischgehäuses (10) angeordnet ist.11. spreader according to claims 8 and 9, characterized in that the further impeller (26) adjacent to a bottom (15) of the mixing housing (10) is arranged.
12. Streugerät nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß innerhalb der Zuführeinrichtung (9) in den Strömungsweg ragende feststehende Prall- und/oder Leitelemente (24) angeordnet sind. 12. Spreader according to one of claims 1 to 11, characterized in that within the feed device (9) projecting into the flow path fixed baffle and / or guide elements (24) are arranged.
13. Streugerät nach Anspruch 12, dadurch gekennzeichnet, daß die feststehenden Prall- und/oder Leitelemente (24) stromabwärts des Flügelrades (19) angeordnet sind.13. Spreader according to claim 12, characterized in that the fixed baffle and / or guide elements (24) are arranged downstream of the impeller (19).
14. Streugerät nach Anspruch 12 , dadurch gekennzeichnet, daß die feststehenden Prall- und/oder Leitelemente (24) in Achsrichtung auf mehrere Ebenen verteilt sind.14. Spreader according to claim 12, characterized in that the fixed baffle and / or guide elements (24) are distributed in the axial direction on several levels.
15. Streugerät nach den Ansprüchen 5 und 14, dadurch gekennzeichnet, daß die Ebenen der rotierenden Schlagelemente (22) und die Ebenen der feststehenden Prall- und/oder Leitelemente (24) einander in Durchströmungsrichtung abwechseln.15. Spreader according to claims 5 and 14, characterized in that the planes of the rotating impact elements (22) and the planes of the fixed baffle and / or guide elements (24) alternate in the flow direction.
16. Streugerät nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Flüssigkeitszufuhr in einem im wesentlichen vertikal abwärts durchströmten Abschnitt der Zuführeinrichtung (9) erfolgt. 16. Spreader according to one of claims 1 to 15, characterized in that the liquid supply takes place in a substantially vertically downwardly flowed through portion of the feed device (9).
EP07846698A 2006-11-23 2007-11-21 A gritting device for assembly on a carrier vehicle Not-in-force EP2092124B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055270A DE102006055270A1 (en) 2006-11-23 2006-11-23 Spreader for mounting on a carrier vehicle
PCT/EP2007/010057 WO2008061714A1 (en) 2006-11-23 2007-11-21 A gritting device for assembly on a carrier vehicle

Publications (2)

Publication Number Publication Date
EP2092124A1 true EP2092124A1 (en) 2009-08-26
EP2092124B1 EP2092124B1 (en) 2011-01-12

Family

ID=39079622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07846698A Not-in-force EP2092124B1 (en) 2006-11-23 2007-11-21 A gritting device for assembly on a carrier vehicle

Country Status (5)

Country Link
EP (1) EP2092124B1 (en)
AT (1) ATE495309T1 (en)
DE (2) DE102006055270A1 (en)
DK (1) DK2092124T3 (en)
WO (1) WO2008061714A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011106086A1 (en) * 2011-06-08 2012-12-13 Aebi Schmidt Nederland Bv spreader
CN111305140A (en) * 2020-03-25 2020-06-19 安徽安康塑业有限公司 Combined snow sweeping brush with front mounting

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243996A (en) * 1938-05-12 1941-06-03 Bernice G Baughman Broadcasting machine
DE3829716A1 (en) * 1988-09-01 1990-04-05 Schoerling Waggonbau Gritting vehicle with a scattering apparatus
US5052627A (en) * 1990-05-23 1991-10-01 Charles Balmer Spreading of particulate material
US5931393A (en) * 1992-04-10 1999-08-03 Iboco, Inc. Salt-sand spreader with liquid injector
DE10328913B3 (en) * 2003-06-26 2005-03-24 Schmidt Holding Gmbh spreader

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008061714A1 *

Also Published As

Publication number Publication date
DK2092124T3 (en) 2011-05-09
DE102006055270A1 (en) 2008-05-29
ATE495309T1 (en) 2011-01-15
EP2092124B1 (en) 2011-01-12
DE502007006269D1 (en) 2011-02-24
WO2008061714A1 (en) 2008-05-29

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