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EP0427995B1 - Streuvorrichtung zum Ausstreuen angefeuchteter Granulate - Google Patents

Streuvorrichtung zum Ausstreuen angefeuchteter Granulate Download PDF

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Publication number
EP0427995B1
EP0427995B1 EP90120663A EP90120663A EP0427995B1 EP 0427995 B1 EP0427995 B1 EP 0427995B1 EP 90120663 A EP90120663 A EP 90120663A EP 90120663 A EP90120663 A EP 90120663A EP 0427995 B1 EP0427995 B1 EP 0427995B1
Authority
EP
European Patent Office
Prior art keywords
gritting
impact surfaces
spreading
guide block
impact
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.)
Expired - Lifetime
Application number
EP90120663A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0427995A1 (de
Inventor
Richard Seidl
Dieter Vetter
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.)
Kuepper Weisser GmbH
Original Assignee
Kuepper Weisser 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 Kuepper Weisser GmbH filed Critical Kuepper Weisser GmbH
Publication of EP0427995A1 publication Critical patent/EP0427995A1/de
Application granted granted Critical
Publication of EP0427995B1 publication Critical patent/EP0427995B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a spreading device.
  • the outlet opening of the housing wall is at a small radial distance from a baffle that runs parallel to it and completely covers the outlet opening, which is arranged together with the baffle so that the center of its circumferential length is at the point where the grit is inclined to the axis of rotation of the Scatter plates and eccentrically arranged chute hits granular grit.
  • a toothed ring which is provided with sawtooth-like teeth on its periphery, is attached concentrically to its shaft, the tooth backs of which form throwing surfaces, which have the task of throwing liquid running radially inwards again outwards.
  • the diameter of the toothed ring is, however, considerably smaller than that of the lower edge of the frustoconical housing wall.
  • the axial height of the toothed ring is greater than the axial distance of approximately 3 cm between the lower edge of the frustoconical housing wall and the top of the spreading disc.
  • the dampening liquid runs out of the outlet opening over a more or less wide range, depending on the dosage, and thereby flows over the outer surface of the housing wall underneath, where the granulated scattering material bouncing off the baffle wall partially strikes.
  • the liquid comes with the granulated one Grit in contact. Due to the low tangential acceleration in the area of the point of impact and the small centrifugal forces in the inner area of the throwing blades, the throwing blades temporarily and in an uncontrolled manner accumulate and accumulate in the granules, which in large part experience vertical deflection and thus further mixing with liquid are withdrawn.
  • the mixing and moistening of the granulate is therefore inadequate, and there is an inconsistent spread pattern with different throwing distances and uneven distribution of the spreading material on the area to be treated.
  • supply channels are provided for the separate supply of the granulated, dry thawing material and a dampening liquid onto the surface of a spreading plate, which are formed by two downpipes of different widths arranged coaxially to the axis of rotation of the spreading plate.
  • the downspouts each end below the plane formed by the upper edges of the throwing blades.
  • the spreader plate has two radially offset groups of straight throwing blades, which are essentially in run radial direction and of which the one group between the two downpipes and the other group is arranged radially outside the outer downpipe. While the inner throwing blades run exactly radially, the separated outer throwing blades are arranged slightly obliquely.
  • the granules and the dampening liquid are not specifically supplied in a narrowly limited area of the spreading plate surface, which leads in particular to inadequate moistening of the granulated spreading material when small amounts of dampening liquid are to be supplied.
  • the arrangement of the throwing blades means that the danger is more uncontrolled Pellet accumulations are not removed and therefore a uniformly intensive mixing and a uniform spreading of the spreading material cannot be guaranteed.
  • the invention comes closest to the spreading device known from AT-B-369 076, in which a truncated cone-like cladding arranged concentrically with the spreading plate shaft is firmly connected as a guide body to the six straight, exactly radially extending throwing vanes, so that it also rotates of the spreading disc.
  • the dampening fluid flows from a plurality of feed bores, which are arranged stationary above the cladding near the axis, from above onto the lateral surface of this cladding, specifically in an angular range in which the granulate arriving through the granular slide hits the lower half of the lateral surface.
  • the liquid located on the upper half of the lateral surface of the guide body is continuously rotated by the rotation of the guide body from the point below which the dry granulate hits, so that only a small part of the dampening liquid comes into direct contact with the dry incoming granulate. Since the dampening liquid is more strongly on the outer surface of the The guiding body adheres as the heavier granulate and because the dampening liquid is distributed over the entire surface of the guiding body before it comes into contact with the granulated grit, mixing and moistening cannot be achieved with the desired intensity. In addition, there is the risk that the dry granulate, in particular salt, coming from the granule slide or the feed chute will adhere to the moist surface and build up to a growing crust. Furthermore, due to the radial arrangement of the throwing vanes, uncontrolled accumulations of granules form in the inner area, which cannot be moistened or mixed with liquid and lead to an uneven throwing distance and distribution of material.
  • the invention is therefore based on the object of providing a spreading device in which, on the one hand through the safe avoidance of uncontrolled accumulation of granules on the throwing vanes, better mixing of the two spreading media, i.e. to achieve a more even and intensive moistening of the granulated spreading material emerging from the spreading disc and, on the other hand, a more uniform spreading material distribution on the road, and thus to ensure more effective and economical use of spreading material.
  • the spreading plate is provided along the lateral surface of the frustoconical or cylindrical guide body with more than twelve baffles, the tooth flanks of the guide body or from the inner end portions of the same number existing throwing blades are formed and which form an angle of attack ⁇ of approximately 40 ° to 60 ° at the respective intersection with the apex line.
  • the angle of attack ⁇ which the throwing blades form with the radial, creates a force component acting radially on the spreading material, which the granulated spreading material and the supplied dampening fluid after bouncing off the impact surfaces and striking the surface of the spreading plate after reaching the inner root line of a throwing blade outside along the foot line accelerates.
  • These acceleration forces cause a uniform distribution of the spreading material along the throwing blades, so that the spreading material is guided to the spreading plate edge in a steady, steady flow.
  • This homogeneous, steady flow along the throwing blades results in better mixing and moistening of the granulated grit with the dampening liquid, and the mixture leaves the throwing blades in the form of a homogeneous, steady jet in an approximately horizontal direction. This effectively prevents temporarily uncontrolled accumulations and thus deflection of the granules upwards.
  • the larger number of throwing blades reduces the exposure of the individual throwing blades to the spreading material, so that the flow cross-section of the spreading material is reduced and thus a further improvement in the mixing and moisture penetration along the throwing blades from the detection point of the spreading material and liquid through the throwing blades inside the spreading plate to to the edge of the spreading plate. Further advantageous embodiments of the invention can be found in claims 2 to 11 inclusive.
  • the spreading device shown in the drawing has a spreading disc 1 which is fastened to a vertical shaft 3 by means of a cylindrical hub 2 (FIG. 2) and is rotatably driven by a controllable hydraulic motor 4 in the direction of arrow 5 (FIG. 2).
  • the spreading disc 1 has a flat inner section 6, which extends over approximately one third of the entire diameter, and an outer ring section 7, which rises outwards at a cone angle ( ⁇ 1) of approximately 10 °.
  • a frustoconical guide body 9 which rotates with the spreading plate 1, is fastened in the area of the inner section 6 concentrically to the axis of rotation 8.
  • the guide body 9 is provided on its periphery with fifteen baffles 10, which are formed by the tooth flanks sawtooth-like teeth 10 'which rotate in the direction of rotation and which taper in the radial direction from the inside outwards and in the axial direction from the bottom up.
  • the spreading plate 1 there is a granular slide 11 approximately U-shaped or V-shaped in cross section at a small axial distance, the apex line 12 along which the granulate is essentially guided onto the spreading plate , the outer surface of the guide body 9 intersects at an intersection or point of impact 13 and which has an angle of inclination of about 30 ° to the axis of rotation 8.
  • the arrangement of the granule slide 11 is the further made such that the apex line 12 runs exactly radially, ie that it intersects the axis of rotation 8.
  • the above-mentioned impact surfaces 10 of the guide body 9 are, as can best be seen from FIG. 3, essentially designed as flat surfaces and arranged in their radial course in such a way that they form an angle of attack ⁇ with a radial 14 extending through the point of impact 13, which can be between 40 ° and 60 °, preferably 45 °, and that their inner ends are each in the direction of rotation in front.
  • Each impact surface 10 is followed in the same direction by a throwing blade 15, which extends to the outer edge 16 of the spreading plate 1 and is seated without gaps on the top of the spreading plate.
  • these throwing blades run approximately up to half the radius of the spreading disc in exactly the same direction as the baffles 12, ie also at the angle of attack ⁇ .
  • the remaining part of the throwing blades 15, as can best be seen from FIG. 3, has a curved course, in such a way that the straight inner section 17 is followed by a curvature 18 which is directed backwards in the direction of rotation and which has a somewhat stronger shape, continues in the direction of rotation forward curvature 19 to the scatter plate edge 16.
  • the throwing blades 15 are each provided with a triangular cutout 20 in the area where the granules impact the impact surfaces 10 or where the granules come from the granule slide into the plane of their upper edges, which unimpeded impact of the granules in the lower third the baffles 10 favored.
  • the recesses 20 are so deep that their tips lie below the horizontal plane of the point of impact 13.
  • these recesses 20 of the throwing blades 15 are only so deep that in the lower quarter of the throwing blade height there is a gapless connection between the throwing blades 15 and the baffle surfaces 10 and thus a continuous guidance of the spreading material from the baffle surfaces 10 to the edge of the spreading plate 16.
  • the above-described curved shape of the individual throwing blades 15 results in an additional and increased radial acceleration of the spreading material along the front throwing blade surface to the outside in the region of the trailing curvature 18.
  • a certain delay in the flow of grit along the throwing vane surface is again effected, which enables a somewhat tighter bundling of the grit jet and thus a more targeted spreading.
  • This also results in a certain shift of the spreading fan in the direction of rotation of the spreading disc.
  • the two curvatures also result in an extension of the guide surface along the individual throwing blades 15 and thus also an extension of the mixing zone in which the liquid is forcibly kept in contact with the granules.
  • the dampening liquid is supplied from an intermediate container 21, which consists of a housing arranged above the guide body 9 with a frustoconical housing wall 22 and a housing base 23, both of which are tightly attached to a central fixed tube 24.
  • the moistening liquid is supplied through a hose connection piece 25, which is connected via a hose 26 to a storage container (not shown) or a metering pump is connected.
  • the housing wall 22 is provided with an essentially triangular outlet opening 27, which extends over a larger circumferential section and lies approximately halfway up the intermediate container 21.
  • the outlet opening 27 has the shape of an isosceles triangle standing on its tip, the equally long legs 27 'of which form an obtuse angle with one another and merge into one another in a curve.
  • Both the outlet opening 27 and the section of the housing wall 22 which extends over the width of this outlet opening and serves as a liquid guide surface 28 are covered by a cover plate 29 which runs partly at an angle and partly vertically, so that both are protected against the impact of granules.
  • the lower boundary edge 30 of the apron 28 has an oblique course in such a way that its front end in the direction of rotation extends further downward than the opposite end of this boundary edge 30.
  • the cover plate 29 is adapted to the curvature of the housing wall 22 and is provided on the side with bent connecting webs 31 and 32 which sit tightly on the housing wall 22 and thus laterally limit the liquid guide surface 28 'of the housing wall 22. This also ensures a targeted supply of liquid to the point at which the granulate impinges on the impact surfaces 10 or on the outer surface of the guide body 9.
  • the outlet opening 27 with the cover plate 29 covering it is arranged in such a way that its common plane of symmetry 33 has an offset of approximately 10 mm in the direction of rotation with respect to the point of impact 13, where the granulated grit coming from the granule chute 11 comes in in a targeted manner.
  • the width of the liquid guide surface 28, which is delimited by the lateral webs 31 and 32, extends over a circumferential length which corresponds to approximately 1.5 times the division of the baffle surfaces 10 .
  • the liquid arriving at this edge is preferably in the circumferential direction continued so that the majority of the dampening liquid strikes the impact surfaces 10 behind the point of impact 13 of the granules. It is also important that the liquid is guided as far down as possible on the liquid guide surface 28 formed by a section of the housing wall 22 and the apron 28 ', so that when the spreader plate 1 is rotating rapidly, it is passed through the baffles 10 and throwing blades 15 on its surface caused air vortex is not atomized.
  • this embodiment shows a top view of a spreading plate 1/1, the throwing blades 15/1 of which there are also fifteen-fold designs and have a continuous straight course from the inside to the outside.
  • this embodiment also shows that the granule slide 11 can also be arranged such that its apex line 12 does not run through the axis of rotation 8 of the spreading plate 1, but that it forms an angle ⁇ with a radial 14 passing through the point of impact 13.
  • this angle ⁇ should be chosen so large that the apex line 12 can form a baffle angle ⁇ of a maximum of 90 ° with a baffle 10 at the point of impact 13 of the guide body 9 .
  • the impact angle ⁇ is composed of the Angle ⁇ and the angle of attack ⁇ , which the baffles 10 form to a radial 14 leading through the point of impact 13.
  • FIGS. 4 and 5 show an exemplary embodiment in which a central cylindrical guide body 9/1 is provided, on the lateral surface 34, the inner end edges 35 of throwing blades 15/2 are fixed without a gap, such that the straight inner portions 17/1, which extend to about half the spreading disc radius R, extend at the same angle of attack ⁇ as that of the tooth flanks of the Teeth 10 ' 3 and 6.
  • the inner end sections 17/1 form the baffles, which in the embodiments of FIGS. 3 and 6 are formed by the leading tooth flanks 10 '.
  • the throwing blades 15/2 have the same course as the throwing blades 15 in the exemplary embodiment in FIG. 3. It is also possible to provide these throwing blades 15/2 with a straight course running from the inside to the outside, as is the case with the throwing blades 15/1 of FIG. 6. An inclined position of the granule chute 11, for example shown in FIG. 6, can also be provided in the embodiment of FIG. 5.
  • Fig. 10 a variant is shown, which shows that the throwing blades 15/2 and by the way also the throwing blades 15 and 15/1 or the baffles 10 with respect to the axis of rotation 8 or with respect to the perpendicular 36 to the spreading plate surface at an inclination angle ⁇ , which can be about 4 ° to 10 °, so inclined can be that their top edges each advance in the direction of rotation of the spreading plate 1.
  • ⁇ which can be about 4 ° to 10 °
  • the spreading material that rebounds from an impact surface 10 strikes the spreading plate surface over a smaller radius. The spreading material is thereby detected more quickly by the lower edge of the impact surface 10 or the throwing blade 15, 15/1 or 15/2 and is guided along the throwing blade 15, 15/1 over a longer distance.
  • a cylindrical guide body with teeth running straight through from top to bottom could also be provided, the leading edges of which in turn form the baffle surfaces 10.
  • saw tooth-like tooth profiles should be involved.
  • the cylindrical guide body 9/1 of the embodiment of FIG. 5 could also be provided with teeth on its circumferential surface, on which the throwing blades 15/2 end in an analogous manner.
  • the guide body or 9/1 expediently consist of an abrasion-resistant hard material, for example of metal or a suitable plastic. It can be designed both as a compact and as a hollow body. It goes without saying that the material from which the throwing blades, the spreading plate as a whole and also the baffle surfaces 10 are made should be corrosion-resistant.
  • the liquid supply in the form described occurs from an intermediate container, there is also the possibility that the liquid supply according to FIG. 11 by means of a flat nozzle 37 arranged on the underside of the granule slide 11 or by means of a flat nozzle 38 arranged vertically above the point of impact is fed. With such flat nozzles 37, 38 it is also possible to carry out the above-described manner of supplying liquid to the baffle surfaces 10.
  • FIG. 13 A further possibility of supplying liquid is shown in FIG. 13 in the form of a smaller intermediate container 39, which is arranged on the side of the tube 24 facing the granule slide 11 and conducts the dampening liquid onto the baffles 10 of the guide body 9 in the same way as that in FIG the 2 and 4 shown device.

Landscapes

  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Glanulating (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Soil Working Implements (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
EP90120663A 1989-11-13 1990-10-29 Streuvorrichtung zum Ausstreuen angefeuchteter Granulate Expired - Lifetime EP0427995B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3937675 1989-11-13
DE3937675A DE3937675A1 (de) 1989-11-13 1989-11-13 Streuvorrichtung zum ausstreuen angefeuchteter granulate

Publications (2)

Publication Number Publication Date
EP0427995A1 EP0427995A1 (de) 1991-05-22
EP0427995B1 true EP0427995B1 (de) 1994-06-01

Family

ID=6393403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120663A Expired - Lifetime EP0427995B1 (de) 1989-11-13 1990-10-29 Streuvorrichtung zum Ausstreuen angefeuchteter Granulate

Country Status (6)

Country Link
EP (1) EP0427995B1 (no)
AT (1) ATE106479T1 (no)
DE (1) DE3937675A1 (no)
DK (1) DK0427995T3 (no)
FI (1) FI90270C (no)
NO (1) NO176121C (no)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039795C1 (no) * 1990-12-13 1992-03-12 Kuepper-Weisser Gmbh, 7715 Braeunlingen, De
DE4235426C1 (de) * 1992-10-21 1994-02-10 Kuepper Weisser Gmbh Streuvorrichtung mit Flüssigkeitszufuhr für Winterstraßendienst
SE9401054L (sv) * 1994-03-28 1995-03-06 Friggeraokers Verkstaeder Ab Sätt och anordning vid spridning av saltuppslamning
DE20114202U1 (de) * 2001-08-30 2002-02-07 Lindner, Anton, 83131 Nußdorf Sprühkasten
DE10153982C1 (de) * 2001-11-06 2003-04-30 Otto Pfau Streuteller
DE10301285A1 (de) 2003-01-15 2004-07-29 Küpper-Weisser GmbH Verfahren zur Verteilung von mit Flüssigkeit vermengten Streustoff und Vorrichtung zur Durchführung des Verfahrens
DK176222B1 (da) * 2003-10-07 2007-03-05 Epoke As Spredearrangement til en vejmaskine til spredning af en blanding af granuleret materiale og en væske samt en vejmaskine omfattende et sådant spredeapparat
WO2005118960A1 (de) 2004-05-28 2005-12-15 Küpper-Weisser GmbH Streuvorrichtung und streustoffanfeuchtungsvorrichtung dafür
DK1775385T3 (en) 2005-10-13 2016-11-28 Küpper-Weisser GmbH Spreading device for winter service
EP1775387B1 (de) 2005-10-13 2016-12-07 Küpper-Weisser GmbH Winterdienststreuvorrichtung
US8574048B1 (en) * 2012-07-10 2013-11-05 Cnh America Llc Combine spreader arrangement having independently positionable spreader disks
DE102015119464A1 (de) * 2015-11-11 2017-05-11 Kugelmann Maschinenbau E.K. Ausbringvorrichtung für einen Flüssigstoff
DE102020116598A1 (de) * 2020-06-24 2021-12-30 Aebi Schmidt Nederland Bv Winterdienst-Streugerät
RU206789U1 (ru) * 2021-05-13 2021-09-28 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Машина для обработки поверхности полотна дороги

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1166476A (en) * 1915-03-16 1916-01-04 Washington B Parrish Hand fertilizer and seed broadcast distributer.
US3232626A (en) * 1963-12-20 1966-02-01 Deere & Co Material distributor
AT360070B (de) * 1975-12-15 1980-12-29 Kahlbacher Anton Vorrichtung zum bestreuen von verkehrsflaechen
DE2730256A1 (de) * 1977-07-05 1979-01-25 Franz Huebner Streumaschine zum austrag von streuguetern auf verkehrsflaechen
AT369076B (de) * 1978-04-24 1982-12-10 Kahlbacher Anton Vorrichtung zum bestreuen von verkehrsflaechen
DE3035360C2 (de) * 1980-09-19 1982-12-30 Willy 7715 Bräunlingen Küpper Streufahrzeug mit Streuvorrichtungen für granulierte und flüssige Taustoffe
DE3050355C2 (de) * 1980-09-19 1984-03-29 Willy 7715 Bräunlingen Küpper Streuvorrichtung für granulierte und flüssige Taustoffe
DE3544060A1 (de) * 1985-12-13 1987-06-19 Willy Kuepper Streuvorrichtung mit fluessigkeitszufuhr zum ausstreuen angefeuchteter granulate

Also Published As

Publication number Publication date
NO176121C (no) 1995-02-08
NO176121B (no) 1994-10-31
DE3937675A1 (de) 1991-05-23
FI90270B (fi) 1993-09-30
ATE106479T1 (de) 1994-06-15
FI905577A0 (fi) 1990-11-12
DE3937675C2 (no) 1992-03-05
NO904542D0 (no) 1990-10-22
NO904542L (no) 1991-05-14
FI90270C (fi) 1994-01-10
DK0427995T3 (da) 1994-10-31
EP0427995A1 (de) 1991-05-22

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