EP0675231B1 - Method and device for spreading of salt slurry - Google Patents

Method and device for spreading of salt slurry Download PDF

Info

Publication number
EP0675231B1
EP0675231B1 EP95850067A EP95850067A EP0675231B1 EP 0675231 B1 EP0675231 B1 EP 0675231B1 EP 95850067 A EP95850067 A EP 95850067A EP 95850067 A EP95850067 A EP 95850067A EP 0675231 B1 EP0675231 B1 EP 0675231B1
Authority
EP
European Patent Office
Prior art keywords
salt
rotors
tube
blades
water
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
EP95850067A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0675231A1 (en
Inventor
Christer Friggeraker
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.)
Friggerakers Verkstader AB
Original Assignee
Friggerakers Verkstader AB
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 Friggerakers Verkstader AB filed Critical Friggerakers Verkstader AB
Publication of EP0675231A1 publication Critical patent/EP0675231A1/en
Application granted granted Critical
Publication of EP0675231B1 publication Critical patent/EP0675231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 present invention relates to a method and device for spreading of salt slurry.
  • Salt in various conditions is spread on the road lanes in order to dissolve ice and prevent skidding.
  • the salt can be in the form of solid or a more or less coarse-grained powder or dissolved or slurried in water. Saturated solutions of salt are only used on special occasions and use of dry salt or salt in slurries is more common. Salt slurries are generally more efficient than dry salt as it penetrates the surface faster and not like dry salt i.e. may be blown away from the road.
  • Salt slurries primarily means salt substantially comprising sodium chloride and/or other substances which are included in the designation road salt and which are mixed with an amount of water which is less than what is required to make all of the salt become dissolved.
  • a device for spreading moist material is disclosed in US-A-3420451.
  • the device includes feeders to feed material into a vertical pipe through which it falls onto a rotor comprising radial throwing blades which seize and eject the spreading material.
  • An agitator may be provided on the rotating shaft of the throwing rotor, said agitator projecting into the supply pipe, its wings distributing the spreading material uniformly over the throwing rotor.
  • the present invention relates to a new method for spreading of salt slurry.
  • the invention also concerns a device for performing the method, whereby the salt slurry is produced in immediate connection with the spreading.
  • Figure 1 shows a complete equipment for producing and spreading of salt slurry using the method and device according to the invention.
  • Figure 2 shows part of the device of figure 1 more in detail.
  • Figures 3 and 4 show the device of the invention from the side and from above.
  • FIGS 5 and 6 show another embodiment of the invention from the side and from above.
  • the device shown in figure 1 comprises a container 12 for salt and a tank 13 for water or solution of salt.
  • Water and salt is delivered to a device enclosed in a tube 4, wherein the slurry is produced.
  • the tube 4 is essentially vertical which in practice means that it deviates not more than 25° from a vertical line as by greater deviations there are problems with the conveyance of material through the tube. Thereupon the slurry falls down onto a spreader disc 15 from which it is spread over the road.
  • the complete device when used is intended to be placed on a suitable transportation vehicle.
  • Salt and water are supplied to the tube 4 from the top by a feeding screw 11 for salt and a tube 9 for water having a spreader disc 10 at its end. Thereafter, salt and water fall down through the tube to a device comprising two rotors made as fans 1 and 2.
  • fans is a device which has several blades or wings 1 a-d, 2 a-d mounted to a shaft 3. The blades extend from the shaft all the way outwards close to the inside of the tube.
  • the denomination fan aims at the appearance of the device.
  • the rotating fan shall not cause a flow of air in the direction of the shaft 3.
  • the fans are driven by a motor 5, suitably a hydraulic motor, and are directed opposite each other, i.e. so arranged that the flow of air which results from the rotation is nil or very small.
  • the fans are mounted onto a common shaft 3.
  • the blades of the fans are immovably mounted to the shaft and thus always rotate at the same speed and at the same direction.
  • the blades of the fans comprise flat surfaces which are somewhat oblique relative to the shaft and arranged so that the upper fan 1 alone would cause a flow of air directed in opposite direction to the flow of air from the lower fan 2.
  • the fans rotate at high speed which means that the salt particles hit the blades of the fans and are broken thereby.
  • the speed of rotation is based upon a desire to obtain a specific maximum particle size. It has also been found that the water shall be supplied before the fans and pass through them together with the salt as problems will otherwise occur with particles of salt that adhere to and form lumps on the blades of the fans.
  • the so obtained slurry falls via a funnel or duct 6 onto a conventional spreader including a spreader disc 15 with several blades 7.
  • the spreader disc is mounted onto a shaft 8 which is driven by a motor that can be controlled to the desired rotational speed.
  • the fan device can be made in many different ways.
  • the device as shown in figures 3 and 4 has two sets of fan blades 1, 2 on a common shaft.
  • the blades of the fans may also be mounted onto two different concentric shafts which rotate in opposite directions where all of the blades are angled in the same direction.
  • the speed of the rotors varies depending upon the other design features. However, there is a certain lowest speed at the outer ends of the blades close to the tube walls which is required and at a tube diameter of 200 mm the speed of rotation shall be not less than 1500 rpm, preferably about 2000 rpm.
  • FIG. 5 Another embodiment of the invention is shown in figures 5 and 6, wherein the blades of the fans have been substituted for by chain links 15, 16, 17, 18. In many cases this design further reduces the formation of lumps and adhering layers on the rotors. Nor do the chain links cause a vertical flow of air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Seasonings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP95850067A 1994-03-28 1995-03-27 Method and device for spreading of salt slurry Expired - Lifetime EP0675231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9401054A SE501524C2 (sv) 1994-03-28 1994-03-28 Sätt och anordning vid spridning av saltuppslamning
SE9401054 1994-03-28

Publications (2)

Publication Number Publication Date
EP0675231A1 EP0675231A1 (en) 1995-10-04
EP0675231B1 true EP0675231B1 (en) 1999-03-03

Family

ID=20393463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95850067A Expired - Lifetime EP0675231B1 (en) 1994-03-28 1995-03-27 Method and device for spreading of salt slurry

Country Status (7)

Country Link
EP (1) EP0675231B1 (da)
AT (1) ATE177165T1 (da)
DE (1) DE69507973T2 (da)
DK (1) DK0675231T3 (da)
FI (1) FI109928B (da)
NO (1) NO304195B1 (da)
SE (1) SE501524C2 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042184A1 (de) 2000-11-23 2002-05-30 Schmidt Holding Gmbh Streugerät
DE10157160A1 (de) * 2001-08-30 2003-04-03 Anton Lindner Ortsgebundene oder streufahrzeugseitige Vorrichtung zur Befeuchtung von rieselfähigem Streugut
DE10328913B3 (de) * 2003-06-26 2005-03-24 Schmidt Holding Gmbh Streugerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1459727B1 (de) * 1964-08-25 1970-10-15 Anton Karlbacher Fahrbare Vorrichtung zum Streuen von Streugut auf Straßen od. dgl.
DE3035360C2 (de) * 1980-09-19 1982-12-30 Willy 7715 Bräunlingen Küpper Streufahrzeug mit Streuvorrichtungen für granulierte und flüssige Taustoffe
DE3420694A1 (de) * 1984-06-02 1985-12-05 Max Pietsch KG GmbH & Co, 3014 Laatzen Streufahrzeug fuer den winterdienst
DE3937675A1 (de) * 1989-11-13 1991-05-23 Kuepper Weisser Gmbh Streuvorrichtung zum ausstreuen angefeuchteter granulate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042184A1 (de) 2000-11-23 2002-05-30 Schmidt Holding Gmbh Streugerät
DE10058073A1 (de) * 2000-11-23 2002-06-06 Schmidt Holding Gmbh Streugerät
DE10058073C2 (de) * 2000-11-23 2002-11-07 Schmidt Holding Gmbh Streugerät
DE10157160A1 (de) * 2001-08-30 2003-04-03 Anton Lindner Ortsgebundene oder streufahrzeugseitige Vorrichtung zur Befeuchtung von rieselfähigem Streugut
DE10328913B3 (de) * 2003-06-26 2005-03-24 Schmidt Holding Gmbh Streugerät

Also Published As

Publication number Publication date
FI951437L (fi) 1995-09-29
EP0675231A1 (en) 1995-10-04
FI109928B (fi) 2002-10-31
DE69507973T2 (de) 1999-09-16
SE9401054L (sv) 1995-03-06
DK0675231T3 (da) 1999-10-04
SE9401054D0 (sv) 1994-03-28
NO304195B1 (no) 1998-11-09
ATE177165T1 (de) 1999-03-15
DE69507973D1 (de) 1999-04-08
NO951177L (no) 1995-09-29
SE501524C2 (sv) 1995-03-06
FI951437A0 (fi) 1995-03-27
NO951177D0 (no) 1995-03-27

Similar Documents

Publication Publication Date Title
AU2008230193B2 (en) Apparatus and method for spreading particulate material
US3861599A (en) Insulation spray apparatus
US4475819A (en) Pneumatic granular or seed applicator
US8342117B2 (en) Coating apparatus
CA2352008C (en) Machine for coloring landscaping material
JPS5951329B2 (ja) 微粒成分の混合方法と混合装置
CN114011537A (zh) 一种连续式捏合破碎装置
US2161553A (en) Means of conveying and mixing comminuted material
CA1315253C (en) Method and apparatus for pulverizing material
US11325080B2 (en) Mixer/vacuum coater
EP0675231A1 (en) Means and method for spreading of salt slurry
CN207252219U (zh) 一种用于自动灌溉施肥的一体化装置
CA1284635C (en) Arrangement in a mixing machine
CA2126406A1 (en) Method for feeding fish
CN216800070U (zh) 一种连续式捏合破碎装置
JPH09501642A (ja) 空気式コンベヤシステム
WO2020011967A1 (en) Apparatus and process for continuous adsorption
US3351287A (en) Slurry slinging apparatus for treating soil
EP0097011A2 (en) Fluid entrainment of fibrous material
RU2033714C1 (ru) Устройство для обслуживания рыбоводных прудов
US1105555A (en) Mixing-machine.
CN222751181U (zh) 一种养殖用饲料抛洒装置
US956122A (en) Drying-machine.
JP3069524U (ja) 凍結防止剤散布装置
JPS5838086B2 (ja) 合成樹脂粉粒体に添加剤を付着させる方法及びその装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19960326

17Q First examination report despatched

Effective date: 19971107

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 177165

Country of ref document: AT

Date of ref document: 19990315

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69507973

Country of ref document: DE

Date of ref document: 19990408

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20070314

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070319

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20070320

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070323

Year of fee payment: 13

Ref country code: BE

Payment date: 20070323

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20070326

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20070330

Year of fee payment: 13

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: FRIGGERAKERS VERKSTAEDER AB

Free format text: FRIGGERAKERS VERKSTAEDER AB#DANSKA VAEGEN 87#S-521 32 FALKOEPING (SE) -TRANSFER TO- FRIGGERAKERS VERKSTAEDER AB#DANSKA VAEGEN 87#S-521 32 FALKOEPING (SE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070629

Year of fee payment: 13

BERE Be: lapsed

Owner name: *FRIGGERAKERS VERKSTADER A.B.

Effective date: 20080331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081001

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080327

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20081001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080331

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081001

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080327

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20140320

Year of fee payment: 20

Ref country code: DK

Payment date: 20140321

Year of fee payment: 20

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Effective date: 20150327

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG