EP0971811B1 - Dispositif de dosage pour comprimes cryogenes - Google Patents
Dispositif de dosage pour comprimes cryogenes Download PDFInfo
- Publication number
- EP0971811B1 EP0971811B1 EP98953103A EP98953103A EP0971811B1 EP 0971811 B1 EP0971811 B1 EP 0971811B1 EP 98953103 A EP98953103 A EP 98953103A EP 98953103 A EP98953103 A EP 98953103A EP 0971811 B1 EP0971811 B1 EP 0971811B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering
- disk
- metering device
- metering disk
- openings
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0092—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed by mechanical means, e.g. by screw conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
Definitions
- the invention concerns a metering device for cryogenic pellets which are used in a blast cleaning apparatus for treatment of surfaces.
- the cryogenic pellets are by example bars of compressed dry ice (carbon dioxide).
- Metering devices are known from the publication NL-A-9301237. It is found that this device does not function well because the metering device constantly freezes because the metering disk is not sufficiently isolated from the outside air. It is found that the metering disk needs a special surface treatment as lubricating is practical impossible as the operating temperature is about minus 80 degrees Celsius.
- the invention will neutralise these disadvantages by providing the sliding surfaces with a layer of nickel containing very fine ceramic particles, like sapphire with a particle dimension of about 6 micron. Besides the metering disk is pressed between two plates which are elastic but gas-tight connected. The device is completely sealed except the intake and exhaust openings. Ventilation openings are entirely avoided.
- Fig. 1 shows a cross section over the metering device.
- Fig. 2 shows the schema of the blast cleaning installation.
- Fig. 1 is with (1) the metering device indicated. At (2) is the supply of pellets, at (3) the exhaust. With (4) is indicated the metering disk. Metering disk (4) is preferably provided with 8 round holes (5) and is driven by shaft (6). Metering disk (4) rotates between plates (7, 8) where plate (7) carries the supply of pellets (2) and the supply of transport gas (9). Plate (8) carries the bearing with bearing ring (10), synthetic ring (11), securing ring (12) and bearing surface (13). Seal (14) seals shaft against humidity.
- Synthetic ring (11) fastens bearing ring (10) in such a way that small oscillations of shaft (6) are absorbed, where at the same time the bearing construction is sealed against penetration of humidity.
- a metallic seal put together from ring (15) and ring (16) where between is mounted a thin metal bellows (17) and it is preferred that the connection is made by welding.
- metering disk (4) has only one shaft end (6).
- At (18) is one of more tightening bolts which press plates (7) and (8) against metering disk (4) with disk springs.
- the surface (19) of metering disk (4) and plates (7) and (8) is treated with a layer of nickel which is filled with powdered sapphire with a particle dimension of about 6 micron or any other feasible ceramic material. This layer has a low coefficient of friction and can be used as sliding surface without lubricating.
- the bearing surface (13) and the inside surface of bearing ring (10) are treated the same way. Plate (7) and (8) are reduced in thickness and at (20) is machined a recess to prevent irregular wear.
- Fig. 2 shows the design of an installation.
- (21) is the storage chamber
- at (23) are valves and at (24) a reducing valve for transportation gas.
- (25) is the mixing part and (26) the blasting nozzle.
- the blast cleaning installation works as follows: with shaft (6) metering disk (4) is rotated with a (not drawn) variable speed motor. From storage chamber (21) pellets fall via supply (2) in opening (5). When opening (5) arrives before exhaust (3) the pellets are blown by the transportation gas into exhaust (3). The pellets are then going via mixing part (25) with compressed gas to blow nozzle (26).
- metering disk (4) is shut off from the outside air.
- the space (27) between metering disk (4) and seal (15, 16 and 17) is not ventilated. Remaining gas, resting behind in opening (5) after the blowing off of the pellets is not expelled.
- sublimation of for example carbon dioxide in the metering device (1) causes high pressure plates (7) and (8) will part and the gas will be released via supply (2) or exhaust (3) and provoke no damage.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Accessories For Mixers (AREA)
- Carbon And Carbon Compounds (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Discharge Heating (AREA)
Claims (4)
- Dispositif de dosage pour particles cryogenique pour soigner des surfaces laquelle est prévu avec une disque de dosage (4) avec des ouvertures circulair (5) ou les particles cryogenique sont mis avec gaz comprimé vers un élement de mixage (25) caracterisé par que le disque de dosage (4) tourne entre deux tôles lisses (7, 8) lesquelles sont serré avec des ressorts, dans lequel tôle (7) est prévu avec la ouverture de approvisionnement (2) et la ouverture de gaz de transport (9) et dans tôle (8) le palier pour l'axe (10, 11, 12 et 13) et la ouverture de exhaustion (3), dans lequel tous les surfaces glissantes du disque de dosage (4), tôles (7, 8), surface du palier (13) et partie du palier (10) sont traité avec une couche de nickel contenant des particles fine de ceramique, comme sapphire avec une dimension de environs 6 microns pendant que les tôles (7, 8) sont mutuellement joinant par anneau d' etanchéité (15, 16) quelle est prévu avec une soufflet de métal élastique (17)
- Dispositif de dosage pour particles cryogenique par revendication 1 caracterisé par que le disque de dosage (4) contiens 8 ouvertures et seulement une essieux (6).
- Dispositif de dosage pour particles cryogenique par revendication 1 et 2 caracterisé par que l' anneau de palier (10) pour essieux (6) est fixer avec une anneau synthetique sous pression (11).
- Dispositif de dosage pour particles cryogenique par revendication 1, 2 et 3 caracterisé par que les ouvertures (5) dans le disque de dosage (4) et espace (27) autour disque de dosage (4) sont pas aérer.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1007421 | 1997-11-03 | ||
NL1007421A NL1007421C2 (nl) | 1997-11-03 | 1997-11-03 | Doseerinrichting voor cryogene deeltjes. |
PCT/NL1998/000613 WO1999022909A1 (fr) | 1997-11-03 | 1998-10-23 | Dispositif de dosage pour comprimes cryogenes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0971811A1 EP0971811A1 (fr) | 2000-01-19 |
EP0971811B1 true EP0971811B1 (fr) | 2002-09-11 |
Family
ID=19765936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98953103A Expired - Lifetime EP0971811B1 (fr) | 1997-11-03 | 1998-10-23 | Dispositif de dosage pour comprimes cryogenes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0971811B1 (fr) |
AT (1) | ATE223787T1 (fr) |
AU (1) | AU1056199A (fr) |
DE (1) | DE69807855D1 (fr) |
NL (1) | NL1007421C2 (fr) |
WO (1) | WO1999022909A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1015216C2 (nl) * | 2000-05-17 | 2001-11-20 | Hoek Loos Bv | Inrichting voor droogijsstralen. |
US6468360B1 (en) * | 2000-07-28 | 2002-10-22 | Benjamin Edward Andrews | Method for cleaning ductwork |
NL1017210C2 (nl) * | 2001-01-29 | 2002-07-30 | Huibert Konings | Doseerapparaat voor cryogene deeltjes. |
US20030064665A1 (en) * | 2001-09-28 | 2003-04-03 | Opel Alan E. | Apparatus to provide dry ice in different particle sizes to an airstream for cleaning of surfaces |
NL1020072C2 (nl) * | 2002-02-27 | 2003-08-29 | Hoek Loos Bv | Inrichting voor droogijsstralen. |
ITBO20100586A1 (it) * | 2010-09-30 | 2012-03-31 | Eugenio Curtarello | Metodo di pulizia della matrice serigrafica con criotecnologie |
LT2994269T (lt) * | 2013-05-06 | 2019-12-27 | Ics Ice Cleaning Systems S.R.O. | Įrenginys sauso ledo kietųjų dalelių ir dujinės terpės srauto maišymui |
WO2015109354A2 (fr) | 2014-01-27 | 2015-07-30 | Feiba Engineering & Plants Gmbh | Mécanisme de positionnement pour broyeurs à cylindres |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389820A (en) * | 1980-12-29 | 1983-06-28 | Lockheed Corporation | Blasting machine utilizing sublimable particles |
US4463736A (en) * | 1982-06-07 | 1984-08-07 | Hayward Jr Wallace | Chambered rotary metering device |
US4538068A (en) * | 1983-05-03 | 1985-08-27 | The United States Of America As Represented By The United States Department Of Energy | Manipulator having thermally conductive rotary joint for transferring heat from a test specimen |
US4617064A (en) * | 1984-07-31 | 1986-10-14 | Cryoblast, Inc. | Cleaning method and apparatus |
US4744181A (en) * | 1986-11-17 | 1988-05-17 | Moore David E | Particle-blast cleaning apparatus and method |
US5109636A (en) * | 1988-08-01 | 1992-05-05 | Cold Jet, Inc. | Particle blast cleaning apparatus and method |
NL9301237A (nl) * | 1993-07-14 | 1995-02-01 | Harko Bv | Werkwijze voor het bewerken van oppervlakken met cryogene deeltjes. |
US5415584A (en) * | 1993-09-21 | 1995-05-16 | Tomco2 Equipment Company | Particle blast cleaning apparatus |
-
1997
- 1997-11-03 NL NL1007421A patent/NL1007421C2/nl not_active IP Right Cessation
-
1998
- 1998-10-23 AT AT98953103T patent/ATE223787T1/de not_active IP Right Cessation
- 1998-10-23 WO PCT/NL1998/000613 patent/WO1999022909A1/fr active IP Right Grant
- 1998-10-23 EP EP98953103A patent/EP0971811B1/fr not_active Expired - Lifetime
- 1998-10-23 AU AU10561/99A patent/AU1056199A/en not_active Abandoned
- 1998-10-23 DE DE69807855T patent/DE69807855D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69807855D1 (de) | 2002-10-17 |
WO1999022909A1 (fr) | 1999-05-14 |
AU1056199A (en) | 1999-05-24 |
NL1007421C2 (nl) | 1999-05-04 |
EP0971811A1 (fr) | 2000-01-19 |
ATE223787T1 (de) | 2002-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0971811B1 (fr) | Dispositif de dosage pour comprimes cryogenes | |
US4617064A (en) | Cleaning method and apparatus | |
US4179043A (en) | Rotary valve apparatus | |
US5632150A (en) | Carbon dioxide pellet blast and carrier gas system | |
US4744181A (en) | Particle-blast cleaning apparatus and method | |
RU2267709C2 (ru) | Способ и система непрерывной подачи твердого материала в систему высокого давления и струйный питатель (варианты) | |
EP1494836B1 (fr) | Distributeur pour systeme de projection de particules | |
EA200700056A1 (ru) | Устройство и способ пневмотранспорта сыпучих материалов сплошным потоком | |
JP2007239933A (ja) | 粉体処理装置の軸封装置 | |
GB1535085A (en) | Seals for a gas service butterfly valve | |
KR930010375A (ko) | 산소 압축기 | |
JP6612513B2 (ja) | 灰搬送用スクリューコンベヤの軸封構造及びそのメンテナンス方法 | |
JP4658720B2 (ja) | 弁装置 | |
US10228077B2 (en) | Fluidizing butterfly valve, and system | |
HU9800580D0 (en) | Equipment for carrying dust-like or granular material | |
JP2001225955A (ja) | ロータリーバルブ | |
CN207634760U (zh) | 阀门及具有其的除灰系统 | |
CN215326970U (zh) | 一种防止漏粉的钛白粉生产设备 | |
CN215861737U (zh) | 新型风机轴孔密封结构 | |
JP2003185027A (ja) | 弁の軸封装置 | |
CN111306932A (zh) | 一种回转窑综合密封结构及密封方法 | |
JPH065389Y2 (ja) | コークス乾式消火設備の連続切出し装置 | |
SU1134503A2 (ru) | Шнековый питатель пневмотранспортной установки дл сыпучих материалов | |
JPH0249925U (fr) | ||
JPH0480123A (ja) | ロータリーフイーダ装置 |
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 |
|
17P | Request for examination filed |
Effective date: 19990724 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB LI NL SE |
|
17Q | First examination report despatched |
Effective date: 20010511 |
|
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 ES FR GB LI NL SE |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020911 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020911 Ref country code: CH Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020911 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020911 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020911 |
|
REF | Corresponds to: |
Ref document number: 223787 Country of ref document: AT Date of ref document: 20020915 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69807855 Country of ref document: DE Date of ref document: 20021017 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021211 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021211 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021212 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030328 |
|
EN | Fr: translation not filed | ||
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 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
26N | No opposition filed |
Effective date: 20030612 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20061215 Year of fee payment: 9 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20080501 |
|
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: 20080501 |