WO1990008083A1 - Ejecteur avec arrivee peripherique du gaz propulseur - Google Patents

Ejecteur avec arrivee peripherique du gaz propulseur Download PDF

Info

Publication number
WO1990008083A1
WO1990008083A1 PCT/SE1990/000015 SE9000015W WO9008083A1 WO 1990008083 A1 WO1990008083 A1 WO 1990008083A1 SE 9000015 W SE9000015 W SE 9000015W WO 9008083 A1 WO9008083 A1 WO 9008083A1
Authority
WO
WIPO (PCT)
Prior art keywords
ejector
insert
housing
propellent gas
nozzles
Prior art date
Application number
PCT/SE1990/000015
Other languages
English (en)
Inventor
Svante Stenfors
Original Assignee
Abb Stal 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 Abb Stal Ab filed Critical Abb Stal Ab
Publication of WO1990008083A1 publication Critical patent/WO1990008083A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/42—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators

Definitions

  • the invention relates to an ejector intended for a pneuma ⁇ tic transport device for particulate material, especially erosive material.
  • the diffusor is formed with nozzles 5 through which propellent gas is supplied peripherally in the flow channel of the ejector.
  • An ejector with peripheral supply of propellent gas in a pneumatic conveying pipe for particulate material is known TO from UK Patent Specification 2 002 312 A.
  • Ejectors with peripheral supply of propellent gas in nozzles for blasting and surface coating are known from European Patent Specifi ⁇ cation 0 189 709 and International Patent Application 0 86/02587, respectively.
  • One object of the invention is to provide an ejector with high power and low consumption of propellent gas. Another object is to give an ejector such a design that the erosion therein becomes insignificant.
  • the ejector is provided with a number of peripherally arranged nozzles around a central flow channel. These nozzles are formed from an ejector housing and and insert forming part of the flow channel in the ejector.
  • the ejector housing is formed with
  • a conical seat and the insert with an outer conical surface contiguous to the seat Suitably, recesses in the conical surface of the insert and the surrounding surface in the conical seat in the ejector housing form a nozzle channel.
  • the recess can be made in the seat of the ejector housing, which, however, is more complicated from the manufacturing point of view.
  • the nozzle channel From an inlet for propellent gas, the nozzle channel has a continuously increasing cross section and forms a diffusor where the propellent gas expands and attains a very high velocity which provides a great driving power.
  • Figure 1 shows a longitudinal section through an ejector
  • FIG. 2 a section according to A-A in Figure 1 ,
  • FIG. 3 shows a section at B-B in Figure 1
  • Figure 4 shows on an enlarged scale a portion of the sec ⁇ tion according to Figure 1 .
  • Figure 5 shows an extension of a conical insert, included in the ejector, with milled-out portions forming nozzles and diffusor channels.
  • 1 designates an ejector in a pneumatic transport device between an upstream suction pipe 2 and a downstream conveying pipe 3.
  • the ejector comprises an ejector housing 4 with a propellent gas inlet 5 and a sleeve-formed insert 6.
  • the housing 4 is formed with a conical seat 7 and the insert 6 with an external conical portion 6a adapted to the insert 6.
  • the sleeve or insert 6 is fixed with its flange 6b in the housing 4 by the suc- tion pipe 2.
  • the propellent gas channel 8 of the inlet 5 opens out into an- annular space 9 formed by an annular tur ⁇ ned cavity in the housing 4 and by the flange 6b of the sleeve/insert 6.
  • milled grooves are provided which together with the housing 4, which surrounds the sleeve 6, form flow channels 10.
  • the inlet 10a communicates with the annular space 9 and the outlet with the opening 11 in the housing 4.
  • These channels 10 have a cross section increasing from the inlet 10a towards the outlet 10b and form Laval nozzles where the gas, after the smallest cross section at the inlet, is accelerated by expansion to a very high velocity in the channel serving as a diffusor and provided downstream of the inlet.
  • This channel opens out at the periphery of the flow channel 11.
  • the high velocity of the propellent gas gives a very high driving power with a small quantity of gas.
  • the channels are suitably formed such that their centre line makes a certain angle of with a plane extending through the longitudinal axis of the ejector.

Abstract

L'éjecteur décrit, qui est destiné à un système transporteur pneumatique et qui est pourvu de buses pour le gaz propulseur qui débouchent à la périphérie de l'éjecteur, comprend un logement (4) contenant une pièce rapportée conique (6). Des évidements ménagés dans la pièce rapportée et dans la surface circonvoisine du logement de l'éjecteur forment un canal (10) ayant une section transversale (diffuseur) qui décroît progressivement à partir d'une entrée (10a) pour le gaz propulseur, où le gaz propulseur subit une expansion et atteint une vitesse élevée. Ces canaux (10) débouchent à la périphérie dans le canal d'écoulement de l'éjecteur et forment les buses de l'éjecteur.
PCT/SE1990/000015 1989-01-11 1990-01-10 Ejecteur avec arrivee peripherique du gaz propulseur WO1990008083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8900076A SE462796B (sv) 1989-01-11 1989-01-11 Ejektor med perifer tillfoersel av drivgas
SE8900076-4 1989-01-11

Publications (1)

Publication Number Publication Date
WO1990008083A1 true WO1990008083A1 (fr) 1990-07-26

Family

ID=20374716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000015 WO1990008083A1 (fr) 1989-01-11 1990-01-10 Ejecteur avec arrivee peripherique du gaz propulseur

Country Status (3)

Country Link
EP (1) EP0453478A1 (fr)
SE (1) SE462796B (fr)
WO (1) WO1990008083A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456931A1 (fr) * 1990-05-18 1991-11-21 Kiyoshi Horii Dispositif d'écoulement à spirale Coanda
US6036407A (en) * 1997-09-03 2000-03-14 Exxon Chemical Patents Inc. Solids conveying system for compacted, friable solids that can not be pushed or compressed
WO2000017079A1 (fr) * 1998-09-23 2000-03-30 Exxon Chemical Patents Inc. Systeme de transport pneumatique pour solides compactes et friables
US6368028B1 (en) 1997-09-03 2002-04-09 Exxonmobil Chemical Patents Inc. Conveying systems for compacted, friable solids
WO2004011185A1 (fr) * 2002-07-26 2004-02-05 Honeywell International Inc. Separateur d'alimentation en poudre destine a une tete de soudage de fusion de poudre par laser a main
EP2812625A4 (fr) * 2012-02-07 2016-01-13 Commw Scient Ind Res Org Réduction du frottement d'un écoulement de fluide visqueux dans un conduit
US20180257796A1 (en) * 2011-07-11 2018-09-13 Altria Client Services Llc Delivery apparatus
WO2019017580A1 (fr) * 2017-07-17 2019-01-24 장희수 Éjecteur à jet d'eau destiné au transfert d'objet
CN110562746A (zh) * 2019-09-30 2019-12-13 安徽百盛源包装材料有限公司 一种复膜机吸边丝气流调节装置
CN114086332A (zh) * 2020-08-24 2022-02-25 高林股份有限公司 缝纫机的残屑收集装置及其负压接头

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708207A (en) * 1971-04-16 1973-01-02 Dynamic Air High pressure booster valve
DE2516402A1 (de) * 1975-04-15 1976-10-28 Lutz Tilo Dipl Ing Kayser Vorrichtung zur kontinuierlichen druckfoerderung von feinstueckigem massengut
EP0063960A2 (fr) * 1981-04-28 1982-11-03 Joshua Bigwood & Son Limited Appareil pour le convoyage de matériau en particules
WO1986002587A1 (fr) * 1984-10-29 1986-05-09 Hardblast Australia Pty. Ltd. Buse de projection de sable
EP0189709A1 (fr) * 1985-01-04 1986-08-06 Saint Gobain Vitrage International Ejecteur pneumatique de poudre
WO1988004220A1 (fr) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Procede et appareil de sablage abrasif par voie humide

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708207A (en) * 1971-04-16 1973-01-02 Dynamic Air High pressure booster valve
DE2516402A1 (de) * 1975-04-15 1976-10-28 Lutz Tilo Dipl Ing Kayser Vorrichtung zur kontinuierlichen druckfoerderung von feinstueckigem massengut
EP0063960A2 (fr) * 1981-04-28 1982-11-03 Joshua Bigwood & Son Limited Appareil pour le convoyage de matériau en particules
WO1986002587A1 (fr) * 1984-10-29 1986-05-09 Hardblast Australia Pty. Ltd. Buse de projection de sable
EP0189709A1 (fr) * 1985-01-04 1986-08-06 Saint Gobain Vitrage International Ejecteur pneumatique de poudre
WO1988004220A1 (fr) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Procede et appareil de sablage abrasif par voie humide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 87-241 500/34, SU 128 3197 publ. week 8734. *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU640943B2 (en) * 1990-05-18 1993-09-09 Kiyoshi Horii Coanda spiral flow unit
EP0456931A1 (fr) * 1990-05-18 1991-11-21 Kiyoshi Horii Dispositif d'écoulement à spirale Coanda
US6036407A (en) * 1997-09-03 2000-03-14 Exxon Chemical Patents Inc. Solids conveying system for compacted, friable solids that can not be pushed or compressed
US6368028B1 (en) 1997-09-03 2002-04-09 Exxonmobil Chemical Patents Inc. Conveying systems for compacted, friable solids
WO2000017079A1 (fr) * 1998-09-23 2000-03-30 Exxon Chemical Patents Inc. Systeme de transport pneumatique pour solides compactes et friables
WO2004011185A1 (fr) * 2002-07-26 2004-02-05 Honeywell International Inc. Separateur d'alimentation en poudre destine a une tete de soudage de fusion de poudre par laser a main
US6894247B2 (en) 2002-07-26 2005-05-17 Honeywell International, Inc. Powder feed splitter for hand-held laser powder fusion welding torch
US20180257796A1 (en) * 2011-07-11 2018-09-13 Altria Client Services Llc Delivery apparatus
US11618596B2 (en) * 2011-07-11 2023-04-04 Altria Client Services Llc Method of making delivery apparatus
US11027860B2 (en) * 2011-07-11 2021-06-08 Altria Client Services Llc Delivery apparatus
AU2013218791B2 (en) * 2012-02-07 2017-07-06 Commonwealth Scientific And Industrial Research Organisation Reducing friction of a viscous fluid flow in a conduit
US9759386B2 (en) 2012-02-07 2017-09-12 Commonwealth Scientific And Industrial Research Organisation Reducing friction of a viscous fluid flow in a conduit
EP2812625A4 (fr) * 2012-02-07 2016-01-13 Commw Scient Ind Res Org Réduction du frottement d'un écoulement de fluide visqueux dans un conduit
WO2019017580A1 (fr) * 2017-07-17 2019-01-24 장희수 Éjecteur à jet d'eau destiné au transfert d'objet
KR20190008730A (ko) * 2017-07-17 2019-01-25 장희수 물체 이송용 워터젯 이젝터
KR101978982B1 (ko) * 2017-07-17 2019-05-15 장희수 물체 이송용 워터젯 이젝터
CN110562746A (zh) * 2019-09-30 2019-12-13 安徽百盛源包装材料有限公司 一种复膜机吸边丝气流调节装置
CN110562746B (zh) * 2019-09-30 2021-06-18 安徽百盛源包装材料有限公司 一种复膜机吸边丝气流调节装置
CN114086332A (zh) * 2020-08-24 2022-02-25 高林股份有限公司 缝纫机的残屑收集装置及其负压接头

Also Published As

Publication number Publication date
EP0453478A1 (fr) 1991-10-30
SE462796B (sv) 1990-09-03
SE8900076A (fr) 1989-01-11
SE8900076D0 (sv) 1989-01-11

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