EP0149649B1 - Vorrichtung zum beschleunigen von strahlmittel - Google Patents

Vorrichtung zum beschleunigen von strahlmittel Download PDF

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Publication number
EP0149649B1
EP0149649B1 EP84902706A EP84902706A EP0149649B1 EP 0149649 B1 EP0149649 B1 EP 0149649B1 EP 84902706 A EP84902706 A EP 84902706A EP 84902706 A EP84902706 A EP 84902706A EP 0149649 B1 EP0149649 B1 EP 0149649B1
Authority
EP
European Patent Office
Prior art keywords
abrasive
magnetic
energized
acceleration
coils
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
Application number
EP84902706A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0149649A1 (de
Inventor
Jost Wadephul
Jürgen WESTPHALEN
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.)
WESTPHALEN JURGEN
Original Assignee
WESTPHALEN JURGEN
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 WESTPHALEN JURGEN filed Critical WESTPHALEN JURGEN
Priority to AT84902706T priority Critical patent/ATE30394T1/de
Publication of EP0149649A1 publication Critical patent/EP0149649A1/de
Application granted granted Critical
Publication of EP0149649B1 publication Critical patent/EP0149649B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/08—Devices for generating abrasive blasts non-mechanically, e.g. of metallic abrasives by means of a magnetic field or by detonating cords

Definitions

  • the invention relates to a device for accelerating a blasting medium consisting of magnetically influenceable, in particular iron particles, for treating surfaces with magnetic coils arranged along the path of the blasting medium, preferably on a tube as acceleration elements, which, depending on the passage of the blasting medium moving in the coil field, through the magnetic field maximum be excited or de-excited.
  • the blasting medium is fed to the acceleration path at an initial speed, and the following of the first two magnetic coils thereof, which are alternately excited and de-energized in synchronization with the further magnetic coils that accelerate the blasting medium Magnetic coils supplied in packets.
  • the disadvantage here is that the blasting agent must have an initial speed which must be controlled as a function of the size of the blasting agent packets fed into the acceleration path; because too high an initial speed leads to the acceleration section becoming blocked and thus to the failure of the device. On the other hand, if the initial speed is too low, the device works with low power since the optimum amount of abrasive is not accelerated.
  • the object of the invention is now to create a device for accelerating a blasting medium consisting of magnetically influenceable particles, which receives the blasting medium from a stationary supply.
  • this object is achieved on the basis of a device of the type described in the introduction in that the preferably coreless first and second magnetic coils, in the effective range of which a supply of the blasting medium to be accelerated is applied, are poled in opposite directions at the beginning of the acceleration section and are excited or de-energized synchronously .
  • the magnet coils which are polarized and operated in opposite directions according to the invention, a certain amount of abrasive is removed from the stationary abrasive supply and fed to the following magnet coils for acceleration. Since the amount of blasting agent fed into the acceleration device in this way is regulated exclusively by the first two solenoid coils, there is no need to fear that the blasting agent will be overdosed or overdosed into the acceleration section.
  • the blasting agent is supplied via an approximately horizontally extending feed pipe, which is provided with a blasting agent supply, e.g. B. communicates in a bunker via its outlet, fed into the device; because the abrasive that accumulates in the feed pipe in the form of a discharge or pouring cone automatically regulates the outflow from the bunker.
  • the first magnetic coil of the device according to the invention is expediently arranged to be displaceable in the region of the pouring cone on the metering tube.
  • the acceleration path 1 consists of a bendable tube, on the wall of which a plurality of preferably coreless magnetic coils N, N 1 , N 2 ... N x are arranged.
  • An essentially horizontally extending metering tube 2 opens into the acceleration path 1, the inlet end of which is connected to the outlet funnel 3 of a blasting agent bunker, not shown.
  • the blasting agent flowing out of the blasting agent bunker collects in the horizontal region of the feed pipe 2 in the form of a pouring or discharge cone 4, which forms an automatically opening closure of the blasting agent bunker.
  • Two magnetic coils Z, and Z 2 which can be coreless, are slidably mounted on the feed tube 2 in the region of the cone 4.
  • the second magnet coil Z 2 adjacent to the acceleration path 1 is attached in the region of the start of the cone or the lower edge of the cone 5, while the first magnet coil Z is arranged on the feed pipe 2 at a distance from the second magnet coil Z 2 in the direction of the blasting agent bunker.
  • the first and second magnetic coils Z and Z z are excited or de-excited synchronously and are poled in opposite directions, that is to say that e.g. B. their positive poles face each other, while the negative poles point to the acceleration path 1 or blasting agent bunker.
  • the outlet end of the acceleration section 1 is designed as a funnel 6, the wall of which carries a plurality of independently controllable deflecting magnets 7, which deflect the accelerated blasting medium emerging from the acceleration section 1 as pulsating steel in the trajectory in order to evenly apply blasting medium to the surfaces to be treated, without the direction of acceleration itself z. B. by bending the pipe forming the acceleration section 1 to change greatly.
  • an electrical conductor (not shown), preferably helical, incorporated, which serves as a control element for the abrasion generated by the blasting agent on the tube walls. A small current flows through this conductor, the flow of which is interrupted when the conductor is destroyed by the abrasive when the tube wall is removed.
  • the duration and the temporal sequence of the de-energization and excitation of the magnetic coils Z 1 Z 2 and N to N x takes place as a function of the blasting agent flow in the acceleration path 1 via an electrical control circuit 8, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Particle Accelerators (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
EP84902706A 1983-07-08 1984-07-05 Vorrichtung zum beschleunigen von strahlmittel Expired EP0149649B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84902706T ATE30394T1 (de) 1983-07-08 1984-07-05 Vorrichtung zum beschleunigen von strahlmittel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324710 1983-07-08
DE3324710A DE3324710C1 (de) 1983-07-08 1983-07-08 Vorrichtung zum Beschleunigen von Strahlmittel

Publications (2)

Publication Number Publication Date
EP0149649A1 EP0149649A1 (de) 1985-07-31
EP0149649B1 true EP0149649B1 (de) 1987-10-28

Family

ID=6203521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84902706A Expired EP0149649B1 (de) 1983-07-08 1984-07-05 Vorrichtung zum beschleunigen von strahlmittel

Country Status (6)

Country Link
US (1) US4680900A (it)
EP (1) EP0149649B1 (it)
JP (1) JPS60501800A (it)
DE (1) DE3324710C1 (it)
IT (1) IT1212103B (it)
WO (1) WO1985000312A1 (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3611845A1 (de) * 1986-04-09 1987-10-15 Jost Dipl Ing Wadephul Vorrichtung zum beschleunigen von strahlmittel
DE3629255C1 (de) * 1986-08-28 1987-04-02 Alfred Gutmann Ges Fuer Maschb Vorrichtung zum Beschleunigen von magnetisch beeinflussbarem Strahlmittel
JP2825301B2 (ja) * 1990-02-14 1998-11-18 三菱電機株式会社 微細凍結粒子による洗浄装置
SE468134B (sv) * 1990-12-07 1992-11-09 Flaekt Ab Rengoeringsanordning foer flaekthjul, innefattande aatminstone en tryckluftskanon foer att rikta skott i form av tryckluftspulser mot flaekthjulet
US5971835A (en) * 1998-03-25 1999-10-26 Qed Technologies, Inc. System for abrasive jet shaping and polishing of a surface using magnetorheological fluid
US7291058B2 (en) * 2003-04-10 2007-11-06 Electronics Inc. Method and apparatus for improving media flow
SG10201602833VA (en) * 2016-04-11 2017-11-29 Abrasive Eng Pte Ltd Magnetic Valve for Shot Peening
CN106312836A (zh) * 2016-11-11 2017-01-11 安徽理工大学 一种交流式磨料磁流体射流发生器
CN106826580B (zh) * 2017-04-05 2018-12-11 安徽理工大学 一种交流式电磁驱动磨料浆体射流增压装置
CN107553343A (zh) * 2017-09-18 2018-01-09 安徽理工大学 一种电磁磨料浆体抛光装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224505A (en) * 1938-06-06 1940-12-10 American Foundry Equip Co Electric abrasive projector
CH230119A (de) * 1943-02-24 1943-12-15 Fischer Ag Georg Stahlkies-Putzeinrichtung.
CH240503A (de) * 1944-04-25 1945-12-31 Bbc Brown Boveri & Cie Einrichtung zur Erzeugung eines Eisenschrot-Strahles hoher Geschwindigkeit.
US2425520A (en) * 1944-06-17 1947-08-12 Bbc Brown Boveri & Cie Electric abrasive projector
US2880337A (en) * 1958-01-02 1959-03-31 Thompson Ramo Wooldridge Inc Particle acceleration method and apparatus
GB1084496A (en) * 1965-06-15 1967-09-20 British Steel Castings Res Ass Improved method of and equipment for shot-blasting and the like
SU531720A1 (ru) * 1974-09-27 1976-10-15 Предприятие П/Я Г-4448 Дробеметный аппарат
SE449214B (sv) * 1981-02-12 1987-04-13 Gullfiber Ab For pneumatisk transport avsett ror

Also Published As

Publication number Publication date
IT8421810A0 (it) 1984-07-09
US4680900A (en) 1987-07-21
JPS60501800A (ja) 1985-10-24
IT1212103B (it) 1989-11-08
DE3324710C1 (de) 1984-05-30
WO1985000312A1 (en) 1985-01-31
EP0149649A1 (de) 1985-07-31

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