EP3568261A1 - Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité - Google Patents

Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité

Info

Publication number
EP3568261A1
EP3568261A1 EP18700211.8A EP18700211A EP3568261A1 EP 3568261 A1 EP3568261 A1 EP 3568261A1 EP 18700211 A EP18700211 A EP 18700211A EP 3568261 A1 EP3568261 A1 EP 3568261A1
Authority
EP
European Patent Office
Prior art keywords
jet
jet pipe
probe
blasting
beam probe
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.)
Granted
Application number
EP18700211.8A
Other languages
German (de)
English (en)
Other versions
EP3568261B1 (fr
Inventor
Alfons Urban
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.)
Tunap GmbH and Co KG
Original Assignee
Tunap GmbH and Co KG
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 Tunap GmbH and Co KG filed Critical Tunap GmbH and Co KG
Publication of EP3568261A1 publication Critical patent/EP3568261A1/fr
Application granted granted Critical
Publication of EP3568261B1 publication Critical patent/EP3568261B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/17—Maintenance; Servicing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/007—Cleaning

Definitions

  • Beam probe for introducing a granular blasting material into a cavity
  • the present invention relates to a jet probe for introducing a granular blasting material into a cavity, in particular for its cleaning, and to an apparatus for cleaning cavities provided with a blasting probe according to the invention.
  • a device for cleaning coked cavities, in particular of intake ports and valves of an internal combustion engine which has a first probe, which at its front end with one or more nozzles for injecting an alkaline liquid into one is provided to clean cavity and which is connected at its other end to the pressure side of a pump, the suction side of an alkaline liquid can be supplied.
  • the alkaline liquid to be introduced into the cavity to be cleaned for example into an inlet channel of a valve of an internal combustion engine, may be formed by a mixture consisting of a solvent and a lye in solid form. When using such an alkaline liquid, it is possible to inject them by radially arranged on the probe nozzles in the cavity to be cleaned.
  • the cleaning of the cavity is to be carried out in a two-step process, which results in the cleaning of inlet channels and valves of an internal combustion engine.
  • tors in a workshop with a built-in motor allows easier handling, it is difficult, however, to direct the cleaning powder jet emerging from the outlet opening of the powder jet tube in the axial direction to all areas of the walls of the cavity to be cleaned.
  • One way to control the direction of the cleaning powder jet is to turn off / bend the exit region of the powder jet tube, so that the powder jet also has a radial component in addition to an axial component.
  • the present invention seeks to provide a beam probe for introducing a granular blasting material into a cavity, with which it is possible to ensure even in tight cavities that all the walls of the cavity with the granular blasting material used to clean it can be applied so as to completely remove the pollution.
  • a jet probe for introducing a granular abrasive into a cavity for cleaning thereof has a jet tube whose outlet end is assigned a jet nozzle which has a radial outlet opening which is assigned an impact surface arranged obliquely to its opening surface and obliquely to the longitudinal axis of the jet pipe ,
  • jet nozzle according to the invention at the outlet end of the jet probe thus provides an angled Strahlgutstrahl, by simple Rotation of the jet pipe can be guided around its longitudinal axis over the entire peripheral region. Since the jet pipe of the jet probe has no bends, it can be completely 360 ° rotate even in the narrowest cavities, in which it can just be inserted, so that the walls of tightest cavities, in particular intake ports of intake valves of internal combustion engines reliable blasting be charged and thus cleaned properly.
  • an angle between the baffle surface and the longitudinal axis of the jet tube between 50 ° and 20 °, preferably between 40 ° and 30 °, in particular about 35 °.
  • the jet stream Due to the special angle adjustment of the baffle surface relative to the longitudinal axis of the jet pipe, ie to the transport direction of the jet through the jet pipe, it is achieved that the jet stream has both a radial component and an axial component, so that both adjacent and in front of the tip of the jet probe lying surfaces can be acted upon with granular blasting material.
  • the baffle surface is concavely curved.
  • the outlet opening is formed by a long tube extending in the longitudinal direction of the jet tube, the length of the baffle surface being approximately one third to four fifths of the length of the elongated hole, as viewed in the longitudinal direction of the jet tube.
  • the jet nozzle has a plurality, preferably three radial outlet openings, which are distributed uniformly in the circumferential direction of the jet pipe.
  • a cleaning Strahlgutstrom is obtained, which can be performed substantially similar to a bottle brush through a cylindrical cavity such as the inlet channel of a valve in internal combustion engines. If, for example, three circumferentially uniformly distributed outlet openings of the jet nozzle are provided, then the jet probe only needs to be rotated more than 120 ° around its longitudinal axis in order to impinge 360 ° of the surrounding walls with blasting material.
  • the jet nozzle has a nozzle body which has a bore extending in the longitudinal direction of the jet pipe, which forms a Strahlgutkanal, which opens into the radial outlet openings and its end located in the beam direction is formed by the baffles , which form a roof or pyramid-shaped deflecting body.
  • the production of the beam probe according to the invention can be simplified. In particular, this makes it possible to easily produce jet probes of different lengths.
  • the Strahlgutkanal in the nozzle body has a larger diameter than the jet stream emerging from the jet pipe, so that the action of Strahlgutstroms is reduced to the inner walls of the bore in the nozzle body, whereby the life of the nozzle body is significantly increased.
  • the nozzle body in particular the deflecting body, is hardened.
  • the beam probe according to the invention is used with a device for cleaning cavities, which has a connectable to the rear end of the Strahlsonde Strahlgutzumoltechnisch whose input end is connected to a device which is connected to a Strahlgután and via a compressed gas line to a source of pressurized gas can be connected to mix granular blasting with a compressed gas.
  • Such a device for cleaning cavities can be conveniently used in the workshop, since there is usually compressed air as compressed gas for a variety of applications available, which can then be used together with cleaning powder as a granular blasting to cavities, especially narrow coked cavities in internal combustion engines without their Removal to clean.
  • Figure 1 is a simplified schematic block diagram of a device for cleaning cavities with a beam probe according to the invention
  • Figure 2 is a simplified schematic sectional view of a cavity to be cleaned in an internal combustion engine during a cleaning process by means of a beam probe according to the invention
  • Figure 3 is a plan view of a beam probe according to the invention according to a first embodiment of the invention
  • Figure 4 is a section through the front end of the beam probe according to the invention shown in Figure 3;
  • FIG. 5 shows a beam probe according to a preferred embodiment of the invention
  • Figure 6 is a section substantially along line VI-VI in Figure 5;
  • FIGS 7A to 7C simplified representations of the beam probe according to the invention to illustrate the emerging from the various jet nozzles Strahlgutströme.
  • corresponding components are provided with the same reference numerals.
  • Figure 1 shows an apparatus for cleaning cavities with a jet probe 10, which is connected at its rear end with a Strahlgutzufish Gustav 1 1, whose input-side end is connected to a mixing device 12, in the blasting with compressed gas, eg. B. compressed air is mixed, so that the jet probe 10 via the Strahlgutzu slaughterfishtechnisch 1 1 a Strahlgutstrom can be supplied.
  • the mixing device 12 is connected for this purpose on the one hand via a line 14 to a blasting material 15 serving as Strahlgut matterer 15 'and on the other hand connected via a compressed gas line 16 to a compressed gas source, not shown.
  • the compressed gas line 16 is provided with a connection coupling 17 which can be connected, for example, to the compressed air system of a workshop.
  • the blasting, z. B. a cleaning powder in the mixing device 12 sucked by the air flowing through this compressed air, for example in the manner of a siphon or a water jet pump and mixed with this, so that the compressed air, together with the granular blasting material that transports them as Strahlgutstrom 24 of the blast probe 10 is supplied become.
  • FIG. 2 shows an inlet channel 18 of an inlet valve 19 in a cylinder head 20.
  • the inlet valve 19, which is guided in the cylinder head 20 by means of a valve guide 21, serves to close and release an outlet opening 22 of the inlet channel 18 which at the same time forms an inlet opening of a cylinder space (not shown) in the cylinder block 23.
  • the inlet channel 18 and the inlet valve 14 tend to coke, so that these inlet channels 18 have to be cleaned from time to time depending on the type of operation of the internal combustion engine.
  • a cleaning powder is irradiated as granular blasting material against the walls of the inlet channel 18 and the exposed surfaces of the inlet valve 19, that in FIG. 2 impurities not shown in detail are removed from the cleaning powder in the manner of sandblasting from the surfaces to be cleaned.
  • the cleaning powder is introduced as Strahlgutstrom 24 through a Strahlgutkanal 25 of the jet probe 10 into the interior of the inlet channel 18 and directed through a provided at the front end of the jet probe 10 jet nozzle 27 against the inner walls of the cavity.
  • the jet probe 10 If the jet probe 10 is rotated about its longitudinal axis, the jet stream exiting with a radial component is correspondingly pivoted and the cleaning powder of the jet stream 24 can act on and clean all the walls of the cavity to be cleaned, ie the inner walls of the inlet channel and the surfaces of the inlet valve 19.
  • the jet probe 10 shown in FIG. 3 has a jet pipe 28, at the front end of which, in FIG. 3, the jet nozzle 27 is provided.
  • the jet nozzle 27 comprises a radial outlet opening 29, which is preferably designed as a slot, and a baffle 30, which is arranged obliquely to the longitudinal axis 31 of the jet pipe, as can be seen particularly well in Figure 4.
  • the angle which encloses the baffle surface with the longitudinal axis 31 of the jet pipe, in the illustrated embodiment is 35 °. However, it can also be larger or smaller, depending on the direction in which the Strahlgutstrom to be directed, which in turn is dependent on the geometry of the cavities to be cleaned.
  • the angle ⁇ is selected to be larger or smaller.
  • the angle ⁇ is in the range between 50 ° and 20 °, in particular in the range between 40 ° and 30 °.
  • particularly good cleaning results were achieved in intake passages of intake valves in internal combustion engines at an angle ⁇ between the impact surface 30 and the longitudinal axis 31 of the jet pipe 28 of 35 °.
  • a cutting ring 32 is provided in the region of the jet nozzle 27 facing away from the end of the jet pipe 28 which together with a union nut 33 serves the StrahlgutzuWORKtechnisch safely with the Screw probe 10 in the connection area. So that the user of the jet probe 10 knows after the insertion of the jet nozzle 27 into the cavity to be cleaned, in which direction the Strahlgutstrom 24 exiting the jet nozzle 27 is in the rear region of the jet pipe 28 on the outlet opening 29 of the jet nozzle 27 diametrically opposite side Washer 34 attached, in particular welded.
  • a jet nozzle 27 is placed on the front end of the jet tube 28 in FIG. 5, which has a nozzle body 26 which has a bore 35 extending in the longitudinal direction of the jet tube 28, which has a jet channel 36 forms, which opens into radial outlet openings 29 29.
  • the jet pipe 28 is inserted into the bore 35 of the nozzle body 26 and preferably welded to the nozzle body 26, in particular spot-welded. Since the diameter of the blasting material channel 35 is thus greater than the diameter of the blasting material channel 25 in the blasting tube 28, practically no blasting material strikes the inner circumferential surface of the blasting material channel 35 in the nozzle body 26, as a result of which the wear is reduced.
  • the nozzle body 26 has three circumferentially uniformly distributed outlet openings 29, each of which is assigned its own baffle 30.
  • the three baffles 30 thus form a conical or pyramidal deflecting body 37, which is supported by webs 38 between the outlet openings 29.
  • the baffles 30 are designed so that no blasting hits the webs 38.
  • the baffles 30 may be concave thereto.
  • two or more outlet openings can be provided distributed circumferentially. If, for example, two diametrically opposite outlet openings are provided, then the deflection body formed by its associated baffles is roof-shaped. Become more than three openings, so four or five circumferentially evenly distributed outlet openings with corresponding baffles provided, the conical deflecting body 37 is a four- or pentagonal pyramid.
  • the outlet openings 29 in the jet nozzle 27 according to Figure 5 are formed as slots.
  • the length of the baffles 30 in the longitudinal direction of the jet pipe 28, so the projection of the baffles 30 on the longitudinal axis 31 of the jet pipe 28 is shorter than the length of the outlet opening 29 forming the elongated hole ,
  • the length of the projection of the baffle surface 30 onto the corresponding longitudinal axis 31 of the jet pipe 28 is about one third to four fifths of the length of the elongated hole forming the outlet opening 29.
  • FIGS. 7A to 7C schematically illustrate the deflection of the jet stream 24 at the baffle 30 (s) 30 of the jet nozzles 27.
  • the divergent jet stream 24 'leaving the outlet opening of the nozzle 27 has both radial and axial components. so that by rotation of the jet probe about its longitudinal axis of the exiting Strahlgutstrom 24 'can be pivoted by 360 °.
  • the embodiment of the invention according to FIG. 5 provides three jet streams 24 "emerging from the corresponding outlet openings 29 of the jet nozzle 27, which are arranged circumferentially staggered by 120 ° in accordance with the arrangement of the outlet openings
  • the jet probe 10 it is only necessary to rotate the jet probe 10 by 120 °, so that the Strahlgutströme 24 "each have to be pivoted by 120 ° to the full circle with blasting material, so with appropriate granular detergents beauf- to be able to beat.
  • the beam probe 10 according to the invention makes it possible, by simple displacement and rotation about its longitudinal axis, to act upon all the walls of a cavity to be cleaned with cleaning powder as blasting material and thus to clean it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne une sonde de projection (10) conçue pour introduire une matière de grenaillage dans une cavité, en particulier dans une cavité étroite calaminée, par exemple un conduit d'admission (18) d'une soupape (19) d'un moteur à combustion interne, en particulier pour la nettoyer, comprenant un tuyau de projection (28) pouvant être raccordé à une conduite d'alimentation en matière de grenaillage (11) par une extrémité arrière, et une buse de projection (27) qui est agencée à l'extrémité avant du tuyau de projection (28) et qui comporte au moins une ouverture de sortie (29) pour la matière de grenaillage, située de manière radiale par rapport à l'axe longitudinal (31) du tuyau de projection (28) et à laquelle est associée une surface d'impact (30) agencée de manière inclinée par rapport à l'axe longitudinal (31) du tuyau de projection (28).
EP18700211.8A 2017-01-13 2018-01-10 Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité Active EP3568261B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017100159.8U DE202017100159U1 (de) 2017-01-13 2017-01-13 Strahlsonde zum Einbringen eines körnigen Strahlguts in einen Hohlraum
PCT/EP2018/050507 WO2018130540A1 (fr) 2017-01-13 2018-01-10 Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité

Publications (2)

Publication Number Publication Date
EP3568261A1 true EP3568261A1 (fr) 2019-11-20
EP3568261B1 EP3568261B1 (fr) 2021-09-01

Family

ID=58054813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18700211.8A Active EP3568261B1 (fr) 2017-01-13 2018-01-10 Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité

Country Status (7)

Country Link
US (1) US20190366507A1 (fr)
EP (1) EP3568261B1 (fr)
CN (1) CN110191782B (fr)
CA (1) CA3050032C (fr)
DE (1) DE202017100159U1 (fr)
ES (1) ES2898750T3 (fr)
WO (1) WO2018130540A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019138240A (ja) * 2018-02-13 2019-08-22 トヨタ自動車株式会社 燃料配管
DE102018130598A1 (de) 2018-11-30 2020-06-04 ZELL Oberflächentechnik GmbH & Co. KG Vorrichtung, Umlenkstift und Verfahren zum Bearbeiten von Oberflächen in Totraumbohrungen

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439032A (en) * 1945-11-01 1948-04-06 Gen Motors Corp Shot blasting nozzle
US2739424A (en) * 1953-01-05 1956-03-27 Donald E Hilliard Method of sandblasting
US4180948A (en) * 1977-07-15 1980-01-01 Stoltz Woodrow W Internal pipeline cleaning device
DE3527923A1 (de) * 1985-08-03 1987-02-12 Baiker Ag Verfahren und vorrichtung zum verfestigen der wandung einer bohrung durch kugelstrahlen
DD282414A5 (de) * 1989-04-14 1990-09-12 Ingenieurschule Fuer Kraft Und Strahlduese zur oberflaechenbehandlung schwer zugaengiger bauteile
US5125425A (en) * 1991-02-27 1992-06-30 Folts Michael E Cleaning and deburring nozzle
US6350185B1 (en) * 2000-02-09 2002-02-26 Space Systems/Loral, Inc. Grit blast nozzle for surface preparation of tube
JP2002239909A (ja) * 2001-02-09 2002-08-28 Sintokogio Ltd 中・小型機械部品の内面用の砥粒噴射ノズル機構
WO2004037108A1 (fr) * 2002-10-23 2004-05-06 Kaltenbach & Voigt Gmbh & Co. Kg Canule pour piece a main utilisee en medecine ou en medecine dentaire, pour pulveriser un milieu d'ecoulement abrasif
US7125322B1 (en) * 2004-09-17 2006-10-24 Electronics, Inc. Media transport device providing stable flow of media
DE102008010847A1 (de) * 2008-02-25 2009-08-27 Rolls-Royce Deutschland Ltd & Co Kg Verfahren und Vorrichtung zum Kugelstrahlverfestigen von Bliskschaufeln
FR2962323B1 (fr) * 2010-07-07 2012-08-10 Conception Des Applic Des Tech Electroniques Soc Pour Buse pour polisseur
DE102010039696A1 (de) 2010-08-24 2012-03-01 Tunap Industrie Chemie Gmbh & Co. Produktions Kg Verfahren und Vorrichtung zur Reinigung von verkokten Hohlräumen insbesondere von Einlasskanälen und Ventilen eines Verbrennungsmotors
EP2565416A1 (fr) 2011-08-31 2013-03-06 Tunap Industrie Chemie GmbH & Co. Produktions KG Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne
WO2013099411A1 (fr) * 2011-12-26 2013-07-04 新東工業株式会社 Procédé de traitement à la grenaille et dispositif de traitement à la grenaille
EP2848367B1 (fr) * 2013-09-11 2016-03-23 Rolls-Royce Deutschland Ltd & Co KG Appareil et procédé pour le grenaillage de surfaces de montage de lame sur le disque d'un agencement de rotor
DE102013111740A1 (de) * 2013-10-24 2015-04-30 Fritz Winter Eisengiesserei Gmbh & Co. Kg Vorrichtung zum Entfernen von Gießkernrückständen
KR20160096930A (ko) * 2015-02-06 2016-08-17 배명일 디젤엔진의 흡기구 세정장치

Also Published As

Publication number Publication date
US20190366507A1 (en) 2019-12-05
CA3050032A1 (fr) 2018-07-19
WO2018130540A1 (fr) 2018-07-19
CN110191782B (zh) 2021-06-29
ES2898750T3 (es) 2022-03-08
BR112019014324A2 (pt) 2020-02-11
DE202017100159U1 (de) 2017-01-27
EP3568261B1 (fr) 2021-09-01
CN110191782A (zh) 2019-08-30
CA3050032C (fr) 2021-03-30

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