EP1053077B1 - Strahlmittel-injektorpistole - Google Patents

Strahlmittel-injektorpistole Download PDF

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Publication number
EP1053077B1
EP1053077B1 EP99907398A EP99907398A EP1053077B1 EP 1053077 B1 EP1053077 B1 EP 1053077B1 EP 99907398 A EP99907398 A EP 99907398A EP 99907398 A EP99907398 A EP 99907398A EP 1053077 B1 EP1053077 B1 EP 1053077B1
Authority
EP
European Patent Office
Prior art keywords
closing valve
gun according
opening
water
actuating element
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
EP99907398A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1053077A1 (de
Inventor
Ralph Seitter
Bohumir Svoboda
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE 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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP1053077A1 publication Critical patent/EP1053077A1/de
Application granted granted Critical
Publication of EP1053077B1 publication Critical patent/EP1053077B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24C7/0084—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a mixture of liquid and gas
    • 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
    • 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

Definitions

  • the invention relates to a blasting agent injector gun with separate inlets for compressed air, water and blasting media and an outlet for that with compressed air and water mixed blasting media, with a first Mixing device in which water is added to the compressed air and with a second mixing device, in the the compressed air-water mixture the blasting agent is added.
  • An injector gun is known from DE 90 00 178 U1, at what air and abrasive in the gun are mixed, then this dry air / abrasive mixture water added. It has been found that such Arrangement a complete and reliable Mixing is difficult to achieve.
  • the subject of the application lies based on the task of preventing that atomized water enters the gun and wet, instead of moistened abrasive becomes.
  • This task is done with a blasting agent injector gun of the type described above according to the invention solved in that the compressed air supply and the water supply are closed with closing valves and that an opening device is provided for these closing valves which is the shutoff valve of the water supply only opens when the compressed air supply shut-off valve opens is.
  • Such an opening device ensures that water is only pumped when there is a flow of compressed air is present, it is therefore impossible that liquid, non-atomized water into the gun entry. It also ensures that propellant flowing through the gun in the suction area the abrasive particle water only in one Contains amount that leads to a very fine atomization leads so that no wet abrasive is released is, but only moistened.
  • the first mixing device is an injector with the compressed air flow as the blowing agent flow.
  • the water can flow to the compressed air can be added, preferably here Water with mains pressure can be used, i.e. with a pressure of, for example, 6 to 12 bar.
  • the second Mixing device an injector with the compressed air / water flow as a blowing agent flow.
  • an injector leads to a particularly uniform mixing of the Compressed air / water flow on the one hand with the propellant flow on the other hand, and thus to the desired wrapping effect of the individual abrasive particles.
  • the opening device is a Movable actuator comprises, which at an opening movement first the closing valve of the Compressed air supply and then the closing valve of the Water supply opens.
  • Such an actuator ensures that the compressed air supply always comes first is open, and only then the water supply is opened when the compressed air supply is already open is.
  • the opening points of the two closing valves along the opening movement of the actuator are adjustable. Thereby the possibility is given, even with structural Tolerances the sequential Ensure opening of the closing valves. Moreover can with a progressive opening of the closing valve be selected in the compressed air line at what strength of the compressed air flow the water supply should start.
  • the operative connection between the actuating element and the shut-off valve of the water supply optionally and can be switched off, so that the actuating element Water supply shut-off valve during its opening movement either after the closing valve of the compressed air supply opens or keeps it permanently closed.
  • the user thus has the choice of whether he clicks on the Actuator generate a stream of compressed air wants to be mixed with water, or one completely dry compressed air flow. If he has the water supply wishes, it will only be opened when the compressed air flow is open when there is a water supply is not desired by pressing of the actuator only the closing valve Compressed air supply opened, but not the closing valve the water supply.
  • Switching the active connection on or off is a movement transmission element is provided that in switched on Condition the movement of the actuating element the shut-off valve transfers the water supply when switched off Condition is positioned so that a such motion transmission is not possible.
  • a particularly preferred embodiment includes provided that the motion transmission member a is a plunger mounted in a guide, a thrust transmission link when switched on between the actuator and the closing valve the water supply forms.
  • the guide with the plunger in the gun between an on and an off Position can be moved. If the Plunger is in the transfer position, he can transmit a pushing motion to the closing valve, if, on the other hand, he moves out of this transfer position is the power transmission between the actuator and shut-off valve of the water supply interrupted, so that even when the actuating element moves no opening of the closing valve Water is supplied.
  • the actuating element for Opening the closing valve of the water supply with a Driver on a stop of the closing valve to the system comes and when at the beginning of the opening movement of the Actuator a distance between the driver and Stop exists, which is in the opening movement of the Actuator reduced to the system.
  • the shut-off valve of the water supply at the start of the opening movement of the actuating element is not yet opened, but that this Opening only begins when the actuator is already part of its opening motion behind it brought.
  • the initial distance of the driver be adjustable from the stop, so that too is selectable when along the opening movement of the actuating element the opening of the closing valve Water is supplied.
  • the driver is mounted in a pistol-fixed guide Ram is, if necessary, with the interposition of a removable plunger a thrust on a valve body of the closing valve of the water supply transfers.
  • that the maximum opening cross section of the Closing valve of the compressed air supply is adjustable. The This gives the user the opportunity to change the strength of the Adjust compressed air flow.
  • the opening device the closing valve of the compressed air supply a movable Includes actuator, which at his Opening movement of the closing valve of the compressed air supply opens so that its opening cross-section to the end the opening movement of the actuating element continuously increases, and that the beginning of the opening of the Closing valve along the opening movement of the actuating element is adjustable so that until the end of Opening movement of the actuator a different Opening cross section of the closing valve can be reached is.
  • the Actuating element has a driver on one adjustable stop of the closing valve is present.
  • this stop be screwed onto a tension rod, which with a valve body of the closing valve of the compressed air supply connected is.
  • stop between two end positions are adjustable, in particular they can End positions in turn can be adjustable.
  • an end position can be changed to a Tension rod screwed nut are determined which the Screwing movement of the stop screwed onto the tension rod limited.
  • a different end position through a threaded plug screwed into the stop is determined to which the tension rod at the Screwing movement of the stop strikes the face.
  • the actuator on the gun be of any design, but is advantageous training as a pivot lever.
  • metered in the blasting agent supply closable false air opening is arranged, so that the amount of a certain compressed air / water flow dosed blasting media is.
  • the injector gun 1 shown in the drawing includes a two-shell housing 2 with two down protruding handles 3, 4 at their free ends are connected to one another via a web 5.
  • a valve block 6 is arranged in the interior of the housing 2, which is a step-widening blind hole 7 has.
  • this blind hole is on one
  • a ring-shaped valve seat 8 is inserted, the one with a longitudinally displaceable in the blind hole 7 guided valve body 9 cooperates.
  • This valve body 9 is with an operating rod 10 connected by a longitudinal bore 11 at the end the blind hole 7 emerges from the valve block 6 and the inside of the blind hole 7 by one Coil spring 12 is surrounded, which is on the ground the blind bore 7 supporting the valve body 9 seals against the valve seat 8.
  • valve body 9 and the valve seat 8 together form a closing valve 13 for a compressed air flow, the via a leading through the front handle 3 Compressed air line 14 in the rear part of the blind hole 7 occurs.
  • Compressed air supplied can be opened Closing valve 13 through the front part of the blind hole 7 flow out.
  • a sleeve-shaped insert 15 inserted from the housing 2 protrudes and there is a tubular extension 16 carries, in which a nozzle body 17 with a narrowing through opening 18 is inserted.
  • the tubular extension 16 surrounds between the Insert 15 and the nozzle body arranged at a distance from it 17 a cylindrical mixing chamber 19 into which substantially radially a supply line 20 for a Blasting material flows in, for example for sand.
  • a sleeve 21 is longitudinally displaceable stored in one position False air opening 22 in the wall of the supply line 20 closes, but releases it in the other position and thus a connection of the interior of the supply line 20 to the environment.
  • the insert also opens into the mixing chamber 19 15 penetrating and over the end into the mixing chamber 19 protruding pipe section 23, which the Mixing chamber 19 in the longitudinal direction over a large part their length.
  • This pipe section 23 forms one Injector.
  • the closing valve 13 open compressed air flows through the compressed air line 14 and that Pipe piece 23 and finally passes through the Through opening 18 from the gun.
  • the result trained compressed air flow breaks in the as an injector trained mixing chamber 19 abrasive particles the supply line 20, which deals with the compressed air mix evenly and finally together with this as a homogeneous mixture through the nozzle body 17 escape.
  • the water is there nebulized and torn into tiny droplets, so that A blowing agent flow occurs in the area of the mixing chamber 19, which consists of humidified compressed air in which smallest droplets distributed homogeneously in a compressed air stream are.
  • the blind hole 34 is by means of a threaded plug 38 closed and takes a closing valve 39 an annular valve seat 40 and one in the blind hole longitudinally displaceable valve body 41 on. This is achieved by attaching itself to the threaded plug 38 supporting coil spring 42 against the valve seat 40 pressed and can by this by an operating rod 43 are lifted off, which with the valve body 41st is connected in one piece and by a longitudinal bore 44 in the bottom of the blind bore 34 from the valve block 6 protrudes sealed.
  • valve body 41 sealingly rests on the valve seat 40 Water supply to the mixing chamber 24 is interrupted However, valve body 41 against the action of the coil spring 42 lifted from this valve seat 40, water can from the water connection 37 through the holes 36 and 35 and the blind hole 34 reach the feed line 25 and from there into the mixing chamber 24.
  • the two closing valves 13 and 39 are actuated via a pivot lever 45, which is inside the housing 2 is pivotally mounted and between the handles 3 and 4 down from the housing 2 protrudes.
  • the pivot bearing 46 is between the longitudinal axes of the blind hole 7 on the one hand and the blind hole 34 on the other hand, the The pivot axis runs perpendicular to these longitudinal axes.
  • the actuating rod 10 of the valve body 9 passes through the pivot lever 45 with play and protrudes at the rear end the housing 2 out of this.
  • a sleeve 48 is screwed on, in the housing 2 in the direction of the actuating rod 10 is slidably mounted and inside of the housing 2 surrounded by a coil spring 49 is, which is on the one hand support discs 50, 51 supported on the housing 2 and on the other hand on the pivot lever 45.
  • This coil spring 49 holds the pivot lever 45 in a front rest position, he can go against the Effect of this coil spring 49 in an open position be pivoted by the stop of the Swivel lever 45 on the housing 2 is limited.
  • At rest can the pivot lever 45 by a define pivotable latch 52, which on the web 5th is mounted between the two handles 3 and 4.
  • the sleeve 48 surrounds the operating rod 10 also emerges from the housing 2 and expands bowl-like in this area.
  • a threaded plug 54 is screwed in, the Screw-in depth by one on the threaded plug 54 screwed lock nut 55 can be fixed.
  • the cup-shaped extension 53 and the threaded plug 54 surround an interior space 56 into which the end of the operating rod 10 protrudes. Are on this end two nuts 57, 58 screwed on for fixing their position on the operating rod 10 as lock nuts are rotated against each other.
  • the sleeve 48 forms with its facing the pivot lever 45 Face 59 a stop on which the Swing lever 45 abuts when it is in the open position is pivoted. He takes the sleeve 48 with and moves this out of the housing 2, this at the same time the actuating rod screwed into it 10 takes along and thus the valve body 9 from the valve seat 8 takes off.
  • the sleeve 48 can on the external thread 47 of the operating rod 10 are rotated so that the Position of the sleeve 48 relative to the operating rod 10 is changeable.
  • the displacement of the sleeve 48 relative to the operating rod 10 is limited in both directions, however in one direction by hitting the End face 61 of the actuating rod 10 on the threaded plug 54 and in the other direction by striking the nut 58 on the bottom of the cup-shaped extension 53. These stops can be done by screwing the nut 58 and screwing the threaded plug 54 in their Position are changed, but they remain after one Initial setting usually unchanged.
  • the blind bore 34 is a rod-shaped plunger 62 slidably mounted in the housing 2, with the Swivel lever 45 through a lateral driver 63 is connected and when pivoting the pivot lever 45 is moved in the longitudinal direction, in opposite directions for the direction of displacement of the actuating rod 10.
  • the plunger 62 has a hat-shaped at its front end Mother 64 who is not on one in the drawing shown external thread of the plunger 62 screwed and is fixed there by means of a lock nut 65 becomes.
  • the mother 64 can have different depths be screwed onto the plunger 62 so that a front driving surface 66 of the mother 64 in her Position along the plunger 62 set differently can be.
  • a further tappet 68 is located in a guide block 67 mounted longitudinally displaceable, one end 69 of the Driving surface 66 and the other end 70 of the end the actuating rod 43 of the closing valve 39 is opposite.
  • This plunger 68 serves the movement of the plunger 62 to be transmitted to the actuating rod 43.
  • the driver surface 66 lies against the Tappet 68 and also moves this, so that this moves the operating rod 43 and the valve body 41 lifts off the valve seat 40.
  • the driver surface 66 is positioned so that between a space remains between her and the plunger 68, when the pivot lever 45 is in the rest position (FIG 2).
  • the content of the inflowing water can be determined using the Rotary handle 31 can be set by the Closing body 28 more or less deep in the conical Hole 27 is inserted, the amount of inflowing Compressed air can be turned by rotating the sleeve 48 on the Male thread 47 can be adjusted, and the amount of Blasted particles can be sucked in through the sleeve 21 are adjusted, the false air openings 22nd closes or opens more or less wide.
  • injector gun 1 it is also possible to use the injector gun 1 to operate with dry compressed air, i.e. without supply of water.
  • the guide block 67 with the plunger 68 is namely transverse slidable to the longitudinal direction of the plunger 68 on the housing 2 stored and can in the respective end positions of the shift.
  • the postponement takes place through lateral pins 71 opposite end faces of the guide block 67, which protrude laterally from the housing 2 ( Figure 5).
  • Coil spring 72 loaded ball 73 in a blind hole 74 stored by the coil spring 72 against a transverse wall 75 of the housing 2 on the underside of the guide block 67 is pressed.
  • the Tappet 68 In one end position of the guide block 67 is the Tappet 68 in the manner described with the tappet 62 on the one hand and the operating rod 43 on the other aligned, so can in the manner described Movement of the plunger 62 onto the actuating rod 43 transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
EP99907398A 1998-02-04 1999-01-21 Strahlmittel-injektorpistole Expired - Lifetime EP1053077B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19804233A DE19804233A1 (de) 1998-02-04 1998-02-04 Strahlmittel-Injektorpistole
DE19804233 1998-02-04
PCT/EP1999/000396 WO1999039874A1 (de) 1998-02-04 1999-01-21 Strahlmittel-injektorpistole

Publications (2)

Publication Number Publication Date
EP1053077A1 EP1053077A1 (de) 2000-11-22
EP1053077B1 true EP1053077B1 (de) 2002-12-04

Family

ID=7856530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99907398A Expired - Lifetime EP1053077B1 (de) 1998-02-04 1999-01-21 Strahlmittel-injektorpistole

Country Status (4)

Country Link
EP (1) EP1053077B1 (da)
DE (2) DE19804233A1 (da)
DK (1) DK1053077T3 (da)
WO (1) WO1999039874A1 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20004788U1 (de) 2000-03-15 2000-06-21 Schmidt Sandstrahltechnik GmbH, 91747 Westheim Handhebel
GB0100756D0 (en) 2001-01-11 2001-02-21 Powderject Res Ltd Needleless syringe
DE60313981T2 (de) * 2002-07-23 2008-01-24 Grechishkin, Oleg Ivanovich Schleuderstrahlvorrichtung
GB0708758D0 (en) 2007-05-04 2007-06-13 Powderject Res Ltd Particle cassettes and process thereof
CN103008134B (zh) * 2012-03-21 2015-04-01 北京恩萨工程技术有限公司 一种喷枪及利用该喷枪实现将半固态介质分散输送方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200587A (en) * 1937-02-25 1940-05-14 Hydroblast Corp Method and apparatus for sand blasting
US3828478A (en) * 1973-06-25 1974-08-13 E Bemis Fluid-jet-abrasive device and system
US4057940A (en) * 1976-12-02 1977-11-15 Otto Wemmer Control for sand blasting nozzle
EP0059173A3 (en) * 1981-02-19 1982-10-13 C.I.S.A S.r.l. Sandblasting machine for the superficial cleaning of any kind of object
US5099619A (en) * 1989-08-07 1992-03-31 Rose Leo J Pneumatic particulate blaster
DE4225590C2 (de) * 1992-08-03 1995-04-27 Johann Szuecs Vorrichtung für die Behandlung von empfindlichen Oberflächen, insbesondere von Skulpturen

Also Published As

Publication number Publication date
WO1999039874A1 (de) 1999-08-12
DK1053077T3 (da) 2003-01-06
DE59903647D1 (de) 2003-01-16
EP1053077A1 (de) 2000-11-22
DE19804233A1 (de) 1999-08-12

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