US2200587A - Method and apparatus for sand blasting - Google Patents

Method and apparatus for sand blasting Download PDF

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Publication number
US2200587A
US2200587A US127620A US12762037A US2200587A US 2200587 A US2200587 A US 2200587A US 127620 A US127620 A US 127620A US 12762037 A US12762037 A US 12762037A US 2200587 A US2200587 A US 2200587A
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United States
Prior art keywords
sand
gun
nozzle
water
liquid
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Expired - Lifetime
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US127620A
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English (en)
Inventor
Leslie L Tirrell
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HYDROBLAST Corp
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HYDROBLAST CORP
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Publication date
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Priority to US127620A priority Critical patent/US2200587A/en
Priority to GB18808/37A priority patent/GB498478A/en
Priority to NL47980A priority patent/NL47980C/xx
Priority to FR832979D priority patent/FR832979A/fr
Application granted granted Critical
Publication of US2200587A publication Critical patent/US2200587A/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • 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
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • 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

Definitions

  • This invention relates to a method and apparatus for sand blasting devices, and more particularly to a m'ethod and apparatus for cleaning by abrasion which includes means whereby surnozzle retaining sleeve with means for cleaning the thread of the gun body when the two are screwed together.
  • a further object is to provide a method and tionship to each other so that a chamber I2 is DEC 14 i948 5 faces are abraded with a Wet abrasive by the inapparatus for cleaning by abrasion in which the 5 troduction of a supply of air and abrasive into abrasive, after a cleaning operation, may be cola Water stream, operated under high pressure. lected, classified, and recirculated through the
  • the present application is a continuation in machine. part of my earlier application, Serial No. 37,585, y Another object of my invention is to provide filed August 23, 1935.
  • V a process and apparatus for cutting coherent 10
  • the main object of my invention is to provide solids which reclaims and' utilizes particles cut a method and apparatus for sand blasting which from the solid as abrading material. utilizes a liquid carrying medium for projecting
  • a further object is to provide a. feeder in conabrasive material at high velocity and entrains nection with the collecting means for the used i5 a large amount of the abrasive material in a Vsand or particles, and in which a suction is crel5 concentrated and forceful stream. ated by the gun for lifting the sand from the Another object of my invention is to provide collecting means.
  • apparatus and a method for controlling the 'A further object is to provide means within spread of a, projected stream of liquid carrying the feeder for keeping the sand and water in a medium, such as water, having sand or other mobile condition and to provide easy starting 20 abrasive material entrained' therein whereby the of the gun after a period of inoperation.' stream may be varied from a thin concentrated With the above and other objects in view the pencil to awide spray.
  • y Fig. 4 is a sectional View of the feeder cut 40
  • a further object is to provide a simple method along the line of 4--4 of Fig. 3; 40 and means for vcleaning the abrading material
  • Fig. 5 is avertical longitudinal sectional view from the gun, piping, and feeder. through the platform, and sand classifier, showx
  • a further object is to provide a self-sealing
  • a Fig. 1 which shows the gun as a whole, the gun feature of this joint being that-it compensates comprises an elongated casing i tted with a for wear on the packing material Without hand hand grip 2 at the forward end and an arm rest 50 adjustment and constantly assumes the mini- 3 at the rear.
  • a tube l mum degree of resistance to turning consistent made up of the axially aligned sections 5, 6, 1, with the pressure against which it is required 8, and 29.
  • tandem nozzles, 9, i0, and Il, in spaced rela- A further object is to provide the discharge 55 provided inside the tube 4 between the rear noz? zle II and the intermediate nozzle IIJ and another chamber I3 is provided between the intermediate nozzle I0 and the front nozzle 9.
  • the opening in the intermediate nozzle I0 is larger than that in the rear nozzle II, but smaller than the opening in the front nozzle 9. Therefore, it will be seen that as the high pressure fluid stream leaves the rear nozzle I I and passes through the chamber I2 and intermediate nozzle I0, no back pressure will result since the natural expansion of the stream is compensated for by the increased cross-sectional area of the middle nozzle I0. In a like manner the increased diameter of the stream as it passes from the middle nozzle I0 to the front nozzle 9 is provided for by the larger opening in the front nozzle 9.
  • a nozzle casing 5 forms the holder for the resilient discharge nozzle 9 and consists of a sleeve with a forward cut-away section of reduced diameter, an axial hole I4 through the sleeve to receive the nozzle liner 9, an annular recess I5 to receive the flange of the nozzle liner, an internal thread I6 of larger diameter than the hole I4 thatv is fitted to a thread I1 of the tube 6, and an annular recess I8 near its rear end containing a rubber ring I9 that clamps against the tube 6 when sections 6 and 5 are screwed together, effectively brushing the thread free from sand and dirt.
  • the recess I8 has one or more holes 20 extending radially outwardly from its circumference, which fit over one or more knobs 2I on the circumference of the rubber ring I9, thereby forcing the ring I9 to revolve with the sleeve 5.
  • the discharge nozzle 9 is of substantially cylindrical section with an external annular ridge 22 near its center and a cylindrical axial hole 23 extending through it.
  • the hole 23 is tapered outwardly and rearwardly from a point near its rear end.
  • the discharge nozzle 9 is preferably made of rubber or other resilient material since these materials being resilient, are much more resistant to abrasion than are metals. Disposed within the recess I5 and held against the outer end of the tube 6 is the ridge 22 of the nozzle liner SI; ⁇
  • the nozzle liner 9 will not be forced from the gun by the projected abrasive.
  • the wet sand is brought into the gun through a hose connection 24 which opens into the lower side of the chamber I3. Therefore, it will be seen that the course of the sand is through the hose connection 24, chamber I3 and nozzle 9 only, and since the movement of the sand is not rapid until it starts flowing through the nozzle 9, wear is largely restricted to this latter part.
  • the middle nozzle I0 has a cut-away forward section of reduced diameter, an ain'al hole 25 of varying diameter, being smallest at a point somewhat forward of its center; it tapers from this point outwardly in both directions.
  • Axiaily through the rearnozzle II is a hole 26 which tapers outwardly and forwardly from a point near the forward end of the nozzle.
  • the external forward surface of the nozzle II tapers at 21 inwardly and forward from about the same position longitudinally that the internal taper begins.
  • the front of the nozzle II is somewhat behind the rear of l the nozzle I0, forming a chamber I2 between the two in the tube 4.
  • a needle valve 38 of well known design is screwed into a threaded opening 39 ⁇ leading into the chamber I2 so that by adjusting this valve 38 varying ainounts of air can be allowed to flow into the chamber I2.
  • section 29 of irregular shape containing the inlet 4I for water under relatively high pressure having at its outward end a threaded section 42 for connecting the water hose.
  • the chamber 43 containing the water inlet valve 44 Extending rearwardly through the section 29 is the chamber 43 containing the water inlet valve 44, provided with a knob 96.
  • This valve is of well known design excepting that it has a novel means for sealing the valve stem 45 consisting of two circular washers 46 and 41 that fioat on the valve stem 45 and contain a quantity of packing substance 48 between them.
  • the water pressure builds up on the forward side of the washer 46, it moves it rearwardly and compresses the packing 48, since the rear washer 47 is held in place by the forward face of the valve gland 49. This compression of the packing 48 forces it against the valve stem 45 and against the cylindrical surface 5U.
  • the above working parts of the gun are enclosed within the casing which consists of two main parts.
  • the part I is of irregular shape so formed as to have a cavity 5I to take the working parts of the gun.
  • a projection 2 extending downwardly near the front of the gun covers the sand hose for a short distance and serves as a handle to be held in the left hand, and a projection 3 extending rearwardly behind the working parts of the gun is to be held in the crook of the right arm.
  • a cover plate 52 is held to the case I by means of screws 53, effectively enclosing the working parts of the gun and holding them rigidly in place by means of the pressure of bosses 54 on a ridge 28.
  • the sand feeder 55 consists of a cap 56 provided with a downwardly extending axial tube 51 through which sand is drawn to the hose and thence to the gun.
  • the tube 58 closed at the bottom by the cap 59 and at the top by the cap 56, having a plurality of holes 60 arranged radlally'around ,it near the lower end through which the sand and water mixture is drawn.
  • the tube 6I closed at the bottom by the base 62 and sealed against the tube 58 at the top by the cap 63.
  • a plurality of holes 64 somewhat closer to the top of the feeder than the holes 60.
  • the suction on the tube 51 draws thewater from the feeder which sets up a current throughthe holes 64, 61 and 60 and draws a slurry of abrasive and water from the tank 68 through these holes and up through the tube 51 to the sand hose and gun.
  • the holes 60 are made small so that the mixture has to move rapidly through them, thereby setting up the necessary current while the holes 64 are much larger so that the sand coming from the sand tank 68 moves relatively slowly into the feeder, thereby preventing a cone to the surface A forming around the feeder.
  • The'cap 56 has av connection 69 with an outside water supply communicating with the chamber between theA tubes 58 and 51. This water supply is controlled by a valve 10 and is used for flushing sand from the feeder, hose,
  • the feeder 55 is shown in a sand tank 68. It is connected with the gun by the hose 1
  • the tank 68 is covered by a platform 14 on which the operator can stand and to which the projected abrasive and abrasive such as core and moulding sand out or cleaned from the castings is washed by the water from the gun after being projected from the gun.
  • the platform 14 is provided with holes 15 through which the sand and water mixture runs into a hopper 16 of a sand classifier 86.
  • the hopper 16 of the sand classifier is provided a screen 11 sloping toward a sludge tank 18 which is separated from the sand tank 68 by a partition 19.
  • Thisl screen allows the sand, water and sludge mixture to pass through into a chamber 80 while rejecting larger particles downwardly through a. trough 8
  • Communicating with the chamber 80 is a downwardly extending passageway 82 which is open at its bottom to an upwardly extending passageway 83 adjacent thereto.
  • the top of the passageway 83 communicates with a water and sludge trough 84 which slopes downwardly and empties into the sludge tank 18.
  • the bottom of the passageway is provided.
  • the sand, water and sludge mixture runs through the holes 15 inthe platform 1d and on to the screen where the large particles are separated from the ⁇ mixture and projected downwardly through the trough 8
  • the sand, water and sludge mixture, freed of the large particles, ows through the screen, downwardly through the chamber and passageway 82 and into the passageway 83. From here the water carrying 75 the sludge iiowsv upwardly through the passage-J way 83, downwardlyfthrough the trough and into the sludge tank 18.
  • the pressure in the water hose leadingto the gun is relatively high, in Ithe nature of 700 to 1000 pounds to the square inch, which causes the hose to become more or less rigid. Consequently, it is preferred'to incorporate a swivel joint between the hose and gun.
  • the swivel joint, Fig. 2 consists of three sections
  • 00 has an external thread
  • 00 is the part
  • the operation of the machine is as follows: When the high pressure water hose and sand hose are connected to the gun, the operator grasps the handle 2 in his left hand, holds the stock 3 in the crook of his right'arm and opens the water valve 44 by turning the knob 90. Thewater flows through the opening 4
  • the size of the opening in nozzle l0 is such that the water stream lls it without producing any back pressure. Consequently, since the diameter of the stream leaving the chamber E2 is larger than the diameter of the stream entering the chamber, a depression in air pressure is produced in the chamber l2.
  • the water valve 10 When it is desired to put the gun out of operation for a while, the water valve 10 is opened, 'a1- lowing water to iiow into the chamber between.
  • this chamber back through the holes 60, 61 and' 64 into the sand tank and also up through the tube 51 to the gun, thereby cleaning the feeder, hose and gun o'f sand.
  • the apparatus is cleared oi sand and the valve 10 may be closed.
  • valve 44 When it is desired to put the gun back into operation it is only necessary to open the valve 44 as usual and in a few seconds the system will be filled with sand again.
  • An abrading gun comprising an elongated body member with a water intake at one end and a discharge nozzle at the other end of said body member for projecting a fluid stream, a rear nozzle Within the body member forwardly of the water intake for creating a high velocity water stream within the body, an intermediate nozzle within the body member between the rear nozzle and the discharge nozzle, said intermediate and rear nozzles having their bores in axial forth, what is f 'l limbal
  • An abrading gun comprising a body member having a liquid intake end and a fluid discharge end for projecting a. stream oi iluid, a nozzle forming the iluid discharge end, spaced axially aligned nozzles within the body member having chambers around their discharge ends.
  • means for automatically ⁇ cleaning the thread .of the gun body whenever the nozzle is screwed on the gun consisting of a threaded nozzle containing an annular recess at the outside end of the thread, and an annular rubber ring -in the bedded in the abrading material, said supply pipe extending into said Acylinder in spaced relation to the inner periphery thereof, and a baffle plate within said cylinder and having openings through which abrading material passes to the 'supply pipe, all for the purpose of preventing packing of sand in the supply pipe.
  • means for feeding the abrading material to a supply pipe comprising an apertured chamber gto be embedded inthe abrading materlal, said supply pipe extending into said chamber, and one or more apertured chambers inside the iirst said chamber so arranged that the abrading material must pass through the last said chamber or chambers before reaching the supply pipe, for the purposeI of preventing packing of sand in the supply pipe.
  • a feeder of the class described consisting of a sand pipe; a shell around the sand pipe opening, said shell being closed at the bottom and top and having a plurality of holes around the bottom; a second shell around the rst shell, said second shell being closed at the bottom and top, and having holes near the bottom; these last said Y holes having a greater total area andbeng higher up than the holes in the iirst named shell.
  • a feeder of the class described consisting of a sand pipe; a shell around the sand pipe opentop andhaving a plurality of hols around the and means to admit abrasive particles mixedl with water between the middle nozzle and the bottom; a second shell around the first shell, said second shell being closed at the bottom and topiand having holes near the bottom, these ,last said holes having -a greater total area land being higher up than the holes in the first named shell; and a connection to an outside water supply between the first and second shells for washing out the feeder, sand hose and gun.
  • a gun body provided with three nozzles in tandem, means to project a high pressure liquid stream through said three nozzles, valve means to admit air between the rear nozzle and the middle nozzle,
  • a gun a sand supply system comprising a sand supply conduit connected to said gun, a feeder connected to the conduit, said feeder adapted to be inserted in a tank of wet sand to feed a sand slurry therefrom; and means to admit a substantially sand free uid to the feeder in such a position that sand is washed from the feeder, supply conduit, and gun.
  • a hydraulic sand blasting device comprising: an elongated body member having water intake and discharge ends,
  • the method of controlling the-spreading of a projected liquid jet which comprises the steps of mixing rareed air with ⁇ the liquid before it is finally projected as a jet and adjusting f the amount of said air that is mixed with the liquid.
  • 16.- 'I'he method of projecting abrasive material with a relatively non-compressible fluid carrying medium which comprises the steps of mixing with the relatively non-compressible fluid carrying medium a controlled amount of ext pansible uid to provide a relatively porous fluid mixture, then separately mixing abrasive material with the porous uid mixture and projecting the mixed abrasive and porous fluid.
  • the method of projecting abrasive material comprising the steps vof subjecting a supply of liquid carrying medium to high pressure, restricting the now of the saidiliquid carrying medium to a high velocity jet, passing said jet through a. chamber to produce a partial vacuum in said chamber, admitting air to said chamber through a restricted orifice and incorporating said air in the liquid stream, restricting and projecting the liquid canying medium as a second high velocity jet, admixing granular abrasive with the second high velocity jet, and projecting the liquid carrying medium and admixed air and abrasive as a high velocity jet.
  • the method of projecting abrasive material comprising the steps of subjecting a supply of water to high pressure, restricting the iow of water to a high velocity jet, restricting. the ampunt and-pressure of air surrounding the jet so as to admix with the jet a lcontrolled amount of rarefied air, restricting and reprojecting water and admixed air through a slurry of admixed water and granular abrasive, and projecting the water, air, and granular abrasive as aphlgh veloclity jet.
  • the methodof cleaning or cutting with an abrasive material which comprises the steps of admixing liquid with a supply of granular abrasive, subjecting a liquid carrying medium to high pressure, projecting the liquid carrying medium as a. high velocity jet, admixing air with the projected jet of liquid carrying medium, repojecting the liquid carrying medium and admixed air as a. second high velocity jet, utilizing the force of the second high velocity jet to pump admixed liquid and granular abrasive, entraining the admixed liquid and granular abrasive in the second high velocity jet, and projecting the liquid carrying medium and entrained granular abrasive and air as a third high velocity jet.
  • the method of cleaning or cutting with an abrasive material which comprises the steps of admixing liquid with a supply of granular abrasive, subjecting a liquid carrying medium to high pressure, ⁇ projecting the liquid carrying medium asa high velocity jet, admixing air with the projected jet of liquid carrying medium, restricting and projecting the liquid carrying medium and admixed air as a second high velocity jet, pumping the admixed liquid and granular abrasive by the force of the second jet, entraining the admixed liquid and granular abrasive in the second jet, projecting the liquid carrying medium and entrained granular abrasive as a high velocity jet, and reclaiming and reusing the granular abrasive.
  • the method of cleaning or cutting with an abrasive material which comprises the steps of admixing liquid with a supply of granular abrasive, subjecting a liquid carrying medium to high pressure, projecting the liquid carrying litt medium as a high velocity jet, admixing air n with the projected jet of liquid carrying medium, restricting and projecting the .liquid carryi of admixing liquid with a supply of granular 6 i abrasive, subjecting a.l liquid carrying medium to high pressure, projecting the liquid carrying medium asa high velocity jet, admixing air with the projected jet of liquid canying medium, restricting and projecting the liquid carrying medium and admixed air as a second high velocity jet, pumping the admixed liquid and graniilax' abrasive by the force of the second jet, entraining the'admixed liquid and granular abrasive in the second jet, projecting the liquid carrying medium and entrained granular abrasive as a
  • the method of cleaning or cutting with an abrasivmaterial which comprises the steps of admixingliquid with a supply of granular abrasive, subjecting a.v liquid carrying medium to high pressure, projecting the liquid carrying medium as a high velocity jet, admixing air with the projected jet of liquid carrying medium, restricting and projecting the liquid carrying medium and admixed air as ⁇ a.
  • an abrading gun adapted to be utilized with a supply of liquid under high pressure so that said liquid provides a.l carrying and motivating medium for abrasive material
  • the combination comprising a body including three spaced and axially aligned nozzles and providing chambers at each end of the intermediate nozzle, a liquid input connection communicating with one of the end nozzles so that liquid is projected from each of the nozzles and through each of the chambers as a high velocity jet, an adjustable valve for admitting a controlled amount of air only to the chamber between the intermediate nozzle and said one oi the end nozzles for controlling the spread of the high a sand slurry into the chamber for entrainment in the said high velocity jet therein.
  • an abrading gun adapted to be utilized with a supply 0f liquid under high pressure so that said liquid provides a carrying and motivating medium for abrasive material.
  • the combination comprising a body including three spaced and axially aligned nozzles and providing chambers at each end of the-intermediate nozzlel a liquid input connection communicating with one of the end nozzles so that liquid'is projected from each oi the nozzles and through each of the chambers as a high velocity jet, two of said axially aligned nozzles having a larger opening therein than the preceding nozzle through which the liquid passes, an adjustable valve for admitting a controlled amount of air only to the chamber between the intermediate nozzle and said one of the end nozzles for controlling the spread of the high Velocity jet from the last nozzle from which the liquid is projected, and means communicating with the other of the chambers for introducing a sand slurry into the chamber for entrainment in the said high velocity jet therein.
  • the method of cleaning or cutting with an abrasive material which comprises the steps of admixing a liquid with a supply of granular abrasive, subjecting a liquid carrying medium to high pressure, prrjecting the liquid carrying medium as a high velocity jet, utilizing the force of the high velocity jet to pump the admixed liquid and granular abrasive, entrainirig the admixed liquid and granular abrasive in the high velocity liquid jet, and projecting the liquid carrying medium and entrained granular abrasive as a cleaning and cutting jet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Nozzles (AREA)
US127620A 1937-02-25 1937-02-25 Method and apparatus for sand blasting Expired - Lifetime US2200587A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US127620A US2200587A (en) 1937-02-25 1937-02-25 Method and apparatus for sand blasting
GB18808/37A GB498478A (en) 1937-02-25 1937-07-06 Sand blast device
NL47980A NL47980C (enrdf_load_stackoverflow) 1937-02-25 1937-07-21
FR832979D FR832979A (fr) 1937-02-25 1938-01-31 Appareil à jet de sable

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Application Number Priority Date Filing Date Title
US127620A US2200587A (en) 1937-02-25 1937-02-25 Method and apparatus for sand blasting

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US2200587A true US2200587A (en) 1940-05-14

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US127620A Expired - Lifetime US2200587A (en) 1937-02-25 1937-02-25 Method and apparatus for sand blasting

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US (1) US2200587A (enrdf_load_stackoverflow)
FR (1) FR832979A (enrdf_load_stackoverflow)
GB (1) GB498478A (enrdf_load_stackoverflow)
NL (1) NL47980C (enrdf_load_stackoverflow)

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US2667014A (en) * 1951-06-29 1954-01-26 Wiltie I Gladfelter Wet blasting apparatus
US2685293A (en) * 1948-12-31 1954-08-03 Standard Oil Dev Co Apparatus for cleaning tube bundles
US3150467A (en) * 1960-02-19 1964-09-29 Ajem Lab Inc Hydraulic surface treating process and equipment
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US3205620A (en) * 1963-02-12 1965-09-14 American Sterilizer Co Method and apparatus for cleaning hands and the like
US3212378A (en) * 1962-10-26 1965-10-19 Union Carbide Corp Process for cutting and working solid materials
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US3514905A (en) * 1967-07-03 1970-06-02 Mckenzie Pump Corp Hydraulic method and apparatus for dispensing granular material under pressure
US3646709A (en) * 1970-12-17 1972-03-07 Matthew P Nolan Wet sandblast gun
US3828478A (en) * 1973-06-25 1974-08-13 E Bemis Fluid-jet-abrasive device and system
US4193550A (en) * 1977-09-28 1980-03-18 Dura Corporation Chemical injection head
US4369607A (en) * 1980-06-18 1983-01-25 Cat Pumps Corporation Sand blasting apparatus
US4449332A (en) * 1979-07-31 1984-05-22 Griffiths Norman J Dispenser for a jet of liquid bearing particulate abrasive material
US5115600A (en) * 1989-05-30 1992-05-26 Fuji Seiki Machine Works, Ltd. Dressing method and apparatus for super abrasive grinding wheel
US5168671A (en) * 1989-05-30 1992-12-08 Fuji Seiki Machine Works, Ltd. Dressing method and apparatus for super abrasive grinding wheel
US5335459A (en) * 1991-07-27 1994-08-09 Dale Brian D Nozzle for abrasive cleaning or cutting
US5407379A (en) * 1994-04-18 1995-04-18 Church & Dwight Co., Inc. Differential pressure metering and dispensing system for abrasive media
WO1999039874A1 (de) * 1998-02-04 1999-08-12 Alfred Kärcher GmbH & Co. Strahlmittel-injektorpistole
US20020083981A1 (en) * 2000-11-10 2002-07-04 Thompson Robert E. Media control valve
EP1036633A3 (en) * 1999-03-18 2002-11-13 Shibuya Kogyo Co., Ltd Method for cleansing/scraping and apparatus therefor
NL1018280C2 (nl) * 2001-06-13 2002-12-16 Huibert Konings Straalelement voor het bewerken van oppervlakken met cryogene deeltjes.
US6622983B2 (en) 2000-08-25 2003-09-23 Lawrence Hall Particle control valve
US20060151634A1 (en) * 2003-03-25 2006-07-13 Alexander Pivovarov Cleaning of submerged surfaces by discharge of pressurized cavitating fluids
US20070111642A1 (en) * 2005-11-14 2007-05-17 Davis Ian M Apparatus and methods for slurry cleaning of etch chambers
CN108044519A (zh) * 2018-01-12 2018-05-18 安徽理工大学 一种基于淹没状体下湿式磨料筛选自动罐装前混合磨料水射流设备
US20220281073A1 (en) * 2021-03-08 2022-09-08 Aeroetch Holdings, Inc. Atmospheric pressure venturi intermix regulator cartridge and emission conduit
CN118437895A (zh) * 2024-07-11 2024-08-06 信承瑞技术有限公司 一种用于金属连铸坯的自清洁型冷却剂喷嘴

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CN108422326A (zh) * 2018-03-16 2018-08-21 陈志煌 一种高压加磨料型木材切割枪
PL236540B1 (pl) * 2019-02-04 2021-01-25 Land Reko Spolka Z Ograniczona Odpowiedzialnoscia Spolka Komandytowa Zawór ścierniwa, zwłaszcza piaskarki
CN113084716B (zh) * 2019-12-23 2022-11-08 张英 水砂旋转接头及喷砂枪

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US3212378A (en) * 1962-10-26 1965-10-19 Union Carbide Corp Process for cutting and working solid materials
US3205620A (en) * 1963-02-12 1965-09-14 American Sterilizer Co Method and apparatus for cleaning hands and the like
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US3427644A (en) * 1963-10-01 1969-02-11 Sylvania Electric Prod Process of forming a matrix structure
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US3514905A (en) * 1967-07-03 1970-06-02 Mckenzie Pump Corp Hydraulic method and apparatus for dispensing granular material under pressure
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US4193550A (en) * 1977-09-28 1980-03-18 Dura Corporation Chemical injection head
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US5168671A (en) * 1989-05-30 1992-12-08 Fuji Seiki Machine Works, Ltd. Dressing method and apparatus for super abrasive grinding wheel
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WO1999039874A1 (de) * 1998-02-04 1999-08-12 Alfred Kärcher GmbH & Co. Strahlmittel-injektorpistole
EP1036633A3 (en) * 1999-03-18 2002-11-13 Shibuya Kogyo Co., Ltd Method for cleansing/scraping and apparatus therefor
EP1422026A3 (en) * 1999-03-18 2004-06-02 Shibuya Kogyo Co., Ltd Method for cleaning/scraping and apparatus therefor
US6622983B2 (en) 2000-08-25 2003-09-23 Lawrence Hall Particle control valve
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NL1018280C2 (nl) * 2001-06-13 2002-12-16 Huibert Konings Straalelement voor het bewerken van oppervlakken met cryogene deeltjes.
WO2003002303A1 (en) * 2001-06-13 2003-01-09 Huibert Konings Nozzle for treatment of surfaces with cryogenic particles
US20060151634A1 (en) * 2003-03-25 2006-07-13 Alexander Pivovarov Cleaning of submerged surfaces by discharge of pressurized cavitating fluids
US7494073B2 (en) * 2003-03-25 2009-02-24 Alexander Pivovarov Cleaning of submerged surfaces by discharge of pressurized cavitating fluids
US20070111642A1 (en) * 2005-11-14 2007-05-17 Davis Ian M Apparatus and methods for slurry cleaning of etch chambers
EP1785230B1 (en) * 2005-11-14 2010-04-21 Applied Materials, Inc. Method for slurry cleaning of etch chambers
CN108044519A (zh) * 2018-01-12 2018-05-18 安徽理工大学 一种基于淹没状体下湿式磨料筛选自动罐装前混合磨料水射流设备
US20220281073A1 (en) * 2021-03-08 2022-09-08 Aeroetch Holdings, Inc. Atmospheric pressure venturi intermix regulator cartridge and emission conduit
CN118437895A (zh) * 2024-07-11 2024-08-06 信承瑞技术有限公司 一种用于金属连铸坯的自清洁型冷却剂喷嘴

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FR832979A (fr) 1938-10-07
GB498478A (en) 1939-01-06
NL47980C (enrdf_load_stackoverflow) 1939-10-16

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