US2667015A - Sand washing method and apparatus - Google Patents

Sand washing method and apparatus Download PDF

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Publication number
US2667015A
US2667015A US290906A US29090652A US2667015A US 2667015 A US2667015 A US 2667015A US 290906 A US290906 A US 290906A US 29090652 A US29090652 A US 29090652A US 2667015 A US2667015 A US 2667015A
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US
United States
Prior art keywords
sand
tank
water
stream
discharge
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
US290906A
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English (en)
Inventor
Ralph R Berg
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.)
MARIBLAST Corp
Original Assignee
MARIBLAST CORP
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
Priority to NL92868D priority Critical patent/NL92868C/xx
Application filed by MARIBLAST CORP filed Critical MARIBLAST CORP
Priority to US290906A priority patent/US2667015A/en
Priority to GB11288/53A priority patent/GB731117A/en
Priority to FR1080033D priority patent/FR1080033A/fr
Priority to DEM18782A priority patent/DE924075C/de
Application granted granted Critical
Publication of US2667015A publication Critical patent/US2667015A/en
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
    • B24C7/0007—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

Definitions

  • the present invention relates to a method and apparatus for cleaning the sides and hulls of ships and, more particularly, it relates to a sand washing method and apparatus whereby a mixture of fluidized sand and water is discharged against the sides and hulls of ships to remove sea growths and other loosely adhering deposits without effecting or removing paint from the ships.
  • water is fed under pressure through a tank containing sand.
  • the water in its passage through the tank carries the sand with it to a discharge nozzle from which the mixture is played against the sides of a ship.
  • a stream of high pressure air is passed to the top of a sealed tank containing water and sand.
  • the water and sand are forced out of the bottom of the tank by the air and led to and admixed with a further stream of rapidly moving air.
  • This final mixture of air, water and sand is then sprayed from a discharge nozzle against the side of a ship.
  • the sand will not be evenly and uniformly distributed throughout the abrading stream. With such uneven distribution, the stream will not have a constant cleaning efiect.
  • One advantage of the present invention is that packing and clotting of sand in the storage tank outlets, discharge passages, and discharge nozzle is eliminated.
  • a still further advantage of the present invention resides in the fact that the use of an abrading stream containing fluidized sand will prevent any slugging effect and will provide a smooth continuous discharge.
  • Another advantage of the present invention is the fact that the operator handling the discharge nozzle will not be easily tired due to the absence of pressure and shock waves, which would otherwise result if the system were to jam.
  • An additional advantage of the present in vention is the fact that the amount of sand in the stream may be varied within fairly large limits since the sand is in a fluid state and will not block the system despite its concentration.
  • the present invention has the advantage that the abrading stream will at all times deliver with a constant uniform cleaning efiect.
  • Fig. l is a side View in partial section showing the apparatus employed in the present invention.
  • Fig. 2 is a plan view of the apparatus shown in Fig. 1.
  • a stream of water is forced upwardly under pressure into the bottom of a tank having a perforated plate disposed therewithin.
  • the perforated plate is located just above the bottom of the tank and is adapted to hold a bed of sand.
  • the entire tank is closed to atmospheric pressure at all times during the operation of the system. As thef'water passes into the tank, it is uniformly distributed to the bed of sand by atmospheric pressure.
  • the upwardly rushing water expands the bed of sand and causes the sand particles to take on a continual motion.
  • the bed of sand thus acts as a fluid layer and exhibits flow characteristics typical of a fluid.
  • the water in the tank will be divided into two layers.
  • the bottom layer, shown as B in Fig. 1 will contain water and fluidized sand
  • the top layer, shown as A in Fig. 1 will contain clear water. Due to gravity, the fluidized sand will be found only in the lower portion of the tank.
  • the fluidized sand and water then pass through an outlet conduit extending from the perforated plate to a discharge line.
  • the clear water in the top layer will pass into an overflow line which joins the stream of fluidized sand and water going from the tank to the discharge line.
  • the final stream of water and sand is then led to a rubber hose having a discharge nozzle.
  • a tank H having a downwardly rounded bottom portion l2 and a downwardly rounded top portion 53.
  • This tank Ii sealed to the A plate i4 is disposed within and across the tank just above the bottom portion i2.
  • This plate M has a plurality of perforations 14a therein so that water may pass upwardly through the plate.
  • the open top of pipe i1 is higher in level than the inlet I5.
  • the conduit 48 is connected to a rubber hose l9 having a discharge nozzle 20.
  • an outlet pipe -2 l Connected to the side of the tank H and near the top thereof is an outlet pipe -2 l which extends down along the tank and then joins the conduit 18.
  • the amount of sand and water flowing in the discharge pipe l! and eventually joining the water from the outlet pipe 2! may be regulated through the valve Ha.
  • valve Ha By manipulation of valve Ha, the abrading strength of the discharge stream can be controlled. In other words, it is possibleto regulate the amount of abradant in the discharge stream.
  • a still further inlet pipe 22 through which a suitable corrosion inhibitor may be added to the sand and water mixture.
  • the top portion of the tank H has a plug 23 which may be removed so that sand may be placed in the tank.
  • the top portion [3 is downwardly rounded so that when sand is shoveled or thrown onto this portion, the sand will slide downwardly and through the opening 24.
  • the plug 23 is removed from the to portion 13 and sand is then shoveled through the hole 24.
  • This sand will fall down into the tank H and come to rest on the perforated plate I l.
  • the amount of sand placed in the tank should be slightly more than one-half of the volume between the top of the tank H and the plate it. It is true that some of the dry sand will pa s through the perforations Hid but this amount of Sand is negligible.
  • the apparatus is started up and water is in the tank ii, the sand which has fallen through the perforations [4a will be carried for the most part up into zone B.
  • the plug 23 is then replaced in the tank H so that the tank is sealed to atmospheric pressure.
  • A. stream of water at approximately p. s. i. g., is then passed through pipe 16 to the bottom portion of the tank l l and then upwardly into the bed of sand.
  • the water which is uniformly distributed to the sand by means of the perforated plate it, expands the bed of sand 15 to 20 percent and causes the bed of sand to become fluid, asshown at zone B.
  • the fluid sand and water in zone B will then escape downwardly through pipe I! to the conduit l8 and finally out through the rubber hose l9 and discharge nozzle 26.
  • the clear water in zone A will pass out through the over-flow pipe 21 and then join the fluidized sand and water coming from pipe H.
  • a corrosion inhibiting liquid such as a dilute phosphoric acid solution or a dilute chromate salt solution may be admitted to the tank through pipe 22.
  • the corrosion inhibiting liquid may be applied to the bed of sand before the water is admitted to the tank or it may be supplied continuously to the tank during operation.
  • Apparatus for feeding a fluid abrading mixture to a discharge conduit comprising a tank having a rounded bottom portion, a perforated plate within said tank and disposed above said bottom portion, said plate adapted to hold an abrasive thereon, said tank being closed to atmospheric pressure, an inlet in said bottom portion for admitting a fluid under pressure, an outlet pipe extending from said plate through said bottom portion to a discharge conduit, an over-flow pipe disposed above said plate and joining said discharge conduit.
  • Apparatus for feeding a fluid mixture of said to a discharge conduit comprising a tank having a perforated plate disposed above its bottom portion and being closed to atmospheric pressure, said plate adapted to support a bed of sand, an inlet in the bottom of said tank whereby a fluid may be admitted to said tank under pressure, an outlet pipe extending from said plate through the bottom of said tank to a discharge conduit, an overflow pipe disposed above said plate and joining said discharge conduit.
  • a tank having a perforated plate disposed therewithin and above its bottom portion, said tank being closed to the atmosphere, said plate adapted to support a bed of sand, an inlet conduit for admitting fluid under pressure to the bottom of said tank at a point below the plate, an outlet pipe above said conduit, and an overflow pipe disposed above said plate, said outlet and overflow pipes both leading to a common discharge conduit.
  • a tank adapted to receive sand and fluid, a plate disposed within said tank and having a plurality of perforations therein, said plate adapted to support a bed of sand thereon, an inlet pipe at the bottom of said tank and adapted to carry a stream of high pressure fluid up through said bed of sand, an outlet pipe within said tank extending from said plate down through the bottom of said tank and joining a discharge conduit, and an overflow pipe sure fluid, a perforated element dividing said tank into an inlet chamber and a sand retaining chamber disposed one above the other and within the latter of which a bed of sand is adapted to be supported by said perforated element, an inlet pipe leading to said inlet chamber and adapted to carry a stream of pressure fluid into said inlet chamber, from which it is directed upwardly through said perforated element into said bed of sand whereby said sand is fluidized, an outlet pipe leading from the lower
  • a tank adapted to receive a bed of sand in the lower portion of said tank, pressure fluid delivery the vicinity of the lower portion a discharge conduit communicating with said and joining said discharge conduit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US290906A 1952-05-31 1952-05-31 Sand washing method and apparatus Expired - Lifetime US2667015A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL92868D NL92868C (enrdf_load_stackoverflow) 1952-05-31
US290906A US2667015A (en) 1952-05-31 1952-05-31 Sand washing method and apparatus
GB11288/53A GB731117A (en) 1952-05-31 1953-04-23 Method and apparatus for feeding a fluid abrading material
FR1080033D FR1080033A (fr) 1952-05-31 1953-05-05 Procédé et appareil pour nettoyer les flancs et les coques de navires
DEM18782A DE924075C (de) 1952-05-31 1953-05-30 Sandstrahl-Verfahren und -Vorrichtung zur Oberflaechenbehandlung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US290906A US2667015A (en) 1952-05-31 1952-05-31 Sand washing method and apparatus

Publications (1)

Publication Number Publication Date
US2667015A true US2667015A (en) 1954-01-26

Family

ID=23117992

Family Applications (1)

Application Number Title Priority Date Filing Date
US290906A Expired - Lifetime US2667015A (en) 1952-05-31 1952-05-31 Sand washing method and apparatus

Country Status (5)

Country Link
US (1) US2667015A (enrdf_load_stackoverflow)
DE (1) DE924075C (enrdf_load_stackoverflow)
FR (1) FR1080033A (enrdf_load_stackoverflow)
GB (1) GB731117A (enrdf_load_stackoverflow)
NL (1) NL92868C (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742738A (en) * 1953-02-24 1956-04-24 George L Hall Wet abrasive dispenser
US2777256A (en) * 1954-12-20 1957-01-15 Cline Electric Mfg Co Apparatus for graining surfaces
US2797530A (en) * 1954-08-17 1957-07-02 Pangborn Corp Sluriator
US2875521A (en) * 1954-09-16 1959-03-03 Paul J Tascher Abrasive flux and flush control system for dental apparatus
US2910812A (en) * 1956-01-13 1959-11-03 Western Electric Co Methods of and apparatus for grit blasting
US2953875A (en) * 1957-12-03 1960-09-27 William H Mead Dry honing device
US3073070A (en) * 1960-10-12 1963-01-15 William H Mead Abrasive blasting system
US3343304A (en) * 1965-03-12 1967-09-26 Arthur H Eppler Apparatus for wet abrasive blasting
DE9408944U1 (de) * 1994-06-01 1994-09-08 OLREN Instrumente Erich Leibinger, 78603 Renquishausen Sandaufwirbelungsvorrichtung für Sandstrahlgeräte
US6435950B1 (en) * 2000-03-21 2002-08-20 Hewlett-Packard Company Pressurized delivery method for abrasive particulate material
WO2002085573A1 (en) * 2001-04-21 2002-10-31 Jetsis International Pte Ltd Abrasive fluid jet system
CN103084984A (zh) * 2011-11-01 2013-05-08 上海科秉电子科技有限公司 一种用于沟槽刻蚀设备零件的清洗方法
CN103447971A (zh) * 2013-09-12 2013-12-18 厦门四缘环保技术有限公司 一种喷砂机
US11590631B2 (en) 2019-08-14 2023-02-28 Clean Blast Systems, LLC Wet abrasive blast machine with remote control rinse cycle

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086684A (en) * 1964-07-02 1967-10-11 Abrasive Dev Improvements in or relating to the treatment of mould surfaces
DE1531571B1 (de) * 1967-12-29 1971-04-29 Hammelmann Paul Maschf Druckwasserbetriebene Reinigungsvorrichtung fuer Unterwasserarbeiten
DE2934023A1 (de) * 1979-08-22 1981-03-12 Myers-Europe Pumpen GmbH, 4300 Essen Nasssandstrahl-verfahren und einrichtung zum durchfuehren des verfahrens
GB2075879B (en) * 1980-05-16 1983-04-07 Link John Cleaning apparatus and method
DE3239429A1 (de) * 1982-10-25 1984-04-26 Keizers, geb. Kalle, Sigrid, 4280 Borken Verfahren und vorrichtung zum betreiben eines hochdruckstrahlers
SE8301624D0 (sv) * 1983-03-24 1983-03-24 Carl Goran Christer Mosell Sett vid rengoringsmaskin
GB2170128B (en) * 1985-01-16 1988-11-16 Fluid Eng Prod Apparatus for generating an abrasive fluid jet
GB2196279B (en) * 1986-10-17 1990-08-01 Rhoderick Jonathan Spenc Baker Pressurized blasting machine
US5195280A (en) * 1987-04-09 1993-03-23 Gagemarch Limited Abrasive blasting apparatus
DE3722258A1 (de) * 1987-07-06 1989-01-19 Pro Aqua Geraete Gmbh Vorrichtung zum herstellen eines unter hochdruck stehenden granulat/fluid-gemisches
KR920703272A (ko) * 1989-08-07 1992-12-17 인시튜폼 그룹 리미티드 절삭장치에 관한 개선
US5283991A (en) * 1992-09-08 1994-02-08 Josef Keizers Sandblasting method and a moist-sand blasting apparatus
DE19705401A1 (de) * 1997-02-13 1998-08-20 Kaesch Optiblast System Gmbh Verfahren und Vorrichtung zum Einschlämmen von feuchtem Strahlmittel in einen Strahlkessel
IT201600097457A1 (it) * 2016-09-28 2018-03-28 Eurowaterjet S R L Apparato per il taglio a getto d’acqua

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US554299A (en) * 1896-02-11 parker
US1054775A (en) * 1912-04-30 1913-03-04 Thomas W Pangborn Company Sand-blast apparatus.
US2042120A (en) * 1934-10-01 1936-05-26 Palmiter Frank Sandblast device
US2317837A (en) * 1941-07-25 1943-04-27 Hydro Blast Corp Method and means for treating ferrous objects
US2372957A (en) * 1943-12-23 1945-04-03 Pangborn Corp Hydraulic sand feeder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US554299A (en) * 1896-02-11 parker
US1054775A (en) * 1912-04-30 1913-03-04 Thomas W Pangborn Company Sand-blast apparatus.
US2042120A (en) * 1934-10-01 1936-05-26 Palmiter Frank Sandblast device
US2317837A (en) * 1941-07-25 1943-04-27 Hydro Blast Corp Method and means for treating ferrous objects
US2372957A (en) * 1943-12-23 1945-04-03 Pangborn Corp Hydraulic sand feeder

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742738A (en) * 1953-02-24 1956-04-24 George L Hall Wet abrasive dispenser
US2797530A (en) * 1954-08-17 1957-07-02 Pangborn Corp Sluriator
US2875521A (en) * 1954-09-16 1959-03-03 Paul J Tascher Abrasive flux and flush control system for dental apparatus
US2777256A (en) * 1954-12-20 1957-01-15 Cline Electric Mfg Co Apparatus for graining surfaces
US2910812A (en) * 1956-01-13 1959-11-03 Western Electric Co Methods of and apparatus for grit blasting
US2953875A (en) * 1957-12-03 1960-09-27 William H Mead Dry honing device
US3073070A (en) * 1960-10-12 1963-01-15 William H Mead Abrasive blasting system
US3447272A (en) * 1965-03-12 1969-06-03 Arthur H Eppler Method for wet abrasive blasting
US3343304A (en) * 1965-03-12 1967-09-26 Arthur H Eppler Apparatus for wet abrasive blasting
DE9408944U1 (de) * 1994-06-01 1994-09-08 OLREN Instrumente Erich Leibinger, 78603 Renquishausen Sandaufwirbelungsvorrichtung für Sandstrahlgeräte
US6435950B1 (en) * 2000-03-21 2002-08-20 Hewlett-Packard Company Pressurized delivery method for abrasive particulate material
WO2002085573A1 (en) * 2001-04-21 2002-10-31 Jetsis International Pte Ltd Abrasive fluid jet system
SG101445A1 (en) * 2001-04-21 2004-01-30 Jetsis Int Pte Ltd Abrasive fluid jet system
US20040198179A1 (en) * 2001-04-21 2004-10-07 Gadd William Michael Abrasive fluid jet system
CN103084984A (zh) * 2011-11-01 2013-05-08 上海科秉电子科技有限公司 一种用于沟槽刻蚀设备零件的清洗方法
CN103084984B (zh) * 2011-11-01 2015-07-08 上海科秉电子科技有限公司 一种用于沟槽刻蚀设备零件的清洗方法
CN103447971A (zh) * 2013-09-12 2013-12-18 厦门四缘环保技术有限公司 一种喷砂机
US11590631B2 (en) 2019-08-14 2023-02-28 Clean Blast Systems, LLC Wet abrasive blast machine with remote control rinse cycle

Also Published As

Publication number Publication date
GB731117A (en) 1955-06-01
FR1080033A (fr) 1954-12-06
DE924075C (de) 1955-02-24
NL92868C (enrdf_load_stackoverflow)

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