US2991203A - Method and apparatus for cleaning the interior of a tank - Google Patents

Method and apparatus for cleaning the interior of a tank Download PDF

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Publication number
US2991203A
US2991203A US770168A US77016858A US2991203A US 2991203 A US2991203 A US 2991203A US 770168 A US770168 A US 770168A US 77016858 A US77016858 A US 77016858A US 2991203 A US2991203 A US 2991203A
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United States
Prior art keywords
nozzles
tank
liquid
walls
vertical axis
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Expired - Lifetime
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US770168A
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English (en)
Inventor
Cornelis In T Veld
Johannes In T Veld
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B57/00—Tank or cargo hold cleaning specially adapted for vessels
    • B63B57/02—Tank or cargo hold cleaning specially adapted for vessels by washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0417—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0444—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet comprising a liquid driven rotor, e.g. a turbine the movement of the outlet elements being a combination of two movements, one being rotational
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/14—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation
    • B05B3/16—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation driven or controlled by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets

Definitions

  • the invention -concerns a method and an apparatus for cleaning the interior of a tank of, for instance, a tanker, a shore installation or the like, according to which a cleaning liquid is ejected from nozzles which are rotatable about a horizontal transverse axis, said nozzles forming part of an apparatus which itself is rotatable about a vertical axis.
  • a cleaning liquid is ejected from nozzles which are rotatable about a horizontal transverse axis, said nozzles forming part of an apparatus which itself is rotatable about a vertical axis.
  • a similar method and apparatus are known from the Dutch patent specification No. 32,888, according to which two nozzles rotating in parallel vertical planes about a horizontal axis perform at the same time a movement about a vertical axis of rotation. In this treatment the cleaning liquid is delivered inv equal quantities towards the top and the bottom.
  • the invention has for its object to furnish a method and apparatus by means of Vwhich it is possible to carry out the cleaning of a tank in a way which is more eiiicient and also involves a saving of liquid.
  • this object is achieved by the fact that for the duration of one cycle of treatment the nozzles, performing a given number of revolutions about the vertical axis, are simultaneously adjusted only once'from the top to the bottom. Whilst therefore according to the known methods the jets act upon the Walls of the tank accordingto curved lines extending side by side from the top to the bottom, in accordance with the invention the action upon the walls takes place according to a spiral line on the top and bottom surfaces and according to helical lines on the side-walls of the tank. According to the invention it is possible to control the nozzles in such a way during their adjustment about the horizontal axis that the action of the jets is shorter on those surfaces which are less dirty and longer on those which are dirtier.
  • the adjustment of the nozzles about the horizontal axis may therefore take place withvarying speed, a slower adjustment in particular taking place in those ranges of much cleaning liquid is sprayed in all other less dirty places.
  • This excessive use of cleaning liquid can be avoided by the method according to the invention because in consequence of a ready adjustment of the nozzles the jets can move quickly over the less dirty surfaces and according to the inventionthe adjustment in the corners takes place more slowly, In fact, in these corners greater demands are made on the cleaning in connection with the Irelative increase of the area to be cleaned and the presence of additional surfaces, connected with the construction of the tank.
  • the apparatus for carrying out the method according to the invention may be formed by a casing adapted to rotate about a -vertical axis relative to its suspension through which casing the cleaning liquid is fed, while on the outside it is iitted with one or more nozzles'rotatable about a horizontal transverse axis, which nozzles are connected with means for adjusting these nozzles.
  • a casing adapted to rotate about a -vertical axis relative to its suspension through which casing the cleaning liquid is fed, while on the outside it is iitted with one or more nozzles'rotatable about a horizontal transverse axis, which nozzles are connected with means for adjusting these nozzles.
  • nozzles In order to obtain different quantities of liquid for the treatment of the upper and the lower part of a tank respectively, according to the invention near each horizontal transverse axis two nozzles connected with each other and with the operating means may be provided, which nozzles include an angle of about with each other and can be adjusted over a corresponding
  • each nozzle or each set of nozzles may be connected with a vertically adjustable body engaging the helical threads of a member-driven so as to rotate about a vertical axis, the helical threads of said member, which bring about the downwardr vadjustment of the nozzles, having a variable pitch, while further a return thread with a considerably greater pitch running in the opposite direction is present.
  • the helical threads of dilferent pitch cause the nozzles in given ranges to be adjusted more slowly than in other ranges, while at the end of thecycle an accelerated return to a new starting position takes place.
  • the nozzles can move more quickly over the upper side and lower surfaces of the tank and act for a longer time upon the angular ranges of the tank.
  • a turbine driven by the flow of the liquid,l which turbine drives, via a reduction gear, the casing rotating about the vertical axis and also, via a second reduction gear, the member provided with helical threads.
  • This type of drive provides for the rotation about 'the vertical axis of rotation and for the slow adjustmentof the nozzles about the horizontal axis as well as the readjustment to the new starting position, upon which the cycle may be repeated again, if necessary.
  • -FIGURE 1 is a vertical cross-section of the apparatus according to the invention.
  • FIGURE 2 is a horizontal cross-section along the line -II-II in FIGURE 1.
  • FIGURE 3 is a horizontal cross-section along the line III- III in FIGURE l.
  • FIGURE 4 is a cross-section of a part of FIGURE 3 along the line IVIV.
  • FIGURE 5 is a vertical section on a smaller scale of a tank and cleaning apparatus embodying the invention.
  • the apparatus shown inthe drawings consists. of a protective protective cap and handle 1, a casing 2, which is provided with a connection (not shown) for feeding cleaning liquid to the interior 3 of said casing.
  • a connection (not shown) for feeding cleaning liquid to the interior 3 of said casing.
  • the casing 5 of the apparatus is rotatably suspended.
  • this casing 5 is constructed to have rubber-lined laterally extending lugs 6, near which a sleeve 7 is rotatably supported, from which sleeve extend two nozzles 8 and 9 respectively, which nozzles practically include an angle of 90 with each other, but are placed the former at a small angle inwards towards the vertical and the latter at a small angle upwards towards the horizontal. This is necessary in order to prevent certain sur.l faces not being sprayed and to obtain overlapping.
  • the casing 5 is closed at the bottom by a cover 10, on which are fixed columns 11 directed vertically upwards. These columns 11 serve as guides for blocks 12 movable along them, which blocks are fitted with stub axles 13, arms 14 extending into bushings 15 of the sleeve 7, rotatable about a horizontal transverse axis, being supported on said stub axles.
  • the blocks 12 are moved upwards along the columns 11, the rods 14 will move in the bushings 15, with the simultaneous rotation of the sleeve 7 and consequently of the nozzles 8 and 9.
  • the blocks 12 are fitted with a member 16 meshing with a helical thread of a member 17 rotatable afbout a vertical axis.
  • the helical threads of this member 17 have a variable pitch, in the sense that the pitch is greater at the lower and the upper ends where the nozzles are in registration with the at wall surfaces than in the central section where the nozzles are in registration with the more remote corner sections of the tank.
  • the return thread 17b is of greater pitch than the thread 17a so that the nozzles are returned at a more rapid rate for repeating the cycle.
  • Both the casing 5 and the member 17 tted with threads are power-driven, for which purpose in the upper part of the casing 2 a turbine 18 is mounted, which drives a shaft 19 supported in the innermost .part of the casing.
  • This shaft 19 carries a worm screw 20, also shown in FIGURE 2, and this worm screw drives a worm wheel 21 of a shaft 22, on which a second worm 23 is mounted.
  • This worm 23 meshes with a worm wheel 24 of a shaft 25, at the upper end of which is located a gear wheel 26 meshing with an internal gear 27 of the casing 5.
  • the casing S is driven with great reduction, so that it rotates about the vertical axis and thus also im parts a similar rotation to the nozzles.
  • a second gear wheel 28 also meshing with an internal gear 29, which is connected with the member 17 tted with helical threads, by which means the latter is driven. This drive results in the upward movement of the blocks 12 and accordingly ⁇ in the rotation of the nozzles.
  • FIG. 5 The apparatus above described is shown in FIG. 5 as positioned for cleaning a tank having a top wall 30 provided with an opening 31 through which the apparatus is inserted and having side walls 32 and a bottom wall 33. 'Ihe nozzles are so disposed that one set of nozzles cleans the top wall 30 and the upper portion of the side wall 32, while the other set of nozzles cleans the lower portion of the side wall 32 and the bottom wall 33.
  • the method of cleaning deposits from the interior walls of a tank or the like having top, bottom and side walls which comprises spraying onto the interior surfaces of said walls a cleaning liquid from a plurality of nozzles within said tank, said nozzles extending normal to a horizontal axis and being spaced laterally from a given vertical axis while rotating said set of nozzles about said vertical axis at a uniform rate and simultaneously oscillating said nozzles about said horizontal axis in such an arc that liquid from certain of said nozzles impinges on the top and upper side walls of said tank and liquid from others of said nozzles impinges on the bottom and lower side walls of said tank and discharging a larger quantity of said liquid from the last mentioned nozzles than from the iirst mentioned nozzles to compensate for the greater quantity of deposit to be removed from the lower portion of said walls.
  • Apparatus for cleaning deposits from the interior surfaces of a tank or the like having top, bottom and side walls comprising a casing -to be disposed within said tank and mounted to rotate about a vertical axis, a plurality of sets of nozzles mounted on said casing to be oscillated about horizontal axes, said nozzles extending normal to said horizontal axes and being displaced from said vertical axis, means for oscillating certain nozzles of each set in an arc adapted to cause the liquid therefrom to contact the top and upper side walls only of said tank and means for oscillating other nozzles of each set in an arc adapted to cause the liquid therefrom to contact the bottom and lower side walls only of said tank, and means simultaneously rotating said casing about said ver. tical axis for thereby causing said liquid to contact said walls around the entire periphery of said tank.
  • said means for oscillating said nozzles includes 4means to -feed said nozzles downwardly at a predetermined rate and means for returning said nozzles upwardly at a predetermined faster rate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
US770168A 1957-10-31 1958-10-28 Method and apparatus for cleaning the interior of a tank Expired - Lifetime US2991203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL867384X 1957-10-31

Publications (1)

Publication Number Publication Date
US2991203A true US2991203A (en) 1961-07-04

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US770168A Expired - Lifetime US2991203A (en) 1957-10-31 1958-10-28 Method and apparatus for cleaning the interior of a tank

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US (1) US2991203A (en))
DE (1) DE1156625B (en))
GB (1) GB867384A (en))
NL (1) NL96409C (en))

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379379A (en) * 1966-06-28 1968-04-23 Butterworth System Inc Tank washing apparatus having oscillating nozzles
US3472451A (en) * 1968-01-19 1969-10-14 Butterworth System Inc Tank washing apparatus
EP0048091A3 (en) * 1980-09-12 1982-06-16 Butterworth Systems Inc. Sludge removal machine
US4343656A (en) * 1979-04-24 1982-08-10 Tuchenhagen Otto A P Process for monitoring tank inside cleaners driven by cleansers
US5445173A (en) * 1994-07-18 1995-08-29 Matrix Service, Inc. System for stirring and thereby reducing build up of bottom sediments in a storage tank
US20100326482A1 (en) * 2009-06-30 2010-12-30 Bo Boye Busk Jensen Tank cleaning apparatus
CN118813375A (zh) * 2024-09-18 2024-10-22 诸城兴贸玉米开发有限公司 一种玉米发酵罐自动清洁装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272682B (de) * 1964-02-18 1968-07-11 H Oskar Sprenger Verfahren und Vorrichtung zum Korrosionsschutz der von der Tankfluessigkeit unbenetzt bleibenden Tankwaende, insbesondere im Bereich des Tankscheitels bei Heizoeltanks
US3595256A (en) * 1968-11-22 1971-07-27 Ethyl Corp Vessel-cleaning apparatus
GB1603555A (en) * 1978-04-18 1981-11-25 Brillo Mfg Gb Epicyclic nozzle drive
SE534034C2 (sv) 2009-06-08 2011-04-05 Scanjet Marine Ab Anordning för rengöring av slutna utrymmen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US479105A (en) * 1892-07-19 Apparatus for irrigating and sprinkling land
US1307634A (en) * 1919-06-24 Lawn-sprinkler
US1806740A (en) * 1931-05-26 A cobfoba
US2177219A (en) * 1937-08-20 1939-10-24 Joseph D Lewis Dishwashing and sterilizing machine
US2714080A (en) * 1952-12-31 1955-07-26 Pyrate Sales Inc Tank cleaning device and method
US2800366A (en) * 1955-12-20 1957-07-23 Shell Dev Tank spraying apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB516366A (en) * 1938-06-22 1940-01-01 Clare Cornelius Richard Method and apparatus for washing tanks
US2785008A (en) * 1955-11-18 1957-03-12 Arthur R Young Tank-cleaning device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US479105A (en) * 1892-07-19 Apparatus for irrigating and sprinkling land
US1307634A (en) * 1919-06-24 Lawn-sprinkler
US1806740A (en) * 1931-05-26 A cobfoba
US2177219A (en) * 1937-08-20 1939-10-24 Joseph D Lewis Dishwashing and sterilizing machine
US2714080A (en) * 1952-12-31 1955-07-26 Pyrate Sales Inc Tank cleaning device and method
US2800366A (en) * 1955-12-20 1957-07-23 Shell Dev Tank spraying apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379379A (en) * 1966-06-28 1968-04-23 Butterworth System Inc Tank washing apparatus having oscillating nozzles
US3472451A (en) * 1968-01-19 1969-10-14 Butterworth System Inc Tank washing apparatus
US4343656A (en) * 1979-04-24 1982-08-10 Tuchenhagen Otto A P Process for monitoring tank inside cleaners driven by cleansers
EP0048091A3 (en) * 1980-09-12 1982-06-16 Butterworth Systems Inc. Sludge removal machine
US4407678A (en) * 1980-09-12 1983-10-04 Butterworth Systems Inc. Sludge removal machine
US4685974A (en) * 1980-09-12 1987-08-11 Butterworth Systems, Inc. Method for clearing settled sludge
US5445173A (en) * 1994-07-18 1995-08-29 Matrix Service, Inc. System for stirring and thereby reducing build up of bottom sediments in a storage tank
EP0697252A1 (en) 1994-07-18 1996-02-21 Matrix Service, Inc. A system for stirring and thereby reducing build up of bottom sediments in a storage tank
US20100326482A1 (en) * 2009-06-30 2010-12-30 Bo Boye Busk Jensen Tank cleaning apparatus
US8137481B2 (en) * 2009-06-30 2012-03-20 Alfa Laval Corporate Ab Tank cleaning apparatus
CN118813375A (zh) * 2024-09-18 2024-10-22 诸城兴贸玉米开发有限公司 一种玉米发酵罐自动清洁装置

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Publication number Publication date
NL96409C (en))
GB867384A (en) 1961-05-10
DE1156625B (de) 1963-10-31

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