US3691689A - Abrasive surface cleaning apparatus - Google Patents

Abrasive surface cleaning apparatus Download PDF

Info

Publication number
US3691689A
US3691689A US112543A US3691689DA US3691689A US 3691689 A US3691689 A US 3691689A US 112543 A US112543 A US 112543A US 3691689D A US3691689D A US 3691689DA US 3691689 A US3691689 A US 3691689A
Authority
US
United States
Prior art keywords
abrasive
belt
enclosure
bucket
spent
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
US112543A
Other languages
English (en)
Inventor
James R Goff
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3691689A publication Critical patent/US3691689A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B24C3/065—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable with suction means for the abrasive and the waste material
    • B24C3/067—Self-contained units for floorings

Definitions

  • ABSTRACT A novel, mobile, continuously operable abrasive surface cleaning apparatus utilizing a rotating brush for abrasive recovery is disclosed, Also, a novel continuous belt elevator or conveyor for recirculating the recovered abrasive is disclosed.
  • This invention is directed to a mobile, continuously operable surface treating apparatus in which particulate abrasive material is projected at high velocity against a surface to be treated in order to remove rust, dirt, paint or other deposits therefrom.
  • the apparatus of this invention is a mobile, continuously operable surface treating apparatus provided with an improved means for recovering the particulate abrasive material from the surface for reuse.
  • the surface treating apparatus of this invention utilizes a rotating brush as the recovery means for the particulate abrasive material.
  • the rotating brush is used in conjunction with a novel elevator means to provide for highly efficient, continuously operable surface treating apparatus.
  • the apparatus of this invention is economical to manufacture and simply constructed, yet sturdy and durable upon extended use.
  • the apparatus of this invention operates with relative freedom from wear and other mechanical difficulties due to the unique recovery means utilized, particularly when used in conjunction with the unique elevator means for the recirculation of the spent particulate abrasive material.
  • the apparatus of this invention operates with almost total elimination of the passage of grit and dust to the atmosphere, and thus provides a highly acceptable reduction in pollution normally attendant the use of many conventional surface treating apparatus.
  • this invention provides a mobile, continuously operable surface treating apparatus useful for treating relatively flat horizontal surfaces comprising in combination: an enclosure with an open side adapted to contact the surface to be treated, projecting means within the enclosure for directing a stream of abrasive particles through the open side of the enclosure onto the surface to be treated, resilient sealing means around the boundary of the open side of the enclosure to restrain the spent abrasive, rotating brush means located behind the enclosure with open side to recover the spent abrasive collected within the enclosure and passing under the resilient seal upon movement of the apparatus over the surface being treated and recirculation means to return the spent, recovered abrasive material to the projecting means.
  • the mobile, continuously operable surface cleaning apparatus of this invention can be self-propelled or propelled by another vehicle or means such as a tractor or truck.
  • it is self-propelled, either by an electric motor or gasoline engine of suitable size.
  • the mobile, continuously operable apparatus of this invention is generally easily adaptable to numerous uses and is thus broadly practical and salable.
  • the apparatus may be adapted for use in the surface treatment of petroleum storage tank tops and bottoms, ship decks, concrete surfaces such as airport runways and highways, steel plate prior to painting or other treatment, etc.
  • the surfaces to be treated should generally be relatively flat and horizontal.
  • FIG. 1 represents a side view of a self-propelled surface cleaning apparatus of this invention
  • FIG. II represents a frontal view of a self-propelled surface cleaning apparatus of this invention.
  • FIG. Ill represents a bottom view of a seal means and rotating brush useful in the apparatus of FIGS. l and II.
  • FIG. IV represents a partially-sectioned elevation of a portion of the continuous belt elevator means with attached bucket means used in the apparatus. of FIGS. I and II.
  • the apparatus represented in FIGS. 1 and II is a selfpropelled surface cleaning apparatus of this invention. More particularly, in FIGS. I and II seal 1 surrounds the open side of the enclosure 2 adapted to contact the surface being treated.
  • the seal is sufi'iciently resilient to pass over obstructions present on the surface and to allow the spent abrasive material to pass under the edge thereof when the apparatus moves across the surface being treated.
  • the seal is preferably constructed of an abrasion-resistant polyurethane elastomer having a Durometer value of about A to A.
  • the seal may be constructed of any suitable material or synthetic resin having sufficient resilience or flexibility to allow the abrasive to pass thereunder as the apparatus moves across the surface being treated.
  • exemplary resilient elastomeric materials are natural rubbers, synthetic rubbers such as those prepared from butadiene or butadiene and styrene, and other known resilient resins.
  • the enclosure 2 is constructed so that the open side thereof in combination with the seal 1 contacts the surface being treated in such a manner as to prevent the escape of spent abrasive and grit or powder to the atmosphere except for the passage of the spent abrasive under the seal.
  • An auxiliary rubber seal 7 prevents passage of air orabrasive between the enclosure 2 and the main seal 1.
  • enclosure is normally metal such as steel or aluminum and also advantageously has an abrasive resistant lining on the inside portions thereof coming in contact with rebounding abrasive material.
  • exemplary abrasion-resistant lining materials are high strength polyolefins.
  • the projecting means 3 is represented as a centrifugal wheel driven by a high speed electric motor 4. Normally the centrifugal wheel operates at about 1,000 to 4,000 rpm. Other projecting means such as those utilizing compressed gas streams rather than centrifugal force might also be used; however, the centrifugal wheel is more efficient and thus preferred.
  • the centrifugal wheel is a conventional, commercially-available device such as a Wheelabrator type wheel. Normally controlled gravity fed abrasive is funneled into the center of a rapidly rotating wheel. The abrasive is then propelled by centrifugal force along the blades of the wheel until it leaves the wheel in a controlled stream at a predesignated opening in a housing surrounding the wheel.
  • the abrasive is directed to the surface being treated at a slight angle from the perpendicular.
  • a slight angle from the perpendicular In FIGS. l and II, for instance, an angle of about 3 to 7 from the perpendicular is shown. The impacting of the abrasive at a slight angle from the perpendicular improves the cleaning and assists recovery of the abrasive as some of the rebounding abrasive passes directly through passage 5 to the collection bin.
  • the rotating brush is operated within the range 'of about 200 to 600 rpm, preferably about 350 to 450 rpm.
  • the rotating brush is cylindrical in shape and normally has dimensions of about 30 to 75 inches in width and 10 to 25 inches in diameter.
  • the bristles may be of any strong friction resistant materials such as nylon, polyolefins as polypropylene, steel or even natural bristle fibers.
  • Particularly useful rotating brushes available commercially are the Radax and Paralax brushes available from the Wayne Manufacturing Company.
  • the particular novel elevator means 10 comprises an outer housing 11 surrounding a continuous belt 12.
  • the continuous belt has attached thereto at intervals; scoop or bucket means 13, described in more detail hereinafter with reference to FIG. IV.
  • the continuous belt is mounted on four pulleys 14, one of which 14', is the drive pulley.
  • An electric motor 15 and pulley and belt system 16 are shown as the means used to drive pulley 14.
  • a particular scoop or bucket means 13 is empty on the vertical downpath of the continuous loop. As it passes horizontally through the collection bin 6, the scoop itself is in a vertical collecting position.
  • the scoop or bucket is full of abrasive material.
  • the scoop or bucket Upon reaching the top of the vertical uppath the scoop or bucket passes horizontally across the top, itself in a vertical dumping position.
  • the abrasive material is dumped into a hopper 17 for collection and controlled return to the projecting means, e.g. a centrifugal wheels.
  • the scoop or bucket means are so constructed that normally more than percent of the abrasive falls into the hopper.
  • the novel elevator means of this invention is thus provided with a lower horizontal pick up flight in which the bucket means are below the belt, an elevator flight, an upper horizontal delivery flight in which the bucket means are above the belt and a descending return flight.
  • the scoops or buckets do not contact the inner surface of the housing 11 nor do they contact the bottom of the collection bin 6 when passing therethrough.
  • the elevator means is therefore substantially free of friction-caused wear during operation.
  • the continuous belt is normally a V-belt made of sturdy, flexible material such as synthetic resins or natural rubber.
  • a chain and sprocket (4 sprockets replacing the 4 pulleys) might be used in place of the V-belt.
  • any other suitable elevator means might be used.
  • the use of the novel endless belt elevator improves efiiciency, reduces operating costs and eliminates the need for auger feed devices to provide horizontal movement of the abrasive material.
  • the hopper 17 is of sufficient size to contain the total abrasive material used during operation. Normally a hopper containing about I to 4 cubic feet is sufficient. The size of the hopper in FIGS. land II is about 2 cubic feet, sufficient to hold about 600 pounds of abrasive steel shot. Other abrasive materials such as glass beads, aluminum oxide particles, silica, etc., may be useful but steel shot is preferred.
  • the hopper 17 is directly connected through passage 18, valve 19 and funnel-shaped passage 20 to the centrifugal wheel 3.
  • the valve 19 may be opened and set to provide a continuous flow of abrasive from the hopper to the centrifugal wheel.
  • the rate of flow is determined by numerous factors such as the type of surface being treated and the desired effect thereon.
  • a normal rate of flow is, however, generally between 300 and 600 pounds per minute.
  • the abrasive cleaning apparatus of this invention is essentially a closed system allowing very little grit or powder to reach the atmosphere. Normally a vent 21 or vents are present for grit and dust collection. The vent or vents forma passage or passages to a dust collection system such as a fan and dust bag collector.
  • the enclosed or closed system thus is normally operated under a vacuum created by the fan or other collection means. The vacuum is sufficient to remove selectively the grit and dust particles formed during the operation as these are sufficiently lighter than the abrasive.
  • the self-propelled apparatus of this invention will normally contain an electric motor or gasoline engine as a drive or propelling means. Note again electric motor 9 driving the brush and the apparatus through wheel 22. As noted previously, however, the selfpropelling devices of this invention are preferred only.
  • the abrasive surface cleaning apparatus of this invention normally operate, whether self-propelled or extraneously propelled, at speeds in the range of 0 to about 400 feet per minute. At the lower speeds, self propelled devices are more useful. Preferred operating speeds are about 20 to 200 feet per minute and are generally determined by the type of surface being treated and the desired effect thereon.
  • FIG. Ill represents a bottom view of the seal means I and rotating brush 8 useful in the apparatus of this invention.
  • the seal means is constructed from suitable resilient or flexible materials as discussed previously.
  • a flange or flap 23 is attached 'to the backside of the seal to direct or conduct a stream of the abrasive material passing under the seal towards the rotating brush for recovery.
  • FlG. lV represents a side view of a portion of the continuous belt elevator means 12 with attached bucket or scoop means 13.
  • the bucket is attached snugly to the belt, preferably by counter-sunk attachment means 24 such as rivets or bolts.
  • the bucket or scoop itself is shaped on the inside so as to direct the abrasive into the hopper when in dumping position.
  • a mobile, continuously operable surface treating apparatus comprising in combination: an enclosure with an open side adapted to contact the surface to be treated, projecting means within the enclosure for directing a stream of abrasive particles through the open side of the enclosure onto the surface to be treated, resilient sealing means around the boundary of the open side of the enclosure to restrain spent abrasive, rotating brush means located behind the enclosure with open side to recover the spent abrasive collected within the enclosure and passing under the resilient sealing means upon movement of the apparatus across the surface being treated, and recirculation means to return the spent, recovered abrasive material to the projecting means.
  • recirculation means comprises continuous belt elevator means in conjunction with a storage hopper for the spent, recovered abrasive.
  • the continuous belt elevator means comprises a combination an outer housing surrounding the continuous belt, a continuous flexible belt having attached thereto a plurality of bucket means, said bucket means not being in contact with the housing during operation and being adapted to recover and transport particulate matter from the bottom of the housing to the top of the housing for dumping into a storage hopper, drive means to drive the belt and maintain the belt in a four-sided shape providing a lower horizontal pick-up flight in which the bucket means are below the belt, an elevator flight, an upper horizontal delivery flight in which the bucket means are above the belt, and a descending return flight, and a storage hopper beneath the delivery flight at the top of the housing to collect particulate matter dumped from the plurality of bucket means during operation.
  • the apparatus of claim I further containing a drive means to provide a self-propelled apparatus.
  • the apparatus of claim 1 further containing a dust collection means to remove powdered grit and dust from the spent abrasive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Cleaning In General (AREA)
  • Chain Conveyers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Pinball Game Machines (AREA)
US112543A 1971-02-04 1971-02-04 Abrasive surface cleaning apparatus Expired - Lifetime US3691689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11254371A 1971-02-04 1971-02-04

Publications (1)

Publication Number Publication Date
US3691689A true US3691689A (en) 1972-09-19

Family

ID=22344472

Family Applications (1)

Application Number Title Priority Date Filing Date
US112543A Expired - Lifetime US3691689A (en) 1971-02-04 1971-02-04 Abrasive surface cleaning apparatus

Country Status (5)

Country Link
US (1) US3691689A (enrdf_load_stackoverflow)
JP (1) JPS5516783B1 (enrdf_load_stackoverflow)
CA (1) CA944155A (enrdf_load_stackoverflow)
DE (2) DE7204268U (enrdf_load_stackoverflow)
GB (2) GB1317415A (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858359A (en) * 1974-01-10 1975-01-07 Wheelabrator Frye Inc Mobile surface treating apparatus
US3872625A (en) * 1973-06-11 1975-03-25 Sintokogio Ltd Pendulous blasting apparatus
US3877175A (en) * 1973-05-24 1975-04-15 Wheelabrator Frye Inc Mobile surface treating apparatus
US3906673A (en) * 1973-03-20 1975-09-23 Hitachi Shipbuilding Eng Co Abrasive cleaning machine
US3934373A (en) * 1974-08-16 1976-01-27 Wheelabrator-Frye, Inc. Portable surface treating apparatus
US3945155A (en) * 1974-01-14 1976-03-23 Wheelabrator-Frye, Inc. Method of removing ice from a surface by blasting
US3977128A (en) * 1975-04-21 1976-08-31 Goff James R Surface treating apparatus
US4020597A (en) * 1974-10-25 1977-05-03 Magstar Engineering Co., Ltd. Mobile surface cleaning and polishing apparatus
US4035958A (en) * 1973-03-30 1977-07-19 Tokyo Kosei Kaken Co. Ltd. Mobile floor cleaning and polishing device
US4376358A (en) * 1976-12-20 1983-03-15 Robert T. Nelson Surface treating apparatus
US4382352A (en) * 1981-03-05 1983-05-10 Nelson Robert T Apparatus for cleaning surfaces, including means for separating debris and abrasive material
FR2516838A1 (fr) * 1981-11-24 1983-05-27 Nelson Robert Appareil de nettoyage d'une surface a l'aide d'un materiau abrasif
US4753052A (en) * 1985-05-01 1988-06-28 Dickson Industries, Inc. Surface blasting apparatus
US4894959A (en) * 1988-05-19 1990-01-23 Hoover & Wells, Inc. Method and apparatus for cleaning a surface utilizing shot blasting
USD314257S (en) 1988-05-06 1991-01-29 Hoover & Wells, Inc. Surface cleaning vehicle
USD349790S (en) 1992-09-02 1994-08-16 Hoover Robert E Blast head for an abrasive cleaning machine
USD351490S (en) 1992-10-16 1994-10-11 Hoover Robert E Surface cleaning apparatus
US5520288A (en) * 1994-03-21 1996-05-28 Pct, Inc. Abrasive grit material recovery system
US6132296A (en) * 1997-08-19 2000-10-17 Mansfield; Philip Anthony Apparatus for treatment of surfaces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2526095A (en) * 2014-05-13 2015-11-18 Friction Safe Ltd Friction enhancement of a paved surface

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424955A (en) * 1944-09-26 1947-07-29 Pangborn Corp Tumbling mill
US2483176A (en) * 1948-05-24 1949-09-27 William H Mead Surface treating apparatus
US2628456A (en) * 1952-01-15 1953-02-17 Mariblast Corp Sandblasting device
US2684558A (en) * 1952-06-25 1954-07-27 Harris Thomas Apparatus for cleaning road surfaces
US3034262A (en) * 1959-11-05 1962-05-15 Eugene T Pawlson Resurfacing and finishing machine
US3380196A (en) * 1965-01-19 1968-04-30 Promecan Sisson Lehmann Surface treating apparatus
US3448544A (en) * 1966-09-02 1969-06-10 Vacu Blast Co Inc Grit blasting apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424955A (en) * 1944-09-26 1947-07-29 Pangborn Corp Tumbling mill
US2483176A (en) * 1948-05-24 1949-09-27 William H Mead Surface treating apparatus
US2628456A (en) * 1952-01-15 1953-02-17 Mariblast Corp Sandblasting device
US2684558A (en) * 1952-06-25 1954-07-27 Harris Thomas Apparatus for cleaning road surfaces
US3034262A (en) * 1959-11-05 1962-05-15 Eugene T Pawlson Resurfacing and finishing machine
US3380196A (en) * 1965-01-19 1968-04-30 Promecan Sisson Lehmann Surface treating apparatus
US3448544A (en) * 1966-09-02 1969-06-10 Vacu Blast Co Inc Grit blasting apparatus

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906673A (en) * 1973-03-20 1975-09-23 Hitachi Shipbuilding Eng Co Abrasive cleaning machine
US4035958A (en) * 1973-03-30 1977-07-19 Tokyo Kosei Kaken Co. Ltd. Mobile floor cleaning and polishing device
US3877175A (en) * 1973-05-24 1975-04-15 Wheelabrator Frye Inc Mobile surface treating apparatus
US3872625A (en) * 1973-06-11 1975-03-25 Sintokogio Ltd Pendulous blasting apparatus
US3858359A (en) * 1974-01-10 1975-01-07 Wheelabrator Frye Inc Mobile surface treating apparatus
US3945155A (en) * 1974-01-14 1976-03-23 Wheelabrator-Frye, Inc. Method of removing ice from a surface by blasting
US3934373A (en) * 1974-08-16 1976-01-27 Wheelabrator-Frye, Inc. Portable surface treating apparatus
US4020597A (en) * 1974-10-25 1977-05-03 Magstar Engineering Co., Ltd. Mobile surface cleaning and polishing apparatus
US3977128A (en) * 1975-04-21 1976-08-31 Goff James R Surface treating apparatus
US4376358A (en) * 1976-12-20 1983-03-15 Robert T. Nelson Surface treating apparatus
US4382352A (en) * 1981-03-05 1983-05-10 Nelson Robert T Apparatus for cleaning surfaces, including means for separating debris and abrasive material
FR2516838A1 (fr) * 1981-11-24 1983-05-27 Nelson Robert Appareil de nettoyage d'une surface a l'aide d'un materiau abrasif
US4753052A (en) * 1985-05-01 1988-06-28 Dickson Industries, Inc. Surface blasting apparatus
USD314257S (en) 1988-05-06 1991-01-29 Hoover & Wells, Inc. Surface cleaning vehicle
US4894959A (en) * 1988-05-19 1990-01-23 Hoover & Wells, Inc. Method and apparatus for cleaning a surface utilizing shot blasting
USD349790S (en) 1992-09-02 1994-08-16 Hoover Robert E Blast head for an abrasive cleaning machine
USD351490S (en) 1992-10-16 1994-10-11 Hoover Robert E Surface cleaning apparatus
US5520288A (en) * 1994-03-21 1996-05-28 Pct, Inc. Abrasive grit material recovery system
US5622265A (en) * 1994-03-21 1997-04-22 Pct, Inc. Abrasive grit material recovery system
US5657876A (en) * 1994-03-21 1997-08-19 Pct, Inc. Abrasive grit material recovery system
US6132296A (en) * 1997-08-19 2000-10-17 Mansfield; Philip Anthony Apparatus for treatment of surfaces

Also Published As

Publication number Publication date
GB1317416A (en) 1973-05-16
JPS5516783B1 (enrdf_load_stackoverflow) 1980-05-07
GB1317415A (en) 1973-05-16
DE2205381A1 (enrdf_load_stackoverflow) 1972-08-10
DE7204268U (de) 1977-10-06
CA944155A (en) 1974-03-26

Similar Documents

Publication Publication Date Title
US3691689A (en) Abrasive surface cleaning apparatus
US3977128A (en) Surface treating apparatus
US3756377A (en) Continuous belt elevator
CA1141550A (en) Apparatus for the treatment of surfaces with particulate abrasive
US3788010A (en) Apparatus for treatment of vertically disposed surfaces
CA1179847A (en) Portable device for treating surfaces
US4336671A (en) Surface cleaning apparatus
US4052820A (en) Portable surface treating apparatus
US4433511A (en) Mobile abrasive blasting surface treating apparatus
US3934373A (en) Portable surface treating apparatus
US4035958A (en) Mobile floor cleaning and polishing device
US3877175A (en) Mobile surface treating apparatus
US5285601A (en) Magnetic track self-propelled blast cleaning machine
US3900968A (en) Mobile cleaning and polishing device
US3858359A (en) Mobile surface treating apparatus
US4202142A (en) Abrasive particle blast apparatus for surface treatment
US4377922A (en) Portable apparatus for treating surfaces
US4020597A (en) Mobile surface cleaning and polishing apparatus
US4275531A (en) Abrasive particle blast apparatus for surface treatment
US4693041A (en) Surface blasting apparatus
US4092942A (en) Mobile shot blasting apparatus for shot blasting the bottom of a ship or the like
US4377923A (en) Surface treating apparatus
US5885141A (en) Portable blast wheel cleaning machine
US5231806A (en) Air sweep system for mobile surface abrading apparatus
NL8100299A (nl) Inrichting voor het behandelen van de bovenzijde van een horizontaal of hellend oppervlak.