US2924912A - Blast treatment apparatus - Google Patents

Blast treatment apparatus Download PDF

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Publication number
US2924912A
US2924912A US813378A US81337859A US2924912A US 2924912 A US2924912 A US 2924912A US 813378 A US813378 A US 813378A US 81337859 A US81337859 A US 81337859A US 2924912 A US2924912 A US 2924912A
Authority
US
United States
Prior art keywords
vestibule
blast
stationary
compartment
movable
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
US813378A
Other languages
English (en)
Inventor
Harold F Schulte
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.)
Wheelabrator Corp
Original Assignee
Wheelabrator 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
Application filed by Wheelabrator Corp filed Critical Wheelabrator Corp
Priority to US813378A priority Critical patent/US2924912A/en
Priority to CH8200459A priority patent/CH375247A/de
Priority to FR815442A priority patent/FR1244889A/fr
Priority to GB3228/60A priority patent/GB917171A/en
Application granted granted Critical
Publication of US2924912A publication Critical patent/US2924912A/en
Priority to BE588405A priority patent/BE588405A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
    • B24C3/14—Apparatus using impellers

Definitions

  • This invention relates to blast finishing machines such as are used in the various industries to clean or recondition or otherwise surface-treat workpieces such as castings, weldments, or other rough surfaced articles. Such machines are also used for the purposes of descaling or deburring or otherwise surface-treating such articles; and the present invention relates more particularly to an improved machine for the above purposes which is adapted to accommodate with improved facility extremely long workpieces.
  • Another object is to provide an improved machine housing and workpiece handling arrangement as aforesaid whereby relatively large workpieces may be loaded into and processed by the machine and then unloaded, with greatly improved facility.
  • Still another object is to provide a machine arrangement as aforesaid which is structurally simple and foolproof in operation, and which is easily sealed against escape of blasting medium or dust etc. therefrom.
  • Figs. 1a and 1b comprise a composite side elevational view of a blasting machine and workpiece housing arrangement of the present invention
  • Figs. 2a and 2b comprisea composite top plan view of the machine of Figs. 1a--lb;
  • Fig. 3 is a vertical section on enlarged scale taken along line III-III of Fig. 1b.
  • the invention is embodied in a machine comprising generally a stationary blast housing 10 comprising a top wall 12 and opposite side walls 14, 14;being thereby open at its opposite ends.
  • the housing 10 is provided with a laterally extending stationary tunnel-like housing or vestibule as indicated generally at 15, comprising top and sidewall portions in extension of the corresponding Walls of the housing portion 10.
  • the vestibule 15 is closed at its outer end as indicated at 16 and is provided thereat with a pair of air outlet manifolds 18 leading to conduits 19, 19, which in turn connect through suction ducts to some suitable dust collector device (not shown) for purposes to be explained hereinafter.
  • Parallel track rails as illustrated at 20, 20 supported upon cross ties or beams 22 run lengthwise through the housing portions 10, 15.
  • the rails also extend from the housing 10 in the opposite direction substantially at floor level out into the adjacent'factory space for a distance substantially equal to the length of the stationary vestibule portion 15.
  • a workpiece carrying car as indicated at 25 mounted upon rollers 26 may be arranged to run upon the track rails 20, 20, and to shuttle back and forth from the loading position thereof at the States Pant left hand end of the machine as shown in Figs. 1a, 2a, through theblast housing 10, then into the stationary vestibule 15; and then in reverse direction to return for unloading again at the left end of the machine.
  • One or more blast media throwing machines as indicated at 30 are mounted upon the blast housing structure 10 in any desired pattern of arrangement according to the nature of the workpieces to be processed; and are thereby disposed to project into the interior of the chamber 10 against the workpieces to be processed a corresponding number of streams of blasting media as illustrated at 32 (Fig. 3).
  • the blasting machines 30 in operation the workpieces may be shuttled back and forth through the housing 10 any required number of times so as to be surface-processed by the blasting media throughout the entire lengths of the workpieces.
  • the portion of the trackway which extends to the left of the housing 10 in the drawing herewith is arranged to be enclosed by a movable tunnel-like housing or vestibule as indicated generally at 35.
  • the vestibule 35 is of a form similar to that of the stationary vestibule 15 but is of slightly lesser sectional dimensions whereby it is adapted to retract or telescope through the central housing 10 and into the interior of the stationary vestibule 15.
  • This retractable vestibule 35 is carried by means of rollers 36 running upon parallel rails 38, 38.
  • the retractable vestibule 35 is arranged to straddle the work carrying car 25 and to shuttle back and forth between its telescoped position interiorly of the vestibule 15 and its laterally extended position as illustrated in Figs. 1a, 2a.
  • a stationary end panel as illustrated at 40 is disposed to abut the end of the movable vestibule 35 when the latter is disposed outwardly at its fully extended position as shown in Figs. 1a, 2a.
  • the end panel 40 includes an air inlet duct 42 opening as indicated at 44 into the atmosphere exteriorly of the machine, whereby when the machine is in operation the suction ducts 19, 19 at the opposite end of the machine will operate to create a draft of air through the inlet 44 and the ducts 42, through the interior of the vestibule 35 and the central housing 10 and the stationary housing 15, and thence through the manifolds 18, 18 into the conduits 19, 19 leading to appropriate dust collectors, or the like (not shown) as may be preferred.
  • the blast media throwing machines 30 are preferably disposed (in plan view) in canted attitudes relative to the direction of movement of the workpieces back and forth through the machine.
  • the blast streams are projected towards the workpieces in slightly oblique directions, as the workpieces shuttle back and forth under the line of fire of the machines.
  • This arrangement provides good blasting results when handling workpieces of such shapes for example as include parts which would shield other parts of the workpieces from bast media if the projection directions were normal to the workpiece surfaces being treated.
  • the blast media circulation system of the machine is illustrated herein to include blast media collection hoppers 50 running lengthwise under the machine and delivering to a pair of tandem disposed reciprocating flight conveyors 52, 52 running under the trackways supporting the workpiece carrying'cart 25.
  • the reciprocating conveyors 52, 52 deliver the collected blast media to a crosswise disposed screw conveyor 54 which delivers the media to a vertical elevator 55 (Fig. 3).
  • the elevator 55 in turn delivers to a conveyor 56 which discharges into a sizing separator 58. Oversize debris from the separator 58 is discharged to a suitable disposal point as through a conduit 59; and the fine debris or spent media is discharged to disposal as through a conduit 66).
  • the reusable blast media issues from the bottom of the separator 58 through a conduit 62 to an elevator 64 which delivers into a cross conveyor 66 discharging into hoppers, 68, -69, from which the. blast media. flows by gravity through conduits 70 as required, to feed the blast machines 30.
  • an endless power cable system may be employed.
  • such system may comprise a power chain 75 driven by a cross shaft 76 which in turn is driven by means of a power unit 78.
  • the workpiece carrying table 25 may be powered by means of an endless power chain as indicated at '79, which is operated by a power unit indicated at 80.
  • Motor drive devices for the conveyors, elevators and other powered elements of the macihne are illustrated but are not described in detail herein, because it is believed clear that their functions will be apparent and well understood without further explanation.
  • the controls for the motors driving the vestibule 35 and the car 25 may be either manual or semiautomatic and arranged to automatically run the workpiece car back and forth through the machine any predetermined number of times (as by means of suitable limit switch and cycling control devices, not shown) as may be preferred.
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media into theninterior thereof,v a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longest workpiece to be accommodated, and a second movable vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin.
  • a blasting apparatus including anopen ended blast compartment having blast'media throwing means disposed to project blast media into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longest workpiece to be accommodated, a second movable vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, and a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relationwith said blast compartment.
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom for a distance substantially equal to thelength of the longest workpiece to be accommodated, a second movable vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being movably supported upon said trackway, and power means for causing said movable vestibule to move back and forth on said trackway.
  • a blastingapparatus including an open ended blast compartment having blast media throwing-means disposed to project blast media into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longestworkpiece to be accommodated, a second movable vestibule of similar length longitudinally movable 'ralative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being supported for movements back and forth upon said trackway, and a second trackway running interiorly of the rails of said first mentioned trackway and mounting a workpiece supporting car thereon.
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longest workpiece to be accommodated, a second movable vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being movably supported upon said trackway, power means for causing said movable vestibule to move back and forth upon said trackway, a second trackway running interiorly of the rails of said first mentioned trackway and mounting a workpiece supporting car thereon,
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom a for a distance substantially equal to the length of the longest workpiece to be accommodated, a second movable vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, said stationary vestibule being closed at its outer end, an air suction duct arranged in communication with said stationary vestibule to withdraw air and dust from interiorly of said apparatus for disposal, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being movably supported upon said trackway, power means for causing said
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media in oblique directions into the interior thereof, a stationary vestibule arranged in 6 open communication with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longest workpiece to be accommodated, and a second open ended vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin.
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media in oblique directions into the interior thereof, a stationary vestibule arranged in open communication with one end of said compartment and extending therefrom to a closed end portion disposed at a distance from the compartment substantially equal to the length of the longest workpiece to be accommodated, a second open ended vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, and a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment.
  • a blasting appaartus including an open ended blast compartment having blast media throwing means disposed to project blast media in oblique directions into the interior thereof, a stationary vestibule closed at one end and arranged in open communication at its other end with one end of said compartment and extending therefrom for a distance substantailly equal to the length of the longest workpiece to be accommodated, a second open ended vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being movably supported upon said trackway, and power means for causing said movable vestibule to move back and forth on said trackway.
  • a blasting apparatus including an open ended blast compartment having blast media throwing means disposed to project blast media into the interior thereof, a stationary vestibule closed at one end and arranged in open communication at its other end with one end of said compartment and extending therefrom for a distance substantially equal to the length of the longest workpiece to be accommodated, a second open ended vestibule of similar length longitudinally movable relative to said blast compartment and said stationary vestibule and so dimensioned as to telescopically move therewithin, a stationary end panel positioned to abut and close the outer end of said movable vestibule when the latter is in its extended position with its inner end in telescopic sealing relation with said blast compartment, a trackway extending substantially throughout the length of said stationary vestibule and towards the position of said stationary end panel, said movable vestibule being movably supported to shuttle back and forth upon said trackway, a workpiece carrying car movable back and forth within said vestibules and compartment, and controlled power means for motivating said movable vestibule and said car

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US813378A 1959-05-15 1959-05-15 Blast treatment apparatus Expired - Lifetime US2924912A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US813378A US2924912A (en) 1959-05-15 1959-05-15 Blast treatment apparatus
CH8200459A CH375247A (de) 1959-05-15 1959-12-18 Schleuderstrahl-Putzmaschine
FR815442A FR1244889A (fr) 1959-05-15 1960-01-12 Machine de nettoyage à projection de jets
GB3228/60A GB917171A (en) 1959-05-15 1960-01-29 Blast treatment apparatus
BE588405A BE588405A (fr) 1959-05-15 1960-03-08 Machine de nettoyage à projection de jets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US813378A US2924912A (en) 1959-05-15 1959-05-15 Blast treatment apparatus

Publications (1)

Publication Number Publication Date
US2924912A true US2924912A (en) 1960-02-16

Family

ID=25212208

Family Applications (1)

Application Number Title Priority Date Filing Date
US813378A Expired - Lifetime US2924912A (en) 1959-05-15 1959-05-15 Blast treatment apparatus

Country Status (5)

Country Link
US (1) US2924912A (de)
BE (1) BE588405A (de)
CH (1) CH375247A (de)
FR (1) FR1244889A (de)
GB (1) GB917171A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077996A (en) * 1961-08-08 1963-02-19 Macleod Company Blast cleaning room
US3108694A (en) * 1959-09-14 1963-10-29 Gen Electric System for collating documents in response to indicia apparing thereon
US3768740A (en) * 1972-01-03 1973-10-30 J Carpenter Reclamation of molded sand
US3770218A (en) * 1972-01-03 1973-11-06 Carborundum Co Apparatus for granulating molded sand

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070914A1 (de) * 1981-07-27 1983-02-09 MSI Malerei, Schiffs- und Industrieanlagen-Instandsetzungs GmbH & Co. KG Verfahren und Vorrichtung zum Sandstrahlen eines Gegenstandes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204636A (en) * 1938-09-24 1940-06-18 American Foundry Equip Co Apparatus for treating metal articles
US2337048A (en) * 1941-09-03 1943-12-21 Pangborn Corp Abrading apparatus
US2621446A (en) * 1952-04-16 1952-12-16 Hydraulic Supply Mfg Company Grit blasting device for cleaning pipes and the like
US2869291A (en) * 1955-05-03 1959-01-20 Michael Abraham Shot blasting machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204636A (en) * 1938-09-24 1940-06-18 American Foundry Equip Co Apparatus for treating metal articles
US2337048A (en) * 1941-09-03 1943-12-21 Pangborn Corp Abrading apparatus
US2621446A (en) * 1952-04-16 1952-12-16 Hydraulic Supply Mfg Company Grit blasting device for cleaning pipes and the like
US2869291A (en) * 1955-05-03 1959-01-20 Michael Abraham Shot blasting machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108694A (en) * 1959-09-14 1963-10-29 Gen Electric System for collating documents in response to indicia apparing thereon
US3077996A (en) * 1961-08-08 1963-02-19 Macleod Company Blast cleaning room
US3768740A (en) * 1972-01-03 1973-10-30 J Carpenter Reclamation of molded sand
US3770218A (en) * 1972-01-03 1973-11-06 Carborundum Co Apparatus for granulating molded sand

Also Published As

Publication number Publication date
GB917171A (en) 1963-01-30
CH375247A (de) 1964-02-15
FR1244889A (fr) 1960-10-28
BE588405A (fr) 1960-07-01

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