US3750339A - Pipe cleaning apparatus - Google Patents

Pipe cleaning apparatus Download PDF

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Publication number
US3750339A
US3750339A US00209720A US3750339DA US3750339A US 3750339 A US3750339 A US 3750339A US 00209720 A US00209720 A US 00209720A US 3750339D A US3750339D A US 3750339DA US 3750339 A US3750339 A US 3750339A
Authority
US
United States
Prior art keywords
pipe
conveyor
abrasive
working unit
belt
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
US00209720A
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English (en)
Inventor
C Barnes
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.)
Pangborn Corp
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Application granted granted Critical
Publication of US3750339A publication Critical patent/US3750339A/en
Assigned to KENNECOTT CORPORATION reassignment KENNECOTT CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1980 NORTH DAKOTA Assignors: BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY THE, CHASE BRASS & COPPER CO. INCORPORATED, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, PLAMBEAU MINING CORPORATION, RIDGE MINING CORPORATION (ALL MERGED INTO)
Assigned to NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION reassignment NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION, A CORP. OF DE.
Assigned to PANGBORN CORPORATION reassignment PANGBORN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENNECOTT CORPORATION
Assigned to MERRILL LYNCH INTERFUNDING INC. reassignment MERRILL LYNCH INTERFUNDING INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION
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
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • 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 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
    • 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 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/10—Treating the inside of pipes
    • F16L2101/12—Cleaning

Definitions

  • ABSTRACT In an apparatus for cleaning the interior of a pipe or like tubular object, a working unit which moves longitudinally through the pipe has a throwing wheel for discharging abrasive particles against the interior surface of the pipe. As the working unit moves through the pipe, the spent abrasive is collected and returned to the throwing wheel for reuse.
  • This invention relates to apparatus for cleaning the interior of large diameter pipes.
  • One device described in U.S. Pat. No. 3,151,4l8 to Powell et al., includes a carriage with an upper and lower arm, each arm supports a throwing wheel at the end thereof.
  • the upper arm blast wheel cleans the out side surface while the lower arm blast wheel cleans the inside surface of the pipe.
  • Abrasive is fed to the lower wheel through a trough which extends from the exterior of the pipe to the blasting wheel.
  • a trough which extends from the exterior of the pipe to the blasting wheel.
  • apparatus of the prior art have been found deficient in one or more respect for cleaning long, large diameter pipes.
  • a working unit is adapted to be inserted into the interior of a pipe or tubular object for cleaning the interior surface thereof.
  • the working unit includes supporting means for permitting rotational movement of the pipe with respect to the working unit as well as permitting the working unit to be inserted and retracted from the interior of the pipe.
  • the working unit includes an abrasive blasting means for cleaning the interior surface of the pipe and conveyor system for collecting and returning projected abrasive to the abrasive blast means for reuse.
  • the apparatus of the present invention does not require a continuous supply of abrasive from the exterior opening of the pipe. Therefore, the working unit can more effectively clean great lengths of pipe. Furthermore, the accumulation of spent abrasive particles is reduced since the working unit of the present invention reuses the abrasive within the pipe. Thus, the present invention obviates many deficiencies of prior art devices.
  • FIG. Ia and FIG. lb illustrate respective portions of one length of pipe with the abrasive cleaning apparatus of the present invention
  • FIG. 2 is an end elevational view of the apparatus of FIG. lb;
  • FIG. 3 is a side elevational view of the working unit of the present invention within a section of pipe;
  • FIG. 4 is an end elevational view along section 4-4 of FIG. 3;
  • FIG. 5 is an end elevational view along section 5-5 of FIG. 3;
  • FIG. 6 is an end elevational view along section 6-6 of FIG. 3.
  • FIGS. la, lb and 2 The overall apparatus of the present invention is illustrated in FIGS. la, lb and 2.
  • a longpipe 11 is supported by rollers 13 which are driven for rotating the pipe 11.
  • stations 15 and 16 are provided for receiving spent abrasive from a working unit 17 and recharging the working unit 17 with clean abrasive.
  • the drawings illustrate two stations 15 and 16, it is to be recognized that only one station is needed and for the sake of convenience, only one station 15 is hereinafter described.
  • the station 15 includes a hopper 18 for receiving spent abrasive from the working unit 17. Spent abrasive from the hopper 18 is fed through a tube 19 to the elevator 21 which conveys it to an air wash separator 23.
  • the separator 23 is of the type described in U.S. Pat. No. 3,368,677 to Bradley, Jr., and effects a separation of the useful shot from waste material. This is accomplished by introducing an air curtain across a separating zone which includes a plurality of skimmer plates. The air curtain carries the lightweight contaminants over the skimmer plate and permits the heavier particlesto fall downwardly.
  • the clean abrasive together with new make-up abrasive is stored in a hopper 25 which includes an abrasive gate for metering shot into the working unit 17.
  • the stations 15 and 16 include retractable seals 27 for maintaining a sealing relationship with the ends of the pipe 11 and adapted to accommodate pipes of varying sizes. The seals are effective in confining the dust and debris generated by the cleaning process to the location of the stations 15 and 16.
  • a station 15 is provided at one end of the pipe 11 and station 16 at the other end.
  • Each of the stations 15 and 16 includes a working unit 17 for cleaning one-half of the pipe 11.
  • the working unit 17 of the present invention includes an abrasive blasting means mounted on a frame 31 which is supported for longitudinal movement through the pipe 11.
  • a boom or elongated member 33 is secured at one end to the working unit 17 and at the other end to a car 35 which drives the working unit or mole 17 into or out of the pipe 11. It is contemplated that other equivalent means can be used for inserting and retracting the mole or working unit 17, such as a hydraulic boom.
  • FIG. 3 is a side elevational view showing the working unit 17 within a section of pipe 11.
  • the frame 31 of the working unit 17 consists of a plurality of vertical members 37 which are horizontally spaced and circular in shape.
  • a suitable cross member 39 maintains the structural support and position of the vertical members 37.
  • the vertical members 37 are spaced so as to form a plurality of compartments 4], 42.
  • a pair of abrasive blasting wheels 29 with their respective motors 47 are positioned in an abrasive blasting compartment 41.
  • the wheels or centrifugal throwing means 29 and related structure are mounted to a cross member 39 on the upper portion of the frame 31 above the axis of rotation of pipe 11.
  • the wheels 29 rotate about an axis substantially perpendicular to the axis of the pipe 11 so as to form a blast pattern extending lengthwise of the pipe 11.
  • a pair of wheels 29 which rotate in opposite directions are utilized so that a uniform blast pattern can be established along the interior surface of the pipe 11.
  • the working unit 17 is supported to permit rotational movement of the pipe 11 with respect thereto so as to give a fixed blast pattern as the shot is sprayed downwardly from the abrasive blasting wheels 29. As the pipe Ill is rotated and the working unit 17 is moved gradually in a longitudinal direction so that entire inner surface of the pipe 11 is thus spray blasted and cleaned.
  • the working unit 17 is supported at opposite ends thereof by rollers or casters 49 which are attached to the frame 31 for swivel movement to permit the working unit 17 to move forward while the pipe 11 rotates. As illustrated in FIG. 3, each end includes a plurality of casters 49 which engage the interior surface of the pipe 11 and maintain the alignment of the working unit 17 within the pipe.
  • An abrasive pickup or collecting compartment 42 which trails the blasting compartment 41 and is adjacent thereto includes means for collecting the spent abrasive.
  • a conveyor system is mounted within the compartment between vertical support members 37.
  • a conveyor surface or belt 53 is mounted for rotation in the same direction as the rotation of the pipe 11 and preferably moves at approximately the same speed as the pipe 11.
  • One end of the conveyor surface 53 which is adjacent the lower end of the pipe 11 picks up abrasive which is fed thereto by the rotation of the pipe 11. Due to the closeness or proximity of the conveyor surface 53 to the interior surface of the pipe 11, the abrasive is held between the conveyor surface 53 and the interior of the pipe 11.
  • the conveyor surface 53 is preferably provided with a plurality of cleats 57 for contacting the interior surface of the pipe 11 to prevent abrasive particles from falling.
  • the conveyor surface 53 is preferably an endless belt which is trained about a plurality of rollers 59.
  • Each of the rollers 59 is mounted for rotation between the vertical members 37 and within the compartment 42.
  • At least one of the rollers 59 is driven by a suitable means, such as an electric motor 61 through a suitable drive train such as a chain 63 connected between a motor sprocket and a roller sprocket.
  • the rollers 59 can be mounted between a pair of plates pivotably mounted on the drive shaft.
  • a pneumatic cylinder connected between a respective support member and hinged plate can be operated for retracting the conveyor system to allow clearance between the belt and the pipe 11 interior for fast mold retraction for movement forward.
  • the conveyor discharges the collected abrasive particles at the upper end 55 thereof into a trough 65 which extends axially from the collecting compartment 42 to the blasting compartment 41.
  • a screw conveyor 67 is positioned in the trough 65 for transporting the abrasive along the trough 65 to the abrasive blasting wheel 29.
  • the screw conveyor 67 is powered by a suitable means such as an electric motor 61 which can be the same electric motor 61 used to drive the belt 53.
  • the driving connection between the electric motor 61 and the screw conveyor 67 can be accomplished by any suitable means such as an endless chain 69 connected between respective sprockets of the motor 61 and screw conveyor 67.
  • compartments 71 and 72 At either end of the working unit there are provided additional compartments 71 and 72.
  • the compartment 72 trailing the abrasive blasting wheels 29 can be used to house ballast to lower the center of gravity and prevent rolling of the working unit 17.
  • the compartment 71 adjacent to the abrasive blasting wheels 29 can be used for storage of abrasive particles to supplement and replace abrasive which is lost through ricocheting and breakdown.
  • a valve 77 with a gate that can be remotely controlled can be used for releasing the stored abrasive at the proper time.
  • the suitable electrical connections needed for running the electric motors connected with the working unit and for energizing the controls associated therewith are provided through the elongated member 33 connected tothe working unit 17 at one end thereof.
  • the working units or moles 17 are in a retracted position when the pipe 11 is lifted onto the driving rollers 13 between the stations 15 and 16.
  • the respective seals 27 of each of the stations 15 and 16 put into place over an end of the pipe 11. This permits the circulation of air from one end of the pipe 11 to the other thereby decreasing the pollution due to dust.
  • the drive rollers 13 are actuacted so that the pipe 11 rotates in a given direction.
  • the moles 17 are substantially identical with the abrasive blasting means 29 being located on one side and the collecting means on the other side.
  • the mole 17 which is associated with station 15 is utilized to clean the pipe as it is inserted into the end of the pipe 11, while the mole 17 which is associated with station 16 is utilized to clean the pipe 11 as it is retracted.
  • the conveyor system collecting spent abrasive follows the abrasive blasting apparatus.
  • the unit is so designed so that each mole 17 cleans about one-half of the interior of the pipe 11.
  • the working unit 17 can be withdrawn rapidly into the station at a position over the hopper 18.
  • a working unit adapted to be inserted into the interior of a pipe or tubular object for cleaning the interior surface thereof comprising:
  • an abrasive blasting means mounted on said frame and adapted to throw abrasive particles against the interior surface of a pipe when said working unit is inserted therein;
  • a conveyor system mounted on said frame adjacent said abrasive blasting means for collecting abrasive particles thrown from said abrasive blasting means, said conveyor having a conveying surface adapted to be adjacent to and substantially conforming with the interior surface of the pipe and adapted to carry abrasive particles upwardly in the direction of rotation of the pipe, said conveyor adapted to convey projected abrasive particles to said feeding means.
  • said conveyor includes a plurality of rollers with said belt trained therearound.
  • Apparatus according to claim 2 including means for driving said belt at a speed sufficient to move the conveyor surface at about the same speed as the interior surface of the pipe when said pipe is rotated.
  • said feeding means comprises a trough and a screw conveyor disposed within said trough.
  • abrasive blasting means includes a centrifugal throwing wheel adapted to have an axis of rotation above the axis of rotation of the pipe and substantially perpendicular thereto when said working unit is cleaning said pipe.
  • said frame includes a plurality of substantially vertically aligned members forming a first and second compartment, said abrasive blasting means being mounted within said first compartment, and said conveyor being mounted within said second compartment.
  • Apparatus according to claim 7 wherein said surface comprises an endless flexible belt, and said conveyor includes a plurality of rollers mounted between a pair of vertical members with said belt trained therearound.
  • said feeding means comprises a trough with a screw conveyor disposed therein Ml.
  • said conveyor is adapted to discharge spent abrasive into said trough, said trough extending between said first and second compartments.
  • Apparatus according to claim 8 including means for driving said conveyor and said screw.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Structure Of Belt Conveyors (AREA)
US00209720A 1971-12-20 1971-12-20 Pipe cleaning apparatus Expired - Lifetime US3750339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20972071A 1971-12-20 1971-12-20

Publications (1)

Publication Number Publication Date
US3750339A true US3750339A (en) 1973-08-07

Family

ID=22779988

Family Applications (1)

Application Number Title Priority Date Filing Date
US00209720A Expired - Lifetime US3750339A (en) 1971-12-20 1971-12-20 Pipe cleaning apparatus

Country Status (10)

Country Link
US (1) US3750339A (de)
JP (1) JPS4869196A (de)
AU (1) AU464560B2 (de)
BR (1) BR7208947D0 (de)
CA (1) CA976760A (de)
DE (1) DE2262379A1 (de)
FR (1) FR2165604A5 (de)
GB (1) GB1399149A (de)
IT (1) IT974130B (de)
ZA (1) ZA728854B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824738A (en) * 1972-11-01 1974-07-23 W Hall Pipe cleaning apparatus
US3835587A (en) * 1973-07-03 1974-09-17 W Hall Pipe cleaning apparatus and method
US3848815A (en) * 1972-05-17 1974-11-19 Carborundum Co Granulating apparatus
US4016681A (en) * 1975-12-11 1977-04-12 Wheelabrator-Frye, Inc. Surface treatment device for large diameter pipe sections
JPS52115573A (en) * 1976-03-23 1977-09-28 Nippon Packaging Kk Method of removing scale on pipe inner surface
US4887585A (en) * 1988-05-20 1989-12-19 Nutt David H Method and apparatus for cutting taps in sewer lines
US6447366B1 (en) 2000-07-31 2002-09-10 The Board Of Regents, Florida International University Integrated decontamination and characterization system and method
EP1591203A1 (de) * 2004-04-28 2005-11-02 Horst-Dieter Schlick Verfahren zum Innenstrahlen von Rohren
WO2013071394A1 (en) * 2011-11-17 2013-05-23 Envirologics Engineeering Inc. Pipe cleaning apparatus, use, system, and method
CN103599909A (zh) * 2013-11-26 2014-02-26 武钢集团昆明钢铁股份有限公司 一种低用气量炼钢氧气管道安全吹扫方法及其吹扫装置
CN104384156A (zh) * 2014-11-10 2015-03-04 成都佳美嘉科技有限公司 钢管清洗机
CN105773340A (zh) * 2016-05-13 2016-07-20 沈阳众拓机器人设备有限公司 汽车发动机凸轮轴去毛刺机
US10259100B2 (en) * 2016-12-19 2019-04-16 Shawcor Ltd. Internal weld blasting

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753090B2 (en) * 2005-10-18 2010-07-13 Danny Earp Blasting fluid effluent containment device
CN104772308B (zh) * 2015-04-13 2017-01-04 福建省迅达石化工程有限公司 一种软轴淤渣粉碎移送机
CA3065141A1 (en) * 2017-05-29 2018-12-06 Oerlikon Metco Ag, Wohlen A plasma coating lance for internal coatings
CN109129209A (zh) * 2018-09-19 2019-01-04 四川西南环保科技防腐股份有限公司 用于管道内补口的抛丸车
CN112282038A (zh) * 2020-09-27 2021-01-29 上海誉帆环境科技有限公司 一种管道淤泥抽取装置
CN112372466A (zh) * 2020-10-27 2021-02-19 杭州职业技术学院 一种汽车配件加工专用的磨床

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848815A (en) * 1972-05-17 1974-11-19 Carborundum Co Granulating apparatus
US3824738A (en) * 1972-11-01 1974-07-23 W Hall Pipe cleaning apparatus
US3835587A (en) * 1973-07-03 1974-09-17 W Hall Pipe cleaning apparatus and method
US4016681A (en) * 1975-12-11 1977-04-12 Wheelabrator-Frye, Inc. Surface treatment device for large diameter pipe sections
JPS52115573A (en) * 1976-03-23 1977-09-28 Nippon Packaging Kk Method of removing scale on pipe inner surface
JPS5442715B2 (de) * 1976-03-23 1979-12-15
US4887585A (en) * 1988-05-20 1989-12-19 Nutt David H Method and apparatus for cutting taps in sewer lines
US6447366B1 (en) 2000-07-31 2002-09-10 The Board Of Regents, Florida International University Integrated decontamination and characterization system and method
EP1591203A1 (de) * 2004-04-28 2005-11-02 Horst-Dieter Schlick Verfahren zum Innenstrahlen von Rohren
WO2013071394A1 (en) * 2011-11-17 2013-05-23 Envirologics Engineeering Inc. Pipe cleaning apparatus, use, system, and method
CN103599909A (zh) * 2013-11-26 2014-02-26 武钢集团昆明钢铁股份有限公司 一种低用气量炼钢氧气管道安全吹扫方法及其吹扫装置
CN104384156A (zh) * 2014-11-10 2015-03-04 成都佳美嘉科技有限公司 钢管清洗机
CN105773340A (zh) * 2016-05-13 2016-07-20 沈阳众拓机器人设备有限公司 汽车发动机凸轮轴去毛刺机
US10259100B2 (en) * 2016-12-19 2019-04-16 Shawcor Ltd. Internal weld blasting

Also Published As

Publication number Publication date
ZA728854B (en) 1973-09-26
AU464560B2 (en) 1975-08-15
GB1399149A (en) 1975-06-25
JPS4869196A (de) 1973-09-20
CA976760A (en) 1975-10-28
AU5019972A (en) 1974-06-20
BR7208947D0 (pt) 1973-08-30
FR2165604A5 (de) 1973-08-03
IT974130B (it) 1974-06-20
DE2262379A1 (de) 1973-06-28

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AS Assignment

Owner name: KENNECOTT CORPORATION

Free format text: MERGER;ASSIGNORS:BEAR CREEK MINING COMPANY;BEAR TOOTH MINING COMPANY;CARBORUNDUM COMPANY THE;AND OTHERS;REEL/FRAME:003961/0672

Effective date: 19801230

AS Assignment

Owner name: NATIONAL WESTMINSTER BANK USA, 592 FIFTH AVENUE, N

Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION, A CORP. OF DE.;REEL/FRAME:004576/0188

Effective date: 19860724

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Owner name: PANGBORN CORPORATION, PANGBORN BLVD., HAGERSTOWN,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KENNECOTT CORPORATION;REEL/FRAME:004614/0421

Effective date: 19860725

AS Assignment

Owner name: MERRILL LYNCH INTERFUNDING INC., NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION;REEL/FRAME:005237/0297

Effective date: 19891211