Abstract: A hydrodynamic apparatus for cleaning channels and for monitoring channels is provided for pipes and channels. A disadvantage of all conventional bottom floor cleaners, flushing heads, and channel-cleaning nozzles is that during the cleaning process no observation and determination of the soiling state or, respectively, of the cleaning state of the channel and no recognition of damaged areas in the channel is possible. According to the invention, a monitoring unit (6) is installed selectively in or at the channel-cleaning apparatus. For this purpose, for example, a hollow space (11) is furnished at the bottom floor cleaner (S), wherein the monitoring unit (6) is partly integrated into the hollow space (11). The monitoring unit (6) exhibits a camera module (7) or two camera modules (7a and 7b). A video emitter (15) is coordinated to each camera module (7). The transmission to a video receiver (V) is performed without cable wireless from the video emitter (15).

Abstract: A smoothing device, according to the present invention, is used to perform smoothing in a conduit line, or the like. The smoothing device has a fluid pressure motor with a cutter attached to its output shaft and guide rollers for guiding the smoothing device in the longitudinal direction of the conduit line. Prescribed ones among the guide rollers are relatively movable in the radial direction of the conduit line by fluid pressure cylinders, springs, or the like, and pressed against the inner wall of the conduit line. The remaining guide rollers are fixed to the smoothing device with respect to the radial direction of the conduit line so as to have an automatic aligning mechanism, thereby keeping the rotatable cutter along the center of the conduit line. In the fluid pressure motor, turbine and water nozzles, for injecting water to the turbine, are detachable, facilitating the replacement of worn parts.

Abstract: An apparatus for coating the inside of pipes An apparatus for coating the inside of pipes, in particular the coolant pipes of steam condensers and heat exchangers with plastics, having a supply unit (V) for bringing up and passing on coating material, an application unit (A) for applying the coating material brought up by the supply unit, and a control unit for monitoring and controlling the supply of coating material and the discharge of coating material on the inside walls of pipes, the application unit (A) having a guide tube (21) with a nose piece (29) to be mounted on the pipe to be coated and an application tube (18) with an application nozzle (30), said application tube being guided within the guide tube (21) and adapted to be introduced into the pipe to be coated through the nose piece (29).

Abstract: A water pipeline foreign matter obstruction remover having an interior space, the water output hole of a water output head at the center of the top end, a water hose connector at the bottom section, and a connector seat that conjoins the top section with the water output head. A number of water output openings are situated along the approximate middle section of the water output head and contained within the area between the water output head and the connector seat is a water output nozzle and a water output seat having a rotary water output head. A water output passage is situated along the interior of the water output nozzle, with the nozzle discharging from the center of the top section. Rotary cleaner arms are positioned at the top section, with a water output passage situated at the middle section.

Abstract: A deposit removal high pressure spray apparatus for removing heat conduction inhibiting deposits on U-tubes at the top of a shell and tube type of nuclear steam generator (10) tube bundle (16) by crawling along flanged outboard support beams (18) above the U-tubes bundle. The apparatus includes: a crawler (66) with motive means 68 for "inch worm" movement; a rotationally driven base 62 provides movement of the sprayhead to either side of the outboard support beam; a rotationally driven extension arm 60 on rotating base 62 has an elongated reciprocally driven elevator 58 thereon; and, a wrist 52 reversibly and rotatably driven by motor 54a sweeps sprayhead 52 with nozzles 56 to clean the top of the bundle 16 tube lanes of 90.degree., 45.degree. and 135.degree. efficiently.

Abstract: A counter-rotating sewer cleaning nozzle to provide improved efficient cleaning of interior surfaces of sewer lines. The counter-rotating sewer cleaning nozzle is comprised of a hose connector on one end and nose cone on the opposite end and retaining between them counter-rotating sleeves fitting over a cylindrical conduit. Each of the sleeves has spray jets in communication with a passageway connecting the cylindrical conduit to the hose connector for receiving water at high pressure from a high-pressure hose or pipe. The jets in the counter-rotating sleeves are at an oblique angle to the radius of the sleeves and the cylindrical conduit. The spray jets are angled in opposite directions in the forward and rear rotatable sleeves to provide counter rotation.

Abstract: A hydrodynamic tool for the cleaning of pipes and channels exhibits a pressurized water-entry inlet opening (2) connected to pressurized water-discharge outlet openings (4) through water guide channels (3). The water guide channels (3) are continuously connected to the pressurized water-entry inlet opening (2) with a hose connection (2a). The water guide channels (3) exhibit a largest possible deflection radius (r) and partially converge into one another. At least two water guide channels (3) rest with the innermost point of the diameter (d.sub.W1) at the center point (M) and with their outermost point of the diameter (d.sub.W1) at the outer diameter (d.sub.E) of the pressurized water-entry inlet opening (2). The water guide channels (3), corresponding to the arrangement of the pressurized water-discharge outlet openings (4), are either merging into the end of the deflection radius (r) or into the straight line region (3.G) and in an angle (.alpha.

Abstract: A vehicle mounted high pressure water cleaning apparatus includes a water delivery system, hydraulic system, and an electrical system working together to provide, alternatively, high pressure water for a cleaning operation, or recirculation of high pressure water back to a water tank. The hydraulic system is operable to either direct water toward a cleaning operation, or to wind in or play out the water delivery hose while either supplying water to the delivery hose under pressure or recirculating the water back to the water tank.

Abstract: The invention concerns a process for fitting a gas-injecting nozzle in the wall of an installation. The process is characterized in that an external supporting surface (11) whose shape matches the so-called internal supporting surface (12) of the passage (6) provided in the bedding brick is associated with the nozzle (2); the nozzle is placed opposite the passage (6) in the bedding brick: the nozzle (2) is moved in axial translation so as to adjust the position thereof along the longitudinal axis of the passage and move the front face of the nozzle into a desired initial position; the nozzle is locked in this desired initial position; and, at least periodically, the nozzle is inserted further forwards into the passage in the bedding brick in order to compensate the wear in the front face of the nozzle. The invention can be used to prevent clogging, such as in a cement producing plant.

Abstract: A hydrodynamic nozzle for the cleaning of pipes and channels exhibits a distribution chamber (7), joining to the pressurized water-entrance opening (4), wherein the pressurized water-discharge opening (5a, 5b) join into the distribution chamber (7) through channels (6a and 6b). The distribution chamber (7) exhibits a cone-shaped water subdivider (8), to which a defined radius (r1) follows, wherein the curvature of the radius (r1) is opposite to that of the pressurized water-entrance opening (4). The channels (6a and 6b) are merging tangentially at this radius (r1). Furthermore, the nozzle body (1) can be subdivided into an upper part (2) and a lower part (3), and can exhibit a separate form element (14), which forms the water subdivider (8) and the radius (r1), in the lower part (3). The degree of effectiveness is substantially increased with the nozzle according to the invention and thus the axial pressure of the exiting beam of liquid and the cleaning effect is substantially increased.

Abstract: A circuit is provided for the circulation of solvent to and from a valve having a movable component and a housing for movably housing the movable component. The movable component has a first orientation with respect to the housing in which it permits the flow of a valved fluid from the valve through a first port provided on the valve and a second orientation with respect to the housing in which it permits the flow of the valved fluid from the valve through a second port provided on the valve. The circuit includes a first passageway provided between the movable component and the housing. A third port is provided on the housing for the introduction of the solvent into the housing and a fourth port is provided on the housing for removal of the solvent from the housing. The first passageway couples the fourth port to the third port. The solvent is a solvent for the valved fluid. A reservoir is provided for the solvent, along with conduits for coupling the third and fourth ports to the reservoir.

Abstract: Disclosed is an automated pipe connection apparatus having an automated connection apparatus main body (1) capable of performing automated change-over between a group of pipelines and another group of pipelines, a washing/sterilizing utility block (2), and a drainage block (3). In particular, the automated pipe connection apparatus is provided with caps (111,112,114,115) for preventing intrusion of sundry bacteria into couplers (A1,A2,B1,B2) on standby and for performing washing and/or sterilization operation and also with washing- and/or sterilizing-purpose couplers (AWL,BWL).The apparatus according to this invention is superior in the operability for washing and sterilization and in the prevention of intrusion of sundry bacteria.

Abstract: A color-changing powder supply system for use in powder coating, etc. which can perform the color changing in a shorter time, has a simpler structure, requires less expensive equipment cost and installation/setup cost, and can be operated more easily and surely than prior art systems, and a powder coating system which has a high effective rate of operation by utilizing the powder supply system. The pneumatically fed powder supply system comprises a powder tank, a powder supply apparatus detachably connected to the powder tank, and means for cleaning the powder supply apparatus. The powder coating system employs the pneumatically fed powder supply system.

Abstract: In order to provide an improved pipe washing apparatus guaranteed to be free of the wearing and/or breaking of nozzle shaft, it is provided with a nozzle support to be fixed to the end of a washing hose, which is to be inserted in a pipe to be washed inside, a cylindrical nozzle rotatably fixed to the nozzle support and a nozzle guide member fixed to the forward end of the nozzle for guiding the nozzle along the inner circumference of the pipe. The nozzle support has a longitudinal water channel made along its center axis and closed at its forward end, and lateral jet outlets extending from the longitudinal water channel to open on the cylindrical circumference of the nozzle support.

Abstract: An integrated system for coating an inner wall surface of a tube is disclosed. A hose has an applicator nozzle attached at a forward end thereof. A payout guide is drivingly engaged with the hose to drive and to remove the hose and the applicator nozzle into and through and from the tube, respectively. A fluid supply system is in fluid communication with the hose, and includes a fluid source supplying a fluid to the hose and applicator nozzle, and a supply valve interposed between the fluid source and the applicator nozzle for selectively applying the supplied fluid to the applicator nozzle. A control system is connected to the payout guide to control the driving and removing of the hose and to the supply valve to control application of the supplied fluid to the applicator nozzle.

Abstract: A conduit cleaning jetting pig is provided, the pig having a central axis that can be aligned with a central axis of a conduit to be cleaned, the pig including: a seal means having an upstream side and a downstream side, the seal means effective to prevent a significant flow of fluids from the upstream side of the pig to the downstream side of the pig between the pig and the inside of the conduit when a differential pressure exists between the upstream side and the downstream side of the pig; a rotating element rotatably connected to the downstream side of the seal means; a plurality of nozzles connected to the rotating element each nozzle defining a flowpath through the nozzle for fluids to pass through each of the nozzles, and the flowpath in communication with a channel from the upstream side of the seal means to the flowpath with the flowpath through the nozzle aligned in part tangential to a cylinder around the central axis of the pig and aligned in part toward the inside wall of the conduit; and a frict

Abstract: The cleaning apparatus is for cleaning pipes and ducts and comprises a housing having a first end and a second end. A connection for a pressure medium is disposed at the first end and a cleaning member is disposed at the second end of the housing. A chamber is defined in the housing and contains the pressure medium. A drive member is located inside the housing and adapted to rotate the cleaning member. Nozzle openings are defined by the housing and connected with the chamber and a surface of the housing to permit the housing to propel along a duct. A shaft having one end secured to the drive member is rotatably disposed in the housing and adapted to carry the cleaning member at an end that is opposite to the end secured to the drive member.

Abstract: A system for cleaning both the box and pin ends of tubular members, recovery of the fluid residue, filtering of the residue to recover the heavy solids, and disposing of each of the components of the residue in an environmentally safe manner. A first housing positionable over the end of a tubular member; a first bladder expandable from the housing to seal around the outer wall of the tubular member; a plurality of jets positioned adjacent the threads of the tubular member, so that as the jets are rotated around the threads, a high pressure fluid spray cleans the threads of the member; a second bladder expandable from the end of the jetting means for sealing the inner bore of the member beyond the threads, so that all fluid jetted into the housing from the jetting nozzles is captured within the housing and flows from the housing, and no fluid flows beyond the threaded pipe end either along the inner or outer walls of the tubular member.

Abstract: An improved power-driven brush assembly is disclosed, useful for cleaning the interior surfaces of ducts, pipes, and other similar structures. The apparatus comprises a cable having a brush at one end, and a motor at the other end for spinning the cable and the brush. A casing surrounds the cable, allowing a fluid to be injected through the casing to the brush. A fluid directing assembly at the end of the casing near the brush allows fluid to the be injected into the duct in a desired direction, to flush particulate matter from the vicinity of the brush.

Abstract: A nozzle system comprising a nozzle connected to a first supply conduit having an enclosed second supply conduit. The first supply conduit at the proximal end is connected to a first source of medium while the second supply conduit at the proximal end is connected to a second source of medium. The first supply conduit at the distal end is connected to nozzle openings that discharges first medium which propels said nozzle system through a pipe line and removes debris from said pipe line. The second supply conduit at the distal end is connected to a nozzle sprayer that discharges a second medium directed forward from the first supply conduit.

Abstract: A support for a garbage chute cleaning apparatus includes a cart having ground engaging wheels. Outrigger legs are provided for anchoring and providing lateral stability to the cart. A rotatably mounted reel is provided having a length of line mounted on the cart. Two telescopically extendible vertical support columns are mounted on the cart. A telescopically extendible horizontal cross-beam extends between the two vertical support columns. The horizontal cross-beam has a remote end with a line guide which receives line from the rotatably mounted reel. A Counterweight is mounted to the cart opposite the remote end of the horizontal cross-beam. This provides a counterbalance to a garbage chute cleaning apparatus supported from the line at the remote end of the horizontal cross-beam.

Abstract: An apparatus and method are disclosed for producing and dispersing herbicidal foam within a sewer line in such a manner as to apply the foam to either the entire interior surface or a specific or a plurality of specific areas within a generally cylindrical line.

Abstract: A sewer cleaning nozzle is provided for attachment to a hose for supplying cleaning fluid through the hose to a number of nozzle tips carried on the nozzle body for providing a sweeping action for material collected in the sewer pipe as the nozzle is pulled forwardly by pulling on the supply hose. The nozzle body includes a central pipe portion and a rearwardly mounted chamber portion attached to the pipe portion. The chamber portion defines a radial front face carrying a plurality of nozzle tips at angularly spaced positions. A conical deflector within the chamber deflects cleaning water along the pipe portion outwardly of the chamber to a curved wall portion of the chamber causing the water to move smoothly around the chamber forwardly to the nozzle tips. Further nozzle tips are provided on the pipe portion having a reduced outward angle relative to the nozzle tips on the front face.

Abstract: Apparatus is provided for thawing frozen pipes or for cleaning pipes, for use with a source of warm thawing water or cleaning water, a source of compressed air, and a flexible tube suitable for being inserted into the end of a pipe through guide means to feed the water into the pipe while the tube is being advanced into the pipe. The apparatus comprises a valved water conduit having an inlet for connection to the source of water and an outlet for connection to the flexible tube, this conduit having a movable valve. A compressed air powered drive, usually a rotator, connectable to said source of compressed air, is arranged to move the valve in such manner as to continually interrupt the flow of water in the conduit and so to produce a pulsating flow of water in the tube for thawing ice in the frozen pipe or cleaning the pipe. The rotator for the valve may be a compressed air driven ratchet drive. A valve may also be provided for injecting air into the pipe to clear out ice or dirt.

Abstract: A cleaning apparatus (10) for removing residual paint from flow passages in a spray painting system comprises a flow passage (12) for conveying paint to a spraying device (14) and a manifold (16) defining a plurality of individual inlets (17) into the flow passage. At least two different paints are supplied to the manifold through the inlets. A solvent supplier (20) supplies a variable pressure and variable volume flow of solvent to the manifold (16) during a cleaning cycle to remove residual paint from the manifold and the flow passage (12) after a completed painting cycle to prepare for a new cycle. The assembly is characterized by including a constant volume flow controller (22) for maintaining a constant volume flow of solvent upstream of the manifold (16) independent of solvent pressure fluctuations.

Abstract: A method of cleaning in a pipe which has fouling material on the interior so that the bond with the fouling material is broken by first filling the pipe with liquid, applying pressure pulsations to the liquid to the extent that a standing wave is formed in the pipe and the incompressible liquid therein, and cavitation is initiated within the standing wave in the pipe so that the pipe is cleaned on the formation of induced shock waves occurring upon collapse of microscopic bubbles resulting from cavitation and subsequent collapse.

Abstract: A method of in-service cleaning an operating column by inserting into the column a lance through which a compatible liquid is dispensed at a pressure of at least about 5000 psig. Also disclosed is apparatus which comprises a column through which a fluid can pass, nozzles mounted on the outside of the column, where each nozzle comprises a flange welded to the column and a valve bolted to the flange, a lance which can be inserted through the nozzles into the column and means for dispensing a liquid through the lance at a pressure of at least about 5000 psig.

Abstract: The device serves for eliminating deposits (52) in ventilation ducts (14) in the stationary or non-stationary operating mode. The cleaning medium is a fluid sprayed out under high pressure from a spray head (3). The spray head (3) is carried by a supply pipe (2), through which lead the drive shaft coming from a motor (1) and a fluid channel. In the non-stationary operating mode, the device is integrated into a slide (15) which is pulled through the ventilation duct (14). The slide (15) is introduced into the ventilation duct (14) through an inspection port sealable by means of an inspection cover. Ventilation ducts (14) extending horizontally, vertically and obliquely can be treated. In the stationary operating mode for cleaning an inlet or outlet, a bend or a branch and, for example, also a vapour extractor, the device is held without a slide (15) in a supporting cover which is inserted into the inspection port.

Abstract: A mobile rotator jet sewer cleaner vehicle for cleaning a sewer line by fluid pressure, the vehicle having a fluid supply for delivering the fluid under pressure to a hose wound on a reel assembly which can be selectively wound or unwound in a vertical direction, wherein a bearing assembly movable in a horizontal direction is secured on a platform and a reel assembly is mounted on and movable with the bearing assembly. A control for selectively actuating winding and unwinding the hose on the reel assembly is provided, and this control, which may also include other instruments and controls for operating the sewer cleaner, is movable with the bearing and reel assembly. In another embodiment of the invention, the platform telescopes into and away from a recess in the vehicle chassis, so that the reel and bearing assemblies are extended from the vehicle when in use, but may be retracted into the recess when desired, and in such event the retracted jet sewer cleaner may be enclosed within the vehicle.

Abstract: A method and apparatus for dissipating surcharge waste material clogging manholes includes a sewage surcharge dissipation head. The sewage surcharge dissipation head is connected through a high pressure hose to a source of high pressure water. The sewage surcharge dissipation head is lowered into a clogged manhole, and high pressure water is pumped through the high pressure hose to the sewage surcharge dissipation head. The high pressure water exits the sewage surcharge dissipation head through multiple water jet nozzles positioned around the circumference of the head and set at 35 degrees to the longitudinal axis of the head. The resultant water jet streams cut through, stir and dilute the surcharge clogging the manhole. The sewage surcharge dissipation head includes a means for connecting a pole to control the position and motion of the sewage surcharge dissipation head.

Abstract: A cleaning module for cleaning sewer pipes including sewer liner, and other types of conduits. The cleaning module may comprise a single hydraulically propelled unit, wedge-shaped and selected to fit pipe size. Pipeline walls are scoured by the slurry agitation produced by hydraulic pressure jets in the module. Alternatively, the module is assembled in situ and the relative size of components is selected depending upon the diameter of the pipeline. The module may comprise a front unit and rear unit or a frame assembly and a drive assembly. The modules contain a motor, preferably a hydraulic motor. The motor drives flails, thereby disintegrating solid waste or generating and propelling a sludge slurry. The slurry scours the pipeline walls by cavitation and abrasion action. Also disclosed are systems for cleaning a sewage line section and methods of their use.

Abstract: A system for determining the cleanliness of a boiler having a plurality of tube banks by obtaining a temperature profile of the boiler heat transfer surfaces includes extending an extension arm, such as a soot blower lance, near the tube banks of the boiler. A separate temperature reading is taken at intervals along the length of the extension arm by utilizing either a plurality of infrared non-contact temperature sensors or a plurality of optical fibers. Each separate temperature reading enables a temperature profile to be determined along the length of the extension arm which, in turn, allows deposit accumulation on the tube banks to be determined.

Abstract: A method of removing undesired coatings from the interior surface of tubes includes inserting a fluid-dynamically unstable impact head into the tube, providing or maintaining fluid flow through the tube and altering the length of a tether attached to the impact head to move the impact head along the tube. As a result of the fluid flow, the impact head moves chaotically within the tube, impacting the interior surface of the tube and removing undesired coatings therefrom. An apparatus for accomplishing the method preferably includes an impact head, a flexible retaining line and a carriage moveable within the tube, the carriage aiding in the centering of the retaining line.

Abstract: A hand-held spraying apparatus for cleaning a holding tank in vehicles having a commode such as recreational vehicles. The spraying apparatus comprises a conduit having a valve for starting, stopping or regulating fluid flow through the apparatus; a viewport connected to the distal end of the conduit; an extended tube having first and second ends with the first end connected to the viewport and an elbow positioned near the second end; and a spray nozzle positioned at the second end of the extended tube and having openings positioned radially about the shaft portion of the spray nozzle so as to produce a circumferential spray pattern. A method for cleaning a holding tank is also disclosed.

Abstract: A gutter washer comprising a wheel-shaped guide disposed rotatably on a cylindrical section of a nozzle is adapted to run on a roof gutter rim. The guide comprises a guide rim projecting radially from one end of a guide hub member, which rotates on the nozzle cylindrical section, and a plurality of lugs jutting radially from an opposite end of the hub member. Thus, the hub member becomes a circumferential track with the guide lugs running inside and the guide rim running outside of the gutter rim. When a gutter spike is encountered, the guide lugs step over it while keeping at least 2 lugs below the rim which is tangent to the circumferential track. A rigid tube is attached to the nozzle near the guide rim at a first tube end; the second tube end is adapted for connection of a garden water hose.

Abstract: A process for cleaning pipelines and especially ventilation pipes and ducts in buildings, and includes a nozzle connected to a supply conduit through which a pressurized medium can flow. The arrangement includes a nozzle opening directed forward away from the supply conduit. The nozzle opening is in the form of a large continuous annular gap which extends along the periphery of the nozzle and is connected to the supply conduit and the source of a pressurized medium. The gap directs the medium toward the inner walls of the pipe or duct and effects a cleaning of the inner walls. The nozzle is moved into the pipe or duct by moving a rigid supply conduit.

Abstract: A drain cleaning system which utilizes a plumbing cable and nozzle assembly. A fluid-conveying hose is incorporated within a plumbing cable and a nozzle is affixed to the distal end of the cable and in communication with the hose. The nozzle includes a body having a rounded radius tip and a rotatably mounted ring having a plurality of radial jet passages formed therein. The ring and the body cooperatively define an annular passage therebetween. Pressurized water passes through the nozzle body and into the annular passage to produce a water bearing. The water is then discharged through the jet passages in the ring, causing the ring to rotate about the water bearing to produce a rotating spray of pressurized water. The rounded tip and ring are oriented co-axially with the tip being wider than the ring to prevent the jet passages from clogging when the nozzle is used to penetrate a clog in a pipe.

Abstract: The Applicant's present invention is drawn to an improved nozzle for a miniaturized sludge lance intended to be used with an articulated sludge lancing systems to clean narrow tube lanes. The improved nozzle has an internal flow straightener which minimizes turbulence within the nozzle and allows a pair of oppositely located nozzles to be fitted within the miniature lance while producing the output cleaning power of nozzles requiring dimensioning that would not fit within the confines of the miniature lance assembly.

Abstract: A lance tube for a sootblower device for cleaning internal surfaces of large scale combustion devices. The lance tube includes two sets of nozzles for ejecting fluid cleaning media. A readily accessible fluid flow restriction device is positioned between the two sets of nozzles and accommodates interchangeable plug elements providing different fluid flow restrictions. One set of nozzles is optimized for steam as the cleaning media whereas the other is designed for ejecting water. This lance tube configuration is especially adapted for selectively ejecting steam or water blowing medium as cleaning requirements dictate.

Abstract: An apparatus and method for cleaning the tubes of a heat exchanger of a type having at least one header that defines a manifold chamber having a plurality of tubes extending therefrom, the tubes and the header defining tube openings to provide open communication between the tubes and the manifold chamber, the tube openings defining a peripheral seating surface, there being bores in the header, respective ones of which are in register with respective ones of the tube openings, the apparatus comprising a tubular member having a first end and a second end, the tubular member being dimensioned such that the first end can be received through at least one of the bores, a force transmitting lever assembly connected to the tubular member and operatively connected to the header whereby the tubular member can be urged toward the seating surface of a tube opening in register with a bore through which the tubular member is received, there being a seal formed between the tubular member and the seating surface.

Abstract: A pipe and tube cleaning system, particularly useful for cleaning scale from pipes and tubes used in oil and gas production operations and containing naturally occurring radioactive materials in the scale, includes an elongated closable tub for supporting a section of pipe or tube for combined hydraulic jet blast and mechanical cutting and cleaning action by a lance insertable within the pipe to remove scale from the interior of the pipe. A slurry of particulate material removed from the pipe and the cleaning liquid (water) is collected in the tub and discharged to a particle size reduction and filtering system which reduces the particle size of the material to form a slurry of very fine particles which may be disposed of through an injection well. Some of the slurry may be returned to the system for use as cleaning liquid. Pipe is loaded into and removed from the tub by a pipe handling mechanism including retractable supports with ramp surfaces which position the pipe for movement into and out of the tub.

Abstract: A bladed cylindrical member with high pressure fluid jet nozzles cuts and sweeps aquatic foreign matter from the inside surface of underwater pipes. The method for removing the foreign matter includes reciprocally pulling the device through the pipe and injecting high pressure air into a containment area to force any extricated foreign matter to the surface.

Abstract: A cleaning module for cleaning sewer pipes including sewer liner, and other types of conduits. The cleaning module may comprise a single hydraulically propelled unit, wedge-shaped and selected to fit pipe size. Pipeline walls are scoured by the slurry agitation produced by hydraulic pressure jets in the module. Alternatively, the module is assembled in situ and the relative size of components is selected depending upon the diameter of the pipeline. The module may comprise a front unit and rear unit or a frame assembly and a drive assembly. The modules contain a motor, preferably a hydraulic motor. The motor drives flails, thereby disintegrating solid waste or generating and propelling a sludge slurry. The slurry scours the pipeline walls by cavitation and abrasion action. Also disclosed are systems for cleaning a sewage line section and methods of their use.

Abstract: The improved drain plug device is formed in accordance with the present method. The device includes an elongated, hollow, flexible, resilient, unitary, self-supporting tubular member having a central passageway extending all the way therethrough to the exits in the opposite ends of the member. The member has a rear bulbous inlet portion, a middle very flexible portion to allow the member to bend around curves in drain lines, and a front bulbous outlet portion. The inlet and outlet portions have the same sidewall thickness while that of the middle portion is preferably somewhat thicker. Preferably, the middle portion is narrower in diameter than the other portions of the member. The outlet portion has a higher Shore hardness than the inlet portion and therefore expands radially under internal fluid pressure more slowly than the inlet portion but collapses, after removal of such pressure, at a faster rate, thus assuring that water in the tubular member during use thereof will not back up and out the inlet exit.

Abstract: A method for cleaning tubes and heat exchangers as set forth. The method and apparatus involve an elongate lance which is mounted to move in an X and Y pattern to align with a set of tubes. Each tube is cleaned by positioning the lance at the end of each tube to be cleaned. A plug is placed in the tube to be cleaned to form a standing column for water. By means of a valve control system, the standing column of water is cycled from low to high pressure by switching the flow of water. In this switched mode, water is delivered under pressure into the column. The lance tip functions in conjunction with an orifice upstream of the lance tip to form a shock wave of energy radiating along the standing column of water from the orifice into the tube to be cleaned. The addition of water to the tube ultimately moves the plug along the length of the tube. It is one theory of operation of the present disclosure that the column of water exposed to shock waves is used in cleaning, i.e.

Abstract: New nozzles and methods for cleaning debris from drain pipes are disclosed. In one embodiment, the present nozzle comprises a nozzle body including a peripheral sidewall having a plurality of spaced apart peripheral through holes positioned to cause fluid from the interior space defined by the nozzle body to pass through the peripheral through holes in a direction substantially perpendicular to the longitudinal axis of the nozzle body. In addition, the nozzle body preferably includes a distal end wall having at least one longitudinal through hole positioned to cause fluid from the internal space to flow through the longitudinal through hole in a direction substantially parallel to the longitudinal axis of the nozzle body.

Abstract: An apparatus for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having a nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.

Abstract: A cleaning device for a liquid treatment plant comprises a tank and also a pressure line for the supply of the liquid to the tank. The pressure line has a nozzle which can be moved between a position in which it is connected to the filling aperture of the tank and a position not connected to the filling aperture, and also comprises means for periodic cleaning of the pressure line. In order to avoid mistakes in the connection, a return line for returning a cleaning fluid supplied through the pressure line is provided with a connecting piece which can be connected on the one hand to the nozzle of the pressure line removed from the filling aperture, in order to form a flow connection between pressure line and return line, and which can be connected on the other hand to the filling aperture, in order to shut it off.

Abstract: A device for closing and sealing a lead-through (1), comprising means intended to open, clean and again close the lead-through. A cone (2) with a head (21), a rod-shaped part (22) and a sealing surface (23) arranged between said head and said rod-shaped part is arranged with the head inserted into the lead-through. In the end of the cone opposite to the head, the cone is provided with means (24) for connecting the cone to a flush pipe (5) arranged in the form of an extension of the rod-shaped part of the cone. An annular flange (3) is attached to the lead-through and around said rod-shaped cone, inserted into the lead-through, to retain the head of the cone in the lead-through. A sealing surface (31), arranged on the annular flange in the form of a seat, is adapted to correspond to and make contact with the sealing surface of the cone to close and seal the lead-through.

Abstract: The invention relates to a lance device comprising a frame, a drum mounted rotatably on the frame, at least one hose arranged on the drum, containing means provided with a passage for containing the hose while lying on the drum, connecting means for connecting a source of liquid under high pressure to an end of the hose joined to the drum and drive means for driving the drum in rotation. The containing means comprise an endless flexible member and guide means therefor which guide the flexible member in a path from one side of the passage round the drum and lying thereagainst to the other side of the passage and therefrom at a distance from the drum in opposite direction back to the one side of the passage.