|Publication number||US2735794 A|
|Publication date||21 Feb 1956|
|Filing date||8 Jul 1952|
|Publication number||US 2735794 A, US 2735794A, US-A-2735794, US2735794 A, US2735794A|
|Inventors||Clarence B; Tletcher|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (60), Classifications (37)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Feb. 21, 1956 c. B. FLETCHER METHOD OF CLEANING AND STERILIZING TUBULAR MEMBERS Filed July 8, 1952 2 Sheets-Sheet 1 310cm 1' C'Zarenceflflel'chler 25) (Ittorneg Feb. 21, 1956 c. BWPLETCHER I 2,735,794
METHOD OF CLEANING AND STERILIZING TUBULAR MEMBERS 2-15 Gttorneg United States Patent METHOD on CLEANING AND STERILlZING TUBULAR MEMBERS Y 'The ii ventionrelates to methods of cleaning and sterilizparticularly hollow articles, such as tubes and containers, and has for its object 'to "provide a method wherein foreign matter is dislodged from the wall of the tube or container, and at the same time the wall of the tube or container is sterilized by means of liquid, for instance water, unset high pressure, and with which liquid air is mixed before the ivater projection from a nozzle, said mixture of water and air forming the sterilizing medium.
A further object is to provide a method of cleaning and sterilizing the inner periphery of a tube by means of a nozzle "carried by a flexible tube or hose on which the nozzle is mounted, said flexible hose conveying water, under pressure, to the nozzle, and to add air to the nozzle and Water within the nozzle for projecting a sterilized stream of'mixed water and air against the interior of the ass.
A further object is to provide a tube sterilizing device comprising a flexible hose passing through the tube and terminating in a spray nozzle, projecting streams of mixed air and water from the nozzle against the wall of the tube, said nozzle being axially centered within the tube by the projected fluid therefrom.
A further object is to project the sprayed material from the nozzle in a rearwardly and outwardly extending direction at angles between tangential and radial position, or in directions other than radial.
A further object is to provide a sterilizing nozzle through which water, under high pressure, is forced, discharge ports in the nozzle, and through which ports the water is forced to air mixing chambers, said air mixing chambers and ports inclining rearwardly and outwardly at angles other than radial, and air intake ports extending between the mixing chambers and the forward end of the nozzle.
A further object is to provide a removable cap on the forward end of the nozzle and having a flexible tube leading to a source of sterilizing liquid supply, and through which cap and flexible tube a sterilizing liquid is sucked and mixed with the sprayed waters in the mixing chambers for a final chemical washing, which is a requirement in some States by the laws now in force.
With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.
In the drawings:
Figure l is a vertical longitudinal sectional view through a tubular member, showing the nozzle and liquid supply hose carried by the nozzle, and the nozzle centered incident to projected liquid therefrom.
Figure 2 is an enlarged front elevation of the nozzle.
Figure 3 is a vertical longitudinal sectional view through the nozzle, taken on line 3-3 of Figure 2.
2,7353% Patented Feb. 21, 1956 Figure 4 is a vertical transverse sectional View through the nozzle taken on line 4-4 of Figure 3.
Figure 5 is a view similar to Figure 1, showing the chemical wash or sterilizing attachment applied to the nozzle.
Figure 6 is a view similar to Figure 3, showing the after wash cap applied thereto.
Figure 7 is a front elevation of the after wash cap.
Figure 8 is a side elevation of the nozzle, partly in section showing a swivel connection between the nozzle and solution supply pipe.
Referring to the drawings, the numeral 1 designates a tubular conduit to be cleaned. These conduits are used to a great extent in food preparation, and in milk treating machines and the like. It will be understood applicants method may be used in cleaning tubes or conduits of any type.
In food processing plants the tubes must be sterilized from time to time and cleaned in a manner whereby coatings of foreign matter 2 are dislodged. This has heretofore been a laborious operation, as well as a slow one, and applicants method and apparatus is designed not only to remove the deposit or coatings 2, but to simultaneously sterilize the wall of the tube, and preferably by means of water, under high pressure, mixed with the air in fine streams, in a manner whereby the coatings 2 are not only dislodged, but at the same time the sterilizing effect is obtained, incident to the mixing of air with the water. The water may be cold or hot as desired.
To accomplish the cleaning and sterilizing result, Water, under high pressure, is forced from a pump 1a, through a flexible hose 3, the water pressure can be from to 4,600 pounds, but 600 pound pressure'gives good results, and the sterilizing tests have been found to be far superior to ordinary brushing, steaming and other type of cleaning now used. The hose 3 is provided with a conventional form of coupling 4, on which coupling the nozzle head 5 is threaded at 6. The outer end of the nozzle head is preferably frusto conically shaped as shown. The water, under high pressure, passes in the direction of the arrow a, Figure 3, and is discharged outwardly and rearwardly at angles, other than radial, through the discharge ports 7. The discharge ports 7 discharge into enlarged mixing chambers 8 in axial relation to the ports 7, and air is supplied to the enlarged mixing chambers 8 through forwardly extending relatively small air supply ports 9, to which ports air is supplied from a position in advance of the nozzle. It has been found that, by mixing the air and water in the chambers 8, the projection of the spray, under high pressure, against the inner wall of the tubular member 1, there is a sterilizing effect and the sterile tests are high. By projecting the sprays rearwardly and in a direction other than radial, there is a whirling of the water, as shown in Figure 1, which washes the dislodged material 2, which has been previously dislodged at 10, from the tube. This high pressure easily cuts the material 2 from the tube.
The forward end of the nozzle is preferably provided with a circumferential groove 11 to facilitate the drilling of the air ports 9. In the use of the device, the flexible member 3, with its nozzle, is passed into the tube in the direction of the arrow (1, as the liquid and mixed air leaves the nozzle, as shown in Figures 1 and 2, the liquid impinges against the inner periphery of the tube, and this action causes the nozzle to assume a position on the axis of the tube, as shown in Figure 1, hence it will be seen that the spraying operation is uniform on all parts of the inner periphery of the tube. This is a decided advantage in cleaning long tubes, as the operator will not have to center any cleaning hose of ordinary type, and at the same time uncleaned spots are obviated. It will be noted that the discharge ports are uniformly distributed entirely around the nozzle, hence it will be seen that the spraying operation will be uniform, as to the amount of water mixed with the air projected entirely around the circumference of the nozzle, therefore there will be a uniform cleaning and sterilizing throughout the length of the tube.
In a few States there are laws still in force requiring a chemical washing, particularly a final washing, and to comply with these laws, an attachment is provided for a final chemical treatment of the tube, as shown in Figures 5 to 7 inclusive.
The chemical sterilizing is accomplished by threading at 12 on the forward end of the nozzle a dome shaped cap 13 having a liquid supply tube 14. The liquid supply tube 14 is provided with a discharge port 15 on the axis of the nozzle, and with a chemical supply tube 16. Flexible tube 16 leads to a chemical supply tank 17. It will be seen that as the air is sucked from the chamber 18 of the cap 13, the liquid chemical will hit the apex of the nozzle, or will be equally distributed towards the ports 9. During an ordinary spraying operation, the intake end 19 of the tube 16 is out of the tank 17, hence the spraying action for sterilizing purposes with air and water progresses as shown in Figure 1. After the sterilizing and cleaning by air and water, the end 19 of the tube is placed in the tank 17 for a final chemical sterilization of the tube to comply with the laws above referred to.
Referring to Figure 8 wherein a modification is shown, the operation of the device is the same as in Figure 5 with the exception the cleaning solution supply pipe 16 has a swivel connection 20 to the forward end of the nozzle so the solution supply pipe may assume various positions in relation to the nozzle and twisting of the supply pipe around the air supply pipe will be obviated.
The invention having been set forth what is claimed as new and useful is:
1. A method of cleaning and sterilizing the bore of a tubular member comprising the steps of passing a liquid supply pipe axially through the bore of the tubular member, ejecting liquid under high pressure from one end of the pipe through a plurality of passages in a spraying nozzle in the form of projecting jets extending in a circumferentially spaced uniform fashion in a common circle around the nozzle and issuing rearwardly and tangentially from the passages and projecting against the surface of the bore at angles less than right angles, drawing air from the bore of the tubular member in front of the nozzle into the nozzle passages and mixing the air with the liquid in the passages in the nozzle.
2. A method of cleaning and sterilizing the bore of a tubular member comprising axially passing a liquid supply pipe through the bore and passing liquid at high pressure through the pipe, ejecting the liquid through a plurality of passages in a spray nozzle, rearwardly toward the surface of the bore, drawing a second fluid from a volume in front of the nozzle into the nozzle passages and mixing said second fluid with the liquid in the passages in the nozzle.
References Cited in the file of this patent UNITED STATES PATENTS 558,992 Silver Apr. 28, 1896 1,274,931 Otterson Aug. 6, 1918 1,438,834 Keil Dec. 12, 1922 1,796,878 Watson Mar. 17, 1931 2,210,180 Richardson Aug. 6, 1940 2,245,554 Court June 17, 1941 2,250,525 Donnellan July 29, 1941 2,526,265 Nulph Oct. 17, 1950
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US558992 *||16 Aug 1895||28 Apr 1896||Device for thawing frozen pipes|
|US1274931 *||8 Dec 1917||6 Aug 1918||George W Otterson||Method and apparatus for cleaning sewer-conduits.|
|US1438834 *||19 Apr 1921||12 Dec 1922||Ernst Keil||Spark-plug cleaner|
|US1796878 *||27 Jul 1927||17 Mar 1931||Pure Oil Co||Method for removing carbon deposit from metal surfaces|
|US2210180 *||22 Jul 1939||6 Aug 1940||Elmore Richardson David||Sprinkling means|
|US2245554 *||21 Feb 1938||17 Jun 1941||Shell Dev||Hydraulic disruption of solids|
|US2250525 *||21 May 1940||29 Jul 1941||Donnellan James S||Sprinkler|
|US2526265 *||23 Jun 1947||17 Oct 1950||Nulph Chauncey J||Spray head|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3032044 *||12 May 1958||1 May 1962||Pansini Andrew L||Automatic swimming pool cleaner|
|US3080265 *||26 Oct 1960||5 Mar 1963||Oskar Maasberg Fa||Process and apparatus for cleaning waste-disposal systems|
|US3111131 *||1 Mar 1961||19 Nov 1963||Barry Wehmiller Mach Co||Bottle washing apparatus|
|US3120346 *||31 Oct 1962||4 Feb 1964||American Mach & Foundry||Rotary spray devices|
|US3122325 *||21 May 1962||25 Feb 1964||R E Chapin Mfg Works Inc||Garden chemical sprayer|
|US3138167 *||18 Jun 1963||23 Jun 1964||Sprout Waldron & Co Inc||Mixer for feeds and the like|
|US3208460 *||14 May 1964||28 Sep 1965||Heinicke Instr Co||Washing apparatus for cylindrical pipes|
|US3215560 *||27 Sep 1963||2 Nov 1965||Kredit William||Method of cleaning hot air furnaces and duct systems associated therewith|
|US3321184 *||3 Jan 1966||23 May 1967||Goss John B||Self-propelling hose-nozzle assembly and method of using same|
|US3535161 *||27 Jan 1969||20 Oct 1970||Gutrich Robert J||Clearing sewer lines and the like|
|US3597930 *||4 Apr 1969||10 Aug 1971||Brown & Root||Method and apparatus for reinforcing in situ in pile casing|
|US3690560 *||22 Apr 1971||12 Sep 1972||John A Boyd||Chute sanitizer and fire extinguisher|
|US3744723 *||5 Jun 1969||10 Jul 1973||D Davis||Pipe cleaning nozzle|
|US3814330 *||1 Mar 1973||4 Jun 1974||Mcneil Corp||Nozzle|
|US4110092 *||26 Jan 1977||29 Aug 1978||Nippon Kokan Kabushiki Kaisha||Method of apparatus for cooling inner surface of metal pipe|
|US4137928 *||9 Sep 1977||6 Feb 1979||Naylor Industries, Inc.||Apparatus for cleaning the interior of tubes|
|US4160457 *||31 Oct 1977||10 Jul 1979||Shell Oil Company||Tool joint cleaner|
|US4225362 *||18 Jan 1979||30 Sep 1980||Richard R. Paseman||Method for cleaning the interior of tubes|
|US4344570 *||11 Aug 1980||17 Aug 1982||Paseman Richard R||Apparatus for cleaning the interior of tubes|
|US4442899 *||6 Jan 1982||17 Apr 1984||Downhole Services, Inc.||Hydraulic jet well cleaning assembly using a non-rotating tubing string|
|US4518041 *||22 Mar 1982||21 May 1985||Zublin Casper W||Hydraulic jet well cleaning assembly using a non-rotating tubing string|
|US4569420 *||30 Jan 1985||11 Feb 1986||Pickett Wiley J||Lubricating method and system for use in cable pulling|
|US4691723 *||9 May 1985||8 Sep 1987||Ernst Schmutz Gmbh||Apparatus for cleaning radioactive tube banks|
|US4718142 *||31 Jul 1986||12 Jan 1988||D.W. Tool, Inc.||Gas driven pipe cleaner and reel|
|US4764180 *||22 Jan 1987||16 Aug 1988||The Pullman Peabody Company||Method of manufacturing jet nozzles|
|US4819314 *||11 Jul 1988||11 Apr 1989||The Pullman Peabody Company||Jet nozzles|
|US4909325 *||9 Feb 1989||20 Mar 1990||Baker Hughes Incorporated||Horizontal well turbulizer and method|
|US4967841 *||9 Feb 1989||6 Nov 1990||Baker Hughes Incorporated||Horizontal well circulation tool|
|US5086842 *||7 Sep 1990||11 Feb 1992||Institut Francais Du Petrole||Device and installation for the cleaning of drains, particularly in a petroleum production well|
|US5314545 *||14 May 1992||24 May 1994||Folts Michael E||Method of cleaning an internal access opening by a nozzle with wearing contact|
|US5323797 *||7 Aug 1992||28 Jun 1994||Rankin George J||Rotating hose apparatus|
|US5323800 *||27 Oct 1993||28 Jun 1994||Vollweiler Timothy J||Washer for a portable self-contained ground water testing assembly|
|US5402548 *||31 Mar 1993||4 Apr 1995||Adair; Michael A.||Duct cleaning apparatus|
|US5406666 *||7 Mar 1994||18 Apr 1995||The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration||Water driven turbine/brush pipe cleaner|
|US5516043 *||30 Jun 1994||14 May 1996||Misonix Inc.||Ultrasonic atomizing device|
|US5588171 *||24 Mar 1995||31 Dec 1996||Pettibone Corporation||Drain line cleaning apparatus|
|US5617609 *||20 Jun 1995||8 Apr 1997||Bently; John F.||Air nozzle/flexible whip cleaning means for ductwork|
|US5942044 *||17 Apr 1996||24 Aug 1999||Piguillet & Zonen V.O.F.||Method and device for treating ducts of the type used for ventilation|
|US5988188 *||31 Dec 1997||23 Nov 1999||Jir, Inc.||Method and apparatus to remove obstructions from sewers without cutters or chemicals|
|US6199566 *||29 Apr 1999||13 Mar 2001||Michael J Gazewood||Apparatus for jetting a fluid|
|US6375757 *||18 Jan 2001||23 Apr 2002||Thru-Tubing Technology, Inc.||Method for jetting a fluid|
|US7011158 *||5 Sep 2003||14 Mar 2006||Jerry Wayne Noles, Jr., legal representative||Method and apparatus for well bore cleaning|
|US9359751||23 Jul 2015||7 Jun 2016||Boemar Inc.||Plumbing trap flushing device|
|US20050051335 *||5 Sep 2003||10 Mar 2005||Davis Jerry Lynn||Method and apparatus for well bore cleaning|
|US20060086507 *||26 Oct 2004||27 Apr 2006||Halliburton Energy Services, Inc.||Wellbore cleanout tool and method|
|US20080267688 *||29 Nov 2006||30 Oct 2008||Bat Holding Aps||Apparatus and a Method For Cleaning a Channel in a Medical Instrument|
|US20110179560 *||28 Jan 2010||28 Jul 2011||Bart Donald Beaumont||Plumbing trap flushing device|
|USRE28397 *||6 Mar 1974||22 Apr 1975||Chute sanitizer and fire extinguisher|
|DE3418835A1 *||21 May 1984||21 Nov 1985||Schmutz Gmbh Ernst||Vorrichtung zum reinigen radioaktiv kontaminierter rohrbuendel|
|DE4207836C2 *||12 Mar 1992||20 Apr 2000||Kmg Kanal Mueller Gruppe Mitte||Vorrichtung zum Reinigen von Klar- oder Abwasserkanälen oder verlegten Rohrleitungen|
|DE4416721A1 *||11 May 1994||16 Nov 1995||Preussag Rohrsanierung Gmbh||Einrichtung und Verfahren zur Reinigung und Entschichtung von erdverlegten Rohrleitungen|
|DE9421130U1 *||11 May 1994||25 Jan 1996||Preussag Rohrsanierung Gmbh||Einrichtung zur Reinigung und Entschichtung von erdverlegten Rohrleitungen, wie Gas-, Wasser- und Abwasserleitungen|
|EP0162309A2 *||22 Apr 1985||27 Nov 1985||Ernst Schmutz GmbH||Cleaning device of a radioactive contaminated tube bundle|
|EP0162309A3 *||22 Apr 1985||26 Nov 1986||Ernst Schmutz Gmbh||Cleaning device of a radioactive contaminated tube bundle|
|EP1256761A2 *||26 Apr 2002||13 Nov 2002||Clyde Bergemann GmbH||Process and apparatus for cleaning incineration boilers during operation|
|EP1291598A1 *||5 Sep 2001||12 Mar 2003||Degn Design||Apparatus for cleaning the open draft boiler surfaces in a combustion or incineration plant|
|EP1944066A2 *||22 Dec 2000||16 Jul 2008||Marioff Corporation Oy||Sprayhead with nozzles made by boring|
|WO1989009661A1 *||17 Apr 1989||19 Oct 1989||Thomas Francis||Foundation drain cleaning apparatus and method|
|WO2000066285A1 *||18 Apr 2000||9 Nov 2000||Thru-Tubing Technology, Inc.||Venturi wash apparatus and method|
|WO2012041272A1 *||9 Sep 2011||5 Apr 2012||Emilia Steinicke||Device for cleaning sewer pipe walls|
|U.S. Classification||134/24, 134/102.1, 261/78.2, 239/340, 134/36, 239/8, 239/DIG.130, 15/104.12, 134/167.00C, 134/179|
|International Classification||A23G9/30, B05B1/14, B05B13/06, F28G9/00, F28G3/16, F28G1/16, F24F6/12, B08B9/04, B08B9/053|
|Cooperative Classification||F28G3/163, F28G1/16, F24F6/12, B08B9/0495, A23G9/30, B05B1/14, Y10S239/13, B05B13/0627, F28G9/00, F16L2101/12|
|European Classification||F24F6/12, F28G9/00, F28G1/16, B05B13/06C, A23G9/30, F28G3/16B, B05B1/14, B08B9/049N|