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DE3015516A1 - Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy - Google Patents

Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy

Info

Publication number
DE3015516A1
DE3015516A1 DE19803015516 DE3015516A DE3015516A1 DE 3015516 A1 DE3015516 A1 DE 3015516A1 DE 19803015516 DE19803015516 DE 19803015516 DE 3015516 A DE3015516 A DE 3015516A DE 3015516 A1 DE3015516 A1 DE 3015516A1
Authority
DE
Germany
Prior art keywords
pores
plastic
molded parts
porous
coated
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.)
Withdrawn
Application number
DE19803015516
Other languages
German (de)
Inventor
Horst W. 4000 Düsseldorf Steinhoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19803015516 priority Critical patent/DE3015516A1/en
Publication of DE3015516A1 publication Critical patent/DE3015516A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B08B9/055—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 conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0552—Spherically shaped pigs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • 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
    • B08B9/055—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 conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0553—Cylindrically shaped pigs

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)

Abstract

Small porous plastic components for cleaning inside pipes have the walls of their pores coated with material of higher S.G.; the basic components are polyurethane foam and the coating material is synthetic or natural rubber. The articles are compressed to drive out air and immersed again in the liquid, so that they are impregnated. They are compressed again enough to remove excess liquid, and allowed to recover in air. The walls of the pores are thereby suitably coated. Buoyancy is not excessive, construction is not readily attacked chemically, materials used and the sizes can be as required by circumstances.

Description

Poröse Formteile zum Reinigen von RohrleitungenPorous molded parts for cleaning pipelines

Die Erfindung betrifft kleine, aus porösem Kunststoff bestehende Formteile als Mittel zum Reinigen von Rohrleitungen. Beispielsweise werden kleine Kugeln aus Schwammgummi oder synthetischem Schaumstoff in den Leitungen der Rohrleitungssysteme von Wasseraufbereitungs--, Meerwasserentsalzungs- und Kläranlagen verwtsndet, um unerwünschte Ablagerungen an den Innenwänden der Rohre zu verhindern. Solche Kugeln aus synthetischem Schaumstoff haben wegen des niedrigen spezifischen Gewichts des Kunststoffs und der große#n Menge eingeschlossener Luft ein so niedriges spezifisches Gewicht, daß sie im Wasser einen unerwünscht großen Auftrieb haben.The invention relates to small molded parts made of porous plastic as a means for cleaning pipelines. For example, small balls are made from Sponge rubber or synthetic foam in the lines of the pipeline systems used by water treatment, seawater desalination and sewage treatment plants to to prevent unwanted deposits on the inner walls of the pipes. Such bullets made of synthetic foam due to the low specific weight of the Plastic and the large amount of trapped air have such a low specificity Weight that they have an undesirably large buoyancy in the water.

Ein weiterer Nachteil solcher Formteilchen aus synthetischen Stoffen, die sich zur Herstellung von Schaumstoff besonders eignen, ist die Empfindlichkeit solcher Stoffe gegenüber Chemikalien, die in den Leitungen gefördert werden.Another disadvantage of such molded particles made of synthetic materials, which is particularly suitable for the production of foam is the sensitivity such substances compared to chemicals that are conveyed in the lines.

Aufgabe der Erfindung ist es, solche Formteilchen zu schaffen, die diese Nachteile nicht aufweisen. Gemaß der Erfindung sind die die Poren bildenden Wände der aus Kunststoff-Schaum bestehenden Formteile mit einem Material beschichtet, dessen spezifisches Gewicht geößer ist als das spezifische Gewicht des genannten Kunststoffs.The object of the invention is to provide such molded particles that do not have these disadvantages. According to the invention are those forming the pores Walls of the Plastic foam molded parts with one Coated material, the specific weight of which is greater than the specific Weight of said plastic.

Das Material des Schaumstoffs und die Art des Beschichtungsmaterials sowie Größe und Form der Formteilchen können den jeweiligen Bedürfnissen angepaßt werden. Beispielsweise können die Formteilchen aus einem Polyurethan-Schaum und das Beschichtungsmaterial aus synthetischem Kautschuk, beispielsweise Neopren-Kautschuk, bestehen.The material of the foam and the type of coating material as well as the size and shape of the shaped particles can be adapted to the respective requirements will. For example, the molded particles made of a polyurethane foam and the coating material made of synthetic rubber, for example neoprene rubber, exist.

Die Zeichnung zeigt Ausführungsbeispiele der Erfindung.The drawing shows exemplary embodiments of the invention.

Fig. 1 zeigt zwei kugelige Formteilchen, Fig. 2 zeigt ein zylindrisches Formteilchen, Fig. 3 zeigt in stark vergrößertem Maßstab einen Schnitt durch einen kleinen Teil eines solchen Formteilchens.Fig. 1 shows two spherical shaped particles, Fig. 2 shows a cylindrical Molded particles, Fig. 3 shows on a greatly enlarged scale a section through a small part of such a shaped particle.

Die in den Fig. 1 und 2 dargestellten Formteilchen bestehen aus einem Schaum aus Polyurethan, dessen Poren durch das ganze Formteilchen hindurch durchgängig sind und wobei die verhältnismäßig dünnen Wände 1 der Poren einen Überzug 2 aus Neopren-Kautschuk besitzen, wie Fig. 3 zeigt.The molded particles shown in Figs. 1 and 2 consist of one Foam made of polyurethane, the pores of which are continuous through the entire molded particle are and wherein the relatively thin walls 1 of the pores a coating 2 from Have neoprene rubber, as shown in FIG. 3.

Die Formteilchen können in der Weise hergestellt werden, daß aus einem Kunststoff in bekannter Weise poröse Formteile mit durchgehenden Poren hergestellt werden, diese dann in einem Bad, das aus einem Material besteht, dessen spezifisches Gewicht größer ist als das des Kunststoffs und das die Eigenschaft hat, sich an der Oberfläche des Kunststoffs abzulagern, um beim Trocknen einen festen Überzug zu bilden, oder aus einer Dispersion eines solchen Materials besteht, derart zusammengedrückt werden, daß die in den Poren der Formteile enthaltene Luft ausgetrieben wird, dann innerhalb des Bades entlastet werden, sp daß das Beschichtungsmaterial in die Poren des Formteils eindringt und sie im wesentlichen ausfüllt, und anschließend so weit zusammengedrückt werden, daß das genannte Beschichtungsmaterial in solchem Maße aus den Poren entfernt wird, daß bei anschließender Entlastung der Formteile in der Luft die Poren, deren Wände mit dem Beschichtungsmaterial beschichtet sind, sich mit Luft füllen.The molded particles can be produced in such a way that from one Plastic produced in a known manner porous molded parts with continuous pores are then placed in a bath made of a material that is specific to it Weight is greater than that of the plastic and that has the property to stick to to deposit on the surface of the plastic to form a solid coating as it dries to build, or consists of a dispersion of such a material, are compressed in such a way that the air contained in the pores of the molded parts is driven out, then relieved within the bath, sp that the coating material penetrates into the pores of the molded part and essentially fills them, and then are compressed so far that said coating material in such Dimensions is removed from the pores that with subsequent relief of the moldings in the air the pores, the walls of which are coated with the coating material, fill with air.

LeerseiteBlank page

Claims (4)

Ansprüche: Kleine, aus porösem Kunststoff bestehende Formteile als Mittel zum Reinigen von Rohrleitungen, d a d u r c h g e k e n n z e i c h n e t, daß die die Poren bildenden Wände der Formteile mit einem Material beschichtet sind, dessen spezifisches Gewicht größer ist als das snezifische Gewicht des Kunststoffs. Demands: Small molded parts made of porous plastic as Means for cleaning pipelines that the pore-forming walls of the molded parts are coated with a material, whose specific weight is greater than the specific weight of the plastic. 2. Formteile nach Anspruch 1, d a d u r c h g e -k e n n z e i c h n e t, daß sie aus einem Polyurethan-Schaum bestehen, und daß das genennte Material aus synthetischem Kautschuk besteht.2. Molded parts according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that they consist of a polyurethane foam, and that the named material made of synthetic rubber. 3. Formteile nach Anspruch 2, d a d u r c h g e -k e n n z e i c h n e t, daß das genannte Material ein Neopren-Kautschuk ist.3. Molded parts according to claim 2, d a d u r c h g e -k e n n z e i c h n e t that said material is a neoprene rubber. 4. Verfahren zum Herstellen von porösen Formteilchen nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t, daß aus einem Kunststoff poröse Formteile mit durchgehenden Poren hergestellt werden, diese dann in einem Bad, das aus einem Material besteht, dessen spezifisches Gewicht größer ist als das des Kunststoffs und das die Eigenschaft hat, sich an der Oberfläche des Kunststoffs anzula#gern, um beim Trocknen einen festen Überzug zu bilden, oder aus einer Dispersion eines solchen Materials besteht, derart zusammengedrückt werden, daß die in den Poren der Formteile enthaltene Luft ausgetrieben wird, dann innerhalb des Bades entlastet werden, so daß das Beschichtungsmaterial in die Poren des Formteils eindringt und sie im wesentlichen ausfüllt, und anschließend wo weit zusammengedrückt werden, daß das gesamte Material in solchem Maße aus den Poren entfernt wird, daß bei anschließender Entlastung der Formteile in der Luft die Poren, deren Wände mit dem genannten Material beschichtet sind, sich mit Luft füllen.4. A method for producing porous molded particles according to any one of Claims 1 to 3, that are made of a plastic porous molded parts with continuous pores are produced, these then in one Bath made of a material the specific weight of which is greater than that of the plastic and that has the property of sticking to the surface of the plastic accumulate to form a solid coating when dry, or from a dispersion consists of such a material, are compressed in such a way that the in the Pores of the moldings contained air is expelled, then inside the bath are relieved, so that the coating material penetrates into the pores of the molded part and it essentially fills it out, and then where it is squeezed that all the material is removed from the pores to such an extent that with subsequent Relief of the molded parts in the air the pores, the walls of which with the said material are coated, fill with air.
DE19803015516 1980-04-23 1980-04-23 Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy Withdrawn DE3015516A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803015516 DE3015516A1 (en) 1980-04-23 1980-04-23 Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803015516 DE3015516A1 (en) 1980-04-23 1980-04-23 Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy

Publications (1)

Publication Number Publication Date
DE3015516A1 true DE3015516A1 (en) 1981-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803015516 Withdrawn DE3015516A1 (en) 1980-04-23 1980-04-23 Porous cleaners for pipe interiors - polyurethane foam with pores coated with heavier synthetic rubber for reduced buoyancy

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078373A1 (en) * 2003-01-13 2004-09-16 The Boeing Company Foam pellet catcher and retriever and method implementing the same
EP2075076A1 (en) * 2007-12-28 2009-07-01 BOSIG GmbH Cleaning pig made of foam rubber for cleaning pipes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT123193B (en) * 1928-08-31 1931-06-10 Albert Seifert Cleaning compound for cleaning beer lines u. like
US3546642A (en) * 1968-05-10 1970-12-08 Peoples Gas Light & Coke Co Th Pigging device
DE2026502A1 (en) * 1969-06-02 1970-12-10
DE1962742A1 (en) * 1969-12-15 1972-03-02 Hippel Hansjoachim Von Dr Ing Pit lining with a handlebar connected to the cap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT123193B (en) * 1928-08-31 1931-06-10 Albert Seifert Cleaning compound for cleaning beer lines u. like
US3546642A (en) * 1968-05-10 1970-12-08 Peoples Gas Light & Coke Co Th Pigging device
DE2026502A1 (en) * 1969-06-02 1970-12-10
DE1962742A1 (en) * 1969-12-15 1972-03-02 Hippel Hansjoachim Von Dr Ing Pit lining with a handlebar connected to the cap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078373A1 (en) * 2003-01-13 2004-09-16 The Boeing Company Foam pellet catcher and retriever and method implementing the same
EP2075076A1 (en) * 2007-12-28 2009-07-01 BOSIG GmbH Cleaning pig made of foam rubber for cleaning pipes

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee