DE2213452A1 - METHOD AND DEVICE FOR DRYING ENAMEL SLIPPER ON THE INNER SURFACE OF PIPES - Google Patents
METHOD AND DEVICE FOR DRYING ENAMEL SLIPPER ON THE INNER SURFACE OF PIPESInfo
- Publication number
- DE2213452A1 DE2213452A1 DE2213452A DE2213452A DE2213452A1 DE 2213452 A1 DE2213452 A1 DE 2213452A1 DE 2213452 A DE2213452 A DE 2213452A DE 2213452 A DE2213452 A DE 2213452A DE 2213452 A1 DE2213452 A1 DE 2213452A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- heating coil
- pipes
- tube
- zone
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/006—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects the gas supply or exhaust being effected through hollow spaces or cores in the materials or objects, e.g. tubes, pipes, bottles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D7/00—Treating the coatings, e.g. drying before burning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Drying Of Solid Materials (AREA)
Description
PatentanwältePatent attorneys
Οϋϋϋ fviör.c.;-;of) 22
2vveibrüc!:enstr. 6Οϋϋϋ fviör.c.; -; of) 22
2vveibrüc!: Enstr. 6th
Vsesojuznyj naucna-issledovatel1skij P 42 273/2Vsesojuznyj naucna-issledovatel 1 skij P 42 273/2
institut po stroitel'stvu magistral'nych 20, März 1972institut po stroitel'stvu magistral'nych 20, March 1972
truboproyodov, Moskau/UdSSR, BK/Kk pr. Okruznoj 19truboproyodov, Moscow / USSR, BK / Kk pr. Okruznoj 19
VERi1AHREIi UISDD VORRICHTUNG ZUIi TROCKNEN VON EIuAILSCHLICKER AN DER INNENELÜCHE VON ROHRENVERi 1 AHREIi UISDD DEVICE ZUIi DRYING EGG SLIPPER ON THE INSIDE LOOP OF PIPES
ein Die Erfindung bezieht sich, auf Verfahren zum Trocknen a The present invention relates to method for drying
von Emailschlicker an der Innenfläche von Rohren durch Induktionserhitzung der letzteren·of enamel slip on the inner surface of pipes by induction heating the latter
Bekanntlich enthält der auf die Rohroberfläche aufgetragene Schlicker sehr viel Feuchtigkeit und zwar bis 40% des Emailfrittegewichts·As is well known, contains the applied to the pipe surface Slurry a lot of moisture, up to 40% of the weight of the enamel frit
Während des Erhitzens wird gewöhnlich das Rohr durch einDuring the heating, the tube is usually through a
beliebiges geeignetes Werk fortschreitend, längs seiner Achse,any suitable work progressing along its axis,
einer
relativ zu, es umfassenden Heizspule verschoben, wobei das
Rohr nach und nach in Längsrichtung erhitzt wird, d.h· in jedem
Augenblick **ίτ<* <*α >n cH~- °oi"e vpu te η χ ο η e befindliche l?ol..-· one
relative to it shifted comprehensive heating coil, wherein the tube is heated in the longitudinal direction gradually, ie · at every moment ** ίτ <* <* α> n cH ~ - ° oi "e vpu te η χ ο η e located l ?oil..-·
309840/0S44309840 / 0S44
teil erhitzt, während der restliche, nicht in der Heizspulenzone befindliche Teil kalt bleibt·part heated, while the remaining part, which is not in the heating coil zone, remains cold
Daher bilden sich beim Austrocknen des Schlickerüberzu-gs im erhitzten Rohrteil Wasserdämpfe, die im Rohrschacht in Richtung des kalten Rohrteils aufsteigen, wo sie (nach dem Prinzip des Rücklaufkühlers) kondensiert werden· Das entstehende Kondensat fließt herab und wäscht den auf die Rohrinnenfläche aufgetragenen Emailschlicker ab.Therefore, when the slip coating dries out, it forms in the heated pipe part water vapors in the pipe shaft in Ascend in the direction of the cold pipe part, where they (after the Principle of the return cooler) are condensed · The resulting Condensate flows down and washes off the enamel slip that has been applied to the inner surface of the pipe.
Es ist das Ziel der Erfindung, die erwähnten Nachteile zu beseitigen·It is the aim of the invention to overcome the drawbacks mentioned to eliminate·
Es soll ein vervollkommnetes Verfahren zum Trocknen des Emailschlickers entwickelt werden, welches Kondensatbildung verhindert, und eine Vorrichtung zum Durchführen dieses Verfahrens geschaffen werden.A perfected method for drying the enamel slip, which causes condensation to form, is to be developed prevented, and an apparatus for performing this method can be provided.
In der Erfindung wird ein derartiges Trockenverfahren für auf die Innenfläche von Rohren aufgetragenen Emailschlikker, bei dem Induktionserhitzung angewandt wird, beschrieben. Erfindungsgemäß besteht die Vervollkommnung darin, daß 4>eim Erhitz ersieh während des Austrocknens des Schlickers bildende Dämpfe aus dem Rohrinnenraum abgesaugt werden, um keine Kondensatbildung an der Innenfläche des nicht erhitzten Rohrteils zuzulassen.In the invention, such a drying process is used for enamel slip applied to the inner surface of pipes, using induction heating. According to the invention, the perfection consists in that 4> When heated, as the slip dries out, there are forming Vapors are extracted from the interior of the pipe to prevent condensation from forming on the inner surface of the unheated Allow pipe part.
Gleichzeitig sieht die Erfindung eine Vorrichtung vor,At the same time, the invention provides a device
die es ermöglicht, ohne Schwierigkeiten das oben/beschriebenewhich makes it possible to do the above / described without difficulty
eine Verfahren durchzuführen. Diese Vorrichtung besitzt ortsfest to carry out a procedure. This device has stationary
kontierte Heizspule und ein Werk zum fortschreitenden Ver-assigned heating coil and a work on the progressive
schieben des Rohrs längs seiner Achse und durch diese Heizspu-pushing the pipe along its axis and through this heating coil
6ItI6ItI
Ie. Erfindungsgemäß besitzt diese Vorrichtung in das erhitzte Rohr eingeführtes Steigrohr, dessen eines Ende sich in der Heizspulenzone und dessen anderes Ende sich außerhalb desIe. According to the invention, this device has in the heated Tube inserted riser, one end of which is in the heating coil zone and the other end of which is outside the
das Rohrs befindet, wobei eine Absaugeeinrichtung an letztere. the pipe is located, with a suction device attached to the latter.
angeschlossen ist·connected·
Vorteilhaft besteht das in der Heizspulenzone befindliche Steigrohrende aus perforierte/i Kopf, um die Dämpfe besser absaugen zu können· The end of the riser pipe located in the heating coil zone is advantageously made of a perforated head in order to be able to extract the vapors better.
Jetzt ist es möglich, den Emailüberzug an der Innenfläche des ganzen RohrSchachtes zu trocknen, da die Wasserdampfe direkt in der Heizspulenzone abgesaugt werden und nicht im Schacht aufsteigen und sich kein Kondensat in dem nicht erhitzten Rohrteil bildet,Now it is possible to dry the enamel coating on the inner surface of the entire pipe shaft, since the water vapors are sucked off directly in the heating coil zone and do not rise in the shaft and no condensate forms in the unheated pipe part.
nachstehend wird die Erfindung anhand der The invention is illustrated below with reference to FIG
Zeichnung, auf der die Vorrichtung zum Durchführen des erfindungsgemäßen Verfahrens abgebildet ist, ausführlich beschrieben·Drawing on which the device for performing the method according to the invention is shown in detail described
Aus der Zeichnung ist ersichtlich, daß eine Heizspule 1 starr an einem Gestell 2, das -«*£einem.Schacht 3 montiert ist, befestigt und an einen Umformer 4 angeschlossen ist. Zum Verbessern des Leistungsfaktors bei Belastung ist in den Ileizspulenkreis eine Kapazität 5 geschaltet. Ein Rohr 6 mit einer (nicht abgebildeten) Emailschlickerschicht wird mit Hilfe eines beliebigen geeigneten (nicht abgebildeten) Werks längs seiner Achse, in der durch Pfeil A angegebenen Richtung, durch die Heizspule 1 geschoben.From the drawing it can be seen that a heating coil 1 is rigidly attached to a frame 2, the - «* £ a. Shaft 3 is mounted, fastened and connected to a converter 4. In order to improve the power factor under load, a capacitance 5 is connected to the electrical coil circuit. A tube 6 with a layer of enamel slip (not shown) is pushed through the heating coil 1 along its axis in the direction indicated by arrow A with the aid of any suitable mechanism (not shown).
Im Unterteil des Schachts 3 ist ein senkrecht stehendes,In the lower part of the shaft 3 is a vertical,
dasthe
hohles Steigrohr 7 befestigt, welches in Kofcr 6 hineingeführthollow riser 7 attached, which is led into case 6
ist, um die sich während des Erh'itzens des Rohrs beim Trocknen des Schlickers bildenden Dämpfe abzusaugen·'Absaugkopf am is to suck the during Erh'itzens of the tube during the drying of the slurry forming vapors · 'suction at the
oberen Ende 8 des Steigrohrs 7 befindet sich in der Zone der Heizspule 1 und besitzt zahlreiche öffnungen 91 durch die die Dämpfe strömen. Die öffnungen 9 sind in der ganzen ringförmigen Zone der Heizspule 1 vorgesehen. Am unteren, aus dem Rohr 6 herausragenden Ende 10 des Steigrohrs 7 ist über eine Rohr-The upper end 8 of the riser pipe 7 is located in the zone of the heating coil 1 and has numerous openings 91 through which the vapors flow. The openings 9 are provided in the entire annular zone of the heating coil 1. At the lower end 10 of the riser pipe 7 protruding from the pipe 6 is via a pipe
eifte
leitung 11 Absaugeeinrichtung 12 (Ventilator) angeschlossen. eifte
Line 11 suction device 12 (fan) connected.
Der innere Querschnitt des Steigrohrs 7 ist etwasThe inner cross section of the riser 7 is somewhat
einen -/3 one - / 3
unterhalb der Rohrleitung 11 durch schrägen Boden abgeschlossen. Der letztere dient zum Ableiten des aus den Dämpfen kondensierten Wassers ine/«en Sammelbehälter 14, aus dem es über eine Rohrleitung 15 durch eine Pumpe 16 entfernt wird. completed below the pipeline 11 by sloping floor. The latter serves to divert the water condensed from the vapors into a collecting tank 14, from which it is removed via a pipe 15 by a pump 16.
Das erfindungsgemäße Trockenverfahren kann anschaulich durch die Arbeitsweise der Vorrichtung erläutert werden.The drying process according to the invention can be illustrative can be explained by the operation of the device.
Das Rohr 6 wird während des Erhitzens in der durch den Pfeil A angegebenen Richtung relativ zur Heizspule verschoben. Wasserdämpfe, die sich beim Trocknen des auf die Innenfläche des Rohrs aufgetragenen Schlickers bilden, werden über das Steigrohr 7 vom Ventilator 12 abgesaugt, so daß keine Dämpfe in den nicht erhitzten (oberen) Teil des Rohrs 6 gelangen. Das teilweise aus den Dämpfen kondensierte Wasser fließt über den schrägen Boden 13 des Steigrohrs 7 in den Behälter 14 und wird durch die Pumpe 16 aus diesem entfernt,The tube 6 is during heating in the by the Direction indicated by arrow A shifted relative to the heating coil. Water vapor that dries on the inner surface Form the pipe applied slip, are sucked through the riser 7 by the fan 12, so that none Vapors get into the unheated (upper) part of the tube 6. The water partially condensed from the vapors flows via the inclined bottom 13 of the riser pipe 7 into the container 14 and is removed therefrom by the pump 16,
309840/Q544309840 / Q544
Dank der getroffenen Maßnahmen wird nach dem Einbrennen Emailschlicker mit gleichmäßiger Dicke und einer Struktur, die sich durch hohe Kennwerte der physikalisch-chemischen Eigenschaften auszeichnet, erhalten·Thanks to the measures taken, after the burn-in Enamel slip with a uniform thickness and a structure that is characterized by high parameters of the physicochemical properties distinguished, received
309840/0S4A309840 / 0S4A
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7212090A FR2179306A5 (en) | 1972-04-06 | 1972-04-06 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2213452A1 true DE2213452A1 (en) | 1973-10-04 |
| DE2213452B2 DE2213452B2 (en) | 1975-04-24 |
| DE2213452C3 DE2213452C3 (en) | 1975-11-27 |
Family
ID=9096424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2213452A Expired DE2213452C3 (en) | 1972-04-06 | 1972-03-20 | Method and device for drying enamel slip on the inner surface of pipes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3816938A (en) |
| CH (1) | CH535288A (en) |
| DE (1) | DE2213452C3 (en) |
| FR (1) | FR2179306A5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100948A1 (en) * | 1981-01-14 | 1982-07-29 | Respublikanskij gosudarstvennyj institut po proektirovaniju ob"ektov proizvodstvennoj bazy vodochozjajstvennych organizacij "Rosgiprovodprom", Rostov-na-Donu | Apparatus for drying the slip when enamelling pipes |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357761A (en) * | 1981-01-08 | 1982-11-09 | Makeev Anatoly E | Apparatus for drying enamel slip coatings on pipes |
| FR2501729A1 (en) * | 1981-03-12 | 1982-09-17 | Respub G Insti | Large vertical dryer - using hot air streams to dry enamel slurry on pipes, esp. pipes which will be laid underground to carry water |
| US4680871A (en) * | 1985-05-17 | 1987-07-21 | David Reznik | Apparatus and method for drying and curing coated substrates |
| US4694586A (en) * | 1985-05-17 | 1987-09-22 | David Reznik | Apparatus and method for drying and curing coated substrates |
| DE4402125C2 (en) * | 1994-01-21 | 1998-07-02 | Keulahuette Krauschwitz Gmbh | Process for enamelling the inner surface of products |
| FR2734501B1 (en) * | 1995-05-23 | 1997-07-04 | Stein Heurtey | METHOD AND DEVICE FOR COATING METAL STRIPS |
| DE19933893A1 (en) * | 1999-07-22 | 2001-01-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Process for coating lamp bulbs |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1997761A (en) * | 1931-01-23 | 1935-04-16 | Chrysler Corp | Method of internally coating hollow articles |
| US2555450A (en) * | 1943-11-29 | 1951-06-05 | Lee Foundation For Nutritional | High-frequency dehydrating method and apparatus |
| US2848566A (en) * | 1954-02-01 | 1958-08-19 | Smith Corp A O | Induction heating apparatus for fusing vitreous enamel |
| US3287097A (en) * | 1962-01-02 | 1966-11-22 | Smith Corp A O | Method and apparatus of fusing a coating to a metal surface |
-
1972
- 1972-03-20 DE DE2213452A patent/DE2213452C3/en not_active Expired
- 1972-03-22 US US00237135A patent/US3816938A/en not_active Expired - Lifetime
- 1972-04-06 FR FR7212090A patent/FR2179306A5/fr not_active Expired
- 1972-07-21 CH CH1094972A patent/CH535288A/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100948A1 (en) * | 1981-01-14 | 1982-07-29 | Respublikanskij gosudarstvennyj institut po proektirovaniju ob"ektov proizvodstvennoj bazy vodochozjajstvennych organizacij "Rosgiprovodprom", Rostov-na-Donu | Apparatus for drying the slip when enamelling pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| US3816938A (en) | 1974-06-18 |
| CH535288A (en) | 1973-03-31 |
| DE2213452B2 (en) | 1975-04-24 |
| DE2213452C3 (en) | 1975-11-27 |
| FR2179306A5 (en) | 1973-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2407616A1 (en) | SPRAY DRYER | |
| DE2213452A1 (en) | METHOD AND DEVICE FOR DRYING ENAMEL SLIPPER ON THE INNER SURFACE OF PIPES | |
| DE1947070A1 (en) | Device for degreasing objects using a solvent | |
| DE2313974B1 (en) | PROCESS AND DEVICE FOR HEATING OPEN MATERIAL FUSED STRIPS SUCH AS GALVANIZED, ENAMELLED, GLASS OD. DGL. -Bathers in tubs or basins | |
| AT321057B (en) | Method and device for drying enamel slip on the inner surface of pipes | |
| DE525445C (en) | Method and device for vulcanizing rubber objects | |
| DE861689C (en) | Method and device for mixing liquids, in particular oils, fats, mineral oils, paraffins and the like. Like., With steam, air or other gases or vapors | |
| DE687186C (en) | Evaporator | |
| AT113077B (en) | Device for heating liquids in cisterns for the purpose of emptying them. | |
| DE184558C (en) | ||
| DE2161060C2 (en) | Device for removing odors from oils | |
| DE763235C (en) | Drumless high-pressure boiler working with natural circulation for high performance | |
| CH543310A (en) | Method of applying a layer of liquid anti-rust compound to the inner surface of pipes and device for carrying out the same | |
| DE1519833A1 (en) | Multi-stage liquid-liquid extractor | |
| DE174167C (en) | ||
| DE592311C (en) | Process for the distillation of mineral oils | |
| DE89474C (en) | ||
| DE145793C (en) | ||
| DE533600C (en) | Portable tar kettle | |
| DE470419C (en) | Device for distilling tar u. like | |
| DE322546C (en) | Process and device for dewatering peat | |
| DE379633C (en) | Pipe holder | |
| DE434095C (en) | Multi-part steep tube boiler | |
| AT108164B (en) | Device for deodorising fats and oils. | |
| AT102963B (en) | Method and device for deodorising fats and oils by treating them with superheated steam in a vacuum. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8339 | Ceased/non-payment of the annual fee |