EP0041932B1 - Vorrichtung zum Verspritzen einer Auskleidung - Google Patents

Vorrichtung zum Verspritzen einer Auskleidung Download PDF

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Publication number
EP0041932B1
EP0041932B1 EP81850099A EP81850099A EP0041932B1 EP 0041932 B1 EP0041932 B1 EP 0041932B1 EP 81850099 A EP81850099 A EP 81850099A EP 81850099 A EP81850099 A EP 81850099A EP 0041932 B1 EP0041932 B1 EP 0041932B1
Authority
EP
European Patent Office
Prior art keywords
conduit
mixing nozzle
lance
lining material
coupling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81850099A
Other languages
English (en)
French (fr)
Other versions
EP0041932A1 (de
Inventor
Lars Ivar Setterberg
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.)
Svenska Silikaverken AB
Original Assignee
Svenska Silikaverken AB
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 Svenska Silikaverken AB filed Critical Svenska Silikaverken AB
Priority to AT81850099T priority Critical patent/ATE36192T1/de
Publication of EP0041932A1 publication Critical patent/EP0041932A1/de
Application granted granted Critical
Publication of EP0041932B1 publication Critical patent/EP0041932B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1673—Repairing linings by projecting or spraying refractory materials on the lining applied centrifugally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • B22D41/023—Apparatus used for making or repairing linings

Definitions

  • the present invention relates to an apparatus for spraying lining on the inner surface of tunnels, deep vessels etc., e.g. ladles.
  • a wear lining which for deep vessels such as ladles, for example, consists of a refractory material.
  • tunnels there can be a need to line the interior surface with cement.
  • Such sprayers are known; see for example U.S. Patent 3,797,745.
  • This patent describes a sprayer for lining ladles.
  • dry refractory material is conveyed to one or more mixing nozzles, in which the dry material is mixed with a wetting agent and leaves the nozzles while they rotate by means of a drive means, so that an even lining is applied to the interior surface of the ladle.
  • the apparatus is assumed to be movable along or parallel to the axis of the ladle.
  • the wetting agent is applied centrally in a conduit, concentrically arranged in a pipe in which the dry material is conveyed by air.
  • This design comprises a generally vertically arranged pair of telescopically related counduits, these being a nozzle on the lower end of the innermost conduit.
  • Granular material is supplied to the upper end of the innermost conduit and water is supplied through a member to the upper end of the outer conduit and from the lower end of the outer conduit to the mixing nozzle.
  • Means is provided for rotating the conduits and hence the nozzle.
  • the wetting agent to the mixing nozzle in a satisfactory manner.
  • it may be necessary to add more than one wetting agent to the dry material can be eliminated and the sprayer according to the invention be used for interior painting of cisterns or pipes of relatively large diameter, for example.
  • the invention relates to an apparatus for spraying lining on the inner surface of tunnels, deep containers etc., e.g. ladles comprising
  • a first elongated conduit having an entrance end through which dry lining material is conveyed by a carrier gas, and terminating at its other end in one or more mixing nozzles with at least one discharge lance, through which the lining material is sprayed;
  • the second conduit is arranged outside and beside said first conduit, the two ends of said second conduit are connected with each other via the second rotary coupling, comprising a fixed member arranged on the first conduit and a member arranged around the first conduit, which members are rotatable relative each other, the rotatable member being connected to the mixing nozzle(s) and said second rotary coupling is provided with one or more annular grooves on each coupling half, directlyfacing each other, and with the required sealing means between the coupling halves, said annular grooves being in communication with the entrance and outlet conduit for wetting agent.
  • the sprayer is provided with a lance and one or more mixing nozzles.
  • the sprayer according to the invention is provided with two lances and one or more mixing nozzles to each lance.
  • the outer pipe of the first conduit is arranged to be driven by means of the drive means with a rotary movement thus driving the lance arrangement.
  • the rotating coupling half of the second rotary coupling is arranged to be driven by means of the drive means with a rotational movement thus driving the lance arrangement.
  • the sprayer comprises a central pipe 1, a first rotary coupling 2, a second rotary coupling 3, a drive means 4, at least one mixing nozzle 5, and at least one lance 6.
  • a hose 7 is inserted in the central pipe 1, through which hose the dry material is conveyed by means of a carrier gas.
  • the hose which is surrounded in the pipe 1 by suitable spacers (not shown), terminates at or slightly above the deflector plate 8, which directs the dry material into the lance 6 past the mixing nozzle 5.
  • the sprayer is only provided with one lance.
  • Awetting agentforthe dry material is conducted through a conduit9, 10 via the second rotary coupling 3 to the mixing nozzle 5.
  • the drive means 4 includes an electric motor for example which in this embodiment drives, via a gear 11, a gear ring 12 which is fixed to the central pipe 1, whereby the lance 6 is caused to rotate.
  • This is made possible by the first rotary coupling, of known design, by means of which the central pipe 1 is divided into an upper fixed portion 13 and a rotary lower portion 14.
  • the second rotary coupling 3 consists of members 15 and 16, one 16 of which is fixed to the central pipe 1, by welding for example (see Fig. 3).
  • each member 15 and 16 there is an annular groove 17 and 18, respectively.
  • the grooves 17 and 18 are arranged directly facing each other.
  • the second member 15 is mounted by means of a bearing 20 on the central pipe 1.
  • the two members 15 and 16 are provided with connections 21 and 22, one the inlet and one the outlet for wetting agent.
  • the connection 21 is the inlet and 22 is the outlet, which is connected to the mixing nozzle 5 via the conduit 10.
  • the sprayer according to the invention functions in the following manner.
  • the sprayer is suspended in a suitable suspension means (not shown).
  • the hose 7 communicates with a suitable storage vessel (not shown) and by means of a carrier gas, dry lining material can be conveyed through the hose 7 to the lance 6 past the mixing nozzle 5.
  • the drive means 4 sets the lance 6 in rotary motion, which means that the lower portion 14 of the central pipe 1, the lower member 16 of the second rotary coupling 3, the conduit 10 and the mixing nozzle 5 will rotate at the same speed.
  • Wetting agent which is supplied through the conduit 9, can be fed in in a predetermined amount by a known measuring means (not shown) and will flow via the annular groove 17,18 in the coupling 3 to the mixing nozzle 5 and be mixed with the dry lining material and be applied to the interior walls of the vessel in question via the lance 6.
  • a suitable lifting means, an overhead crane or the like can move the sprayer up and down through the vessel so that its walls are evenly coated.
  • Reference numeral 23 designates a cover which is of course removable and which serves as a heat radiation protecter.
  • the sprayer according to Fig. 1 appears to be quite tall, but this is not the case in practice since, as is shown in Fig. 2, the first 2 and second 3 rotary couplings and the drive means 4 can be brought together so as to shorten the length of the sprayer. It is possible, by means of suitable arrangements, to use the sprayer horizontally, i.e. with the central pipe 1 horizontal, for lining or painting tunnels or pipes of large diameter, for example.
  • the drive means 4 can also be so constructed that the lance 6 (lances) is pivoted back and forth over a certain predetermined sector.
  • Fig. 2 The embodiment according to Fig. 2 is similar to the one in Fig. 1 but it is intended for two lances 6 each with a mixing nozzle 5. Only one lance and one mixing nozzle are shown.
  • the deflecting plate 8 in Fig. 1 has been replaced here with a conical distributing means for dry material, schematically shown here and labelled 24.
  • the central pipe 1 is divided into an upper portion 13 and a lower portion 14 connected to the first rotary coupling 2, now placed near the lances 6.
  • the second rotary coupling 3 as shown in Fig. 4 is turned upside down so that its member 16 is rigidly fixed to the central pipe 1 as before.
  • Fig. 2 shows the drive means 4 fixed to the upper portion of the coupling 3 and driving the gear ring 12 fixed to supports 25, which rigidly join the lower member 15 of the coupling 3 to the lower portion 14 of the central pipe 1, on which the lances 6 with the mixing nozzles 5 are arranged.
  • Neither the second lance, the second mixing nozzle nor the second supply conduit 10 to the second mixing nozzle are shown in Fig. 2.
  • the lance 6 (lances) can suitably be inclined downwards as seen in Figs. 1 and 2 by an angle of 5-10° and a suitable rotational speed of the lances can be between 1 and 10 r.p.m. or higher when the r.p.m. is continuously variable.
  • the higher speed is of course used when one desires to apply thin coats.
  • a practical measure is to keep the pressure of the wetting agent in the mixing nozzles higher than the pressure of the carrier gas for the dry material.
  • the construction in the present invention solves in a practically feasible manner the problem of supplying a solid dry material and at least one wetting agent to the lances 6. It has proved impossible to implement in practical operation the disclosure in U.S. Patent Specification 3,797,745 mentioned in the introduction.
  • member 15 must be rotated 180° in the same manner for the outlet21 to be on the same side as the conduit 10 in Fig. 2. Furthermore it can be mentioned that the conduit 10 can be connected anywhere on the circumference of the annular groove 18 in Fig. 3 or the groove 17 in Fig. 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (5)

1. Vorrichtung zum Aufspritzen einer Auskleidung auf die Innenfläche von Tunnels, tiefen Behältern usw., beispielsweise Pfannen, welche
eine erste langgestreckte Leitung (1) aufweist, die ein Eintrittsende besitzt, über welches trockenes Auskleidungsmaterial mittels eines Trägergases zugeführt wird, und welche an ihrem anderen Ende in einer oder in mehreren Mischdüsen (5) mit zumindest einer Austrittslanze (6) endet, über welche das Auskleidungsmaterial versprüht wird,
zumindest eine zweite langgestreckte Leitung (9, 10) aufweist, welche ein Eintrittsende für ein Benetzungsmittel für das Auskleidungsmaterial besitzt und deren anderes Ende mit der Mischdüse (5) verbunden ist,
eine erste Drehkupplung (2) zwischen dem Eintrittsende der ersten Leitung (1) und der Mischdüse (5) aufweist,
eine zweite Drehkupplung (3) zwischen dem Eintrittsende der zweiten Leitung (9, 10) und der Mischdüse (5) aufweist und
eine Antriebseinrichtung (4) für den rotierenden Antrieb der Mischdüse (5) mit der Austrittslanzeneinrichtung (6) aufweist, dudurch gekennzeichnet,
daß die zweite Leitung (9, 10) außerhalb und neben der erwähnten ersten Leitung (1) angeordnet ist, daß die zwei Enden der erwähnten zweiten Leitung (9,10) miteinander über die zweite Drehkupplung (3) verbunden sind, welche einen an der ersten Leitung (1) angeordneten feststehenden Teil (16) und einen um die erste Leitung (1) herum angeordneten Teil (15) aufweist, wobei die Teile (15,16) relativ zueinander rotierbar sind und der rotierbareTeil (15) mit der Mischdüse bzw. den Mischdüsen (5) verbunden ist, und daß die erwähnte zweite Drehkupplung (3) an jeder Kupplungshälfte (15, 16) mit einer oder mehreren, einander direkt gegenüberliegenden Ringnuten (17, 18) und mit den erforderlichen Dichteinrichtungen (19) zwischen den Kupplungshälften versehen ist, wobei die erwähnten Ringnuten (17, 18) mit der Eintrittsleitung und der Austrittsleitung für das Benetzungsmittel in Verbindung stehen.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie mit einer Lanze (6) und einer oder mehreren Mischdüsen (5) ausgestattet ist.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie mit zwei Lanzen (6) und einer oder mehreren Mischdüsen (5, 5') für jede Lanze ausgestattet ist.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das äußere Rohr (1) der ersten Leitung für den Antrieb zu einer Drehbewegung durch die Antriebseinrichtung (4) angeordnet ist und somit die Lanzenanordung (6) antreibt.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Kupplungshälfte (15) der zweiten Drehkupplung (3) für den Antrieb zu einer Drehbewegung durch die Antriebseinrichtung (4) angeordnet ist und somit die Lanzenanordnung (6) antreibt.
EP81850099A 1980-06-06 1981-06-01 Vorrichtung zum Verspritzen einer Auskleidung Expired EP0041932B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81850099T ATE36192T1 (de) 1980-06-06 1981-06-01 Vorrichtung zum verspritzen einer auskleidung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8004257 1980-06-06
SE8004257A SE424816B (sv) 1980-06-06 1980-06-06 Spruta for sprutning av foder

Publications (2)

Publication Number Publication Date
EP0041932A1 EP0041932A1 (de) 1981-12-16
EP0041932B1 true EP0041932B1 (de) 1988-08-03

Family

ID=20341160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81850099A Expired EP0041932B1 (de) 1980-06-06 1981-06-01 Vorrichtung zum Verspritzen einer Auskleidung

Country Status (4)

Country Link
EP (1) EP0041932B1 (de)
AT (1) ATE36192T1 (de)
DE (1) DE3176831D1 (de)
SE (1) SE424816B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227034A1 (de) * 1982-07-20 1984-01-26 Kurt 4300 Essen Wolf Ausspritzvorrichtung, insbesondere zum ausbessern der zustellung von schmelzoefen, giesspfannen o.dgl.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099708A (en) * 1977-08-03 1978-07-11 Riverside Clay Company Apparatus for applying granular refractory material to surfaces

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797745A (en) * 1973-01-24 1974-03-19 J Haus Apparatus for spraying refractory lining
US3799445A (en) * 1973-04-30 1974-03-26 Pfizer Vertical remote-controlled refractory gunning apparatus
US3847353A (en) * 1973-11-14 1974-11-12 J Wynne Spray device for coating the outside of pipe
US3931959A (en) * 1974-10-29 1976-01-13 A. P. Green Refractories Co. Gun for applying refractory material
US4211367A (en) * 1977-03-23 1980-07-08 Bmi, Inc. Gunning apparatus for in situ spraying of refractory material
US4163546A (en) * 1978-03-06 1979-08-07 Morris John C Apparatus for applying granular refractory material to surfaces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099708A (en) * 1977-08-03 1978-07-11 Riverside Clay Company Apparatus for applying granular refractory material to surfaces

Also Published As

Publication number Publication date
SE424816B (sv) 1982-08-16
EP0041932A1 (de) 1981-12-16
DE3176831D1 (en) 1988-09-08
SE8004257L (sv) 1981-12-07
ATE36192T1 (de) 1988-08-15

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