EP0345237A1 - Concreting jet spray apparatus - Google Patents

Concreting jet spray apparatus Download PDF

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Publication number
EP0345237A1
EP0345237A1 EP89850173A EP89850173A EP0345237A1 EP 0345237 A1 EP0345237 A1 EP 0345237A1 EP 89850173 A EP89850173 A EP 89850173A EP 89850173 A EP89850173 A EP 89850173A EP 0345237 A1 EP0345237 A1 EP 0345237A1
Authority
EP
European Patent Office
Prior art keywords
flight
assembly
jet
concreting
jet nozzle
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Withdrawn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
EP89850173A
Other languages
German (de)
English (en)
French (fr)
Inventor
Olli Virtanen
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.)
Lohja Oy AB
Original Assignee
Lohja Oy 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 Lohja Oy AB filed Critical Lohja Oy AB
Publication of EP0345237A1 publication Critical patent/EP0345237A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1223—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers discontinuously operating mixing devices, e.g. with consecutive containers
    • B28C5/123—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers discontinuously operating mixing devices, e.g. with consecutive containers with pressure or suction means for discharging

Definitions

  • the present invention concerns a concreting jet spray apparatus comprising a concrete mix container having a propelling flight for moving the concrete mix and a jet nozzle assembly at the exit end of the flight assembly with a compressed air jet nozzle inside the jet assembly.
  • the compressed air channel leading to the compressed air jet nozzle assembly is conventionally adapted to pass through the center of the shaft of the concrete mix propelling flight (Fig. 1).
  • Disclosed in German patent application publications 2 056 145 and 2 103 448 is an alternative embodiment in which compressed air is routed from an annular slot of the nozzle assembly to the jet-­forming nozzle.
  • the present invention aims to achieve a novel type of a concreting jet spray apparatus, which offers significant advantages in comparison with conventional techniques.
  • the concreting jet spray apparatus is characterized by having the jet nozzle assembly mounted to the head of the concrete mix-propelling flight assembly so that the jet nozzle is adapted perpendicularly to the flight axis.
  • one or several compressed air nozzles can be adapted to the jet nozzle head assembly in a desired manner. The need for routing compressed air via ducts is avoided allowing the flight to be rotated with a solid shaft.
  • An embodiment of the invention is characterized by having the compressed-air jet nozzle comprised of a pipe placed within the rear section of the nozzle head assembly and perpendicularly to the flight axis.
  • This kind of a compressed-air jet nozzle is simple in construction, cost-effective in manufacturing and, when required, quickly replaceable with different types of jet nozzles.
  • Another embodiment of the invention is characterized by having the nozzle assembly pivotally mounted to the end of the flight assembly to be rotatable about the axis of the flight.
  • the nozzle assembly can easily be directed to a desired point if spraying is desired to be performed obliquely from above or from below.
  • a further embodiment of the invention is characterized by having the jet nozzle assembly rotatably mounted with the help of a ball-socket joint to the head of the flight assembly so that the nozzle direction is freely adjustable to any direction.
  • the jet can be directed in desired directions, and furthermore, if the flight assembly is provided with two auger flights with individual head assemblies, significant improvements will be achieved in comparison with all prior art concreting jet constructions.
  • the concreting jet comprises a concrete mix container 1 with a concrete mix-transferring flight 2 below the container, and a jet nozzle assembly 3 mounted to the end of the flight assembly, having a compressed-air nozzle 4 inside the nozzle assembly.
  • the nozzle assembly 3 is mounted to the head of the flight 2 assembly so that the nozzle section is perpendicular to the flight axis.
  • the compressed-air nozzle 4 is comprised of a tube 5, mounted to the rear section of the nozzle assembly 3, so that the tube also is aligned perpendicular to the flight.
  • Fig. 5 illustrates the method of mounting the nozzle assembly 3 rotatably to the end section of the flight assembly as indicated by arrow 6. The angle of rotation may be up to 180°. Figs.
  • FIG. 6 and 7 illustrate a concreting jet spray apparatus with dual spray assemblies, in which an inclination ⁇ of the apparatus allows the elevations of the spray assemblies to be displaced by height x, whereby the spraying operation is speeded up.
  • the number of compressed-air nozzles can be freely selected so that the embodiment shown in Fig. 5 has, for instance, three nozzles.
  • the concrete mix container 1 also has a fill blade 7, which shears and propels the concrete mix, which now may have a very high stiffness, toward the flight 2.
  • the design of the nozzle section can be varied to a large extent allowing minimization of the flow resistance to the concrete mix and use of extremely stiff and coarse-aggregate mixes.
  • the nozzle assembly 3 may, of course, be provided with two nozzles adapted horizontally or vertically adjacent. In this arrangement, the nozzle assembly will correspondingly contain two compressed-air nozzles 4, or groups of nozzles, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Nozzles (AREA)
EP89850173A 1988-05-31 1989-05-25 Concreting jet spray apparatus Withdrawn EP0345237A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI882561A FI882561A (fi) 1988-05-31 1988-05-31 Betongspruta.
FI882561 1988-05-31

Publications (1)

Publication Number Publication Date
EP0345237A1 true EP0345237A1 (en) 1989-12-06

Family

ID=8526553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850173A Withdrawn EP0345237A1 (en) 1988-05-31 1989-05-25 Concreting jet spray apparatus

Country Status (4)

Country Link
EP (1) EP0345237A1 (no)
DK (1) DK248189A (no)
FI (1) FI882561A (no)
NO (1) NO892176L (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951986A1 (fr) * 2009-11-02 2011-05-06 Dev Chanvre Dispositif de projection de beton de faible densite.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR550845A (fr) * 1922-05-01 1923-03-21 Entraîneur-projeteur de matières plus spécialement applicable à la projection de matières fragmentées telles que le béton
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
GB390257A (en) * 1931-12-10 1933-04-06 Ernst Bongardt Improvements in or relating to the conveyance and mixing of granular materials such as concrete or the like
US2261441A (en) * 1939-02-04 1941-11-04 Leslie A Layne Cementing machine
US3370890A (en) * 1966-10-26 1968-02-27 Morgan Mason Edward Pneumatic conveyors for dry portland cement
FR2063236A5 (en) * 1969-09-05 1971-07-09 Garreau Jean Pneumatic projection device for refrac-tory powders
US4106111A (en) * 1977-04-07 1978-08-08 Rose Leo J Improved concrete making and transmission

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR550845A (fr) * 1922-05-01 1923-03-21 Entraîneur-projeteur de matières plus spécialement applicable à la projection de matières fragmentées telles que le béton
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
GB390257A (en) * 1931-12-10 1933-04-06 Ernst Bongardt Improvements in or relating to the conveyance and mixing of granular materials such as concrete or the like
US2261441A (en) * 1939-02-04 1941-11-04 Leslie A Layne Cementing machine
US3370890A (en) * 1966-10-26 1968-02-27 Morgan Mason Edward Pneumatic conveyors for dry portland cement
FR2063236A5 (en) * 1969-09-05 1971-07-09 Garreau Jean Pneumatic projection device for refrac-tory powders
US4106111A (en) * 1977-04-07 1978-08-08 Rose Leo J Improved concrete making and transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951986A1 (fr) * 2009-11-02 2011-05-06 Dev Chanvre Dispositif de projection de beton de faible densite.

Also Published As

Publication number Publication date
NO892176D0 (no) 1989-05-30
DK248189D0 (da) 1989-05-22
FI882561A (fi) 1989-12-01
NO892176L (no) 1989-12-01
FI882561A0 (fi) 1988-05-31
DK248189A (da) 1989-12-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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