WO2002008096A1 - Machine et procede de pulverisation de materiaux - Google Patents

Machine et procede de pulverisation de materiaux Download PDF

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Publication number
WO2002008096A1
WO2002008096A1 PCT/GB2001/003288 GB0103288W WO0208096A1 WO 2002008096 A1 WO2002008096 A1 WO 2002008096A1 GB 0103288 W GB0103288 W GB 0103288W WO 0208096 A1 WO0208096 A1 WO 0208096A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine according
machine
base unit
hopper unit
unit
Prior art date
Application number
PCT/GB2001/003288
Other languages
English (en)
Inventor
Terje Lindberg
Original Assignee
Burrows, Anthony, Gregory
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 Burrows, Anthony, Gregory filed Critical Burrows, Anthony, Gregory
Priority to AU2001277610A priority Critical patent/AU2001277610A1/en
Publication of WO2002008096A1 publication Critical patent/WO2002008096A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B65G53/4608—Turnable elements, e.g. rotary wheels with pockets or passages for material
    • B65G53/4616—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning parallel to flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/32—Conveying concrete, e.g. for distributing same at building sites
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck

Definitions

  • This invention relates to spraying of material, especially building material.
  • a conventional method of applying mortar or concrete is known as the wet spray method in which a pre-mixed wet batch of mortar or concrete is loaded into the spraying machine which sprays the batch onto the relevant surface.
  • the wet spray method in which a pre-mixed wet batch of mortar or concrete is loaded into the spraying machine which sprays the batch onto the relevant surface.
  • One generic type of machine in common use for this method has a hopper from which dry, pre-mixed mortar or concrete flows, via a rotating paddle which keeps the material fluid, into a rotating feeder drum or disc. From here, the dry material is blown by compressed air via a rubber transfer plate through a hose to a mouthpiece. In the mouthpiece, and just prior to ejection from its nozzle, the dry material is mixed with water. The now wet mortar or concrete is thus then sprayed onto the substrate at which the nozzle is aimed.
  • the composition of the wet mortar or concrete depends on the settings of the machine, which in turn depends on the "feel" of the operator. The window for acceptable material composition is quite narrow, because the material cannot vary much in practice since it would otherwise fall off the surface to be sprayed, or run, or be too dry.
  • US-A-5094403 describes a concrete spraying gun having a rotatable multi-chamber drum, with a top feed hopper for receiving a dry concrete mixture in a chamber, and a bottom outlet pipe for discharging the dry concrete mixture from the chamber, the outlet pipe having a compressed air connector for connection to a compressed air source.
  • the upper surface of the drum adjoins a gasket having one or more openings fixed to a clamping plate.
  • the lower surface of the drum adjoins a gasket which is fixed to a base plate.
  • the hopper and the outlet pipe are spaced such that a chamber which communicates directly with the hopper can be moved so that it no longer communicates with the hopper but communicates with the outlet pipe.
  • the clamping plate has a compressed air connector for blowing the dry mixture out into the outlet pipe.
  • An opening is present for allowing compressed air to escape from the chambers, which opening is located between the position when the chamber communicates with the outlet pipe and the position when it communicates with the hopper outlet.
  • a connection is provided in the upper gasket which connects to at least one chamber empty of concrete and one chamber containing concrete to equalise the pressure between the chambers.
  • US-A-4376600 describes apparatus for feeding course- grained, lumpy dry materials from a hopper to an outlet chamber into which materials are blown. It has two drums that rotate in unison about a common vertical axis and have circumferentially arranged material chambers that are coaxial with one another. A plate between the two drums has a passage with which the chambers of the drums can be brought into register by rotation.
  • the upper drum has a plurality of air chambers which receive compressed air conducted through the passage from each of the chambers of the lower drum.
  • a connecting channel serves to increase the pressure on the outer side of the chambers of the lower drum. Multiple openings into the atmosphere discharge the chambers of the upper drum. With this arrangement the pressure drop is reduced and the distance between a pressurised drum chamber and an unpressurised one is substantially increased, thereby reducing dust production and wear.
  • US-A-4462719 describes a concrete gun comprising in combination a drum, a plurality of chambers arranged in the drum in a circular array and extending parallelly to the axis of the drum, sealing plates of elastomeric material engaging the ends of the drum and closing the chambers, a vent orifice comprising a recess in one of the sealing plates, the recess being located to be successively in register with the chambers upon rotation of the drum, an air filter communicating the recess with the surrounding air and a clearing device for the recess including an actuating element extending from the recess to outside the gun.
  • the vent orifice can be periodically cleaned of deposited residue without danger or having to shut down the machine.
  • US-A-4440499 describes a method and an apparatus for blowing mortar or concrete on the feeding of compressed air, in which dry-mixed materials are quantitatively jetted from a nozzle at a blowing machine, and liquid is supplied in a determined amount depending on the compressed air current through the nozzle, so that grains of the material are mixed with the liquid while the materials are being fed, and the property of such materials is changed from a dry condition to a wet condition of a pre-determined water-cement ratio, and the wet material is jetted from a nozzle at the end of a hose.
  • a feeder disc which is a thick, metal, horizontal, wheel-like disc which contains a number of cavities recessed into its upper surface and separated by spoke-like divisions.
  • a rubber transfer plate presses against the upper face of the feeder disc and has one aperture to admit air to the feeder disc and another through which the dry mortar or concrete material is blown into the hose leading to the nozzle.
  • the rubber transfer plate is pressed hard against the upper surface of the disc by a hydraulic screw arrangement.
  • the cavities serve as temporary receptacles for the dry mortar or concrete from the hopper. The material in each cavity is transferred to the hose leading to the nozzle by being blown out of each cavity in turn as it passes under the apertures in the rubber transfer plate.
  • Such conventional concrete spray machines are quite heavy and cumbersome, weighing upwards of 250kg. They also have parts which are subjected to heavy wear and which thus have to be serviced or replaced at frequent intervals.
  • the main wearing parts are the rubber transfer plates. Others of the main wearing parts are the feeder drums or discs themselves. In the case where there is a rubber seal which lies in part against the circumference of the feeder disc and in part against the outer curved edge of the rubber transfer plate, this rubber seal also has to be frequently replaced.
  • Concrete spray machines are in popular use, and are often transported from one building site to another. Conventional machines are not easily taken apart after a period of use owing to seizure of the relevant parts, and are therefore usually transported as they stand. This entails the use of a comparatively large van or lorry owing to the height of the machine, and in lifting of the relatively heavy machine.
  • a machine for spraying material including an interior part to which access is required, and a cover openable to allow access to said interior part, said cover comprising an outer panel and an inner seal detachably connected to said outer panel.
  • a machine for spraying material including an interior part to which access is required, and a cover readily openable to allow access to said interior part.
  • a machine for spraying material comprising a hopper unit, a base unit, and a readily releasable arrangement connecting said hopper unit detachably to said base unit.
  • apparatus comprising:- a machine for spraying material, comprising a hopper unit, a wheeled base unit, and a releasable arrangement connecting said hopper unit detachably to said base unit, and a ramp device for use in wheeling said base unit, in a condition detached from said hopper unit, onto a vehicle.
  • a method comprising providing a machine for spraying material, detaching a hopper unit of machine from a base unit of said machine, transporting said hopper unit and said base unit in a condition detached from each other, and reattaching said hopper unit to said base unit.
  • a material spraying machine whereof a hopper unit and a base unit are easily put together or subsequently dismantled, allowing easier maintenance of the machine as well as reducing the vertical height of the machine for ease of transportation.
  • a machine for spraying building material including an outflow duct and an actuating arrangement for controlling a plurality of functions of said machine, said actuating arrangement being located exteriorly of said duct in an outlet region of said duct.
  • an operator can control a plurality of functions of the machine from his working location, as opposed to the location of the machine.
  • the functions controllable from the working location may be any two of supply of dry material to a nozzle at the working location, supply of air for transporting the dry material to the nozzle, and supply of liquid, particularly water, to mix with the dry material.
  • a machine for spraying material including a handle for use in manually pulling said machine over the ground or floor, said handle having an outer end for grasping by the puller and an inner end mounted for turning about a substantially horizontal axis, and an abutment disposed above said handle at a location outwardly of said inner end and limiting upward turning of said handle in order to allow the puller to lift the inner end of the handle relative to the ground or floor.
  • a machine for spraying material having any one or more of the following features :- a material-receiving hopper of stainless steel, a synchronous electric motor, an electronic frequency changer arranged to control the speed of said motor, and, optionally, a fixed-ratio gearbox arranged to be driven by said motor, and, optionally, an aluminium base, and an access cover comprised of at least two metal strips disposed face-to-face with each other.
  • a method of spraying building material comprising delivering fluid substance, obtaining from said substance being delivered data relating to said substance, and utilising said data.
  • a machine for spraying building material comprising a delivery arrangement for delivering fluid substance, and an obtaining arrangement for obtaining from said substance being delivered data relating to said substance, there being a utilising device serving to utilise said data.
  • the data obtained may, for example, be the rate of delivery of the substance, whilst the utilising of the data may comprise one or more of displaying the data or information derived from the data, recording the data or information derived therefrom, and using the data to produce an audible and/or visible warning.
  • Figure 1 is a side view of a concrete spraying machine
  • Figure 2 is a perspective view of part of the machine
  • Figure 3 is a diagrammatic, fragmentary view similar to Figure 1 of the machine, but partly in vertical section and with parts omitted for the sake of clarity,
  • Figure 4 is a detail of Figure 3
  • Figure 5 is a perspective view of parts of a hopper unit of the machine in a dismantled state
  • Figure 6 is a diagrammatic, fragmentary view of an outflow duct of the machine
  • Figure 7 shows a diagrammatic horizontal section through an access cover of the machine
  • Figure 8 shows a section taken on the line VIII-VIII of Figure 3,
  • Figure 9 is a perspective view of an outlet end region of the outflow duct and of a control unit of the machine
  • Figure 10 is a view similar to Figure 1 but with parts of the machine omitted
  • Figure 11 is a fragmentary, perspective view of a ramp for use with the machine
  • Figure 12 is a fragmentary side view illustrating a base unit of the machine being loaded onto a vehicle by way of the ramp, and
  • Figure 13 is a view similar to Figure 1, but fragmentary and with parts omitted, of a slightly modified version of the machine.
  • a spraying machine 50 has a hopper unit 1 comprised of an upper conical part la into which dry mortar or concrete is poured and a lower non- conical part lb.
  • a rotating paddle 2 helps to ensure that the dry material flows into cavities 3 in a feeder disc 4. Material in the cavities 3 is blown out of the cavities by compressed air which is admitted through an aperture 5 in a rubber transfer plate 6.
  • the rubber transfer plate 6 is pressed against the upper surface of the feeder disc 4 by means of hydraulic pistons 7 operated by screws 7a and pressing against a steel spreader plate 8 provided with two apertures 5' for entry of compressed air and 9' for exit of the material and the compressed air.
  • the compressed air is supplied via a hose 60 leading to the aperture 5 1 from an elbow connector 62 at an aluminium box 64 containing a motor- operated control valve (not shown) for the compressed air which is supplied by a portable compressor machine (not shown) via a hose (not shown) to an elbow connection 66.
  • the non-conical part lb of the wall of the hopper unit 1 is formed with a sectoral recess providing a hatch 13 for access to the disc 4 and the plates 6 and 8.
  • the hydraulic pistons 7 react against an overhang 54 of the hatch 13.
  • the material leaves the cavities through an aperture 9 in the rubber transfer plate 6 and the corresponding aperture 9' in the plate 8 and is blown through an outflow duct consisting of a hose connection 10, an air hose 11 connected to the connection 10, and an outlet nozzle 12 on the hose 11.
  • the lower edge ⁇ one of the hatch 13 is sealed by means of a hatch cover 15 including a rubber seal 14 which partly rests against the circumference of the upper part of the disc
  • the cover 15 also includes two concentrically curved strip-form metal panels 15a and 15b, which are fastened together by screws 52 or any other convenient means.
  • the rubber seal 14 is fastened, preferably by vulcanising or gluing, to the innermost panel 15b.
  • the cover 15 has a hinge member 16 integral with one end of the outermost panel 15a and is of a curvature which matches that of the edges of the plates 6 and 8 and the disc 4.
  • the other end of the cover 15 is provided with a strong hook 17 on the outer surface of the outer panel 15a designed to receive a locking bar 18 of a heavy-duty snap latch which operates by means of a lever action.
  • the hinged hatch cover 15 allows easy access for this purpose since it is easily swung aside without the use of tools.
  • the hatch cover 15 is also considerably lighter in weight than conventional hatch covers.
  • the hopper unit 1 can be easily separated from the base unit 19 of the machine 50. This results in a much reduced height of the machine and in a division of its total weight, both of which allow the entire machine 50 to be easily transported in a small van or medium-sized estate car. It also allows easy access to the feeder disc 4 and associated parts for servicing and/or replacement.
  • a shaft 20 which simultaneously rotates the feeder disc 4 and the paddle 2 of the machine is provided with a bayonet lock 21 which allows the shaft to transfer load in one rotational direction, but which results in separation of the paddle 2 from the shaft 20 when rotated in the opposite direction.
  • This action disconnects the paddle 2 from the underlying machinery and leaves the entire hopper unit free for removal from the base unit 19 by unscrewing nuts 22 on each of three screws on an upper surface of the base unit 19.
  • the nuts 22 serve the purpose of readily releasably fastening the hopper unit to the base unit 19 and are provided with respective handles 23, which allow them to be operated without tools, and with clamping flanges.
  • the non-conical part lb has its lower edge provided with three flat, hook-like, horizontal brackets 24.
  • the machine 50 has a lifting eye 58 attached to the conical part la of the hopper unit 1 so that the machine 50 can be lifted by a crane or hoist.
  • the lifting eye 58 is positioned so that, as the machine 50 is lifted off the ground, the machine does not tilt significantly, so that any material that may still be in the hopper unit 1 does not spill out.
  • the machine 50 is controlled, via an electrical cable 56, from a control box 25 the underside of which is shaped so as to fit over the nozzle 12, as shown in Figure 9.
  • the box 25 is provided with a continuously adjustable air supply control 26, an on/off switch 27 which energises or de- energises the speed control circuitry of an electric motor 44 which drives the feeder disc 4, and a control 28 for continuously adjusting the speed of the electric motor 44 and hence regulating the feeding rate of the dry material to the hose connection 10 and the hose 11 leading to the nozzle 12.
  • the adjustable air supply control 26 operates a motor-driven air valve situated at a convenient location on the machine.
  • the on/off switch 27 controls the supply of electrical current to the electronic speed regulation circuitry (not shown) contained in the box 64.
  • the adjustment of the rotational speed of the motor 44 by the control 28 is achieved by electronically altering the frequency of the alternating current supplying the motor 44 which is a brushless synchronous motor.
  • the speed at which conventional machines operate is controlled by changing gears in a gearbox, or by using a variomatic belt-driven speed changer. Both of these arrangements are bulky, comparatively heavy, and mechanically complicated.
  • the use of electronic frequency changing and a synchronous motor 44 allows a fixed- ratio gearbox 46 of simpler, lighter and more compact construction to be used.
  • the machine 50 can be powered by an ordinary domestic single-phase power supply fitted with a 16 amp fuse.
  • the operator has control over the water supply by operating a stopcock 68 at the nozzle.
  • the total weight of the machine 50 has been greatly reduced compared to conventional machines in a number of ways.
  • the material of the hopper is conventionally heavy gauge steel whereas, the present hopper is constructed of stainless steel. Apart from being easier to clean, the increased stiffness of stainless steel allows thinner and lighter gauges to be used. In the conical part la a gauge of 1.2 mm has been found to be sufficient and in the non-conical part lb, a gauge of 4 mm has been found to be sufficient.
  • the use of the electronic frequency changer which controls the speed of the motor 44 located in the base unit 19 allows a simple gearbox 46 to be used instead of the much bulkier and heavier speed-changing gear boxes or belt-driven variomats which are conventionally used.
  • the resulting compactness of the motor 44 and the gearbox 46 allows them to be built into a housing 29 of the base unit 19 which can be constructed from an aluminium box 29a and an aluminium plate 29b.
  • the box 29a has been found to be sufficiently strong when constructed from 3mm aluminium plate welded so as to form a box of approximately 750mm x 400mm x 180mm outer dimensions, and closed by a 10 mm thick aluminium plate 29b suitably drilled to accommodate the shaft 20, sundry necessary wires and other fittings, and fitted with two 30 x 50 mm massive aluminium beams 48 to which the electric motor and gearbox are fixed.
  • the plate 29b is fastened to a flange 30 of the box 29a by screws at intervals around the perimeter, or any other suitable means.
  • the hatch cover 15 is lighter in weight than conventional hatch covers and fifthly, the reduced total weight of the machine 50 allows lighter wheels 31 and 32 and axles to be used.
  • the total reduction in weight achieved by the above- described measures allows the construction of a machine with an output of around 401/min of sprayed concrete, but weighing no more than around 150kg.
  • the weight of the remaining base unit 19 is around 110kg.
  • the base unit 19 can be easily loaded by one person into or onto a vehicle by rolling it on its wheels 31 and 32 up a ramp 33 shown in Figures 11 and 12 which is made from a single metal sheet bent upwards at its two longitudinal edges so as to provide vertical guide walls 40 suitably spaced apart by a horizontal section 42 to accommodate the width of the machine 50. This avoids the need for lifting equipment or for manual lifts to load the machine into or onto a vehicle for transportation.
  • the length of the ramp to allow one less than averagely strong man, or a strong woman, to roll the wheeled section comfortably through a vertical distance of about 0.5m into or onto a vehicle, is about 1.8m. This length allows the ramp to be easily transported alongside the machine in small vans or medium-sized estate cars.
  • Sensors 70 and 72 to measure the rates of air and water supplies are inserted in the respective lines.
  • the sensor 70 measuring the rate of air flow to the openinig 5' is located proximal to the opening 5' and the sensor 72 for measuring the rate of water flow is located in the machine 50.
  • the sensors 70 and 72 are in the form of windmill like devices in housings, and are rotated by the streams of fluids passing through them. The speeds of rotation of the windmills are converted electronically to provide a digital display of the measurements of the amounts of fluids passing through the machine per unit of time.
  • the water stream is made to pass through a conduit 71 in the machine solely for measuring purposes, as this is otherwise unnecessary, the water supply to the conduit 71 being through a hose 73 and the water stream passing from the conduit 71 to the stopcock 68 through a hose 75.
  • the amount of dry material passing through the machine 50 is derived from the volume of the cavities 3 in the feeder disc 4 and the frequency of the power being supplied to the electric motor 44. Since the volume and number of the cavities 3 is fixed in any one machine, the feeding rate of dry material to the hose connection 10 depends virtually only on the speed of rotation of the feeder disc 4 which bears a direct relationship to the control frequency of the supply to the motor 44.
  • the amount of air being used has no bearing on the composition of the wet mixture sprayed, but it is a useful parameter in judging the force of the ejected mixture hitting the surface. It is also extremely useful for reproducing previous spray work.
  • All of the measured values are displayed on a device 74 mounted on top of the machine 50 and including a housing 76 provided with a transparent window 78 which allows digital meters of the device 74 to be easily seen and read.
  • the actual placement of the display device 74 on the machine 50 is not critical, and is more a matter of convenience.
  • the machine 50 is provided with a handle 34 for moving the machine along the ground and to allow lifting of the castor wheel 31 over obstacles.
  • the handle 34 is constructed from two pieces of strong pipe welded or otherwise joined together so as to form a T.
  • the lower end of the T is drilled to accept a hinge bolt 35 which also passes through two parallel sides of an inverted channel piece 36 welded or otherwise fastened to the hopper wall.
  • the handle 34 hangs down at the front of the machine.
  • the base of the channel limits the movement of the handle so that the handle acquires a near horizontal position conducive to pulling or pushing the machine 50 and to lifting the castor wheel 31 over obstacles.
  • a sufficiently strong third horizontal lug 36a is provided immediately above two vertical lugs 36b so that, when the handle 34 is swung upwards, the third lug 37 limits the movement.
  • the hinging of this handle considerably reduces the overall length of the machine, which is of importance when transporting it in or on a vehicle.
  • the improvements described with reference to the drawings result in building material spraying machines which are considerably less bulky and lighter in weight than conventional machines, more easily transported, operated and serviced than conventional machines, and give considerable cost savings in that wear is reduced, and in that time, materials and energy are saved.
  • personnel costs are reduced since the machines are easily operated and transported by one person with higher efficiency than conventional machines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)

Abstract

Machine (50) destinée à la pulvérisation de matériaux de construction, comprenant une unité formant une trémie (1) reliée facilement amovible à une unité de base montée sur roues (19), par l'intermédiaire d'écrous à poignée (22) serrant des supports horizontaux du type à crochet, fixés sur l'unité (1), à l'encontre de la base (19), et par l'intermédiaire d'une fermeture à baïonnette entre une pale à l'intérieur de l'unité de trémie (1) et un arbre qui est monté sur l'unité de base (19) et auquel est fixé un disque d'alimentation. Un couvercle (15) peut être ouvert pour permettre l'accès au disque d'alimentation et comprend un panneau extérieur, un panneau intérieur monté amovible sur le panneau extérieur, et un joint en caoutchouc monté sur le panneau intérieur et étant en partie appliqué contre le disque, et en partie compressé fortement contre une plaque métallique fixe et une plaque fixe en caoutchouc.
PCT/GB2001/003288 2000-07-22 2001-07-23 Machine et procede de pulverisation de materiaux WO2002008096A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001277610A AU2001277610A1 (en) 2000-07-22 2001-07-23 Machine and method for spraying material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0017957.2A GB0017957D0 (en) 2000-07-22 2000-07-22 Improvements in or relating to spraying of material
GB0017957.2 2000-07-22

Publications (1)

Publication Number Publication Date
WO2002008096A1 true WO2002008096A1 (fr) 2002-01-31

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ID=9896105

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PCT/GB2001/003288 WO2002008096A1 (fr) 2000-07-22 2001-07-23 Machine et procede de pulverisation de materiaux

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Country Link
AU (1) AU2001277610A1 (fr)
GB (1) GB0017957D0 (fr)
WO (1) WO2002008096A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118979A1 (fr) * 2004-06-01 2005-12-15 Ocmer Company S.R.L. Pulverisateur mecanique destine a l'industrie du batiment
CN104895084A (zh) * 2015-06-05 2015-09-09 李德安 一种带捋料装置链式混凝土喷射机
AU2021106844B4 (en) * 2021-08-20 2022-03-24 VentSec Pty Ltd Cementitious product applicator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089327B (de) * 1959-04-08 1960-09-15 Franz Jos Waeschle Maschinenfa Schleuse zum Einbringen von koernigen oder pulverigen Stoffen in eine Luftfoerderleitung
US4376600A (en) 1980-05-27 1983-03-15 Aliva Aktiengesellschaft Rotating material feed for apparatus for pneumatic conveying of loose materials
US4440499A (en) 1980-03-05 1984-04-03 Engineering Resources Development Office Method and apparatus of blowing mortar or the like
US4462719A (en) 1981-05-27 1984-07-31 Intradym Maschinen Ag Concrete gun
GB2171670A (en) * 1984-12-06 1986-09-03 Cs Uranovy Prumysl Koncern Machine for supplying particulate material under pressure
US5904303A (en) * 1995-10-09 1999-05-18 Sika Equipment Ag Spray machine with a driven rotor unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089327B (de) * 1959-04-08 1960-09-15 Franz Jos Waeschle Maschinenfa Schleuse zum Einbringen von koernigen oder pulverigen Stoffen in eine Luftfoerderleitung
US4440499A (en) 1980-03-05 1984-04-03 Engineering Resources Development Office Method and apparatus of blowing mortar or the like
US4376600A (en) 1980-05-27 1983-03-15 Aliva Aktiengesellschaft Rotating material feed for apparatus for pneumatic conveying of loose materials
US4462719A (en) 1981-05-27 1984-07-31 Intradym Maschinen Ag Concrete gun
GB2171670A (en) * 1984-12-06 1986-09-03 Cs Uranovy Prumysl Koncern Machine for supplying particulate material under pressure
US5904303A (en) * 1995-10-09 1999-05-18 Sika Equipment Ag Spray machine with a driven rotor unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118979A1 (fr) * 2004-06-01 2005-12-15 Ocmer Company S.R.L. Pulverisateur mecanique destine a l'industrie du batiment
CN104895084A (zh) * 2015-06-05 2015-09-09 李德安 一种带捋料装置链式混凝土喷射机
AU2021106844B4 (en) * 2021-08-20 2022-03-24 VentSec Pty Ltd Cementitious product applicator

Also Published As

Publication number Publication date
GB0017957D0 (en) 2000-09-13
AU2001277610A1 (en) 2002-02-05

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