US3672646A - Pneumatic cement gun machine - Google Patents

Pneumatic cement gun machine Download PDF

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Publication number
US3672646A
US3672646A US134190A US3672646DA US3672646A US 3672646 A US3672646 A US 3672646A US 134190 A US134190 A US 134190A US 3672646D A US3672646D A US 3672646DA US 3672646 A US3672646 A US 3672646A
Authority
US
United States
Prior art keywords
cement
hopper
bowl
transport
transport bowl
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 - Lifetime
Application number
US134190A
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English (en)
Inventor
James D Burtin
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.)
Detroit Tool and Engineering Co
Original Assignee
Detroit Tool and Engineering Co
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 Detroit Tool and Engineering Co filed Critical Detroit Tool and Engineering Co
Application granted granted Critical
Publication of US3672646A publication Critical patent/US3672646A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28C5/1238—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 for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1253—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 for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with discharging devices
    • B28C5/1261—Applying pressure for discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0454—Volumetric measuring devices, e.g. for consecutively delivering predetermined volumes of ingredients
    • B28C7/0459—Volumetric measuring devices, e.g. for consecutively delivering predetermined volumes of ingredients the ingredients being first supplied into measuring chambers, e.g. containers or skips
    • B28C7/0468—Volumetric measuring devices, e.g. for consecutively delivering predetermined volumes of ingredients the ingredients being first supplied into measuring chambers, e.g. containers or skips the measuring chambers being provided on a rotating drum
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
    • G01F11/24—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for fluent solid material

Definitions

  • a cement gun machine has a hopper subtended by a rotary transport bowl which is divided into radial compartments.
  • the bowl receives dry cement mixture from the hopper, and moves Mu -.-l 0 d M .mF N B it to a station where the mixture is pneumatically discharged into a delivery hose.
  • a hood structure within the hopper traps cement dust and prevents it from escaping into the ambient at- References Cited mosphere.
  • Means are provided 7 for introducing measured quantities of accelerator material into the cement mixture in the transport bowl.
  • the present invention stems from the need for reducing the particulate matter that normally escapes from shotcrete machines of heretofore prevailing construction, whereby to improve atmospheric conditions in the vicinity of the machines.
  • Another achievement of the present invention is the provision of improved means for introducing an accelerator agent into the cement mix in a way that reduces tendency of the cement to cake while in the machines, or to foul machine surfaces.
  • a concrete gun machine of the character described including a hopper providing a mixing chamber and rotary bowl having radial compartments for receiving and conveying the material to apressurizing zone below a fixed sealing plate, means are provided for preventing pressurized air that may be carried with the rotating distributor bowl beyond the discharge port from escaping to the outside atmosphere through the body of material in the hopper.
  • Another object is directed to improvements for facilitating assembly and disassembly of the machine as for cleaning and servicing purposes.
  • Yet another object resides in improved provisions for depositing metered quantities of an additive to the cement mixture for purposes of accelerating the setting time mixture.
  • FIG. 1 is a prospective view of the machine of the invention with portions thereof removed for purposes of illustration;
  • FIG. 2 is a sectional view taken at a vertical plane indicated by line 2-2 ofFIG.
  • FIG. 3 is a top plan view of the transport bowl
  • FIG. 4 is a perspective view of the lower hopper section with certain discharge fittings separated therefrom for purposes of illustration;
  • FIG. 5 is a side elevational view of the machine
  • FIG. 6 is a side elevational view, partly in section, of the auxiliary hopper for accelerator material
  • FIG. 7 is a sectional view taken at line 7-7 of FIG. 6.
  • the means shown include a wedge block 15a on the hopper wall, which block is moved, when the hopper is turned relative to the base plate, into and out of wedging engagement with the arm of a C- clamp 15b on that plate.
  • a transport bowl 16 that carries small batches of the dry mix from a chute at one side to a discharge station at the opposite side of the hopper.
  • Bowl 16 is formed to provide an annular chamber which is divided by radial partitions 17 into a ring of radial pockets 18.
  • the pockets 18 have rounded bottoms 19.
  • An annular partition 20 transversely intersects the pockets 18 and extend downwardly therein to a plane spaced above the rounded pocket bottoms 19.
  • the bowl pockets 18 are, in effect, U-shaped passages with outer legs designated 18a and inner legs 18b, which terminate in upwardly facing openings 22 and 23, (FIG. 3), respectively.
  • a circular wear-plate 24 having the form of a grid, the plate 24 being provided with rings of outer and inner openings that conform in size and shape to the immediately underlying openings 22 and 23 of the bowl hopper 16.
  • the distributor bowl l6 and its wear-plate 24 are mounted on and keyed to the upper end of a vertical drive shaft 27 that projects upwardly through the base plate 10.
  • a vertical drive shaft 27 that projects upwardly through the base plate 10.
  • transmission means 29 that operatively interconnect shaft 27 with a drive motor 30, (FIG. 5).
  • Shaft 27 has a threaded stud at its upper end to receive the base portion 32 of a vertical agitator post 33.
  • the said post is provided with a pair or more of paddles or agitator arms 34, these being located in the central region of the upper hopper section 13b.
  • the agitator post 33 has an integral cap block 33a formed to provide flat, wrenchreceiving surfaces that facilitate the securement and removal of the post from the drive shaft.
  • the base 32 of the post functions to clamp the transport bowl and its wear-plate in place onto the drive shaft 27.
  • the hood structure has a top plate 35 which is spaced above the distributor bowl and is fixed, as by welding, to the hopper wall, in the plane of the junction between the upper and lower hopper sections 13a and 13b.
  • Plate 35 constitutes a floor for the upper portion of the hopper and has an arcuate marginal recess or opening 36 through which the mix in the hopper drops into the chute 37, and therefrom to and through the bowl openings 22.
  • Chute 37 is formed between the hopper side wall and a skirt 38 that depends from the top plate 35.
  • the chute 37 has end walls that extend radially from the end edges of the skirt 38 to the outer wall of the hopper. Circumferentially, the chute 37 extends through an arc of approximately
  • the top plate 35 of the hood has a circuit central opening to accommodate the agitator post, and a short up-standing tube section 40 fixed to the plate coacts with a cup-shaped cap 41 on the agitator post, to prevent cement mix from entering the space within the hood structure.
  • the cap 41 rotates with post 33 and has radial agitator arms 42 that augment movement of the mix into the chute 37.
  • the rotating transport bowl 16 moves the cement mix in the bowl pockets to a discharge compartment 43, (FIG. 4) located within the hood structure diametrically opposite the chute 37.
  • Compartment 43 is generally wedge-shaped in plan and spans an angle of about 45, encompassing several pairs of the bowl openings 22, 23.
  • the compartment 43 is fronted by a rectangular opening in the lower hopper section, and is formed by and between radial side walls 430 and an inner or back wall 43b. These compartment walls are welded to, and extend downwardly from the hood top plate and their lower margins closely approach the upper surface of the bowl wear-plate.
  • a discharge head 45 Disposed within compartment 43 is a discharge head 45, comprising a wedge-shaped orifice plate 36 having two openings therein that register respectively with the bowl openings 22 and 23. Pipe fittings 49 and 50 are mounted on the orifice plate with their inner ends in communication respectively with the plate openings.
  • the discharge head 45 is detachable from the hopper and is normally held in place by clamps, one thereof, indicated at 52, comprising a clamp screw 52a, and a threaded collar 52b which is welded to the hopper wall.
  • Clamp 52a is angularly arranged to have its lower end bear downwardly upon the orifice plate 46 with sufficient pressure to provide an effective seal between orifice plate and wear-plate 24 without placing an undue frictional load on the rotating bowl.
  • Another clamp includes a screw part 53a and a clamp member 5312 arranged to prevent the orifice plate from working out of the discharge compartment.
  • the pipe fitting 49 is connected to an air pressure hole 54, and pipe fitting 50 is connected to the hose for conducting the cement mix, blasted from the bowl pockets and into pipe 50, to a discharge nozzle, not shown. Water from a separate hose is injected into the stream of discharging cement mix at the nozzle.
  • An undesirable condition heretofore attending the operation of concrete gun machines of the type described herein is that pressurized air is carried by the rotating bowl beyond the discharge station and released into the body of cement mix in the hopper.
  • the leakage air, escaping through the open top of the hopper, carries with it the fines of the cement mix and creates a severe dust condition in the vicinity of the machine.
  • the dust laden atmosphere presents a serious health hazard to the operating personnel.
  • the condition is aggravated where the machines are used in closed areas, as in mine shafts and tunnels, an application where guncreting, except for the above noted fault, has proven an effective and efficient method for producing a cement lining shell on the wall surfaces.
  • Numeral 60 designates a pipe fitting which is in communication with the suction line leading to interior of the hood and connected to a dust collector (not shown).
  • Another novel and improving feature of the present invention is the provision of means for introducing measured quantities of an accelerator agent to the concrete mix.
  • Accelerator agents for concrete and cement are well known and used in the trade. Such agents cause the cement to set up very rapidly following the addition of water to the mix, and use thereof is especially desirable where the cement is being applied to a wall or ceiling surface.
  • an auxiliary hopper 70 for holding a supply of the accelerator material.
  • Hopper 70 is or may be mounted on the side of the main hopper 13.
  • a vertical shaft 71 on which is mounted, within the base of the hopper, a shutter disc 72 for controlling and regulating the flow of the accelerator material to a discharge port 73 in the floor of the hopper.
  • the shaft 71 is geared or belted to the drive shaft 27 for the main hopper, so that plate 71 operates to release measured batches of accelerator material in timed relation to the movement of the transport bowl 16.
  • a conduit 74 conducts the accelerator agent to the transport bowl, its discharge end being located immediately above the bowl openings 22. Agitator blades 75 are securedto and rotated by the shaft 71. It will appear that measured quantities of the accelerator agent are added to the cement mix in the transport bowl shortly before the material is expelled therefrom. The minimal time that the accelerator is in contact with the mix while in the machine reduces the tendency of the mix to cake and foul surfaces of machine parts.
  • a cement gun machine comprising:
  • a hood within said hopper providing a substantially closed chamber above the transport bowl, said bowl preventing air from said pneumatic means from escaping upwardly through the body of said cement mixture in said hopper.
  • a cement gun machine as set forth in claim 1 including an exhaust pipe communicating with said chamber.
  • hood has a top wall having a central opening, an upstanding collar on said top wall extending around said opening, an agitator post extending vertically from said transport bowl and through said collar, a closure cap surrounding said collar, mounted on said agitator post, and agitator blades carried by said post and overlying the top wall of the hood.
  • hood includes wall portions forming a chute at one side of the hopper, leading to the transport bowl, and wall portions at the opposite side of the hopper defining a cement discharging compartment.
  • a cement gun machine as set forth in claim 1 including an auxiliary hopper for accelerator material, said auxiliary hopper being adapted and arranged to release accelerator material therefrom to the cement mixture in the machine.
  • a cement gun machine comprising:
  • d. means forming a chute for conducting mixture from the hopper to said transport bowl
  • conduit means for conducting accelerator material from said auxiliary hopper to the transport bowl are provided.
  • the cement gun machine set forth in claim 10 including means for controlling the flow of accelerator material from said container to the transport bowl.
  • conduit means conducts accelerator material into the transport bowl at a point adjacent to the point of discharge of the cement mixture from the transport bowl.
  • a cement gun machine comprising:
  • an auxiliary hopper for holding accelerator material to be added to the cement mixture in the machine
  • valve means operatively connected to said drive means for coordinating the rate of flow of cement accelerator material with the rotation of said transport bowl.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
US134190A 1971-04-15 1971-04-15 Pneumatic cement gun machine Expired - Lifetime US3672646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13419071A 1971-04-15 1971-04-15

Publications (1)

Publication Number Publication Date
US3672646A true US3672646A (en) 1972-06-27

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Application Number Title Priority Date Filing Date
US134190A Expired - Lifetime US3672646A (en) 1971-04-15 1971-04-15 Pneumatic cement gun machine

Country Status (10)

Country Link
US (1) US3672646A (xx)
JP (1) JPS5137696B1 (xx)
AU (1) AU467261B2 (xx)
BR (1) BR7202132D0 (xx)
CA (1) CA965081A (xx)
FR (1) FR2136409A5 (xx)
GB (1) GB1348596A (xx)
IT (1) IT957620B (xx)
SE (1) SE379225B (xx)
ZA (1) ZA722455B (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940119A (en) * 1974-06-06 1976-02-24 Ridley Ian M Rotor gun for the air placement of granular and cementitious materials
US4440499A (en) * 1980-03-05 1984-04-03 Engineering Resources Development Office Method and apparatus of blowing mortar or the like
EP0150446A2 (de) * 1983-12-23 1985-08-07 Pfister GmbH Vorrichtung zum kontinuierlichen, gravimetrischen Dosieren und pneumatischen Fördern von schüttfähigem Gut
EP0592793A1 (de) * 1992-10-15 1994-04-20 PFT Putz- und Fördertechnik GmbH & Co. KG Verfahren und Vorrichtung zum Auftragen eines Mörtels oder Betons durch Spritzen
US5433519A (en) * 1993-08-26 1995-07-18 Pft Putz Und Fordertechnik Gmbh Method and apparatus for the application of mortar or concrete by spraying
US5733039A (en) * 1995-10-09 1998-03-31 Sika Equipment Ag Sealing plate for sealing a rotor unit
US6439394B1 (en) * 2000-02-17 2002-08-27 Sortech Separation Technologies, Ltd. Separator for dry separation of powders
NL1018100C2 (nl) * 2001-05-18 2002-11-19 Stork Titan Bv Inrichtingen voor het bereiden van stroombaar beslag en doseereenheid.
WO2018120220A1 (zh) * 2016-12-30 2018-07-05 陈乾勇 一种移动式建筑材料搅拌装置
CN110053164A (zh) * 2019-05-06 2019-07-26 许昌学院 一种环保型道路施工用防尘搅拌装置
CN113815117A (zh) * 2021-10-14 2021-12-21 徐州安高新型建材产业技术研究院有限公司 一种水泥基复合屏蔽材料的搅拌装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5359742A (en) * 1976-11-10 1978-05-29 Plibrico Japan Co Ltd Spraying machine for cement mix
FR2482062A1 (fr) * 1980-05-09 1981-11-13 Ker France Dispositif de stockage, de manutention et de distribution de materiaux pulverulents
CH650307A5 (de) * 1981-05-27 1985-07-15 Intradym Masch Ag Betonspritzmaschine.
SE457348B (sv) * 1985-05-09 1988-12-19 Abb Stal Ab Pneumatiskt transportsystem med materialmatare
FR2668949B1 (fr) * 1990-11-09 1993-08-06 Sedia Sarl Dispositif d'injection de granules dans un courant de fluide a debit assez eleve et son application a la distribution de granules a des animaux.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1663206A (en) * 1923-06-25 1928-03-20 Macrae Thomas Method of and means for making and delivering quantitative mixtures
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
US2637539A (en) * 1949-04-01 1953-05-05 John M Crom Distribution of solids in air
US3096968A (en) * 1960-09-14 1963-07-09 Kempthorne James Lewis Process for making concrete for application by spray gun

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1663206A (en) * 1923-06-25 1928-03-20 Macrae Thomas Method of and means for making and delivering quantitative mixtures
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
US2637539A (en) * 1949-04-01 1953-05-05 John M Crom Distribution of solids in air
US3096968A (en) * 1960-09-14 1963-07-09 Kempthorne James Lewis Process for making concrete for application by spray gun

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940119A (en) * 1974-06-06 1976-02-24 Ridley Ian M Rotor gun for the air placement of granular and cementitious materials
US4440499A (en) * 1980-03-05 1984-04-03 Engineering Resources Development Office Method and apparatus of blowing mortar or the like
EP0150446A2 (de) * 1983-12-23 1985-08-07 Pfister GmbH Vorrichtung zum kontinuierlichen, gravimetrischen Dosieren und pneumatischen Fördern von schüttfähigem Gut
EP0150446A3 (en) * 1983-12-23 1986-01-02 Pfister Gmbh Device for the continuous gravimetric and pneumatical conveying of bulk goods
EP0592793A1 (de) * 1992-10-15 1994-04-20 PFT Putz- und Fördertechnik GmbH & Co. KG Verfahren und Vorrichtung zum Auftragen eines Mörtels oder Betons durch Spritzen
US5433519A (en) * 1993-08-26 1995-07-18 Pft Putz Und Fordertechnik Gmbh Method and apparatus for the application of mortar or concrete by spraying
US5733039A (en) * 1995-10-09 1998-03-31 Sika Equipment Ag Sealing plate for sealing a rotor unit
US6439394B1 (en) * 2000-02-17 2002-08-27 Sortech Separation Technologies, Ltd. Separator for dry separation of powders
NL1018100C2 (nl) * 2001-05-18 2002-11-19 Stork Titan Bv Inrichtingen voor het bereiden van stroombaar beslag en doseereenheid.
WO2002094424A1 (en) * 2001-05-18 2002-11-28 Stork Titan B.V. Devices for preparing a flowable batter and dosage unit
US20040233775A1 (en) * 2001-05-18 2004-11-25 Van Der Eerden Maria Hendricus Franciscus Jacobus Device for preparing a flowable batter and dosage unit
WO2018120220A1 (zh) * 2016-12-30 2018-07-05 陈乾勇 一种移动式建筑材料搅拌装置
CN110053164A (zh) * 2019-05-06 2019-07-26 许昌学院 一种环保型道路施工用防尘搅拌装置
CN113815117A (zh) * 2021-10-14 2021-12-21 徐州安高新型建材产业技术研究院有限公司 一种水泥基复合屏蔽材料的搅拌装置

Also Published As

Publication number Publication date
GB1348596A (en) 1974-03-20
DE2218292A1 (de) 1972-11-09
FR2136409A5 (xx) 1972-12-22
SE379225B (xx) 1975-09-29
DE2218292B2 (de) 1975-07-03
IT957620B (it) 1973-10-20
ZA722455B (en) 1972-12-27
CA965081A (en) 1975-03-25
AU4099472A (en) 1973-10-18
AU467261B2 (en) 1973-10-18
JPS5137696B1 (xx) 1976-10-18
BR7202132D0 (pt) 1973-06-14

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