WO2006005946A1 - Apparatus and method for manufacturing concrete - Google Patents
Apparatus and method for manufacturing concrete Download PDFInfo
- Publication number
- WO2006005946A1 WO2006005946A1 PCT/GB2005/002737 GB2005002737W WO2006005946A1 WO 2006005946 A1 WO2006005946 A1 WO 2006005946A1 GB 2005002737 W GB2005002737 W GB 2005002737W WO 2006005946 A1 WO2006005946 A1 WO 2006005946A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concrete
- components
- making apparatus
- delivery
- processor
- Prior art date
Links
Classifications
-
- 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
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/502—Vehicle-mounted mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
-
- 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
- B28C7/0481—Plant for proportioning, supplying or batching
- B28C7/0486—Plant for proportioning, supplying or batching the plant being mobile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/04—General arrangement or layout of plant the plant being mobile, e.g. mounted on a carriage or a set of carriages
- B28C9/0454—Self-contained units, i.e. mobile plants having storage containers for the ingredients
- B28C9/0463—Self-contained units, i.e. mobile plants having storage containers for the ingredients with a mixing discharge trough with a free end, e.g. provided with a mixing screw or pivotable about a vertical or horizontal axis
Definitions
- the invention relates to an apparatus and method for manufacturing concrete on-site. More particularly, but not exclusively, the invention relates to a concrete making vehicle for manufacturing concrete on-site.
- mixer equipment for manufacturing concrete.
- the first, more traditional type of mixer equipment is known as a batching plant, which supplies barrel or drum mixers.
- the operator will select the required amount and slump of concrete for a particular application.
- the appropriate amounts of each component are then added to the mixing barrel and, after mixing, a batch of concrete is provided.
- An advantage of a batch mixer is that the mixer provides a high quality, reliable concrete mix, because the aggregate and cement are very accurately measured by weight prior to mixing. Many end users prefer the batch mixing process because of the guaranteed high quality mix it can provide .
- a disadvantage of a batch mixer is that there is no opportunity to alter the concrete mix after the components have been added and the mixing has begun; if a different slump is required (for example at a different job- site or because a given job-site has different requirements from those expected) a whole new batch must be produced.
- a further disadvantage of a batch mixer is that the concrete may deteriorate in transit, especially with highly aerated concrete .
- volumetric mixers currently available is that the quality and reliability of the concrete mix may not be very high, since the proportions of the components are dependent on the skill of the operator. For example, a gate on a particular component hopper may be set incorrectly, thereby resulting in an inappropriate mix for the particular application or all the component supplies may be set too high resulting in a supply rate which is too high for the particular application.
- a further disadvantage is that the bulk densities of the components of the mix vary from one supply to the next. In order to allow for this, the component hoppers and their gates would need to be re-calibrated each load/pour, which would reduce the versatility of the volumetric mixer. Thus, despite the advantages of volumetric mixers, many users do not favour them as they have no guarantee of the quantity and quality of the concrete mix provided. Batch mixing and volumetric mixing are two very different processes. The static batch mixing plants serve a different market from that of the volumetric machines . Because of their different advantages and disadvantages, the two types of concrete mixing tend to be used in very different applications: batching for high quality concrete for use in industrial applications and volumetric machines for the domestic market (garage drives, fence posts etc.) .
- concrete making apparatus for mounting on a vehicle, for manufacturing concrete on-site, the apparatus comprising: a plurality of separate containers for storage of components of the concrete; weighing means for determining weight of at least one of the components; a mixer for mixing the components together and supplying mixed concrete; and delivery means for dispensing components from their respective containers and conveying components to the mixer; wherein the rate of delivery of components by the delivery means is dependent on the weight of the at least one component determined by the weighing means and the particular supply of mixed concrete required from the mixer.
- the proportions of the components in the concrete mix by weight can be very accurately controlled.
- a high quality, reliable mix can be provided on-site.
- the concrete making apparatus may further comprise a processor connected to the weighing means and the delivery means for controlling the rate of delivery of components.
- the processor is connected to the weighing means so that the amount by weight of each component provided for the mix may be monitored by the processor.
- the processor is also connected to the delivery means so that it can monitor the rate of delivery of components and, if necessary, adjust the rate of delivery.
- the processor is preferably a programmable processor. If the processor is programmable, the required ratio by weight of components in the mix can be entered onto the processor which, in turn, can control the rate of delivery of components to ensure that the ratio is maintained. Thus, the proportions (by weight) of components in the mix are very accurate and the resulting mix is high quality and reliable.
- the processor is programmable by an operator in accordance with the particular concrete mix required. The processor may be programmed before use or may be programmed on-site .
- the delivery means comprises at least one conduit for delivery of at least one fluid component.
- the flow rate of fluid components through the at least one conduit is adjustable.
- the apparatus further comprises at least one pump for conveying fluid component (s) along the at least one conduit.
- the flow rate of fluid components may be adjustable by adjusting the pump speed.
- the flow rate of fluid components may be adjustable by increasing or decreasing the flow via specially designed solenoids. If the concrete making apparatus includes a processor, the flow rate of the at least one fluid component through the at least one pipe is preferably adjustable by the processor.
- the processor can appropriately adjust the flow rate to adjust the delivery rate of one or more components. This may be by adjusting the pump speed of the at least one pump which convey fluid component (s) along the at least one conduit.
- the fluid components may include water and liquid admixtures .
- the concrete making apparatus further comprises flow rate sensing means for determining the rate of delivery of fluid components. If the apparatus comprises a processor, preferably, the processor is connected to the flow rate sensing means.
- the processor may be remotely operable. This may increase safety for an operator.
- the weighing means comprise load cells on which each container is mounted. In this way, the weight of each component provided for the mix may be determined when the components are stored in the containers.
- the storage containers are all mounted on one frame. In this embodiment each storage container is mounted separately on load cells, so that the weight of each component in the container may be determined.
- the weighing means comprise load cells on which the delivery means is mounted. In that way, the weight of each component provided for the mix may be determined when the components are being delivered to the mixer.
- the mixer is an elongate tubular mixer and the mixed concrete is dispatched at the downstream end of the mixer.
- the mixer may include one or more supply means along its length for successive introduction of the components into the mixer.
- the concrete making apparatus further comprises measuring means for determining the volume of at least one of the components. This means that the amount of a component used can be dependent on volume as well as on weight.
- the apparatus is arranged to be able to manufacture concrete without using the weighing means. This means the apparatus can be used in situations where using the weighing means is not possible, for example when the apparatus is positioned on an incline greater than 5%, in which case the load cells will not function correctly. In other words, in situations where it is not suitable to use the weighing system, the apparatus can manufacture concrete volumetrically instead.
- the rate of delivery is dependent on the weight of the at least one component and the particular supply of mixed concrete required so that the proportions by weight of the components in the mix may be accurately controlled and a high quality mix achieved.
- the steps of delivering, mixing and dispatching are carried out continuously to provide a continuous supply of mixed concrete.
- This is advantageous because an appropriate amount of high quality mixed concrete may be provided with minimal wastage and the mixed concrete provided is extremely fresh.
- the step of weighing is carried out continuously so that delivery rate(s) can be continuously controlled.
- the rate of delivery of components is controlled by a processor.
- the processor may be a programmable processor. In this way, the processor may appropriately control the rate of delivery of components in dependence upon the weight of the at least one component and the particular mixed concrete required.
- the plurality of separate containers preferably comprises at least one hopper for storing aggregate and/or a tank for storing water and/or a container for cement.
- the step of weighing the components may be carried out before or after the dispensing step.
- the step of weighing the components may be carried out by load cells on which the container is mounted.
- the method further comprises continuously monitoring the rate of delivery of the components .
- Figure 1 is a schematic perspective view of a prior art concrete mixing vehicle
- Figure 2 is a side elevation view of a concrete mixing vehicle according to the invention.
- FIG. 1 shows a concrete mixing vehicle according to the prior art.
- the water is stored in a water tank 103 mounted at the front of the vehicle" and is pumped hydraulically to a mixer 105 located at the rear of the vehicle.
- the aggregate 107 is stored in open-topped bins 109 located behind the water tank 103.
- a conveyor belt 111 mounted directly beneath the open bottoms of the bins 109, transports the aggregate to the mixer 105.
- the cement is stored in a watertight bin 113 positioned at the rear of the vehicle 101.
- the bin 113 is provided with vibrators 115 and internal mixing/discharge means 117 that deliver the cement to the conveyor belt 111 below.
- Independent storage systems (not shown) for supplying liquid admixtures such as, for example, accelerators, retarders and foaming agents, are also provided. It should be noted that the containers for the various components are mounted on a common frame which is then attached to the vehicle.
- an operator appropriately adjusts discharge means on the bins 109, the water tank 103, the bin 113, and any other storage means for other mix components, in accordance with the particular concrete mix required and particular supply rate required.
- the dry components fall onto the conveyor belt 111 and are transported to the rear of the vehicle, the liquid components are pumped to the rear of the vehicle, all the components are combined and mixed inside the elongate mixer 105 and mixed concrete is discharged from the delivery end 119 of the mixer 105.
- aggregate bin 205 and cement bin 207 are mounted on load cells (not shown) for monitoring the weight of aggregate/cement in the bin.
- Conveyor belt 209 forms the bed of the aggregate bin and there are separate gates (not shown) on the sand section 205a and on the stone section 205b of the aggregate bin 205.
- the settings on the gates determine the amount of sand and stone exiting the bin 205 on the conveyor belt 209.
- the settings on the gates control the ratio of sand: stone and the conveyor belt 209 speed controls the rate of supply of aggregate.
- conveyor belt 210 is linked to the bin 207 so that the overall supply rate of cement can be controlled by varying the conveyor belt 210 speed.
- the conveyor belts 210 and 209 are controlled by a processor (not shown) which is programmable according to the ratio by weight of components required in the concrete mix.
- the weight of each dry component in the mix is determined in a different way: by mounting the conveyor belts 209 and 210 on load cells. In that way, the individual component containers need not be separately mounted but the weights of the components may be monitored as they pass along the conveyor belts.
- the weights of the components are fed into the processor and the processor adjusts the speeds of conveyor belts 209 and 210 in accordance with the aggregate gate settings and in accordance with the weight ratio of aggregate: cement required.
- the flow rates of the liquid components are fed into the processor and the processor adjusts the pump speeds (or solenoids) in accordance with the weight ratio of aggregate: liquid components required. All the components are mixed in the mixer and fresh mixed concrete is dispatched from the delivery end of the mixer 211.
- the operator can simply program this into the processor and the processor will adjust the conveyor belt 209 speed and/or the conveyor belt 210 speed and/or the liquid component pump speeds accordingly. The operator does not need to take any further action.
- FIG. 3 is a block diagram showing operation of the concrete mixing vehicle.
- the load cells 301 on each component container are connected to a processor 303.
- the weight of component in each container is inputted (arrow 305) to the processor 303.
- the processor 303 is also connected to the conveyor belt 209, to the conveyor belt 210 and to the liquid flow meters/pumps 307. In that way, the rate of dispense of cement, liquid components and aggregate may be continuously monitored (arrows 309) by the processor.
- the processor 303 processes the data from the load cells 301, the conveyor belts 210 and 209 and the liquid flow meters/pumps 307 and appropriately controls (arrows 315) the speetls of the conveyor belts 210 and 209 and the pumps 307 in order to maintain the required ratio of components in the concrete mix.
- Data on the required concrete mix is programmed into the processor 303 by an operator (input 317) .
- a selection of concrete mix data may be stored in storage means 319 for access by the processor so that the operator does not need to input new data each time but can simply select from the stored concrete mix data.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/572,107 US20070257392A1 (en) | 2004-07-13 | 2005-07-13 | Apparatus and Method for Manufacturing Concrete |
EP05759626.4A EP1773551B1 (en) | 2004-07-13 | 2005-07-13 | Apparatus for manufacturing concrete |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0415685.7 | 2004-07-13 | ||
GB0415685A GB2416134A (en) | 2004-07-13 | 2004-07-13 | Apparatus and method for manufacturing concrete |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006005946A1 true WO2006005946A1 (en) | 2006-01-19 |
Family
ID=32893506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/002737 WO2006005946A1 (en) | 2004-07-13 | 2005-07-13 | Apparatus and method for manufacturing concrete |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070257392A1 (en) |
EP (1) | EP1773551B1 (en) |
GB (1) | GB2416134A (en) |
WO (1) | WO2006005946A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010007474A1 (en) * | 2008-07-18 | 2010-01-21 | Roberto Prada | Mobile concrete batch plant and mixer |
US9180605B2 (en) | 2008-01-16 | 2015-11-10 | Cemen Tech, Inc. | Volumetric concrete mixing method and apparatus |
Families Citing this family (16)
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US9738461B2 (en) | 2007-03-20 | 2017-08-22 | Pump Truck Industrial LLC | System and process for delivering building materials |
US11203879B2 (en) * | 2006-03-23 | 2021-12-21 | Pump Truck Industrial, LLC | System and process for delivering building materials |
US20070226089A1 (en) * | 2006-03-23 | 2007-09-27 | Degaray Stephen | System and method for distributing building materials in a controlled manner |
US20090177313A1 (en) * | 2007-11-29 | 2009-07-09 | Heller Stephen J | Portable cement mixing apparatus |
CA2767762C (en) | 2009-07-11 | 2018-10-23 | Stephen Degaray | System and process for delivering building materials |
AU2010100118A4 (en) | 2009-07-14 | 2010-03-04 | Amit Arun Gokhale | A Compact Concrete Producing and Transporting Equipment |
WO2012017444A1 (en) * | 2010-08-03 | 2012-02-09 | Amit Arun Gokhale | A highly compact concrete production & production transportation equipment with a novel weighing, conveying, mixing & discharging device |
US10232332B2 (en) * | 2012-11-16 | 2019-03-19 | U.S. Well Services, Inc. | Independent control of auger and hopper assembly in electric blender system |
US9993944B2 (en) | 2014-05-05 | 2018-06-12 | Omega CM Delta, LLC | Volumetric mixer with water tank and oil tank inside aggregate bin |
WO2016010497A1 (en) * | 2014-07-14 | 2016-01-21 | Por Yapi Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | Lightweight concrete production and application vehicle |
NO2744831T3 (en) * | 2015-03-30 | 2018-05-05 | ||
US10286573B2 (en) | 2015-07-21 | 2019-05-14 | Carl Cunningham | Mixing plant and related production methods |
WO2020253944A1 (en) * | 2019-06-18 | 2020-12-24 | M. Smid Beheer B.V. | Mobile concrete mixer vehicle |
EP4132759A4 (en) * | 2020-04-10 | 2024-04-24 | Construc Ind Llc | Cellular concrete wet mix blending |
CN112277162A (en) * | 2020-10-15 | 2021-01-29 | 安吉龙港混凝土制品有限公司 | Production line and process for preparing colored pervious concrete |
CN112356294A (en) * | 2020-10-15 | 2021-02-12 | 安吉龙港混凝土制品有限公司 | Light foam concrete processing system and processing technology |
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-
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- 2005-07-13 US US11/572,107 patent/US20070257392A1/en not_active Abandoned
- 2005-07-13 EP EP05759626.4A patent/EP1773551B1/en not_active Not-in-force
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9180605B2 (en) | 2008-01-16 | 2015-11-10 | Cemen Tech, Inc. | Volumetric concrete mixing method and apparatus |
WO2010007474A1 (en) * | 2008-07-18 | 2010-01-21 | Roberto Prada | Mobile concrete batch plant and mixer |
Also Published As
Publication number | Publication date |
---|---|
EP1773551A1 (en) | 2007-04-18 |
GB2416134A (en) | 2006-01-18 |
GB0415685D0 (en) | 2004-08-18 |
US20070257392A1 (en) | 2007-11-08 |
EP1773551B1 (en) | 2013-06-26 |
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