WO2022167839A1 - Continuous production concrete plant with weigh feeder - Google Patents
Continuous production concrete plant with weigh feeder Download PDFInfo
- Publication number
- WO2022167839A1 WO2022167839A1 PCT/IB2021/050902 IB2021050902W WO2022167839A1 WO 2022167839 A1 WO2022167839 A1 WO 2022167839A1 IB 2021050902 W IB2021050902 W IB 2021050902W WO 2022167839 A1 WO2022167839 A1 WO 2022167839A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concrete
- materials
- continuous
- weigh feeder
- weighing
- Prior art date
Links
- 238000010924 continuous production Methods 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims description 43
- 238000003860 storage Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000012615 aggregate Substances 0.000 description 16
- 239000004568 cement Substances 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000654 additive Substances 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
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
- B28C7/0436—Weighing means specially adapted for use in batching plants
-
- 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
- B28C5/14—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 the stirrers having motion about a horizontal or substantially horizontal axis
- B28C5/146—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 the stirrers having motion about a horizontal or substantially horizontal axis with several stirrers with parallel shafts in one container
-
- 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
- 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
Definitions
- the invention is described a method for and devices of continuous accurate weighing feeder and continuous production of large volume concrete. With this method, the volume of concrete produced per unit time can be adjusted and controlled by a control system and has the ability to produce large volume of concrete
- the present invention is related to a weighing feeder for non-homogenous aggregates and continuous concrete production plant.
- aggregates and cement are discharged from the storage area into the first weighing hopper. After the materials reached the specified weight, they are discharged to the second weighing hopper which is connected to the previous hopper. When the material is discharging to the second weighing hopper, the first hopper is poured into the mixer through a sloping channel. Similarly, other materials according to the concrete mixing plan including sand, aggregates and cement are directed into the mixer. Water and other additives are also added to the mixture by electrical pumps and volume meter. All the above materials are mixed inside the twin-shaft mixer and finally discharged to truck-mixer continuously.
- FIG. 1 is a perspective view illustrating an embodiment of a continuous concrete plant with weigh feeder.
- FIG. 1 illustrates the top view of continuous concrete plant with weigh feeder shown in .
- FIG. 1 illustrates section A-A of continuous concrete plant with weigh feeder has been specified in .
- section B-B of continuous concrete plant with weigh feeder has been specified in .
- FIG. 1 is a perspective view illustrating an embodiment of twin-shaft mixer and the angle of blades rotation.
- This invention relates to a continuously large-volume concrete plant using a new weigh feeder.
- this method by removing many systems of conveyor belts and cement screws, the cost of manufacturing the device is much lower.
- a large volume of materials can be measured continuously causing the increase in the production speed and volume.
- all operations can be controlled and adjusted by the control system and feedback to the weighing system according to the user's needs.
- the sand is continuously and non-stop discharged from the sloped storage area (1a) into the first weighing hopper (6a) through the control gate (2a) and rotating sloping channel (4a) which is routed by the pneumatic jack (5a).
- the first weighing hopper (6a) and the second weighing chopper (7a) are connected together and both connected to the frame of the weighing part (13) through 4 load cells (12a).
- the weight of the sand in the hopper (6a) reaches the value specified in the concrete mixing plan; the sand discharge path by the rotating sloping channel (4a) directed to the second weighing hopper (7a).
- Rotating sloping channel (4a) is operated by the pneumatic jack (5a) which is commanded by the control system.
- the container (7a) is filling; the sand inside the first weighing container is discharged into the sloping aggregates channel (14) through the gate (8a) which is acted by the pneumatic jack (9a).
- control gates (2a, 2b 2c, 2d, 2e) will be adjusted by stepper motors (3a, 3b, 3c, 3d, 3e). In this way, aggregates and cement are continuously discharged from storage area and then weighed and mixed non-stop.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
This invention relates to a continuous concrete production plant using a different method of accurate continuous weigh feeder. In this method, large volumes of non-homogenous materials can be accurately weighed continuously. Then weighed materials transported to the twin-shaft continuous mixer without using a conveyor belt. Continuous production of concrete with this method increases the production volume per unit time compared to the batching plant method, which is suitable for projects with large volume of concrete.
Description
The invention is described a method for and devices of continuous accurate weighing feeder and continuous production of large volume concrete. With this method, the volume of concrete produced per unit time can be adjusted and controlled by a control system and has the ability to produce large volume of concrete
The present invention is related to a weighing feeder for non-homogenous aggregates and continuous concrete production plant.
What is now widely used for continuous weighing aggregates in industry is the use of a Belt Scale device that has some errors due to the belt vibration by minor changes in the tensile force of the motor, variable discharge of materials on the belt conveyor and etc. These errors will be considerable when the density of the material is not constant due to the moisture of the aggregates and the change in the porosity of grain. These errors cause to inaccurately measure the weight of concrete aggregates. Furthermore, they could reduce the compressive strength and increase the amount of cement to compensate the strength. Consequently production costs will be increased. In the present invention, measuring the weight of large volume of materials with high accuracy and can be achieved with a new method.
Conventional concrete production batching machines usually consist of hoppers that must be continuously fed by a wheel-loader and then aggregates enter the weighing section. Each batch of Weighed aggregates transported to a hopper by a conveyor belt, lifted up and finally discharged into the mixer. Cement, water and other additives are also added to the mixer. In this step, the materials are mixed in a specific time and discharged into the truck-mixer for transportation. Although, in this way it is possible to produce large volume of concrete, but it increases the power of conveyor belt motors, dimensions of devices that consequently lead to increase in the cost of batching plant. In the present invention concrete are produced continuously using continuous weigh feeder as mentioned above and a twin-shaft continuous mixer. In this method, the conveyor belt is not considered, which increases the speed of concrete production and reduces the manufacturing costs of the device.
In the present invention, aggregates and cement are discharged from the storage area into the first weighing hopper. After the materials reached the specified weight, they are discharged to the second weighing hopper which is connected to the previous hopper. When the material is discharging to the second weighing hopper, the first hopper is poured into the mixer through a sloping channel. Similarly, other materials according to the concrete mixing plan including sand, aggregates and cement are directed into the mixer. Water and other additives are also added to the mixture by electrical pumps and volume meter. All the above materials are mixed inside the twin-shaft mixer and finally discharged to truck-mixer continuously.
This invention relates to a continuously large-volume concrete plant using a new weigh feeder. In this method, by removing many systems of conveyor belts and cement screws, the cost of manufacturing the device is much lower. Moreover, using the aforementioned new weigh feeder, a large volume of materials can be measured continuously causing the increase in the production speed and volume. In addition, all operations can be controlled and adjusted by the control system and feedback to the weighing system according to the user's needs. In this method, the sand is continuously and non-stop discharged from the sloped storage area (1a) into the first weighing hopper (6a) through the control gate (2a) and rotating sloping channel (4a) which is routed by the pneumatic jack (5a). The first weighing hopper (6a) and the second weighing chopper (7a) are connected together and both connected to the frame of the weighing part (13) through 4 load cells (12a). When the weight of the sand in the hopper (6a) reaches the value specified in the concrete mixing plan; the sand discharge path by the rotating sloping channel (4a) directed to the second weighing hopper (7a). Rotating sloping channel (4a) is operated by the pneumatic jack (5a) which is commanded by the control system. When the container (7a) is filling; the sand inside the first weighing container is discharged into the sloping aggregates channel (14) through the gate (8a) which is acted by the pneumatic jack (9a). Then sand is poured into the twin-shaft mixer (19) through the mixer inlet opening (20). Similarly, when the second weighing hopper (7a) reaches the specified value of the concrete mixing plan, the sand discharge path is directed from the second weighing hopper (7a) to the first weighing hopper (6a) by the rotating sloping channel (4a) and second weighing hopper (7a) is discharged into the sloping aggregates channel (14) through the drain valve (10a) that is acted by the pneumatic jack (11a). Similarly, other concrete materials include:
Coarse aggregates through sloped storage area (1b), control gate (2b), rotating sloping channel (4b), pneumatic jack (5b), first weighing hopper (6b), first weighing hopper discharge gate (8b), first weighing hopper discharge pneumatic jack (9b), second weighing hopper (7b), second weighing hopper discharge gate (10b), second weighing hopper discharge pneumatic jack (11b), sloping aggregates channel (14)
Fine aggregates through sloped storage area (1c), control gate (2c), rotating sloping channel (4c), pneumatic jack (5c), first weighing container hopper (6c), first weighing hopper discharge gate (8c), first weighing hopper discharge pneumatic jack (9c), second weighing hopper (7c), second weighing hopper discharge gate (10c), second weighing hopper discharge pneumatic jack (11c), sloping aggregates channel (14)
Second sand storage through sloped storage area (1d), control gate (2d), rotating sloping channel (4d), pneumatic jack (5d), first weighing container hopper (6d), first weighing hopper discharge gate (8d), first weighing hopper discharge pneumatic jack 9d), second weighing hopper (7d), second weighing hopper discharge gate (10d), second weighing hopper discharge pneumatic jack (11d), sloping aggregates channel (14)
Cement through silo (1e), control gate (2e), rotating sloping pipe (4e), pneumatic jack (5e), first weighing container hopper (6e), first weighing hopper discharge gate (8e), first weighing hopper discharge pneumatic jack (9e), second weighing hopper (7e), second weighing hopper discharge gate (10e), the pneumatic jack for emptying the second weighing container (11e), the sloping cement pipe (14)
They are poured into the twin-shaft mixer (19) through the mixer inlet opening (20). Water is also added to the other materials by the water tank (16) using a water pump and a digital water meter (17) through a water pipe (18). Each axis of the mixer (22) rotates in opposite directions for immersing the materials to form a homogeneous mixture. Due to the angle of the mixer blades (23), the concrete mixture is forwarded to the mixer outlet gate (21) and it is discharged into the Truck Mixer to be transported to the concreting area. The control of all gates is controlled and adjusted by the control system based on the weight of the concrete mixing plan. Measurements of materials weight per unit time are calculated by the control system. So if the materials are not discharged into the mixer simultaneously (depending on the weight of each concrete component), control gates (2a, 2b 2c, 2d, 2e) will be adjusted by stepper motors (3a, 3b, 3c, 3d, 3e). In this way, aggregates and cement are continuously discharged from storage area and then weighed and mixed non-stop.
Claims (5)
- A sloping material storage for storing large volumes of material and rapid discharging of aggregates by an adjustable discharge gate using a stepper motor.
- Device for and method of continuously accurate weigh feeder for weighing materials especially large volume off non-homogenous concrete aggregate that the rate of feeding materials can be adjusted by the control system.
- A sloping channel without the use of motors and electrical power for moving materials.
- A continuous twin-shaft mixer with high power that mix and direct the materials to the outlet gate continuously.
- Device for and method of continuous concrete production concrete plant using accurate weigh feeder as claimed in claim 2 and a sloping channel without using belt conveyor for moving materials as claimed in claim 3 and a continuous twin-shaft mixer as claimed in claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2021/050902 WO2022167839A1 (en) | 2021-02-04 | 2021-02-04 | Continuous production concrete plant with weigh feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2021/050902 WO2022167839A1 (en) | 2021-02-04 | 2021-02-04 | Continuous production concrete plant with weigh feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022167839A1 true WO2022167839A1 (en) | 2022-08-11 |
Family
ID=82742034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2021/050902 WO2022167839A1 (en) | 2021-02-04 | 2021-02-04 | Continuous production concrete plant with weigh feeder |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2022167839A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9731255B2 (en) * | 2013-05-31 | 2017-08-15 | Melvin L. Black | Feedback controlled concrete production |
-
2021
- 2021-02-04 WO PCT/IB2021/050902 patent/WO2022167839A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9731255B2 (en) * | 2013-05-31 | 2017-08-15 | Melvin L. Black | Feedback controlled concrete production |
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