CN112026007A - Concrete batching control system - Google Patents
Concrete batching control system Download PDFInfo
- Publication number
- CN112026007A CN112026007A CN202010942903.7A CN202010942903A CN112026007A CN 112026007 A CN112026007 A CN 112026007A CN 202010942903 A CN202010942903 A CN 202010942903A CN 112026007 A CN112026007 A CN 112026007A
- Authority
- CN
- China
- Prior art keywords
- powder
- aggregate
- bin
- weight
- scale
- 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.)
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Classifications
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- 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
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
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- 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
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
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- 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
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
-
- 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
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- 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
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
- B28C7/067—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of stationary hoppers, chambers or bins from which the material is fed gravitationally, e.g. having agitating means therein
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
A concrete batching control system comprising: an aggregate conveying system and a powder conveying system; the aggregate conveying system comprises an aggregate bin which outputs concrete aggregate to an aggregate scale through an unloading door; the powder conveying system comprises a powder bin, and the powder bin outputs concrete aggregate to a powder scale through an unloading door; the powder fall correcting part determines a fall correction value of the powder according to the powder formula, and closes the discharge door when the powder scale reaches the expected weight according to the fall correction value; and the powder correcting part also calculates the weight increase value of the powder scale in unit time, breaks the arch of the powder in the powder bin when the weight increase value is less than a threshold value, and closes the discharge door when the arch breaking is finished and the powder scale reaches the expected weight.
Description
Technical Field
The invention relates to a concrete production process, in particular to a mixed concrete batching control system.
Background
The powder used in concrete production includes cement, fly ash, limestone, mineral powder, etc. When the automatic material-filling and material-discharging device works, cement or other powder materials are filled into the bin body, the material-discharging door is opened, the powder materials flow into the spiral conveyer through the gate, and then the powder materials are continuously conveyed into the powder material weighing hopper for metering.
Because the powder has strong water absorption, the surface of the particles is hydrated after being wetted, the adhesive force is greatly increased, the fluidity is weakened, and the particles are easy to arch and even agglomerate. The problem that powder is easy to take out of the bin is often caused in production, and the powder with poor fluidity and higher water content is more difficult to take out of the bin, so that the smooth operation of the process is directly influenced.
In the batching process of the batching machine, when materials in the weighing hopper reach a set value, feeding devices such as a material door and a screw conveyor can be automatically stopped, but at the moment, part of the materials still fall into the weighing hopper from the air, and the weight of the material suspended in the air is also called overshoot. In the existing method, the overshoot correction value is set by setting the powder formula, and the drop is eliminated by closing the charging door in advance, so that the batching precision is improved.
However, for the damp powder, the discharging speed in the powder bin is slow, and different from the normal discharging amount of the powder, the conventional overshoot correction value is adopted for the consolidated powder, so that the dosing precision is reduced.
Disclosure of Invention
The invention provides a concrete batching control system which can better realize the control of powder conveying engineering in concrete production and improve batching precision.
The technical scheme of the invention for solving the problems of the prior art provides a concrete batching control system, which comprises: an aggregate conveying system and a powder conveying system; the aggregate conveying system comprises an aggregate bin which outputs concrete aggregate to an aggregate scale through an unloading door; the powder conveying system comprises a powder bin, and the powder bin outputs concrete aggregate to a powder scale through an unloading door; the powder fall correcting part determines a fall correction value of the powder according to the powder formula, and closes the discharge door when the powder scale reaches the expected weight according to the fall correction value; the method is characterized in that: and the powder correcting part also calculates the weight increase value of the powder scale in unit time, breaks the arch of the powder in the powder bin when the weight increase value is less than a threshold value, and closes the discharge door when the arch breaking is finished and the powder scale reaches the expected weight.
Further, the powder correction part determines the expected weight Ge according to the following formula, wherein Ge = G-X, G is the weight of the powder in the concrete ingredient, and X is the drop correction value.
Further, when the weight of the powder material weighed by the powder material correcting part reaches Ge1= Ge-X, judging whether the weight increase value of the powder material weighed in unit time is smaller than a threshold value, if so, performing arch breaking on the powder material in the powder material bin, and closing a discharge door when the arch breaking is finished and the weight of the powder material weighed reaches the expected weight Ge; otherwise, the discharge gate is closed when the powder is weighed to the desired weight Ge.
Further, the method also comprises the following steps: a storage unit for recording and storing the storage time and humidity of different powders; a threshold value determination unit that determines a first threshold value and a second threshold value of the storage time and the humidity integrated value for different powder lot; a calculation part for calculating the storage time and the humidity integral value of different powder materials input into the powder bin at present when the concrete is prepared; a control unit for performing the following control according to the result of the calculation unit: if the time-humidity integral value of all the powder is smaller than the first threshold value, the powder in the powder bin is not broken; if the integral of the specific powder exceeds a second threshold value, an arch breaking program is started to break the arch of the powder in the powder bin; and if the time-humidity integral values of all the powder are smaller than the second threshold value, but the time-humidity integral value of the specific powder is larger than the first threshold value, determining whether to start an arch breaking program to break the powder in the powder bin or not according to the weight increment value of the powder in unit time.
Further, the first threshold value of the different powder is determined according to an integrated value of a storage time when the powder is stored under a storage condition of an average annual humidity and a screen residue of 5% and the average annual humidity.
Further, the second threshold value of the different powder is determined according to an integrated value of a storage time of the powder under the storage condition of the annual average humidity with a screen residue of 15% and the annual average humidity.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.
The concrete batching control system comprises an aggregate conveying system and a powder conveying system; wherein the aggregate is pebble, and the powder comprises cement, fly ash, limestone, mineral powder and the like. The aggregate conveying system comprises an aggregate bin, and the aggregate bin outputs concrete aggregate to the aggregate scale through the unloading door; the powder conveying system comprises a powder bin which outputs concrete aggregate to the powder scale through the discharging door.
And the powder fall correcting part is used for setting an overshoot correction value, closing the feeding door in advance to eliminate fall, determining the fall correction value of the powder according to the powder ingredient components in the concrete components, and storing the fall correction values corresponding to different powder components through the storage part. And the powder fall correction part closes the discharge door when the powder scale reaches the expected weight according to the fall correction value, wherein the expected weight Ge is determined according to the following formula, Ge = G-X, wherein G is the weight of the powder in the concrete ingredient, and X is the fall correction value.
The powder correcting part also calculates the weight increase value of the powder scale in unit time, breaks the arch of the powder in the powder bin when the weight increase value is less than the threshold value, and closes the discharge door when the arch breaking is finished and the powder scale reaches the expected weight. Specifically, when the weight of the powder material weighed by the powder material correcting part reaches Ge1= Ge-X, judging whether the weight increase value of the powder material weighed in unit time is smaller than a threshold value, if so, performing arch breaking on the powder material in the powder material bin, and closing a discharge door when the arch breaking is finished and the powder material weighed reaches the expected weight Ge; otherwise, the discharge gate is closed when the powder is weighed to the desired weight Ge. Through the arrangement, before the overshoot correction is carried out, whether the arching exists or not is judged in advance, and the arching of the arched powder bin is broken in advance, so that the overshoot correction error caused by the solidified powder is avoided.
Further, the concrete batching control system further comprises a storage part, a threshold value determining part, a calculating part and a control part. A storage unit for recording and storing the storage time and humidity of different powders; recording the storage time and the humidity of each powder in the warehouse; the storage time is measured by day, and the humidity is the average humidity of a single day.
And a threshold value determining section that determines a first threshold value and a second threshold value of the storage time and the humidity integrated value for different powder lot. Wherein the first threshold value of the powder is determined according to an integral value of a storage time of the powder when the amount of the screen residue is 5% and an average humidity of the year under the storage condition of the average humidity of the year; the second threshold for a given fluff is determined by the integration of the time it takes to store the fluff at 15% screen residue under annual average moisture storage conditions and the annual average moisture. Wherein the integrated value is the sum of the average humidity per day over the storage time. The above-mentioned screen allowance may be a screen allowance passing through a 0.9 mm screen. And a calculation part for calculating the storage time and the humidity integral value of different powder materials currently input into the powder bin when the concrete is prepared.
A control unit for performing the following control according to the result of the calculation unit: if the time-humidity integral value of all the powder is smaller than the first threshold value, the powder in the powder bin is not broken; if the integral of the specific powder exceeds a second threshold value, an arch breaking program is started to break the arch of the powder in the powder bin; and if the time-humidity integral values of all the powder are smaller than the second threshold value, but the time-humidity integral value of the specific powder is larger than the first threshold value, determining whether to start an arch breaking program to break the powder in the powder bin or not according to the weight increment value of the powder in unit time. And if the weight increase value of the powder scale in unit time is smaller than the threshold value, starting an arch breaking program to break the arch of the powder in the powder bin.
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The particular features, structures, materials, or characteristics described in this disclosure may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. A concrete batching control system comprising: an aggregate conveying system and a powder conveying system; the aggregate conveying system comprises an aggregate bin which outputs concrete aggregate to an aggregate scale through an unloading door; the powder conveying system comprises a powder bin, and the powder bin outputs concrete aggregate to a powder scale through an unloading door; the powder fall correcting part determines a fall correction value of the powder according to the powder formula, and closes the discharge door when the powder scale reaches the expected weight according to the fall correction value; the method is characterized in that: and the powder correcting part also calculates the weight increase value of the powder scale in unit time, breaks the arch of the powder in the powder bin when the weight increase value is less than a threshold value, and closes the discharge door when the arch breaking is finished and the powder scale reaches the expected weight.
2. The concrete batching control system of claim 1, wherein: the expected weight Ge of the powder correction part is determined according to the following formula, wherein Ge = G-X, G is the weight of the powder in the concrete ingredient, and X is a drop correction value.
3. The concrete batching control system of claim 1, wherein: when the weight of the powder material weighed by the powder material correcting part reaches Ge1= Ge-X, judging whether the weight increase value of the powder material weighed in unit time is smaller than a threshold value, if so, performing arch breaking on the powder material in the powder material bin, and closing a discharge door when the arch breaking is finished and the powder material weighed reaches the expected weight Ge; otherwise, the discharge gate is closed when the powder is weighed to the desired weight Ge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010942903.7A CN112026007B (en) | 2020-09-09 | 2020-09-09 | Concrete batching control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010942903.7A CN112026007B (en) | 2020-09-09 | 2020-09-09 | Concrete batching control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112026007A true CN112026007A (en) | 2020-12-04 |
| CN112026007B CN112026007B (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010942903.7A Expired - Fee Related CN112026007B (en) | 2020-09-09 | 2020-09-09 | Concrete batching control system |
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| CN (1) | CN112026007B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU391478A1 (en) * | 1970-04-22 | 1973-07-25 | Авторы изобретени | METHOD FOR ADJUSTMENT OF DOSING OF COMPONENTS OF ASPHALT-CONCRETE MIXTURE |
| US20050219941A1 (en) * | 2004-04-05 | 2005-10-06 | Mcneilus Truck And Manufacturing, Inc. | Concrete batching facility and method |
| CN102294750A (en) * | 2011-08-20 | 2011-12-28 | 三一重工股份有限公司 | Powder arch breaking method, device and concrete mixing plant |
| CN202717222U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Arch breaking device for storage bin |
| CN105109719A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Error control method of weighing machine |
| CN105425641A (en) * | 2015-12-16 | 2016-03-23 | 湖南三一路面机械有限公司 | Preset value adjusting method for ingredients, mixing plant ingredient control method and systems |
| US20190202640A1 (en) * | 2017-12-29 | 2019-07-04 | Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C. | Structure of material feeding device |
| CN110271102A (en) * | 2019-08-01 | 2019-09-24 | 宁波亿诺维信息技术有限公司 | A kind of concrete mixing plant batching control system and control method |
-
2020
- 2020-09-09 CN CN202010942903.7A patent/CN112026007B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU391478A1 (en) * | 1970-04-22 | 1973-07-25 | Авторы изобретени | METHOD FOR ADJUSTMENT OF DOSING OF COMPONENTS OF ASPHALT-CONCRETE MIXTURE |
| US20050219941A1 (en) * | 2004-04-05 | 2005-10-06 | Mcneilus Truck And Manufacturing, Inc. | Concrete batching facility and method |
| CN102294750A (en) * | 2011-08-20 | 2011-12-28 | 三一重工股份有限公司 | Powder arch breaking method, device and concrete mixing plant |
| CN202717222U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Arch breaking device for storage bin |
| CN105109719A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Error control method of weighing machine |
| CN105425641A (en) * | 2015-12-16 | 2016-03-23 | 湖南三一路面机械有限公司 | Preset value adjusting method for ingredients, mixing plant ingredient control method and systems |
| US20190202640A1 (en) * | 2017-12-29 | 2019-07-04 | Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C. | Structure of material feeding device |
| CN110271102A (en) * | 2019-08-01 | 2019-09-24 | 宁波亿诺维信息技术有限公司 | A kind of concrete mixing plant batching control system and control method |
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| Publication number | Publication date |
|---|---|
| CN112026007B (en) | 2022-04-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220323 Address after: 528000 Luhu intersection, Zone D, Lubao Industrial Park, Sanshui District, Foshan City, Guangdong Province Applicant after: Foshan Sanshui ready made concrete Co.,Ltd. Address before: 050031 No.19 Zhaiying South Street, Yuhua District, Shijiazhuang City, Hebei Province Applicant before: Jiang Cuizhen |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |