CN87203263U - Auto-controller for controlling concrete mixing density - Google Patents
Auto-controller for controlling concrete mixing density Download PDFInfo
- Publication number
- CN87203263U CN87203263U CN 87203263 CN87203263U CN87203263U CN 87203263 U CN87203263 U CN 87203263U CN 87203263 CN87203263 CN 87203263 CN 87203263 U CN87203263 U CN 87203263U CN 87203263 U CN87203263 U CN 87203263U
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- China
- Prior art keywords
- concrete
- digital
- comparator
- automaton
- consistence
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- 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
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The utility model relates to a control device for stirring the consistency of concrete for stirrers, which is composed of an AD switching circuit, a digital comparator, a decimal digit frequency dividing automatic charging system and a greater comparative discrimination circuit. Through the AD switching, the stirring electric current is changed to the digital variation, is input into the digital comparator, and does the digital comparison with the input 8421 code. The consistency of stirring material is controlled by the greater comparative discrimination circuit, and the whole charging process is automatically finished by a digital frequency divider. When the utility model is used, the consistency of the concrete can be controlled in the range of (+/-) 0.5 centimeters, the cement content can be decreased by about 20%, and the present manufacturer which can produce the concrete of 200 cubic meters daily can economize capital about 400, 000 yuan every year.
Description
The utility model is used for various pressure type mixer mix process automatic watering apparatus.
The method of external at present control concrete consistence mainly is to survey the sand method, promptly to measure the moisture content of sandstone, to demarcate the water consumption of every cubic meter of concrete then by the quantity of water content of sandstone, by meausring apparatus water to be dropped in the mixer at last.But this kind control method complex process, involve great expense, in case the water Weighing system breaks down, then can't correct the deviation of mixture, from domestic situation, be considered at present state-of-the-art be exactly the patent No. be 86200051 ZZ-I type slump auto-controller, think through colleague's expert appraisal: this patented technology has successfully solved this great technology problem of concrete consistence and amount of water On-line Control at home first, and the performance of this instrument has reached the world level of concrete mix slump automatic control technology.But along with the develop rapidly of electronics industry, former patent adopts gets stream part, opto-electronic conversion and is eliminated by advanced person's Digital Control by the components and parts such as logic control that separation member is formed.For making the bigger economic benefit of former patented technology performance, former inventor has designed the utility model, all adopts digital automatic control system, has eliminated the whole original papers of original instrument, makes precision, stability and the advance of instrument that a new breakthrough arranged again.
Task of the present utility model just provides a kind of employing AD digital conversion circuit, the variation of concrete mixer stir current is become numeral change, and goes to compare with the numeral of predetermined input, thereby reaches the device of controlling concrete consistence.
The utility model is achieved in that this device forms by AD digital conversion circuit, digital comparator, ten's digit frequency division automatic feeding system and greater than discriminator circuit relatively.By the AD digital conversion circuit electric current in the whole whipping process being become numeral changes (being the BCD8421 sign indicating number) and adopts the string decoding circuit to send into digital comparator, carry out numeral relatively with the BCD8421 sign indicating number of input in advance, as long as the numeral of AD conversion is greater than set-point, greater than comparing discriminator circuit, just this signal can be inputed to executing agency, drive the consumption of solenoid control water, until A/D convertor circuit equate with the BCD8421 yardage word of input or less than till, then magnetic valve stops water supply.
The utility model has following accompanying drawing:
Fig. 1 is a concrete consistence auto-controller block diagram.
Fig. 2 is the digital comparator circuit diagram.
Fig. 3 is that digital frequency division is greater than comparing discriminator circuit figure.
Fig. 4 is AD digital translation, 4 1/2 digital watch circuit diagrams.
Fig. 5 is panel-switch control circuit figure.
Below in conjunction with accompanying drawing the utility model is further described:
With reference to the accompanying drawings, its operation principle is seen accompanying drawing 1: by the AD digital conversion circuit variation of concrete mixer torque current is become numeral and change, give display on the one hand and show, on the other hand its video data is become 8421 yards with the method for synchronization and send into digital comparator as numeral.Digital comparator mainly is made up of three parts, sees that accompanying drawing 2:1 is the 8421BCD manual importation of encoding, and this yard imported one the tunnel and removed three bit digital displays, and 4-digit number comparator (4063 or 4585) is removed on another road.2 latch adopt 4510, and its task is that 4 1/2 8421 yards of showing input are sent into 4585(4-digit number comparator).3 4-digit number comparators can identify between the two greater than, be equal to or less than signal, signal is relatively sent into greater than comparator discriminator circuit and secondary batching automatic control system and is seen accompanying drawing 3: its " greater than " comparator is made up of monostable flipflop, second signal generator and a buffer 40107, buffer adopts two and the door input, when " 1 " high potential appears in digital comparator, open-minded with door, and by " J
4" relay directly drives magnetic valve and add water, its digital frequency division feeding system is by monostable flipflop, second signal generator, decade frequency divider 14017 and buffer 40107 and J
1, J
2, J
3, J
4Relay is formed, and its main task is to control the program that feeds intake of sandstone, cement, water automatically in the digital frequency division mode.Sort circuit is simpler, stable than the method that adopts the time relay to go to control respectively the program of feeding intake, and reliability improves greatly.Owing to adopt this digital divider circuit, in the whole operation process, make its whole instrument enter full-automatic control, to save cement, improved concrete quality and intensity, the denseness variability reduces greatly, and technical economic benefit is remarkable.
Advantage of the present utility model has realized the automation control of whole MIXING SYSTEM CONTROLLED BY, adopt numeral to show, accuracy, the stability of instrument have been strengthened, not only concrete consistence can be controlled at ± 0.5 centimetre but also cement consumption can reduce about 20%, the producer that produces 200 cubic metres daily can save about 400,000 yuan every year.
Claims (5)
1, a kind of automaton that is applicable to various pressure type mixer mix concrete consistences is characterized in that: this device is formed by AD digital conversion circuit, digital comparator, ten's digit frequency division automatic feeding system and greater than discriminator circuit relatively.
2, concrete consistence automaton according to claim 1, it is characterized in that: said AD digital conversion circuit is the variation with the mixer torque current, by after the rectification zeroing, send into the AD digital conversion circuit and become the BCD8421 sign indicating number and send into digital comparator.
3, concrete consistence automaton according to claim 1 is characterized in that: said digital comparator is to adopt BCD binary-coded digit comparator.
4, concrete consistence automaton according to claim 1, it is characterized in that: said can analyze concrete mix denseness and control water consumption automatically adopted monostable flipflop, second signal generator and two and a door buffer greater than discriminator circuit relatively
5, according to the described concrete consistence automaton of claim 1～4, it is characterized in that: the ten's digit frequency division automatic feeding system of the program that feeds intake of control sand, cement, stone, water is by monostable flipflop, second signal generator, decade frequency divider, buffer and J
1, J
2, J
3, J
4Relay is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203263 CN87203263U (en) | 1987-05-13 | 1987-05-13 | Auto-controller for controlling concrete mixing density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203263 CN87203263U (en) | 1987-05-13 | 1987-05-13 | Auto-controller for controlling concrete mixing density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87203263U true CN87203263U (en) | 1988-05-04 |
Family
ID=4819291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87203263 Expired - Lifetime CN87203263U (en) | 1987-05-13 | 1987-05-13 | Auto-controller for controlling concrete mixing density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87203263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615709A (en) * | 2012-03-30 | 2012-08-01 | 三一重工股份有限公司 | Concrete slump monitoring device and method |
| CN102856883A (en) * | 2012-08-17 | 2013-01-02 | 三一重工股份有限公司 | Mixing machine and protective device and protection method of same |
-
1987
- 1987-05-13 CN CN 87203263 patent/CN87203263U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615709A (en) * | 2012-03-30 | 2012-08-01 | 三一重工股份有限公司 | Concrete slump monitoring device and method |
| CN102615709B (en) * | 2012-03-30 | 2014-09-10 | 三一重工股份有限公司 | Concrete slump monitoring device and method |
| CN102856883A (en) * | 2012-08-17 | 2013-01-02 | 三一重工股份有限公司 | Mixing machine and protective device and protection method of same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |