Application of M90Smultihead weigher in cement clinker seasoning

Author: Smartweigh–Multihead Weighter

Long-term use of DCM-1 electronic belt scale for cement clinker, because the supply of cement clinker is relatively limited, and the temperature of the cement clinker into grinding is high, which often leads to the lengthening of the transmission belt, the deviation of the direction and even burning; this scale is difficult to calibrate. , poor reliability, high equipment failure rate, and low dynamic measurement verification accuracy, resulting in a serious loss of concrete storage, with an average loss of more than 500t. In order to improve the measurement and verification accuracy of cement clinker In August, 2 sets Φ2.1m in turn×The M90S multihead weigher is installed on the 6.5m concrete grinder, and the actual effect is very good. Overview of the 2M90S type multihead weigher. Select CPU8751 as the operation key of M90Smultihead weigher.

It mainly consists of five parts: electric vibration machine, amplifier, sensor, measurement verification warehouse and main microcomputer system software, which are mainly used for continuous measurement verification of bulk solid raw materials. The key index values ​​of the scale: operation cycle time: 30~255s; 2) operation measurement verification precision: 0.5%~1%; 3) production capacity per hour: 0.1~60 tons/hour; 4) data signal transmission distance:<Three kilometers; adaptability: large pipe temperature: -10~+50℃; air humidity:<85%; SCR temperature: -15~40℃; air humidity:<85%. The M90S type multihead weigher can additionally handle the preparation of 8 different raw materials, and its production volume is determined according to the given preparation.

Three metrological verification control standards. Input the given data information into the random access memory of M90S according to the computer keyboard, and the server will carry out the actual operation according to the regulations of the data information. Three tension sensors connected in series are installed in the measurement and verification chamber, and then according to a high-precision low-drift integrated operational amplifier circuit, the data signal output by the sensor is enlarged to an AC voltage data signal of 0.67~0.67V, which is used as A /D converter input, the electronic computer samples the A/D socket core 1~8 way by way, when the given value is reached, the feeding is terminated; 0.67V AC voltage data signal, according to the calculation and operation, and then carry out A/D conversion, when the electronic computer compares the data signal with the given value, obtains the relative value, and terminates the cutting, thus completing a working cycle time, and display information out the total amount of cutting material for a cycle time.

During a certain period of time, due to the hazards of some elements, the system software will send out the alarm system, and it will continue to display the serial number of the information alarm station. At this time, the system software is in a waiting state. Before the loading and unloading amounts reach the given values, the work of the next cycle time is just started. Fourth, install and adjust.

4.1 Tension sensor. The three sensors on the metrological verification bin must be used in the same field, and tension sensors of different fields cannot be mixed. The sensor must be installed in the middle of the galvanized steel wire rope (see Figure 1).

3. After installation, do not touch the sensor with any object, causing it to be subjected to side force. 4.2 First of all, the amplifier must be adjusted only after the lifting of the sensor, the measurement verification bin and the material-opening electric vibrator is completed. 2. The switching power supply of the amplifier must be ensured at 380V±Within the scope of 10%, the switching power supply cannot be used with the frequently activated large-space household appliances.

adjust“zero”resistor, so that the output voltage of the amplifier is about 0.6V. Adjust the magnification ratio, put 4kg of code in the open-type electro-vibration machine, and observe the information displayed by the M90S server.“Analog input”The amount of data should be increased by 40~80. The small diffusion coefficient path is larger, and the large diffusion coefficient path is smaller.

Generally used in the middle of 20 counts/kg~10 counts/kg. 4.3 Electric vibrator with metrological verification chamber. A distance of 20 mm should be ensured between the feeding port of the feeding electric vibrator and the measuring and verification bin, and the feeding electric vibrator can vibrate at will; It does not affect the opening of the material during work (see Figure 2).

Selecting a high-power electric vibrator as the feeding electric vibrator can reduce the feeding time, increase the feeding time, and make the raw material flow continuously. (4) The size of the measurement and verification warehouse is determined according to the production volume of the CNC grinder. Our factory uses a 16t/h CNC grinding machine to open the material, the 800Mm cement clinker measurement and verification warehouse, and the 800Mm fly ash measurement and verification warehouse. , Use 600Mm plaster of paris to measure and check the warehouse. Five runs.

Our company has just installed M90S multihead weighers since August 1992. The two M90S multihead weighers installed in September of the same year have been calibrated by zero point and products, and the deviation of metrology verification is less than 1%, achieving the required performance. indicator regulations. The feeding electric vibrator vibrates greatly, and the flow coil is often broken, resulting in uneven opening of the material and jeopardizing its application precision. The moisture content of coal ash is large, and the blockage of film-forming materials often occurs in the measurement and verification bin.

We take effective countermeasures as follows: For the problem of flow coil rupture, choose 40mm×40mm angle iron is welded around the flow coil for structural reinforcement. 2) Strictly control the concentration value of incoming grinding water to be less than 2%. According to the above measures, the product calibrated 2 multihead weighers, and the data errors were respectively: No. 2: 0.528%, No. 2: 0.825%, No. 2: The average deviation is less than 1%.

Practical experience shows that the scale has good reliability, and most of them can take into account the provisions of the measurement and verification of cement clinker preparation. 6. Evaluation of actual effect. After installation, adjustment and application, the M90Smultihead weigher has the following functions: the multihead weigher is suitable for working in the natural environment of high temperature, high smoke and dust, and strong vibration; the level of automation technology is high, and the total flow when unloading can be automatically adjusted according to the given value.

It has excellent reliability and high dynamic precision measurement accuracy. (4) The equipment failure rate is low, and the maintenance is less. (5) Dynamic commodity correction is very simple and can be performed within a few months or a month.

Seven indicated. The M90S multihead weigher is mainly used for the metrological verification of particulate matter or small pieces of raw materials. The particle size range is generally 0.5~35 mm. It is necessary to adjust the gap between the flow coil and the electromagnetic coil frequently to make the vibration amplitude of the feeding electric vibrator larger.

When shutting down, turn off the server and terminal equipment to prevent the sudden call from being washed away.“K”value (calibration index of each scale), which affects the precision of measurement verification.

Author: Smartweigh–Multihead Weighter Manufacturers

Author: Smartweigh–Linear Weighter

Author: Smartweigh–Linear Weigher Packing Machine

Author: Smartweigh–Multihead Weighter Packing Machine

Author: Smartweigh–Tray Denester

Author: Smartweigh–Clamshell Packing Machine

Author: Smartweigh–Combination Weighter

Author: Smartweigh–Doypack Packing Machine

Author: Smartweigh–Premade Bag Packing Machine

Author: Smartweigh–Rotary Packing Machine

Author: Smartweigh–Vertical Packaging Machine

Author: Smartweigh–VFFS Packing Machine