Analysis and Solution of Cement Loss in Concrete Mixing Plant
If the third sensor is faulty, or if the sensor support point is not on the same level as the other two sensor support points, it should be lower.
2 gravity automatic loading scale is an automatic weighing scale that divides bulk materials into predetermined and constant mass loads and loads them into containers.
Water pump; 4.
Processing method: Replace the sensor or adjust the level, and calibrate it after completion.
Each mixing station has an electronic truck scale, commonly known as a weighbridge.
If there is a significant deviation among the three, one of them will generally be much smaller than the other two, such as displaying 100kg, 99kg, or 85kg.
According to regulations, when the ingredient is greater than 15kg, the maximum allowable dynamic error for this level during calibration is ± 0.7%, and the maximum allowable error during use is ± 1%.
Additive pump; 5.
The accuracy level of cement scales is generally X (1) level.
The ingredient needs to first set a drop, also known as the advance amount.
The following aspects can be checked.
Introduction: One of our clients told me that cement has lost more than ten tons in recent months.
The majority of cement losses are due to the comparison between the cumulative measurement of cement materials used in the mixing plant and the weighing amount of cement.
Let me first talk about what a gravity automatic loading scale is.
When the drop value is subtracted from the formula during the ingredient process, the screw machine must immediately stop and record the actual ingredient value after it stabilizes.
Figure 1 shows the background image of the main interface of the production program for a commercial concrete mixing plant.
Let’s help check if the scale is accurate.
Batching machine, aggregate scale; 2.
3.2 Problems with the cement scale itself.
There are three sensors in the cement scale, and five 20kg weights are placed separately on the scale body above each sensor.
Mixer
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I tried to help them analyze several possible reasons for this phenomenon and how to take corresponding treatment methods.
This is the head of a concrete mixing plant, referring to the issue with their cement batching scale.
The cement scale is indeed inaccurate, and negative deviation can cause cement losses.
I need to use the following diagram, as shown in Figure 1.
Cement, coal ash, and other powder silos are transported to the weighing hopper of the cement and coal ash scales through a screw conveyor, and stacked with scales; 3.
3.2.1 Check for bias load.
Specifically, when it comes to cement weighing, it means loading cement into the weighing hopper according to the formula value.
We complete the weekly inspection of their scales every year, and serving customers well is also our task.
1.
If the weighing scale is not accurate, the quantity of incoming materials and the quantity of materials used are no longer comparable.
Analysis and Solution of the Causes of Cement Loss 3.1 Comparison of Electronic Truck Weights.
Processing method: Confirm whether the weighbridge is accurate.
3.2.2 After calibration, add the negative deviation of the weight upwards and remove the positive deviation of the weight downwards to analyze this problem.