In the field of construction engineering, materials like cement slurry and collapsible loess often cause numerous problems during the mixing process. Based on over 50 construction case experiences, this article presents three core anti - blockage solutions and an equipment selection guide.
In the material pretreatment stage, a golden ratio has been identified. The aggregate particle size should be ≤ 1/3 of the pump tube diameter, and the fine particle mixing ratio should be between 15% - 20%. This ratio helps to prevent the material from adhering to the barrel wall and reduces the likelihood of blockage at the discharge port.
The operation process involves a three - step standard procedure: "low - speed pump start - uniform mixing - reverse pump pressure relief". Additionally, the method of preparing the lubricating pipe slurry is detailed. This step - by - step process ensures smooth operation and reduces the risk of blockage.
For maintenance, the clearance between the blade and the barrel wall should be ≤ 5mm. After each day's work, high - pressure water flushing is required. These standards help to keep the equipment in good condition and prevent blockage.
When it comes to equipment selection, the differences between single - helix and double - helix structures are compared. Double - helix variable - pitch models have an advantage in material dispersion, which is crucial for high - viscosity materials.
For high - viscosity working conditions, the following parameters are recommended: the feeding speed should be ≥ 2.2m³/min, the slump should be in the range of 50 - 210mm, and the water tank volume should be no less than 350L. These parameters ensure the equipment can handle high - viscosity materials effectively.
Practical configurations such as pressure - sensing early warning and vibration anti - jamming mechanisms are recommended. These features can further enhance the performance of the equipment and reduce the risk of blockage.
By following the above anti - blockage solutions and equipment selection guide, construction companies can reduce the blockage - related downtime by up to 80%. This not only reduces equipment wear and tear but also lowers labor costs.
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