The function of vortex-shielding baffles
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The last edit to this post was made by Meili on 2023-10-23 at 16:29. I would like to ask about the second point: when there are particles or suspended solids in the liquid medium, what is the function of the anti-vortex baffle? Is it to prevent foreign objects from blocking the production system downstream, and what is its working principle?
The function of vortex suppressor baffles when there are particles or suspended solids in the liquid medium is primarily to prevent these particles or suspended solids from reaching critical parts of the equipment, which could otherwise cause wear or damage to the equipment, or to hinder the normal flow of the liquid fluid. The working principle of the vortex suppressor baffles is based on fluid dynamics principles. When a fluid (such as a liquid or gas) flows past a baffle, the baffle guides the fluid to flow in a more regular and stable manner, preventing the formation of vortices. Vortices are not desired here, as they cause changes in flow velocity and affect the efficiency and accuracy of devices such as valves and sensors. Furthermore, for liquid media containing particulates or suspended solids, anti-vortex baffles can alter the flow velocity and direction of the fluid, causing the particulates or suspended solids to settle and thereby reducing their impact on subsequent equipment. In general, the functions of vortex shields can be summarized as: protecting equipment, ensuring the stability of fluid flow, and reducing or preventing the impact of particles or suspended solids on the equipment. .
Anti-vortex baffles should be installed in the following situations: 1. When connected directly to the pump inlet (to prevent the pump from running dry); 2. To prevent swirls from carrying impurities at the bottom of the container out, which could affect product quality or cause blockages at the liquid outlet of the subsequent production system; 3. At the outlet at the bottom of the container where sedimentation separation or liquid phase stratification is required (to stabilize the liquid level and improve the efficiency of separation or stratification)
This question is answered in 10.2.1 of HG/T20583-2020, or on page P492 of HG/T20583-2020