What is the size of the filter orifice? Thank you very much?
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The filter in the diagram – the filter mesh inside it was made by us, and we’re not sure whether our version doesn’t meet the standards, which is why it gets clogged frequently. Can the orifice be made larger? A standard request for help? Earlier, the people in our workshop built sodium hypochlorite filters on our own, but they have been clogging up frequently lately. I checked it; from the analysis of the image, it seems to be crystalline. This problem has been around for a long time; it occurs when temperatures are low in winter, and the same situation persists in summer as well. I am now analyzing the issue with the pores of the filter screen. May I ask if the pores of the filter screen can be made larger?
It depends on the purpose of adding the filter – what it is intended to filter and what its size is. The pump inlet filter is generally 40 mesh to protect the pump.
Without affecting the pump, the mesh size of the filter can be 40 mesh or less than 40 mesh.
In the standard HG/T 21637, the filters all have a mesh size of 30, enabling them to capture solid particles with a particle size of 614 microns or larger； In a situation like yours, the fluid in the pipeline is a solid-liquid two-phase flow; it depends mainly on the size of the solid particles. You can reduce the mesh size appropriately or eliminate the filter screen.
Hierarchical filtration can effectively reduce clogging, with coarse filtration followed by fine filtration
Could trying to install electric heating in the inlet pipeline be feasible? Crystallization is the main cause of the problem, and something needs to be done about it; the issue with the filter screens can then be alleviated.
It seems that the issue of crystallization should be considered first, rather than just the mesh size
Regarding crystallization issues, it is first necessary to determine whether solid particles are allowed to be present in the pipeline under normal conditions; if not, then heat tracing must be implemented； If it is permitted, then determine what the allowable solid content ratio and particle size are, and then decide on the mesh size of the filter screen ； Some materials have high melting points; the filter before the pump is removed after the water circulation process, and filters are not allowed to be used during normal operation
There should be a solution tank for dissolving sodium hypochlorite; after it is dissolved, a pump is used to deliver the solution, otherwise even filters with a low number of mesh points will get clogged.
Without affecting the pump, the mesh size of the filter can be less than 40 mesh.
First, determine the root cause of the blockage before taking any action