Single-sided hollow stainless steel welded filter plate

Abstract

A single-sided hollow stainless steel welded filter plate, the support layer is fixed between the stainless steel forming base plate and the stainless steel wire mesh; the outer edges of the stainless steel forming base plate and the stainless steel wire mesh are welded and fixed; the support ring is provided with diversion grooves at intervals, and is installed on the stainless steel forming base plate and the stainless steel wire mesh The stainless steel wire mesh is located in the inner ring of the support layer, and a through liquid outlet hole is provided in the middle of the stainless steel forming bottom plate, the stainless steel wire mesh and the support ring. The advantages of the present invention are: the stainless steel forming bottom plate is integrally welded with the outer edge of the stainless steel wire mesh to form a single-sided filter unit, and the edge is welded firmly during reverse flushing, and the outer edge of the filter plate will not be torn, ensuring the quality of the filtered liquid. The stainless steel wire mesh is not easy to stick to impurities, not easy to clog, and easy to wash. The gap of the stainless steel wire mesh on the upper surface is uniform, and the stainless steel formed bottom plate ensures that the liquid does not leak. It has the characteristics of high strength and high strength.

Description

technical field [0001] The invention belongs to a liquid filter element, in particular to a single-sided hollow stainless steel welded filter plate which is suitable for filtering high-viscosity and high-temperature liquids and has extremely strong pressure resistance and anti-backwashing capabilities. Background technique [0002] There are many kinds of stainless steel single-sided filter plates widely used in the market now, and their structures are all spot-welded with the outer edge of stainless steel wire mesh and the stainless steel bottom plate, sealed with sealing strips or welded by lead welding. The disadvantages of the single-sided filter plates with the above structure are: When the filter plate needs to be backwashed, the outer edge of the filter plate is torn and damaged due to insufficient edge welding strength or masking strength, making it impossible to filter, causing quality problems in the filtered liquid, requiring frequent replacement, resulting in a la...

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of stainless steel single-sided filter plates widely used in the market now, and their structures are all spot-welded with the outer edge of stainless steel wire mesh and the stainless steel bottom plate, sealed with sealing strips or welded by lead welding. The disadvantages of the single-sided filter plates with the above structure are: When the filter plate needs to be backwashed, the outer edge of the filter plate is torn and damaged due to insufficient edge welding strength or masking strength, making it impossible to filter, causing quality problems in the filtered liquid, requiring frequent replacement, resulting in a large amount of stainless steel material waste

The filter plate of this structure overcomes the open welding problem of the stainless steel filter plate, but after many years of use, there are the following problems: 1. It is not resistant to high temperature, and it is not suitable for filtering high-temperature liquids; 2. When backwashing, water from the liquid collection chamber Pressure is applied to the direction of the upper and lower filter plates from the inside, and the support column is broken due to its low material strength; 3. When the operating pressure between the liquid collection chamber and the lower filter plate is too high, the liquid collection chamber is easily deformed under pressure, resulting in the failure of the liquid collection chamber. Blockage, deformation of the filter layer, change of filter holes, easy to block; 4. The relative pore size of the lower filter plate is relatively small, not non-porous, and the pore size does not change much when pre-coated with diatomaceous earth. The pore size of the filter plate changes during filtration, and the filtration accuracy is unstable

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