Main parts and operation of vane filter

The main components of the vane filter include the shell, the filter blade and other parts The shell is a closed container, which can be divided into groove type and cylinder type according to its shape It is usually made of steel plate or stainless steel plate with a thickness of 4-8mm The shell shall bear the pressure of 0.2-0.5mpa (2-5 standard atmospheric pressure) when working, so it shall be manufactured in strict accordance with the process, and pressure test shall be carried out When the blade filter works, all cover plates shall be sealed When the filtrate outlet is closed and the filtrate is pressed in from the filtrate inlet by the pump, the air will be discharged from the air outlet The filtrate will quickly fill the shell and pass through the filtrate under the effect of the pump pressure, which will be collected and discharged by the main pipe In order to make the filter residue more loose and easy to fall off, a small amount of diatomite or other loose filter media can be added as filter aid During filtration, the particles of the filter aid and the solid particles in the filtration slurry are trapped on the filter cloth, forming a uniform and dense filter residue The distribution density shall not be less than 0.5kg/m3, It makes the filter residue more loose and easy to fall off When the leaf filter is working, the filtrate passes through the filter aid, filter residue and filter cloth and enters the inner cavity of the filter leaf and is discharged from the outlet The initial filtrate is turbid, which can be sent back to the filtrate for re filtration Until the filter layer is formed to make the filtrate clear When the filter residue accumulates to a certain thickness, the filtration speed will be greatly reduced At this time, the filtration shall be stopped, and the filter slurry shall be sucked out with a vacuum pump, and then the clear water shall be pressed in the reverse direction or the air in the pressure tank shall be input to blow the filter cloth, so as to loosen and fall off the filter residue Open the cover again, take out the filtrate, remove the filter residue, clean the filtrate and recombine it, and then start the next working cycle.