SU593715A1 - Liquid-cleaning electric filter - Google Patents

Description

This invention relates to a process for the purification of liquids and may find application in the chemical, metallurgical, mining, and other industries.

A filter for cleaning liquids is known, comprising a housing with a lid, nozzles for introducing a clear, aema and withdrawal of cleaned liquids and filtering 3vT: eMeHT, made in the form of twisted cylindrical springs inserted one into another, fixed on the lid and connected to a regeneration device one.

Known filter does not provide high cleaning efficiency. liquids and high performance due to the fact that it has a low dirt holding capacity and practically does not retain very small (colloidal) particles of contaminations ranging in size from a few microns to fractions of a micron.

In order to increase the efficiency of cleaning the fluid and the ability to filter by increasing its capacity, the electrostatic precipitator is equipped with additional springs wound on coils of cylindrical main springs and electrically isolated from them, and a dielectric perforated cylinder mounted on the lid between the additional springs.

FIG. depicts the proposed.; electrostatic precipitator, vertical section; in fig. 2 - the same cross section.

The electrostatic precipitator contains {it is case 1 with a cover 2, nozzles 3 and 4 of the input of the cleaned and output of the purified liquids, respectively, the filtering element 5, made in the form of twisted cylindrical main springs 6 and 7, inserted one into the other, on which coils additional springs are wound 8 and 9, respectively, electrically (isolated from the main using dielectric inserts 10 and 11. And the main 6 iij 7 and additional 8 and 9 springs are connected to the opposite poles of the current source (not shown in the drawings). Additional springs 8 and 9 are separated by an electric perforated cylinder 12 fitted with a flange. 13. The nozzle 4 is perforated and provided with a bottom 14 and a tension nut 15. A sealing gasket 16 is installed between the flange 13 and the bottom 14 and a device for regeneration, for example, as an electrovibrator 18. A shock absorber 19, made, for example, of rubber, is inserted between the cover 2 and the housing 1.

Claims (1)

The electrostatic precipitator works as follows. The liquid to be processed is fed into the housing 1 through the pipe 3 and successively passes a cascade of mechanical and electrical screens located in the path of the liquid to the perforated pipe 4 (the mechanical screens serve as gaps between the coils of the additional springs 8 and 9, and the electric screens are non-uniform electric the floor inside the additional springs 8 and 9 and in the perforation of the dielectric cylinder 12). In this case, large particles are mechanically retained in the gaps between the turns of the additional springs 8 and 9, while small particles under the action of electric field forces separate from the liquid, concentrate and coagulate in the electrode areas, and then either sedime to the bottom of the filter, or deposited on the electrodes. The fluid, free from mechanical impurities, is discharged through pipe 4 to the consumer. In order to ensure uniform fouling of the filter over the depth of the filter layer and to increase the filter cycle, the polarity of the electrodes is periodically changed. The need for regeneration of an electrostatic precipitator is judged by the change in its throughput, or by the quality of the finished product. If these characteristics deviate beyond the permissible limits, the supply of the initial liquid is stopped. The voltage from the electrodes is removed and the filter is regenerated. An electrovibrator 18 is turned on, and a regenerating medium (clarified liquid, steam, air, etc.) is supplied through the pipe 4. Under the action of vibration, the aggregates of particles are separated from the filter element 5 and sedimented into the lower part of the housing 1, and then carried away by the flow of the regenerating medium through the nozzle 3. Claim of the invention Electrofilter for cleaning liquids, comprising a housing with a lid, nozzles of the cleaned and output of purified liquids filtering element, made in the form of twisted cylindrical springs, inserted one into another, mounted on the lid and associated with a device for regeneration, characterized in that, in order to increase the efficiency liquid cleaning and STI proizvbditelnosti filter by increasing its c zeemkosti, electrostatic precipitator is equipped with additional springs, coils wound on cylindrical main springs and is electrically isolated from them, and the dielectric perforated cylinder fixed to the cover between the additional springs. Sources of information taken into account in the examination1. US Patent No. 3785498, cl. 210-351, 1/15/74. 18 - + sixteen / V ten FIG. g