RU2014153C1 - Electrocentrifugal unit for purifying liquids - Google Patents

Abstract

FIELD: equipment for separating suspensions. SUBSTANCE: electrocentrifugal unit for purifying liquids has body 1 mounted to house rotor 4, delivery pipe 2 and discharge pipe 3. Electrolyzer 7 formed as sieve inserts is also provided in body 1 with the space between the inserts and the dimension of these cells proportionally decreasing. The bottom edges of the inserts are positioned relative to the bottom of rotor 4 at a distance equal to 1/2 or 2/3 height of the cylindrical part of the latter. EFFECT: higher quality of separating. 2 dwg

Description

 The invention relates to a technique for separating suspensions and improves the cleaning efficiency due to triboelectrification of the rotor inserts.

 Known electric centrifugal liquid cleaner containing a housing, inlet and outlet nozzles, a rotor with nozzles mounted on the lower and upper bearing assemblies, the outer and inner electric electrodes with slots connected to unlike poles of the high voltage source.

 Significant disadvantages of the known cleaner are the need for a high voltage source, low cleaning efficiency due to insufficient cleaning fineness, washing particles deposited on the rotor walls and their subsequent entrainment together with the liquid into the system, clogging of nozzle openings, channels, etc.

 The invention is aimed at improving the cleaning efficiency due to triboelectrification of special insert-grids (electrizers).

 The essence of the invention lies in the fact that the electrizator is made in the form of mesh inserts, the distance between which and the size of the cells are made proportionally reduced, and the lower edges of the inserts are located relative to the bottom of the rotor at a distance of 1/2 and 2/3 of the height of the cylindrical part of the rotor. Thus, the invention meets the criterion of "novelty."

 A significant difference from the prototype is the presence of grids of electrifiers, due to the appearance of a triboelectric field, firstly, to increase the fineness of cleaning, secondly, to retain particles deposited on the walls of the rotor and, finally, to eliminate expensive sources of high voltage.

 In FIG. 1 shows a cleaner, a longitudinal section; in FIG. 2 - node I in FIG. 1.

 The electrocentrifugal cleaner contains a housing 1, input 2 and output 3 nozzles, a rotor 4 mounted through insulators 6 on bearings 5, mesh inserts-electrizators 7 on insulators 8 and 9, and the distance between the inserts-electrizators and the size of the cells are proportionally reduced, and the lower the edges of the inserts are located relative to the bottom of the rotor 4 at a distance of 1/2 and 2/3 of the height of the cylindrical part of the rotor.

 The cleaner works as follows.

 The liquid to be cleaned enters the rotor 4 of the cleaner, under pressure it is sent to the blades 10 of the turbine installed in it, rotating the rotor. Under the action of centrifugal forces, the liquid is thrown onto the mesh inserts-electrizators 7, passing through which, the liquid, being a non-polar dielectric (for example, motor oil, fuel), contributes to the appearance of electrostatic fields in the grid space, as well as between the wall of the rotor 4 and the grid 7. Moreover the first two grids to hold large particles require a lower electric field potential than the subsequent ones. Therefore, the distance between the grids, as well as the size of the mesh cells, is reduced proportionally (for example, by 2 times for motor oils). The lower edge of the nets is located relative to the bottom of the rotor at N / 2 and 2 / 3H (Fig. 1), which is necessary to exclude the washing out of settled particles and clogging the nets in the lower part of the rotor, where the dirt capacity is much greater than in the upper part of the rotor. Thus, differentiation by particle size of the contaminants during centrifugation is carried out, as well as their retention on the grids and the rotor in the case of both decreasing the rotor speed and stopping it due to the electrical effect on the particles. The purified liquid exits through the hole 11 and the outlet pipe 3.

 The advantage of such a cleaner is a combination of filtration (through mesh cells), centrifugal and electrical methods for cleaning technical fluids in case of uneven rotation of the rotor and its frequent stops with relatively low electric power costs for maintenance of the cleaner.

Claims (1)

 ELECTRIC CENTRIFUGAL CLEANER OF LIQUID, comprising a housing, a rotor, nozzles, an inlet and outlet pipe and an electricizer, characterized in that the electricizer is made in the form of mesh inserts, the distance between which and the size of the cells are made proportionally decreasing, and the lower edges of the inserts are located relative to the bottom of the rotor at a distance comprising 1/2 and 2/3 of the height of the cylindrical part of the rotor.

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