SU1000052A1 - Liquil cleaning apparatus - Google Patents

Description

(54) DEVICE FOR FLUID CLEANING

one

The invention relates to the purification of liquids from mechanical impurities and petroleum products.

A device for cleaning liquids is known, comprising a housing and a threaded coil 1.

When using this device, a high degree of purification of liquids from petroleum products or mechanical impurities is not achieved.

Closest to the proposed technical essence and the achieved result is a device for cleaning liquids, containing a housing, a spiral channel formed by tape wound on a perforated pipe, a nozzle for introducing the liquid to be cleaned, and nozzles for tapping oil products and purified water 2.

However, in this device it is impossible to provide a sufficient depth of separation, which is possible only under the influence of a significant centrifugal field, which, in turn, implies greater speeds of movement of the emulsion itself. On the other hand, an increase in the emulsion rate in this case leads to

an increase in the Reypolds number, which excludes the possibility of obtaining the desired effect in the separation of fine emulsions.

The device does not resolve the issue of cleaning

5 oily water from mechanical impurities, which usually have a significant impact on the operation of filters. Significant difficulty is cleaning the inside of the device from

10 precipitated products present in the liquid to be purified.

This arrangement eliminates the possibility of creating a compact device with a high degree of purification, which eliminates

15 their use in transport installations. The foregoing is explained by the fact that in order to ensure the minimum required residence time of the emulsion in the volume of the device 20, this device must either reduce the speed of the emulsion, which in turn reduces the separation factor, or reduce the flow area of the channels, which increases the flow turbulence.

The purpose of the invention is to increase the productivity of the depth of separation of a water-in-oil emulsion with a high content of mechanical impurities.

This goal is achieved in that the device comprising a casing, a spiral channel formed by a tape wound on a perforated pipe, a nozzle for introducing the liquid to be cleaned and nozzles for discharging oil products and purified water are provided with a shaft mounted parallel to the perforated pipe for rotation, scrapers and a bunker for collecting mechanical impurities, with the end of the tape placed between the scrapers and attached to the shaft.

FIG. 1 shows the device section; in fig. 2 - the same, top view.

The device comprises a housing 1, a tape 2 of polymeric coalescing material, wound on a perforated pipe 3, a shaft 4 mounted in the housing 1, to which the free end of the tape 2 is attached, scrappers 5 and guide rollers 6. collecting separated mechanical impurities; in the right part of the body there is a cavity of a gravity settling tank 8 and nozzles for extracting separated oil products 9 and purified water 10. A nozzle II is attached to the hopper 7 for collecting mechanical impurities.

The cover, housing 1 is equipped with a reversing motor 12, a worm gear 13 for rotating shaft 4, and a worm gear 14 for rotating perforated pipe 3. The perforated pipe 3 and shaft 4 are mounted in bearings 15 and sealed with cuffs 16.

The device works as follows.

The oil-containing liquid, together with the mechanical impurities present in it, is supplied to the perforated pipe 3, from where it enters through the holes into the spiral channel formed by the inter-wall space wound onto the perforated pipe 3 by the tape 2. The liquid being cleaned passes through the spiral channel and under the influence of centrifugal forces is cleaned in it mechanical impurities deposited on the peripheral wall of the channel due to the difference in the specific gravities of the liquid and mechanical impurities.

Oil products as a lighter phase under the influence of centrifugal forces tend to the axis of rotation of the liquid and, therefore, move along the inner wall of the spiral channel. In order to improve the fineness of the cleaning, the tape 2 is made of a coalescing material which promotes the separation of a water-oil emulsion.

Water-oil mixture without a finely dispersed phase, coalesced in the spiral channel, passes into the cavity of the gravity settling tank 8, where

final separation of petroleum products from water. Oil products are discharged through pipe 9, clean water is through pipe 10.

When the spiral channel is skidding with a large number of mechanical suspensions and,

As a result, an increase in pressure at the device inlet automatically turns on a reversing electric motor 12, rotating a reduction gear 13, transmitting rotation to the shaft 4, which rewinds the polymer tape 2 to itself. The reduction gear 14 at this time is disconnected from the electric motor. Tape 2, directed by rollers 6, in its movement passes between the scrapers 5, which scrape off the precipitated mechanical impurities. Mechanical impurities, removed from the surface of the tape, fall into the cone 7 and are outputted through the pipe I.

After complete cleaning of the belt 2, rewound on the shaft 4, the direction of rotation of the reversing electric motor changes,

rotating gear 14, which transmits the rotation of the perforated pipe 3. The gear 13 at this time with the electric motor is disconnected. By fully rewinding the tape 2 to the perforated pipe 3, the electric motor 12 is turned off.

0 After cleaning, the spiral filter continues to operate in the main mode.

The proposed device allows for the purification of water from petroleum products and mechanical impurities, regardless of the input concentration of petroleum products and mechanical impurities in water, the grade of petroleum products, their viscosity and temperature. Preliminary experiments performed on the layout of the device confirm the possibility of obtaining the output of the device

0 purified water with a concentration of petroleum products up to 10 ppm with virtually no mechanical impurities, the removal of which in automatic mode allows you to avoid the cost of working time for the operator to regenerate the filter, which ultimately significantly increases the performance of the device.

Claims (1)

Invention Formula 0 A device for cleaning a fluid, comprising a housing, a spiral channel formed by a tape wound on a perforated pipe, a nozzle for introducing the liquid to be cleaned, and nozzles for discharging oil products of purified water, characterized in that, in order to improve the performance and depth of separation of a water-oil emulsion with a high content of mechanical impurities The device is equipped with a shaft.