SU929158A1 - Apparatus for cleaning liquids - Google Patents

Description

(54) DEVICE FOR CLEANING LIQUIDS

one

The invention relates to devices for the purification of liquids from solid particles and can be applied in the metalworking industry for the purification of cutting fluids from sludge and fine chips.

A filter for cleaning liquids from solid particles is known, which comprises a cylindrical body, in the upper part of which there is a fixed filter septum and nozzles for supplying and discharging liquid.

In order to carry out continuous self-cleaning of the filter septum, in the middle part under it there is a rotary guide element, made in the form of a spherical surface 1.

The disadvantage of this device is that it can clean a small amount of contaminated liquid, which does not allow it to be used for cleaning coolant in machine shops of the machine-building industry.

In addition, the implementation of the jetting element in the form of a spherical surface contributes to the creation of a small cleaning zone of the filter septum, which will be located around the point where the sphere touches the fixed partition. Closest to the invention is a device for cleaning liquids from

5 solid particles, comprising a housing with nozzles for feeding the suspension and removing the filtrate, a cylindrical filter septum, an injection and drain chamber, scrapers for regenerating the filter septum and nozzles for discharging the sediment. In this device, solid particles are deposited on the inner surface of the cylinder and periodically removed by scrapers mounted on a piston that can move along the perforated axis.

5 cylinder 2.

The prior art device allows purification of large volumes of liquid, but the quality of cleaning will be low, since almost all solid particles will pass through the filter element through it at the initial cleaning time until a sediment layer forms. Since the shape of the filter element is cylindrical, the upper part of the cylinder for a long time will be without sediment and

solids may pass into the purified liquid.

To remove the sediment with scrapers it is necessary to apply considerable force, since the sediment is very compacted. The application of large forces to the piston can deform the cylindrical shell. In addition, the system for unloading sediment from the cylinder cavity requires the supply of flushing fluid, for which it is necessary to shut off the corresponding shut-off valves. All this complicates the design and makes it difficult to automate the maintenance of the device.

The purpose of the invention is to improve the quality of cleaning large volumes of liquids and simplify the discharge of sediment.

The goal is achieved by the fact that in the device comprising a housing with nozzles for supplying liquid and draining filtrate, a filter partition installed in the housing, an injection chamber located under the filtering partition, means for regenerating the latter and outlet pipes for draining the precipitate, the means for regeneration is made in the form a row of cams installed under the filter septum with the possibility of simultaneous rotation of the cams of each row and the nozzles for supplying fluid are concentric in the nozzles l sludge and outlet placed at the bottom of the pump chamber, the nozzles for supplying liquid are conical nut for adjusting the magnitude of the through-flow nozzle for discharging the precipitate.

It is advisable to perform the filter septum in the form of a flat metal mesh with filter cloth or paper arranged on it.

The drawing shows the device, General view.

The device consists of a housing 1, a filter septum 2 installed therein, a collector with nozzles 3 for supplying liquid (suspension), an injection chamber 4 in which nozzles 5 with nuts 6 are provided for draining sludge to adjust the annular holes between the nozzles 3 and 5. For regeneration of the filter septum below, cams 7 are installed synchronously rotating in the row, but in antiphase with the adjacent row. A drain chamber 8 with a pipe for removal of the filtrate is located above the filter septum. The device also has a pallet 9, in which a scraper conveyor 10 is installed.

The device works as follows.

The contaminated liquid is fed through the nozzles 3 into the discharge chamber 4. The liquid is filtered through the partition 2 and out of the device from the drain chamber 8 through the nozzle. The solid particles are captured by the upwardly moving fluid and partially settle on the underside of the filter septum 2, the larger particles, not reaching the septum 2, fall downward and are carried away by the fluid flow through the annular holes formed between the nozzles 5 by the nuts 6. Solids together with part of the fluid get into the sump 9 or gravity settling tank, from where they are removed by the scraper conveyor 10, and the fluid, when it reaches a high level, is drained through the pipe 11 into the tank for further purification. The process of cleaning the filter septum from the sediment of solid particles is carried out constantly with the help of vibrations transmitted by the cams, which are located on synchronous rotating shafts.

The implementation of the discharge unit in the form of conical holes with adjustable nuts allows the elimination of impermeable zones in which the deposition of solid particles can occur. The partition cleaning mechanism ensures the regeneration of the filter septum along its entire plane. The proposed design is easily automated and does not require manual labor for maintenance.

The proposed device will allow the emulsion to be cleaned of any kinds of sludge, for fine technological processes of mechanical engineering with a degree of contamination after cleaning 0.001-0.003% or 0.01-0.03 g / l, the degree of purification is 98.0-99.0% .

Claims (2)

1. A device for cleaning liquids, comprising a housing with nozzles for supplying a liquid and draining a filtrate, a filter partition installed in the housing, an injection chamber located under the filter partition, means for regenerating the latter, and a drainage outlet, characterized in that quality of cleaning large volumes of liquids and simplifying the discharge of sediment; the means for regeneration is made in the form of a series of cams installed under or above the filter septum with the possibility of synchronous rotation of the cams of each row, and the liquid supply nozzles are arranged concentrically in the nozzles for draining the sediment and are located in the lower part of the discharge chamber, while the fluid nozzles have conical nuts for adjusting the flow area of the nozzles for draining the sediment. 2. A device according to claim 1, characterized in that the filter partition is made in the form of a flat metal mesh with filter cloth or paper located on it. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 216623, cl. On 01 D 25/04, 1967. 2. USSR author's certificate number 587966, cl. B 01 D 29/38, 1975.