SU1627212A1 - Self-cleaning filter - Google Patents

Abstract

The invention relates to the construction of vibration filters and can be used for cleaning masses, fuels and process water from mechanical impurities in shipbuilding and other areas of the national economy. The purpose of the invention is to improve the performance of the filter and improve the quality of filter cleaning.

Description

The invention relates to filtering, in particular, to the construction of vibration filters, and can be used to purify oils, fuel and technical water from mechanical impurities in shipbuilding, mechanical engineering and other areas of national economy.

The purpose of the acquisition is to increase the filter output and improve the quality of the filter element cleaning.

On fng. 1, the filter is shown; the overall view in Fig. 2 is a section A-A in Fig. 1, in Fig. 3 a view B in Fig. 1, in Fig. 4 a supply / THIS connection circuit to the hydraulic motor.

The self-cleaning filter consists of a core; i, ca 1, inlet 2 and outlet 3 nozzles. In the lower part of the housing 1 there is a sludge collector 4 with a valve 5 for accumulation and a liquid with sediment.

 housing 1 is equipped with a filter element 6, which through a hollow rod 7 with slots 8 is connected with a rod 9 rigidly fastened in the upper part to the motor case K), including shaft 11, with impeller 12 fixed on it and two unbalances 13 At the ends, the hydromotor has an inlet 14 and an outlet 15 nozzle and is connected to the outlet nozzle 3 of housing I using a controlled throttle 16 (Fig 4)

For adjusting the stroke of the rod 7 with slots 8, unbalances 13 are provided, which are moved in height in the slots 17 and secured by stoppers 18

Springs 19 and 20 are mounted on rods 7 and 9 to provide oscillatory movements of the filter element 6

The hollow rod 7 is installed with the possibility of reciprocating movements, and the slots 8 can be covered with a cover 21 by the amount h. Overlapping the slots 8 of the rod 7 is necessary to create a pulsation of the fluid due to the change in velocity and pressure transfer in the filter cavity (Fig. 1). the slots are not overlapped, in Fig 2 - overlapped)

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The filter works as follows

Before starting work, the filter is set up, the correct value of e of displacement of unbalances 13 and the amount of overlap h of slots 8 are set.

By changing the value of e, the amplitude of oscillations of the filter element 6 is established, and by changing the flow rate of the fluid through the hydraulic motor using an adjustable throttle 16, the frequency of oscillations of the filter element is determined depending on the contaminants and the liquid being cleaned, namely water, oil, fuel

The initial fluid enters the filter through the inlet 2, passes through the filter element 6, then through the internal cavity and the slots 8 in the rod 7 and is removed from the filter through the nozzle 3 Next, part of the liquid enters the throttle 16 and at the same time through the inlet 14 into the hydraulic motor that drives rotation of the impeller 12, and out through the outlet 14 and the throttle 16 in the hydraulic system

The shaft 11 with the impeller 12 and the unbalances 13 is of itself a centrifugal vibration exciter and is the source of the vibratory movement of the rods 7 and 9 and the filter element 6

When filtering, the liquid passes through the vibrating filter element 6 and the slots 8, which change their flow area

During vibration regeneration, the removal of contaminants from the surface of the filter element and from the pores is ensured by the inertial properties of particles that do not have time to follow its oscillations, as well as due to the occurrence of hydrodynamic flows in the cells of the filter element.

When passing through the slots 8, the fluid receives pulsations due to a change in speed and pressure drop on the filter element, creating an additional effect on contamination, and produces a pulse cleaning of the filter element

As a result of the combined effect of these factors, there is a high-quality regeneration of the filter element in the process of cleaning the liquid.

The soil particles removed from the surface and from the pores of the filter element b are suspended in the casing 1. At the same time, small particles coagulate into larger granules due to frequent collisions and forces of mutual attraction. When enlarged, solid particles under the action of gravitational forces precipitate into the sludge collector 4, from where they are removed together with the liquid through valve 5 after the end of the filtering process.

Compared with the prototype, the proposed invention allows for improved performance due to continuous filter operation; to improve the quality of filter element cleaning due to the constant discharge of contaminants as a result of a change in the amplitude of oscillations by changing the values of e and h, which creates a pulse cleaning, by changing the frequency of oscillations by changing the flow rate of the fluid through the hydraulic motor.

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In addition, the vibrating drive energy carrier is a liquid to be cleaned, which simplifies the filter control system.

Claims (1)

Invention Formula A self-cleaning filter comprising a vertical cylindrical body with a lid, inlet and outlet nozzles, a filter element and a vibration drive, including a housing and a hollow rod with slots connected to the filter element, characterized in that, in order to improve the filter performance and improve the quality of filter element cleaning, the vibration drive made in the form of a impeller fixed on the shaft with two unbalances adjustable by means of grooves and stoppers attached to the shaft ends, while the body of the vibrator is rigidly connected to the hollow w eye, mounted with the possibility of overlapping slits its housing cover and the cavity of the vibrator through the throttle body is connected with an outlet of the filter housing. fig g /four VidB figs