SU1762966A1 - Filter for liquid purification - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in enterprises employing COX-abrasive machining. The filter (6) for cleaning the liquid 00 contains a filter septum (OP) 2 placed in the pipeline 1 and an inaccurate regenerating device 3 in the form of a brush frame (L, P) 4 and a float - wing 5. The regenerating brush device is installed with a gentle movement in the plane OP in the direction perpendicular to the direction of motion K. The filter is equipped with a system of guides made in the form of cylinders 7 filled with hydraulic fluid 8. In cylinders 7 there are hollow sliders - floats 9, rigidly connected by rods with SCHR, Section Pipe filter media and guide cylinders are developed through bellows. 2 Il. Yo

Description

The invention relates to the field of mechanical engineering and can be used in plants using coolant (CLF) during the machining process.

A known filter for cleaning a fluid containing a pipeline, with a filter partition installed in it, regenerating a brush device in the form of a float mounted for movement along a guide rod and rigidly connected to the brush frame (see AS.-USSR G 5U250, cl . 01 D 35/16, 1974).

However, the regeneration of the filter septum in such a filter is possible only with fluctuations in the level of the liquid in the pipeline system.

Also known is a filter for cleaning liquids containing a filter septum placed in a pipeline. The regenerative brushing device in the form of a wing is a float mounted to move in the plane of the filter septum in the direction perpendicular to the direction of the liquid (see HP 1443932, class B 01 D 25/38, 35/16, 1988).

However, in this Filter the float of the wing moves along a fixed fixed axis, and as a result, jamming in the shaft-bore system may occur.

The aim of the invention is to increase the reliability of the filter.

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The goal is achieved by the fact that the filter is supplied with a guide made in the form of a sealed cylinder filled with liquid with a hollow piston, rigidly connected by means of a rod with a brush frame and made with a channel, which connects the cylinder and piston cavities.

Other technical solutions with features similar to the distinctive features of the proposed device were not identified during the analysis, and therefore the proposed technical solution meets the criterion of significant differences.

Figure 1 shows a general view of the filter J on yig.2 - section A-A in figure 1.

The filter for cleaning the fluid consists of a rectangular section pipe 1, in which the filter partition 2 is installed and the regenerative brush device 3 consisting of a brush frame (rigidly connected to the wing — float 5. The brush device is equipped with a system of guides 6 consisting of two guide cylinders 7, filled with hydraulic fluid 8, in which hollow floats float — the sliders 9 are rigidly connected by a rod 10 with a brush frame k.

To separate the fluid mediums of the pipeline 1 and the guide cylinders 7 with the air medium, the filter is provided with bellows 11 and 12, respectively. Wing - float is turned with convex surface 13 downwards. The upper extreme position of the brush frame 4 float - wing indicated by the position T.

The filter is equipped with a pipe 15 for removal of contaminants. In the hollow floats 9, holes 16 are made to allow the passage of hydraulic fluid as they move along the guide cylinders 7.

The float 5 is made in the form of a wing, the convex part 13 of which faces the lower part of the pipeline.

The filter works as follows.

Contaminated with mechanical impurities C0) {enters the pipeline 1 and is cleaned, the passage through the filter septum 2, on the surface of which mechanical impurities are deposited (in particular, grinding sludge) ..

Regenerating brush device 3 operates as follows.

The fluid moves through the pipeline 1 at a speed, runs on the wing-float 5 and flows around it from two sides. Moreover, the speed of the wing flow around its lower convex side VH is greater than the speed of the wing flow around the top side of V & This is because - particles of fluid flowing around the upper surface travel a smaller path in the same period of time than particles flowing around the lower, more prominent surface of the wing - the float 5 and, therefore, have a lower speed. According to the Bernoulli equation, where the velocity is less particles, more pressure and vice versa. Therefore, the pressure of the medium on the upper surface of the wing - float Pb will be greater than that on the lower PH, which leads to the appearance of the aerodynamic force Y, in this case directed in the opposite direction to the buoyant force X, with which the liquid tends to push the float to the surface.

In addition, when the floats - sliders 9 are immersed in the hydraulic fluid 8, the buoyancy force Z starts to act on them, which coincides in direction with the force X.

The float and the speed of movement of the fluid are chosen so that the force Y is greater than the sum of the forces X and Z. Then the wing-float 5, and with it the brush frame k is in the lower extreme position. Gradually, the filter septum 2 is contaminated with mechanical impurities. The velocity of the fluid VJK decreases, the force Y becomes less than the sum of X and Z, and the wing – float rises together with the brush frame C and the sliders floats 9 to the extreme upper position 1. At the same time, the brush frame k cleans the filter septum from sediment. The fluid velocity increases, the wing - float 5 eo of the brush frame, the sliders - floats 9 descend under the action of the force Y, while clearing the filter septum 2.

Thus, under the action of the reciprocating movements of the brush frame, the filter wall is periodically cleaned. At the same time, the grinding sludge deposited on the filter septum is poured into granules.

and accumulates in the pipe 15 from where it is removed by a screw conveyor to the container (not shown in the drawing).

The separation of the liquid medium of the pipeline 1 and the external environment is carried out by the bellows 11. The bellows 12 isolates the liquid in the cylinders 7 from the external environment by sealing the cylinders.

When moving the sliders forwards 9 along the cylinders 7, the hydraulic fluid passes through the holes 16, flows from one cavity of the cylinder 7 to the other, which ensures the smoothness of the stroke of the brush frame. .

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L o rm l o l invention

A fluid filter containing a filter screen placed in the pipeline, a brush frame rigidly connected to a movably mounted float having a wing shape, the convex part of which is facing downwards, and a guide, characterized in that The cylinder is made in the form of a sealed cylinder filled with liquid, with a hollow piston rigidly connected by means of a rod with a brush frame and made to a channel that communicates the piston and piston BVK) cavity ndra about

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Claims (1)

Claim A filter for cleaning liquid containing a filter baffle located in the pipeline, a brush 5 a frame rigidly connected to a movably mounted float having the shape of a wing, the convex part of which is facing down, and a guide, characterized in that, in order to increase the reliability of the filter, the guide is made in the form of a liquid-filled hermetic cylinder with a hollow piston rigidly connected by means of a rod with a brush frame and made with a channel informing the piston and piston cavity of the cylinder _about