SU1611383A1 - Apparatus for recovery of two-layer filters - Google Patents

Abstract

The invention relates to devices for the regeneration of granular filter media and makes it possible to increase their efficiency. The device consists of a mobile cart, a water distribution pipe on which hollow teeth 11 are mounted, equipped with sliding tips consisting of an upper fixed 13 and a lower movable 14 parts interconnected by a rod 17 equipped with a spring 18. With a small amount of wash water enters the load from the hollow tooth 11 through the holes 19. When the tip is deeper in its load and the flow of wash water increases, the spring 18 is compressed and the lower part of the tip moves downwards to form a ring In this case, the rinsing water flows through the opening 19 into the lower loading layer, and through the gap 20 into the upper one. 4 il.

Description

The invention relates to devices for the regeneration of granular filter media and can be used in water supply for water purification.

The aim of the invention is to increase the efficiency of regeneration of the filter loading.

Figure 1 shows a device for regenerating double-layer filters with ripper teeth not embedded in the load; FIG. 2 shows the same, with the ripper deepened into the load; on fig.Z - the tip of the tooth ripper; Fig.4 section aa on Fig.Z.

The device for the regeneration of double-layer filters consists of a movable trolley 1 (Fig. 1) installed in guides 2 mounted on the ceilings 3 of the filter chamber 4, and of which there is a dual-layer filtering load 5. Vertical tubes are mounted on the movable trolley driven by drive 6 7, connected to a flexible pipe 8 supplying wash water. Located on the drums 9. Vertical pipes 7 are connected to a water distribution pipe 10, on which are mounted gzolye teeth 11, equipped with tips 12. Tip and 12 (fig.Z)

include a fixed upper part 13 fixed on the hollow tooth 11 of the ripper,

and the lower part 14, installed with the possibility of vertical reciprocating variable. The upper part 13 is provided with a support rod 15 with a guide sleeve 16 located along the axis of the tip. The lower part 14 is attached to the upper part 13 by means of a stem 17 installed along the guide sleeve 16. A spring 18 is attached to the stem 17 above the control sleeve 16, which holds the lower part 14 of the tip to its upper part 13. The lower part 14 of the tip has a central hole 19. The edges of the tip pieces have a rounded shape, i.e. form an annular gap 20.

The device works as follows.

The regeneration of the load / g bilayer filter is performed in two steps.

In the first stage (Fig. 1), the water distribution pipe 10 with hollow teeth 11 is installed over a two-layer filtering / loading load 5. Wash water is supplied to flexible pipelines under pressure, put the water through the vertical pipes 7 into the water distribution pipe 10 and then into the hollow tooth 11. At this pressure, the leaching water is insufficient.

to overcome the spring springs 13 (Fig. 3) and the lower part 14 of the tip is pressed tightly against its upper part 13. As a result, the washing water enters 5 two-layer filter charge 5 from the central holes 19 of the tips 12. Water jets coming out of the central holes 19 at high speed, they destroy the film on the surface of the two-layer 10 filtering charge 5 and a / v into the suspended state of the grain of the upper layer of the two-layer filtering load 5. The flow of wash water, downstream 1m from the central holes 19, t5 soils are washed from the grains of the two-layer filtering load 5 and carried to the surface of the layer. The destroyed film and the soiled grains are removed by a horizontal flush flow down the drain. 0 Moving the mobile carriage 1 with the drive 6 along the chamber of the filter 4, regenerates the loading layer along the entire length of the chamber. Filter 4.

In the second stage (FIG. 2), the hollow teeth 11 5 are buried in the load 5 and installed above its bottom layer. Wash water is supplied to the flexible pipes 8 with a higher flow rate than at the first stage. Water enters the distribution pipe 0 of the pipe 10 and further into the hollow teeth 11 with tips 12. The spring 18 is compressed by the increased pressure on the lower part 14 of the tip (Fig. 3), the rod 17 is lowered along the right bushing 16 and between 5 the upper part 13 to the lower The part And of the tip 12 forms an annular gap 20, from which wash water flows out under pressure. The flow of wash water flowing out of the central hole 19 0 of the nozzles 12 causes the grain state of the lower layer to be weighed by a two-layer filtering load 5, washes away contaminants from the bottom and brings them to the upper layer. The flushing flow leaving the annular 5 gaps 20 of the nozzles 12 weighs and finally rinses the grains of the top end of the load 5. The washed contaminants 11 are removed by a horizontal flushing flow into the sewage.

0 The use of sliding tips 12, consisting of a fixed upper part 1113 51 of the movable lower part, 14 with a central hole 19 and the annular gap 20 formed, allows to form two flush flows during regeneration of the two-layer filtering load 5 which creates a pulsed mode of washing the loading grains, which makes it possible to effectively flush out contaminants from the lower loading layer, transport them to the upper layer and finally wash the contaminants from the upper loading layer 5. In addition, it creates Favorable conditions are given for the qualitative sorting of the two-layer load 6. Turbulent circulations form in the flow interaction zone, increasing the degree of washing of the grains of both loading layers.

Due to the rounded convex shape of the edges of the upper part 13 and the lower part 14 of the tip 12, the flushing flow leaves the annular gap 20 with minimal loss of pressure, which contributes to the formation of a turbulent circulation zone. In addition, this shape of the edges ensures that they are tightly sealed to enable the first stage of regeneration, since when the supply of washing water at the second stage of regeneration to the hollow teeth 11 stops, the loading grains roll off the edges of the tip parts and do not prevent the upper 13 from being pressed tightly. and the lower 14 parts under the action of the spring 18,

Claims (1)

Apparatus of the Invention A device for regenerating double-layer filters, including a trolley with an actuator, pipelines for supplying Wash-1D 80DY, a water distribution pipe and a ripper connected to it, made in the form of a comb with hollow teeth, equipped with tips, characterized in that, in order to increase efficiency regeneration of loading, tips made of sliding, consisting of a fixed upper part. fixed on the hollow tooth and provided with a horizontal supporting rod with a guide sleeve placed along the axis of the tip, and a lower part installed with the possibility of vertical reciprocating movement and connected to the upper through a spring-loaded stem located in the sleeve, with the edges of the tip parts in place their compounds have a rounded shape. jggggg gg gf @ gp S $ § . || Kf fffin HSil L 9 iУJ} M M JJ J V Y -five . .} UgiHGG} (. "1U. L LaL A L, / cL l y / b-XVf" J J A eleven