Self-cleaning radial filter

 

(57) Abstract:

The invention is intended to provide automatic regeneration of the filter material. The filter includes a tank-a tank located therein movable glass fitted float device in which is placed a cylinder mesh with the receiving surface, having sealed the roof and the bottom, elastic porous filtering material placed between a fixed set in the cylinder perforated walls and a conical diaphragm, fixed on the perforated rod established along the axis of the cylinder with the vertical reciprocating movement, equipped with a ballast tank having a float valve, located above the cylinder head, spring-loaded latch that is connected with a flexible coupling with the tank filled by pipeline, the upper end of which is located above the level of the overflow edge of the ballast tanks, and in the lower part of the perforated rod combined with switchgear, made in the form of tipping capacity with counterweight. The design of the filter allows to simplify maintenance, improve reliability, and the ability of RA who supports effective purification of water if it prone organoiron complexes. 2 Il.

The invention relates to water supply, in particular to the purification of natural waters from specific pollutants, including dissolved iron salts.

Known slow filter O. M. ajrapetova (Klyachko C. A., Apelcin N. E. Preparation of water for industrial and municipal water supply. - M.: stroiizdat, 1962, pages 282-289, Fig. VII - 8), containing two sub-tanks, made in the ground and parallel to the channel, separated water dam, equipped with inlet channels and system Shandarov to provide hydraulic regeneration. The filter has a filter loading and drainage system, communicated with a reservoir of clean water.

The disadvantages of the known devices are low performance related, in particular, of large dimensions, complexity of design and operation, and low efficiency of the regeneration system load due to the complexity of ensuring uniform flushing of contaminants from the surface of the boot and the inability to regenerate dalmatinova layer.

Known slow filter (Patent USSR N 1771470, MKI 02 F 1/64, 01 D 24/46, 1993), consisting of a reservoir tank, the cylindrical components which ranks the bottom and the cover, the Central tube with mesh water surface. Tank-the tank also contains a reservoir, the combined exhaust tube filtrate, which has a perforated risers, and its base supplied with a gasket and is supported on the supporting girders. At the bottom of the tank-the tank has a chamber Deposit accumulation, and over it is placed the aeration device.

The disadvantage of this technical solution are low performance, due to the complexity of design and regeneration of filter loading during operation.

Closest to the invention to the technical essence and the achieved technical effect is a device for removal of iron from groundwater (RF Patent N 2080157, MKI 01 D 36/04, 01 D 24/46; C 02 F 1/64, 1997), containing a reservoir tank located therein mesh cylinder having a sealed lid and the bottom, placed in the cylinders elastic porous load between the perforated conical walls and conical diaphragms. Conical diaphragm mounted on perforated rods installed on the axis of the cylinders with vertical reciprocating movement, evenly is O. The device is also equipped with means for feeding and aeration of raw water, and sewers for the drainage of the filtrate.

A disadvantage of the known technical solutions are low performance due to the need to ensure continuous monitoring regime of its operation, the necessity of supplying additional equipment for carrying out the regeneration, in particular the lifting mechanisms for loading of the rolling stock, the need for a specific set of operations associated with regeneration, which generally complicates the operation of the device.

The objective of the invention is to provide an automatic regeneration of the filter material as it collateralize pollution and a corresponding increase of water level in the settling tank, which will improve performance of the filter, in particular, will simplify the service and, accordingly, reduce operating costs, will also help to prevent "leakage" of contaminants in the filtrate with a sharp deterioration in the quality of the treated fluid or changing other conditions of operation of the filter, eliminating the need for constant monitoring of his regime, therefore on.

This problem is solved as follows. In the known device containing a reservoir tank located therein a cylinder mesh with the receiving surface, having a sealed cover and bottom, elastic porous filtering material placed in the cylinder between the perforated walls and a conical diaphragm, fixed on the perforated rod established along the axis of the cylinder with the vertical reciprocating movement, and provided with means for feeding and aeration of raw water and filtrate discharge, cylinder mesh with the receiving surface is placed in the movable glass with float device and culvert openings, placed above the cylinder lid and perforated rod equipped with a ballast tank, with the float valve installed above the cylinder head, spring-loaded latch that is connected with a flexible coupling with the reservoir filled with the pipe, the upper end of which is located above the level of the overflow edge of the ballast tanks and switchgear, made in the form of tipping capacity installed under the bottom of the reservoir tank, combined with dignitarie of the prototype of the features of the invention are:

- cylinder with mesh water surface is placed in the movable glass;

- movable glass has a float device and culvert openings, placed above the cylinder cover;

- perforated rod equipped with a ballast tank having a float valve mounted on the cylinder head;

- perforated rod equipped with a spring-loaded latch that is connected with a flexible coupling with the reservoir filled with the pipe, the upper end of which is located above the level of the overflow edge of the ballast capacity:

- perforated rod equipped with switchgear, made in the form of tipping capacity installed under the bottom of the reservoir tank and combined with the bottom end of the perforated stock, providing drainage of the filtrate, the precipitate and wash water.

The cylinder mesh with the receiving surface is placed in the movable glass that provides interrupt the flow of water from the reservoir tank into the slot gap between the bottom and perforated rod when regeneration of the filter material and then filling the cleaned fluid reservoir tank.

Movable glass has Pople who, corresponding marks the location of the float device, the floating cups - move it up after regeneration of the filter material and thereby removing the filter on the operating mode. Culvert openings in the wall of the Cup located above the cylinder lid provide water filling the upper part of the glass during the working period of the filter and emptying her and ballast tank during regeneration of the filter material.

Perforated rod equipped with a ballast tank that provides movement of the perforated rod down when filling the ballast tanks with water and pressing the elastic porous download. The ballast tank is installed above the cylinder head so that its upper edge is located at the level of the maximum allowable tank filling-tank that provides the output of the filter regeneration only when the limit pressure losses in the filtration material. Ballast tank has a float valve that allows the water from the ballast tanks and buoyancy her in drained condition.

Perforated rod equipped with a spring-loaded latch connected to the Noah edges of the ballast tanks, that ensures retention of the rod in the up position throughout the working period of the filter and the ability to move the rod down at the maximum operating level of the water in the tank.

Perforated rod equipped with switchgear installed under the bottom of the tank and aligned with the bottom end of the perforated rod that allows you to switch from stock water due to the vertical movement of the stem.

Switchgear, providing a filtrate discharge, sediment and water wash, made in the form of tipping capacity that allows you to reset the sludge and wash water to the appropriate line with flow perforated rod down and take the filtrate in the fresh water tank when you return the rod to its original position in which the capacity of the switchgear, spontaneously occupy a considerable area, due to the counterweight switches the feed pipe clean water.

Thus, it provides a causal link together the distinctive features of the claimed invention and achieved technical result: automatic regeneration fil the invention.

In the drawings shows the proposed self-cleaning radial filter (cross section) in the operating mode (Fig. 1) and in the regeneration mode filter loading (Fig. 2).

Self-cleaning radial filter includes a reservoir tank 1, in which the movable glass 2 equipped with a float device 3, the cylindrical unit with an airtight cover 4 and a bottom 5, and a mesh water-receiving surface 6, mounted on the pivotal frame cylinder (conventionally not shown) placed therein elastic porous filter loading 7, for example of polyurethane foam placed between the fixed perforated conical partitions 8, mounted on the pivotal frame of the cylinder, dividing the cylinder into sections, and movable conical diaphragms 9, mounted on the hollow perforated rod 10, concentrically located with limited vertical reciprocating movement in a cylindrical block. On the upper end of the perforated rod 10 above the cylinder head 4 is fixed ballast tank 11 equipped with a float valve 12, the overflow edge which is located at the level of the maximum water level in rezé is concerning switch power device 13, made in the form of tipping capacity with counterweight 14, communicating with the teams trays and piping drainage of the filtrate 15 and wash water 16. The conical sediment accumulation zone 17, the reservoir tank 1 has a slit gap 18 near the rolling rod 10, which is fixed to the valve 19 for the release of sediment. In the upper part of the tank-the tank 1 has an annular intake chamber 20, in which after aeration is supplied original liquid, and above the level of the overflow edge of the ballast tank 11 to the tank sump 1 summarized the pipeline 21, providing lling 23, which is connected with a flexible coupling with the spring loaded detent 22.

Self-cleaning radial filter works as follows.

The processed liquid, such as water containing dissolved iron salts from underground source of drinking water by means of water-lifting equipment installed in wells, served in the receiving chamber 20 of the reservoir tank 1 with preliminary aeration due to, for example, free spout from a height of not less than 0.5 m In the future, if a sufficiently long stay oxygenated water in the settling tank 1 cableways in the chamber Deposit accumulation 17. Partially purified by sedimentation water through the gap formed by the bottom edge of the Cup 2 and the bottom of the reservoir tank 1 is supplied to the mesh to the receiving surface 6 of the cylindrical block, rigidly fixed vertical bearing rods (conventionally not shown) on the bottom of the reservoir tank 1. Water passing through the grid 6, enters the filtering material 7 made of elastic porous material, for example, otkryitogo polyurethane foam placed between the fixedly mounted on the pivotal frame cylinder perforated conical partition 8 dividing the cylinder into sections, and movable conical diaphragms 9, rigidly mounted on the hollow perforated rod 10. In filtering 7 is formed radial filtration flow is directed to a hollow perforated rod 10, which is purified from impurities, water flows to the distribution device 13. The presence of the waterproof cover 4 and the bottom 5 of the cylindrical unit provides a smooth flow of water in them only through a side surface of the filter 7 download, fenced grid 6, mounted on a rigid truss frame cylinder. After the formation of the catalytic film the division of dissolved iron compounds from water the filter provides complete cleaning and water is discharged through a hollow rod 10 passes through the distribution device 13 and line 15 into the reservoir of clean water. Compounds of iron released from the treated water, gradually accumulate in the pores of the filtration load 7 and, in accordance with the intensity of this process, increase of pressure loss in it. When the speed of filtration of 0.2...0.5 m/h more than 90% of iron compounds released from the treated water, retained in the filtering 7 at a distance of 0.15 m from the grid 6. In this regard, the diameter of the cylindrical block is selected depending on the content of iron in the source water and the effect of settling it in the free volume in the settling tank 1. For example, when the concentration of iron in the source water to 10 mg/l and defending it in free up to 4...5 h the iron content is reduced by 30...45%, and further filtered through a layer of polyurethane foam with a thickness of 0.5 m iron content in the filtrate does not exceed the permissible limit of 0.3 mg/L. In this case, the diameter of the cylindrical block should be not less than 1.1 m to match the diameter of the hollow perforated rod 10 (0.1 m). If the rate of filtration in the immediate vicinity of the grid 6 is uvelichivaetsja to 4.4 m/H. As filtration of the treated water in the pores of the filter loading 7 accumulate compounds of iron, reducing the pore volume and, consequently, increasing the filtration resistance of the load 7 and the pressure loss in it. At low speeds filtering in the surface layer of the boot 7 is formed biofilm, which develops iron bacteria, contributing to the intensity of the oxidation process of iron salts, including hard organoiron complexes, putting them in undissolved state. The growth rate of head loss in the filter material 7 download depends in particular on the content of iron in the source water, the contaminant capacity of the load 7 and compressibility under the action of hydrostatic pressure. The accumulation of dirt in the filter loading 7 increases the water level in the settling tank 1 and, accordingly, increases the pressure gradient, which causes slight compression, which as well as the accumulation of dirt in the pores determines the increase in filtration resistance. In this regard, the maximum allowable head loss in filter loading 6 should be limited and in this case they should not exceed 0.7. ..1.0 m, which ensures a negligible effect of the upstream reservoir tank 1 with regular height "stock" - 0.3 m should not exceed the constructive height of the cylindrical block more than 1.3 m or the maximum permissible filling of the reservoir tank 1 should not be more than 1.0 m above the location of the cap 4 cylinder.

On the upper end of the hollow perforated rod 10 is installed ballast container 11, the overflow edge which is located at the level corresponding to the maximum filling of the reservoir tank 1. In the process of water purification and accumulation of impurities in the load 7 gradually increases the water level in the settling tank 1 and after reaching the maximum allowable filling filling ballast tanks 11, at this point, the float valve 12 is held in the closed position and the pipe 21 at the same time filling the tank 23, which is under the influence of increasing mass moves down, while the spring retainer 22 frees the perforated rod 10, which is under the influence of water-filled ballast tank 11 is moved down, the lower end of the tilting capacity distribution device 13, which ensures the discharge of wash water and sludge collection tray, connected with the pipe 16. When to Elenovo on a collecting tray of the pipeline 16, which provides rotation to the bottom of tank 23 with the formation of cracks. After emptying the tank 23 is returned to its upper position due to the impact of a spring-loaded latch.

When moving rod 10 down together with him and move the movable conical diaphragm 9, providing the extraction of impurities from the filter load 7, which through a perforation fixed partitions 8 are on the lower diaphragm 9, the surfaces of which are received in the hollow perforated rod 10 and are discharged through the discharging capacity of the distribution device 13 in the pipeline 16. At the same time when moving rod 10 down opens the cork valve 19 and the resulting gap 18 is reset sediment from sediment accumulation area 17, which also passes through a distribution device 13 in the pipeline 16. When you open a slit gap of 18 water from the reservoir tank 1 is reset and when the level in the tank 1 falls below the float valve 12, is discharged ballast water from the tank 11 through the drain holes in the wall of the Cup 2 and at the top level to the bottom of the float device 3 glass 2 is lowered down to closing its lower edge with the bottom asaeda and when you raise it to the level of the bottom emptied ballast tanks 11 closes the float valve 12, ensuring its emergence, through which the hollow rod 10 is moved upward, closing the slit gap 18 and valve 19. Stops the wash water discharge and sediment, spring-loaded latch 22 is in the hook with the rod 10, locking him in the highest position, and the capacity of the distribution device 13 under the action of the counterweight 14 switches the flow of water coming from the shaft 10 to the pipeline 15. At the same time when the water level in the tank 1 through the float device 3 is secured floating Cup 2, the purified water is again sent to the receiving surface 6, and the cleaning process is resumed.

Self-cleaning radial filter containing a reservoir tank located therein a cylinder mesh with the receiving surface, having a sealed cover and bottom, elastic porous filtering material placed in the cylinder between a fixed set in the cylinder perforated walls and a conical diaphragm, fixed on the perforated rod established along the axis of the cylinder with the vertical reciprocating movement, and means to feed, aeration of raw water and filtrate discharge, characterized in that the cylinder is propusknye holes, placed above the cylinder lid and perforated rod equipped with a ballast tank having a float valve mounted on the cylinder head, spring-loaded latch that is connected with a flexible coupling with the reservoir filled with the pipe, the upper end of which is located above the overflow edge of the ballast tanks, as well as switchgear, made in the form of tipping capacity installed under the bottom of the reservoir tank and combined with the bottom end of the perforated stock, providing drainage of the filtrate, the precipitate and wash water.

 

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