RU2033841C1 - Ishchenko's installation for water cleaning - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: installation has a filter with grain load 1 on a gritty layer 2 located over a distribution system 3. Central pipe 4 with a gate in the lower part and tank 14 of wash water are mounted in the filter axially to its walls. Tank 14 is equipped with stand pipe 16 whose lower part is mounted in reservoir 19 for clean water with water-overflow lip 20 and exhaust pipe 21. Water-air pipe 17 with valve 18 is fastened on the stand pipe above the upper lever of central pipe 4. EFFECT: enhanced quality of water cleaning. 1 dwg

Description

 The invention relates to a device for water purification by filtration and can be used to purify water from a complex of impurities in the water supply during the preparation of drinking water, in environmental protection systems for the purification of toxic effluents before dumping them into a reservoir or reuse, and under conditions where reagent-free filtering not effective.

 A known installation for water purification, containing a filter with a granular load, the supply and outlet pipes [1] The washing mode is adjusted using an automatic filter control system using electronic aggregate unified system (ZAUS) units.

 The disadvantage of this installation is the difficulty of regulating the washing process of the filter.

A water treatment plant is also known, including a casing with a plunger, a filtering load, under which a water distribution system is installed, and a central pipe with a shutter installed axially to the casing walls, a wash water tank installed above the filtering load and having a pipe connected to the water-dissolving system, and Pipes for water inlet and outlet [2]
Regulation of the filter washing regime is carried out using a non-return valve and a valve installed on the pipe with a siphon (anywhere), which complicates the regulation, requires certain efforts due to the cumbersomeness of the valve, and it is necessary to install an electric actuator to control it, which reduces the quality of washing.

 The disadvantages of this installation are the difficulty of regulating the washing process of the filter and the low quality of washing.

 The aim of the invention is to simplify regulation and improve the quality of washing.

 The drawing schematically shows the installation in section.

The water treatment plant contains a filter with a granular charge 1 on a gravel layer 2 located above the distribution system 3. The filter contains a central pipe 4 mounted axially to its walls, equipped with a funnel 5 in the upper part and acting as a mixer in the water filtering mode, as well as the discharge path for dirty water in the washing mode of the granular charge 1. Funnel 5 is placed in the reaction chamber 6 with the plunger 7. In the lower part of the pipe 4 is equipped with a shutter 8 in the form of a disk on the shaft 9, resting on supports in the walls of the pipe 4. Nor cial position of the shutter horizontal, closed. In the open position is provided by turning it clockwise at an angle of up to 90 ^about using, for example, a handle on the shaft 9 (not shown in the drawing).

 The shaft 9 of the shutter 8 can be offset relative to the geometric horizontal axis of symmetry (eccentricity) of the shutter 4, and a latch 10, for example a magnet, can be fixed at the lower end of the pipe 4 to delay the shutter opening when the water pressure in the installation increases. Moreover, when the installation is filled with water, the elongated shoulder (right) of the shutter 8 experiences a greater force of water pressure than the short shoulder (left), and if it exceeds the force of the latch 10, the shutter 8 is in the open position. The shutter 8 returns to its original closed position under the influence of a clamp (magnet) when the force of water pressure on the elongated shoulder is less than the force of the clamp 10 on the shutter 8 due to the emptying of the installation from water.

 Above the funnel 5 on the supply pipe 11, a nozzle 12 is installed with an outlet downward to provide a directed energy-saturated flow of water into the central pipe 4. In addition, the supply pipe 11 is connected to a device 13 for introducing chemicals. Above the filter there is a clean wash water reserve tank 14 connected by a pipe 15 to the filter distribution system 3 and equipped with a riser 16. In the middle part of the riser 16, above the level of the upper edge of the central pipe 4, a water-air pipe 17 with a valve 18 is installed to regulate the filter washing mode. The lower part of the riser 16 is placed in a clean water tank 19, equipped with a water overflow threshold 20 and a discharge pipe 21.

 In the initial position, the filter load 1 in the dense state is placed on the gravel layer 2. The shutter 8 is in a horizontal closed position and can be fixed with a latch 10. The valve 18 on the air-pipe 17 is precisely adjusted to the air inlet 14 with a flow equal to the wash water flow in the washing mode of the filter load 1.

 Installation for water purification works as follows.

The raw raw water along with the chemical enters through the feed pipe 11 through the nozzle 12 into the funnel 5 of the central pipe 4. After thorough mixing in the central pipe 4, the water with the reagent overflows over the edge of the funnel 5 into the reaction chamber 6 and completely fills it, while filtering down through the granular loading 1. Air and gas products of chemical reactions through the plunger 7 is removed from the reaction chamber 6. The filtered water through the intermediate pipe 15 is pumped into the tank 14 stock of washing water, filling the latter. Then, along the riser 16, water from the tank 14 enters the clean water tank 19 and, overflowing through the water overflow threshold 20, fills it. Water from the tank 14 to the tank 19 also comes with a small fraction of the total flow rate through the air pipe 17. As accumulation in the pores of the load 1 of deposits removed from the filtered water, its hydraulic resistance increases, resulting in an increase in the pressure in the chamber 6. When it increases to a certain maximum permissible value according to operating conditions, it is necessary to transfer the installation to the washing mode of the filter load. This is done by turning the shutter 8 clockwise at an angle of 90 ^about using the shaft 9 and the control on the latter.

 In the case of the eccentricity of the shaft 9 on the shutter 8 and the presence of the lock 10, when the maximum allowable pressure appears in the installation in the filtering mode, the water pressure force on the elongated shoulder of the shutter 8 is greater than the counteracting force of the lock 10 and the shutter automatically opens by turning clockwise.

 Water from the chamber 6 through the central pipe 4 rushes into the sewer. During the entire washing process, unfiltered water from the supply pipe also enters the sewer. Mixing the water flowing through the supply pipe to the dirty wash water reduces the concentration of 4 deposits removed through the central pipe and prevents siltation of the sewage system. Due to the difference in water levels between the wash water tank 14 and the reaction chamber 6 in the intermediate pipe 15, a reverse flow of clean water with a wash flow occurs. Under the influence of this flow on load 1, the latter expands and goes into a "boiling" state. As the tank 14 is emptied from the water, it is filled with air through the water-air pipe 17. After the supply of washing water is exhausted, the washing of the filter load 1 will stop and it will take its initial lower position on the gravel layer 2. When the flow rate of the washing water in the central pipe 4 decreases to the flow rate of the water supply pipe 11 and thereby reduce its force impact on the shutter 8, the latter is rotated counterclockwise to its original horizontal closed position using the control or automatically , Prityanuvshy latch 10.

 Further, the processes of filtering water and washing the filter are repeated cyclically. While the lower part of the riser 16 is constantly flooded with water in the tank 19 of pure water.

Claims (1)

 Installation for water purification, including a housing with a plunger, a filter charge, under which a water distribution system is installed, and a central pipe with a shutter installed axially to the housing walls, a washing water tank installed above the filter load and having a pipe connected to the water distribution system and pipes for inlet and outlet of water, characterized in that, in order to simplify regulation and improve the quality of washing, it is equipped with a device for introducing chemicals, a reservoir for clean water from the water erelivnym threshold, the water supply pipe is provided with a nozzle and mounted on the central tube, the wash water tank is provided with a riser, whose lower part is installed in a tank of clean water and the water-air pipe which is provided with a valve attached to the riser above the central tube.