SU1016682A1 - Device for proportional metering of lime milk - Google Patents

Description

The invention relates to hydrogen, cooking and can be used in water treatment plants of thermal power plants and water supply enterprises. An open type device for metering readily soluble reagents is known, which contains a reagent tank and a siphon tube located in the tank with an outlet (1. A disadvantage of the known device is a change in the metering accuracy of the reagent depending on its level in the tank. The closest to that offered by Technical essence and achievable result is a device for automatic dosing of coagulant solution, containing a supply line of a reagent, including a container with a reagent, a pump and consumable bacho reagent, and the water supply line, which includes a water distributor, a booster and a water consumption tank connected by pipelines, with two communicating sealed tanks with hydraulic locks installed on the pipe connecting the reagent tank and the reagent supply tank. 2. The disadvantage of this device is The impossibility of dosing milk of lime in a predetermined ratio with the water flow due to the presence of stagnant zones in hydraulic locks and hermetic tanks, resulting in a decrease in the diameters of their openings. The purpose of the invention is to improve the accuracy of maintaining a predetermined ratio of milk of lime and water. This goal is achieved by the fact that in a device for proportional dosing of milk of lime comprising a milk of lime supply line including tank C; lime milk ,. pump and metering device with a calibrated outlet, and a water supply line, including water distributors, adjustable and unregulated water separators, a water trap with a hydraulic lock and a calibrated outlet, and two series with hydraulic locks and calibrated outlets, adjustable water separator through a direct metering unit connected with a clarifier, and an unregulated water separator - with the first of two serially connected metering units, the hydraulic lock of which is connected with the lighter, and its calibrated outlet is located above the second metering device, the outlet of which is calibrated is connected with the clarifier, and its hydraulic block is connected to the suction pipe of the pump, at the same time, straight through. the dispenser and hydraulic lock of the second dispenser, as well as the milk milk dispenser and the hydraulic lock of the first dispenser are interconnected by air ducts with restrictive flow orifices installed in them. The drawing is a schematic diagram of a device for proportioning lime milk proportionally. The device comprises a milk milk supply line and a clarifier water supply line. The milk of lime milk supply line includes a milk milk tank 1, a pump 2 and a metering device 3 with a calibrated you, a through hole 4, connected by a pipe 5. A metering device 3 is connected to a clarifier through the opening 4. The water supply line includes a water dispenser 6 and an adjustable 7 and an unregulated 8 water separators. An adjustable water separator 7 is connected to a continuous metering device 9 having a calibrated outlet opening 10 through which the dispenser is connected to the illuminator. Water flow control is performed by the setting device 11. The unregulated water separator 8 is connected by a pipeline with a dispenser 12 having a hydraulic lock 13 and a calibrated outlet 14. The dispenser 12 is installed above the dispenser 15, having a calibrated outlet 16 and hydraulic lock 17 ,. Through hydrosis atvor 13, the dispenser 12 is connected to the clarifier. The dispenser 15 is connected to the clarifier via a calibrated opening 16, and through a hydraulic lock 17 and pipe 18 is connected to a suction pipe of the pump 2 of the milk milk supply line. The dispenser 9 is connected by an air pipe 19, having a restrictive discharge diaphragm 20, with a water seal 17 of the dispenser 15. The dispenser 3 is connected by an air pipe 21 having a restrictive flow diaphragm 22, with a hydraulic lock 13 of the dispenser 12. The pipeline connecting the water separator 8 to the dispenser 12 is equipped with a dispenser diaphragm 23. The openings of the diaphragms 20 to 22 are small compared with the internal diameter of the air ducts 19 and 21, so the air flow through them is negligible. The hydraulic resistance of the air ducts .19 and 21 with an insignificant air consumption is practically zero. Calibrated holes 4, 14 and 16 are the same. A device for proportional dosing of milk of lime operates as follows.

Lime milk of constant concentration from the tank 1 is fed to the piston pump 2 and further along the pipeline 5 to the metering device 3. Through the opening 4, the milk of lime enters the clarifier. In addition to the milk of lime, pump 2 is supplied with water, and the amount depends on the clarifier capacity. The greater the capacity of the clarifier, the less water is fed into the pump 2 and the more concentrated the milk of lime that is fed into the dispenser 3.

From the water distributor 6water comes in the water separators 7. The quantity of water sampled by the water separator 7 is adjusted by the setting device 11. and is set in proportion to the clarifier consumption. From the cutters 7 and 8, the water enters the dispensers 9 and 1; 2. The water level in the dispenser 9 is variable and depends on the consumption of the clarifier. The dispenser 12 is supplied with a constant amount of iodine, slightly more than the capacity of the pump 2), independent of the flow rate of the clarifier and determined by the discharge diaphragm 23 and the constant water level in the shut-off valve 8, which is obtained due to its overflow.

Air duct 21 is lowered into dispenser 3 so that the level h - the distance from the end of air duct 21 to orifice 4 is equal to the level h - distance from the orifice 14 of the dispenser 12 to the overflow level in its air trap 13. Air is supplied through the diaphragm 22 under pressure . The pressure in the air duct 21 depends on the levels of water and lime milk in the dosing units 12 and 3. When the level of the lime pit in the dosing unit 3 decreases, the air pressure in the duct 21 and the air trap 13 decreases, resulting in the flow of water to the clarifier through the last

the water level in the dispenser 12 rises and is aligned with the level of milk of lime in the dispenser 3. Thus, the flow of water enters through the hole 14 in.

The second dispenser .15, varies depending on the capacity of pump 2. From the calibrated orifice 16 of the dispenser 15, water flows into the clarifier, and through its hydraulic lock 7 to the suction side the pump 2 pipeline.

 Air duct 19 is lowered into metering unit 9 so that level b is equal to level na. In the air duct 19 through

The diaphragm 20 is supplied with air, the pressure of which depends on the water level in the dispensers 15 and 9. The higher the water level in the dispenser 9, the greater the water level in the dispenser 15, as the amount of water flowing through the air seal 17 decreases. When the dosing process is stabilized, the levels hj and h in dispensers 3 and 12 are equal to

among themselves, hi, the levels of h- and hg are also equal in doses of 5 tori 9 and 15. As the clarifier decreases flow, the flow of water through conduit 18 to pump 2 increases, lime milk concentration after pump 2 decreases, and, conversely, as the flow rate increases The water flow into the pump decreases and the concentration of milk of lime increases. Thus, the concentration of milk of lime;

5 varies in proportion to the flow of water into the brightener and maintains a predetermined ratio of the costs of lime mineral and water.

The use of the invention allows automatically, without any regulating devices, to maintain with high accuracy the specified ratio of the flow of water and milk of lime into the clarifier.

Claims (1)

DEVICE FOR PROPORTIONAL DOSING OF LIME MILK., Containing a line for supplying milk of lime, including a tank with milk of lime, a pump and a dispenser with a calibrated outlet, and a line for supplying water, including a water distributor - adjustable and unregulated water-cutters, direct-flow dispenser with a water seal and a calibrated outlet, and two tori with water seals and calibrated outlet openings, connected in series between them, characterized in that, in order to increase to maintain a predetermined ratio of the flow rate of lime milk and water, in it an adjustable water-cutter is connected through a direct-flow batcher to a clarifier, and an unregulated water-cutter is connected to the first of two series-connected batchers, a water seal of which is connected to the illuminator, and its calibrated outlet is located above the second batcher , the calibrated outlet of which is connected to the illuminator, and its hydraulic actuator is connected to the suction pipe of the pump, while the direct-flow dispenser and water trap The second dispenser, as well as the milk milk dispenser and the water trap of the first dispenser, are interconnected by air ducts with restrictive flow diaphragms installed in them, dose fa-dv> JU. > V £ R? r-z? h - 1 - 3) ♦ 1 Sz ro go. I