SU1381173A1 - Device for water=air cooling of articles - Google Patents

Abstract

The invention relates to the field of mechanical engineering and metallurgy and can be used for accelerated cooling of forgings and rolled products. The purpose of the invention is to improve the quality of cooling by increasing the dispersion and uniformity of the spray cooler. The device comprises a housing with gas and liquid nozzles and interconnected through openings with mixing sections increasing in the direction of movement of the cooler. The openings of the adjacent chambers are arranged in a slanting order relative to one another. In the wall of the last mixing chamber there are holes for the expiration of the cooler. 1 il.

Description

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The invention relates to mechanical engineering and metallurgy and can be used for accelerated cooling of forgings and rolled products.

The purpose of the invention is to improve the quality of cooling by increasing the dispersion and uniformity of the spray of the cooler.

The drawing shows the device a General view, section.

The device contains a hollow body 1. At the end of the body, there is a gas nozzle 2, in which a liquid nozzle 3 is coaxially mounted, mounted in the flange 4 together with a sealing gasket 5 and a liquid feed pipe 6. Through the holes in the side wall of the body cavity is connected by a gas feed pipe 7 with a source of compressed air and a pressure gauge 8.

From the side of the gas and liquid nozzles, the mixing chamber 9, which represents a hollow glass, is fixed by screwing in with a casing;

With the mixing chamber 9, screwing together is bonded similarly to mixing chamber II, in the bottom of which a hole 12 is coaxially made. With the mixing chamber 11 screwing together the mixing chamber 13 with a conical (spherical, flat) inserted bottom in which the holes 14 are made.

The area of the holes 14 is made larger than 12, and the area of the hole 12 is greater than 10. The holes 10, 12 and 14 are located relative to each other in a checkerboard pattern.

The places of all the joints are fine with dense.

The device works as follows.

From the factory network, compressed air passes through the feed tube 7 into the cavity of the housing 1, then through the nozzle 2 into the mixing chamber 9, from where through the openings 10 to the mixing chamber 1I, then through the openings 12 to the mixing chamber 13, from which through the holes 14 are directed to the cooling zone of the forgings. The pressure of the compressed air in the housing 1 is fixed by a pressure gauge 8. The pressure of the compressed air in the housing 1 is controlled by the pressure sensor

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installed in front of the gas feed tube.

After the compressed air pressure required by the technology is set by the pressure gauge 8, water is started to flow through the nozzle 3. With the beginning of the water supply as a result of its inhibitory effect, the air pressure in the housing 1 increases, which is fixed by the pressure gauge 8.

The more water is added, the greater the pressure shown by the pressure gauge and the greater the cooling capacity of the water / air mixture, since its cooling capacity is determined mainly by the amount of water contained in it.

The air / water mixture in the mixing chambers is subjected to grinding and turbulence as a result of a sharp expansion of air and impacts against the walls of the mixing chambers, which ensures an even distribution of the sprayed liquid throughout the entire volume of the mixing chambers. As a result, a finely dispersed water-air mixture that is evenly distributed throughout the plume flows out of the outlet openings 14 to the cooled workpieces. When it enters the atmosphere, the liquid, evenly distributed in the water-air mixture, is additionally crushed due to a sharp expansion of the compressed air.

Claims (1)

In accordance with the technology, the required ratio between air and water is determined by the pressure gauge 8 by changing the amount of water added. Invention Formula A device for water-air cooling of products, comprising a housing with gas and liquid nozzles and a mixing chamber with openings for coolant flow, characterized in that, in order to improve the cooling quality by increasing the dispersion and uniformity of the spray cooler, the device is equipped with additional mixing chambers that are arranged in series and communicated with each other through holes with a variable flow section, increasing along the course of the movement of the cooler, placed in a checkerboard order with respect to each other. / U 12 11 10