SU846580A1 - Tempering tank - Google Patents

Description

(54) HANGING TANK

one

The invention relates to heat treatment, in particular, devices intended for rapid cooling of products in various liquid media (for example, in water or oil) during heat treatment, in which forced circulation of quenching fluid is used to increase the uniformity of cooling, and can be used in engineering.

Quenching bucks with forced circulation of cooling liquid are known, which contain devices for the organized movement of quenching media. The design of these devices depends on the geometric shape of the products being cooled. For example, when quenching cold rolling rolls, the fixture consists of an upper annular tube, from which several vertical tubes with holes along the length extend to feed the odes. For hardening dies, tools are used consisting of either four tubes with holes or three separate nozzles I J.

The disadvantage of this design is the need to replace the type of device depending on the geometric shape of the cooled products in order to ensure uniform heat removal from their surfaces.

Quenching tanks containing blades, fans or mixers are known. 2..

The disadvantage of these structures is their complexity and the need to allocate a significant volume of the tank.

10 for liquid mixing devices.

The closest in technical essence to the invention is a quenching tank, comprising a body and

15 a coolant supply device including a nozzle. A vertical nozzle is installed in the center of the bottom of the quenching tank, through which the quenching fluid from the pump is supplied.

20 Such a circulation pattern is effective for cooling hollow articles when. heat exchange from the inner surface is hindered Sz}.

The disadvantage of this design

25 is that, when hardening solid products, a jet of liquid can create local supercooling.

The purpose of the invention is to provide uniform cooling over the surface of products of a different configuration.

The goal is achieved by the fact that the coolant supply device is equipped with collectors coaxial to the nozzle installed above the bottom of the housing. with nozzles.

FIG. 1 shows the device, a general view; FIG. 2 shows a section A-L in FIG. 1;

The quenching tank consists of a welded body 1, a drain pocket 2, made in the upper part of the tank, three collectors 3,4 and 5 with nozzles located above the tank bottom, nozzle 6 located above the bottom along the tank axis. The circulation pump 7 is connected to the collectors 3.4 and 5 and the central nozzle 6 with supply pipes with valves 8.9, 10 and 11.,

The top of the tank has a ring collector 12 for taking water.

and an annular manifold 13 for supplying water from a water main.

The device works as follows.

Before quenching, depending on the geometric shape of the product to be cooled, open the valves of the collectors 3, 4 and 5, the jets of which are directed along the surfaces of the product. The remaining valves are closed. For example, when cooling type shell (hollow cylinder) open valves

9 and 11 and close the valves 8 and 10, while cooling the product like a plate immersed in the tank vertically, open the valves 9 and 10 and close the valves 8 and 11. During the quenching period, the pump pumps the quenching medium out of the tank, sucking it through the intake manifold 12 and press into the open collector system back to the tank. Through the annular manifold 13 in the tank enters the water from the water supply. The excess water is discharged into the e-pocket 2 in the sewer system. The application of the present invention allows the hardening of products of various geometric shapes without the use of special tools, while ensuring their uniform cooling.

Claims (3)

1.Sokolov K.N. Equipment for thermal workshops, Moscow-Sverdlovsk, 30 Mashgiz, 1957, p. 272-273. 2. Electrothermal equipment. Directory. Ed. A.P. Viola, Gauzen et al. M., Energie, 1967, p. 152. 35 3. The patent of Czechoslovakia No. 148690, cl. 18 of 1/62, 1978. Xll