SU420689A1 - DEVICE FOR REFINING ALLOYS BY INERT GASES AND SALTES PAIRS - Google Patents

Description

one

The invention relates to the field of foundry and metallurgical production, but it can also be used in those areas of technology that require the introduction of vapor or gaseous products into any liquid medium.

A device for refining alloys with inert gases and / or vapors of salts is known, which includes an evaporator with a supply of inert gas and a discharge tube sealed in it.

The proposed device is characterized in that it is provided with a gas distributor and valve device with a pneumatic cylinder placed on a branch pipe, the upper end of which is connected to the pneumatic cylinder. The gas distributor is made in the form of an external fixed and internal cylinders, while the inner cylinder is provided with annular grooves to accommodate them. The seal manufacter and for supplying an inert gas through the system of radial and axial channels to the pneumatic cylinder of the valve device, and the outer provided with corresponding holes. The inner cylinder, the evaporator and the pneumatic cylinder are arranged to rotate them relative to the axis of the outer cylinder. The lower end of the outlet tube is inclined toward its vertical part at an angle of not less than 90 °.

This makes it possible to increase the efficiency and intensification of the refining.

The drawing shows the proposed device, a General view.

It has a cylinder 1 fixedly mounted on a console 2, movably mounted on column 3 and having the possibility of movement in the vertical direction with the help of a screw drive 4 and an electric motor 5.

Cylinder 7 with annular grooves is located inside the cyotindra 1 on the support subdivision 6, some of which serve to place the sealing cuffs 8 in them, while others opposite the cylinder bores are designed to supply radial and axial channels 9 and 10 through the system. inert gas and compressed air, respectively, to the evaporator 11 and to the pyram-cylinder 12 of the valve device 13. In the upper part, the inner cylinder 7 is connected to the chain-driven rotation 14 from the electric motor 15. On the side surface of the cylinder 1 there are holes 16, corresponding to the annular grooves.

The valve device 13 serves to block the inlet of the outlet of the tube 17, hermetically fixed in the evaporator 11 and intended to supply the vapor of the sun and inert gas to the melt.

For the sublimation of salt, an electric stove serves as a heating device.

resistors 18, and to cool the evaporator after the refining operation, a fan 19. Salt is loaded into the evaporator through a pipe 20 with a hermetic damper.

In order to prevent compressed air from falling into the inert gas drip in the event of insufficient sealing of the cuffs, there is a leakage channel 21.

The device works as follows.

A refill 22 with melt is fed to the refining position. The refining device is brought to the working position and fixed. The furnace was brought to a temperature sufficient to start the sublimation of salt in 2-3 minutes when the evaporator was lowered into it. The pneumatic cylinder 12 is activated from the corresponding relay, the valve retracts upwards, opening the opening of the outlet tube 17. Then the inert gas inlet valve is activated and the system briefly blows.

The next moment, a command is sent to the motor 5 of the mechanism for lowering the device and simultaneously to the motor 15 of the rotational drive 14. For 2-3 minutes, the alloy is purged with an inert gas until salt is sublimated in the charger and then additionally with salt vapors.

At the end of the refining cycle, the valve 13 closes the opening of the outlet tube 17, stopping the flow of gas and salt vapors into the melt. At the same time, the entire device rises and the rotation stops. Some time inert gas continues to flow into the evaporator, creating a counter-pressure to the vapor of salt. At this time, intense

cooling the evaporator with a fan 19. The vapors of the salt condense this.

After the required time for the alloy to stand, the jaw umbrella 23 times closes. the refining unit is retracted, the alloy is ready for further use.

The subject of invention

1. A device for refining alloys with inert gases and / or vapors of salts, including an evaporator with an inert gas supply to it and a tightly fixed outlet pipe in it, which is equipped with a gas distributor and valve device with an increase in the efficiency and intensification of refining the pneumatic cylinder placed on the outlet tube, the upper end of which is connected to the pneumatic cylinder, the gas distributor is made in the form of an external fixed and inner cylinder, while the inner cylinder is provided with annular grooves serving to accommodate sealing cups and for supplying the chambered system of radial and axial channels of inert gas to the evaporator and compressed air to the pneumatic cycling valve, and the outer holes with corresponding holes, the inner cylinder, the inventor and the pneumatic cylinder are made with the possibility of rotation relative to the axis of the outer cylinder.

2. Device but n. 1, characterized in that the lower end of the outlet tube is made inclined to its vertical part at an angle of not less than 90 °.