SU1344540A1 - Pneumatic feeder for supplying flux when welding - Google Patents

Abstract

This invention relates to devices for supplying flux in installations for automatic submerged-arc welding. The aim of the invention is to improve the reliability of the pneumopitel. The pneumatic feeder for supplying flux contains a hermetic chamber 1, a shut-off charging valve 4, a safety valve 5 on the camera body 1, a quick exhaust valve 12, a check valve 13 connected to the chamber 1 and the mixing chamber 14 through a discharge valve 15 and a nozzle 16, and a flux valve Iodine 17. Pneumatic relay 6 is connected to F (chamber 1 is 1). Distributor 7 with valve 4. Electrically controlled valve 8 is connected via pressure regulator 9 and dehumidifier 10 to the fresh air line. Air throttle 11 is connected to valve 8. Compressed air remaining in chamber 1 after cessation of the next dose of flux through the return valve: valve 13 and valve 12 of the rapid exhaust enters through valve 15 and the nozzle 16 into f1 1pipe 17, freeing it from the remaining flux . 1 ill. (L / - 00 4 4 recounted

Description

This invention relates to devices for supplying flux in installations for automatic submerged-arc welding.

The aim of the invention is to improve the reliability of the pneumopitel.

The drawing shows the supply circuit for supplying flux.

The pneumatic feeder for flux supply contains a sealed chamber 1 for fluxes 2, which is equipped with a feed funnel 3, shutting off the loading valve 4, safety valve 5 connected by duct to the cavity of chamber 1, pneumatic pressure switch 6 connected by means of pneumatic valve to gyu. The height of the chamber 1, the pneumatic distributor 7 of the air supply control-. valve 4 and feeder chamber 1, connected by a duct to the working cavity of the blocking valve 4, electrically controlled valve 8, connected via pressure regulator 9 and dehumidifier 10 to a compressed air line, 11) connected to an air throttle 11, connected to the outlet of valve 8 , a quick exhaust valve 12, a check valve 13 connected to the cavity of chamber 1 and the mixing chamber 14 through a discharge chamber 15, a nozzle 16 and a flux duct 17 connected to the outlet of the mixing chamber 14.

Pneumatic feeder for supplying flux works as follows.

The flux 2 is loaded into the chamber 1 through the funnel 3 and the shut-off charging valve 4. Compressed air passing through the dehumidifier 10 and the pressure regulator 9, when energized to the pneumatic electromagnet; 1, the charge 7 passes into the pneumatic cylinder of the shut-off charging valve 4. The valve rises and hermetically closes the opening of the feed funnel 3. After closing valve 4, the compressed air passes through the gap b into the cavity of chamber I and creates in it an overpressure limited by safety valve 5. Simultaneously compressed ozduh through valve 7 reaches the discharge k.cha anu 15 of the mixing chamber 14 and opens the opening 17 flyusopro- water.

When the pressure in chamber 1 is equal to the pressure of the setting of the pressure relay 6, the supply voltage of the electromagnet of the valve 8 is turned on, when activated, the compressed air is supplied through adjustable throttle II to the nozzle 16. Under the pressure inside the chamber 1, the flux is displaced into the mixing chamber 14, where it is picked up by the compressed air leaving the nozzle 16 and supplied to the flux line 17.

To stop the supply of flux, turn off the power supply to the electromagnets of the pneumatic expansion valve 7 and the valve 8. At the same time, the supply of compressed air in the chamber 1 is stopped and the opening in the mixing chamber 14 is closed.

The compressed air remaining in chamber I through the check valve 13 and the quick exhaust valve 12 enters the nozzle 16 of the valve 15 and blows the flux line 17,

relieving him of the flux remaining in him.

The pneumatic feeder provides reliable flux supply, eliminates the need for additional purification of the flux line during operation, and allows using compressed air accumulated in the feeder chamber to flush the fluxing system, prevent the atmosphere from being contaminated with dusty air, and reduce unproductive compressed air consumption.

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Claims (1)

Invention Formula Pneumatic feeder for supplying flux during welding, containing a sealed chamber for flux with a safety valve that re-closes the loading valve, a mixing chamber with a discharge valve and nozzle, a fluxopropod and a pneumatic equipment for preparing and supplying air, characterized in that, in order to improve reliability , the pneumatic equipment is additionally equipped with a check valve and a quick exhaust valve, while the sealed chamber for the flux is connected to the flux line through a check valve, a quick exhaust valve and a nozzle with esitelnoy camera.