SU958065A2 - Apparatus for suction gases off moving working member - Google Patents

Description

one ,

The invention relates to the welding and reke of metals, namely to the structures of devices intended to remove harmful gases from a moving welding unit.

According to the main author. St. No. 626919, a device for suction of gases from a moving working body, such as a welding arc, contains a JQ gas outlet box with a lid in the form of a flexible tape and a suction nozzle made in the form of a longitudinal movement in the box,

rotatably mounted on the drum l.

However, this device is characterized by an insufficiently effective suction of gases through a hole in the drum, which 20 requires additional power of the gas suction unit.

The aim of the invention is to increase the efficiency of the suction of gases.

To achieve this goal, in a device for suction of gases from a moving body of a working body, for example, a welding rod, containing a gas outlet duct with a lid in the form of a flexible tape and a suction nozzle in a box that can be longitudinally displaced in the form of a drum with an outer holder, mounted rotatably with respect to the Araban, the holder is provided with through windows dll sucking sllak and gases through them.

FIG. 1 shows schematically an estimated device for suction of gases, a section; in fig. 2 shows section A-A in FIG. one; in fig. 3 — node 1 in FIG. 2; The arrows indicate the direction of movement of the nozzle and the flow of exhaust gases).

Claims (2)

The device for suction of gases comprises a gas exhaust duct 1 with a flexible strip in the form of a flexible tape 2 with ends fixed on the duct and tensioned with. tensioning device 3. In the box 1 there is arranged with the possibility of longitudinal movement a branch pipe, made in the form of a drum 4, on which, on the balls 5, there is mounted a sleeve consisting of parts 6 and 7 with through holes 8 for suction through them gases. The width of the clip corresponds to the width of the drum. The drum axis is lowered into the duct 1 in order to increase the reliability of the seal, and its gas phase, including the discharge nozzles 9, protrudes above the duct. On the gaseous part 10, a bracket 11c is mounted with pressure rollers 12, which contact the holder through flexible penta 2. Guides 13 are mounted on the box, and rollers 14 are supported on it. convenience of cleaning the box 1 from the solid fractions installed a special tray The device works as follows. The air from the duct is aspirated out of the box 1. Blur of the burning gas from the welding arc together i; The air is sucked into the system and through the connecting pipe 9 into the drum 4, and from it through the through windows 8, made in the holder 6, 7, get into the orob 1, and then into the ventilation system. When moving the welding device, the connecting pipes 9 connected to it with the drum 4 move as well. The latter, moving on the rollers 14 between the seal 16, lifts the flexible band with its holder 2. The yoke rotates around the drum 4 to facilitate the smooth movement of the drum. Through holes, made in the cage of suction of slag and gases through them, contribute to a more efficient suction of gases without additional power of the ventilation system, and consequently, reduce operating costs. The invention of the device for the suction of gases from a moving body on avtom, St. No. 626919, characterized in that, in order to increase the efficiency of gas suction, the yoke is provided with through windows for suction of slag and gases through them. Sources of information taken into account during the examination 1. USSR author's certificate No. 626919, cl. B 23 K 37 / OO, O9.O3.77 (prototype). f