SU1236261A1 - Device for removing detrimental substances generated in case of welding and cutting - Google Patents

Description

The invention relates to a technique of ventilation, in particular, to devices for suction and gases in electric arc welding inside vessels rotating during the welding process.

The purpose of the invention is to increase the work efficiency when welding the inner surfaces of hollow rotating articles.

Fig. 1 shows the device in a position with a minimum distance from the welding arc to the place of mounting of the device on the product with a cross-section of a constant and variable radius, for example, Tina ellipse, general view; PA of Fig. 2 is a section A-A in Fig. 1 (the arrow shows the direction of rotation of the product); Fig. 3 shows a device in a position with a maximum distance from the welding arc to the point of attachment of the device (since the telescope is extended); Fig. 4 shows a device with a device equipped with additional spacers for fastening inside the product.

The device contains a gas / gas receiver 1 ,, duct 2, a flexible hose 3 connected together with an exhaust pipe 5 (not shown), and a fixture 4 attached to a welded article 5 made in a permanent magnet corner 6 7

The dust receiver 1 is provided with a fixed 1p 1m with a copier 8 on it, resting on the surface of the product 5. The air duct 2 is made telescopic, one of the links of which is sharply connected with the pillar 6.

The tool 4 is also provided with spacers 9.

The fixture 4 may have an axis 10 for swiveling the duct 2 with the stand 6.

The device works as follows. After mounting the product 5 on the rollers, the welder inside the product 5, having a cross section of a constant or variable radius (for example, an ellipse), strengthens the device when using a permanent magnet 7 approximately on the axis of rotation of the product 5, while the flexible sleeve 3 and the current lead to the electrode holder (not shown) is routed through the hole in the product. Then turns on the rotation drive (not

but not shown) of product 5 and starts welding in the lower position. When the mover is turned on (not shown), the suction of harmful substances released during the welding process and their removal through the dust and gas receiver 1, the telescopic duct 2, the flexible hose 3 and further through the booster and the filter (not shown) are released. When the product 5 rotates, the gas bucket 1 maintains a constant position near the welding point due to the copier 8 resting on the surface of the product 5 and the hinged (axis 10 and pillar 6) connection of the duct 2 with the device 4 for fastening the device to the product 5.

When welding a swivel joint inside the product (i.e., at some distance from the bottom), the device is attached using spacers 9 of fixture 4.

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Claims (2)

1. DEVICE FOR REMOVING HAZARDS FORMED BY WELDING AND CUTTING, containing a dust collector, an air duct, a flexible sleeve in communication with an exhaust pipe, and a device for attaching to a welded product made in the form of a rack with a permanent magnet, the air duct being rigidly connected to one end with a dust and the other with a flexible sleeve, characterized in that, in order to increase work efficiency when welding the inner surfaces of hollow rotating products, the dust and gas receiver is equipped with a copier mounted on it Ohm, resting on the surface of the product, and the duct is made telescopic, one of the links of which is pivotally connected to the stand. 2. The device according to claim 1, characterized in that the device for fastening to the welded product is equipped with spacers. to OO to