SU980998A1 - Apparatus for electric-arc melting of concrete - Google Patents

Description

one

The invention relates to devices for the treatment of conductive materials, for example, for electric arc melting of concrete 1FI, its cutting and the formation of an aperture.

A device for electric arc melting of concrete is known, which includes two non-melted electrodes with current leads that are permanently mounted on non-working ends of electrodes, and a feed mechanism | 0 electrodes 1}.

The drawbacks of the device are the unstable re-excitation of the electric arc by passing the current curve through zero, as well as large power losses in the contacts between the electrode holders and the current lead busbars, due to the need to move massive copper cables along the electrodes . 20

Closest to the invention is a device for arc treatment of concrete, comprising a housing, electrodes, one of which is hollow, in a cavity

placed metal-containing 1fnsadka in the form of 1FOVOLOKI, sliding current leads to them, springs, Y) pressing joints to the current leads and a pusher for supplying C 2 electrodes.

However, the parallel arrangement of the electrodes does not allow for the initial excitation of the electric arc and to guarantee the absence of the electric arc by the adjacent sections of the electrodes during the melting process, which leads to an effective energy consumption.

The purpose of the invention is to reduce ev consumption.

This goal is achieved by the fact that in a device for arc melting of concrete, including a housing, electrodes with current leads and shuzhuzhins, a pusher, for supplying electrodes, the housing is flattened with electrophoresis for electrodes, and the current leads to them are fixed

: SCHARN1FNO.

FIG. 1 shows a device for the electric heating of concrete smelting, side view {

in fig. 2 is the same, top view :, in FIG. 3 is a section A-A in FIG. 2

The device for electric arc smelting of concrete consists of non-emitting electrodes 1, sliding TOKODODvodov 2, UftK mounted on hinges 3, human 4, pusher for supplying electric 5, housing 6. Kqpnyce provides for a slotted 7 electrosholes.

The melting of the non-conductive material, the concrete nffimer, is carried out as follows.

Non-melting electrodes are brought close to the races along the tensioning edges (the melting material and between them the electric arc is injected. When the distance between the ends of the electrodes and the bottom of the melted hole reaches 5-10 mm during the melting process - material to be melted at a speed of 2O-5O mm / min.

The guide slots ensure a constant distance between the working ends of the electrodes and, therefore, the stability of the melting process.

The hinged mounting of the current leads allows the cold ends of the electrodes to move along rails.

Due to the constant distance between the working ends of the electrodes, the initial excitation of the electric arc and the absence of shunting during operation are ensured, which makes it possible to make better use of the power supplied to the arc and to avoid non-productive labor costs.

Claims (2)

1.Avtsky certificate of the USSR Ms 171338, cl / B 28 D 1 / OO, 1962. 2. USSR author's certificate No. 6794О4, class, B 28 O 1 / OO, 1979 I phototype). 5