Non-flexible compensator for wind box branch pipe of sintering machine

Abstract

The invention provides a non-flexible compensator for a wind box branch pipe of a sintering machine. The non-flexible compensator comprises a horizontal sliding device and a plumb extendable device, wherein the horizontal sliding device comprises a base and a sliding ring, the base is a round metal pipe, the lower end of the base is connected with a straight pipe of the wind box branch pipe of the sintering machine, the sliding ring is a circular metal plate and covers the upper end surface of the base, the circle center of the sliding ring is located on the central axis of the base, and the plane of the sliding ring is perpendicular to the central axis of the base; the inner diameter of the sliding ring is smaller than that of the base, and the outer diameter of the sliding ring is larger than that of the base; the plumb extendable device comprises a descending pipe, the upper end of the descending pipe is connected with a bent pipe of the wind box branch pipe of the sintering machine, the lower end of the descending pipe is inserted into an inner hole of the sliding ring and the base, and the descending pipe is in clearance fit with the inner hole of the sliding ring. The heat expansion of the wind box branch pipe of the sintering machine can be compensated well in any direction of a space under the combined action of the horizontal sliding device and the plump extendable device; the non-flexible compensator is long in service life, low in manufacturing cost and convenient to maintain and repair and meets production requirements, and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to a non-flexible compensator for branch pipes of a bellows of a sintering machine, which belongs to the technical field of sintering equipment. Background technique [0002] The bellows branch pipe of the sintering machine is the connecting pipe between the bellows of the sintering machine and the large flue. The bellows branch pipe is composed of two parts, an elbow and a straight pipe. The elbow and the straight pipe are connected by a compensator. One end of the compensator is connected to the elbow of the bellows branch pipe, and the other end is connected to the straight pipe of the bellows branch pipe. In sintering production, due to the large temperature change of the working environment (temperature range of 20~350°C), and the sintering machine bellows and large flue are fixed structures, the thermal expansion of the sintering machine exhaust system can only be installed on the bellows branch pipe The compensator is rele...

AI Technical Summary

Problems solved by technology

The currently used compensators include flexible metal bellows type compensator and flexible fluororubber compensator. The thermal expansion of the sintering machine is the displacement change in any direction in space, and the thermal expansion changes with the change of ambient temperature; the flexible metal bellows type compensation The metal bellows of the device are subjected to alternating stress, fatigue and tearing, which greatly shortens the life of the flexible metal compensator and makes it difficult to meet the production requirements; the flexible fluororubber compensator works in a high temperature environment for a long time, resulting in accelerated aging of fluororubber, and It is difficult to repair the fluorine rubber damaged online, and the compensator needs to be replaced after the damage, which seriously restricts the production and operation and increases the workload of daily equipment maintenance

Regardless of the flexible metal bellows type compensator or the flexible fluororubber type compensator, the compensation amount is determined by the length of the flexible device (metal bellows and fluororubber) and its own shrinkage performance. The size of the compensator in the production environment is affected by the site. Due to the limitation of the installation site, the flexible device of the flexible compensator cannot be made too long, so that the compensation amount of the flexible compensator cannot meet the requirements of large thermal expansion.

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