Movable sealing connection device of rotary furnace

Abstract

The invention discloses a movable sealing connection device of a rotary furnace. A copper sleeve is sleeved on a rotary barrel body and fixedly connected with a water cooling bearing seat through a perforation bolt, a press cover is fixed on the water cooling bearing seat through a bolt, an inner labyrinth ring inner hole is connected with the rotary barrel body in a clearance fit mode, oil immersed asbestos filler is filled between the inner side of the labyrinth cover inner ring and the outer side of the inner labyrinth ring inner ring, and the sealing press cover covers the filler tightly. High temperature resistant grease is injected in a gap between the water cooling bearing seat and the inner labyrinth ring and the labyrinth cover through an oil cup. A sealing cover is fixedly connected with the labyrinth cover through a bolt, and the sealing cover is arranged on a frame. The connection device adopts the modes of labyrinth sealing and grease filling to conduct sealing conveniently, is simple in structure, cannot abrade parts and ensures a lubricating effect due to the fact that the grease sealing can be conducted by simply filling the grease continuously and a sealing effect cannot become poor in the use process.

Description

technical field [0001] The invention relates to a sealing device, which is suitable for the rotary joint of the connecting pipe of the rotary furnace, in particular to a dynamic sealing connection device of the rotary furnace. Background technique [0002] During the use of the reduction furnace, ammonia or hydrogen is often filled to ensure the reducing atmosphere in the furnace. If the seal is not good, the leakage of ammonia gas will have an impact on the environment, and the leakage of hydrogen gas may cause an explosion. And if there is air entering the furnace, it will destroy the reducing atmosphere in the furnace and cause the product to be scrapped. Moreover, the rotary kiln must be heated to 700°C when it works, and the temperature at the inlet and outlet ends of the rotary kiln has reached about 130°C, which makes it difficult to seal. [0003] Traditionally, graphite ring cone sealing structure is used. There are also the following existing patents: [0004]...

AI Technical Summary

Problems solved by technology

This method is still a contact seal, and the sealing effect will become worse with use

[0007] The existing technology adopts the contact seal, the structure is complicated and the installation is inconvenient

Rely on the frictional contact of the sealing parts for sealing, which is easy to cause wear of the parts and make the sealing effect worse

At this time, it must be shut down for inspection and replacement of parts

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