Slag dragging machine and chain guiding device thereof

Abstract

The invention discloses a slag dragging machine and a chain guiding device thereof. The chain guiding device comprises a guiding wheel (31), a central shaft (32), a rolling bearing (33), a first seal assembly (34) and a base (37), wherein, the guiding wheel (31) is fixedly connected with the central shaft (32); the rolling bearing (33) surrounds the central shaft (32); the first seal assembly (34) is arranged between the guiding wheel (31) and the rolling bearing (33); the base (37) surrounds the central shaft (32) and is arranged outside a slag dragging machine shell (36); the first seal assembly (34) is also arranged between the base (37) and the guiding wheel (31); a second seal assembly (35) is arranged between the base (37) and the central shaft (32); and the rolling bearing (33) is arranged outside the second seal assembly (35). The chain guiding device can realize on-line examination and repair, has better reliability, can effectively reduce the furnace stopping times, reduce the economic loss and improve the economic benefit of enterprises.

Description

technical field [0001] The invention relates to the field of cleaning and slag removal, in particular to a chain guide device for a slag puller. In addition, the present invention also relates to a slag removing machine comprising the above-mentioned chain guide device. Background technique [0002] The buried scraper type slag extractor is mainly used for cooling and removing the bottom slag of coal-fired boilers in thermal power plants, and at the same time realizes the water sealing of the boiler outlet. The slag scraper is driven by a chain, and there are four chain guides for guiding in the water tank (so the chain guide is also called a soaking wheel), and the working conditions are relatively harsh. There are usually two solutions for chain guides in existing slag extractors, one is a chain guide with a built-in bearing, and the other is a chain guide with an external bearing. [0003] Please refer to figure 1 , figure 1 It is a structural sectional view of a typi...

AI Technical Summary

Problems solved by technology

[0006] 1) Existing sealing rings for waterproofing usually use skeleton oil seals, which are not effective in preventing slag water, and slag water easily enters the bearing cavity, causing the bearing 13 to be ground and damaged, and the slag removal machine cannot operate normally;

[0007] 2) When replacing the bearing 13, the water inside the slag extractor must be drained, causing the boiler to shut down and causing major economic losses;

[0008] 3) It is impossible to observe whether the chain guide device is rotating normally. Often the chain guide device does not rotate, and dry friction with the chain will wear off most of the wheel body 14, which will also aggravate the wear of the chain.

[0012] 1) The sealing ring 24 still uses a skeleton oil seal, the waterproof effect is not good, and slag water easily enters the bearing cavity, causing the bearing 25 to be ground and damaged;

[0013] 2) During maintenance, it is still necessary to drain the water inside the slag extractor, causing the boiler to shut down and causing major economic losses;

[0014] 3) The cantilever of the shaft of the bearing external chain guide is longer than that of the bearing internal chain guide, and its reliability is poor

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