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Adjusting type upper sealing device for coal mill base

A technology of sealing device and coal mill, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of unmixed wind sealing, etc., and achieve the effect of ensuring effectiveness, preventing wear and ensuring sealing effect

Pending Publication Date: 2021-12-14
HUANENG GANSU XIGU THERMAL POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual situation at the beginning of the installation of the coal mill is that the upper sealing surface is lower than the lower sealing surface of the transmission disc, so the gap value cannot be discussed, so that the sealing air cannot effectively seal the mixed air, and the mixed air carries pebbles and coal through the gap. Into the sealed air chamber, and leak into the environment after being sealed and sealed by the machine base

Method used

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  • Adjusting type upper sealing device for coal mill base
  • Adjusting type upper sealing device for coal mill base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An adjustable upper sealing device for a coal mill base, which consists of: a frame 8 and a transmission disc 1, the frame is connected to the transmission shaft of the transmission disc through a bearing, and the frame is fixed There is an inner air seal fixing ring 3, the inner air seal fixing ring is covered with an inner air seal adjusting ring 4, the inner air seal fixing ring and the inner air seal adjusting ring are fixed by fixing bolts 5, the A support ring 6 is fixed on the outer ring surface of the inner air seal fixing ring, and a plurality of adjustment bolts 7 are threadedly connected to the support ring, and the tops of the adjustment bolts are pushed against the inner air seal adjustment ring. bottom.

Embodiment 2

[0017] According to the coal mill base adjustment type upper sealing device described in Embodiment 1, a scraper device is fixed on the bottom of the transmission disc, and the bottom of the scraper device faces the frame.

Embodiment 3

[0019] According to the coal mill base adjustment type upper sealing device described in embodiment 1 or 2, a plurality of strip-shaped stepped holes 9 are opened on the outer ring surface of the inner air seal adjustment ring, and the inner air seal is fixed The fixing stud on the outer ring surface of the ring passes through the strip-shaped stepped hole and is threadedly connected with the nut.

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PUM

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Abstract

The invention discloses an adjusting type upper sealing device for a coal mill base. After a coal mill is installed, an upper sealing face is lower than a lower sealing face of a transmission disc, so that sealing air cannot effectively seal mixed air, and the mixed air carrying pebble coal leaks into a sealing air chamber through a gap and leaks into the environment through a lower sealing face of a machine base. The device comprises a machine frame (8) and the transmission disc (1), the machine frame is connected with a transmission shaft of the transmission disc through a bearing, an inner air seal fixing ring (3) is fixed to the machine frame, an inner air seal adjusting ring (4) is arranged outside the inner air seal fixing ring in a sleeving manner, the inner air seal fixing ring and the inner air seal adjusting ring are fixed through a fixing bolt (5), a supporting ring (6) is fixed to an outer ring face of the inner air seal fixing ring, a plurality of adjusting bolts (7) are connected to the supporting ring in a threaded mode, and the tops of the adjusting bolts abut against the bottom of the inner air seal adjusting ring. The adjusting type upper sealing device is used for the coal mill base.

Description

technical field [0001] The invention relates to an adjustable upper sealing device for a coal mill base. Background technique [0002] The upper seal of the coal mill frame seal was originally designed as an axial seal, mainly because the upper sealing surface is 30mm higher than the lower sealing surface of the transmission disc, and the gap between the two is 1.5±0.5mm to cooperate with the gap for sealing. However, the actual situation at the beginning of the installation of the coal mill is that the upper sealing surface is lower than the lower sealing surface of the transmission disc, so the gap value cannot be discussed, so that the sealing air cannot effectively seal the mixed air, and the mixed air carries pebbles and coal through the gap. Into the airtight air chamber, and leak into the environment through the seal of the machine base. Contents of the invention [0003] The object of the present invention is to provide an adjustable upper sealing device for a coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/40B02C23/00
CPCF16J15/40B02C23/00
Inventor 张鹏博魏来袁斌彬成红兵李莹宋德安牛犇
Owner HUANENG GANSU XIGU THERMAL POWER CO LTD