Medium-speed coal mill primary air chamber guide device

A guide device and coal mill technology, applied in the field of medium-speed coal mills, can solve problems such as wear of the non-working surface of the coal mill barrel wall, increased maintenance workload, internal flow field disorder, etc., to reduce the maintenance workload, Improve work efficiency and avoid flow field disturbance

Pending Publication Date: 2020-03-31
HARBIN BOSHEN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the phenomenon of uneven wind speed and air volume inside the primary air chamber, disordered internal flow field, and "turbulent flow" in the existing medium-speed coal mill under the working condition of long-term operation of pulverization. The coal mill barrel wall and the non-working surface of the coal mill roller in a single part of the coal mill have serious wear and tear, and the problem of increasing the maintenance workload, and a medium-speed coal mill primary air chamber guide device

Method used

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  • Medium-speed coal mill primary air chamber guide device
  • Medium-speed coal mill primary air chamber guide device
  • Medium-speed coal mill primary air chamber guide device

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specific Embodiment approach 1

[0030] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a medium-speed coal mill primary air chamber guide device described in this embodiment includes a sealing box 2, an adjustment handle 3 and a guide unit 4;

[0031] The primary air chamber 1 of the medium-speed coal mill is provided with a guide unit 4, one end of the adjustment handle 3 is connected to the guide unit 4, the sealing box 2 is a cuboid with one end open, and the side of the sealing box 2 is provided with a long through hole. The casing of the medium-speed coal mill is provided with a sealing box 2, and the sealing box 2 extends through the casing of the medium-speed coal mill into the primary air chamber 1, and the other end of the adjustment handle 3 passes through the medium-speed coal pulverizer once. The strip through hole on the shell and the sealing box 2;

[0032] In this specific embodiment, the medium-speed coal mill is one of the important equipment of the thermal...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the guide device for the primary air chamber described in the first specific embodiment. The guide device for the primary air chamber of a medium-speed coal mill described in this embodiment, the guide The unit 4 is set between the primary air chamber 1 of the medium-speed coal mill and the scraper device 5 of the medium-speed coal mill;

[0036] In this specific embodiment, the guide unit 4 is arranged between the primary air chamber 1 of the medium-speed coal mill and the scraper device 5 of the medium-speed coal mill. The internal air volume, wind direction and wind speed of the medium-speed coal mill primary air chamber are uniform, It can ensure the efficient operation of the air ring of the coal mill, reduce the unit consumption of the coal mill, and improve the working efficiency of the coal mill.

specific Embodiment approach 3

[0037] Specific implementation mode three: combination figure 2 Describe this embodiment. This embodiment is a further limitation of the guide device for the primary air chamber described in the second specific embodiment. In the guide device for the primary air chamber of a medium-speed coal mill described in this embodiment, the guide The unit 4 includes a baffle 4-1 and a rotating shaft 4-2, and the rotating shaft 4-2 is provided with a baffle 4-1 along the direction of the outer circumferential wall;

[0038] In this specific embodiment, the primary air chamber of the medium-speed coal mill is provided with a guide unit, one end of the adjustment handle is connected to the guide unit, and the other end of the adjustment handle passes through the shell of the medium-speed coal mill and the seal on the sealing box at one time. Long through holes, the staff can adjust the wind speed and wind direction in the primary air chamber by adjusting the handle, avoid the internal flo...

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Abstract

The invention discloses a medium-speed coal mill primary air chamber guide device, and relates to the medium-speed coal mill technology field. Problems that under a working condition that an existingmedium-speed coal mill produces powder during long-time operation, an air speed and an air volume in a primary air chamber are uneven, an internal flow field is disordered, and a ''turbulent flow'' occurs; and then non-working surfaces of a coal mill cylinder wall and a coal mill grinding roller at a certain single local position in a coal mill are seriously abraded, and an overhaul workload is increased are solved. A guide unit is arranged in the primary air chamber of the medium-speed coal mill. One end of an adjusting handle is connected with the guide unit. A sealing box is in a cuboid shape with an open end, a long-strip-shaped through hole is arranged in a side surface of the sealing box, the sealing box is arranged on a shell of the medium-speed coal mill, the sealing box penetratesthrough the shell of the medium-speed coal mill and stretches into the primary air chamber, and the other end of the adjusting handle penetrates through the shell of the medium-speed coal mill and the long-strip-shaped through hole in the sealing box. The device is suitable for adjusting an air direction and the air speed in the primary air chamber of the medium-speed coal mill.

Description

technical field [0001] The invention relates to the technical field of medium-speed coal pulverizers, in particular to a guide device for a primary air chamber of a medium-speed coal pulverizer. Background technique [0002] Under the working conditions of long-term operation of pulverization in the existing medium-speed coal mill, the phenomenon of uneven wind speed and air volume inside the primary air chamber, disordered internal flow field, and "turbulent flow" will occur, and then the coal mill will appear The wall of the coal mill barrel and the non-working surface of the coal mill roller in a single part of the interior are severely worn. The main reason is that after the primary air enters the primary air chamber of the coal mill, it will diverge and flow in an uneven direction, and converge at a certain point. When the pulverized coal is carried by a large wind speed, it will cause the primary wind to converge at the local outlet of the upper air ring of the medium...

Claims

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Application Information

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IPC IPC(8): B02C23/26
CPCB02C23/26
Inventor 牛海峰邓大鹏单玉华何文娣王声达
Owner HARBIN BOSHEN TECH DEV CO LTD
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