Modified journal assembly for pulverizer

Patent metadata

Field	Value
Publication number	US-10799874-B2
Application number	US-201615160701-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	May 27, 2015
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

The present disclosure relates to a pulverizer includes a pulverizer housing with an grinding assembly having a grinding table situated therein. The grinding table provides a grinding surface area for a material, such as a fossil fuel, such as coal, to be pulverized. The grinding table is mounted on a gearbox shaft operatively connected to a gearbox drive mechanism so as to be capable of driven rotation within the pulverizer housing. A journal assembly having a journal head and the journal assembly and a spring assembly are mounted on the pulverizer housing so that the journal head engage the spring assembly.

First claim

We claim:

1. A pulverizer for pulverizing a fuel, comprising:
a grinding assembly including a grinding table which provides a grinding surface area;
at least one journal assembly including a journal head having a first end connected to a journal shaft that rotatably supports a least one grinding roll, the journal assembly configured to transmit a force through the journal head and the journal shaft to the at least one grinding roll which rotates on the grinding surface area due to rotational force provided by the grinding table, the journal head is pivotally mounted on a pair of pivot shafts to pivot the at least one journal assembly towards the grinding surface area; and
at least one spring assembly including a spring in a spring housing, the at least one spring assembly arranged to engage the journal head at a second end of the journal head distal from the first end to provide support and a force via the spring for the pulverization of the fuel to the journal assembly through the journal head.

2. The pulverizer as claimed in claim 1 , wherein in the pair of pivot shaft connect the at least one journal assembly to a pulverizer housing.

3. The pulverizer as claimed in claim 1 , wherein at least one bearing provides rigidity and support to the rotation of the at least one grinding roll in the at least one journal assembly.

4. The pulverizer as claimed in claim 3 , wherein a single housing is provided to accommodate the at least one bearing in the at least one journal assembly.

5. The pulverizer as claimed in claim 4 , wherein the single housing is made from casting or forging in the at least one journal assembly.

6. The pulverizer as claimed in claim 3 , wherein the at least one journal assembly employs a single end play for the at least one bearing.

7. The pulverizer as claimed in claim 1 , wherein the at least one journal assembly is sized for retrofit in the pulverizer.

Assignees

• General Electric Technology Gmbh

Inventors

• Indraganti Satya Sai Ramchandra Rao
• Aditya Krishnendu
• Chauhan Sunil
• Kendhe Mahesh Govind

Classifications

• B02C15/004

  Shape or construction of rollers or balls · CPC title

• B02C15/04 Primary

  Mills with pressed pendularly-mounted rollers, e.g. spring pressed · CPC title

• B02C15/045

  pressed against the interior of a ring rotating in a vertical plane · CPC title