Title:
竪型粉砕機
Document Type and Number:
Japanese Patent JP5854902
Kind Code:
B2
Abstract:
Provided is a vertical-type mill whereby abrasion of a hopper and accumulation of coarse particles in the hopper can both be prevented. A vertical-type mill provided with a milling mechanism for milling a material to be milled and obtaining solid particles by meshing of a milling roller or milling ball and a milling table, a classification mechanism having a classifier for classifying milled solid particles and a hopper (11) for collecting coarse particles that are classified by the classifier and dropped downward and leading the coarse particles toward the milling mechanism, a raw material feeding pipe (1) for charging the material to be milled into the milling table, and housings (43a, b), wherein the raw material feeding pipe is provided in the hopper so that the relationship 0.15≰L′/L≰0.5 is satisfied, where, using the boundary line between a cylindrical part of the hopper and an inverted conical part of the hopper as a reference position, L is the distance from the reference position to the top end of the hopper, and L′ is the distance from the reference position to the bottom end (1a) of the raw material feeding pipe.
Inventors:
Takashi Aizawa
Takehiro Aoyama
Fumaya Hamanaka
Takehiro Aoyama
Fumaya Hamanaka
Application Number:
JP2012063744A
Publication Date:
February 09, 2016
Filing Date:
March 21, 2012
Export Citation:
Assignee:
Mitsubishi Hitachi Power Systems Co., Ltd.
International Classes:
B02C15/04; B02C23/02
Domestic Patent References:
| JP58180242A |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office