Title:
GYRATORY CRUSHER
Document Type and Number:
Japanese Patent JP2021159824
Kind Code:
A
Abstract:
To suppress the entry of dust adhered to a lower end inner peripheral surface 2b of an upper frame 2 into a cylinder (upper frame 2) of the annular double acting hydraulic cylinder 22.SOLUTION: A hydraulic cylinder formed between a machine body frame 1 and a bowl 21 elevates a bowl 21, and a bowl liner 10 is oppositely attached to the mantle 9 eccentrically attached to a rotary shaft 4. By rotations of the rotary shaft, the mantle is swiveled and rotated to crush an article to be crushed P fed in between the mantle and the bowl liner there. A ground packing 27 and a dust scraper 28 are provided on a lower side of the hydraulic cylinder, and a dust seal ring 29 is further provided on the outside of packings 24 and 25 of upper and lower hydraulic chambers 22a and 22b. Dust on an inner peripheral surface of a lower end of the upper frame is scraped off by a dust scraper, and is prevented by the grand packing and the dust seal ring from entering the hydraulic cylinder. Therefore, a risk that a working fluid of the hydraulic cylinder being contaminated with dust is extremely low and the damage of a hydraulic apparatus and components thereof unlikely occurs.SELECTED DRAWING: Figure 4
More Like This:
| WO/2009/123531 | ATTENUATION OF PRESSURE VARIATIONS IN CRUSHERS |
Inventors:
SASAKI SATOSHI
Application Number:
JP2020062049A
Publication Date:
October 11, 2021
Filing Date:
March 31, 2020
Export Citation:
Assignee:
KURIMOTO LTD
International Classes:
B02C2/04
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani
Takayoshi Tagawa
Takashi Shimizu
Masanori Akatsuka
Bunji Kamada
Yaichiro Nakatani
Takayoshi Tagawa
Takashi Shimizu
Masanori Akatsuka