Solid material comminution or disintegration – Apparatus – Loose grinding body comminutor
Patent
1989-04-20
1990-09-11
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Loose grinding body comminutor
B02C 1708
Patent
active
049555510
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to size reducing machinery coping with mechanical and chemical processing of materials and has specific reference to intermittent epicyclic mills.
BACKGROUND OF THE INVENTION
Known in the art is an intermittent epicyclic mill (SU, A, 117,671) incorporating a housing with a cover, barrels with lids and loads of pebbles which are linked to planet wheels of a planetary gear, and a drive, whereby each barrel is fitted to a mount--which is fixed to a planet wheel--and is provided with an overhanging clamp comprising an eccentric and a pushrod interacting with the barrel lid. The pushrod can consist of two lengths connected by a spring.
The barrel lids are opened and closed by the hand-operated eccentrics, and the opening and closing of the housing cover is a manual job as well. Therefore, the attending personnel is exposed to the harmful effect of the toxic stock processed and may suffer from poisoning and occupational diseases, putting them on the sick list.
Also known is an intermittent epicyclic mill (SU, A, 961,760) incorporating a baseplate-supported housing with a cover contained wherein are barrels revolving about their own axes and the axis of the mill. The barrels rest on a carrier, are provided with lids and contain each a load of pebbles. The carrier is electrically driven.
The fasteners of the barrel lids and housing cover are done and undone by hand. Therefore, when toxic stock containing, e.g., mercury, fluorine, barium, etc. being processed, the personnel is exposed to its hazardous effect with grave consequences for their health.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide an epicyclic mill which can be operated unattended in an isolated space and process materials, predominantly of toxic character, at a high rate.
This object is realized by disclosing an intermittent epicyclic mill incorporating a housing with a cover which is supported by a baseplate and located wherein are barrels--closed by lids and containing each a load of pebbles--resting on an electrically-driven carrier and revolving both about their own axes and an axis of the mill whereby according to the invention a rigid mount is immovably located in the housing in a coaxial position with the carrier so as to form a clearance with the housing and restrict the barrels which are pressed against the rigid mount by load-bearing element fitted to the carrier; a revolving jib crane is secured to the baseplate; a ram is suspended from the jib crane in a coaxial position with the mill, whereby the piston rod of the ram is rigidly attached to the cover of the housing; a spindle is rigidly fastened to the inside of the cover of the housing so as to give support to two discs installed in bearings one above the other, whereby the lower disc is fitted with provision for revolving integrally with the lids of the barrels and the upper disc--installed with provision for an axial displacement with respect to the lower disc--has spring-loaded pins passing through holes in the lower disc so as to come abutting against the top end faces of the barrels; and rams are fitted to the cover of the housing with provision for interacting with the upper disc when the cover of the housing is being lifted by the ram of the revolving jib crane.
The clearance, the mount fits into the housing with, provides for uniform thermal expansion of the mount in the radial direction and prevents its cocking which may induce heavy vibration shortening the service life of the mill. The rigid mount serves as a friction surface owing whereto the centrifugal forces of the masses of the barrels can be utilized in order to induce the rotation of the barrels about their own axes. The load-bearing elements fitted to the carrier press the barrels against the rigid mount in operation, preventing thereby the possibility of radial oscillations of the barrels and extending the service life of the friction surfaces of both the rigid mount and the barrels. The ram of the revolving jib crane which is loca
LandOfFree
Intermittent epicyclic mill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intermittent epicyclic mill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermittent epicyclic mill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1179185