Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1996-05-02
1997-08-26
Husar, John M.
Solid material comminution or disintegration
Apparatus
With automatic control
241264, B02C 102
Patent
active
056603371
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present innovation is an evolution of the patent entitled "Frantumatore alternativo", (reciprocating crusher) filed on 19th Dec. 1990 at the Provincial Office of Industry, Commerce and Artisanship of Venice with number IT-A-61977 B/90 and concerns a new crushing machine with mouth opening adjustable jaws to allow exit of different sizes of the material, by means of the control of the distance between the fixed and mobile jaws, and with a safety device against uncrushable material blocks that may accidentally enter into the crushing chamber.
BACKGROUND ART
The crushing machines with traditional jaws exploit the principle of the breaking of the material that is being compressed between two jaws, of which one is fixed and the other mobile, the mobile jaw being operated by an eccentric power-operated shaft that acts on the upper side and by an articulation of a connecting rod that acts on the lower side, in the crusher called "a simple toggle", or the hinged mobile jaw being linked to the frame in the upper part and operated by an eccentric power-operated shaft through a double articulation connecting rod, in the crusher called a "double toggle". As is known, the traditional crushing machines have a correction system for the size of the material in exit which is awkward to use, being composed of a series of thicknesses inserted or removed between the connecting rod and the casing when the machine is standstill, with consequent laboriousness and known that in such machines the use of the safety device against blocks of uncrushable material is remarkably unsuitable and wasteful, this device being composed of the well known connecting rod or other breakable component that permits the mobile jaw to space itself from the fixed one beyond the correction/value, in order to eliminate the uncrushable material without giving rise to further and more serious damages to the machine. Since the security system is based on the breaking of a component, the relative reset involves an non-functional machine for many hours, for the replacement of the component and a notable cost for the material and labour.
U.S. Pat. No. 3,099,406 (H. A. P. KAUTZ) discloses an Ore Crusher having two opposed reciprocating jaws (10-21). The jaws being hinged upwards in the entry mouth and the reciprocation being operated backwards in their exit mouth; in which there is a release cylinder (C-3) to allow accidental enlargement.
This solution does not allow adjusting the exit mouth opening, but only safety against overpressure of a larger block not crushed. Furthermore oscillation being on their basis, does not supply an efficient and progressive crushing.
EP-A-0433500 (J. ALTIMAYER) discloses as the previously described IT-A-61977 B/90, a Rock crusher using a fixed jaw (1) and a reciprocable Jaw (16), said reciprocable jaw being eccentrically reciprocated in its upwards eccentric hinging (in the entry mouth). The reciprocable jaw having downwards and on its back a safety cylinder (double acting hydraulic ram 50) to allow opening of the exit mouth when excess of crushing pressure happens in the exit mouth.
In this solution the security cylinder (50) has a strongly limited allowable excursion because of the rigid connection ends of the cylinder (56-54).
In this solution spring clearance recovering device is provided (30-36).
GB-A-648443 (K. GAULDIE) discloses a two opposed Jaw crusher, having a fixed jaw and an hydraulically operated reciprocable jaw (12).
The hydraulic reciprocation being made by a cylinder (14) having both functions of reciprocation and of overpressure yielding.
The connection being made by simply pushing stem head in sliding contact with a vertical back surface on the basis (exit mouth opening) of the reciprocable jaw. Said mobile jaw being free hinged in upper side entry mouth opening.
This solution having a recovery clearance device (18-17a) as the previous one.
DE-B-1164211 (MASCHINENFABROK KOOPPEREN & Co. K. G.) discloses crusher structured as the previous one.
U.S. Pat. No. 4,749,132 (T. HAGIWARA) discl
REFERENCES:
patent: 2982481 (1961-05-01), Osborne et al.
patent: 3099406 (1963-07-01), Kautz
patent: 3959897 (1976-06-01), May
patent: 4398674 (1983-08-01), Dremann
patent: 4406416 (1983-09-01), Tateishi
patent: 4410145 (1983-10-01), Koch
patent: 4637562 (1987-01-01), Hagiwara et al.
patent: 4749132 (1988-06-01), Hagiwara et al.
patent: 4765546 (1988-08-01), Stewart
Carlesso Franco
Falbo Dario
Bloom Leonard
Husar John M.
Officine Meccaniche Di Ponzano Veneto S.P.A.
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