Solid material comminution or disintegration – Apparatus – Rotating comminuting surface
Patent
1990-02-16
1991-06-11
Eley, Timothy V.
Solid material comminution or disintegration
Apparatus
Rotating comminuting surface
241292, 2412921, B02C 1816
Patent
active
050225944
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to meat and meat products grinding arrangements, and more precisely to mincer knife heads.
PRIOR ART
The higher demands made on the meat and food industries, specifically the need to expand the range of meat products, have given rise to more stringent requirements placed upon the design of mincers, particularly on their knife heads.
Known in the art is a mincer knife head (cf., V. I. Ivanov et al. "New Cutting Devices for Mincers". A Review. "Mincer Knife and Knife Heads", p. 18. Moscow, 1986), comprising a shaft carrying, consecutively arranged thereon, a support bushing, a group of main bushings, each mechanically associated with at least one knife and carrying at least one balancing disk, and a fixing member. A minimum of three holes, equidistant from each other, are provided on the periphery of each balancing disk incoporated in said knife head, and the latter additionally contains groups of pins with the number thereof equal to that of the balancing disks, the number of pins in each group being inferior to the number of the holes in the appropriate balancing disk.
However, the pins allow only discrete balancing of said knife head to be performed, which affects balancing accuracy.
Moreover, the indispensable displacement of the pins in the holes of the balancing disks results in quick destruction thereof, which is conducive to a shorter service life of the knife head.
Furthermore, the presence of pins in said knife head involves a higher metal consumption.
Also, the constant radius of the knife rotation about the axis of the shaft does not allow the knife overhang to be adjusted, which affects operational reliability of the knife head.
DISCLOSURE OF THE INVENTION
The invention is aimed at providing a mincer knife head whose balancing disks would permit continuous balancing, their shape would make it possible to extend their service life and cut down metal consumption, and rotation of the knives would allow adjustment of the overhang.
This is accomplished by that in a mincer knife head comprising a shaft carrying, consecutively arranged thereon, a support bushing, a group of main bushings, each mechanically associated with at least one knife and carrying at least one balancing disk, and a fixing member, according to the invention, the balancing disks are made in the form of eccentries.
It is expedient that in a mincer knife head with a plurality of balancing disks the latter have different thickness and eccentricity.
It is desirable that each main bushing be made in the form of an eccentric.
It is reasonable that each main bushing in a mincer knife head with two knives be two-stepped, with the eccentricities of the steps facing opposite directions, and each carrying an appropriate knife.
It is also expedient that a mincer knife head include additional bushings with the number thereof equal to that of the main bushings, made in the form of eccentrics, fitted on the shaft before each appropriate main bushing, and each carrying an appropriate knife.
It is also desirable that in said knife head external surfaces of the main bushings and internal surfaces of the knives and the balancing disks have teeth with the identical module thereof and a reference point.
It is also reasonable that in a mincer knife head external surfaces of the additional bushings and the internal surfaces of the knives have teeth with the identical module thereof and a reference point.
The present invention permits continuous balancing, which adds to the accuracy of balancing the mincer knife head.
Besides, the present invention makes it possible to extend the service life of the balancing disks and, consequently, that of the mincer knife head.
Furthermore, the present invention permits of cutting down the consumption of metal for the balancing disks and, accordingly, for the mincer knife head.
Also, the present invention enables the knives to revolve with a variable rotation radius, which allows the overhang of the knives to be adjusted and, accordingly, operational reliability of t
REFERENCES:
patent: 4294415 (1981-10-01), Wetter et al.
patent: 4407458 (1983-10-01), Hotimsky
patent: 4770353 (1988-09-01), Steffens
Fedorov Eduard L.
Gordon Anatoly M.
Grachev Anatoly F.
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