1988-07-25
1990-12-04
Hornsby, Harvey C.
Presses
Combined
100117, 100127, 100145, 100150, B30B 912
Patent
active
049745069
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is directed to a spindle press. More particularly, the present invention relates to a vertically arranged spindle press for pressing put fluid from a material, for example sugar beet pulp, which has a housing with an upper part including a spray casing and a screen casing forming an annular space for guiding away pressed out fluid therebetween, and also a lower part; a press spindle rotatably supported in the housing by upper and lower bearings, dewatering means connected with the annular space between the casings and with the interior of the hollow press spindle, filling means for feeding the material to be pressed into the upper part, and a drive which includes drive means and a drive pipe rotatable by the drive means and rotating the spindle.
In a known spindle press of this type (DE-OS No. 26 41 597), which is constructed as a beet pulp press, the drive pipe 6 is constructed as one piece and has a disadvantageously large length, since the lower part 10, 13 has a disadvantageously large overall height. An upper bearing of the spindle body 1 is not disclosed. The lower bearing 8 is located very low below the spindle body 1 at the lower end of the lower part 10, 13 and is connected with a bearing ring 7 which is fastened approximately at the longitudinal center of the drive pipe 6. Thus, the upper half of the drive pipe 6 is loaded not only by the driving torque, but also, in addition, by alternating axial forces from the inherent weight and the operation of the press spindle, including the material to be pressed. Therefore, at least this upper half must be laid out in a correspondingly more expensive manner. With respect to maintenance, assembly and repair, it is disadvantageous that the clearing wings 23 are fastened at the drive pipe 6. Another disadvantage, which also causes increased expenditure with respect to construction, is the collection and removal of the pressed out fluid in the lower part 10, 13 in two planes 27, 28 and 31, 32, 33 which are at a distance from one another in the axial direction, and the collection and removal of the pressed material in a third vertical plane 22, 23. Also, the step-up gear unit 5 of the drive arrangement is held so as to be fixed against relative rotation. Repairs, assembly and maintenance of the entire lower press area from the step-up gear unit 5 to the spindle body 1 are complicated and costly.
SUMMARY OF THE INVENTION
The invention has the object of facilitating maintenance, assembly and repair in the press area below the upper part of the housing, and reducing the load of the drive arrangement and the drive pipe.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in that the drive pipe has an upper part and a lower part which can be telescoped one inside the other and which are connected with one another by means of a coupling. Maintenance, assembly and repair in the lower press area down to the drive arrangement are facilitated in that either the upper pipe or the lower pipe are telescoped out of the work zone relative to the other part of the drive pipe. The coupling compensates for possible alignment errors and/or axial relative movements of the upper pipe and lower pipe which can occur in operation, e.g. because of thermal expansions. Thanks to the coupling, the upper pipe and lower pipe are freed from all external loads with the exception of the transmission of torque. These pipe parts can therefore be constructed so as to be relatively thin-walled. In addition, the drive arrangement is freed from axial forces, which could otherwise result, e.g. due to temperature expansions in the drive pipe, by means of the telescoping of the drive pipe.
Particularly simple axial relative movements of the upper pipe and the lower pipe, e.g. which serve for the the telescoping of these pipe parts or are a result of thermal expansions and operating deformations, are made possible with the tooth coupling including a plurality of
REFERENCES:
patent: 1608158 (1926-11-01), Benson
patent: 1815559 (1931-07-01), Garrigus
patent: 2613060 (1952-10-01), Trahan
patent: 2664814 (1954-01-01), Ahlborn
patent: 2709957 (1955-06-01), Armstrong
patent: 2912923 (1959-11-01), Jung
Luhrs Hermann
Tegtmeyer Kurt
Werner Wolfgang
Gerrity Stephen F.
Hornsby Harvey C.
Saltzgitter Maschinenbau GmbH
Striker Michael J.
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