DE1502243A1 - Screw press - Google Patents

Description

The invention relates to screw presses, including those used for removing liquids from certain materials, such as B. natural or artificial latex, what materials are used tend to clump together into large lumps when mechanical pressure is applied.

Presses of this type are described in pending U.S. patent application Ser. No. 92 909 of March 2, 1961, assigned to the assignee of the present application. In the aforementioned application it is explained that by removing a considerably large proportion of liquid from the latex material by mechanical extrusion, coupled with the exertion of a shearing action, it is possible to get a relatively porous, almost completely dry, curvilinear rubber, which is convenient in a conventional thermal dryer can be subjected to a drying process to practically all contained in the latex material Remove moisture. As already mentioned in this application, it is important that a porous, kr time I-

909811/0409

O ^.: .; ·. ■. ·; ■■■; AL - 2 -

shaped rubber comes out so that the moisture is not encapsulated within the material. To achieve this, it was proposed that the material coming out of the press had the effect of a mechanical shredding or shredding device to subjugate. This mentioned USA patent application corresponds to the German patent application F 39 325 X / 82.1 dor \ nmelderin dated March 26, 1963.

The present invention provides a shredding device which is incorporated into a screw press as part of the same is installed and is preferably driven by the screw press; this device acts on that crumbly material as it emerges from the press in order to shred the material immediately there into small pieces and in this way to prevent the material from forming relatively large lumps, which are more difficult need to be dried and consequently require a longer time in a thermal dryer to dry completely. The Schnitzler causes the Krüraeli material to tear and thus any smallx * pores or lioliii'äiuiie, those in the Kx * üiuelmatex * iul ~ at% * read the press could still be present.

Accordingly, the primary object of the invention is to provide a new type of carved ivox seal for screw presses. This shredding device is intended to tear the material apart at its exit from the screw press by simple Cause turning effect. It should also be possible to use the Shredding device easily from the same drive source to drive, which also drives the screw press resulting in a compact and effective unit} the shredding device is intended as a suitable accessory to the Press trained.

Further objects, features and advantages of the invention will become apparent from the following description, the drawings and the claims

9098 11/0409 _Μ or.qikal

Fig. 1 is a side view and shows the cutting device and the drive in general Relation BU of the Schatcktnprtsse, where the cage the screw press is shown in section to dfc arrangement of the tendon ducts on the VeIXe to be able to represent the screw press.

Fig. 2 is an enlarged individual representation of the outlet end of the screw press in section and one Part of the shredding device and details of the performance * would decrease for the shredding device

Fig. 3 is a single view of the actual SohnitmJL element in an enlarged view.

Flg. k is a partial end face of the shredding element, viewed from the ends of the blades of the same.

5 i * * a schematic perspective illustration the drive arrangement for the screw press and for Aas Sohnitζelement.

According to the drawing, which shows a preferred embodiment of the invention, especially according to FIG. 1, the screw press has a cage 10 of known construction, which may or may not have relatively small drainage openings in its walls, depending on the intended use. The requirements for such drainage openings and the cases in which they are used are described in the current application mentioned at the beginning. The press has an inlet triohter 12 which has an entry opening into the cage 10 and the cage has an outlet opening. This is formed in the Belspiel shown by an outlet ring Ik , which is connected by means of a threaded connection 15 to a support ring 17 which is attached to the end of the cage 10. A conventional adjusting device 18 in the form of a worm and a worm wheel can be provided for rotating the ring 17 and thus for axially distributing it for the purpose of setting the size of the exit opening, as will be described in more detail below.

909811/0409

- Il -

BATH AL

In the longitudinal direction of the screw press, the main drive shaft 20, which forms the bearing and the drive for a feed screw 22 and for a number of screw flights Zh , which are spaced apart from one another on the shaft and connected to it, for example by a wedge (not shown), runs so that they are rotated by the shaft 20. In the preferred embodiment of the press, the screw flights are interrupted in that the individual flights 24 are separated from one another by sleeves 25 carried by the shaft. One or more of these sleeves can be conical , such as the sleeves shown at 25a, to reduce the flow area through which the material must flow between these sleeves and the cage walls and in this way exert a considerable mechanical pressure on the material *

In the area of the exit ring 14, a sleeve 27 is provided around the drive shaft, which together with this ring forms an annular exit opening 30 (FIG. 2) through which the material is ejected from the press . The size of the throttle opening can be adjusted by moving the ring 14 in or out. As is known, the sleeves 25 and 25a are provided opposite fixed breaker lugs 32, which protrude inward from the cage wall and prevent the material that is pressed over these sleeves from twisting. By working together di "s" r noses with the screw threads and a torn, Zersohnitxelwirkung is applied to the light passing through the press · crumbs latex Meferlal.

In the embodiment shown, the drive of the shaft 20 takes place from the outer end of the shaft . The shaft 20 on the other side of the inlet funnel 12 is supported in a bearing 35. On Auslafleae · dl · W is _- IIe connected via a coupling 20 to a drive shaft 42 4θ _t

909811/0409 _KAn - 5 -

BAD original

which in turn is driven by a drive motor 45 via a suitable reduction gear.

For purposes of explanation, a drive system is shown schematically in FIG. 5, in which a motor 45 is a Pinion 47 drives, which is connected to an intermediate shaft 50 attached gear 48 is engaged. A gear 52 connected to the drive shaft 42 meshes with the gear 48, and in this way the power is transmitted to shaft 42 and then through clutch 40 to the main shaft of the press.

The outlet sleeve 27 is preferably connected in such a way that it rotates together with the shaft 20, and this sleeve carries one or more tear lugs 55. These lugs are intended to rotate within the outlet ring 14, as can be seen in particular from FIG. Outside this ring, a tear element 60 is rotatably mounted on the shaft 20. This element can be formed by connecting two matching halves 60a and 60b by means of screws 61, these two halves being fastened to a rib-like support sleeve part. The rupturing element is provided with a number of cutting blades 65, each of which preferably has an axially extending root 11 66 and a helically extending front cutting part 67. As will be described in more detail, the chipping element is preferably rotated with the direction of rotation opposite to the direction of rotation of the shaft and the nose or lugs 55, and the helical parts 67 of the cutting blades are preferably inclined in the direction of rotation of the chipping element.

As shown particularly in Figures 2 and 5, is the intermediate shaft 50 also with a driving pulley 70 provided over which one or more straps 72, preferably V-belts run, which also run over a pulley 73 and over belt grooves 75 in the sleeve-shaped Part 62 are provided which carries the scraper element 60.

909811/0409

FIG. 2 in particular shows that this sleeve-shaped part is mounted on roller bearings 77 which are provided around the coupling ho. In this way, the sleeve and the pinion element can rotate freely with respect to this coupling and with respect to the ¥ ellen 20 and Jf2.

As a result of this arrangement, it is twisted, as in Pig. 5 is indicated by directional arrows, the Schnitzelelement with the HauptantrMjswell · 20 opposite direction of rotation. As a result, the blades 65 and the lugs 55 rotate against each other, and preferably with only a small gap between these parts, as shown at 80 in FIG. The effect of these parts is therefore like a Tearing of the emerging through the opening 30 and between the counter-rotating parts of the material flowing outwards. In this way, the material is effectively shredded and cut up so that as much exposed surfaces as humanly possible are created in it with a cutting or shearing action that would produce a relatively smooth cut through the material. In this way, a most effective catfish shredded toos or shredded product obtained, daa within relatively can be dried thoroughly in a thermal dryer for a short time.

In a preferred arrangement, the shredding element rotates 60 with a higher speed than the W'II · 20. By using suitable pulley sizes and drive gears can, as is obvious to the person skilled in the art, all desired Speed differences are generated. In the practical arrangement the shredding element 60 ran at the three-speed speed wi · the W «ll · 20, and this speed difference has proven to be proven favorable.

After the invention becomes a new type of carving device created, di · b * qusa in already before hand screw presses ".Ingsbaut can have been built, and awar with the addition of" in "r

909811/0409 _B. . ■

AD - 7 -

minimal number of additional parts and practically without changing the pre-construction or its design. The power for the shredding device is from the drive of the Screw press itself derived, and to this extent the pulping device according to the invention can serve all accessories are referred to, which can be grown and dismantled relatively easily with little effort and time. The shredding device is found to be extremely effective in preventing the formation of large lumps of Latex material exiting from a screw press used to dewater this material.

The method and the design of the device, which have been described above are a preferred embodiment of the invention, but on which the invention should not be restricted; on the contrary, deviations from this are possible without affecting the claims in the claims characterized invention idea is left.

909811/0409

Claims (2)

Claims 1. Screw press with a cage through which a rotatable shaft extends which has at least one worm gear contributes to the conveyance of the material through the Cage and is used to exert pressure on the material located in the cage, the cage having an outlet opening, through which the material is pressed through the screw flight and on which an element surrounding the shaft is provided is that with this opening an annular outlet throttle opening forms, characterized by a scraper element provided outside the cage coaxially with the shaft, which carries a number of sheets to be run towards the opening, and a drive connected to the shredding element to twist the same and thus to move the leaves along the surface to tear the through the surface escaping material into relatively small particles. 2. Screw press according to claim 1, characterized in that that the Schnitzelelement is driven by its drive with the direction of rotation of the shaft in the opposite direction of rotation will. 3 * screw press according to claim 1 or 2, characterized in that in the opening "at least one fixed" nose is provided, along which the material is ejected, the blades of the chip elements are arranged so that they are around the outlet opening and along the nose-shaped part move at a distance from this in order to tear the material between the blades and the nose-shaped part without generate therebetween a · Schneidwlrkung eu. BATH ORIGINAL 90981 1/0409