DE387637C - Press for dewatering and briquetting - Google Patents

Description

Society for mechanical pressure drainage m. B. H. in Duisburg.

Press for dewatering and briquetting. Addendum to Patent 35944C). In the press described in the additional patent 3616o6 to patent 359441, in each press box two stamps, one of which (outer) to a certain extent the conclusion forms and thus takes the place of the cover used according to the main patent; So only the inner punch does the pressing work. The punches are turned by nvei cam taps guided.

According to patent 3616o6, the press is driven by a gear drive, which works on a ring gear located on the outer circumference of the ring plate.

It has been shown that the two measures mentioned have disadvantages are linked, the elimination of which is the subject of the present invention.

The one-sided pressure is to be described as a disadvantage, since the drainage not done as thoroughly as with double-sided pressing. Another disadvantage consists in the fact that with one-sided pressing radial pressures on the *) Former additional patent 36itio6. rotating table occur, which can reach considerable sizes. These radial pressures are caused by friction between the material to be pressed and the walls the press box during the movement of the inner punch within the press period.

A consequence of these radial pressures is the occurrence of significant stresses different press parts and increased power requirement due to the increased resistance those pressure rollers that have the task of holding the turntable in its position.

Another disadvantage of the original arrangement of the press is present in the one-sided drive. Apart from the occurrence of high tooth pressure and severe wear of the teeth suffer the aforementioned pressure rollers from the Tooth pressure a very unfavorable additional load. This also reduces the frictional resistance caused by the above-mentioned pressure rollers, which center the turntable in its position, so that the Power requirement of the press is influenced quite unfavorably.

According to the invention, the outer piston serves not only as a closure, rather, it also takes part in the pressing effect.

Furthermore, the drive is not, as before, one-sided, but two-sided.

The drawing is used to illustrate the arrangement. In this Fig. i shows the pressing process in a schematic manner. Fig.2 is a development Fig. 3 is a diagram. Fig.:I and 5 serve to illustrate the one-sided and of the two-sided drive.

The schematic representation of the pressing process shows that the inner curve i from position A (start of pressing) to B (end of pressing) constantly increasing.

The piston 2 controlled by this curve therefore moves continuously outward. If the outer curve 3 were now concentric, i. H. the outer piston 4. remained immobile in the radial direction, i.e. in the pressure direction, so would arise a radial force originating from the inner, radially moving piston because during the pressing a pressure between the pressed peat mass 5 and the side walls of the press box 6 is created, which strives to be with the rotating table top take the firmly connected press box in the printing direction.

If, however, according to the invention, the outer piston q. while of the pressing process controlled in such a way (let it also take part in the pressing movement, so the previously mentioned radial pressure is replaced by an oppositely directed one equal pressure canceled, provided that the press paths of the outer and inner pistons are the same.

From the drawing it can be seen that the outer curve 3 of the Position A (start of pressing) remains concentric up to point C of the curve is. Thus, within this pressing period, there is no equalization of the radial forces instead of. This is also justified because up to this point the pressing pressures are and thus the radial pressures are also low, which can be seen from the pressure path curve shown (Fig. 3) emerges. They only get from point C to position B (end of pressing) Compression pressures higher '' values, and in this last part the compression path is the outer one and inner piston the same, so that a complete cancellation of the radial pressures and thus the pressure rollers 7 (Fig. d, 5) are also relieved. From G to B is the outer curve 3 opposite eccentric as the inner curve.

From Fig.q. and 5 there is the advantage of the two-sided drive.

With one-sided drive, the resulting pressure R is equal to the tooth pressure P.

Since the ring gear 8 is firmly screwed to the rotating table 9, all forces acting on the ring gear are also transferred to the table.

The rollers 7 that hook the task of holding the table in place, are loaded with the total pressure P = R. This pressure is because of the low peripheral speed of the table very high. and the power consumption of the press increases accordingly. The wear of the rollers; and their pin is correspondingly large.

If the two-sided drive is selected, the tooth pressure is divided into two Divided into halves. which engage on the left and right of the ring gear. The resulting Forces R and R1 are equal and oppositely directed, so that only one torque arises and the rollers 7 are completely relieved. By halving the Tooth pressure, the teeth of the ring gear are only half loaded, so that this too Machine part is only half stressed.

The press can therefore be built lighter.

Claims (3)

PATENT CLAIMS: i. Press for dewatering and briquetting after Patent 359.I..1 in the version according to the additional patent 3616o6, characterized in that claß both plungers participate in the pressing action. 2. Press according to claim i, characterized in that the pressing during most of the pressing path and especially towards the end of the pressing, when the pressing pressure reaches its greatest value or approaches it, is also contributed by the external coll-en, expedient in such a way that the outer pressure curve is not mounted concentrically to the axis as before, but opposite eccentric as the inner curve is arranged. 3. Press according to fletn main patent and the additional patent 3616o6, characterized in that it receives double drive, so that the tooth pressures are reduced to half and the radial pressures caused by the one-sided drive are eliminated.