DE92063C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

Screen grate.

The rust which is the subject of the present invention is mainly found in the processing industry It is used and serves to extract the larger from a pile of grains and pieces of various sizes To deposit pieces.

It consists of several sloping or arched stairway systems a (Fig. 1, 2 and 3), which have openings b of any shape and which, by means of their continuous transverse walls c, are alternately stored in two storage frames d and d ¹ .

Accordingly, one half of the number of stair systems is fixed in the first frame d and the other half in the second aF. The movement of the grate is such that the stair systems mounted in one frame always climb up and the stair systems fastened in the other frame submerge and vice versa, so that the so-called loosing meshes arise from the alternating climbing and submerging of the covered stair systems and their transverse walls c .

On these sloping roofed stair systems that create the loosing meshes the coarser material is moved and discharged at the end of the grate; the finer goods fall through the mesh.

So this happens in such a way that when you climb one of the sloping stairs this happens Good with being lifted up and as soon as the other stairs moving downwards come to lie deeper than the former, so submerge, with the mesh of the higher The stairs lying in the front open up and free the goods from the higher ones Sliding down stairs to the next lower flight of stairs.

Now the type of movement is repeated; the now lower-lying stair systems rise up and the staircase systems, which are at the same time higher, submerge, so that Newly raised goods slide down onto the next lower set of stairs. In this way, the coarser material gets from stair to stair and is finally on the As already mentioned, the end of the grate is discharged, while the finer goods are carried through the Meshes of rust falls.

The alternating highest and lowest positions of the stair systems are dotted in FIG made evident.

The advantage of this sieve grate consists in the fact that with the peculiar rising and falling Movement of the cross bars in the meshes of the goods to be sorted can not get stuck because the coarser material from the meshes of the covered, respectively higher lying stairs, in which position the meshes of the same open to the front, that is are free to slide down the respective lower stairs.

Compared to other existing sieve grids (especially compared to the patented sorting grids No. 36591 and Patent No. 62792, Class ij This screen grate has instead of the shoulders provided, mesh-forming longitudinal bars Rod systems arranged at right angles to the discharge direction, diagonally covered, convey their peculiarity shaped approaches at the front

Moving up and down stairs imagined creating diarrhea openings remain constant and the above-described opening resp. The meshes of the respective higher stair systems are released.

Of course, the inclined, loop-forming approaches of the cross bars can also be used as desired have other shapes, or ^ in a different way on both sides of the cross bars to be ordered. Should particularly large pieces, which are divided into three or more Staircase systems rest at once, on which grids are deposited, so you can with Various transport devices can be combined with this sieve grate, which the help move particularly large pieces on the apparatus.

Such a transport device is shown in FIG. It simply consists of tubular round iron bars s which are attached above every second staircase system t and whose rotational movement moves the large pieces. The stair systems need to make any up and down movement going t, but can be stored securely. The second stair systems χ then take care of the moving up and down and their highest positions are dotted and their lowest positions are shown in full lines.

The drive of the sieve grate can also be carried out in various ways. A simple solution to a drive can be seen in FIGS. From a cranked shaft ν, one or two push rods w set the double-armed levers m and simple levers η wedged on a fixed shaft / in an oscillating motion. Likewise, by means of the transfer lever ο and the connecting push rod ρ, the double-armed levers r wedged onto the fixed shaft qu receive the same oscillating up and down movements. On the two-armed levers m and r , on the one hand, the storage frame d and, on the other hand, the storage frame d ^{l of} the staircase systems of the grate are attached. From these double-armed levers, the mounting frames and therefore also the stair systems receive the above-described up and down movement.

For the exact parallel movement of the ascending and descending stair systems, the control levers h are loosely wedged onto the rear shaft and are connected to the storage frame d ¹ .

Claims (1)

Patent Claim:; A sieve grate with angled bar systems arranged at right angles to the discharge direction, which form diarrhea openings and alternately move up and down in such a way that by alternating ascending and submerging they create stairs, by which means the coarser material to be sorted from the meshes of the respective higher stairs the position of which the through-flow openings are open or free at the front slides down the respective lower stairs and so progressively finally on The end of the grate is discharged, while the finer material passes through this Movement of the rods equally wide remaining mesh falls. For this purpose ι sheet of drawings.