RU1787573C - Arcuate sieve - Google Patents

Description

Improving the efficiency of using sieves in production is ensured by increasing the yield of starch, increasing the reliability of the device and reducing maintenance costs.

In FIG. 1 shows an arc sieve, a longitudinal section; FIG. 2 is a view along the arrow of FIG. 1; in FIG. 3 - node I (enlarged) in FIG. 1; in FIG. 4-node II (enlarged) in FIG. 1; in FIG. 5 is a section BB in FIG. 1.

The arc sieve is a box-shaped welded housing 1, inside of which are two movable rails 2, curved in radius, along the side walls. The guides 2 are fixed on the guides 2 and the horizontally spaced needles 4. In the free state, the guides 2 are held by handwheels 5, the cylindrical part of which passes through the holes in the side walls of the housing and is fixed in the sleeves 3.

A comb 6 with needles is fixed on the inner wall of the bunker of the oversize product. A tube 7 is installed in the upper part of the sieve under the overflow device 10. Kapron fabric 8. is lined around the perimeter with dense material 9 (for example, a filter-press fabric) is looped over the tube 7 and needles 4 located on the guides 2 and comb 6.

The sieve fabric is mounted as follows.

Sewn in the upper part of the loop, it is worn on the tube 7, which is installed under the overflow device, and is passed with a slight tension along the guides 2 from the bottom. Then the guides 2 are wrapped with a sieve cloth and secured to the needles 4, as shown in FIG. 5.

By rotating the handwheels 5, one longitudinal side of the screen fabric is tightly clamped between the guide and the inner surface of the side wall of the screen body. Then, using the handwheels of the other side, the sieve fabric is stretched in the transverse direction. The longitudinal tension is carried out by pulling the net down and securing it to the needles of the comb 6.

The device operates as follows.

The initial product is fed into the overflow device 10 in the direction of arrow B, passes through the partitions, extinguished, and smoothly overflowing over the crest of the overflow device, is introduced across the entire width onto the screen surface. When moving along the sieve surface, the source product is divided into sublattice, which is removed from the sieve in the direction of arrow D, and oversize, which is displayed in the direction of arrow D.

Economic efficiency is achieved by increasing the yield of starch, increasing reliability and reducing maintenance costs.

Claims (1)

SUMMARY OF THE INVENTION An arc sieve, comprising a housing with a feeder and overflow device in the upper part, hoppers for draining the sieve and oversize products in the lower part, mounted in the housing by arcuate guides screen cloth and a fixture for attaching it, characterized in that, in order to increase the reliability of operation, ease of maintenance of the sieve and reduce the loss of free starch, the fixture for fastening the screen cloth is made in the form of a comb with needles fixed on the inner wall of the hopper for removal of the oversize product, bushings and needles fixed on arcuate guides, and a tube, and the screen cloth in the upper part along the entire width is made with a loop in which is installed the tube, its lower part is fixed on the needles of the comb, and the sides of the screen cloth located around the arcuate guides with the possibility of fixing on the needles of the latter, while the arcuate guides are installed with the ability to adjust the clamp to the side casing walls having openings by means of handwheels with cylindrical protrusions extending through openings in the side walls and connected to the bushings. FIG. 1 Fig.Z FIG. fi g. 5