SU1342456A2 - Chaffer fin sieve - Google Patents

Description

The invention relates to agricultural machinery, can be used in combine harvesters and grain cleaning machines and is an improvement of the device according to the author. St. No. 741823.

The purpose of the invention is to increase the universality of the sieve and its throughput by intensifying the process of separating the grain heap and increasing the screening and transporting capacity.

FIG. 1 shows the louvered

sieve, longitudinal section; in fig. 2 - 15 increases the porosity of the pile, which is improved with dies, cells and separates the conditions of separation. Presence of two

corals with straws; on ig. 3 is a section A-A in FIG. 2; on ig. 4 - section BB in FIG. 2; on ig. 5 is a view of B in FIG. four; in fig. 6-20 IG in FIG. four.

The louvre sieve contains frame I with successively mounted plates 2, which are fixed on the axis x 3 and are connected with mechanism 4 through the turn of the louver. The plate 2 in the upper part is provided with combs 5, which on one side have a tooth 6, mounted perpendicular to the surface of the comb. The flat part of the plate 2 is provided with cells 7 and holes 8 with straw traps 9.

In the middle part of the plate, along each ridge, stiffening ribs 10 are made, directed upwards with convexity to improve the separation conditions. In order to increase the effectiveness of the effect on the grain pile, the cells 7 and the holes 8 with the straw trays 9 are alternated with each other in a checkerboard pattern. The openings of the cells 7 are round-shaped with a slope to the plane of the plate. The holes 8 and the straw trays 9 have a profile in the form of the ends of the teeth of the combs, which creates the same conditions of impact on the grain heap over the entire surface of the plate,

The louvre sieve works in the following direction.

30 35

40 45

Depending on the condition and type of 50 harvesting of the testes, it is not

harvested culture mechanism 4 rotation of the blinds set the plate 2 in the desired position. Grain heap, coming to the sieve, pop

Under the joint action of inclined air flow and louvers, reciprocating along with axis 3 and frame. Under the action of combs 5, teeth 6 and straw strands 9, intensive and uniform flooding, pulling apart and transportation of grain heaps occur.

The presence of teeth 6 and two rows of straw strands 9 in the shape of the ends of the teeth of the combs 5 increases the sieve transport capacity and at the same time

Rows Aceek 7 and 8 holes, arranged in a checkerboard pattern, increase the total area of grain passing through the sieve, which increases its throughput and, accordingly, the cleaning capacity. The shape of the cells 7 and the convexity of the ribs 10 contribute to improving the screening of the grain.

25

When harvesting seedlings of herbs and crops that require smaller holes, the plates 2 are transferred to the closed position by the louvre turning mechanism 4. when overlapping adjacent plates. The shape and dimensions of the windows formed between the combs 5 correspond to the openings 8.

40 Transportation of the grain pile in the closed position of the plates 2 is carried out by teeth 6, straw -. chains 9 and the protruding part of the cells 7. When the sieve is operated in a closed position, a high transport and separation capacity is ensured with minimum clogging of the bunker grain. Especially effective is the use of such sieves for

A sieve is required on the sieve of additional tools used on grain harvesting and grain cleaning machines.

bb

0ue.ii

View

ig.5

VidG

fpug.G

Compiled by V. Volchenko Editor P. Gereshi Tehred M. Didyk Proofreader M. Maksimishinets

Order 4536/1 Circulation 627 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, - Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (4)

1. BLINDING LATER by ed. St. No. 741823, distinguished. the fact that, in order to increase the versatility of the sieve and its throughput by intensifying the process of separating grain heaps and increasing the sifting and conveying ability, the plates are made with cells and holes, and equipped with straw loops located above the holes. 2. Sieve pop. 1, characterized in that the cells are round in shape with a slope in the plane of the plate. 3. Sieve pop. 1, characterized in that the straw claws and the holes located beneath them have a profile in the form of the ends of the teeth of the combs. 4. Sieve pop. 1, distinguished by the fact that the cells and straw claws are staggered on the plate. SU., „1342456