SU1763051A1 - Air separator for loose materials - Google Patents

Description

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(21) 4868217/03 (22) 09/21/91 (46) 09/23/92. Bul No. 35

(71) All-Union Scientific Research Institute of Agricultural Mechanization

(72) V.M. Drincha

(56) USSR Copyright Certificate No. 1479141, cl. B 07 B 4/02. 1989.

USSR author's certificate Mg 1407587, cl. B 07 B 4/02, 1986. (54) Pneumatic separator of bulk materials

(57) Use: in the technique of separation of bulk materials in agriculture,

g .., ... .. Ј - e chemical and construction industry. Essence: the source material in the form of jets comes from the hopper 3 and is blown by the inclined air flow created by the fan 1. Light particles are blown out from the formed fan of separation products and fall onto pitched boards 7, from which they are output, heavy particles are sent to horizontal receivers 6. The installation of air-permeable pitched planks 7 with displaced upper edges allows light particles to be isolated, excluding their entry into receptacles of heavy particles. 3 il.

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This invention relates to a technique for separating bulk materials and can be used in the agricultural, chemical and construction industries.

A device for separating bulk materials in a horizontal air flow is known, which includes fans, a hopper and receivers for separation products 1.

A disadvantage of the known device is the low efficiency of the separation process due to the ingress of light particles into the output due to the shielding effect of the layered particles.

The closest to the claimed technical solution for the function performed and the effect achieved is a pneumatic separator of bulk materials containing a fan with an outlet, a hopper located above it, horizontal receptacles of separation products 2.

A disadvantage of the known device is the low efficiency of the separation process, due to the ingress of light particles into receivers of heavy particles. The aim of the invention is to increase the efficiency of the separation process by preventing light particles from entering the heavy receivers.

The goal is achieved by the fact that in a pneumatic separator containing a fan, with an outlet nozzle, a hopper and horizontal receivers of separation products, curvilinear air-permeable pitched boards are placed above each other over the receivers of separation products, with the upper edge of each upstream board closer to the hopper than the edges of the underlying pit boards, and the bottom of the hopper is made with holes.

Installing air-permeable curvilinear pitched boards, one above the other and above the receivers of separation products, makes it possible to isolate light particles from the fan of separation products, while preventing light particles from falling under the action of their own weight into receivers heavy, which leads to an increase in the efficiency of the separation process. Making the pitched boards breathable reduces the resistance to air flow, which virtually eliminates the deformation of the air flow when meeting with pitched boards. Making curved boards curvilinear, makes it possible to isolate light particles from

fans of separation products with minimal disturbance of the trajectory of movement of heavy particles.

The installation of pitched planks with displaced upper edges allows light particles to be isolated, excluding their penetration of heavy particles into receivers.

The completion of the bottom part of the hopper with the holes allows

0 material in oblique air flow in the form of jets. The supply of the separated material in the form of grain jets reduces the resistance to air flow and increases the flow of particles by this flow. For more than 5 students more uniform grain streams, the holes are made with constant pitch. All of the above signs contribute to the efficiency of the separation process.

0 Comparison of the proposed technical solution with the prototype made it possible to establish compliance with the Novelty criterion. In the study of other known technical solutions in this field of technology signs

5 that distinguish the claimed invention from the prototype have not been identified and therefore they provide it with the criterion of significant differences.

FIG. 1 shows a pneumatic separator,

0 general view; in fig. 2 is a view along arrow A in FIG. 1: in FIG. 3 is a section along BB in FIG. 2. Pneumatic separator of bulk materials contains fan 1, with outlet nozzle 2, which is installed at an angle to the umbrella. In the upper part of the nozzle 2, the loading hopper 3 is fixed, in its bottom part there are holes 4 arranged in constant pitch and alternating with jumpers 5. Under the loading

0 by the hopper 8, horizontal receivers of separation products b are installed, above which are air-permeable pitched boards 7 with edges 8.

Pneumoseparator works as follows

5 way.

Inclined air flow generated by the fan 1 and the outlet 2 blows grain streams of material moving from the loading

0 of the hopper 3. At the same time, the light particles are blown out from the formed fan of separation products and fall onto the pitched boards 7 and are brought out, and the heavy particles fall into the horizontal receivers of division products 6 and 6.

The use of the proposed technical solution makes it possible to increase the efficiency of the process of separating bulk materials by preventing light particles from entering the receivers.

t ylyh. In the separation of the grain mixture of wheat seeds Mironovska -808. separation efficiency in the claimed pneumatic separator increases on average by 7 ... 13%, and productivity by 3 ... 6% in comparison with the prototype and known analogues.

Claims (1)

Claims of the invention Pneumoseparator of bulk materials, containing a fan with an outlet nozzle, a hopper located above them, horizontal receptacles for separation products, about l and // AT( Fig.Z whosoever. that, in order to increase the efficiency of the separation process by preventing light particles from getting into the receivers of heavy particles, it is equipped with curved air-permeable pitched planks installed one above the other above the receivers of the separation products, with the upper edge of each upstream sloping board closer to the loading bunker than the edges the underlying pitts, and the bottom part of the hopper is made with openings.