CN2172163Y - Air extraction winnowing machine - Google Patents

Abstract

The utility model relates to an air exhaust type winnowing machine. The utility model is characterized in that a centrifugal air exhauster is arranged at the end of a bran discharging tube, and the other end of the ban discharging tube is communicated with a screening cylinder. A charging bar and a screen with double layers are arranged in the screening cylinder. Compared with existing air compressed type winnowing machines, the winnowing machine can make light impurities, heavy impurities, net grain and coarse grain separated from raw materials. Because of adopting ventilation type, a feeding funnel can be dropped, which can ease the labour intensity of an operator. The utility model has the evident advantages of convenient feeding, high work efficiency, etc.

Description

Air extraction winnowing machine

The utility model belongs to separation technology field, is a kind of exhausting formula winnowing machine.

Existing pressure wind formula winnowing machine charging aperture height need manually be praised feed, can only weight two separates (wheat bran, contain heavy coarse cereals), and easily the blanking inequality weight often occurs and is regardless of, and discharging opening is low, needs can not pile up inefficiency with going out with connecing fortune.

The purpose of this utility model is that a kind of charging aperture of design is low, the discharging opening height, and weight impurity, clean grain, grain accumulate four separation, the exhausting formula winnowing machine of high efficiency.

The main technical schemes that the utility model is taked is improved existing pressure wind formula winnowing machine, changing original pressure fan is air exhauster, be about to the end that centrifugal exhauster is contained in row's chaff pipe, the vacuum of utilizing exhausting to form sucks impure raw grain in the sieve barrel by feed hopper, screens separation.Keep feed hopper, grain discharging tube, row's chaff pipe.On the wall of sieve barrel, be provided with the air vent of adjustable tube internal pressure, and be provided with rod for stiring materials at sieve barrel internal upper part, rod for stiring materials is contained in the rotating shaft, rotating shaft is contained on the sieve material tube inner wall by support, feed pipe is connected sieve barrel upper side mouth, double-deck screen cloth shape in the shape of a spiral is contained in bottom in the sieve barrel, be provided with row's grain Yun Kou in the sieve barrel lower end of screen cloth outlet, emptying grain mouth, row's heavy seeds mouth, row's chaff pipe is communicated with the centrifugal exhauster import from sieve barrel top mouth, be provided with blade and the taper fluid dividing cover that is used for pulverizing long impurity in row's chaff pipe before the air exhauster import, centrifugal exhauster dress top side, blade position is provided with row's chaff mouth, thereby constitutes a kind of exhausting formula winnowing machine.

This exhausting formula of the utility model winnowing machine provides a kind of desirable seperator for grain screening field.Owing to adopted air exhauster, feed hopper can reduce, and has alleviated operator's labour intensity; The spiral double-deck screen cloth that adopts can sift out the back with the heavy seeds in the raw material (sand grains, soil block etc.) and the raw grain (as Mai Yun etc.) that does not purify shell and separately discharge, and reaches weight impurity, grain, grain accumulate four separation only.Compare with existing pressure wind formula winnowing machine, have feed conveniently, the discharging opening height can be piled up, and weight impurity, clean grain, grain accumulate four separation, remarkable advantages such as operating efficiency height.

Accompanying drawing is represented the structural representation of the utility model exhausting formula winnowing machine.

Referring to accompanying drawing, the utility model exhausting formula winnowing machine mainly is made up of feed hopper (omitting the end among the figure shows) sieve barrel 7, taper fluid dividing cover 12, blade 14 and centrifugal exhauster 15.Sieve barrel 7 comprises: double-deck screen cloth 4, funnel 6, rotating shaft 8, rod for stiring materials 9.Accumulate mouth 3 with the row's heavy seeds mouth 1 that is located at sieve barrel 7 lower ends, row's grain mouth 2, row's grain.Double-deck screen cloth 4 shape in the shape of a spiral is contained in the inner chamber that sieves barrel 7, termination funnel 6 on it, rotating shaft 8 is contained on the inwall of sieve barrel 7 by its support, rod for stiring materials 9 is contained in the rotating shaft 8, the side mouth of dress rod for stiring materials 9 positions is communicated with feed pipe 10 on the sieve barrel 7, the top communicates with row's chaff pipe 11, and the barrel of sieve barrel 7 is provided with air vent 5.Row's chaff pipe 11 connects the entrance point of air exhauster 15, is provided with taper fluid dividing cover 12, blade 14 before the air exhauster import and between row's chaff pipe 11, and blade 14 is coaxial with the blade of air exhauster 15, and the top side at the dress blade position of air exhauster 15 is provided with row's chaff mouth 13.

Connect 15 work of power drive air exhauster during use, by 13 air drafts of row's chaff mouth, form vacuum in the sieve barrel 7, infeed material by feed hopper, air exhauster can suck impure raw grain in the sieve barrel 7 by feed pipe 10, after rod for stiring materials 9 was stirred, light impurity (wheat bran, wheat straw, straw etc.) sucked in the air exhausters 15 through row's chaff pipe 11, contained former chaff that heavy seeds, chaff accumulate through the upper strata of funnel 6 streams at double-deck screen cloth 4.Raw grain and heavy seeds (sand grains, soil block etc.) drain on the lower screen by the upper strata screen cloth under vibration, and it is online that the raw grain (as Mai Yun etc.) that does not purify shell is stayed upper sieve.Heavy seeds drains in the sieve barrel 7 through 1 discharge of row's heavy seeds mouth by lower screen under vibration.Clean grain flows down along lower screen in the centre of double-deck screen cloth 4, discharges through row's grain mouth 2, and grain accumulates along under the upper stream of double-deck screen cloth, accumulates mouth 3 by row's grain and discharges.Enter the light impurity of air exhauster 16 by row's chaff pipe 11, after fluid dividing cover 12 shuntings before air exhauster 16 imports and between row's chaff pipe 11, long impurity enters air exhauster 15 inner chambers through blade 14 choppings, by the centrifugal force that produces behind the blade whipping through 13 discharges of row's chaff mouth.

Claims (1)

1, a kind of exhausting formula winnowing machine, has blower fan, feed hopper, grain discharging tube, row's chaff pipe, it is characterized in that also having the sieve barrel, blower fan adopts centrifugal exhauster, centrifugal exhauster is contained in the end of row's chaff pipe, the wall of sieve barrel is provided with the air vent of adjustable tube internal pressure, sieve barrel internal upper part is provided with rod for stiring materials, the bottom is provided with double-deck screen cloth, rod for stiring materials is contained in the rotating shaft, rotating shaft is contained on the sieve material tube inner wall by support, and feed pipe is connected sieve barrel upper side mouth, and double-deck screen cloth shape in the shape of a spiral is contained in the sieve barrel, sieve barrel lower end is provided with row's grain Yun Kou, emptying grain mouth, row's heavy seeds mouth, arrange the chaff pipe and be communicated with the centrifugal exhauster import from sieve barrel top mouth, be provided with taper fluid dividing cover and the blade that is used for pulverizing long impurity between centrifugal exhauster import and row's chaff pipe, the top side at centrifugal exhauster dress blade position is provided with row's chaff mouth.