A kind of pair of vertical air classifier in air channel
Affiliated technical field
The utility model relates to a kind of cereal impurity separating device, is the device that comes removing impurities by the difference of object particle proportion, belongs to grain cleaning machinery field.
At present, in worker, agricultural production, impurity separates pneumatic separation device commonly used and mainly contains cycle winnowing device and two kinds of vertical air classifiers, and vertical air classifier all adopts single air channel structure.Grain foreign material material from the air classifier charging aperture to the air classifier discharging opening; Can only carry out selection by winnowing one time; The impurity content that proportion is lighter in grain more for a long time; When perhaps grain stream thickness is big, also contain the impurity of many light specific gravities in the grain after the vertical air classifier cleaning of single channel, its selection by winnowing effect can not reach cereal processing or store the requirement of cleaning quality.
Summary of the invention
The purpose of the utility model is the deficiency that under the big condition of gently mix content height or cleaning amount, is occurred to the vertical air classifier in current single air channel, and a kind of device that impurity is cleaned effect and ability that improves is provided.
The purpose of the utility model realizes through following technical measures: the vertical air classifier in this pair air channel is on the basis of the vertical air classifier in existing single air channel, to improve to form; Its innovation part is that a slide carriage that takes the form of inclined plane at first newly is set in original air inlet; Make the space between slide carriage and the charging aperture form first air inlet, and the space under the slide carriage form second air inlet; Next is in the inner chamber of chassis body, to have set up an air channel fixed head, and the lower surface of this air channel fixed head should be positioned under the charging aperture, and on the slide carriage.Its upper surface should be hanged down at least 0.2 meter than the sidewall end face of chassis body.So in the inner chamber of chassis body, the space between the sidewall of this air channel fixed head and chassis body constitutes first air channel, and the space between the adjustable plate of original air channel constitutes second air channel in this air channel fixed head and the chassis body.
In order to prevent that inner and equipment room joint is drawn in the air channel of this air classifier extraneous air from a last cleaning equipment, the utility model near on the outer face of chassis body sidewall of a cleaning equipment drawing mechanism be provided with the charging aperture elastic baffle.And let this charging aperture elastic baffle remain seamless contacting with a last cleaning equipment drawing mechanism baffle plate.In addition for prevent the sieve nest internal gas flow from the grain face through getting into first air channel of air classifier, also between charging aperture elastic baffle and chassis body sidewall, be provided with the material elastic baffle.Should there be the gap of 5～50mm the lower surface of this material elastic baffle from the discharging opening bottom surface of a last cleaning equipment drawing mechanism.
The guiding mechanism that is used for realizing adjustable plate left and right adjustment in air channel in the utility model is made up of regulating block, adjustment lever, rotating shaft, adjustment pull bar, bearing pin.Wherein regulating block is fixed on the adjustable plate of air channel, and has bar hole on the regulating block.And the bearing pin that is fixed on the adjustment lever can upper and lower slip in this bar hole.One end of adjustment lever is linked in fixing rotating shaft.And adjustment one of pull bar is the other end that is fixed on the adjustment lever.
The beneficial effect that the utility model is compared with existing apparatus is: owing to pass through the air draught cleaning effect in two air channels; Not only impurity is cleaned effect and output improves greatly; And the width and an air channel fixed head in an air channel have structurally only been increased; Therefore simple in structure, volume is little, and the air channel width can adjust, it is strong to be suitable for ability.
Description of drawings
Fig. 1 is the structural representation of the utility model
Among the figure:
On 1 air trapping cover, 2 chassis bodies, the 3 air channel fixed heads 4 on a cleaning equipment drawing mechanism 5 material elastic baffles 6 charging aperture elastic baffles 7 on the cleaning equipment drawing mechanism baffle plate 8 a cleaning equipment drawing mechanism discharge end tear bent plate 9 first air inlets 10 charging apertures 11 second air inlets 12 slide carriages 13 air channel adjustable plates 14 rotating shafts 15 adjustment pull bars 16 adjustment levers 17 regulating blocks 18 discharging openings 19 bearing pins open
The specific embodiment
The utility model further describes with embodiment below in conjunction with accompanying drawing: what the vertical air classifier in this pair air channel was identical with the vertical air classifier in existing single air channel is: include air trapping cover 1, chassis body 2, a last cleaning equipment drawing mechanism 4, a last cleaning equipment drawing mechanism baffle plate 7, a last cleaning equipment drawing mechanism discharge end is torn bent plate 8, charging aperture 10, air channel adjustable plate 13, discharging opening 18 open.Its improvements are that a slide carriage that takes the form of inclined plane 12 newly is set in former air inlet, so the space between slide carriage 12 and charging aperture forms first air inlet; And the space under slide carriage 12 forms second air inlet 11.Also in the inner chamber of chassis body 2, set up an air channel fixed head 3 in addition.And let the lower surface of this air channel fixed head 3 be lower than charging aperture 10, and be higher than slide carriage 12.Its upper surface should be hanged down 0.2 meter than the sidewall of chassis body 2.In the inner chamber of chassis body 2, constitute first air channel between the sidewall of this air channel fixed head 3 and chassis body 2 like this; And formation second air channel between this air channel fixed head 3 and the original air channel adjustable plate 13.First air channel and second air channel top in chassis body 2 connects, and the air velocity in each air channel is essentially identical.On air channel adjustable plate 13, guiding mechanism is installed.It is made up of regulating block 17, adjustment lever 16, rotating shaft 14, adjustment pull bar 15 and rotating shaft 19.Wherein regulating block 17 is fixed on the air channel adjustable plate 13, and has bar hole on the regulating block 17.And the bearing pin 19 that is fixed on the adjustment lever 16 can upper and lower slip in this bar hole.One end of adjustment lever 16 is linked in fixing rotating shaft 14.And adjustment one of pull bar 15 is the other end of fixing adjustment lever 16.When this air classifier uses; Should let the discharging opening of drawing mechanism of a cleaning equipment extend in its charging aperture 10; Thereby for to prevent that extraneous air is drawn into from the equipment room joint in the air channel of air classifier, just near on the outer face of chassis body sidewall of a cleaning equipment drawing mechanism 4 be provided with the charging aperture elastic baffle 6 that material is a rubber slab.And let this charging aperture elastic baffle 6 remain seamless contacting with a last cleaning equipment drawing mechanism baffle plate 7.Simultaneously for prevent the sieve nest internal gas flow on the grain face through getting into first air channel of air classifier, also between charging aperture elastic baffle 6 and chassis body 2 sidewalls, be provided with the material elastic baffle 5 that material is a rubber slab.Should there be the gap of 5～30mm the lower surface of this material elastic baffle 5 from the discharging opening of a last cleaning equipment drawing mechanism 4.Height and grain that the big I in its gap is torn bent plate 8 open with a last cleaning equipment drawing mechanism discharge end flow thickness and upper and lower adjustment.
The concrete course of work of the vertical air classifier in this pair air channel is: earlier with the air trapping cover outlet mutually airtight connection of air intake device with the utility model; To go up a cleaning equipment discharging opening partly extend in the charging aperture of the utility model.And adjust the width in second air channel according to the difference of cleaning object, make wind speed in first, second air channel reach the floating velocity of impurity.So in when work, just have one air-flow and below last cleaning equipment discharging grain ration stream, pass the grain layer through first air inlet and enter into first air channel, the impurity that proportion is lighter is taken away, and the heavier material of proportion can continue to drop on the slide carriage.Another strand air-flow passes from the slide carriage bottom along slide carriage toward the grain layer that falls through second air inlet; The light impurity of just not cleaning out in the material is again taken away; Last clean grain is discharged from discharging opening, and the impurity in each air channel can be discharged in the entering air intake device from the outlet of air trapping cover under the drive of air-flow.