Background technology
The paddy of growth and maturity roughly needs through harvesting, threshing (directly, seed separate) and screening, and it is standby to deposit the warehouse in.Take off, be mixed with field trashes such as disconnected, broken stem stalk, clever shell and dust in the isolated emersion object through sheller unit, be referred to as maslin.The function of grain cleaning machine is exactly that the useful seed in the maslin is separated, outside other assorted excess discharge machine, with the paddy seed that obtains cleaning.This device that cereal kernel is separated from maslin is grain cleaner.
The grain cleaning machine of market widespread usage is the so-called wind of employing mostly, sieves compound cleaner now, exactly methods such as plane screening, air flow cleaning is combined on the machine by certain technological process.Existing wind, sieve cleaning plant by up and down sieve (secondary sieve), tail sheet, shuttle board, suspension rod, pole, each cover quadrangular mechanism, one of two sides overlap the crank linkage, overlap bearing and bearing block more, screen frame (unit), fan, etc. form; Maslin falls into through shuttle board and does not stop reciprocating top sieve, cereal seesaws and cast and decline movement up and down repeatedly in that the compass screen surface short distance is liftoff, the air-flow of fan blows out fine foreign matters such as frivolous broken stem stalk, clever shell and dust outside the machine simultaneously, makes maslin two-story valley seed, the assorted surplus initial gross separation that obtains; The seed of top sieve and the assorted excess of failing to separate fall into together reciprocating sieve down in the lump again, and the operation principle of following sieve is similar to top sieve, top sieve fail isolated assorted excess warp down sieve further sieve, blow; Assorted surplus need such as the long shoot bar that is not blown repeat to clean through the return extremely upper and lower sieve of another conveying mechanism again, thus the paddy seed that obtains cleaning.This grain cleaner complex structure, huge, it is big to take up room; What the realization of its screening function was mainly leaned on is the reciprocating motion of compass screen surface, power loss big (effect is than low).
Summary of the invention
The technical problem to be solved in the present invention is, the defective at prior art exists proposes a kind of spiral belt piece type multi-gas field drum screen grain cleaning plant, have to clean effective, high efficiency, energy-conservation characteristics, and simple in structure, in light weight.
Technical scheme of the present invention is, described spiral belt piece type multi-gas field drum screen grain cleaning plant has the cylinder cylinder of a hollow, hollow shaft is equipped with at these cylinder cylinder two ends respectively, and described cylinder cylinder and hollow shaft are concentrics, and an end of cylinder cylinder is a feed end and the other end is the air-flow upstream end; The inside spin strap is along described cylinder cylinder inner periphery and axially continuous the layout; Barrel between the terminal and cylinder cylinder air-flow upstream end port of inside spin strap is provided with the one-level drum sieve, and being set with one in the periphery of this one-level drum sieve has the coaxial secondary drum sieve of certain radial space with the one-level drum sieve; The feed end of cylinder cylinder is provided with the chute feeder that is not arranged in the inside spin strap top of this cylinder with this rollers running and discharging opening.
Below the present invention made further specify.
Referring to Fig. 1, spiral belt piece type multi-gas field drum screen grain cleaning plant described in the utility model has the cylinder cylinder 3 of hollow, hollow shaft 2,11 is equipped with at these cylinder cylinder 3 two ends respectively, and described cylinder cylinder 3 and hollow shaft the 2, the 11st, concentric, an end of cylinder cylinder 3 is a feed end 12 and other end is an air-flow upstream end 13; Inside spin strap 4 is arranged continuously along described cylinder cylinder 3 inner peripherys and axial degree; Barrel between terminal and cylinder cylinder air-flow upstream end 13 ports of inside spin strap 4 is provided with one-level drum sieve 7, and being set with one in the periphery of this one-level drum sieve 7 has the coaxial secondary drum sieve 6 of certain radial space with one-level drum sieve 7; The feed end 12 of cylinder cylinder 3 is provided with the feed well 1 that is not arranged in the inside spin strap top of this cylinder with this rollers running and discharging opening.
Referring to Fig. 1, be provided with the wind-guiding bowl 5 that is positioned at this end center in the air-flow upstream end 13 of described cylinder cylinder 3.
Referring to Fig. 1 and Fig. 2, described secondary drum sieve 6 is provided with impurities removal plate and uncovered 10 near a side of inside spin strap 4.
Among the present invention, except that feed well 1, other members all connect as a whole with the cylinder cylinder, and all circle shape structures all with two hollow shaft concentrics (except the feed well), and in the running with hollow shaft 2 rotations.The effect of the inside spin strap 4 in the cylinder cylinder 3 is that it can offer cereal (be similar to manually and winnow), can carry cereal again; The uncovered end face of the feed end 12 of cylinder cylinder 3 is the cereal inlet, is again the outlet of surplus foreign material simultaneously; Be air flow inlet in the hollow shaft of the other end.
The technical solution of the present invention technical process is achieved in that as shown in Figure 1, the spiral belt piece top of maslin in feed well 1 falls into the cylinder cylinder 3 that does not stop rotating, because this cylinder inner periphery has evenly been arranged inside spin strap 4, the inside spin strap is constantly offered cereal and is left, make maslin form thin logistics layer, fan airflow blows and is offering on the thin fluid layer of skyborne cereal simultaneously, because the difference of proportion, frivolous broken stem stalk, (being the end face of feed end 12) is blown outside the cylinder fine foreign matters such as grain husk shell and dust from left side shown in Figure 1, heavy paddy seed and surplusly fall into cylindrical shell again and continued to carry forward and offer only assorted by the inside spin strap, make paddy seed and assorted surplus constantly separated (the removal of impurities function that this process is equivalent to traditional rural area windmill) in the maslin, repeated multiple times like this, cereal just separates totallyer before entering screening process; Cleaner cereal is further continued to carry forward by spiral belt piece, until entering one-level drum sieve 7 and secondary drum sieve 6, when drum sieve screens cereal, the air-flow of fan still unsegregated frivolous assorted excess blows out outside the cylinder, make the assorted excess in the cereal obtain further separating, thus the paddy seed that is more cleaned.
The effect of wind-guiding bowl 5 is that the air-flow branch that fan enters in the cylinder is done the different directions motion among Fig. 1, forms a plurality of gas field, all has for cleaning the air-flow of usefulness to guarantee the different process zone.
As known from the above, the present invention is a kind of spiral belt piece type multi-gas field drum screen grain cleaning plant, and it is having following advantage with respect to existing reciprocating type horizontal screen screening device aspect the technical performance:
(1) increased to offer together before hole sizer and add air-flow and clean technology, maslin just separates totallyer before entering screening process; Then, cereal is continuously raised screening again at work cylinder compass screen surface, the compass screen surface high efficiency, and power loss is little, has improved whole work efficiency and power (energy) utilization rate;
(2) technical solution of the present invention has adopted the cylinder compass screen surface, and sieve aperture evenly arranges at circumference, and cylinder constantly rotates, and is continuously raised screening at the cereal of working face, so sieve is continuously effectively to work; And the cereal of compass screen surface of flatness and reciprocator when compass screen surface moves back and forth only when the motion of " past " by useful effect, and cereal is very little by useful effect when the motion of " answering ", this is because cereal is into two to go on foot backwards or advance three step backwards in the motion of compass screen surface, the 50%-60% side-to-side movement of only having an appointment is an effective exercise, so its merit, imitate lower, power (the both energy) waste is bigger, and cereal is just thrown a little at compass screen surface, effectively do not raised, air-flow is less to frivolous assorted surplus centrifugation; To make the required power of circular motion (two kinematic pairs) many greatly than driving cylinder for the power that in addition drives upper and lower two sieves reciprocating (having 11 kinematic pairs).
(2) this apparatus structure is simple, in light weight.Because tail sheet and return conveying mechanism that apparatus of the present invention are can be disposable clean with grain cleaning, saved existing cleaner, simple in structure, high efficiency is weighed light by the shared complete machine weight of specific yield.Moreover the sectional area of the required construction material of sectional area ratio drum sieve of the required construction material of reciprocating screen is wanted big (being that the moment of inertia is big), so the weight of this device in light weight many than reciprocating screen.
(3) this device not only can be used for cleaning, separating maslin, also can be used for screening the discrepant mixing object of other proportion.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 be among Fig. 1 A-A to structural representation.
In the drawings:
The 1-feed well, 2, the 11-hollow shaft, 3-cylinder cylinder,
4-inside spin strap, 5-wind-guiding bowl, 6-secondary drum sieve,
7-one-level drum sieve, 8-cylinder lining spoke, 9-cylinder lining muscle,
10-impurities removal plate and uncovered, 12-feed end, 13-air-flow upstream end.