CN205684340U - A kind of combination type grain cleaning sieve - Google Patents

Abstract

The open a kind of combination type grain cleaning sieve of this utility model, including feed arrangement, it is characterized in that, described feed arrangement top is charging aperture, and bottom is discharging opening, discharging opening is long and narrow sealing, being provided with the charging wall of the sealing length direction along discharging opening on feed arrangement, charging wall is provided with equal flitch, equal flitch is up-narrow and down-wide, all being provided with some flow manifolds on flitch, flow manifold tilts to both sides from the middle part of charging wall.The grain that combination type grain cleaning sieve described in the utility model utilizes equal flitch to make to enter into feed arrangement is dispersed to both sides along flow manifold, so that grain is uniform on the vibrating, grain is avoided to be deposited in little range areas, improve screening efficiency, guarantee that vibrosieve plays maximum effect, the effectively foreign material in cleaned grain and dust, improves cleanliness factor and the yield of the grain finally given.

Description

A kind of combination type grain cleaning sieve

Technical field

This utility model relates to grain cleaning sieve technical field, particularly relates to a kind of combination type grain cleaning sieve.

Background technology

Along with grain, edible oil processing and the development of foodstuff preservation industry and technological progress, the cleaning quality to grain It is proposed higher requirement with unit interval treating capacity.Grain needs to carry out remove impurity before warehouse-in stores, and removes in grain Leaf, bran shell, the foreign material such as dust and flat grain, improve grain cleanliness factor, improve grain quality, it is simple to the storage of grain, it is to avoid grain Go bad due to foreign material, ensure the shelf-life of grain.Existing grain impurity removing device generally uses grain cleaning sieve, utilizes vibration Sieve carries out screening cleaning to grain, can produce substantial amounts of ash dust and gas along with the grain being sieving through together during screening cleaning Discharge, affect the cleanliness factor of grain, the most also pollute the environment, affect the healthy of staff.Existing grain is cleared up Sieve cannot effectively remove the impurity in raw grain, and the most miscellaneous and dust is difficult to separate from grain and settle, and grain percentage of impurity is high, grain Dust from flying in scale removal process, air pollution is serious.

Utility model content

The technical assignment of technical problem to be solved in the utility model and proposition is to improve prior art, it is provided that A kind of combination type grain cleaning sieve, solves the clear miscellaneous weak effect of grain cleaning sieve traditional in current technology, it is difficult to by impurity from grain Removing in food, grain percentage of impurity is high, course of processing dust from flying, the problem that air pollution is big.

For solving above technical problem, the technical solution of the utility model is:

A kind of combination type grain cleaning sieve, including frame, feed arrangement, screening body and dust arrester, it is characterised in that Described screening body is tilting gearing vibrosieve in frame, and the top of screening body offers charging aperture, on charging aperture Being connected to feed arrangement, the bottom of screening body is provided with impurities outlet and grain-export, and grain-export is provided with dedusting dress Putting, dust arrester includes blower fan and dedusting separating mechanism, and the air inlet of described blower fan is provided with dust absorbing air passage, dust absorbing air passage Covering at the grain-export of screening body, the air outlet of blower fan and the entrance of dedusting separating mechanism are direct-connected by flange arrangement, remove The outlet of dirt separating mechanism is connected with discharge with endless screw pipe.Combination type grain cleaning sieve described in the utility model uses high-performance big Area gravitational settling makes grain and weighs miscellaneous efficiently separating, and then utilizes blower fan directly by the grain of vibrosieve grain exit Lightweight and dust siphon away, and improve the cleanliness factor of grain, the most miscellaneous individually separate with dust and settle, and lightweight and dust are via wind Machine directly blasts dedusting separating mechanism and carries out dust removal operation, falls in discharge with endless screw pipe and be pushed out after dust impurity sedimentation, raw grain In impurity repeatedly cleared up, realize under the conditions of low power consuming by raw grain impurity reduce.This utility model simple in construction is tight Gather, can effectively reduce windage, thus the power of fan needed for reducing, the effectively save energy, without parts such as unnecessary adapting pipes, Thus without dead angle, it is not necessary to often clearing up, it is more convenient to use, and ensures production efficiency, can be prevented effectively from appearance in operation process The situation of dust from flying, reduces air pollution, improves working environment quality, and safeguard work personnel's is healthy.

Further, described blower fan uses centrifugal blower, and dedusting separating mechanism is made up of cyclone dust extractor and expansion chamber, Several cyclone dust extractors are arranged side by side, and the air outlet of the air intake vent of cyclone dust extractor and blower fan is directly connected to, expansion chamber It is connected to the bottom of cyclone dust extractor and is directly connected to the charging aperture of discharge with endless screw pipe, compact conformation, taking up room little, with Time ensure good dust removing effects, the most miscellaneous can efficiently separate with dust and settle.

Further, described discharge with endless screw pipe includes socket and screw propulsion rod, and screw propulsion rod is by being arranged on pipe The cylinder duplex bearing of one end, cantilevered support structure are arranged in socket, without support member on the Way out of socket, and the top of socket Arranging impurity feed hopper, impurity feed hopper is connected to the bottom of dedusting separating mechanism, and the port of export of socket is provided with lid door, Gai Men Being hinged on socket, the axial overlay length of the described helical blade on screw propulsion rod is less than the axial length of socket, spiral shell The impurity accumulation area without helical blade is formed between vane sheet and the outlet of socket.This utility model employing said structure can be effective When avoiding deslagging, dust flies upward, and the dust fallen from cyclone dust extractor is pushed to impurity heap under the impetus of screw propulsion rod Long-pending district, stores full impurity bonnet door at impurity accumulation area and just can be open, could be released by the impurity of accumulation, and the impurity of accumulation plays The effect of closure socket, it is to avoid cyclone dust extractor is in communication with the outside, it is to avoid the impurity fallen from cyclone dust extractor is directly from socket Go out, thus more effectively avoid dust to fly upward, reduce air pollution, can ensure that cyclone separator air pressure inside simultaneously Stability, improves the most miscellaneous, the elimination efficiency of dust.Traditional mode is that the two ends of screw propulsion rod use bearing carry out propping up Support, as being mixed into the flexible materials such as long rope in impurity, this kind of material can be wrapped on the axle of discharging opening bearing block, as the most clear Comprehend and make screw propulsion rod drive system resistance increase, even make drive belt slip, motor damage, use cantilever in this application Support realizes the single-ended support of screw propulsion rod, does not haves the situation that long rope is wound around, effectively protects motor, and extension device uses the longevity Life.

Further, described socket exit is also provided with whole socket is exported the suspended hood covered, suspended hood Lower end is slag-drip opening, and the upper end of suspended hood is provided with the inlet scoop connected with dust absorbing air passage, and impurity is when the outlet of socket is discharged There is part dust to fly upward air the most unavoidably thus cause air pollution, therefore suspended hood is set in exit and will fly upward sky Dust in gas is siphoned away by blower fan again so that dust is re-introduced in cyclone dust extractor settling, thus improves dedusting Effect, the cleanliness factor of safeguard work environment.

Further, described feed arrangement top is charging aperture, and bottom is discharging opening, and discharging opening is long and narrow sealing, It is provided with the charging wall of the sealing length direction along discharging opening on feed arrangement, charging wall is provided with equal flitch, on equal flitch Narrow lower width, equal flitch is provided with some flow manifolds, and flow manifold tilts to both sides from the middle part of charging wall.This practicality is new The grain that type utilizes equal flitch to make to enter into feed arrangement can disperse along flow manifold to both sides so that grain can be uniform Fall to vibrosieve from discharging opening, it is to avoid grain concentrates on to be formed in little range areas to be piled up, it is ensured that grain is distributed on whole On the screen cloth of individual vibrosieve, thus improve screening efficiency, it is ensured that vibrosieve plays maximum effect, miscellaneous in effective cleaned grain Thing and dust, improve the grain cleanliness factor finally given.

Further, described charging wall being also provided with cylinder manifold wide at the top and narrow at the bottom, cylinder manifold is positioned at the upper of equal flitch Side, cylinder manifold is provided with some dividing plates, and cylinder manifold is divided into some runners that confluxes so that grain can converge along cylinder manifold Collection shunts on equal flitch, it is ensured that grain can effectively shunt according to the flow manifold of equal flitch so that grain from During discharging opening output, energy is uniform on the vibrating, improves the uniform property of grain charging further.

Further, described equal flitch generally trapezoidal plate, Bending Processing shape is passed through in the left and right sides of trapezoidal plate Become hierarchic structure, every grade of ladder is flow manifold, the left and right sides of trapezoidal plate be fixed on charging wall on, trapezoidal plate with Split channel in being formed between charging wall, when the grain flow entering feed arrangement is less, grain is carried out along interior split channel Shunting, when grain flow is bigger, grain shunts along the flow manifold of interior split channel and outside simultaneously, it is ensured that grain exists Can be uniformly distributed during whereabouts, improve screening efficiency.

Further, on described feed arrangement, the top at charging wall is also provided with Anti-splash cover, and Anti-splash cover is overall On the curved charging aperture covering on feed arrangement, the inwall of Anti-splash cover is also provided with two pieces of baffle plates being parallel to each other, baffle plate The top being positioned at equal flitch and the sealing length direction being perpendicular to discharging opening, further ensure that grain is carrying such as feed arrangement Can effectively shunt according to equal flitch, it is ensured that grain is uniform on the vibrating.

Further, it is provided with Hermetical connecting structure, Hermetical connecting structure between described feed arrangement and screening body Including seam, screening body being provided with sieve nest charging aperture, sieve nest charging aperture open top also arranges seam on opening, The lower end of feed arrangement is connected with seam, and the inwall of seam is provided with fluid sealant, and linking is inserted in the lower end of feed arrangement Being in close contact in mouthful and with fluid sealant, described fluid sealant is the O-ring seal of cross-section hollow, and described seam includes fixing Plate and portable plate, fixed plate is connected to sieve nest charging aperture top and irremovable, and portable plate is bolted and enters at sieve nest Material mouth top is convenient loads and unloads, and portable plate and fixed plate surround the seam of laterally Guan Bi, and the lower hinge of sieve nest charging aperture is at sieve Selecting on body, the Hermetical connecting structure that this utility model is used makes feed arrangement easy to loading and unloading, safeguards screening machine at needs During internal portion, first being pulled down by portable plate, sieve nest charging aperture can overturn when feed arrangement is motionless, thus reaches quickly to tie up Protecting the purpose of screening internal body, the fluid sealant of seam inwall ensure that the sealing being connected between feed arrangement with screening body Property, it is prevented effectively from the dust of generation when cleaning riddler makees and, from leaking out pollution environment between feed arrangement and screening body, carries High workload environmental quality, safeguard work personnel's is healthy.The extruded deformation quantity of O-ring seal of cross-section hollow is big, resilience Property good, it can be ensured that feed arrangement can keep good connecing with the outer wall of feed arrangement by O-ring seal after seam inserting Touch, so that it is guaranteed that reach moderately good sealing effectiveness.

Further, described screening body is by shock-absorbing hinge device in frame, and shock-absorbing hinge makes to screen body When vibrating work, frame will not produce vibration, and bottom frame, returning apparatus has road wheel and adjustable lifting support bar, improves cleaning The mobile motility of sieve, guarantees to clear up stability when riddler makees simultaneously.

Compared with prior art, this utility model advantage is:

Combination type grain cleaning sieve described in the utility model effectively removes impurity when grain screening is cleared up and dust, carries The cleanliness factor of high grain, it is to avoid dust flies upward contaminated air, improves working environment quality, and the health of safeguard work personnel is good for, knot Structure is the compactest, and dedusting windage is little, and operating power consumption is low, energy-conserving and environment-protective, without parts such as unnecessary adapting pipes, thus without dead angle, Without often cleaning, it is more convenient to use, and ensures production efficiency；

This utility model utilizes the impurity accumulation area without helical blade and Gai Men to make cyclone dust extractor keep phase with extraneous To isolation, from cyclone dust extractor fall impurity directly will not go out air in the effect of air pressure inside and air-flow, have Effect avoids dust to fly upward, and reduces the dust pollution to air, can ensure that the stability of cyclone separator air pressure inside simultaneously, improves To the most miscellaneous, the elimination efficiency of dust, use cantilever support to realize the single-ended support of screw propulsion rod, do not have the shape that long rope is wound around Condition, effectively protects motor, extension device service life；

It is dispersed to both sides along flow manifold that this utility model utilizes equal flitch to make to enter into the grain of feed arrangement, So that grain is uniform on the vibrating, it is to avoid grain is deposited in little range areas, improve screening efficiency, it is ensured that vibrosieve Play maximum effect, the foreign material in effective cleaned grain and dust, realize dropping the impurity in grain under the conditions of low power consuming Low to less than 1% purpose, improve the cleanliness factor of grain and yield finally given.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of discharge with endless screw pipe；

Fig. 3 is the structural representation of feed arrangement；

Fig. 4 is the structural representation of homocline version；

Fig. 5 is the schematic diagram of Hermetical connecting structure between feed arrangement and sieve nest charging aperture；

Fig. 6 is the structural representation during upset of sieve nest charging aperture.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.

Disclosed in this utility model embodiment, a kind of combination type grain cleaning sieve, improves clear miscellaneous efficiency, can be by grain The most miscellaneous and dust be effectively separated and settle, improve cleanliness factor and the yield of grain, and be prevented effectively from operation process Dust from flying, improves working environment quality, and safeguard work personnel's is healthy.

As shown in Figures 1 to 6, a kind of combination type grain cleaning sieve, including frame 1, feed arrangement 2, screens body 3 and removes Dirt device, it is characterised in that described screening body 3 is by shock-absorbing hinge 8 tilting gearing vibrosieve in frame 1, frame 1 Bottom returning apparatus has road wheel 9 and adjustable lifting support bar 10, and road wheel 9 guarantees that clearing up sifter device has mobility flexibly, adjustable Lift supporting rod 10 guarantees to clear up and has good stability when sieving in working order, and the top of screening body 3 offers charging Mouthful, charging aperture is connected to feed arrangement 2, the bottom of screening body 3 is provided with impurities outlet and grain-export, on grain-export Being provided with dust arrester, dust arrester includes that blower fan 4 and dedusting separating mechanism 5, the air inlet of described blower fan 4 are provided with dust suction Air channel 41, dust absorbing air passage 41 covers at the grain-export of screening body 3, the air outlet of blower fan 4 and the entrance of dedusting separating mechanism 5 Direct-connected by flange arrangement, the outlet of dedusting separating mechanism 5 is connected with discharge with endless screw pipe 6, and blower fan 4 uses centrifugal blower, dedusting Separating mechanism 5 is made up of cyclone dust extractor and expansion chamber 51, and several cyclone dust extractors are arranged side by side, and cyclone dust extractor Air intake vent is directly connected to the air outlet of blower fan 4, expansion chamber 51 be connected to cyclone dust extractor bottom and with discharge with endless screw pipe 6 Charging aperture be directly connected to., compact conformation, good dedusting effect.

Discharge with endless screw pipe 6 includes socket 61 and screw propulsion rod 62, and screw propulsion rod 62 is by being arranged on socket 61 one end Duplex bearing, cantilevered support structure be arranged in socket 61, without support member on the Way out of socket 61, the top of socket 61 Arranging impurity feed hopper 63, impurity feed hopper 63 is connected to the bottom of dedusting separating mechanism 5, and the port of export of socket 61 is provided with lid Door 64, lid door 64 is hinged on socket 61, and the axial overlay length of the described helical blade on screw propulsion rod 62 is less than pipe The axial length of cylinder 61, forms the impurity accumulation area 65 without helical blade, socket 61 between the outlet of helical blade and socket 61 Exit is also provided with whole socket 61 is exported the suspended hood 66 covered, and the lower end of suspended hood 66 is slag-drip opening 67, suspended hood The upper end of 66 is provided with the inlet scoop 68 connected with dust absorbing air passage 41, and the miscellaneous dirt of accumulation is being released in the exit of discharge with endless screw pipe Time understand some dust and be mixed in air thus contaminated air, therefore inlet scoop is connected with dust absorbing air passage, effectively reduces sky Gas pollutes.

Feed arrangement 2 top is charging aperture, and bottom is discharging opening 21, and discharging opening 21 is long and narrow sealing, on feed arrangement 2 It is provided with the charging wall 22 of the sealing length direction along discharging opening 21, charging wall 22 is provided with equal flitch 23, on equal flitch 23 Narrow lower width, equal flitch 23 is provided with some flow manifolds 24, and flow manifold 24 tilts to both sides from the middle part of charging wall 22, In the present embodiment, equal flitch 23 generally trapezoidal plate, the left and right sides of trapezoidal plate forms ladder by Bending Processing and ties Structure, every grade of ladder is flow manifold 24, and the left and right sides of trapezoidal plate is fixed on charging wall 22, trapezoidal plate and charging wall Split channel in being formed between 22, when the cereal flow entering feed arrangement is less, corn shunts along interior split channel, When cereal flow is bigger, corn shunts along the flow manifold of interior split channel and outside multi-stage simultaneously, it is ensured that paddy Thing can be uniformly distributed when falling, and improves screening efficiency.

Being also provided with cylinder manifold 25 wide at the top and narrow at the bottom on charging wall 22, cylinder manifold 25 is positioned at the upside of equal flitch 23, confluxes It is provided with some dividing plates 26 on plate 25, cylinder manifold 25 is divided into some runners that confluxes, at charging wall 22 on feed arrangement 2 Top be also provided with Anti-splash cover 27, on the overall curved charging aperture covering on feed arrangement 2 of Anti-splash cover 27, Anti-splash cover Being also provided with two pieces of baffle plates being parallel to each other 28 on the inwall of 27, baffle plate 28 is positioned at the top of equal flitch 23 and is perpendicular to discharging The sealing length direction of mouth 21, this utility model utilizes cylinder manifold and baffle plate to make to be transported to the grain energy of feed arrangement effectively Be pooled to the top of equal flitch so that grain smoothly along equal flitch 4 carry out shunting uniform on the vibrating, protect further Card screening cleaning efficiency.

Dust easily leaks out from the junction of feed arrangement with sieve nest, and therefore this utility model is at feed arrangement 2 and sieve Select and between body 3, be provided with Hermetical connecting structure raising connection sealing, be prevented effectively from dust contaminated air, at the present embodiment In, Hermetical connecting structure includes seam 7, and screening body 3 is provided with sieve nest charging aperture 31, the bottom hinge of sieve nest charging aperture 31 It is connected on screening body 3 so that sieve nest charging aperture 31 is turning, such that it is able to safeguard the inside of screening body 3, sieve nest easily Charging aperture 31 open top also arranges seam 7 on opening, and the lower end of feed arrangement 2 is connected with seam 7, seam 7 It is provided with fluid sealant 74 on inwall, in seam 7 is inserted in the lower end of feed arrangement 2 and is in close contact with fluid sealant 74, described Fluid sealant 74 is the O-ring seal of cross-section hollow, or fluid sealant 74 uses foam cellular, latticed or high polymer elastic The rectangular strip structure that material is made, described seam 7 includes fixed plate 71 and portable plate 72, and fixed plate 71 is connected to sieve nest and enters Material mouth 31 top and irremovable, portable plate 72 is connected to the convenient handling in sieve nest charging aperture 31 top by bolt 73, movable Plate 72 and fixed plate 71 surround the seam 7 of laterally Guan Bi.

Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation should not regard For to restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to make some Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a combination type grain cleaning sieve, including frame (1), feed arrangement (2), screening body (3) and dust arrester, it is special Levying and be, described screening body (3) is tilting gearing vibrosieve in frame (1), and the top of screening body (3) offers Charging aperture, charging aperture is connected to feed arrangement (2), and the bottom of screening body (3) is provided with impurities outlet and grain-export, grain Being provided with dust arrester in food outlet, dust arrester includes blower fan (4) and dedusting separating mechanism (5), entering of described blower fan (4) Air port is provided with dust absorbing air passage (41), and dust absorbing air passage (41) covers at the grain-export of screening body (3), the air-out of blower fan (4) Mouth and the entrance of dedusting separating mechanism (5) are direct-connected by flange arrangement, the outlet of dedusting separating mechanism (5) and discharge with endless screw pipe (6) connect.

Combination type grain cleaning sieve the most according to claim 1, it is characterised in that described blower fan (4) uses centrifugal wind Machine, dedusting separating mechanism (5) is made up of cyclone dust extractor and expansion chamber (51), and several cyclone dust extractors are arranged side by side, and The air intake vent of cyclone dust extractor is directly connected to the air outlet of blower fan (4), and expansion chamber (51) is connected to the bottom of cyclone dust extractor And it is directly connected to the charging aperture of discharge with endless screw pipe (6).

Combination type grain cleaning sieve the most according to claim 2, it is characterised in that described discharge with endless screw pipe (6) includes Socket (61) and screw propulsion rod (62), screw propulsion rod (62) by being arranged on the duplex bearing of socket (61) one end, cantilever props up In support structure is arranged on socket (61), without support member on the Way out of socket (61), socket (61) be provided above impurity Feed hopper (63), impurity feed hopper (63) is connected to the bottom of dedusting separating mechanism (5), and the port of export of socket (61) is provided with lid Door (64), lid door (64) is hinged on socket (61), the described helical blade on screw propulsion rod (62) axially cover length Degree, less than the axial length of socket (61), forms the impurity without helical blade and piles up between the outlet of helical blade and socket (61) District (65).

Combination type grain cleaning sieve the most according to claim 3, it is characterised in that described socket (61) exit also sets Having put and whole socket (61) is exported the suspended hood (66) covered, the lower end of suspended hood (66) is slag-drip opening (67), suspended hood (66) upper end is provided with the inlet scoop (68) connected with dust absorbing air passage (41).

Combination type grain cleaning sieve the most according to claim 1, it is characterised in that described feed arrangement (2) top is Charging aperture, bottom is discharging opening (21), and discharging opening (21) is long and narrow sealing, and feed arrangement is provided with along discharging opening on (2) (21) the charging wall (22) of sealing length direction, charging wall (22) is provided with equal flitch (23), equal flitch (23) upper narrow under Width, equal flitch (23) is provided with some flow manifolds (24), and flow manifold (24) is from feeding the middle part of wall (22) to both sides Tilt.

Combination type grain cleaning sieve the most according to claim 5, it is characterised in that also set up on described charging wall (22) Cylinder manifold wide at the top and narrow at the bottom (25), cylinder manifold (25) is positioned at the upside of equal flitch (23), cylinder manifold (25) is provided with some Dividing plate (26), cylinder manifold (25) is divided into some runners that confluxes.

Combination type grain cleaning sieve the most according to claim 5, it is characterised in that described equal flitch (23) generally ladder Shape thin plate, the left and right sides of trapezoidal plate forms hierarchic structure by Bending Processing, and every grade of ladder is flow manifold (24), ladder The left and right sides of shape thin plate is fixed in charging wall (22), split channel in being formed between trapezoidal plate and charging wall (22).

Combination type grain cleaning sieve the most according to claim 5, it is characterised in that entering on described feed arrangement (2) The top of material wall (22) is also provided with Anti-splash cover (27), and Anti-splash cover (27) entirety is curved covers on entering of feed arrangement (2) On material mouth, the inwall of Anti-splash cover (27) being also provided with two pieces of baffle plates being parallel to each other (28), baffle plate (28) is positioned at equal flitch (23) top and be perpendicular to the sealing length direction of discharging opening (21).

Combination type grain cleaning sieve the most according to claim 1, it is characterised in that described feed arrangement (2) and screening Body is provided with Hermetical connecting structure between (3), and Hermetical connecting structure includes seam (7), and screening body (3) is provided with sieve Body charging aperture (31), (31) open top of sieve nest charging aperture also arranges seam (7) on opening, the lower end of feed arrangement (2) Being connected with seam (7), the inwall of seam (7) is provided with fluid sealant (74), seam is inserted in the lower end of feed arrangement (2) (7) being in close contact in and with fluid sealant (74), described fluid sealant (74) is the O-ring seal of cross-section hollow, described seam (7) including fixed plate (71) and portable plate (72), fixed plate (71) is connected to sieve nest charging aperture (31) top and irremovable, Portable plate (72) is connected to the convenient handling in sieve nest charging aperture (31) top, portable plate (72) and fixed plate (71) by bolt (73) Surrounding the seam (7) of laterally Guan Bi, the lower hinge of sieve nest charging aperture (31) is in screening body (3).

Combination type grain cleaning sieve the most according to claim 1, it is characterised in that described screening body (3) is by subtracting Shake hinge (8) device is in frame (1), and frame (1) bottom returning apparatus has road wheel (9) and adjustable lifting support bar (10).