CN105880167A - Combined type grain cleaning sieve - Google Patents

Abstract

The invention discloses a combined type grain cleaning sieve. The combined type grain cleaning sieve comprises a feeding device. The combined type grain cleaning sieve is characterized in that a feed port is formed in the upper portion of the feeding device, a discharge port is formed in the lower portion of the feeding device, the discharge port is a long and narrow seam, the feeding device is provided with a feeding wall in the seam length direction of the discharge port, the feeding wall is provided with a material uniformizing plate, the upper part of the material uniformizing plate is narrow, the lower part of the material uniformizing plate is wide, and the material uniformizing plate is provided with a plurality of flow manifolds which incline towards the two sides from the middle portion of the feeding wall. According to the combined type grain cleaning sieve, grain entering the feeding device is evenly spread to the two sides along the flow manifolds through the material uniformizing plate, and therefore the grain is evenly distributed on a vibration sieve, the situation that the grain is accumulated in a small scale area is avoided, the sieving efficiency is improved, it is ensured that the vibration sieve plays a maximum role, sundries and dust in the grain can be effectively cleaned away, and the cleanliness and yield of the finally obtained grain are improved.

Description

A kind of combination type grain cleaning sieve

Technical field

The present invention relates to grain cleaning sieve technical field, particularly relate 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 matter to grain Amount and unit interval treating capacity are proposed higher requirement.Grain needs to carry out remove impurity before warehouse-in stores, and removes Leaf in grain, bran shell, the foreign material such as dust and flat grain, improve grain cleanliness factor, improve grain quality, it is simple to grain The storage of food, it is to avoid grain goes bad due to foreign material, ensures the shelf-life of grain.Existing grain impurity removing device leads to Frequently with grain cleaning sieve, utilize vibrosieve that grain carries out screening cleaning, can produce during screening cleaning Substantial amounts of ash dust and gas is together discharged along with the grain being sieving through, and affects the cleanliness factor of grain, the most also pollutes the environment, Affect the healthy of staff.Existing grain cleaning sieve cannot effectively remove the impurity in raw grain, the most miscellaneous and Dust is difficult to separate from grain and settle, and grain percentage of impurity is high, dust from flying in grain scale removal process, and air is dirty Dye is serious.

Summary of the invention

The technical assignment of the technical problem to be solved and proposition is to improve prior art, it is provided that one Plant combination type grain cleaning sieve, solve the clear miscellaneous weak effect of grain cleaning sieve traditional in current technology, it is difficult to by impurity Removing from grain, 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 scheme is that

A kind of combination type grain cleaning sieve, including frame, feed arrangement, screening body and dust arrester, its feature Being, described screening body is tilting gearing vibrosieve in frame, and the top of screening body offers charging Mouthful, charging aperture is connected to feed arrangement, the bottom of screening body is provided with impurities outlet and grain-export, grain Being provided with dust arrester in outlet, dust arrester includes blower fan and dedusting separating mechanism, the air inlet of described blower fan Being provided with dust absorbing air passage, dust absorbing air passage covers at the grain-export of screening body, and the air outlet of blower fan separates with dedusting The entrance of mechanism is direct-connected by flange arrangement, and the outlet of dedusting separating mechanism is connected with discharge with endless screw pipe.Institute of the present invention The combination type grain cleaning sieve stated uses high-performance large area gravitational settling make grain and weigh miscellaneous efficiently separating, then Utilize blower fan directly the lightweight in the grain of vibrosieve grain exit and dust to be siphoned away, improve the cleanliness factor of grain, The most miscellaneous individually separating with dust and settle, lightweight and dust directly blast dedusting separating mechanism via blower fan to be carried out Dust removal operation, falls into after dust impurity sedimentation in discharge with endless screw pipe and is pushed out, and the impurity in raw grain is repeatedly cleared up, Realize reducing the impurity in raw grain under the conditions of low power consuming.Present configuration is the compactest, 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, Without often cleaning, it is more convenient to use, and ensures production efficiency, can be prevented effectively from and dust occur in operation process The situation flown upward, 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 by cyclone dust extractor and expansion chamber group Becoming, 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 directly connects Connecing, expansion chamber is connected to the bottom of cyclone dust extractor and is directly connected to the charging aperture of discharge with endless screw pipe, and structure is tight Gather, take up room little, ensure good dust removing effects simultaneously, 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 The duplex bearing of socket one end, cantilevered support structure are arranged in socket, without support member on the Way out of socket, Socket be provided above impurity feed hopper, impurity feed hopper is connected to the bottom of dedusting separating mechanism, the outlet of socket End be provided with lid door, lid door hinge is connected on socket, the described helical blade on screw propulsion rod axially cover length Degree, less than the axial length of socket, forms the impurity accumulation area without helical blade between helical blade and the outlet of socket. When the present invention uses said structure can be prevented effectively from deslagging, dust flies upward, and the dust fallen from cyclone dust extractor is at spiral It is pushed to impurity accumulation area under the impetus of pushing ram, stores full impurity bonnet door at impurity accumulation area and just can be open, Could be released by the impurity of accumulation, the impurity of accumulation plays the effect of closure socket, it is to avoid cyclone dust extractor is with extraneous Connection, it is to avoid impurity directly the going out from socket fallen from cyclone dust extractor, thus more effectively avoid dust to fly Raise, reduce air pollution, can ensure that the stability of cyclone separator air pressure inside simultaneously, improve the most miscellaneous, dust Elimination efficiency.Traditional mode is to use bearing to be supported at the two ends of screw propulsion rod, as mixed in impurity Entering the flexible materials such as long rope, this kind of material can be wrapped on the axle of discharging opening bearing block, as cleaning can make spiral shell not in time Rotation pushing ram drive system resistance increases, and even makes drive belt slip, motor damage, uses 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 prolongation sets Standby service life.

Further, described socket exit is also provided with whole socket is exported the suspended hood covered, suspended hood Lower end be slag-drip opening, the upper end of suspended hood is provided with the inlet scoop connected with dust absorbing air passage, impurity going out from socket Mouth has part dust to fly upward air the most unavoidably when discharging thus causes air pollution, therefore arranges suction in exit The dust flown upward in air is siphoned away by fan housing again by blower fan so that dust is re-introduced in cyclone dust extractor entering Row sedimentation, thus improve dust removing effects, 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 seam Mouthful, feed arrangement is provided with the charging wall of the sealing length direction along discharging opening, charging wall is provided with equal flitch, All flitch are up-narrow and down-wide, and equal flitch is provided with some flow manifolds, and flow manifold is from feeding the middle part of wall to two Roll tiltedly.The grain that the present invention utilizes equal flitch to make to enter into feed arrangement can disperse along flow manifold to both sides, Grain is made to fall to vibrosieve from discharging opening uniformly, it is to avoid grain is formed in concentrating on little range areas Pile up, it is ensured that grain is distributed on the screen cloth of whole vibrosieve, thus improves screening efficiency, it is ensured that vibrosieve plays Maximum effect, the foreign material in effective cleaned grain 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 equal flitch Upside, cylinder manifold is provided with some dividing plates, cylinder manifold is divided into some runners that confluxes so that grain energy It is pooled on equal flitch shunt along cylinder manifold, it is ensured that grain can effectively be carried out according to the flow manifold of equal flitch Shunting so that grain energy when discharging opening exports is uniform on the vibrating, improves the uniform property of grain charging further.

Further, described equal flitch generally trapezoidal plate, Bending Processing is passed through in the left and right sides of trapezoidal plate Forming hierarchic structure, every grade of ladder is flow manifold, and the left and right sides of trapezoidal plate is fixed on charging wall, ladder Split channel in being formed between shape thin plate and charging wall, when the grain flow entering feed arrangement is less, grain edge Interior split channel shunts, and when grain flow is bigger, grain is same along the flow manifold in interior split channel and outside Shi Jinhang shunts, it is ensured that grain can be uniformly distributed when falling, and improves screening efficiency.

Further, on described feed arrangement, the top at charging wall is also provided with Anti-splash cover, and Anti-splash cover is whole On the curved charging aperture covering on feed arrangement of body, the inwall of Anti-splash cover is also provided with two pieces of gears being parallel to each other Plate, baffle plate is positioned at the top of equal flitch and is perpendicular to the sealing length direction of discharging opening, further ensuring that grain exists Carry feed arrangement such as 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 between described feed arrangement and screening body, is tightly connected knot Structure includes seam, and screening body is provided with sieve nest charging aperture, and sieve nest charging aperture open top also sets on opening Putting seam, the lower end of feed arrangement is connected with seam, and the inwall of seam is provided with fluid sealant, charging dress Being in close contact in seam is inserted in the lower end put and with fluid sealant, described fluid sealant is the O-ring seal of cross-section hollow, Described seam includes fixed plate and portable plate, and fixed plate is connected to sieve nest charging aperture top and irremovable, Portable plate is bolted the convenient handling at sieve nest charging aperture top, and portable plate and fixed plate surround horizontal Guan Bi Seam, the lower hinge of sieve nest charging aperture is on screening body, and Hermetical connecting structure of the present invention makes Feed arrangement is easy to loading and unloading, when screening internal body safeguarded by needs, is first pulled down by portable plate, and sieve nest charging aperture can Overturn when feed arrangement is motionless, thus reach the purpose of Fast-Maintenance screening internal body, in seam The fluid sealant of wall ensure that the sealing that is connected between feed arrangement and screening body, is prevented effectively from and clears up riddler when making The dust produced leaks out pollution environment between feed arrangement and screening body, improves working environment quality, protects Barrier staff's is healthy.The extruded deformation quantity of O-ring seal of cross-section hollow is big, and resilience is good, it is possible to Guarantee that feed arrangement can keep good contacting with the outer wall of feed arrangement by O-ring seal after inserting seam, from And guarantee to reach moderately good sealing effectiveness.

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

Compared with prior art, the invention has the advantages that:

Combination type grain cleaning sieve of the present invention effectively removes impurity when grain screening is cleared up and dust, improves The cleanliness factor of grain, it is to avoid dust flies upward contaminated air, improves working environment quality, the health of safeguard work personnel Strong, simple and compact for structure, dedusting windage is little, and operating power consumption is low, energy-conserving and environment-protective, without portions such as unnecessary adapting pipes Part, thus without dead angle, it is not necessary to often clearing up, it is more convenient to use, and ensures production efficiency；

The present invention utilizes the impurity accumulation area without helical blade to make cyclone dust extractor keep relative with extraneous with Gai Men Isolation, directly will not go out air in the effect of air pressure inside and air-flow from the impurity of cyclone dust extractor whereabouts, It is prevented effectively from dust to fly upward, reduces the dust pollution to air, can ensure that the steady of cyclone separator air pressure inside simultaneously Qualitative, improve the most miscellaneous, the elimination efficiency of dust, use cantilever support to realize the single-ended support of screw propulsion rod, no There will be the situation that long rope is wound around, effectively protect motor, extension device service life；

It is dispersed to both sides along flow manifold that the present invention utilizes equal flitch to make to enter into the grain of feed arrangement, from And make grain uniform on the vibrating, it is to avoid grain is deposited in little range areas, improves screening efficiency, it is ensured that Vibrosieve plays maximum effect, the foreign material in effective cleaned grain and dust, realizes grain under the conditions of low power consuming Impurity in food is reduced to the purpose of less than 1%, improves cleanliness factor and the yield of the grain finally given.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention；

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 the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, It is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole realities Execute example.Based on the embodiment in the present invention, 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 protection of the invention.

Disclosed in the embodiment of the present invention, a kind of combination type grain cleaning sieve, improves clear miscellaneous efficiency, can be by grain The most miscellaneous and dust is effectively separated and settles, and improves cleanliness factor and the yield of grain, and is prevented effectively from operation Dust from flying in journey, 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, screening machine Body 3 and dust arrester, it is characterised in that described screening body 3 passes through shock-absorbing hinge 8 tilting gearing in frame Vibrosieve on 1, bottom frame 1, returning apparatus has road wheel 9 and adjustable lifting support bar 10, and road wheel 9 guarantees Cleaning sifter device have mobility flexibly, adjustable lifting support bar 10 guarantee to clear up have when sieving in working order good Stability, the top of screening body 3 offers charging aperture, charging aperture is connected to feed arrangement 2, screens body 3 Bottom be provided with impurities outlet and grain-export, grain-export is provided with dust arrester, dust arrester includes wind Machine 4 and dedusting separating mechanism 5, the air inlet of described blower fan 4 is provided with dust absorbing air passage 41, dust absorbing air passage 41 Covering at the grain-export of screening body 3, the air outlet of blower fan 4 passes through flange with the entrance of dedusting separating mechanism 5 Structure is direct-connected, and the outlet of dedusting separating mechanism 5 is connected with discharge with endless screw pipe 6, and blower fan 4 uses centrifugal blower, removes Dirt 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 revolve The air intake vent of wind cleaner unit 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., 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 The duplex bearing of one end, cantilevered support structure are arranged in 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, The port of export of socket 61 is provided with lid door 64, and lid door 64 is hinged on socket 61, described screw propulsion rod 62 On the axial overlay length of helical blade less than the axial length of socket 61, the outlet of helical blade and socket 61 Between formed without the impurity accumulation area 65 of helical blade, socket 61 exit is also provided with exporting whole socket 61 The suspended hood 66 covered, the lower end of suspended hood 66 is slag-drip opening 67, and the upper end of suspended hood 66 is provided with and dust suction wind The inlet scoop 68 of road 41 connection, some dust is understood when releasing the miscellaneous dirt of accumulation in the exit of discharge with endless screw pipe It is mixed in air thus contaminated air, therefore inlet scoop is connected with dust absorbing air passage, effectively reduce air pollution.

Feed arrangement 2 top is charging aperture, and bottom is discharging opening 21, and discharging opening 21 is long and narrow sealing, charging It is provided with the charging wall 22 of the sealing length direction along discharging opening 21 on device 2, charging wall 22 is provided with homocline Plate 23, equal flitch 23 is up-narrow and down-wide, and equal flitch 23 is provided with some flow manifolds 24, flow manifold 24 Tilt to both sides from the middle part of charging wall 22, in the present embodiment, equal flitch 23 generally trapezoidal plate, trapezoidal The left and right sides of thin plate forms hierarchic structure by Bending Processing, and every grade of ladder is flow manifold 24, trapezoidal plate The left and right sides be fixed on charging wall 22 on, trapezoidal plate and charging wall 22 between formed in split channel, entering Enter the cereal flow of feed arrangement less time, 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 corn is energy when falling It is uniformly distributed, 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, It is provided with some dividing plates 26 on cylinder manifold 25, cylinder manifold 25 is divided into some runners that confluxes, feed arrangement On 2, the top at charging wall 22 is also provided with Anti-splash cover 27, and overall curved the covering on of Anti-splash cover 27 feeds dress Put on the charging aperture of 2, the inwall of Anti-splash cover 27 is also provided with two pieces of baffle plates being parallel to each other 28, baffle plate 28 Be positioned at the top of equal flitch 23 and be perpendicular to the sealing length direction of discharging opening 21, the present invention utilize cylinder manifold and Baffle plate makes the grain being transported to feed arrangement can effectively be pooled to the top of equal flitch, so that grain is smooth Along equal flitch 4 carry out shunting uniform on the vibrating, be further ensured that screening cleaning efficiency.

Dust easily leaks out from the junction of feed arrangement with sieve nest, and therefore the present invention is in feed arrangement 2 and screening It is provided with Hermetical connecting structure between body 3 and improves connection sealing, be prevented effectively from dust contaminated air, in this reality Executing in example, Hermetical connecting structure includes seam 7, and screening body 3 is provided with sieve nest charging aperture 31, and sieve nest enters The lower hinge of material mouth 31 is on screening body 3 so that sieve nest charging aperture 31 is turning, such that it is able to easily Safeguarding the inside of screening body 3, sieve nest charging aperture 31 open top also arranges seam 7 on opening, charging dress Put the lower end of 2 to be connected with seam 7, the inwall of seam 7 is provided with fluid sealant 8, feed arrangement 2 times In end inserts seam 7 and being in close contact with fluid sealant 8, described fluid sealant 8 is the O-ring seal of cross-section hollow, Or fluid sealant 8 uses the rectangular strip structure that foam cellular, latticed or macromolecular material are made, institute The seam 7 stated includes fixed plate 71 and portable plate 72, and fixed plate 71 is connected to sieve nest charging aperture 31 top also And irremovable, portable plate 72 is connected to the convenient handling in sieve nest charging aperture 31 top, portable plate by bolt 73 72 surround the seam 7 of laterally Guan Bi with fixed plate 71.

Below it is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred implementation is not construed as Limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For this skill For the those of ordinary skill in art field, without departing from the spirit and scope of the present invention, it is also possible to make some changing Entering and retouch, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (10)

1. a combination type grain cleaning sieve, including frame (1), feed arrangement (2), screening body (3) And dust arrester, it is characterised in that described screening body (3) is tilting gearing vibration in frame (1) Sieve, the top of screening body (3) offers charging aperture, charging aperture is connected to feed arrangement (2), screening machine The bottom of body (3) is provided with impurities outlet and grain-export, and grain-export is provided with dust arrester, dust arrester Including blower fan (4) and dedusting separating mechanism (5), the air inlet of described blower fan (4) is provided with dust absorbing air passage (41), Dust absorbing air passage (41) covers at the grain-export of screening body (3), and the air outlet of blower fan (4) separates with dedusting The entrance of mechanism (5) is 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) Using centrifugal blower, dedusting separating mechanism (5) is made up of cyclone dust extractor and expansion chamber (51), several whirlwind Cleaner unit is arranged side by side, and the air outlet of the air intake vent of cyclone dust extractor and blower fan (4) is directly connected to, expansion chamber (51) it is connected to the bottom of cyclone dust extractor and 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) including socket (61) and screw propulsion rod (62), screw propulsion rod (62) is by being arranged on socket (61) The duplex bearing of one end, cantilevered support structure are arranged in socket (61), without propping up on the Way out of socket (61) Support part part, socket (61) be provided above impurity feed hopper (63), impurity feed hopper (63) is connected to dedusting The bottom of separating mechanism (5), the port of export of socket (61) is provided with lid door (64), and lid door (64) is hinged on On socket (61), the axial overlay length of the described helical blade on screw propulsion rod (62) is less than socket (61) Axial length, formed without the impurity accumulation area (65) of helical blade between the outlet of helical blade and socket (61).

Combination type grain cleaning sieve the most according to claim 3, it is characterised in that described socket (61) Exit is also provided with whole socket (61) is exported the suspended hood (66) covered, the lower end of suspended hood (66) For slag-drip opening (67), the upper end of suspended hood (66) 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, and bottom is discharging opening (21), and discharging opening (21) is long and narrow sealing, feed arrangement (2) On be provided with the charging wall (22) of the sealing length direction along discharging opening (21), charging wall (22) is provided with All flitch (23), equal flitch (23) is up-narrow and down-wide, and equal flitch (23) is provided with some flow manifolds (24), Flow manifold (24) tilts to both sides from the middle part of charging wall (22).

Combination type grain cleaning sieve the most according to claim 5, it is characterised in that described charging wall (22) On be also provided with cylinder manifold (25) wide at the top and narrow at the bottom, cylinder manifold (25) is positioned at the upside of equal flitch (23), converge It is provided with some dividing plates (26) on stream plate (25), 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 trapezoidal plate, the left and right sides of trapezoidal plate forms hierarchic structure by Bending Processing, and every grade of ladder is Flow manifold (24), the left and right sides of trapezoidal plate is fixed in charging wall (22), trapezoidal plate and charging wall (22) split channel in being formed between.

Combination type grain cleaning sieve the most according to claim 5, it is characterised in that described feed arrangement (2) On charging wall (22) top be also provided with Anti-splash cover (27), the overall curved cover of Anti-splash cover (27) On the charging aperture of feed arrangement (2), the inwall of Anti-splash cover (27) is also provided with two pieces of gears being parallel to each other Plate (28), baffle plate (28) is positioned at the top of equal flitch (23) and to be perpendicular to the sealing of discharging opening (21) long Degree direction.

Combination type grain cleaning sieve the most according to claim 1, it is characterised in that described feed arrangement (2) And being provided with Hermetical connecting structure between screening body (3), Hermetical connecting structure includes seam (7), screening Being provided with sieve nest charging aperture (31) on body (3), (31) open top of sieve nest charging aperture is also arranged on opening Seam (7), the lower end of feed arrangement (2) is connected with seam (7), and the inwall of seam (7) sets Having put fluid sealant (8), it is interior and tight with fluid sealant (8) that seam (7) is inserted in the lower end of feed arrangement (2) Contact, described fluid sealant (8) is the O-ring seal of cross-section hollow, and described seam (7) includes fixed plate And portable plate (72) (71), 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) by bolt (73) With the seam (7) that fixed plate (71) surrounds laterally Guan Bi, the lower hinge of sieve nest charging aperture (31) is in screening On body (3).

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