CN206763322U - Guipure puts down back sieve - Google Patents

Abstract

Guipure equals back sieve and corresponding grain impurity-removing method, and traditional rotary flat sieve is big miscellaneous because reasons in structure can not be removed, it is necessary to and chain type receiving sieve or roller receiving sieve are used cooperatively.Treating capacity is relatively low.Equipment of the present utility model includes screen frame (unit)（1）, motor connects sprocket wheel by transmission mechanism（2）, the axle of described sprocket wheel is hinged on screen box（3）On, the sprocket wheel described in two pairs passes through chain respectively（4）Connect, described screen box, one group of metal sieve are lifted with described screen frame (unit)（6）Conveyer belt is arranged in, and by described chain drive, equipped with the delivery board being connected with described screen box between upper and lower two layers of described conveyer belt（9）, described screen box connects flat back rotation mechanism（10）, described conveyer belt lower section is equipped with collection grain bucket（11）, described collection grain bucket is connected with described screen box.The utility model is large, medium and small miscellaneous for being removed before conveying grain into storehouse.

Description

Guipure puts down back sieve

Technical field：

It the utility model is related to a kind of sorting machine, the removal of impurities machinery of particularly a kind of guipure.

Background technology：

The material of feeding is concentrated in the rotary flat sieve course of work in charging aperture, under sieve nest circular motion effect, plane is returned Turn sieve to be evenly distributed on whole compass screen surface width, and produce automatic classification.So that the less material of granularity is fast below the bed of material Speed sieving, and the larger material of granularity is then to discharging end motion above.In moving process, due to the jump that do not stir and stand It is dynamic, thus wherein less particle is close to compass screen surface all the time, at any time can be by sieving discharge end, screen effect is gradual in motion process Weaken, so that the particle more than screen size moves rapidly to export direction, the whole sieve until outside discharge machine, completing material Point.

Therefore, rotary flat sieve is big miscellaneous because reasons in structure can not be removed, it is necessary to and chain type receiving sieve or roller receiving sieve It is used cooperatively, floor space is big, inconvenient for operation.Treating capacity is relatively low.

The content of the invention：

The purpose of this utility model is to provide a kind of guipure and puts down back sieve, can remove it is big it is miscellaneous in it is miscellaneous and small miscellaneous, construction cost is low, Treating capacity is big, finished product good impurity removing effect.

What the purpose of this utility model was realized in：

Guipure puts down back sieve, and its composition includes, screen frame (unit), and motor connects sprocket wheel, the axle of described sprocket wheel by transmission mechanism It is hinged on screen box, the sprocket wheel described in two pairs is connected by chain respectively, is lifted with described screen box in described screen frame (unit), one group Metal sieve is arranged in conveyer belt, and by described chain drive, is equipped with and institute between upper and lower two layers of described conveyer belt The delivery board for the screen box connection stated, described screen box connect flat back rotation mechanism, collection grain bucket, institute are housed below described conveyer belt The collection grain bucket stated is connected with described screen box.

Described guipure puts down back sieve, the sieve aperture length of side 10-40mm of described metal sieve, or diameter 8-14mm, described Metal sieve side have and strengthen side, described screen box has the carrying roller of one group of metal sieve plate, lifts the metal on upper strata respectively Sieve and the metal sieve of lower floor；Either described screen box has one group of chain bracket or support roller, lifts chain from both sides, institute The metal sieve bottom stated is equipped with vibrator.

Described guipure puts down back sieve, and described metal sieve is the wire netting with bearing support, is sieved in described metal sieve The length of side 8-24mm in hole, width 6-12mm, described metal sieve are that a networking piece metal sieve is sequentially connected with, or are annular Guipure.

Described guipure puts down back sieve, and described flat back rotation mechanism, which includes manufacturing putting down, backhauls dynamic eccentric mechanism or inclined Roller mechanism or cam eccentric mechanism, eccentric gear mechanism, swing-bar mechanism or rocker device.

Described guipure puts down back sieve, and described delivery board is conveying sieve plate, and compass screen surface gathers sieve aperture, and the described sieve aperture length of side exists 8-30mm, width 1.2-1.8mm, described sieve plate bottom have sieve junk accommodating case, and described accommodating case connects impurity removal mechanism, Described sieve plate inclination angle is 6-10 degree, and described impurity removal mechanism is plate impurity removal mechanism or spiral impurity removal mechanism.

Described guipure puts down back sieve, has impurity-discharing screw or row between the sprocket wheel described in 2 of grain-entering mouth side Miscellaneous groove, either the lower section of described sprocket wheel there is impurity output mechanism or chute impurities removal mechanism.

Described guipure puts down back sieve, the diameter difference 20%-60% of the sprocket wheel described in two, forms conveyer belt and horizontal 2-6 The angle of degree, one end of conveyer belt is arranged on the tangent cleaning mechanism of described conveyer belt.

One kind stacking net belt puts down back sieve, and its composition includes：Guipure described in one of claim 1-7 puts down back the transmission of sieve Band, the conveyer belt that described guipure puts down back sieve are one group, each transmission, described conveyer belt share screen box, shared screen frame (unit) or It is fixedly connected between screen box, shares and put down back motion, and is arranged above and below between each conveyer belt, the same side is set into grain, Balancing distributing on the conveyer belt of sieve is put down back to the guipure of different height by tripper.

Beneficial effect：

1st, traditional guipure sieve yield is big, but can only clear up big miscellaneous, and the utility model use new screening motion mode, increases The amount of exercise of screening thing, mesh density is sieved by densification network band, make originally can only the big miscellaneous guipure of screen it is just clear during just Miscellaneous in the big miscellaneous while removal in can removing grain, the utility model provides plane rotation motion, lifting for material simultaneously Disposal ability several times, and add material penetrance, solve and be sized the mistake porosity of material and reduce because mesh size reduces The problem of.This causes the utility model while has the big advantage of screen amount and the good advantage of the small miscellaneous effect of screen, creates Large, medium and small miscellaneous efficient receiving sieve can be cleared up under the premise of big yield simultaneously, and by the way that a part of small miscellaneous sieve to be loaded to the shape of big miscellaneous sieve Into composite construction, screen box is shared, screen frame (unit) reduces sieve nest overall dimensions.

If miscellaneous in the 2, being removed using traditional plane rotation receiving sieve also while remove small miscellaneous operation, in it is big miscellaneous Screen during be easy to be embedded in mesh and can not remove so that effective sifting area reduce, cause screen effect to be paid no attention to Think.The utility model forces big impurity in taking out of by upper wire band, the small miscellaneous sieve of putting down back in middle level is only handled the small of suitable treatment It is miscellaneous, height space is saved by cutting big miscellaneous cleaning layer, increases small miscellaneous clearing zone, then miscellaneous greatly will carry out secondary cleaning again. Operated by the transportation of delivery board, make full use of compass screen surface it is past, return motion process, carry out 2 screenings of long range.With existing The long range operational advantages of guipure sieve, it is compounded with again and equals back the reciprocating rolling effect that sieve back and forth sieves.Meanwhile double operating distance Guipure sieve simultaneously be compounded with put down back screening move, realize kept straight on while can not all completing for these years peaceful rollback move New screening mode, screen effect, which has, to be obviously improved.

3rd, traditional guipure sieve yield is big, but can only handle big miscellaneous.And traditional plane rotation receiving sieve is no matter as at Reason it is big miscellaneous or in it is miscellaneous, effect is all undesirable, the structure that the utility model is sieved by changing traditional guipure, it is being ensured big production In the case of the advantage of amount, on the premise of hardly equipment cost, land area and height is increased, it is medium and small miscellaneous to add processing Function, the small miscellaneous sieve sifting surface doubled, while big-and-middle miscellaneous undesirable situation is just handled clearly for conventional planar revolution, The big miscellaneous compass screen surface increase sieve cover for small impurities of subduction, and screen number and screening length are effectively increased, it is small miscellaneous to play flat roto-siofter processing Advantage, form a kind of new sieve-type.Compared with completing the legacy equipment of usual screening quality and weight, construction of the present utility model Expense lowers more than half, has significant economic effect and technological progress.

4th, the utility model is lifted on using screen box in described screen frame (unit), and multigroup transmission belt is housed in screen box, is shared and is put down back Rotating mechanism, for the driving machine put down back sieve and suggest installing multiple flat back rotations being synchronized with the movement in length direction that length is larger Structure, it can move and remove in the case where mobile peace returns the composite flooding of circular motion with the movement and swing of rule, grain under driving It is miscellaneous, impurity-eliminating effect is significantly improved, improves equipment disposal ability.Due to reducing the usable floor area of building, this practicality is new Type only can just be built up with original less than half of construction cost, formed new large-scale grain impurity-removing machinery, filled up industry blank.

5th, the parallel chain sprocket structure of the utility model, 2 pairs or 2 pairs of above-described sprocket wheels connect to be formed by chain respectively Chain conveyer, parallel drive metallic screen piece, smooth working, strong shock resistance can be in even running under relatively high power, with one group Metal sieve is sequentially arranged to form conveyer belt, and there is acute angle to strengthen side for metal sieve side, can be with when being overturn along sprocket wheel Effectively avoid.

6th, traditional guipure sieve is by the grain of upper strata compass screen surface, directly falls and by lower floor's compass screen surface, only big miscellaneous forward, Grain diffusion is poor, and the very short distance of process, grain has just handled completion, so traditional guipure sieve length all compares It is short, larger impurity can only be removed, so simply just clear.And because traditional guipure sieves no diffusion function, addition is big When be very easy to block.Compass screen surface of the present utility model has simultaneously drives grain to move peace time circular motion along its length Function, make to fall the superincumbent cutting based on grain to spread rapidly, and along compass screen surface movement forward, increase Equal back disposal ability.Meanwhile compass screen surface remote position is transported to by delivery board through the grain of compass screen surface, effectively increase sieve Divide the length of processing procedure, be effectively increased processing yield.

7th, the sieve aperture length of side 10-40mm of metal sieve of the present utility model, or diameter 8-14mm, can effectively be cleared out Big or middle miscellaneous and higher treatment effeciency.Described screen box has the support roller or bracket of one group of chain, prevents the waist that collapses, and ensures The rolling flow direction of grain.

8th, delivery board of the present utility model can use conveying sieve plate, and compass screen surface gathers sieve aperture, according to the particle for sieving grain Size, the described sieve aperture length of side are arranged on 8-20mm, between width 1.2-1.8mm, can sift out in time it is small miscellaneous less than grain, The small miscellaneous sieve junk accommodating case into the installation of sieve plate bottom, described accommodating case connection impurity removal mechanism, is not increasing height and field In the case of ground level area, the utility model adds once small miscellaneous cleaning machine between big miscellaneous screening twice, clears out small After the bonding material of miscellany, reducing to bond makes big miscellaneous screen effect have greatly improved, and significantly improves impurity-eliminating effect.Described Sieve plate inclination angle is 6-10 degree, and special angle both ensure that the mobile and can of grain realized maximum screening length.

9th, metal sieve of the present utility model can use wire netting, handling ease, low cost, seamless, but easily become Shape, solved by rigid cage in the utility model.

10th, the utility model divides engineering process using reciprocating screen, between the sprocket wheel of grain-entering mouth side or sprocket wheel On axle, impurity-discharing screw is connected with, either there is impurity to exclude mechanism or chute impurities removal mechanism for the lower section of described sprocket wheel, will be past Move to again tail end it is big it is miscellaneous clear out, completely eliminate the impurities accumulation among the annular space of two layer screen face and blocking asked Topic, it is no longer necessary to often shut down, the manual cleaning process after taking apart is realized and worked continuously.

11st, the diameter of the sprocket wheel described in two of the present utility model can be arranged to diameter difference 20%-60%, form transmission The angle of band and horizontal 2-6 degree so that in the operation of levels material, all the time in uplink state, screen end grain layer is thinning, The flat movement velocity for backhauling dynamic middle grain slows down, and screen is cleaner, is not easy to run grain, improves the impurity-eliminating effect of grain.Some impurity It will be embedded in motion process in the sieve aperture of particular size, it is small to equal back stress, easily takes out of, and the utility model sets descaling machine Structure is removed, and the utility model is installing cleaning mechanism with the tangent position of described conveyer belt, is typically mounted at conveyer belt One end so that the metal sieve of conveyer belt be obtained in the motion process of each circumference cleaning renewal.

12nd, the utility model additionally provides stacked scheme, the conveyer belt described in one group be fixed in screen box and on Lower arrangement, homonymy enter grain, by tripper into the compass screen surface of different height balancing distributing, form parallel processing structure, simultaneously The conveyer belt of different height can share it is a set of put down back motion, improve factory building utilization rate, improve treatment effect.Country is even Continue several years bid problems for issuing large-scale sieving machine, the utility model fully achieves the requirement for the treatment of capacity, energy-conservation, and accounts for Ground area and height are much smaller than the combination of existing equipment, are the developing direction of sieving machine.

Brief description of the drawings：

Accompanying drawing 1 is the structural representation of this product.

Accompanying drawing 2 is the A-A direction views of accompanying drawing 1.

Accompanying drawing 3 is the different product structure schematic diagram of diameter of cylinder.

Accompanying drawing 4 is that stacking net belt puts down back sieve structure schematic diagram.

Accompanying drawing 5 is the structural representation for putting down back sieve.

Accompanying drawing 6 is the upward view of accompanying drawing 5.

Accompanying drawing 7 is the y node enlarged drawings of accompanying drawing 5.

Accompanying drawing 8 is another weighting distribution wheel（Partially thick counterweight）Structural representation.

Accompanying drawing 9 is the structural representation of chain.

Accompanying drawing 10 is the upward view of accompanying drawing 9.

Accompanying drawing 11 is the left view of accompanying drawing 10.

Accompanying drawing 12 is the structural representation of metal sieve.

Accompanying drawing 13 is the side view of metal sieve.

Accompanying drawing 14 is the structural representation of eccentrically mounted weight wheel.

Accompanying drawing 15 is the A-A cross-sectional views of accompanying drawing 14.

Accompanying drawing 16 is the structural representation of spiral impurity removal mechanism.

Accompanying drawing 17 is the structural representation of plate or moving tooth impurity removal mechanism.

Accompanying drawing 18 is the node enlarged drawing of sieve plate chain and carrying roller.

Accompanying drawing 19 is the working state schematic representation of plate.

Accompanying drawing 20 is the structural representation of plate.

Accompanying drawing 21 is the left view of accompanying drawing 20.

Accompanying drawing 22 is the structural representation that the suspension rod 5 with ball pivot connects respectively at casing 3 and screen frame (unit) 1

Accompanying drawing 23 is the concrete structure schematic diagram of guipure.

Accompanying drawing 24 is the Z node diagrams of relative position between the metal sieve of plane motion position.

Relative position Y node diagrams between the metal sieve of surface location when accompanying drawing 25 turns over sprocket wheel.

Embodiment：

Embodiment 1：

Guipure puts down back sieve, and its composition includes：Screen frame (unit) 1 with grain inlet A, motor connect sprocket wheel 2 by transmission mechanism, The axle of described sprocket wheel is hinged on screen box 3, and the sprocket wheel described in two pairs is connected by chain 4 respectively, is passed through in described screen frame (unit) Suspension rod 5 or rocking bar 5 lift described screen box 3 so that material can realize the linear reciprocating motion in screen frame (unit) and by flat Return circular flat of mechanism manufacture backhaul it is dynamic, it is compound go out the forms of motion that spirally advances of grain, one group of metal sieve 6 sequentially arranges Conveyer belt is formed, and is driven by described chain 4, conveyer belt can carry out the conveying of grain, diffusion, and grain is sieved Point, and can mutually be rotated between metal sieve 6 so that whole conveyer belt can curve, on the upper strata of described conveyer belt Inclined delivery board 9 is housed, described delivery board 9 is by upper strata in the space between compass screen surface 7 and two layers of compass screen surface of lower floor's compass screen surface 8 The grain fallen in compass screen surface is transported on the position of lower floor's compass screen surface more front end, is effectively increased the utilization length of compass screen surface, described Delivery board 9 is connected with the described screen box 3 of both sides, the screw for screen box put down back and advance, the connection of described screen box Flat back rotation mechanism 10 so that grain above conveyer belt etc. is spinned motion, equipped with collection grain bucket 11 below described conveyer belt, Described collection grain bucket is connected with described screen box 3.

Embodiment 2：

Guipure described in embodiment 1 puts down back sieve, and described metal sieve 6 is punching press sieve, is arranged in described metal sieve Show intensive sieve aperture, can use impact style formed punching, the sieve aperture length of side 10-30mm of described metal sieve 6, or Diameter 8-14mm, described metal sieve side, which has, to be strengthened at 61 and avoidance 62；Effectively avoided during the turning for being, avoid doing Relate to.Described screen box has the carrying roller 63 of one group of metal sieve plate, lifts the metal sieve on upper strata and the metal sieve of lower floor respectively； Either described screen box has one group of chain bracket or support roller 64, and chain is lifted from both sides.On described chain 4 also have with Metal sieve bottom described in the rebound 41. that described metal sieve 6 is connected is equipped with vibrator, and plug is removed by vibrating Grain in sieve aperture.

Embodiment 3：

Guipure described in embodiment 1 or 2 puts down back sieve, and described metal sieve 6 is with rigid reinforcement bearing support 65 Wire netting, the length of side 8-24mm of sieve aperture, width 6-12mm, length and width are all higher than being sized grain in described metal sieve Long side, described metal sieve be a networking piece add the metal sieve after frame to be sequentially connected with, or for ring network formed gold Belong to guipure.

Embodiment 4：

Guipure described in embodiment 1 or 2 or 3 puts down back sieve, described flat back rotation mechanism include manufacture it is flat backhaul it is dynamic inclined Xin Lun mechanisms either eccentric wheel mechanism or cam eccentric mechanism 11, eccentric gear mechanism 12, swing-bar mechanism or rocker device.

Embodiment 5：

Guipure described in embodiment 1 or 2 or 3 or 4 puts down back sieve, and described delivery board 9 is conveying sieve plate, and compass screen surface, which gathers, to be sieved Hole, the described sieve aperture length of side are wanted in 8-30mm, width 1.2-1.8mm, the short side of smallest particles of the width typically than sieving grain Small, described conveying sieve plate bottom has sieve junk accommodating case 91, described accommodating case connection impurity removal mechanism 92, described sieve plate Inclination angle is 6-10 degree, and described impurity removal mechanism is the impurity removal mechanism of plate 93 or spiral impurity removal mechanism.

Embodiment 6：

Guipure described in embodiment 1 or 2 or 3 or 4 or 5 puts down back sieve, between the sprocket wheel described in 2 of grain-entering mouth side With impurity-discharing screw, either the lower section of impurities removal groove 21 or described sprocket wheel has impurity output mechanism or chute impurities removal machine Structure.It is no matter more under vibration when one end of fiber is inserted into sieve aperture because the debris in grain contains more fiber Long stalk can all be passed through and fallen, so while first layer compass screen surface is passed through, and situation about being intercepted by the second layer is much shown in, institute So that in traditional screening process, middle blocked by debris is very common, it is necessary to be interrupted production, is manually drawn out.The utility model Completely solve this problem.

Embodiment 7：

Guipure described in embodiment 1 or 2 or 3 or 4 or 5 or 6 puts down back sieve, can say, the diameter by the sprocket wheel described in two Difference 20%-60% is made, forms the angle of conveyer belt and horizontal 2-6 degree, the cleaning mechanism 75 tangent with described conveyer belt is pacified Mounted in one end of conveyer belt.

A kind of guipure sieve described in utilization, which is put down, backhauls dynamic grain impurity-removing method, and artificial selection removes more than 300mm stalks Cauline leaf debris, the cutting based on grain is added in the upper strata metal sieve for putting down back sieve by grain inlet, it is reciprocal before Grain progressively passes through upper strata metal sieve in motion and turning movement, and the big miscellaneous port of export that runs to of residue on sieve drops into collector In；Grain through described metal sieve is fallen on delivery board, is fallen putting down to backhaul to move with Action of Gravity Field along delivery board, and one It is straight to drop into the metal sieve in motion, start as the lower metal sieve opposite with the upper strata metal sieve direction of motion is entered Row motion, secondary big miscellaneous screening is carried out, residue on sieve concentrates on the port of export of lower floor, by impurity output mechanism by secondary cleaning Big miscellaneous exclusion, the secondary removal of impurities grain through lower metal sieve fall into collection grain bucket, collected, cleaning mechanism in motion process Constantly cleaning hangs over the debris in metal sieve, keeps metal sieve unobstructed.

A kind of guipure sieve described in utilization, dynamic progress grain impurity-removing method is backhauled by straight reciprocating motion peace, manually Selection removes more than 300mm stalks, stems and leaves debris, and the cutting based on grain is added to the upper strata back put down and sieved by grain inlet Metal sieve on, grain in straight reciprocating motion and turning movement progressively passes through the metal sieve on upper strata, and residue on sieve is big The miscellaneous port of export that runs to is dropped into collector, and the grain through described metal sieve falls on conveying sieve plate and carried out except small Miscellaneous screening, the grain tailed over backhaul descending along compass screen surface under dynamic and Action of Gravity Field, drop into metal sieve in motion always flat Relevant position, start, with the lower metal sieve motion opposite with the upper strata metal sieve direction of motion, to carry out secondary big miscellaneous sieve Point, the grain through the secondary removal of impurities of lower metal sieve falls into collection grain bucket, collects, residue on sieve concentrates on the outlet of lower floor End, by impurity output mechanism by the big miscellaneous exclusion of secondary cleaning, removed on water conservancy diversion removal of impurities sieve it is small it is miscellaneous discharged from side, fortune Cleaning mechanism constantly cleaning hangs over the debris in metal sieve during dynamic, keeps metal sieve unobstructed.

Embodiment 8：

One kind stacking net belt puts down back sieve, and its composition includes：Multiple guipures put down back the conveyer belt of sieve, and described guipure is put down back The conveyer belt of sieve is one group, and size is basically identical, each transmission, but described conveyer belt share screen box, share screen frame (unit) or It is fixedly connected between person's screen box, shares and put down back motion, and be arranged above and below between each conveyer belt, the same side is set into Grain, balancing distributing on the conveyer belt of sieve is put down back to the guipure of different height by tripper 22.

Claims (8)

1. a kind of guipure puts down back sieve, its composition includes, screen frame (unit), and motor connects sprocket wheel by transmission mechanism, described sprocket wheel Axle is hinged on screen box, and the sprocket wheel described in two pairs is connected by chain respectively, it is characterized in that：It is lifted with described screen frame (unit) described Screen box, one group of metal sieve is arranged in conveyer belt, and by described chain drive, upper and lower two layers of described conveyer belt Between equipped with the delivery board that be connected with described screen box, described screen box connects flat back rotation mechanism, described conveyer belt lower section Equipped with collection grain bucket, described collection grain bucket is connected with described screen box.

2. guipure according to claim 1 puts down back sieve, it is characterized in that：The sieve aperture length of side 10-40mm of described metal sieve, Or diameter 8-14mm, described metal sieve side, which has, strengthens side, and described screen box has the carrying roller of one group of metal sieve plate, The metal sieve on upper strata and the metal sieve of lower floor are lifted respectively；Either described screen box has one group of chain bracket or support Wheel, lifts chain, described metal sieve bottom is equipped with vibrator from both sides.

3. guipure according to claim 1 or 2 puts down back sieve, it is characterized in that：Described metal sieve is the gold with bearing support Belong to net, the length of side 8-24mm of sieve aperture in described metal sieve, width 6-12mm, described metal sieve is a networking piece metal Sieve is sequentially connected with, or is endless mesh belt.

4. guipure according to claim 1 or 2 puts down back sieve, it is characterized in that：It is flat that described flat back rotation mechanism includes manufacture Backhaul dynamic eccentric mechanism either eccentric wheel mechanism or cam eccentric mechanism, eccentric gear mechanism or shakes swing-bar mechanism Linkage.

5. guipure according to claim 1 or 2 puts down back sieve, it is characterized in that：Described delivery board is conveying sieve plate, and compass screen surface is close Cloth sieve aperture, the described sieve aperture length of side have sieve junk accommodating case, institute in 8-30mm, width 1.2-1.8mm, described sieve plate bottom The accommodating case connection impurity removal mechanism stated, described sieve plate inclination angle be 6-10 degree, described impurity removal mechanism for plate impurity removal mechanism or Person's spiral impurity removal mechanism.

6. guipure according to claim 1 or 2 puts down back sieve, it is characterized in that：Positioned at the sprocket wheel described in 2 of grain-entering mouth side Between have impurity-discharing screw either the lower section of impurities removal groove or described sprocket wheel has impurity output mechanism or chute impurities removal machine Structure.

7. guipure according to claim 1 or 2 puts down back sieve, it is characterized in that：The diameter difference 20%- of sprocket wheel described in two 60%, the angle of conveyer belt and horizontal 2-6 degree is formed, the one of conveyer belt is arranged on the tangent cleaning mechanism of described conveyer belt End.

8. one kind stacking net belt puts down back sieve, its composition includes：Guipure described in one of claim 1-7 puts down back the transmission of sieve Band, it is characterized in that：The conveyer belt that described guipure puts down back sieve is one group, each transmission, and described conveyer belt shares screen box, shared It is fixedly connected between screen frame (unit) or screen box, shares and put down back motion, and be arranged above and below between each conveyer belt, the same side is set Grain is inserted, balancing distributing on the conveyer belt of sieve is put down back to the guipure of different height by tripper.