CN103444473B

CN103444473B - Residual mulching film recovery method and recovery unit

Info

Publication number: CN103444473B
Application number: CN201310375581.2A
Authority: CN
Inventors: 黄胤
Original assignee: Shenzhen Juyuantiancheng Technology Co ltd
Current assignee: Shaoguan Plastic Recycling Resources Co Ltd
Priority date: 2013-08-22
Filing date: 2013-08-22
Publication date: 2015-08-05
Anticipated expiration: 2033-08-22
Also published as: CN103444473A

Abstract

The present invention relates to Farm mulch cleaning, recovery and reuse field, technical problem to be solved overcomes above-mentioned defect of the prior art, provide a kind of can not only earth's surface and can carry out in the residual mulching film of underground the residual mulching film recovery method that reclaims by burying and reclaim unit.Method, specifically comprises the following steps: dirt bed scarifying earth's surface being contained residual mulching film; The earth of scarifying is scooped up in the lump together with residual mulching film; By beating, residual mulching film is come off from earth in the earth scooped up and residual mulching film, and carry out centrifugation residual mulching film and earth; Finally residual mulching film is collected.The present invention directly will bury the earth's surface dirt bed scarifying of mulch film, then the earth of institute's scarifying is all collected together with by the residual mulching film routed up, the mixture of these earth and residual mulching film is carried out centrifugation, finally the mulch film separated is collected.

Description

Residual mulching film recovery method and recovery unit

Technical field

The present invention relates to Farm mulch cleaning, recovery and reuse field, is a kind of residual mulching film recovery method and recovery unit in particular.

Background technology

Before 30 years, agricultural mulching is promoted, and helps Chinese agriculture increasing both production and income.At present, the usage amount of the technological development of China's mulch film and covering with plastic film ranks first in the world.Along with agricultural mulching constantly promotion and application for many years, the mulch film remained in farmland gets more and more, and go up a century under field conditions (factors) and all can not get degraded, severe contamination environment.Residual mulching film harm is mainly manifested in following several respects: one, spoiled soil structure, affects gas permeability and the water penetration of farmland quality and soil, cause crop yield to decline; Two, the harmful substance in residual mulching film, makes crops root system grow and dead, or is that this toxicity causes that crop growth is slow or yellow is dead; Three, a large amount of residual mulching film is present in ploughing and weeding layer, and residual mulching film is wound around and causes the machine work parts of farming equipment not rotate, and affects agricultural machinery working; Four, do not clear up or clear the residual mulching film abandoned in the edge of a field, being blown afloat by strong wind and be scattered everywhere, have a strong impact on rural environment.

Waste mulching film pollution problem has been " persistent ailment " that a lot of country of the world faces.Control farmland " white pollution " has become countries in the world when the instant work of last item.One of project that recycling and administration work Ye Shi China of waste and old agricultural mulching pays much attention to, give special assistance to, and be the Important Action of relation descendants's survival and development in the future!

The method that current improvement waste mulching film pollutes mainly contains:

One, biological degradation recoverable environmental protection type mulch film is promoted, reduce agricultural mulching " white pollution ", but in prior art, no matter be the Biodegradable films such as liquid film, Light lysis Film or tunica fibrosa, more or less all have problems in agricultural production test, particularly immature the and market price factor of technology causes Biodegradable mulch to be difficult to for many years promote.The crop genetics in northern China and northwest China area still needs omnidistance overlay film, but Biodegradable mulch film is on the high side due to it, and be two to three times of general agricultural mulching, peasant cannot bear at all.The immature of technology is also the significant obstacle promoted, and degradative plastic film often loses soil moisture conservation, heat-insulating property at agriculture Later growth, and some films did not even also have the just weathering of crop growth phase.

Another serious problem is, crisp after Biodegradable mulch degraded due to containing starch, the organic matters such as vegetable fiber, easily and soil particle glue together, recovery difficult than common agricultural mulching more greatly, generally will not reclaim.But Biodegradable mulch is embedded in soil for a long time in a large number, can or can not affect soil reclamation actually, whether is degradablely harmless carbohydrate and without scientific appraisal, temporarily cannot determines.But a large amount of synthetic compounds enters in soil, can predict very likely bring disguise stronger, cause soil cannot Planting Crops contaminant problems.This problem improves constantly along with scientific and technological detection level, residual compounds after Biodegradable mulch degraded is necessarily familiar with gradually by people the impact in soil and realizes, the old road that this will repeat " pollute-administers-pollute again-administer ", that today, was our this generation people by our descendants in the future faced by how going?

Even Biodegradable mulch can be degraded completely, but the application of this Novel mulching film can not reduce the useless film remained in now in farmland, and namely the application of Novel mulching film cannot solve at present to the mulch film problem of soil reclamation severe contamination.

Two, the measure adopting artificial and mechanical recovery to combine, spend a large amount of manpower and materials, the residual mulch film of soil surface is reclaimed by manpower craft or rake, existing recovery is given up film machinery mainly tractor-drawn multilayer combed rake or annular rolling spiketooth type residual mulching film scavenger, and the useless film machinery also having part novel reclaims the mulch film (0 ~ 8cm degree of depth) be embedded in earth.But aforesaid way all can only be picked up a large useless film for farmland surface, then effect is had no to the annual useless film remained between soil cultivating layer (10 ~ 30cm degree of depth) that constantly increases of removing, because the mulch film of this degree of depth is owing to burying for many years, strike up partnership with soil, mechanically reclaim, dynamics of having dug is too little then cannot be pulled out the mulch film of this degree of depth, and dynamics of having dug then easily breaks mulch film too greatly, cannot pull out mulch film equally.And aforesaid way can only be used for reclaiming area comparatively greatly, longer mulch film, has no idea completely for mulch film fragment, and the mulch film of small size just cannot be gone out at all by the way in an animal-drawn seed plough.For the mulch film reclaimed, the mode of a lot of process piles up to get up to burn, and causes the secondary pollution to air.

Show according to correlative study data, even if adopt a large amount of manpower and materials to reclaim, to cultivate in full 10 years agricultural land soils every mu still containing 17 kilograms of residual mulching films, to cultivate in full 20 years agricultural land soils every mu still containing 28 kilograms of residual mulching films, to cultivate in full 30 years agricultural land soils every mu still containing 45 kilograms of residual mulching films.Along with the prolongation of land farming phase, in farmland, residual mulching film quantity will increase sharply, and after 50 years, this soil cannot be cultivated, even now, the survival rate of crops also declines along with the increase of the content of mulch film in soil.Therefore, how to process the problem of the regional arable land residual mulching films such as current China northeast, northwest, the plantation ability recovering soil concerns the large problem of China's people's livelihood and following national strategy.

The residual mulching film be exposed on earth's surface generally can only reclaim by method of the prior art, or reclaims and be imbedded in a small amount of residual mulching film of ground shallow-layer on a small quantity, for being imbedded in a large number under earth's surface, particularly the mulch film of deep layer cannot reclaim.The present invention directly will bury the earth's surface dirt bed scarifying of mulch film, then the earth of institute's scarifying is all collected together with by the residual mulching film routed up, the mixture of these earth and residual mulching film is carried out centrifugation, finally the mulch film separated is collected.Like this can completely by bury with earth's surface under, residual mulching film of the remote past all reclaims, and makes land restoration cultivate ability.

In order to can efficiently, thoroughly earth be separated with residual mulching film, in described step S3 in centrifugal separation processes, earth and residual mulching film are placed in the double-layer cavity that internal layer shell is hollow out housing and rotate, centrifugal force makes earth through hollow out housing, and residual mulching film is stopped by hollow out housing, is retained in hollow out housing, realize two kinds of separation.Above-mentioned internal layer shell is that the structure of the double-layer cavity of hollow out housing plays crucial effect, when in the process reclaiming earth and residual mulching film mixture high-speed rotation in the internal layer shell of this cavity, because mud particles is less, and residual mulching film area is larger, so under the influence of centrifugal force, mud particles can pass through the mesh on hollow out housing, and residual mulching film can't pass, and is just retained within internal layer shell.Outer casing generally adopts the structure of sealing or semitight, can stop the earth being centrifuged and throwing away, prevent earth from flying upward under high speed centrifugation effect everywhere.The general opening of Semi-seal structure is positioned at the bottom of housing, and the earth separated directly is got back on ground, fills up because scarifying above by the vacancy of earth scooped up.

In order to can continuous print operation, in described step S1, continuously earth's surface be contained the dirt bed scarifying of residual mulching film; Continuously the earth of scarifying is scooped up in the lump together with residual mulching film in described step S2; The earth separated in described step S3 is directly expelled to earth's surface, and calms down.In this approach, described outer casing adopts Semi-seal structure, and the opening of earth on the downside of outer casing is directly discharged, and then calms down, and makes land restoration smooth.In the process of this continuous productive process, earth and residual mulching film are dug and are shoveled out, backfill and smooth again after being separated, through post-job soil and originally as broad as long, but on earth's surface and the residual mulching film be imbedded under earth's surface be separated and reclaimed.

In order to earth being thoroughly separated with residual mulching film, reducing in the residual mulching film reclaimed and be mingled with a large amount of earth, prevent earth and the nutrient loss in arable land.In described step S3, centrifugation comprises the following steps:

S31. pat earth and residual mulching film by impeller mechanism, drive earth and residual mulching film to rotate simultaneously and carry out centrifugal first separation; Carry out high speed by impeller mechanism to the earth scooped up and film mixture to pat, in the process of patting, earth thoroughly can be separated with residual mulching film, particularly for residual mulching film that is of the remote past, that be imbedded in earth deep layer, these mulch films are through burying for a long time, form a scab into block with earth, can these clods be clapped broken by the mode of patting at a high speed, residual mulching film is separated.In addition under the effect of impeller mechanism high-speed rotation beating, earth high-speed rotation in above-mentioned double-layer cavity can be driven, separatory operating on centrifugal force is provided.

S32. the residual mulching film after being separated by wind drive and the earth be mixed in residual mulching film carry out centrifugal secondary separation of spinning.Residual mulching film after centrifugal beating, the earth on it comes off substantially, but still has a certain amount of earth to be clipped between residual mulching film, can be taken out of in the lump, in order to also be reclaimed by these earth in the rotation process of impeller mechanism.The present invention provides the mode of wind drive by blast machine, drives residual mulching film and earth mixture to do spin motion in another double-layer cavity, is separated by earth equally by operating on centrifugal force and hollow out internal layer shell.After the process of twice separation, can obtain the residual mulching film that clay content is little, this residual mulching film collects and can directly recycle, and without the need to do again go mud process.

In order to can adapt to work continuously, in described step S31, the air-flow of the screw propulsion formed by impeller mechanism, be driven earth and residual mulching film to advance, in traveling process, carries out centrifugal first separation; By the air-flow of screw propulsion, earth can be promoted and residual mulching film moves to opposite side from the side of cavity, in this process, earth is thrown out of outside interior side body, residual mulching film is pushed into centrifugal secondary separation, and the mixture that so just constantly can add new earth and residual mulching film in cavity processes.In step S31, drive residual mulching film and the earth spiral inclination be mixed in residual mulching film upwards to advance by wind-force, in traveling process, carry out centrifugal secondary separation; In the process of advancing at spiral equally, earth is separated, the direction tilted upward can utilize earth and residual mulching film under the not same-action of Wind power propelling, utilizes the effect of gravity earth to be collected to the bottom of cavity, the earth be mixed in film can be separated more thoroughly.

In the soil that China adopts agricultural mulching to cultivate for many years, according to the length of the time used, the degree of depth that mulch film remains under earth's surface is different, age is more remote, the degree of depth of burying is darker, according to the result of investigation, use the Northwest of agricultural mulching the earliest, containing the residual mulching film of more than 98% in the degree of depth of earth's surface 30cm.In the above-mentioned methods, scarifying and the earth scooped up darker, the load of the machine of operation is larger, earth number formulary to be processed is more, and the efficiency of process is lower, for weighing the energy consumption of machine, the efficiency of process, in step S1 of the present invention, the degree of depth of scarifying earth is between 25 ~ 35cm.Process the earth of this degree of depth, the mulch film be imbedded under earth's surface can not only be removed comparatively thoroughly, and the energy consumption of equipment and efficiency are all relatively applicable to processing the soil of large area mechanized farming.

In order to make earth and residual mulching film can be looser before carrying out centrifugal treating, be conducive to patting and centrifugation, described step S2 comprises the following steps:

S21. the earth of scarifying is carried out the step cut; The process cut can not only provoke the larger residual mulching film of area, and the clod of bulk can be divided into fritter clod, is so more conducive to follow-up beating and centrifugal treating.The much knives tool that the cylindrical shape main wheel being 250 ~ 800 revs/min by rotating speed in this step S21 drives cuts earth.The structure of cylindrical shape main wheel can prevent residual mulching film to be wound on main wheel, and the density of cutter arranged side by side can set according to actual needs, and density is larger, cuts clod less.And highdensity cutter is in the process of high-speed rotation, just most earth and residual mulching film can be provoked.

S22. the step will scooped up in the lump together with residual mulching film through scarifying or the earth that cuts.Carrying out, in the process that high-speed rotation cuts, can provoking a large amount of earth and residual mulching film, remaining a small amount of earth and residual mulching film are scooped up in the lump by shovel board, can reclaim all earth more than by the scarifying degree of depth and residual mulching film thoroughly.

Residual mulching film after wind drive is separated will reclaim, but blast is now comparatively large, so step S4 specifically comprises:

S41. the residual mulching film that air-flow drives is carried out the step of release of pressure; Import in a hollow out recovery cavity particular by the residual mulching film that air-flow is driven and carry out release of pressure.Residual mulching film after release of pressure freely falls in recovery cavity.

S42. the step that the residual mulching film fallen carries out packing is automatically collected.

The present invention also provides the recovery unit being applicable to above-mentioned residual mulching film recovery method further, it is characterized in that being provided with following system in traction frame:

Earth's surface is contained the dirt bed scarifying of residual mulching film, and the earth of scarifying is delivered to the soil scarifying rotary tillage induction system of next system in the lump together with residual mulching film;

The earth scooped up and residual mulching film are carried out the centrifugal separation system of centrifugation; Collect and compression packaging system with by collected for the residual mulching film after being separated residual film.

Said system order in traction frame is installed, by tractor or other power towing towing bracket, just a whole set of unit that reclaims can be driven to advance, earth and residual mulching film are constantly dug, scoop up, be separated, discharge earth, backfill, smooth earth and last collection by residual mulching film packs, pipelining, can carry out mechanization process to large-area arable land.

In order to carry out above-mentioned twice centrifugation, described centrifugal separation system comprises:

Pat earth and residual mulching film, drive earth and residual mulching film to rotate the earth thin film separation system of carrying out centrifugal first separation simultaneously; With

The residual mulching film after being separated and the earth be mixed in residual mulching film is driven to carry out spinning the selection by winnowing earth thin film separation system of centrifugal secondary separation.

Each system concrete structure above-mentioned is as follows:

The soil scarifying rotary tillage induction system of machine for recycling mulch film group is the first homework department of machine for recycling mulch film group, its structure comprises the deep ploughing Pa Ju mechanism be arranged in traction frame, rotary blade wheel mechanism and actuating unit, deep ploughing Pa Ju mechanism is arranged on before rotary blade wheel mechanism, and described actuating unit drives rotary blade wheel mechanism.During operation, pull traction frame by machines such as tractors, drive whole unit to advance, described deep ploughing rake lamps structure is positioned at frame foremost, and for the earth scarifying by soil cultivating layer, the degree of depth of scarifying is general between 10 ~ 40cm according to actual needs.Deep ploughing rake tool by the layer scarifying of this degree of depth to a certain extent, actuating unit drives rotary blade wheel mechanism High Rotation Speed, earth is beaten pine again, while bulk earth is broken, the earth of quilt is communicated with the mulch film remained in earth and a large amount of earth digs, in the earth thin film separation system sending into next stage in the lump, does further process.This equipment is compared with traditional machine mainly digging mulch film, residual mulching film and earth is characterized in dig in the lump, farthest the residual mulching film in earth can be cleared completely, particularly be positioned at earth deep layer, the caked residual mulching film with earth, this mulch film adopt traditional equipment firmly too little being difficult to thrown, firmly excessive, easily break mulch film, also cannot dig.Mulch film and earth dig in the lump by this equipment while smashing clod, even if break mulch film, also it doesn't matter, are dug in the lump because the mulch film after breaking still can be communicated with earth.

Rotary blade wheel mechanism of the present invention comprises cylindrical shape main wheel and is distributed in the much knives tool on cylindrical shape main wheel.The cylindrical shape main wheel of this structure can prevent large or longer mulch film to be wound around rotary blade wheel mechanism, and the much knives prodigiosin of intensive layout is enough quick and highdensityly cut earth, shreds or tear large-area mulch film fast.Another effect adopting the cutter of intensive layout is the effect can playing plane soil, even the intensive cutter longitudinal arrangement under high-speed rotation, also a large amount of earth can be forced to move towards a direction, so just play the double action cutting earth He dug earth simultaneously.Described cutter can adopt dismountable mounting structure, so that replacing after tool damage and maintenance.

In order to improve cutting earth and dig the efficiency of earth of cutter, the power consumption of reduction actuating unit.Cutter of the present invention comprises staggered rimmer knife tool and short sword tool, adopt the structure of staggered length cutter, the resistance that rotary blade wheel mechanism advances can be reduced, under the prerequisite of power not improving actuating unit, improve the rotating speed of rotary blade wheel mechanism, the raising of rotating speed, just can improve the effect cutting earth and plane soil further.

Described rimmer knife tool and short sword tool preferably arrangement mode are staggered in isosceles triangle, and the protection rimmer knife tool that such arrangement architecture can be very high, prevents rimmer knife tool from use fractureing, and reduces the frequency of maintenance of equipment.In general, the length of described rimmer knife tool is between 25 ~ 35cm, and the length of described short sword tool is between 10 ~ 20cm, and the degree of depth in the scarifying soil of described deep ploughing Pa Ju mechanism is between 25 ~ 35cm.According to the result of research, within residual mulching films a large amount of at present is mainly deposited in the degree of depth of below earth's surface 30cm, the residual mulching film of this scope accounts for 98% of residual mulching film total amount, therefore for present case, the degree of depth in the scarifying soil of deep ploughing Pa Ju mechanism is comparatively reasonable between 25 ~ 35cm, and described length cutter also designs according to this scope.

In order to improve the intensity of cutter, the effect of suggestion plane soil, described cutter is curved, and cylindrical shape main wheel radially distributes, and the rotating speed of cylindrical shape main wheel is 250 ~ 800 revs/min.The rotating speed of cylindrical shape main wheel suitably can be adjusted according to the hardness in soil, if but lower than 250 revs/min, cut the effect of earth and plane soil by not obvious, particularly dig native effect, when rotating ratio is lower, because cutter radially distributes, a large amount of earth cannot be dug, will requirement do not reached.For current soil hardness, the rotating speed of 800 revs/min has been enough to the earth of existing hardness to cut broken, and it is also little that rotating speed improves meaning again.The rotating speed of this equipment the best preferably controls between 300 ~ 500 revs/min, and this rotating speed can not only be applicable to the use in major part arable land at present, and the effect of plane soil is fairly obvious, and energy consumption is also moderate, is conducive to a large amount of applying.

In order to improve the stability of the running of equipment, deep ploughing Pa Ju mechanism comprises the subsides ground accessory whorl of both sides and is distributed in the rake tool pasted between ground accessory whorl, and described subsides ground accessory whorl and cylindrical shape main wheel are on sustained height, and the degree of depth in described rake tool scarifying soil is between 25 ~ 35cm.Deep ploughing Pa Ju mechanism adopts the tilling depth identical with rotary blade wheel mechanism, and fully the earth that will dig can be carried out pre-scarifying, the further process of rotary blade wheel mechanism is ready.The pretreatment of scarifying earth is more abundant, and its loss when carrying out operation of rotary blade wheel mechanism is less, and load is also less, and the effect digging earth and residual mulching film is higher.For this reason, for ensureing the reliability of deep ploughing, this patent increases subsides ground accessory whorl in the both sides of rake tool, and make subsides ground accessory whorl and cylindrical shape main wheel on same subsides ground level, namely paste the end of ground accessory whorl and cylindrical shape main wheel along in the same horizontal line, the degree of depth that can ensure the degree of depth of deep ploughing like this and cut earth, plane native is corresponding.

In order to ensure the subsides ground property of deep ploughing Pa Ju mechanism and rotary blade wheel mechanism, this two mechanism is all connected with traction frame by pasting ground damping.Described subsides ground damping preferably adopts hydraulic spring grease cup damper, is provided with this two equipment pasting ground damping and can maintains the performance that it pastes ground in the process being pulled advance, is adjacent to different terrain change and carries out operation, effectively avoid leakage digging phenomenon.And the effect of damping occasionally can avoid the rigid collision on equipment and ground, improve the safety of equipment.

When normal operation, described cutter and rake tool all go deep into below earth's surface, when non-operation, move this unit, just need cutter and rake tool to be increased to leave ground.Therefore, draw frame described in this patent and comprise mainframe and lifting support, be provided with support wheel below mainframe, described lifting support is arranged on relative mainframe lifting on mainframe, and described deep ploughing Pa Ju mechanism and rotary blade wheel mechanism are arranged on reverse U shape lifting support.Mainframe is set directly at the stability that support wheel can ensure draw, lifting support can drive deep ploughing Pa Ju mechanism and the lifting of rotary blade wheel mechanism, cutter and rake tool are increased to higher than support wheel and earth surface above water, prevent the traction under non-handling situations from damaging this cutter and harrowing tool.Another effect of lifting support can adjust this equipment deep ploughing earth and dig the degree of depth of earth, for some residual mulching films in depth top layer be not too dark arable land, be separated without the need to the earth of 30cm below earth's surface all being carried out recovery, the energy consumption like this in operation process just can reduce greatly.

In order to improve the effect digging earth, reclaim by the earth of scarifying and the residual mulching film be mixed in earth, rotary blade wheel mechanism described in this patent is also included in the mud guard arranged in semi-surrounding above cylindrical shape main wheel and cutter as far as possible.The effect of the mud guard of this semi-surrounding prevents the earth by the rotary blade wheel mechanism of high-speed rotation has dug from splashing everywhere, be limited in certain space, the one side opening corresponding earth thin film separation system of described semi-surrounding, enables earth orientation enter the process that this system carries out next step.

The present invention passes through deep ploughing Pa Ju mechanism by the earth scarifying of the certain depth below earth's surface, the soil layer of this scarifying is cut into fragment together with the mulch film be mixed in soil layer by the rotary blade wheel mechanism further by high-speed rotation, and most of earth and mulch film is dug simultaneously and do further process.Paste by arranging the height change that ground shock mitigation system can make this two equipment adaptation earth's surface, and modified node method makes deep ploughing Pa Ju mechanism consistent with the degree of depth of rotary blade wheel mechanism process soil layer, decreases the load of rotary tillage cutter.The length arrangement that rotary blade wheel mechanism is fixed a cutting tool reasonably is set, energy consumption can be lowered further, improve the effect of plane soil.Lifting support can make this equipment be applicable to the use in the arable land being subject to different seriously polluted property, can lower the energy consumption of equipment further.

The earth thin film separation system of machine for recycling mulch film group, comprise earth thin film separation mechanism, described earth thin film separation mechanism comprises the housing with feed end and discharge end, the screen pack be arranged in housing, is arranged on the actuating unit that impeller mechanism in screen pack and impeller mechanism rotate, described screen pack, along the distribution of case inside wall, keeps a distance with sidewall.In operation process, the mixture of earth film enters in housing from feed end, by being patted at a high speed by impeller mechanism in housing, earth is separated, along with the high-speed rotation of impeller mechanism from residual mulching film, earth and residual mulching film is driven to advance from feed end to discharge end, in this process, earth can by the mesh of screen pack, and residual mulching film can't pass, be retained in screen pack, thus achieve being separated of earth and residual mulching film.Residual mulching film after separation still rests in screen pack, is driven and moves to discharge end from feed end, finally discharge from discharge end by impeller mechanism.

In order to be got rid of by separating degree earth as soon as possible, be that earth thin film separation machine can be worked continuously, the mixture of the earth film that continuous process is newly carried out, described housing bottom is provided with earth outlet.Like this from the earth that screen pack mesh filters away, the stop receiving housing is still retained in housing, and naturally falls under gravity, discharges, so just can ensure earth thin film separation machine continuous action from earth outlet.

In order to earth can be separated as much as possible with residual mulching film by the mode of patting at a high speed, and drive residual mulching film to move from feed end to discharge end, described impeller mechanism comprises impeller shaft and the many groups blade along impeller shaft distribution, described blade radially vertical distribution on impeller shaft, and there is the inclination angle that air is flowed from feed end to discharge end.Such earth film mixture, from after charging aperture enters, is patted at a high speed, in the process of patting by organizing blade step by step, earth is separated with residual mulching film, under the influence of centrifugal force, earth is thrown out of outside screen pack, and residual mulching film is then retained in inside screen pack.Blade has certain inclination angle, air can be driven to flow, and the flowing of air drives residual mulching film to move from feed end to discharge end, in the process of this movement, many groups blade realizes the beating step by step to earth film mixture, and earth is further separated with residual mulching film.

Be separated fully with earth to enable residual mulching film, remove the impurity such as the earth sticked on residual mulching film, and earth or sandstone etc. are patted into fragment simultaneously, enable the mesh by screen pack, the rotating speed of described impeller mechanism is between 1200 ~ 2000 revs/min, and described inclination angle is between 5 ~ 50 °.Under the beating of metal blade so at a high speed, can the earth of one-tenth block be patted pulverize, because residual mulching film has certain toughness, can not break under patting at a high speed.Blade is arranged to there is certain inclination angle, best inclination angle is 35 ~ 45 °, earth film mixture can be made progressively to advance, in the process that this mixture advances, by organizing the beating step by step of blade more, the earth sticked on residual mulching film further can both be removed, and leach from screen pack for every grade, finally only remaining residual mulching film and a small amount of earth.The very light in weight of residual mulching film, in the high speed winds pressure that blade rotation is brought, can get rid of from discharging opening fast.

In order to form the effect of patting step by step, described impeller mechanism comprises 2 ~ 8 groups of blades, and often organize blade and be equally spaced along impeller shaft, blade has identical inclination angle.The blade at many groups of identical inclination angles is equally spaced, and can form stable air-flow, and what the residual mulching film after guarantee is separated can be stable advances towards certain orientation, prevents flow-disturbing, residual mulching film can not be caused to be wound on impeller shaft.

In order to make earth as much as possible and discharge as soon as possible, do not make the mesh of residual mulching film plug filter net, described housing is overall is cylindrical shape, and earth outlet is arranged on below housing along housing axial distribution, screen pack is cylindrical shape steel wire screen cloth, and the distance of housing is between 3 ~ 30cm.The effect adopting steel wire screen cloth is exactly can enable not clapped broken finger stone to pass through, and can not remain in screen pack, and residual mulching film is driven quick rotation by impeller mechanism in this screen pack, can not block mesh because of inner and outer air pressure difference.The distance of screen pack and housing keeps certain distance, best between 10 ~ 20cm, remains with sufficient space and holds and clapped the earth that falls and sandstone passes through.Particularly near the front end of feed end, clapped the earth that falls and sandstone a lot of time, if this distance is too little, then earth and sandstone cannot be discharged fast, then can cause obstruction.Therefore larger distance is conducive to the separation of earth film mixture, but the volume in the too large then screen pack of distance will be restricted, reduce the ability of process mixture, therefore this distance still will keep moderate, through a large amount of experiments, inventor thinks that this distance remains in above-mentioned scope can ensure carrying out smoothly of operation.

In order to earth film mixture is sent into feed end fast, without the need to manual intervention, this system also comprises earth thin-film handling system, comprise transport tape and the shovel board being arranged on transport tape front end, described transport tape rear end is docked with described feed end, earth film mixture is sent into earth thin film separation mechanism.Although the earth that major part can be mingled with residual mulching film by soil scarifying rotary tillage induction system is before delivered on transport tape, but still there is part residual, by arranging shovel board, the deep ploughing degree of depth making shovel board be adjacent to soil scarifying rotary tillage induction system is advanced forward, earth residual like this and residual mulching film will be scooped up by shovel board, and progressively accumulate, until shovel board rear end, finally fall on conveyer belt.Earth film mixture is by the transmission of conveyer belt, and the feed end that automatically can fall into earth thin film separation mechanism is separated, and this process, without the need to manual intervention, realizes job stream aquation.

In order to scoop up earth film mixture smoothly and fully, this patent arranges described shovel board and shovels the native degree of depth between 25 ~ 35cm, and shovel board is inclined to set, and angle of inclination is between 20 ~ 40 °.Shoveling the native degree of depth is match with soil scarifying rotary tillage induction system above, and object is to be scooped up fully by the earth of scarifying, residual mulching film is reclaimed more thorough.Inclination angle is preferably between 25 ~ 35 °, and inclination angle is too little, earth fully cannot be scooped up, and inclination angle is too large, and the resistance of advancing just increases, and adds the burden of traction power, so should select within above-mentioned suitable scope.

In order to according to actual job situation, earth thin-film handling system described in this patent also comprises shovel board and shovels the native degree of depth and angle regulator.By the degree of depth and angle regulator can be real-time the degree of depth of adjustment shovel board shovel soil and angle, with the change of the degree of depth of the change of the height on applicable ground and deep ploughing, improve the adaptive capacity of equipment.

In order to improve the handling capacity of equipment to earth film mixture, improve separative efficiency, this patent can be set up in parallel multi-section earth thin film separation mechanism in frame, 2 ~ 4, ordinary circumstance bottom.These earth thin film separation mechanisms can share an earth thin-film handling system or be provided with independently earth thin-film handling system, when the earth cubic number processed is larger, earth film mixture is assigned to multi-section earth thin film separation mechanism and carries out detached job, the load of earth thin film separation mechanism of each portion can be reduced, improve the efficiency of process.

The present invention pats earth film mixture at a high speed by impeller mechanism, makes both be separated, and both is separated by screen pack.Earth film mixture is entered in housing can advance in a certain direction afterwards, patted by multistage high speed in traveling process, earth is separated with residual mulching film more thorough.Earth after separation exports by earth the farmland that automatically falls go back to, prevents soil erosion, and the residual mulching film after separation is transported to next Working mechanism and carries out packing recovery.Coordinate conveyer belt by shovel board, major part can be scooped up by the earth film mixture of deep ploughing, and be delivered to earth thin film separation mechanism and be separated.The resistance of traction can be reduced by the angle rationally arranging shovel board, multi-section earth thin film separation mechanism is set and can reduces load and raise the efficiency, use the minimum energy to be separated earth film mixture.

The selection by winnowing earth thin film separation system of machine for recycling mulch film group, its structure comprise there is charging aperture and discharging opening shell, screen cloth in the enclosure and blast machine are set, described screen cloth distributes along housing interior side-wall, keeps a distance with sidewall, and charging aperture connects blast machine.After earth thin film separation systematic position, residual mulching film is separated substantially, because earth thin film separation system adopts the wind-force of impeller mechanism to drive film to advance, so be separated after residual mulching film in be also mingled with part earth or sandstone, the present invention design object be exactly in order to thoroughly this earth or sandstone be separated from residual mulching film.Be mingled with the gas of residual mulching film by blast machine formation high pressure of earth or sandstone, residual mulching film and silt mixed airflow, pump into from the charging aperture of selection by winnowing earth thin film separation system, enter in screen cloth.This mixed airflow constantly flows in screen cloth, and earth or sandstone can pass through the mesh of screen cloth, and film can't pass, and is retained in screen cloth, thus achieves being separated of earth or sandstone and residual mulching film, and finally remaining film is discharged from discharging opening.

In order to improve the effect of separation, described housing tilt is arranged, and described charging aperture is arranged on shell lower end, and described discharging opening is arranged on shell upper end.By the setting of tilting, mixed airflow is upwards flowed from having a down dip, and earth or sandstone can fall under gravity naturally, and residual mulching film is comparatively light, will be taken to discharging opening by air-flow and discharge, by the difference of both weight, the effect of Appropriate application gravity realizes being separated, and saves the energy.

Described housing tilt angle should be reasonable, and general control is between 20 ~ 70 °, and angle is too little, then gravitational effects is not obvious, and angle is too large, then residual mulching film is not easy to discharge, preferably between 40 ~ 60 °.Another because earth or sandstone are by naturally falling under gravity after screen cloth, therefore shell lower end base arranges earth outlet, for sandstone next for separating treatment or earth being discharged in operation process, ensures to work continuously.

In order to improve separating effect further, this patent is provided with pivot post at described screen cloth center.Can rotate around pivot post in such mixed airflow flows in screen cloth, form centrifugal action, make separating effect more obvious.

In order to improve the spin effect of mixed airflow, described pivot post is provided with and promotes air along charging aperture one end towards the rotary flange of discharging opening one end movement or groove.Like this when mixed airflow flows around pivot post in screen cloth time, stable swirling eddy can be formed under the guiding of rotary flange or groove, prevent flow-disturbing and reduce from swirl effect.

In order to improve from swirl effect, and be conducive to film and finally discharge, described shell conically structure, sectional area reduces from charging aperture one end gradually towards discharging opening one end.The charging aperture of blast machine connected with outer casing front end, and shell is inclined to set, wind motive force is less more backward, therefore adopts conical shell can ensure also have larger wind motive force at outer casing back, and the residual mulching film being conducive to lighter in weight collects, discharge from discharging opening.

In order to make earth as much as possible and discharge as soon as possible, do not allow residual mulching film block the mesh of screen cloth, described screen cloth is conical steel wire screen cloth, distributes along outer casing inner wall.The effect adopting steel wire screen cloth is exactly can enable not clapped broken finger stone to pass through, and can not remain in screen cloth, and residual mulching film is driven quick rotation by high pressure draught in this screen cloth, can not block mesh because of inner and outer air pressure difference.

The distance of described screen cloth and shell is between 3 ~ 30cm, best between 15 ~ 25cm.Remain with sufficient space and hold separated earth and sandstone passes through.Particularly near the front end of shell, clapped the earth that falls and sandstone a lot of time, if this distance is too little, then earth and sandstone cannot be discharged fast, then can cause obstruction.Therefore larger distance is conducive to the separation of earth film mixture, but the volume in the too large then screen cloth of distance will be restricted, reduce the ability of process mixture, therefore this distance still will keep moderate, through a large amount of experiments, inventor thinks that this distance remains in above-mentioned scope can ensure carrying out smoothly of operation.

The finger stone that in mixed airflow, likely Particulate Inclusion is larger, these finger stones by the mesh of screen cloth, but cannot still be retained in the inside of screen cloth under gravity, can not discharge with residual mulching film from discharging opening.But after the time of operation one end, the amount of handstone runs up to certain degree just to be needed to clear out, and for this reason, this patent is provided with service port in described screen bottom, and service port is provided with closing door.Close during the closing door operation of service port, ensure carrying out smoothly of operation, but when needing to safeguard, open this closing door, just can remove the handstone being squeezed in filter screen bottom.

In order to improve the effect of separation, this patent charging aperture connects blast machine by an inflection shape airduct.The residual mulching film being mingled with earth or sandstone can be made in airduct to realize premixed with air by the airduct of inflection shape, because the effect of air to earth or sandstone is different to the effect of residual mulching film, under the effect of pressure-air, earth or sandstone can come off from film or be separated, in the process of movement, mix more even with air, premixed further increases follow-up separating effect.

The present invention makes to be clipped in the residual mulching film of earth or sandstone by blast machine and air forms mixed airflow, mixed airflow is flow at high speed in the filter screen of shell, earth or sandstone can be thrown away filter screen, and retain residual mulching film in filter screen, realize being separated of residual mulching film and earth.By arranging pivot post, adopting coniform shell and being obliquely installed, the effect of separation can be improved further, and be conducive to discharging from discharging opening after residual mulching film collects.The effect of Appropriate application gravity, can make earth or sandstone be separated fast with residual mulching film, and earth or sandstone is discharged.After this system, the earth be clipped in residual mulching film or sandstone are cleaned substantially, and residual mulching film directly can enter the packing operation of next stage.

The residual film of machine for recycling mulch film group is collected and compression packaging system, its structure comprises collector and baling press, the at least part of sidewall of described collector sidewall is inclined to set, sidewall is offered multiple pressure-releasing hole, residual film entrance is arranged on sidewall, sidewall bottom forms the outlet of residual film, and baling press is connected in the outlet of residual film.Only remaining residual mulching film substantially after selection by winnowing earth thin film separation system, the wind-force that selection by winnowing earth thin film separation system is formed promote under, residual mulching film enters collector from residual film entrance.Unnecessary wind-force discharges through the pressure-releasing hole of collector, and residual mulching film is then blocked in collector, naturally falls under gravity.The residual mulching film fallen can be collected to residual film exit by the setting of sloped sidewall, is packaged into whole bundle after being compressed by residual mulching film by Horizontal hydraulic package machine.

In order to improve the efficiency of collection, collector described in this patent is funnel-shaped structure, and multiple pressure-releasing hole that sidewall is offered form ventilative network structure.Wind-force can discharge by cancellated collector fast, funnel shaped structure enable residual mulching film fast and concentrate be pooled to residual film exit, substantially increase disposal ability and the efficiency of equipment like this.

Because residual mulching film is very light, in order to prevent the wind-force newly entered from producing of short duration flow-disturbing in collector, the residual mulching film fallen is blown afloat again, reduce the efficiency of collecting, collector end face described in this patent is network structure, and described residual film entrance tilts upward.Whole like this collector is network structure, and wind-force direction is directly just to network structure, and wind-force is able to quick release after entering collector.Wind-force direction tilts upward in addition, can not affect the residual mulching film that other have fallen after release of pressure when entering.

Because residual film outlet is the rectangle structure distributed bottom collector, the hydraulic stem of baling press constantly moves back and forth in this residual film outlet below, compressed by residual mulching film, in order to the rear end preventing the residual mulching film fallen from entering push rod, sideboard is located in the residual film exit of described collector.This sideboard is connected on the hydraulic stem of baling press, by the driving back and forth of hydraulic stem, controls it and closes or open the outlet of residual film.Like this when hydraulic stem push ahead compression residual mulching film time, other residual mulching films fallen stop by baffle plate, the rear end of hydraulic stem would not be fallen into, enable the reciprocating of hydraulic stem fast free, raise the efficiency.

In order to the earth of discharging after previous systems process being calmed down, entirely film-recovering machine group is through Land leveling afterwards, so that plantation, native system is as last procedure of whole unit, also comprise level land mechanism, described level land mechanism is arranged on the below of baling press.The earth of discharging before can be struck off by level land mechanism, make ground recover smooth.

In order to improve smooth effect, described level land mechanism comprises at least two-layer level land scraper plate be set up in parallel.By multilayer level land scraper plate, smooth effect can be improved further.Concrete structure can be that every layer of level land scraper plate is V-shaped, and the length of rear side level land scraper plate is greater than level land, front side scraper plate; Or multilayer level land scraper plate is dip-parallel setting, the length of rear side level land scraper plate is greater than level land, front side scraper plate.

The present invention discharges blast by collector, make residual mulching film naturally fall under gravity and be collected to bottom collector, packed by baling press, whole operation process completes automatically, without the need to manual intervention, can continuous action, ensure that a large amount of residual mulching films that machine for recycling mulch film group reclaims can be packaged into the bundle shape structure of being convenient to transport fast, effectively avoid the residual mulching film collecting to be scattered contaminated environment everywhere.In order to improve the efficiency of recovery, adopt cancellated collector, and wind-force direction is tilted upward, eliminate flow-disturbing, reduce the negative effect produced.Packing operation can be made efficient for increase sideboard and continuous print carries out, and reduces manual intervention.Increasing earth that entirely film-recovering machine group discharges by level land mechanism or sandstone does last smooth, facilitates cultivating of next step.

Summary of the invention

Technical problem to be solved by this invention overcomes above-mentioned defect of the prior art, provide a kind of can not only earth's surface and can carry out in the residual mulching film of underground the residual mulching film recovery method that reclaims by burying and reclaim unit.

The present invention is achieved through the following technical solutions above-mentioned purpose.

The present invention devises a kind of residual mulching film recovery method, specifically comprises the following steps:

S1. earth's surface is contained the dirt bed scarifying of residual mulching film;

S2. the earth of scarifying is scooped up in the lump together with residual mulching film;

S3. by beating, residual mulching film is come off from earth in the earth scooped up and residual mulching film, and carry out centrifugation residual mulching film and earth;

S4. residual mulching film is collected.

Accompanying drawing explanation

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

Fig. 2 is the structural representation of Pa Ju mechanism of deep ploughing in embodiment.

Fig. 3 is the structural representation of rotary blade wheel mechanism in embodiment.

Fig. 4 is the structural representation of embodiment impeller mechanism.

Fig. 5 is the interior schematic diagram of embodiment earth thin film separation mechanism.

Embodiment

Below in conjunction with above-mentioned accompanying drawing citing, this patent is described further.Embodiment is used for example and illustrates that the above-mentioned accompanying drawing adopted is only for exemplary illustration, can not be interpreted as the restriction to this patent; In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.

Machine for recycling mulch film group as shown in Figure 1, its front end is provided with soil scarifying rotary tillage induction system 100, and this system is used for the earth scarifying of following for earth's surface certain depth, fragmentation be delivered in earth thin film separation system 200 thereafter and do further process.Described soil scarifying rotary tillage induction system 100 comprises the deep ploughing Pa Ju mechanism be arranged in traction frame, rotary blade wheel mechanism and actuating unit, and deep ploughing Pa Ju mechanism is arranged on before rotary blade wheel mechanism, and described actuating unit drives rotary blade wheel mechanism.

Described traction frame comprises mainframe 111 and lifting support 112, support wheel 113 is provided with below mainframe 111, described lifting support 112 is arranged on relative mainframe 111 on mainframe 111 and is elevated, and described deep ploughing Pa Ju mechanism and rotary blade wheel mechanism are arranged on reverse U shape lifting support.Mainframe 111 is the main body of whole unit, for supporting each system, can be advanced towards a direction by traction engine frame 111 by equipment such as tractors.Lifting support 112 is controlled hydraulic crane, for support deep ploughing Pa Ju mechanism and rotary blade wheel mechanism carry out Height Adjustment.When soil scarifying rotary tillage induction system 100 operation, to deep ploughing Pa Ju mechanism be supported and rotary blade wheel mechanism drops to its rake tool and cutter gos deep into the degree of depth of below earth's surface h, as shown in the figure, lifting support 112 can control the degree of depth that these two kinds are goed deep into ground, to be suitable for the use of the farmland of different pollution level.

Described actuating unit is arranged in traction frame, as shown in the figure, comprise diesel engine 121 and gearbox 122, diesel engine 121 provides power to gearbox 122, gearbox 122 drives rotary blade wheel mechanism to rotate by driving-belt 123, rotating speed, between 300 ~ 500 revs/min, can adjust its rotating speed according to practical situations.

As shown in Figure 2, deep ploughing Pa Ju mechanism comprises the subsides ground accessory whorl 131 of both sides and is distributed in the rake tool 132 pasted between ground accessory whorl 131, the described ground accessory whorl 131 that pastes is adjacent to the stable scarifying earth of ground supports rake tool 132, the degree of depth in rake tool 132 scarifying soil is 30cm the most deeply, can be adjusted the degree of depth of its deep ploughing by lifting support 112.Deep ploughing Pa Ju mechanism is connected with traction frame by hydraulic spring grease cup damping 133, makes in operation process, and deep ploughing Pa Ju mechanism can be adjacent to ground and advance.

In conjunction with as shown in Figure 3, the much knives tool 142 that described rotary blade wheel mechanism comprises cylindrical shape main wheel 141 and is distributed on cylindrical shape main wheel 141.Cylindrical shape main wheel 141 passes through driving-belt 123 and drives, and is in same level is adjacent to ground advances with subsides ground accessory whorl 131.Described cutter 142 comprises staggered rimmer knife tool 1421 and short sword tool 1422 in isosceles triangle.Described cutter 142 is curved, and cylindrical shape main wheel 141 radially distributes, and the length of rimmer knife tool 1421 is 30cm, and the length of short sword tool 1422 is 15cm.Above cylindrical shape main wheel 141 and cutter 142, semi-surrounding is provided with mud guard 144, mud guard 144 opening portion is towards earth thin film separation system 200.Rotary blade wheel mechanism is connected with traction frame by hydraulic spring grease cup damping 143.

Above-mentioned soil scarifying rotary tillage induction system 100, this system is used for the earth scarifying of following for earth's surface certain depth, fragmentation be delivered in earth thin film separation system 200 thereafter and do further process.Described earth thin film separation system 200 comprises two the earth thin film separation mechanisms and an earth thin-film handling system that are set up in parallel, and should both be installed in traction frame, described earth thin-film handling system is arranged on the front end of earth thin film separation mechanism.

Described earth thin-film handling system comprises transport tape 221 and is arranged on the shovel board 222 of transport tape 221 front end, shovel board 222 is inclined to set, and the shovel board being provided with hydraulic control shovels the native degree of depth and angle regulator 223, by this device, shovel board can be controlled and shovel the native degree of depth between 25 ~ 35cm, match with the deep ploughing degree of depth of soil scarifying rotary tillage induction system 100, angle of inclination is between 25 ~ 35 °.Like this, in the process of advancing, directly thrown on transport tape 221 by the earth film mixture that soil scarifying rotary tillage induction system 100 digs, by not scooped up by the residual earth film mixture dug, finally also can be fallen on conveyer belt 221 and transmitting by the shovel board 222 be obliquely installed.

Described earth thin film separation mechanism comprises the housing 211 with feed end 213 and discharge end 214, the screen pack 212 be arranged in housing 211, is arranged on the actuating unit that impeller mechanism in screen pack 212 and impeller mechanism rotate, described transport tape 221 rear end is docked with described feed end 213, earth film mixture is sent into earth thin film separation mechanism.The rotating speed of impeller mechanism is 1800 revs/min, the seven groups of blades 216 comprising impeller shaft 215 and distribute along impeller shaft 215.As shown in Figure 4, described blade 216 radially vertical distribution on impeller shaft 215, often organize blade 216 and be equally spaced along impeller shaft 215, blade 216 has 45 ° of identical inclination angles, and air can be driven to flow from feed end 213 to discharge end 214.Shown in composition graphs 5, housing 211 is overall is cylindrical shape, and bottom is provided with the earth outlet 2111 along housing axial distribution.Screen pack 212 adopts cylindrical shape steel wire screen cloth, and screen pack 212, along the distribution of housing 211 madial wall, keeps the distance d of 15cm with sidewall.

After earth film mixture is carried by transport tape 221, enter in housing 211 to screen pack 212 from charging aperture 213, impeller mechanism carries out high-speed rotation beating to earth film mixture.Blade 216 and the earth film mixture of high-speed rotation are collided and its earth are come off from residual mulching film, and promote this mixture and advance around central rotation in housing 211.In this traveling process, earth can by the mesh of screen pack 212, and residual mulching film cannot pass through, thus realizes being separated of earth and residual mulching film.Earth after separation, between screen pack 212 and housing 211, under gravity, is discharged from the earth outlet bottom housing 212, is fallen after rise to farmland.And residual mulching film is under the effect of impeller mechanism, continue to advance in screen pack 212, through the beating of multistage blade 216, the most of earth fallen to sticking on residual mulching film can be clapped, earth and sandstone are leached by screen pack 212, final only remaining residual mulching film is discharged to discharge end 214, sends into next mechanism.

It for being separated by the residual mulching film be mixed in earth, and is separated with earth by described earth thin film separation system 200.Residual mulching film after separation is mingled with a certain amount of earth and sandstone, is sent in selection by winnowing earth thin film separation system 300 and does further to be separated.

The selection by winnowing earth thin film separation system 300 of described machine for recycling mulch film group comprises one in 60 ° of coniform shells be obliquely installed 311, this shell 311 has charging aperture 313 and discharging opening 314, described charging aperture 313 connects a blast machine 320 by an inflection shape airduct 330, butts up against in earth thin film separation system 200.The cross-sectional area of described coniform shell 311 from bottom to top reduces, charging aperture 313 is arranged on the top of shell 311 lower end, residual mulching film after earth thin film separation system 200 processes and the earth be mingled with thereof or sandstone are entered shell 311 by inflection shape airduct 330 pump pressure by blast machine 320, residual mulching film and earth or sandstone in inflection shape airduct 330 through the pump pressure of pressure-air, abundant separation also in air mixing, forms high pressure residual mulching film earth or sandstone mixed airflow.

Described shell 311 is provided with the screen cloth 312 that a taper shape is made up of steel wire screen cloth with one heart, and screen cloth 312, along the distribution of shell 311 inwall, keeps 20cm distance with sidewall.At the center of screen cloth 312, along shell 311 axis direction, be provided with a pivot post 340, pivot post 340 is circumferentially with the helical flange guiding air to flow from shell 311 lower end to upper end.Discharging opening 314 is arranged on the upper end of shell 311, matches with the end of screen cloth 312.The bottom of shell 311 lower end is provided with earth outlet 315.Screen cloth 312 lower end base is provided with service port, and service port is provided with closing door 316, and in the process of operation, described closing door 316 is in closing state.

Above-mentioned mixed airflow enters to the inside of screen cloth 312 from charging aperture 313, due to the effect of high pressure draught, drives residual mulching film and earth or sandstone to rotate around pivot post 340, and to be led rotational flow from below to up by the flange on pivot post 340.Mixed airflow is in the process of rotational flow, and earth or sandstone are filtered off through the mesh of screen cloth 312, and residual mulching film is comparatively large due to volume, is retained in screen cloth 312 inner.In addition because residual mulching film is comparatively light due to gravity, upwards boosted fast, be collected to discharging opening 314 place and discharge.And earth or sandstone are comparatively large due to weight, after the power of being centrifuged throws away screen cloth 312, along sidewall landing in shell 311, discharge from earth outlet 315.The handstone that partial particulate is larger, by the mesh of screen cloth 312, cannot be retained in the bottom in screen cloth 312, when collect reach a certain amount of time, by opening the closing door 316 of service port, handstone larger for these particles can be cleared.

Film after separation the wind-force that formed by selection by winnowing earth thin film separation system 300 bring residual film into and collect and in compression packaging system 400, carry out last collection.

Described residual film is collected and compression packaging system as shown in the figure, comprises and is arranged on collector 410 on towing bracket, baling press 420 mechanism 430 pacifically.Described collector 410 sidewall is provided with residual film entrance 411 and is connected with selection by winnowing earth thin film separation system 300, and residual film entrance 411 tilts upward, and residual mulching film is entered in collector 410 by this residual film entrance 411.Be provided with residual film outlet 412 bottom collector 410 to be connected with baling press 420, enter baling press 420 from this residual film outlet 412 after residual mulching film collects and compressed and be packaged as whole bundle.Level land mechanism 430 is arranged on the below of baling press 420, carries out smooth, cultivate so that ensuing for the earth of the earth of soil scarifying rotary tillage induction system 100 scarifyings, earth thin film separation system 200 and selection by winnowing earth thin film separation system 300 being discharged.

Concrete structure is, at least part of sidewall of described collector 410 sidewall is inclined to set, and forms funnel-shaped structure.Sidewall and the end face of collector 410 are network structure, form multiple pressure-releasing hole.After the wind-force of selection by winnowing earth thin film separation system 300 drives residual mulching film to enter from residual film entrance 411, wind-force can be discharged fast by cancellated sidewall and end face, residual mulching film under gravity, falls along sidewall, is collected to the residual film outlet 412 bottom collector 410.Described residual film exports 412 places and is located at sideboard, and this sideboard is connected on the hydraulic stem of baling press, by the driving back and forth of hydraulic stem, controls it and closes or open the outlet of residual film.This sideboard can prevent in the process of compression residual mulching film, and the residual mulching film newly fallen is fallen after hydraulic stem by residual film outlet 412, ensures carrying out smoothly of compression.

Described level land mechanism 430 comprises the two-layer level land scraper plate be set up in parallel, and two-layer level land scraper plate is dip-parallel setting, and the length of rear side level land scraper plate is greater than level land, front side scraper plate.Like this when the earth on level land is more time, the earth accumulation formed at ground floor scraper edge can be calmed down again by second layer scraper plate, improves planarization effects.

Describe in above-mentioned accompanying drawing position relationship for only for exemplary illustration, the restriction to this patent can not be interpreted as; Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.

Claims

1. a residual mulching film recovery method, comprises the following steps:

S4. residual mulching film is collected;

It is characterized in that in described step S3, centrifugation comprises the following steps:

S31. pat earth and residual mulching film by impeller mechanism, drive earth and residual mulching film to rotate simultaneously and carry out centrifugal first separation;

S32. the residual mulching film after being separated by wind drive and the earth be mixed in residual mulching film carry out centrifugal secondary separation of spinning.

2. residual mulching film recovery method according to claim 1, to it is characterized in that in described step S3 in centrifugal separation processes, earth and residual mulching film are placed in the double-layer cavity that internal layer shell is hollow out housing and rotate, centrifugal force makes earth through hollow out housing, and residual mulching film is stopped by hollow out housing, is retained in hollow out housing, realize two kinds of separation.

3. residual mulching film recovery method according to claim 1, is characterized in that:

Continuously earth's surface is contained the dirt bed scarifying of residual mulching film in described step S1;

Continuously the earth of scarifying is scooped up in the lump together with residual mulching film in described step S2;

The earth separated in described step S3 is directly expelled to earth's surface, and calms down.

4. residual mulching film recovery method according to claim 3, is characterized in that in step S31, the air-flow of the screw propulsion formed by impeller mechanism, drives earth and residual mulching film to advance, in traveling process, carries out centrifugal first separation.

5. residual mulching film recovery method according to claim 3, is characterized in that driving residual mulching film and the earth spiral inclination be mixed in residual mulching film upwards to advance by wind-force in step s 32, in traveling process, carries out centrifugal secondary separation.

6. the residual mulching film recovery method according to any one of claim 1 ~ 3, is characterized in that the degree of depth of scarifying earth in described step S1 is between 25 ~ 35cm.

7. the residual mulching film recovery method according to any one of claim 1 ~ 3, is characterized in that described step S2 comprises the following steps:

S21. the earth of scarifying is carried out the step cut;

S22. the step will scooped up in the lump together with residual mulching film through scarifying or the earth that cuts.

8. residual mulching film recovery method according to claim 7, is characterized in that being that the much knives tool that the cylindrical shape main wheel being 250 ~ 800 revs/min by rotating speed drives cuts earth by the step that the earth of scarifying carries out cutting in described step S21.

9. the residual mulching film recovery method according to any one of claim 1 ~ 3, is characterized in that described step S4 comprises the following steps:

S41. the residual mulching film that air-flow drives is carried out the step of release of pressure;

S42. the step that residual mulching film carries out packing is automatically collected.

10. residual mulching film recovery method according to claim 9, is characterized in that being imported in a hollow out recovery cavity by the residual mulching film driven by air-flow in described step S41 carrying out release of pressure.

11. 1 kinds of recovery units being applicable to the residual mulching film recovery method described in any one of claim 1 ~ 10, traction frame is provided with following system:

The earth scooped up and residual mulching film are carried out the centrifugal separation system of centrifugation; Collect and compression packaging system with by collected for the residual mulching film after being separated residual film;

It is characterized in that described centrifugal separation system comprises:

Pat earth and residual mulching film, drive earth and residual mulching film to rotate the earth thin film separation system of carrying out centrifugal first separation simultaneously; To carry out spinning the selection by winnowing earth thin film separation system of centrifugal secondary separation with driving the residual mulching film after being separated and the earth be mixed in residual mulching film.

12. recovery units according to claim 11, it is characterized in that described soil scarifying rotary tillage induction system comprises the deep ploughing Pa Ju mechanism be arranged in traction frame, rotary blade wheel mechanism and actuating unit, deep ploughing Pa Ju mechanism is arranged on before rotary blade wheel mechanism, and described actuating unit drives rotary blade wheel mechanism.

13. recovery units according to claim 12, is characterized in that described rotary blade wheel mechanism comprises cylindrical shape main wheel and is distributed in the much knives tool on cylindrical shape main wheel.

14. recovery units according to claim 13, is characterized in that described cutter comprises staggered rimmer knife tool and short sword tool.

15. recovery units according to claim 14, is characterized in that described rimmer knife tool and short sword tool are that isosceles triangle is staggered.

16. recovery units according to claim 14, is characterized in that the length of described rimmer knife tool is between 25 ~ 35cm, and the length of described short sword tool is between 10 ~ 20cm, and the degree of depth in the scarifying soil of described deep ploughing Pa Ju mechanism is between 25 ~ 35cm.

17. recovery units according to claim 13, is characterized in that described cutter is curved, cylindrical shape main wheel radially distribute, and the rotating speed of cylindrical shape main wheel is 250 ~ 800 revs/min.

18. recovery units according to claim 13, it is characterized in that deep plough the subsides ground accessory whorl that Pa Ju mechanism comprises both sides and the rake tool be distributed between subsides ground accessory whorl, described subsides ground accessory whorl and cylindrical shape main wheel are on sustained height, and the degree of depth in described rake tool scarifying soil is between 25 ~ 35cm.

19. recovery units according to any one of claim 12 ~ 18, it is characterized in that described traction frame comprises mainframe and lifting support, support wheel is provided with below mainframe, described lifting support is arranged on relative mainframe lifting on mainframe, and described deep ploughing Pa Ju mechanism and rotary blade wheel mechanism are arranged on reverse U shape lifting support.

20. recovery units according to any one of claim 12 ~ 18, is characterized in that deep ploughing Pa Ju mechanism and rotary blade wheel mechanism are by pasting ground damping and drawing frame and be connected.

21. recovery units according to any one of claim 13 ~ 18, is characterized in that described rotary blade wheel mechanism is also included in the mud guard arranged in semi-surrounding above cylindrical shape main wheel and cutter.

22. recovery units according to claim 11, it is characterized in that described earth thin film separation system comprises earth thin film separation mechanism, described earth thin film separation mechanism comprises the housing with feed end and discharge end, the screen pack be arranged in housing, is arranged on the actuating unit that impeller mechanism in screen pack and impeller mechanism rotate, described screen pack, along the distribution of case inside wall, keeps a distance with sidewall.

23. recovery units according to claim 22, is characterized in that described housing bottom is provided with earth outlet.

24. recovery units according to claim 22, it is characterized in that described impeller mechanism comprises impeller shaft and the many groups blade along impeller shaft distribution, described blade radially vertical distribution on impeller shaft, and there is an inclination angle that air is flowed from feed end to discharge end.

25. recovery units according to claim 24, it is characterized in that the rotating speed of described impeller mechanism is between 1200 ~ 2000 revs/min, described inclination angle is between 5 ~ 50 °.

26. recovery units according to claim 25, is characterized in that described impeller mechanism comprises 2 ~ 8 groups of blades, and often organize blade and be equally spaced along impeller shaft, blade has identical inclination angle.

27. recovery units according to claim 23, it is characterized in that described housing for overall be cylindrical shape, earth outlet is arranged on along housing axial distribution below housing, and screen pack is cylindrical shape steel wire screen cloth, and the distance of housing is between 3 ~ 30cm.

28. recovery units according to any one of claim 22 ~ 27, characterized by further comprising earth thin-film handling system, comprise transport tape and the shovel board being arranged on transport tape front end, described transport tape rear end is docked with described feed end, earth film is sent into earth thin film separation mechanism.

29. recovery units according to claim 28, it is characterized in that described shovel board shovels the native degree of depth between 25 ~ 35cm, shovel board is inclined to set, and angle of inclination is between 20 ~ 40 °.

30. recovery units according to claim 28, is characterized in that described earth thin-film handling system also comprises shovel board and shovels the native degree of depth and angle regulator.

31. recovery units according to any one of claim 22 ~ 27, is characterized in that comprising the multi-section earth thin film separation mechanism be set up in parallel.

32. recovery units according to claim 11, it is characterized in that described selection by winnowing earth thin film separation system comprise there is charging aperture and discharging opening shell, screen cloth in the enclosure and blast machine are set, described screen cloth distributes along housing interior side-wall, keep a distance with sidewall, charging aperture connects blast machine.

33. recovery units according to claim 32, it is characterized in that described housing tilt is arranged, described charging aperture is arranged on shell lower end, and described discharging opening is arranged on shell upper end.

34. recovery units according to claim 33, it is characterized in that described housing tilt angle is between 20 ~ 70 °, lower end base is provided with earth outlet.

35. recovery units according to claim 32, is characterized in that described screen cloth center is provided with pivot post.

36. recovery units according to claim 35, is characterized in that described pivot post is provided with and promote air along charging aperture one end towards the rotary flange of discharging opening one end movement or groove.

37. recovery units according to any one of claim 32 ~ 36, it is characterized in that described shell conically structure, sectional area reduces from charging aperture one end gradually towards discharging opening one end.

38. according to recovery unit according to claim 37, it is characterized in that described screen cloth is conical steel wire screen cloth, distributes along outer casing inner wall.

39. according to recovery unit according to claim 38, it is characterized in that the distance of described screen cloth and shell is between 3 ~ 30cm.

40. according to recovery unit according to claim 38, and it is characterized in that described screen bottom is provided with service port, service port is provided with closing door.

41. recovery units according to any one of claim 32 ~ 36, is characterized in that described charging aperture connects blast machine by an inflection shape airduct.

42. recovery units according to claim 11, it is characterized in that described residual film is collected and compression packaging system comprises collector and baling press, the at least part of sidewall of described collector sidewall is inclined to set, sidewall is offered multiple pressure-releasing hole, residual film entrance is arranged on sidewall, sidewall bottom forms the outlet of residual film, and baling press is connected in the outlet of residual film.

43. recovery units according to claim 42, is characterized in that described collector is funnel-shaped structure, and multiple pressure-releasing hole that sidewall is offered form ventilative network structure.

44. recovery units according to claim 43, is characterized in that described collector end face is network structure.

45. recovery units according to claim 44, is characterized in that described residual film entrance tilts upward.

46. recovery units according to any one of claim 42 ~ 45, is characterized in that sideboard is located in the residual film exit of described collector.

47. recovery units according to claim 46, is characterized in that described sideboard is connected on the hydraulic stem of baling press, by the driving back and forth of hydraulic stem, control it and close or open the outlet of residual film.

48. recovery units according to any one of claim 42 ~ 45, characterized by further comprising level land mechanism, described level land mechanism is arranged on the below of baling press.

49. recovery units according to claim 48, is characterized in that described level land mechanism comprises at least two-layer level land scraper plate be set up in parallel.

50. recovery units according to claim 49, is characterized in that described every layer of level land scraper plate is V-shaped, and the length of rear side level land scraper plate is greater than level land, front side scraper plate.

51. recovery units according to claim 49, is characterized in that described multilayer level land scraper plate is dip-parallel setting, and the length of rear side level land scraper plate is greater than level land, front side scraper plate.