A kind of damaged film gathering method
Technical field
The residual mulch film that the invention belongs in the agricultural machinery reclaims technology, specifically, relates to a kind of damaged film gathering method.
Background technology
During the plastic mulching plantation, though improved the output of crops, left over a large amount of residual films in soil, this has obviously hindered agriculture sustainable development.
For solving the residual film leftover problem in the soil, have a lot of people to design many kinds of damaged film gathering machineries for this reason, summarize and get up to mainly contain three classes, promptly seedling stage memebrance picking-up mechanism, memebrance picking-up mechanism and broadcast preceding memebrance picking-up mechanism after autumn.But because all there are some defectives miscellaneous in existing damaged film gathering machinery, thereby fail by large scale application.
From Chinese agricultural machanization, 2004, (6), 68~71, " residual film recovery craft discussion " and agricultural research, 2004, (6), 72~73, the preliminary step that must have known residual film recovery technology is in " residual film reclaims technology and plastic film residue collect mechanism " and other open source information: the limit film loosens the soil, and--residual film holds up, and----taking off (unloading) film--collects film to choose film; Wherein determine its step of picking up of receiving the film effect to be:--demoulding--collects film to choose film.The test that existing elastic claw type is picked up membrane element shows that existing residual film reclaims the problem that technology especially fails to solve film, soil separation and the residual film twining movement part of provoking residual film.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of work simplification is provided, makes that complete machine structure is simple, functional reliability is high, pick up the good damaged film gathering method of film properties.
The realization of the object of the invention comprises the steps:
(1), chooses film: under the drive of transmission mechanism, the elastic claw that is provided with on the film device is picked up in the film device drive of picking up by higher rotation speed, when elastic claw buries and is perpendicular to the ground, the linear velocity direction on elastic claw top is opposite with the direction of advance of picking up the work of film machine, by the distortion of elastic claw and the linear velocity of elastic claw top 10~30 meter per seconds, most of residual film in the soil is chosen in the air, thereby reached film and native centrifugation;
(2), collection film: travel forward when the film machine is worked by picking up, the collection film device together travels forward with picking up the film machine, and the air-flow of the generation that travels forward when utilizing the showy property of the residual film of being provoked and picking up the work of film machine is blown into residual film in the collection film device naturally.
Another kind of method as realizing the object of the invention comprises the steps:
(1), chooses film: under the drive of transmission mechanism, the elastic claw that is provided with on the film device is picked up in the film device drive of picking up by higher rotation speed, when elastic claw buries and is perpendicular to the ground, the linear velocity direction on elastic claw top is opposite with the direction of advance of picking up the work of film machine, by the distortion of elastic claw and the linear velocity of elastic claw top 10~30 meter per seconds, most of residual film in the soil is chosen in the air, thereby reached film and native centrifugation;
(2), collection film: blower fan or the air-supply arrangement supporting with the machine of picking up provide the air-flow of speed at 3~20 meter per seconds, the air-flow that this blower fan or air-supply arrangement provide can function as follows: at first be to form one certain thickness air cushion is arranged on the ground of working region, make that being thrown aerial mulch film is difficult for the ground that falls go back to; Next is a showy property of utilizing residual film, throws the further skinning of residual film in the air, native centrifugation to picking up film device; Be to be blown in the collection film device at last throwing aerial residual film.
The present invention, to the direction of air current flow of collection membrane process can be from bottom to top, by after forward with by in the side direction, the air-flow controlling party be to can being one or more combinations, supporting blower fan or air-supply arrangement can be arranged at pick up film device the rear portion or/and left and right side.
The present invention reclaims technology with existing residual film and the recovery machine is compared, and its innovative point is:
1, the step of existing known residual film recovery technology is: the limit film loosens the soil, and--residual film holds up, and----taking off (unloading) film--collects film to choose film; Wherein determine its step of picking up of receiving the film effect to be:--demoulding--collects film to choose film, and the film device of picking up of known elastic claw type machine for recovering broken film is subjected to traditional concept to fear the constraint of rupture of membranes, and its rotating speed is very low, and the linear velocity on elastic claw top is less than 10 meter per seconds; The present invention then acts in a diametrically opposite way, breakthrough to gathering method, it is that the linear velocity on elastic claw top is brought up to 10~30 meter per seconds that key is to utilize the high speed rotating of picking up film device that elastic claw is housed, obtained good effect, successfully solved and residual film provoked from soil and film soil separates and the problem of residual film twining movement part, the film method of picking up of the present invention needn't have been simplified mechanical part via taking off (unloading) membrane process;
2, the high velocity air that adopts supporting blower fan or air-supply arrangement to provide forms an air cushion to residual film and utilizes the floatation characteristic of residual film self, play the effect of film, soil separation once more, and isolated residual film is blown in the collection film device, be convenient to residual film and reclaim the back regeneration.
So the present invention because work simplification, make complete machine structure simple, has the functional reliability height, picks up the good advantage of film properties, is applicable to design after autumn memebrance picking-up mechanism and broadcast preceding memebrance picking-up mechanism.
The present invention is further illustrated in conjunction with the accompanying drawings for following embodiment.
Description of drawings
Fig. 1 is the operation principle schematic diagram of one embodiment of the present of invention.
Among the figure, 1, frame, 2, transmission mechanism, 3, pick up film device, 4, elastic claw, 5, blower fan, 6, air cushion, 7, the collection film device, 8, eyelet, 9, residual film;
X
1, pick up the direction of advance of film machine work, the linear velocity direction on X, elastic claw top, the linear velocity on v, elastic claw top, X
2, air current flow direction, the embedded depth of h, elastic claw.
Embodiment
Embodiment: a kind of damaged film gathering method
Comprise the steps:
(1), chooses film: under the drive that is installed on the transmission mechanism 2 on the frame 1, the three row's elastic claws 4 that are provided with on the film device are picked up in film device 3 drives of picking up by higher rotation speed, the elastic claw diameter is 5 millimeters, when elastic claw 4 buries and when perpendicular to the ground, the linear velocity direction X on elastic claw top with pick up the direction of advance X of film machine work
1On the contrary, the linear velocity v=25 meter per second on elastic claw top, by distortion and its higher linear velocity of elastic claw, choose the most of residual film in the soil in the air when work embedded depth h=5~10 of elastic claw centimetre, thereby reach the centrifugation of film and soil;
(2), collection film: by providing the air-flow of speed at 8~10 meter per seconds, the direction X of air current flow apart from the blower fan 5 of picking up 1.0 meters of film device
2With the direction of advance X that picks up the work of film machine
1Identical, the air-flow that this blower fan provides can function as follows: at first be to form one certain thickness air cushion 6 is arranged on the ground of working region, make that being thrown aerial mulch film is difficult for the ground that falls go back to; Next is a showy property of utilizing residual film, throws the further skinning of residual film in the air, native centrifugation to picking up film device; Be to be blown in the collection film device 7 throwing aerial residual film 9 at last, the area of eyelet 8 is 1.5 square centimeters on this collection film device, and this collection film device mainly plays a part to collect residual film and separate floating dust.