Corn straw layered returning device

Abstract

The present application relates to the technical field of crop recycling processing, in particular to a corn straw layered returning to field device, which comprises a moving frame with an inverted concave structure and an operating frame with a rectangular structure sleeved outside the moving frame, a cylinder is arranged between the top inner wall of the operating frame and the top of the moving frame through a push rod, a concave stirring frame is embedded in the center of the bottom inner wall of the operating frame, a rectangular hollow slot is arranged on one side of the stirring frame, a layered pretreatment mechanism is arranged in the rectangular hollow slot, and a dynamic stirring mechanism and an intermittent pressing mechanism are arranged in the stirring frame; the layered pretreatment, dynamic crushing and stirring and spraying and pressing double processing modes are cooperatively arranged to solve the problems of uneven distribution of straw and low deep degradation efficiency, which is beneficial to realize the layered and uniform returning to field effect of corn straw and significantly improve the soil improvement effect.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of crop recycling, in particular to a corn straw layered returning to field device. BACKGROUND

[0002] In traditional agricultural production, corn straw is often regarded as waste, and a large amount of burning or random stacking not only leads to resource waste, but also causes environmental problems such as air pollution and soil degradation. With the continuous promotion of agricultural green development, straw resource utilization has become a key link in agricultural development.

[0003] Among them, straw returning to field can directly increase soil organic matter, improve soil structure and reduce dependence on chemical fertilizers, and is considered as one of the most economical and effective utilization methods. At present, corn straw returning to field technology mainly includes direct pulverization returning to field, covering returning to field, composting returning to field and over-oral returning to field. Direct pulverization returning to field is the most widely used (accounting for more than 60%), but it still needs to be optimized in terms of accelerating straw decomposition and layering distribution. For details, please refer to the corn straw returning to field device with the patent number CN116267188A.

[0004] The patent is through feed adjustment and spraying wetting, aiming to accelerate the straw decomposition and processing rate. However, it lacks layered treatment effect of straw, which easily leads to excessive accumulation of straw on the surface of the land and insufficient straw in the deep layer, greatly affecting the improvement effect of the deep soil.

[0005] In addition, the distribution and compaction effect of straw are also insufficient, which only relies on spraying wetting and lacks necessary compaction treatment process, easily leading to loose distribution of straw and affecting the fusion effect of straw and soil, thereby reducing the decomposition rate and soil improvement effect. SUMMARY

[0006] The purpose of the application is to solve the problems of uneven distribution of straw and low deep layer degradation efficiency by the synergistic setting of layered pretreatment, dynamic crushing and poking and spraying and pressing dual treatment modes, which is beneficial to realize the layered and uniform returning to field effect of corn straw and significantly improve the soil improvement effect.

[0007] The purpose of the application can be realized by the following technical scheme: a corn straw layered returning to field device, comprising a mobile frame with a reverse concave structure and an operation frame with a rectangular structure sleeved outside the mobile frame, a gas cylinder is arranged between the top inner wall of the operation frame and the top of the mobile frame through a push rod, a poking frame with a concave structure is embedded at the center of the bottom inner wall of the operation frame, a rectangular air slot is arranged on one side of the bottom inner wall of the operation frame, a layered pretreatment mechanism is arranged in the rectangular air slot, and a dynamic poking mechanism and an intermittent pressing mechanism are arranged in the poking frame.

[0008] The layered pretreatment mechanism comprises two groups of symmetrical earth covering vertical plates, the bottom of the two groups of earth covering vertical plates is provided with an inclined surface away from each other, and a screw sliding block is fixedly installed at the front and rear centers of the earth covering vertical plate;

[0009] The screw sliding blocks are respectively slidably connected in the horizontal grooves provided at the front and rear inner walls of the rectangular groove, the adjacent two groups of screw sliding blocks inside the front horizontal groove are respectively screw-jointed with screw guide rods with opposite threads, the two groups of screw guide rods are fixedly connected at the opposite ends, and the ends away from each other of the two groups of screw guide rods are respectively rotatably connected with the inner walls of the corresponding horizontal grooves, and one end of one group of screw guide rods and the inner side wall of the corresponding horizontal groove are jointly provided with a driving motor.

[0010] Further, the dynamic stirring mechanism comprises a plurality of groups of crushing barrels arranged inside the stirring frame and located at the opening side, a rotating rod is penetratingly connected inside each group of crushing barrels, a plurality of groups of eccentric sawtooth discs are fixedly installed on the outer portion of the rotating rod and coincide with the crushing barrels at equal distances, the upper and lower adjacent two groups of eccentric sawtooth discs are provided in opposite structures, an opening and closing disc adapted to the bottom barrel opening of the crushing barrel is fixedly installed at the bottom end of the rotating rod, and the top surface of the opening and closing disc is provided in a conical surface.

[0011] Further, the rotating rod extends to above the stirring frame and is fixedly installed with two groups of chucks, a vertical toothed roller is fixedly sleeved and arranged on the outer portion of the rotating rod and located at the top frame of the stirring frame, and the vertical toothed roller penetrates the top frame of the stirring frame.

[0012] Further, the auxiliary rotating gear is meshingly connected between the front and rear adjacent two groups of vertical toothed rollers and located at the top end of the stirring frame, the main rotating gear disc is meshingly connected on one side of one group of vertical toothed rollers, the bottom shaft of the main rotating gear disc extends to the inner wall of the top of the stirring frame and is provided with a double-shaft motor, a limiting cylinder is fixedly installed at the bottom output shaft of the double-shaft motor, and an inclined rotating groove is provided on the outer portion of the limiting cylinder.

[0013] Further, the dynamic stirring mechanism further comprises a liquid guide frame arranged at the adjacent positions of the plurality of groups of crushing barrels, a plurality of groups of liquid distribution grooves are equally provided inside the liquid guide frame, a spray head is provided at the bottom of the liquid distribution groove, a piston push rod is penetratingly provided at the top of the liquid distribution groove, a plurality of groups of piston push rods are fixedly installed at the top end of the inverted T-shaped pressing rod, a connecting rod is fixedly installed at the side center of the inverted T-shaped pressing rod, and one end of the connecting rod is slidably connected inside the inclined rotating groove.

[0014] Further, the intermittent material pressing mechanism comprises a reverse T-shaped vertical rod arranged through the inside of the material stirring frame away from the side of the crushed material barrel, the top end of the reverse T-shaped vertical rod extends to the top of the material stirring frame, two sets of chucks are also fixedly installed on the top of the material stirring frame, and the outside of the reverse T-shaped vertical rod is jointly wound with a pressure spring ring between the top surface of the material stirring frame and one of the sets of chucks, a plurality of sets of cutting pieces with a conical structure at the bottom are fixedly installed on the bottom of the reverse T-shaped vertical rod, and the bottom end of the cutting piece is inserted into the clamping groove arranged at the bottom inner wall of the material stirring frame.

[0015] Further, the intermittent material pressing mechanism further comprises a positioning frame fixedly installed at the top end of the material stirring frame, and a pressing frame is hingedly arranged at the middle section of the inside of the positioning frame, a plurality of sets of clamping grooves one are arranged at one end of the pressing frame at equal distances, a clamping groove two is arranged at the other end of the pressing frame, the plurality of sets of clamping grooves one are respectively sleeved on the outside of the corresponding rotating rods and located between the adjacent two sets of chucks, and the clamping groove two is sleeved on the outside of the reverse T-shaped vertical rod and located between the two sets of chucks.

[0016] Further, a double-shaft motor two is arranged at the center of the inner wall of the top of the positioning frame, eccentric resistance discs are fixedly installed at the output shafts on both sides of the double-shaft motor two, and the two sets of eccentric resistance discs are arranged in opposite structures.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The present application adjusts the opening and closing movement of the covering soil vertical plate by arranging the layered pretreatment mechanism, the bidirectional driving arrangement of the covering soil vertical plate and the spiral guide rod, loosens and levels the surface layer or deep layer of soil, reduces the protrusion of the surface layer of soil when working on the surface layer, provides a level base for uniform straw laying, inserts the covering soil vertical plate into the deep layer of soil and stirs the soil to the two sides when working on the deep layer, forms an inner pit, and facilitates subsequent straw filling and soil covering.

[0019] The present application also realizes uniform crushing of long straw by arranging the dynamic stirring mechanism, arranging the opposite structures of the eccentric sawtooth disc and synchronously rotating the eccentric sawtooth disc, avoids the accumulation of large-size straw affecting degradation, and realizes quantitative spraying of liquid (such as water and fungicide) by the self-rotation of the limiting cylinder driven by the double-shaft motor one, the linkage of the piston push rod of the liquid guide frame and the reverse T-shaped pressing rod, sprays liquid after the crushed material is discharged, moistens the surface of the crushed straw, reduces the contact resistance between the soil and the straw, and accelerates microbial decomposition.

[0020] The present application also realizes intermittent discharge of the crushed material barrel (quantitative feeding of crushed straw to the surface of the soil layer) by the linkage of the swinging of the pressing frame and the double-shaft motor two, the periodic extrusion of the eccentric resistance disc, avoids the accumulation or uneven distribution of straw, and realizes intermittent pressing of the laid crushed straw by the sinking of the cutting piece with the reverse T-shaped vertical rod into the soil layer, prevents wind blowing, promotes the close contact between the crushed straw and the soil, and improves the root soil fixation effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] For the convenience of those skilled in the art to understand, the present application is further described below in conjunction with the drawings.

[0022] Figure 1 The overall structure of the present application is shown in the schematic diagram.

[0023] Figure 2 The overall structure of the present application is shown in the schematic diagram.

[0024] Figure 3 The schematic diagram of the operation box and its internal structure is shown in the schematic diagram.

[0025] Figure 4 The schematic diagram of the operation box and its internal structure is shown in the schematic diagram.

[0026] Figure 5 The schematic diagram of the operation box and its internal structure is shown in the schematic diagram.

[0027] Figure 6 The schematic diagram of the operation box and its internal structure is shown in the schematic diagram.

[0028] Figure 7 The schematic diagram of the operation box and its internal structure is shown in the schematic diagram.

[0029] In the figure: 1, moving box; 2, operation box; 3, air cylinder; 4, stirring box; 5, layering pretreatment mechanism; 51, covering plate; 52, spiral sliding block; 53, spiral guide rod; 54, driving motor; 6, dynamic stirring mechanism; 61, broken material cylinder; 62, rotating rod; 63, eccentric sawtooth disc; 64, opening and closing disc; 65, chuck; 66, vertical toothed roller; 67, auxiliary rotating gear; 68, main rotating gear; 69, double-shaft motor; 610, limiting cylinder; 611, inclined rotating groove; 612, liquid guide frame; 613, piston push rod; 614, inverted T-shaped pressing rod; 615, connecting rod; 7, intermittent pressing mechanism; 71, inverted T-shaped vertical rod; 72, pressure spring ring; 73, slice; 74, positioning frame; 75, pressing frame; 76, double-shaft motor; 77, eccentric resistance disc. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] Example one: please refer to Figures 1-4As shown, the embodiment provides a corn straw layered returning device, which comprises a reverse concave moving frame 1 and a rectangular operation frame 2 sleeved outside the moving frame 1, and a pneumatic cylinder 3 is arranged between the top inner wall of the operation frame 2 and the top of the moving frame 1 through a push rod;

[0032] A concave stirring frame 4 is arranged at the center of the bottom inner wall of the operation frame 2, and a rectangular air slot is arranged at one side of the bottom inner wall of the operation frame 2, wherein a layered pretreatment mechanism 5 is arranged inside the rectangular air slot, and a dynamic stirring mechanism 6 and an intermittent pressing mechanism 7 are arranged inside the stirring frame 4;

[0033] The layered pretreatment mechanism 5 comprises two groups of symmetrical earth covering vertical plates 51, the bottom of the two groups of earth covering vertical plates 51 is arranged in a beveling surface away from each other, and the beveling surface design can make the earth covering vertical plates 51 move more smoothly on the soil surface and reduce resistance, and can also stir the soil on the soil surface to both sides;

[0034] Spiral sliding blocks 52 are fixedly installed at the front and rear centers of the earth covering vertical plates 51, a plurality of groups of spiral sliding blocks 52 are respectively and slidably connected in the horizontal grooves arranged at the front and rear inner walls of the rectangular groove, the adjacent two groups of spiral sliding blocks 52 inside the front horizontal groove are respectively and spirally sleeved with screw guide rods 53 with opposite threads, the two groups of screw guide rods 53 are fixedly connected at the opposite ends, and the ends away from each other are respectively and rotatably connected with the inner walls of the corresponding horizontal grooves, and one end of one group of screw guide rods 53 and the inner side wall of the corresponding horizontal groove are jointly provided with a driving motor 54;

[0035] The pretreatment stage: moving along the surface of the field, when laying straw on the surface layer of the field, the layered pretreatment mechanism 5 is used to pretreat the surface of the surface layer, and then the pneumatic cylinder 3 is started to sink the operation frame 2 by using the push rod, so as to force the layered pretreatment mechanism 5, the stirring frame 4, the dynamic stirring mechanism 6 and the intermittent pressing mechanism 7 to sink;

[0036] The bottom of the two groups of earth covering vertical plates 51 is combined and pressed on the surface of the soil layer, and moves with the device, the protruding bumps or foreign matters on the bottom surface of the earth covering vertical plates 51 are pushed, so that the surface of the soil layer is kept flat, so as to facilitate the uniform laying of the subsequent straw;

[0037] Meanwhile, the driving motor 54 is started, and the output shaft of the driving motor 54 drives one set of the spiral guide rods 53 to rotate. Since the two sets of the spiral guide rods 53 are fixedly connected at opposite ends and have opposite threads, when one set of the spiral guide rods 53 rotates, the other set of the spiral guide rods 53 synchronously reversely rotates, thereby driving the spiral sliders 52, which are sleeved outside the spiral guide rods 53, to slide in the transverse groove in opposite directions. The spiral sliders 52 drive the earth covering plates 51 to move towards or away from each other on the surface of the soil layer, so as to further loosen the surface of the soil layer, increase the gap between the soil layers, facilitate the degradation of the straw after the straw is returned to the field and the mixing with the soil, and improve the effect of the straw returning to the field.

[0038] When the straw is added into the deep soil layer, the cylinder 3 is used to push the operation frame 2 to descend, so that the poking frame 4, the dynamic poking mechanism 6 and the intermittent pressing mechanism 7 all descend, and the bottom of the two combined earth covering plates 51 is inserted into the deep soil layer. The above operation is repeated, so that the earth covering plates 51, which are mixed into the soil layer, move towards or away from each other along the deep soil layer, so as to form an inner pit groove. The dynamic poking mechanism 6 is used to fill the material. With the continuous movement of the device, the soil is pushed to the end of the field.

[0039] At this time, the cylinder 3 is used to lift the operation frame 2 and move it to the other side of the soil pile, and then the cylinder 3 is used to lift and lower the operation frame 2 until the bottom of the earth covering plate 51 is flush with the surface of the original soil layer. Then the device is reversely moved, the earth covering plate 51 slides on the surface of the soil layer and pushes the soil on the surface of the original soil layer into the inner pit groove until the inner pit groove is filled, the straw addition and earth covering operation of the deep soil layer are completed, and the layered straw returning to the field of the corn straw is realized, so as to improve the efficiency of the straw returning to the field.

[0040] Embodiment two: please refer to Figure 3 - Figure 6 As shown in the figure, the dynamic poking mechanism 6 includes a plurality of groups of broken material barrels 61 arranged in the poking frame 4 and located at the opening side. Each group of the broken material barrels 61 is throughly connected with a rotating rod 62 inside. A plurality of groups of eccentric sawtooth discs 63 are fixedly installed on the outside of the rotating rod 62 and coincide with the broken material barrels 61 at equal distances. The upper and lower two adjacent groups of the eccentric sawtooth discs 63 are oppositely arranged. The bottom end of the rotating rod 62 is fixedly installed with an opening and closing disc 64 matched with the bottom barrel port of the broken material barrel 61.

[0041] When the broken material barrel 61 is broken, the opening and closing disc 64 coincides with the bottom barrel port of the broken material barrel 61, so as to realize the closed operation of the broken material. When the broken material is finished, the opening and closing disc 64 intermittently downward, and the bottom of the broken material barrel 61 is open, so as to discharge the broken straw. The top surface of the opening and closing disc 64 is conical, which is helpful for the smooth sliding of the broken straw and avoids blockage.

[0042] The top of the rotating rod 62 extends above the poking frame 4 and is fixedly provided with two sets of chucks 65. A vertical toothed roller 66 is fixedly sleeved outside the rotating rod 62 and located at the top frame of the poking frame 4. The vertical toothed roller 66 penetrates through the top frame of the poking frame 4. Adjacent two sets of vertical toothed rollers 66 are meshingly connected and located at the top end of the poking frame 4. An auxiliary rotating gear 67 is meshingly connected between the adjacent two sets of vertical toothed rollers 66. One side of one set of vertical toothed rollers 66 is meshingly connected with a main rotating gear disc 68. The bottom shaft of the main rotating gear disc 68 extends to the top inner wall of the poking frame 4 and is provided with a double-shaft motor 69. A limiting cylinder 610 is fixedly installed at the bottom output shaft of the double-shaft motor 69. An inclined rotating groove 611 is arranged outside the limiting cylinder 610.

[0043] In the early stage of straw poking, a plurality of groups of long straws are introduced into the inside of the crushing cylinder 61, and then the double-shaft motor 69 is started to drive the main rotating gear disc 68 to rotate. Under the meshing action, the main rotating gear disc 68 drives one set of vertical toothed rollers 66 to rotate, and through the meshing action of the auxiliary rotating gear 67, it drives the adjacent vertical toothed rollers 66 to rotate synchronously. The rotation of the vertical toothed rollers 66 further drives the rotating rod 62 and the eccentric sawtooth disc 63 outside the rotating rod 62 to rotate synchronously. Since the structures of the two sets of eccentric sawtooth discs 63 above and below are opposite, they will produce a relative cutting action in the rotating process, effectively cutting the straws to form straw fragments.

[0044] In addition, it is worth noting that the dynamic poking mechanism 6 also includes a liquid guide frame 612 arranged at the adjacent positions of the plurality of groups of crushing cylinders 61. A plurality of groups of liquid distribution grooves are equidistantly arranged inside the liquid guide frame 612. The bottom of the liquid distribution groove is provided with a spray head, and the top of the liquid distribution groove is provided with a piston push rod 613 penetrating through. A plurality of groups of piston push rods 613 are fixedly installed at the top end of the piston push rod 613. A T-shaped pressing rod 614 is fixedly installed at one side of the center of the T-shaped pressing rod 614. One end of the connecting rod 615 is slidably connected inside the inclined rotating groove 611.

[0045] In the first stage of the late straw poking, the double-shaft motor 69 drives the main rotating gear disc 68 to rotate, and at the same time, it also drives the limiting cylinder 610 to rotate synchronously. The limiting cylinder 610 moves relative to the connecting rod 615, and the end of the connecting rod 615 slides along the inside of the inclined rotating groove 611. The slope difference of the inclined rotating groove 611 and the sliding cooperation of the connecting rod 615 force the connecting rod 615 to pull the T-shaped pressing rod 614 to move up and down reciprocatingly.

[0046] The T-shaped pressing rod 614 pulls a plurality of groups of piston push rods 613 to suck up and down. When the piston push rod 613 moves downward, the pressure in the liquid distribution groove is generated, and the liquid in the liquid distribution groove is uniformly sprayed on the straw fragments on the ground through the spray head, which is helpful for the wetting and subsequent biodegradation process of the straw. When the T-shaped pressing rod 614 moves upward, the piston push rod 613 generates suction to extract new liquid from the external liquid storage device, preparing for the next spraying.

[0047] Example three: please refer toFigures 3-5 , Figure 7 As shown, the intermittent pressing mechanism 7 includes an inverted T-shaped upright 71 that runs through the inside of the feeding frame 4 away from the crushing cylinder 61. The top of the inverted T-shaped upright 71 extends to the top of the feeding frame 4 and is also fixedly installed with two sets of chucks 65. The outside of the inverted T-shaped upright 71 is located between the top surface of the feeding frame 4 and one of the sets of chucks 65 and is wound with a pressure spring coil 72. Several sets of slices 73 with a tapered bottom structure are fixedly installed at equal intervals at the bottom of the inverted T-shaped upright 71, and the bottom end of the slices 73 is inserted into the slot provided at the bottom inner wall of the feeding frame 4.

[0048] The intermittent pressing mechanism 7 also includes a positioning frame 74 fixedly installed at the top of the feeding frame 4, and a pressing frame 75 is hinged in the middle section of the positioning frame 74. Several sets of slot 1 are evenly arranged at one end of the pressing frame 75, and a slot 2 is arranged in the center of the other set. Several sets of slot 1 are respectively sleeved on the outside of the corresponding rotating rod 62 and located between two adjacent sets of chucks 65.

[0049] Furthermore, the second slot is sleeved on the outside of the inverted T-shaped upright 71 and located between the two sets of chucks 65. A dual-axis motor 76 is provided at the center of the inner wall of the top of the positioning frame 74, and eccentric abutment plates 77 are fixedly installed on both sides of the output shaft of the dual-axis motor 76. The two sets of eccentric abutment plates 77 are arranged in opposite structures.

[0050] Straw feeding state: This embodiment cooperates with the dynamic feeding mechanism 6 in embodiment 2. The dual-shaft motor 76 is started, and the two sets of eccentric abutment plates 77 are driven to rotate. During the rotation, the eccentric abutment plates 77 continuously squeeze the pressure frame 75, causing the pressure frame 75 to swing around the hinge point. During the up-and-down reciprocating swing of the frame at both ends, since several sets of slots 1 set at one end of the pressure frame 75 are respectively sleeved on the outside of the corresponding rotating rod 62, the end of the pressure frame 75 (near the slot 1) first sinks down and presses against the corresponding chuck 65.

[0051] At this time, the rotating rod 62, the eccentric sawtooth disc 63, and the opening and closing disc 64 all sink downwards until the opening and closing disc 64 disengages from the bottom of the crushing cylinder 61. The bottoms of several sets of crushing cylinders 61 open intermittently so that the crushed corn stalks inside can be quantitatively spread to the corresponding soil surface to achieve uniform covering of the soil surface.

[0052] When the end of the pressure frame 75 (near the first slot) is lifted upward, the chuck 65 pulls the rotating rod 62 and other components to lift it until the opening and closing plate 64 overlaps with the bottom of the crushing cylinder 61 again, thus closing the discharge channel.

[0053] The lifting of one end of the pressing frame 75 will inevitably cause the sinking of the other end, and when the end of the pressing frame 75 (slot one) is lifted, the end of the pressing frame 75 (near slot two) is lowered, and since the slot two at one end of the pressing frame 75 is sleeved outside the corresponding inverted T-shaped vertical rod 71, the pressing of the chuck 65 forces the inverted T-shaped vertical rod 71 and the plurality of groups of cutting pieces 73 to sink, and the bottom of the cutting piece 73 penetrates the bottom of the poking frame 4 and is inserted into the soil layer, so as to intermittently press the laid straw fragments, force the straw fragments to be inserted into the soil, and avoid the situation that the straw fragments are not in sufficient contact with the soil layer due to wind blowing;

[0054] When the end of the pressing frame 75 (near slot two) is lifted, the inverted T-shaped vertical rod 71 and the plurality of groups of cutting pieces 73 are also lifted, and the bottom end of the plurality of groups of cutting pieces 73 is extracted from the soil layer and reenters the inside of the poking frame 4, and moves relative to the corresponding through slot, realizes scraping of the straw fragments and soil residues adhered to the outside of the cutting piece 73, and maintains the cleanliness of the surface of the cutting piece 73, and at the same time, through the setting of the pressure spring ring 72, the cutting piece 73 can be automatically reset when the inverted T-shaped vertical rod 71 is not subjected to external force, facilitating the next intermittent pressing operation.

[0055] It is worth noting that the steps of straw returning to the field are: determining the position of the covering soil layer - crushing the straw raw material - intermittent poking - spraying liquid on the straw fragments - inserting the straw fragments into the soil layer - covering and burying the soil;

[0056] The operation process of the whole device is circularly carried out, so as to ensure that the corn straw can be uniformly and deeply covered and integrated into the soil layer, and the efficient and uniform straw returning to the field effect of the corn straw is realized.

[0057] And through the synergistic effect of the dynamic poking mechanism 6 and the intermittent pressing mechanism 7, the continuous crushing, uniform discharge and intermittent pressing of the straw are realized, and the efficiency and quality of the corn straw returning to the field are greatly improved.

[0058] Working principle:

[0059] In use, first, the device as a whole is advanced along the surface of the field, the cylinder 3 controls the lifting of the operation frame 2 and the components inside it according to the operation requirements, so as to adapt to the treatment of soil of different depths, when treating the shallow soil, the cylinder 3 is started to make the operation frame 2 descend, and the two groups of soil covering vertical plates 51 are combined and pressed on the surface of the soil layer, and as the device moves, the soil covering vertical plates 51 not only level the surface of the soil layer, but also rotate the screw guide rod 53 through the driving of the driving motor 54, drive the soil covering vertical plates 51 to move towards or away from each other on the surface of the soil layer, realize the loosening treatment of the surface of the soil layer, and create conditions for the subsequent uniform laying of the straw.

[0060] When the deep soil treatment is carried out, the cylinder 3 pushes the operation frame 2 down again, so that the combined soil covering plate 51 is inserted into the deep soil, and the inner pit groove is formed by the same operation. At this time, the dynamic material stirring mechanism 6 starts to work, the long straw is introduced into the crushing cylinder 61, the double-shaft motor one 69 drives the main gear plate 68 and the vertical gear roller 66 to rotate, and then drives the rotating rod 62 and the eccentric sawtooth plate 63 outside the rotating rod 62 to rotate, and cuts the straw;

[0061] Subsequently, the intermittent material pressing mechanism 7 starts to work, the double-shaft motor two 76 drives the eccentric resistance plate 77 to rotate, so that the pressing frame 75 swings around the hinge point, the clamping groove one and the clamping groove two at one end of the pressing frame 75 are respectively sleeved outside the rotating rod 62 and the inverted T-shaped vertical rod 71, and with the swinging of the pressing frame 75, the intermittent opening and closing of the bottom of the crushing cylinder 61 and the intermittent pressing of the cutting piece 73 are realized.

[0062] When the pressing frame 75 (clamping groove one) end subsides, the bottom of the crushing cylinder 61 is opened, and the straw is quantitatively laid on the soil surface, when the pressing frame 75 (clamping groove two) end subsides, the cutting piece 73 is inserted into the soil, and the straw is intermittently pressed, when the pressing frame 75 is lifted, the discharge channel is closed, and the cutting piece 73 is lifted and scraped clean. Before that, the spray heads in the liquid guide frame 612 uniformly spray liquid on the straw, so as to promote the wetting and biodegradation of the straw.

[0063] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to the specific embodiments. Obviously, according to the content of the present application, many modifications and changes can be made. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A corn stalk layering and returning device, comprising a concave movable frame (1) and a rectangular operating frame (2) sleeved outside the movable frame (1), characterized in that: A cylinder (3) is provided between the top inner wall of the operation frame (2) and the top of the moving frame (1) via a push rod. A concave material feeding frame (4) is embedded in the center of the bottom inner wall of the operation frame (2). A rectangular slot is provided on the side of the material feeding frame (4) on the bottom inner wall of the operation frame (2). A layered pretreatment mechanism (5) is provided inside the rectangular slot. A dynamic material feeding mechanism (6) and an intermittent pressing mechanism (7) are provided inside the material feeding frame (4). The layered pretreatment mechanism (5) includes two sets of symmetrically arranged soil covering plates (51). The bottom of the two sets of soil covering plates (51) and the side away from each other are arranged with oblique cuts. The front and rear centers of the soil covering plates (51) are fixedly installed with spiral sliders (52). Several sets of spiral sliders (52) are slidably connected in the transverse grooves provided on the front and rear inner walls of the rectangular groove. The two adjacent sets of spiral sliders (52) inside the front transverse groove are respectively spirally sleeved with spiral guide rods (53) with opposite threads. The opposing ends of the two sets of spiral guide rods (53) are fixedly connected, and the ends of the two rods away from each other are respectively rotatably connected to the inner wall of the corresponding transverse groove. One end of one set of spiral guide rods (53) is provided with a drive motor (54) between it and the inner wall of the corresponding transverse groove.

2. The corn stalk layered return device according to claim 1, characterized in that, The dynamic feeding mechanism (6) includes several sets of crushing cylinders (61) set inside the feeding frame (4) and located on the opening side. Each set of crushing cylinders (61) is connected through a rotating rod (62). Several sets of eccentric sawtooth discs (63) are fixedly installed on the outside of the rotating rod (62) at equal distances from the section overlapping with the crushing cylinder (61). The upper and lower adjacent sets of eccentric sawtooth discs (63) are arranged with opposite structures. An opening and closing disc (64) adapted to the bottom opening of the crushing cylinder (61) is fixedly installed at the bottom of the rotating rod (62), and the top surface of the opening and closing disc (64) is set with a conical surface.

3. The corn stalk layered return device according to claim 2, characterized in that, The top of the rotating rod (62) extends to the top of the feeding frame (4) and is fixedly installed with two sets of chucks (65). A vertical toothed roller (66) is fixedly sleeved on the outside of the rotating rod (62) and located at the top frame of the feeding frame (4), and the vertical toothed roller (66) penetrates the top frame of the feeding frame (4).

4. A corn stalk layered return-to-field device according to claim 3, characterized in that, An auxiliary rotating gear (67) is meshed between two adjacent sets of vertical toothed rollers (66) and at the top of the feeding frame (4). One side of one set of vertical toothed rollers (66) is meshed with a main rotating gear (68), and the bottom shaft of the main rotating gear (68) extends to the top inner wall of the feeding frame (4) and is equipped with a dual-axis motor (69). A limit cylinder (610) is fixedly installed at the bottom output shaft of the dual-axis motor (69), and an inclined rotating groove (611) is provided on the outside of the limit cylinder (610).

5. A corn stalk layered return-to-field device according to claim 1, characterized in that, The dynamic feeding mechanism (6) also includes a liquid guiding frame (612) set at adjacent positions of several sets of crushing cylinders (61). Several liquid guiding frames (612) are equally spaced inside. A nozzle is set at the bottom of the liquid guiding frame, and a piston push rod (613) is installed through the top of the liquid guiding frame. Several sets of piston push rods (613) are fixedly installed with an inverted T-shaped pressure rod (614) at the top. A connecting rod (615) is fixedly installed at the center of one side of the inverted T-shaped pressure rod (614). One end of the connecting rod (615) is slidably connected inside the inclined rotating groove (611).

6. A corn stalk layered return-to-field device according to claim 1, characterized in that, The intermittent pressing mechanism (7) includes an inverted T-shaped upright (71) that runs through the inside of the feeding frame (4) away from the crushing cylinder (61). The top of the inverted T-shaped upright (71) extends to the top of the feeding frame (4) and is also fixedly installed with two sets of chucks (65). The outside of the inverted T-shaped upright (71) is located between the top surface of the feeding frame (4) and one of the sets of chucks (65) and is wound with a pressure spring coil (72). Several sets of slices (73) with a tapered bottom structure are fixedly installed at equal intervals at the bottom of the inverted T-shaped upright (71), and the bottom end of the slices (73) is inserted into the slot provided at the bottom inner wall of the feeding frame (4).

7. A corn stalk layered return-to-field device according to claim 1, characterized in that, The intermittent pressing mechanism (7) also includes a positioning frame (74) fixedly installed at the top of the feeding frame (4), and a pressing frame (75) is hinged in the middle section of the positioning frame (74). A number of slots are provided at equal intervals on one end of the pressing frame (75), and a slot is provided at the center of the other set. The slots are respectively sleeved on the outside of the corresponding rotating rod (62) and located between two adjacent sets of chucks (65), and the slots are sleeved on the outside of the inverted T-shaped upright (71) and located between two sets of chucks (65).

8. A corn stalk layered return-to-field device according to claim 7, characterized in that, A dual-axis motor (76) is provided at the center of the inner wall of the top of the positioning frame (74), and eccentric abutment plates (77) are fixedly installed on both sides of the output shaft of the dual-axis motor (76). The two sets of eccentric abutment plates (77) are arranged in opposite structures.

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