Residual film recovery device for deep plough layer

Abstract

The utility model provides a deep plough layer residual film recovery device which comprises a soil lifting mechanism, a screening mechanism, a roller crushing mechanism, a fan film blowing mechanism and a rack, the soil lifting mechanism comprises a film lifting rotating shaft, eccentric wheels and a film lifting pull rod, the eccentric wheels and the film lifting pull rod are arranged at the two ends of the film lifting rotating shaft, a pull rod shaft is assembled at the other end of the film lifting pull rod, and pull plates are arranged at the two ends of the pull rod shaft respectively. The lower ends of the pulling plates are hinged to the rack, a film lifting plate is connected between the two pulling plates, and a plurality of film lifting knives are arranged at the front end of the film lifting plate; the screening mechanism comprises a first-stage screening assembly and a second-stage screening assembly. The double-roller crushing mechanism comprises a first-stage crushing roller and a second-stage crushing roller; the fan film blowing mechanism comprises a fan with an upward opening and an air guide plate. The device can perform film stripping on a deep plough layer, and residues are avoided; efficient film and soil separation is achieved through the screening mechanism and the double-roller crushing mechanism; the fan film blowing mechanism is used for blowing films upwards for recycling, film and impurity separation is carried out, deep plough layer residual films can be effectively separated and recycled, and the recycling efficiency and the recycling rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of residual film recovery, and in particular to a device for recovering residual film in a deep plow layer. Background Art

[0002] Mulching provides excellent growing conditions for crops by increasing warmth, conserving moisture and fertilizer, saving water, and controlling weeds. However, deep-plow film cannot be effectively removed and does not degrade quickly enough, leading to an increasing amount of residual film in farmland, causing serious soil pollution. To address this problem, methods such as farmer collection and mechanical recycling are commonly used. However, existing film recycling technologies suffer from low efficiency and recovery rates, and are unable to effectively recover film residue in the deep-plow layer.

[0003] Therefore, there is an urgent need to develop a machine for recycling residual film in the plowing layer, focusing on breakthroughs in the effective recovery of residual film in the plowing layer, recovering the area of ​​residual film left in the plowing layer to the greatest extent, forcibly separating the soil and residual film quickly, and improving the recovery efficiency and recovery rate of residual film in the plowing layer. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a device for recovering residual film in the deep plowing layer, which can effectively recover the residual film in the deep plowing layer and improve the recovery efficiency and recovery rate of the residual film in the plowing layer.

[0005] The utility model provides a device for recovering residual film from deep tillage layer, comprising a soil-lifting mechanism, a screening mechanism, a roller crushing mechanism, a fan film-blowing mechanism and a frame, wherein:

[0006] The soil lifting mechanism includes a film lifting shaft provided at the front of the frame, an eccentric wheel is provided at each end of the film lifting shaft, a film lifting rod is provided on the eccentric shaft of the eccentric wheel, the other end of the film lifting rod is provided with a pull rod shaft, and a pull plate is provided at each end of the pull rod shaft, the lower end of the pull plate is hingedly connected to the frame, and a film lifting plate is connected between the two pull plates, and a plurality of film lifting knives are provided at the front end of the film lifting plate;

[0007] The screening mechanism includes a primary screening assembly and a secondary screening assembly obliquely arranged in a frame, and the discharge end of the primary screening assembly is located above the feeding section space of the secondary screening assembly, and the primary screening assembly and the secondary screening assembly each include at least two sets of driving wheels and driven wheels, each set of driving wheels and driven wheels is annularly equipped with a conveyor belt, and a plurality of screen bars are parallelly arranged between the conveyor belts, each screen bar is provided with a rubber sleeve, and the rubber sleeve is provided with a plurality of rubber burrs;

[0008] The roller crushing mechanism includes a group of primary crushing rollers and a group of secondary crushing rollers arranged between the primary screening assembly and the secondary screening assembly, and the primary crushing roller is arranged above the secondary crushing roller. The primary crushing roller and the secondary crushing roller each include a fixed squeezing roller and an adjustable squeezing roller arranged in parallel. The fixed squeezing roller is mounted on the frame through a bearing, and the adjustable squeezing roller is movably arranged in an adjustment mounting hole of the frame, and its two ends are respectively movably mounted on one side of an adjustment swing arm, and the other side of the adjustment swing arm is hinged to an adjustment pull rod, and the adjustment pull rod is connected to the frame through a spring. The end of the adjustment swing arm is provided with a swing arm rotating shaft, and the swing arm rotating shaft is mounted on the frame;

[0009] The fan film blowing mechanism includes a fan arranged below the end space of the secondary screening component, the air outlet of the fan is arranged upward, and an air guide plate is arranged at the air outlet inclined toward the rear and upper part.

[0010] Preferably, the rear end of the film-lifting knife is provided with a plurality of guide rods, and the guide rods are U-shaped.

[0011] Preferably, a turbine box is provided on the film-forming shaft.

[0012] Preferably, a support wheel is provided on the lower side of the conveyor belt.

[0013] Preferably, a film-shifting assembly is provided below the primary screening assembly and the secondary screening assembly, and the film-shifting assembly includes a film-shifting roller shaft, a shaft sleeve is provided on the film-shifting roller shaft, and a plurality of plate racks are provided on the shaft sleeve, and each group of plate racks is provided with a film-shifting plate.

[0014] Preferably, a baffle plate and a crushing assembly are provided above the feeding end of the secondary screening assembly, and the crushing assembly includes a crushing roller shaft, and an array of crushing blades is provided on the crushing roller shaft.

[0015] Preferably, the driving wheel and the driven wheel are pulleys, and the conveyor belt is a belt, or the driving wheel and the driven wheel are sprockets, and the conveyor belt is a chain.

[0016] Preferably, the fan includes a cover shell, an air inlet is provided on the lower side of the cover shell, an air outlet is provided on the upper rear side thereof, a fan shaft is provided in the cover shell, a plurality of partitions are provided on the fan shaft, and fan blades are provided between adjacent partitions.

[0017] Preferably, the frame includes a group of side panels, the rear part of the side panels is provided with walking wheels and a film collecting frame, the front end of the lower part of the film collecting frame is provided with a film baffle plate, several beams are connected between the two side panels, and a traction frame and a group of depth-limiting wheel frames are provided on the front beams, the depth-limiting wheel frames are equipped with telescopic rods, and the lower end of the telescopic rods is equipped with depth-limiting wheels.

[0018] Preferably, it also includes a transmission mechanism, which includes a forward transmission shaft and a reverse transmission shaft, and the forward transmission shaft and the reverse transmission shaft are respectively provided with gears that mesh with each other, the forward transmission shaft is transmission-connected to the film-forming shaft, and at least one end of the forward transmission shaft is provided with a forward transmission wheel, and the forward transmission wheel is transmission-connected to the driving wheel, the fixed extrusion roller and the shaft of the fan; the reverse transmission shaft is provided with a reverse transmission wheel, and the reverse transmission wheel is transmission-connected to the two swing arm shafts, and each swing arm shaft is transmission-connected to its corresponding adjustable extrusion roller; the transmission connection is a chain and sprocket combination connection or a pulley and belt combination connection.

[0019] Working Principle of the Utility Model: The mulch film recovery device for deep tillage layer in the utility model has a soil-lifting mechanism that drives the eccentric wheel to rotate via the mulch-lifting shaft, which in turn pulls the pull plate via the mulch-lifting pull rod and the pull rod shaft. The pull plate causes the mulch-lifting plate to reciprocate around its hinge point with the frame, removing the mulch film from the deep tillage layer and feeding the mulch film, soil, and mixed materials into the device as a whole. The screening mechanism includes a primary screening assembly and a secondary screening assembly. The primary screening assembly first performs a preliminary screening of the mixed material to remove a large amount of soil. After crushing by the roller crushing mechanism, the secondary screening assembly further screens and removes the remaining soil. The two-stage screening effectively separates the mulch film and soil. In addition, a number of rubber burrs are provided on the screen bars to prevent small pieces of mulch film from falling back into the field with the soil, thereby improving the mulch film recovery rate. A mulch-lifting assembly is provided below each of the primary and secondary screening assemblies. The mulch-lifting plate removes the mulch film wrapped around the rubber burrs, separating it from the rubber burrs at the ends of the primary and secondary screening assemblies for effective recovery. The roller crushing mechanism is divided into a primary screening component and a secondary screening component. Through two-stage extrusion, the soil clods are effectively crushed, so that the residual film is fully exposed, and the residual film is prevented from being entrained in the soil clods and falling back into the field, further improving the residual film recovery rate. In addition, the screening mechanism crushes the soil by cooperating with the fixed squeezing roller and the adjustable squeezing roller. The adjustable squeezing roller is movable through the adjustment arm and the adjustment pull rod and is set in the adjustment mounting hole of the frame. It is connected to the frame by a spring. The spring elastic force facilitates the automatic adjustment of the distance between the fixed squeezing roller and the adjustable squeezing roller, which can crush soil clods of different sizes and prevent damage to the equipment caused by rigid squeezing. The fan outlet of the film blowing mechanism is upward, and the wind guide plate is tilted upward and backward. The wind force is used to blow the residual film upward and backward and drop it into the film collection frame. Heavier debris such as straw falls to the ground under the action of gravity, effectively completing the separation of film and debris. The forward transmission shaft of the transmission mechanism is connected to the film-lifting shaft, and the forward transmission wheel is connected to the driving wheel, the fixed squeezing roller and the rotating shaft of the fan through a chain or belt, thereby driving the screening mechanism, the fixed squeezing roller and the fan to rotate forward; the reverse transmission shaft is engaged with the forward transmission shaft through a gear, and the reverse transmission wheel drives the two swing arm rotating shafts to reverse through a chain or belt, and the swing arm rotating shaft drives the adjustable squeezing roller to reverse through a chain or belt, and the fixed squeezing roller and the adjustable squeezing roller rotate in opposite directions, crushing the soil in the process of sending the soil blocks downward.

[0020] The beneficial effects of the utility model are as follows: the device for recovering residual film in deep tillage layers can remove film from deep tillage layers to prevent residue; a screening mechanism is used to separate film from soil to prevent residual film from falling back; a roller crushing mechanism is used to effectively crush residual film to prevent it from being trapped in soil clods; a fan film blowing mechanism is used to blow film upward for recovery and separation of film and impurities; and gears are used to reverse the power from the turbine box to provide corresponding forward and reverse power for the rotating shaft of the entire device. The device can effectively separate and recover residual film in deep tillage layers, achieving separation of film from soil and impurities, and improving recovery efficiency and recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a perspective view I of the deep tillage layer residual film recovery device of the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged view of the earth-lifting mechanism;

[0023] Figure 3 This is a perspective view II of the deep tillage layer residual film recovery device of the utility model;

[0024] Figure 4 for Figure 3 A partial enlarged view of middle A;

[0025] Figure 5 for Figure 4 A three-dimensional diagram of the middle roller crushing mechanism;

[0026] Figure 6 This is a perspective view III of the deep tillage layer residual film recovery device of the utility model;

[0027] Figure 7 This is a cross-sectional view of the deep tillage layer residual film recovery device of the utility model along the longitudinal symmetry axis;

[0028] Figure 8 for Figure 7 A partial enlarged view of the blower;

[0029] Figure 9 for Figure 7 A partial enlarged view of the middle membrane assembly;

[0030] Figure 10 This is a partially enlarged right view of the deep tillage layer residual film recovery device of the utility model.

[0031] In the picture:

[0032] Soil lifting mechanism 1, film lifting shaft 11, eccentric wheel 12, film lifting rod 13, rod shaft 14, pull plate 15, film lifting plate 16, film lifting knife 17, guide rod 18, turbine box 19;

[0033] Screening mechanism 2, driving wheel 21, driven wheel 22, conveyor belt 23, screen bar 24, rubber burr 25, supporting wheel 26, film-moving assembly 27, film-moving roller 27-1, shaft sleeve 27-2, plate frame 27-3, film-moving plate 27-4, material baffle 28, crushing assembly 29, crushing roller 29-1, crushing blade 29-2;

[0034] Roller crushing mechanism 3, fixed squeezing roller 31, adjustable squeezing roller 32, adjustable swing arm 33, adjustable pull rod 34, swing arm shaft 35;

[0035] Fan film blowing mechanism 4, fan 41, cover 41-1, fan shaft 41-2, partition 41-3, fan blades 41-4, wind guide plate 42;

[0036] Frame 5, side panels 51, travel wheels 52, film collecting frame 53, film baffle 54, crossbeam 55, traction frame 56, depth-limiting wheel frame 57, telescopic rod 58, depth-limiting wheel 59;

[0037] Transmission mechanism 6, forward transmission shaft 61, reverse transmission shaft 62, gear 63, forward transmission wheel 64, reverse transmission wheel 65. DETAILED DESCRIPTION

[0038] In order to make the technical aspects of the present invention easier to understand, the technical solutions of the present invention are now described clearly and completely in conjunction with the accompanying drawings using specific embodiments.

[0039] Example 1:

[0040] like Figures 1 to 10 As shown, the deep tillage layer residual film recovery device of this embodiment includes a soil lifting mechanism 1, a screening mechanism 2, a roller crushing mechanism 3, a fan film blowing mechanism 4 and a frame 5, wherein:

[0041] The soil lifting mechanism 1 includes a film lifting shaft 11 provided at the front of the frame 5, with eccentric wheels 12 at both ends of the film lifting shaft 11, a film lifting rod 13 being provided on the eccentric shaft of the eccentric wheel 12, and a pull rod shaft 14 being provided at the other end of the film lifting rod 13, and a pull plate 15 being provided at both ends of the pull rod shaft 14, the lower end of the pull plate 15 being hingedly connected to the frame 5, and a film lifting plate 16 being connected between the two pull plates 15, and a plurality of film lifting knives 17 being provided at the front end of the film lifting plate 16;

[0042] The screening mechanism 2 includes a primary screening assembly and a secondary screening assembly obliquely arranged in the frame 5, and the discharge end of the primary screening assembly is located above the feeding section space of the secondary screening assembly. The primary screening assembly and the secondary screening assembly each include at least two sets of driving wheels 21 and driven wheels 22. A conveyor belt 23 is annularly mounted on each set of driving wheels 21 and driven wheels 22. A plurality of screen bars 24 are parallelly mounted between the conveyor belts 23. Each screen bar 24 is provided with a rubber sleeve, and the rubber sleeve is provided with a plurality of rubber burrs 25.

[0043] The roller crushing mechanism 3 includes a group of primary crushing rollers and a group of secondary crushing rollers arranged between the primary screening assembly and the secondary screening assembly, and the primary crushing rollers are arranged above the secondary crushing rollers. The primary crushing rollers and the secondary crushing rollers each include a fixed squeezing roller 31 and an adjustable squeezing roller 32 arranged in parallel. The fixed squeezing roller 31 is mounted on the frame 5 through a bearing. The adjustable squeezing roller 32 is movably arranged in the adjustment mounting hole of the frame 5, and its two ends are respectively movably mounted on one side of an adjustment swing arm 33. The other side of the adjustment swing arm 33 is hinged to an adjustment pull rod 34, and the adjustment pull rod 34 is connected to the frame 5 through a spring. The end of the adjustment swing arm 33 is provided with a swing arm shaft 35, and the swing arm shaft 35 is mounted on the frame 5.

[0044] The fan film blowing mechanism 4 includes a fan 41 arranged below the end space of the secondary screening component. The air outlet of the fan 41 is set upward, and an air guide plate 42 is provided at the air outlet tilted toward the rear and upper part.

[0045] Example 2:

[0046] like Figures 1 to 10 As shown, the deep tillage layer residual film recovery device of this embodiment includes a soil lifting mechanism 1, a screening mechanism 2, a roller crushing mechanism 3, a fan film blowing mechanism 4 and a frame 5, wherein:

[0047] The soil lifting mechanism 1 includes a film lifting shaft 11 arranged at the front of the frame 5, and the two ends of the film lifting shaft 11 are respectively equipped with eccentric wheels 12, and the eccentric shaft of the eccentric wheel 12 is equipped with a film lifting rod 13, and the other end of the film lifting rod 13 is equipped with a pull rod shaft 14, and the two ends of the pull rod shaft 14 are respectively provided with a pull plate 15, and the lower end of the pull plate 15 is hingedly connected to the frame 5, and a film lifting plate 16 is connected between the two pull plates 15, and a plurality of film lifting knives 17 are provided at the front end of the film lifting plate 16; a plurality of guide rods 18 are provided at the rear end of the film lifting knife 17, and the guide rod 18 is U-shaped; a turbine box 19 is provided on the film lifting shaft 11.

[0048] The screening mechanism 2 includes a primary screening assembly and a secondary screening assembly obliquely arranged in the frame 5, and the discharge end of the primary screening assembly is located above the feeding section space of the secondary screening assembly. The primary screening assembly and the secondary screening assembly each include at least two sets of driving wheels 21 and driven wheels 22. A conveyor belt 23 is annularly installed on each set of driving wheels 21 and driven wheels 22. A number of screen bars 24 are installed in parallel between the conveyor belts 23. Each screen bar 24 is provided with a rubber sleeve, and the rubber sleeve is provided with a number of rubber burrs 25; a support wheel 26 is provided on the lower side of the conveyor belt 23. A film-removing assembly 27 is provided below each of the primary and secondary screening assemblies. The assembly comprises a film-removing roller 27-1, sleeved with a shaft sleeve 27-2, mounted on which are arrays of plate racks 27-3, each of which is provided with a film-removing plate 27-4. A retaining plate 28 and a crushing assembly 29 are provided above the feeding end of the secondary screening assembly. The crushing assembly 29 comprises a crushing roller 29-1, mounted on which are arrays of crushing blades 29-2. The driving wheel 21 and driven wheel 22 are pulleys, and the conveyor belt 23 is a belt, or the driving wheel 21 and driven wheel 22 are sprockets, and the conveyor belt 23 is a chain.

[0049] The roller crushing mechanism 3 includes a group of primary crushing rollers and a group of secondary crushing rollers arranged between the primary screening assembly and the secondary screening assembly, and the primary crushing rollers are arranged above the secondary crushing rollers. The primary crushing rollers and the secondary crushing rollers both include a fixed squeezing roller 31 and an adjustable squeezing roller 32 arranged in parallel. The fixed squeezing roller 31 is mounted on the frame 5 through a bearing, and the adjustable squeezing roller 32 is movably arranged in the adjustment mounting hole of the frame 5, and its two ends are respectively movably mounted on one side of the adjustment swing arm 33, and the other side of the adjustment swing arm 33 is hinged to the adjustment pull rod 34, and the adjustment pull rod 34 is connected to the frame 5 through a spring. The end of the adjustment swing arm 33 is provided with a swing arm shaft 35, and the swing arm shaft 35 is mounted on the frame 5.

[0050] The blower film blowing mechanism 4 includes a blower 41 disposed below the end space of the secondary screening assembly. The air outlet of the blower 41 is upwardly directed, and an air guide plate 42 is provided at the outlet, tilted upward and rearward. The blower 41 includes a housing 41-1, with an air inlet provided on the lower side of the housing 41-1 and an air outlet provided at the upper rear side. A blower shaft 41-2 is disposed within the housing 41-1, and a plurality of partitions 42-3 are provided on the blower shaft 41-2. Fan blades 41-4 are provided between adjacent partitions 42-3.

[0051] The frame 5 includes a group of side panels 51, and the rear part of the side panels 51 is provided with walking wheels 52 and a film collecting frame 53. The front end of the lower part of the film collecting frame 53 is provided with a film blocking plate 54. Several cross beams 55 are connected between the two side panels 51. The cross beams 55 at the front are provided with a traction frame 56 and a group of depth-limiting wheel frames 57. The depth-limiting wheel frames 57 are equipped with telescopic rods 58, and the lower end of the telescopic rods 58 is equipped with depth-limiting wheels 59.

[0052] The transmission mechanism 6 includes a forward transmission shaft 61 and a reverse transmission shaft 62, and the forward transmission shaft 61 and the reverse transmission shaft 62 are respectively provided with gears 63 that mesh with each other. The forward transmission shaft 61 is connected to the film-forming shaft 11, and at least one end of the forward transmission shaft 61 is provided with a forward transmission wheel 64, which is connected to the driving wheel 21, the fixed squeezing roller 31 and the rotating shaft of the fan 41; the reverse transmission shaft 62 is provided with a reverse transmission wheel 65, which is connected to the two swing arm shafts 35, and each swing arm shaft 35 is connected to its corresponding adjustable squeezing roller 32; the transmission connection is a chain and sprocket combination connection or a pulley and belt combination connection.

[0053] It should be noted that the embodiments described herein are only some embodiments of the present invention, not all implementations of the present invention. The embodiments are merely illustrative and serve only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that can be thought of by ordinary technicians in this field without creative work, as well as other simple replacements and various variations of the technical solutions of the present invention, are within the scope of protection of the present invention.

Claims

1. A device for recovering residual film from deep tillage layer, characterized in that: It comprises a soil-lifting mechanism (1), a screening mechanism (2), a roller crushing mechanism (3), a fan film blowing mechanism (4) and a frame (5), wherein: The soil lifting mechanism (1) comprises a film lifting shaft (11) arranged at the front of the frame (5), the two ends of the film lifting shaft (11) are respectively equipped with eccentric wheels (12), the eccentric shaft of the eccentric wheel (12) is equipped with a film lifting rod (13), the other end of the film lifting rod (13) is equipped with a pull rod shaft (14), and the two ends of the pull rod shaft (14) are respectively provided with a pull plate (15), the lower end of the pull plate (15) is hingedly connected to the frame (5), and a film lifting plate (16) is connected between the two pull plates (15), and a plurality of film lifting knives (17) are provided at the front end of the film lifting plate (16); The screening mechanism (2) includes a primary screening assembly and a secondary screening assembly obliquely arranged in a frame (5), and a discharge end of the primary screening assembly is located above the feeding section space of the secondary screening assembly. The primary screening assembly and the secondary screening assembly each include at least two sets of driving wheels (21) and driven wheels (22), a conveyor belt (23) is annularly mounted on each set of driving wheels (21) and driven wheels (22), and a plurality of screen bars (24) are mounted in parallel between the conveyor belts (23), each screen bar (24) is provided with a rubber sleeve, and the rubber sleeve is provided with a plurality of rubber burrs (25); The roller crushing mechanism (3) includes a group of primary crushing rollers and a group of secondary crushing rollers arranged between the primary screening assembly and the secondary screening assembly, and the primary crushing roller is arranged above the secondary crushing roller. The primary crushing roller and the secondary crushing roller each include a fixed squeezing roller (31) and an adjustable squeezing roller (32) arranged in parallel. The fixed squeezing roller (31) is mounted on the frame (5) through a bearing. The adjustable squeezing roller (32) is movably arranged in an adjustment mounting hole of the frame (5), and its two ends are movably mounted on one side of an adjustment swing arm (33). The other side of the adjustment swing arm (33) is hinged to an adjustment pull rod (34). The adjustment pull rod (34) is connected to the frame (5) through a spring. The end of the adjustment swing arm (33) is provided with a swing arm rotating shaft (35), and the swing arm rotating shaft (35) is mounted on the frame (5). The blower film blowing mechanism (4) comprises a blower (41) arranged below the end space of the secondary screening assembly, the air outlet of the blower (41) is arranged upward, and an air guide plate (42) is arranged at the air outlet tilted toward the rear and upward.

2. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The rear end of the film-forming knife (17) is provided with a plurality of guide rods (18), and the guide rods (18) are U-shaped.

3. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The film-forming rotating shaft (11) is provided with a turbine box (19).

4. The deep tillage layer residual film recovery device according to claim 1, characterized in that: A supporting wheel (26) is provided on the lower side of the conveyor belt (23).

5. The deep tillage layer residual film recovery device according to claim 1, characterized in that: A film-moving assembly (27) is provided below the primary screening assembly and the secondary screening assembly. The film-moving assembly (27) comprises a film-moving roller (27-1), a shaft sleeve (27-2) is sleeved on the film-moving roller (27-1), a plurality of plate racks (27-3) are provided on the shaft sleeve (27-2), and each group of plate racks (27-3) is provided with a film-moving plate (27-4).

6. The deep tillage layer residual film recovery device according to claim 1, characterized in that: A baffle plate (28) and a crushing assembly (29) are provided above the feeding end of the secondary screening assembly. The crushing assembly (29) comprises a crushing roller shaft (29-1) on which an array of crushing blades (29-2) are provided.

7. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The driving wheel (21) and the driven wheel (22) are pulleys, and the conveyor belt (23) is a belt, or the driving wheel (21) and the driven wheel (22) are sprockets, and the conveyor belt (23) is a chain.

8. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The fan (41) comprises a housing (41-1), an air inlet is provided on the lower side of the housing (41-1), an air outlet is provided on the upper rear side thereof, a fan shaft (41-2) is provided in the housing (41-1), a plurality of partitions (42-3) are provided on the fan shaft (41-2), and fan blades (41-4) are provided between adjacent partitions (42-3).

9. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The frame (5) comprises a group of side panels (51), the rear part of the side panels (51) is provided with a walking wheel (52) and a film collecting frame (53), the front end of the lower part of the film collecting frame (53) is provided with a film blocking plate (54), a plurality of cross beams (55) are connected between the two side panels (51), a traction frame (56) and a group of depth-limiting wheel frames (57) are provided on the cross beams (55) at the front, a telescopic rod (58) is provided on the depth-limiting wheel frame (57), and a depth-limiting wheel (59) is provided at the lower end of the telescopic rod (58).

10. The deep tillage layer residual film recovery device according to claim 1, characterized in that: The invention also includes a transmission mechanism (6), wherein the transmission mechanism (6) includes a forward transmission shaft (61) and a reverse transmission shaft (62), and the forward transmission shaft (61) and the reverse transmission shaft (62) are respectively provided with gears (63) that mesh with each other, and the forward transmission shaft (61) is transmission-connected with the film-forming shaft (11), and at least one end of the forward transmission shaft (61) is provided with a forward transmission wheel (64), and the forward transmission wheel (64) is transmission-connected with the driving wheel (21), the fixed squeezing roller (31) and the rotating shaft of the fan (41); the reverse transmission shaft (62) is provided with a reverse transmission wheel (65), and the reverse transmission wheel (65) is transmission-connected with two swing arm rotating shafts (35), and each swing arm rotating shaft (35) is transmission-connected with its corresponding adjustable squeezing roller (32); the transmission connection is a chain sprocket combination connection or a pulley and belt combination connection.

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