Residual film recovery mechanism and device, straw crushing residual film recovery and separation device

Abstract

A residual film recovery mechanism and device, and a straw crushing residual film recovery and separation device, relate to the field of agricultural machinery. The residual film recovery mechanism includes a frame, a film shovel arranged on the frame, a film removal device, and a conveyor belt located at the rear side of the film removal device. The film shovel is arranged at the bottom of the frame and extends toward the front and lower side of the frame; the film removal device is arranged at the bottom of the frame and located on the upper side of the film shovel. The film removal device includes film picking teeth, which can extend from the lower end of the film removal cylinder and pick up the residual film on the film removal shovel and then remain in the extended state and run from the lower end, front end, and upper end of the film removal cylinder to the rear end in sequence. The film picking teeth located at the rear end of the film removal device are retracted to transport the residual film to the conveyor belt. The above-mentioned residual film recovery mechanism and device, and the straw crushing residual film recovery and separation device can effectively improve the residual film recovery efficiency, residual film recovery rate and the quality of the recovered residual film. At the same time, the straw crushing residual film recovery and separation device realizes the integration of straw crushing residual film recovery and debris separation.

Description

Technical Field

[0001] The present application relates to the field of agricultural machinery, and more specifically, to a residual film recovery mechanism and device, and a straw crushing residual film recovery and separation device. Background Art

[0002] The residual film recovery mechanism of the prior art cuts the plastic film covering the ground into small sections during walking, and then uses a soil-entering shovel immediately behind the film cutting roller to be obliquely inserted into the ground to scoop up the residual film sections together with soil, rocks and debris, and continuously lifts and sends them out through the film-lifting rod extending backwards, and then the residual film is picked up by the film-picking teeth continuously extending from the film-picking cylinder sleeve on the film-picking device at the rear and transported upward along the surface of the film-picking cylinder sleeve, and the product is sucked away by the air inlet of the suction fan arranged above the film-picking cylinder sleeve and sent into the film collecting box.

[0003] However, in the actual operation process, it was found that although the residual film was effectively recovered by the above-mentioned technical means, some residual film still remained in the field, and the recovery rate of residual film needs to be further improved. When other methods are used to recover residual film, there are more debris, resulting in high energy consumption of the suction fan and low quality of the recovered residual film (many debris). In addition, the utilization rate of the film collection box is low, and more residual film recovery points need to be set up, which easily leads to secondary pollution of residual film. Therefore, how to further improve the recovery rate of residual film and the quality of recovered residual film, and prevent residual film from polluting the environment and cultivated land, is a problem that technicians in this field have to face.

[0004] At the same time, for crops such as cotton, corn and other film-covered crops, the straw is generally harvested by machinery or manpower after harvest, and then the residual film is recovered. After the residual film is recovered, the harvested straw can be returned to the field. The overall operation intensity is high and cumbersome. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a residual film recovery mechanism and device, and a straw crushing residual film recovery and separation device, which can improve at least one of the above-mentioned problems.

[0006] In a first aspect, an embodiment of the present application provides a residual film recovery mechanism, which includes: a frame, and a film shovel, a film removal device, and a conveyor belt located at the rear side of the film removal device.

[0007] The film scraper is arranged at the bottom of the frame and extends toward the front and lower part of the frame.

[0008] The film removing device is arranged at the bottom of the frame and located on the upper side of the film removing shovel. The film removing device includes a film removing cylinder arranged on the frame and a film picking tooth in the film removing cylinder. The film removing cylinder is provided with a hole for the film picking tooth to extend and retract. The film picking tooth can extend from the lower end of the film removing cylinder and pick up the residual film on the film removing shovel and then maintain the extended state and run from the lower end, the front end, the upper end to the rear end of the film removing cylinder in sequence. The film picking tooth located at the rear end of the film removing cylinder is retracted into the film removing cylinder through the hole to transport the residual film to the conveyor belt.

[0009] In the above implementation process, the use of a film lifting shovel to directly lift the film avoids the generation of broken films caused by film cutting and ensures the integrity of the film. The cooperation between the film lifting teeth and the film lifting shovel ensures that the residual film scooped up by the film lifting shovel is continuously picked up by the film lifting teeth and transported to the conveyor belt. In this process, since the residual film is relatively complete, the broken films are avoided from falling to the ground during the transmission process, thereby improving the recovery rate of the residual film. At the same time, in this process, the setting position and cooperation method of the film lifting teeth and the film lifting shovel cause some impurities such as soil blocks and straw residues to fall directly to the ground during the transmission process, thereby improving the recovery rate of the residual film and the quality of the recovered residual film. In addition, the whole process is smooth, thereby improving the efficiency and stability of the separation of residual film recovery and debris.

[0010] In a possible implementation, the film taking device further includes a central shaft rotatably connected to the frame, track plates disposed at both ends of the film taking cylinder, and a rotating assembly.

[0011] The central axis is fixedly connected with the film taking cylinder, the track plate is fixedly connected with the frame body, and the track plate is provided with an eccentric track.

[0012] Each rotating assembly includes a first connecting shaft, a second connecting shaft corresponding to the first connecting shaft one by one, and a connecting piece. Both ends of the first connecting shaft are provided with sliders that cooperate with the eccentric track. The first connecting shaft is provided with a plurality of film picking teeth arranged at intervals along the axial direction of the first connecting shaft. Both ends of the second connecting shaft are connected to the film picking cylinder. One end of the connecting piece is connected to the first connecting shaft, and the other end is hinged to the second connecting shaft.

[0013] In the above-mentioned implementation process, through the cooperation of the central axis, the track disk and the rotating assembly, it is effectively achieved that the film picking teeth can extend from the lower end of the film cylinder and pick up the residual film on the film shovel, and then maintain the extended state to move from the lower end, the front end, the upper end to the rear end of the film cylinder in sequence. The film picking teeth located at the rear end of the film cylinder are retracted into the film cylinder through the hole. At the same time, the force is reasonable and the operation is more stable, which ensures the overall movement stability of the film picking and conveying. At the same time, since the film moves from the lower end, the front end, the upper end to the rear end of the film cylinder, the residual film can be thrown on the conveyor belt at this time, further separating the residual film and debris on the conveyor belt, which is convenient for subsequent separation.

[0014] In a possible implementation, there are multiple rotating components, and the multiple rotating components are arranged at equal intervals along the circumference of the central axis, and the number of film picking teeth in each rotating component corresponds one to one.

[0015] In the above implementation process, the number of film picking teeth in each rotating assembly corresponds one to one, thereby ensuring the stability of operation and simplifying the structure of the film picking device.

[0016] Although the above-mentioned arrangement effectively improves the recovery rate of residual film, the applicant found that during actual use, some residual film is still buried in the ground. The reason why this part of the residual film is not recovered is that during the film covering process, the two edges of the film are buried in the ground to fix the film. If a film-removing shovel with the same height as the film-removing teeth is directly extended into the ground, not only will the energy consumption be large, but there will also be a lot of impurities, and the large amount of impurities will easily bury some smaller residual films again in the ground.

[0017] Therefore, in a possible embodiment, the film-lifting shovel has a plurality of film-lifting teeth arranged side by side at intervals, and the film-lifting teeth located at both ends of the film-lifting shovel are lower than the film-lifting teeth located in the middle of the film-lifting shovel.

[0018] In the above implementation process, on the one hand, the film is removed by using the film-removing teeth, which has a certain gap compared to directly using a plate-shaped film-removing tool. Under the condition of a suitable gap, it can not only effectively remove the film, but also drop some fine soil blocks and other impurities directly into the ground, reducing the difficulty of subsequent impurity separation. At the same time, the film-removing teeth at both ends can go deep into the ground to pick up the residual film buried in the ground. And under the above setting conditions, the film-removing teeth in the middle do not need to be inserted too deeply into the ground, effectively reducing energy consumption.

[0019] In a possible embodiment, the conveyor belt is provided with a flexible scraper protruding from the outer surface of the conveyor belt and the conveyor belt can selectively conflict with the rear end of the film taking cylinder and the film picking teeth located at the rear end of the film taking cylinder.

[0020] In the above implementation process, when the flexible scraper collides with the rear end of the film-taking cylinder and the film-picking teeth located at the rear end of the film-taking cylinder, the flexible scraper can scrape off the residual film and debris remaining on the film-picking teeth and the film-taking cylinder in contact with it, ensuring that the film-picking teeth can effectively pick up the residual film when cooperating with the film-picking shovel in the next step, thereby improving the recovery rate and efficiency of the residual film and preventing the residual film or debris from clogging the holes on the film-taking cylinder. And because the flexible scraper protrudes from the outer surface of the conveyor belt, it can also prevent the residual film separated during the conveying process from returning to the feed end of the conveyor belt (the end close to the film-picking cylinder), further improving the residual film recovery efficiency.

[0021] In a possible implementation scheme, the residual film recovery mechanism also includes a suction device and a film collecting box respectively arranged on the frame. The suction device is located at an end of the conveyor belt away from the film removing device. The air inlet of the suction device faces the conveyor belt, and the air outlet of the suction device is connected to the film collecting box. The end of the conveyor belt away from the film removing device is spaced apart from the suction device to form a debris discharge port.

[0022] In the above implementation process, the residual film on the conveyor belt is effectively recovered by utilizing the cooperation of the fan and the film collecting box. At the same time, larger clods of soil, plants and other debris can be discharged into the field through the debris discharge port.

[0023] Further optionally, the conveyor belt has sieve holes, and the frame is provided with a vibration mechanism for driving the conveyor belt to vibrate.

[0024] In the above implementation process, due to the cooperation between the sieve holes and the vibration mechanism, during the transmission process, smaller debris can directly pass through the sieve holes into the ground, reducing the debris content in the residual film. At the same time, since the recovered residual film is relatively complete, it is not easy to fall from the sieve holes, ensuring the residual film recovery rate while improving the separation efficiency of residual film and debris. At the same time, the conveyor belt vibrates through the vibration mechanism, which not only reduces some larger impurities such as soil blocks through vibration and drops them from the sieve holes to the ground, reducing the debris content on the conveyor belt, but also fully separates the mixed residual film and debris through vibration, improving the residual film recovery rate of the subsequent fan.

[0025] In a second aspect, an embodiment of the present application provides a straw crushing and residual film recovery and separation device, which includes the residual film recovery mechanism provided in the first aspect and a field return machine for connecting to the front of a vehicle.

[0026] Among them, the field return machine is connected to the front end of the residual film recovery mechanism, and the rear end of the field return machine is rotatably provided with a first full-ridge surface depth limiting roller, and the first full-ridge surface depth limiting roller is located at the bottom of the field return machine.

[0027] In the above implementation process, the straw crushing, residual film recovery and debris separation effect is achieved through the cooperation between the field returner and the residual film recovery mechanism. At the same time, the first full-ridge surface depth limiting roller of the field returner is used to ensure the full-ridge surface depth limit of the residual film recovery mechanism. Even if the ground is uneven, the residual film recovery mechanism can operate smoothly and remove the film smoothly, thereby preventing the problem of some residual film not being recovered due to uneven ground.

[0028] In a possible implementation scheme, the field returning machine includes: a frame, a crushing mechanism, and a straw output device.

[0029] The side wall of the frame is provided with a receiving groove located outside the frame, and the opening of the receiving groove is toward the rear end or rear outer side of the frame; the crushing mechanism is used for crushing the straw and throwing out the crushed straw, and the crushing mechanism is rotatably arranged at the front end of the frame; the straw output device is located at the rear end of the crushing mechanism, and the straw output device includes a collecting groove arranged on the frame and an auger mechanism rotatably arranged in the collecting groove, and the feed port of the collecting groove is toward the crushing mechanism for receiving the crushed straw thrown out from the crushing mechanism, and the discharge port of the collecting groove is connected with the receiving groove, and one end of the auger shaft of the auger mechanism extends into the receiving chamber, and the auger shaft located in the receiving chamber is provided with a plurality of blades arranged at intervals along the circumference of the auger shaft.

[0030] In the above implementation process, through the above arrangement, the wind force is generated by the blades, so that the crushed straw can be continuously thrown out from the rear end or rear outer side of the frame, preventing the crushed straw from blocking the discharge port of the collection trough, and at the same time preventing the crushed straw from being directly thrown onto the residual film to be recycled, increasing the difficulty of separating the residual film from debris.

[0031] In the third aspect, an embodiment of the present application provides a residual film recovery device, which includes the residual film recovery mechanism provided in the first aspect and a connecting frame for connecting the front of a vehicle, the connecting frame is connected to the front end of the residual film recovery mechanism, and a second full-ridge surface depth limiting pressure roller is rotatably provided at the bottom of the connecting frame, and the width of the second full-ridge surface depth limiting pressure roller is greater than or equal to the width of the film removing shovel.

[0032] In the above implementation process, the first full-ridge surface depth limiting roller of the field return machine is used to ensure the full-ridge surface depth limit of the residual film recovery mechanism, ensuring that even if the ground is uneven, the residual film recovery mechanism can operate smoothly and remove the film smoothly, thereby preventing the problem of some residual film not being recovered due to uneven ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic structural diagram of the straw crushing and residual film recovery and separation device according to Example 1 from a first perspective;

[0035] Figure 2 It is a structural schematic diagram of the straw crushing residual film recovery and separation device of Example 1 from a second perspective;

[0036] Figure 3 It is a structural schematic diagram of the film-lifting shovel of Example 1;

[0037] Figure 4 It is a schematic diagram of the assembly of the film removal device, film removal shovel and conveyor belt of Example 1;

[0038] Figure 5 It is a structural schematic diagram of the film removal device of Example 1 from a first viewing angle;

[0039] Figure 6 It is a structural schematic diagram of the film removal device of Example 1 from a second viewing angle;

[0040] Figure 7 It is a schematic diagram of the assembly of the internal structure of the film removal device of Example 1;

[0041] Figure 8 It is a structural schematic diagram of the field returning machine of Example 1;

[0042] Fig. 9 It is a structural schematic diagram of the residual film recovery device of Example 2 from a first perspective;

[0043] Fig.10 This is a schematic structural diagram of the residual film recovery device of Example 2 from a second perspective.

[0044] Icons: 10-residual film recovery mechanism; 100-frame; 101-travel wheel; 110-film shovel; 111-film tooth; 120-film removal device; 121-film removal cylinder; 1211-hole; 123-film picking tooth; 124-center axis; 125-track plate; 1251-eccentric track; 126-connecting ribs; 127-first connecting axis; 128-second connecting axis; 130-conveyor belt; 131-screen bar; 133-screen hole; 135-flexible scraper; 140-air suction Device; 160-discharge port for debris; 150-film collecting box; 151-hydraulic device; 153-cover body; 20-straw crushing and residual film recovery and separation device; 200-returning machine; 210-frame; 220-first full-ridge surface depth-limiting roller; 230-crushing mechanism; 241-collecting trough; 2461-top wall; 2462-bottom wall; 2464-first side wall; 2465-second side wall; 30-residual film recovery device; 310-connecting frame; 320-second full-ridge surface depth-limiting roller. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] In this application, the residual film recovery mechanism is described in its actual usage state, wherein the two ends of the walking direction of the residual film recovery mechanism are respectively regarded as the front end and the rear end, and the directions perpendicular to the walking direction and the vertical direction are respectively regarded as the lateral direction.

[0047] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0048] Example 1

[0049] See also Figure 1 as well as Figure 2 The present application provides a straw crushing and residual film recovery and separation device 20, which includes a residual film recovery mechanism 10 and a field return machine 200 for connecting to the front of a vehicle, and the field return machine 200 is connected to the front end of the residual film recovery mechanism 10.

[0050] Please continue reading Figure 1 as well as Figure 2 The residual film recovery mechanism 10 includes: a frame 100, a film shovel 110, a film removal device 120, a conveyor belt 130 located at the rear side of the film removal device 120, a driving mechanism, an air suction device 140 and a film collecting box 150 respectively arranged on the frame 100.

[0051] The frame 100 has running wheels 101 . The specific configuration of the frame 100 may refer to the relevant technology and will not be described in detail here.

[0052] The film scraper 110 is disposed at the bottom of the frame 100 and extends toward the front and lower side of the frame 100 , so as to scrape up the residual film laid on the ground during the moving process.

[0053] The applicant discovered that some residual film was still buried in the ground during actual use. The reason why this part of the residual film was not recovered was that during the film covering process, the two edges of the film were buried in the ground to fix the film. If a film-removing shovel 110 with the same height as the film-removing teeth 111 was directly extended into the ground, not only would the energy consumption be large, but there would also be a lot of impurities, and the large amount of impurities would easily bury some smaller residual film in the ground again.

[0054] Therefore, in some examples shown in the present application, the film-lifting shovel 110 may be a film-lifting knife with both ends lower than the middle portion, wherein the film-lifting knife may be provided with a plurality of slits to allow the scooped tiny debris to flow out from the slits.

[0055] See also Figure 3In this embodiment, the film removing shovel 110 has a plurality of film removing teeth 111 which are spaced apart and arranged side by side in the transverse direction, and each film removing tooth 111 extends toward the front and lower part of the frame 100. Since there is a certain gap between two adjacent film removing teeth 111, it can not only remove the film effectively, but also can drop some fine soil blocks and other impurities directly into the ground, reducing the difficulty of subsequent impurity separation.

[0056] In order to ensure the reliability of film removal, the film removal shovel 110 has a plurality of film removal teeth 111 arranged side by side at equal intervals, wherein the distance between two adjacent film removal teeth 111 can be set according to actual needs. In order to ensure that the film removal teeth 111 are smoothly inserted into the ground, one end of the film removal teeth 111 for inserting into the ground has a cut surface so that the longitudinal thickness of the film removal teeth 111 gradually decreases.

[0057] Furthermore, the film-lifting teeth 111 at both ends of the film-lifting shovel 110 are lower than the film-lifting teeth 111 at the middle of the film-lifting shovel 110. For example, the film-lifting teeth 111 at both ends are 30-50 mm lower than the film-lifting teeth 111 at the middle, for example, 40 mm. The specific setting can be made according to the actual film-laminating method, so that the film-lifting teeth 111 at both ends can penetrate deep into the ground to pick up the residual film buried in the ground. Under the above setting conditions, the film-lifting teeth 111 at the middle do not need to be inserted too deeply into the ground, effectively reducing energy consumption.

[0058] It should be noted that the film scraper 110 is arranged at the bottom of the frame 100 and the two remain fixed during actual use, that is, the film scraper 110 can be directly welded to the bottom of the frame 100, or fixed to the bottom of the frame 100 by bolts or the like.

[0059] In some other examples shown in the present application, the distance between the film removing shovel 110 and the ridge surface is adjustable, that is, the distance between the film removing shovel 110 and the frame 100 is adjustable. For example, the frame 100 has a downwardly extending mounting plate (not shown), and both ends of the film removing shovel 110 are respectively connected to the mounting plate by screws, and the mounting plate is vertically provided with a plurality of screw holes 1211 that cooperate with the screws.

[0060] See also Figure 2 as well as Figure 4 The film removal device 120 is used to cooperate with the film removal shovel 110 and the conveyor belt 130. The film removal device 120 picks up the residual film from the film removal shovel 110 and transports it to the conveyor belt 130. Figure 4 The running directions of the film taking device 120 and the conveyor belt 130 are shown by arrows.

[0061] The film taking device 120 is disposed at the bottom of the frame 100 and located on the upper side of the film lifting shovel 110 . The film taking device 120 includes a film taking cylinder 121 and film picking teeth 123 .

[0062] Specifically, see Figure 2 , Figure 4 as well as Figure 5 The film taking cylinder 121 is horizontally arranged on the frame 100, and the film picking teeth 123 are arranged in the film taking cylinder 121. The film taking cylinder 121 is provided with a hole 1211 for the film picking teeth 123 to extend and retract. The film picking teeth 123 can extend from the lower end of the film taking cylinder 121 and pick up the residual film on the film lifting shovel 110, and then keep the extended state and run from the lower end, the front end, the upper end to the rear end of the film taking cylinder 121 in sequence. The film picking teeth 123 located at the rear end of the film taking cylinder 121 are retracted into the film taking cylinder 121 through the hole 1211 to transport the residual film to the conveyor belt 130. Through the above method, the residual film scooped by the film lifting shovel 110 is effectively continuously picked up by the film picking teeth 123 and transported to the conveyor belt 130, while improving the residual film recovery rate and the quality of the recovered residual film, and the whole process is smooth, improving the efficiency and stability of the residual film recovery and debris separation.

[0063] It should be noted that the film cylinder 121 can be fixedly mounted on the frame 100, in which case only the film picking teeth 123 are continuously moving; or the film cylinder 121 can be rotatably mounted on the frame 100, and the film picking teeth 123 are also continuously moving. At the same time, the extension and retraction of the film picking teeth 123 can be controlled by, for example, an electric telescopic rod, and then controlled by a motor to move from the lower end, front end, and upper end of the film cylinder 121 to the rear end.

[0064] See also Figure 6 as well as Figure 7 In this embodiment, the film taking device 120 includes a central shaft 124 rotatably connected to the frame 100, track plates 125 disposed at both ends of the film taking cylinder 121, and a rotating assembly. The driving mechanism drives the central shaft 124 to rotate, for example, the driving mechanism includes a motor, and the motor is connected to the central shaft 124 by transmission, such as gear transmission, belt rotation or coaxial connection.

[0065] The central shaft 124 is fixedly connected to the film taking cylinder 121, for example, the central shaft 124 is fixedly connected to the film taking cylinder 121 through a connecting rib 126. The track plate 125 is located in the film taking cylinder 121 and is fixedly connected to the frame 100. The track plate 125 is provided with an eccentric track 1251. Each rotating assembly includes a first connecting shaft 127, a second connecting shaft 128 corresponding to the first connecting shaft 127, and a connecting member. Both ends of the first connecting shaft 127 are provided with sliders that cooperate with the eccentric track 1251. The first connecting shaft 127 is provided with a plurality of film picking teeth 123 arranged at intervals along the axial direction of the first connecting shaft 127. Both ends of the second connecting shaft 128 are connected to the film taking cylinder 121. One end of the connecting member is connected to the first connecting shaft 127, and the other end is hinged to the second connecting shaft 128. Through the above-mentioned setting method, the film picking teeth 123 can be effectively extended and moved from the lower end, front end, upper end to the rear end of the film tube 121, and the structure is simple and the operation is stable. The running trajectory of each film picking tooth 111 is stable, ensuring the stability of film picking and film transport.

[0066] Optionally, see Figure 6 The film picking teeth 123 are curved teeth, and the film picking teeth 123 gradually shrink from one end close to the central axis 124 to the end far from the central axis 124. When the film picking teeth 123 move to the front end of the film taking tube 121, the film picking teeth 123 bend upward. Under the above-mentioned setting conditions of the film picking teeth 123, the hole 1211 can be effectively prevented from being blocked, and it is also convenient to clear the blockage, and prevent the debris from entering the film taking tube 121 during the clearing.

[0067] Furthermore, in order to ensure the stability of operation and the smoothness of sorting, the number of rotating components is multiple, such as three, five, six, eight, etc., and the multiple rotating components are arranged at equal intervals along the circumference of the central axis 124, and the number of film picking teeth 123 in each rotating component corresponds one to one.

[0068] In order to ensure that the film picking teeth 123 can stably extend and retract from the holes 1211, the holes 1211 are long holes extending along the circumference of the film taking cylinder 121. At the same time, multiple rows of hole groups are arranged at equal intervals along the circumference of the film taking cylinder 121, and each row of hole groups is transversely provided with holes 1211 corresponding to the film picking teeth 123 in each rotating assembly, wherein in order to improve the utilization, the number of hole groups corresponds to the number of rotating assemblies.

[0069] It should be noted that in order to ensure that the film picking teeth 123 can obtain the residual film on the film removing teeth 111, in a specific setting, in the vertical direction, the film picking teeth 123 that runs to the lower end can move downward and extend into the gap between two adjacent film removing teeth 111, and the two are separated when running to the front and lower part. At this time, the film picking teeth 123 and the corresponding film removing teeth 111 are arranged in a staggered manner along the horizontal direction, but it should be noted that at this time, the film picking teeth 123 should not pass through the side of the film removing teeth 111 close to the ground, to ensure that the film picking teeth 123 effectively pick up the residual film and do not affect the work of the film removing teeth 111.

[0070] In the method shown in this embodiment, in the vertical direction, there is a certain gap between the film picking tooth 123 and the film removing tooth 111 running to the lower end (the gap width should not be too wide, and can be set according to actual needs, such as 1 cm, etc., which is not limited here), that is, the two are always not in contact. At this time, since the film removing tooth 111 is set toward the front and lower side (that is, it is inclined), as the residual film recovery mechanism 10 moves forward, the residual film will be continuously removed and accumulated by the film removing shovel 110, and the film picking tooth 123 can effectively pick up the accumulated residual film.

[0071] The conveyor belt 130 has a feeding end and a discharging end, wherein the feeding end is close to the film taking device 120 for receiving the residual film output by the film taking device 120 .

[0072] The driving mechanism is used to drive the conveyor belt 130 to move from the feed end to the discharge end. For example, the driving mechanism also includes a driving wheel and a driven wheel located in cooperation with the feed end and the discharge end. The driving wheel and the driven wheel are chain-driven to drive the conveyor belt 130 mounted on the driving wheel and the driven wheel to move. The driving wheel is connected to the central shaft 124 in transmission, and the rotation of the central shaft 124 drives the driving wheel and the driven wheel to rotate synchronously.

[0073] The conveyor belt 130 has a sieve hole 133. Specifically, for example, the conveyor belt 130 includes a plurality of sieve bars 131, and a sieve hole 133 is formed between two adjacent sieve bars 131. The frame 100 is provided with a vibration mechanism for driving the conveyor belt 130 to vibrate. The vibration mechanism can be, for example, a vibration roller, or a vibration roller rotatably arranged on the frame 100. Three convex points are arranged on the vibration roller. The conveyor belt 130 contacts the vibration roller, and each convex point rises to the highest point and then falls, so that the conveyor belt 130 completes one vibration. The vibration mechanism drives the conveyor belt to vibrate, and the degree of membrane impurity separation is further improved.

[0074] For further information, see Figure 4The conveyor belt 130 is laterally provided with a flexible scraper 135, which protrudes from the outer surface of the conveyor belt 130 and the conveyor belt 130 can selectively interfere with the rear end of the film-taking cylinder 121 and the film-picking teeth 123 located at the rear end of the film-taking cylinder 121. By setting the flexible scraper 135, it is ensured that the film-picking teeth 123 can effectively pick up the residual film when cooperating with the film-picking shovel 110 in the next step, thereby improving the recovery rate and efficiency of the residual film, and preventing the residual film or debris from clogging the hole 1211 on the film-taking cylinder 121. And because the flexible scraper 135 protrudes from the outer surface of the conveyor belt 130, it can also prevent the residual film separated during the transmission process from returning to the feed end of the conveyor belt 130 (the end close to the film-taking cylinder 121), further improving the recovery efficiency of the residual film. The material of the flexible scraper 135 is, for example, rubber, synthetic polymer material, etc.

[0075] Among them, the number of flexible scrapers 135 is at least two, for example, two, three, five, ten, etc. The specific number can be set according to actual needs. Multiple flexible scrapers 135 are distributed at intervals along the circumference of the conveyor belt 130, and each flexible scraper 135 is assembled on the screen bar 131 in the transverse direction.

[0076] The conveyor belt 130 may be arranged horizontally. To further increase the debris separation efficiency of the conveyor belt 130 , the conveyor belt 130 is arranged tilted, and the feed end of the conveyor belt 130 is lower than the discharge end.

[0077] The air suction device 140 is used to recover the residual film on the conveyor belt and transport it to the film collecting box 150 , and the air inlet of the air suction device 140 faces the conveyor belt 130 .

[0078] In this embodiment, the suction device 140 is located at the discharge end of the conveyor belt 130, and the film collecting box 150 is arranged at the rear end of the frame 100. The film collecting box 150 has pores for air circulation, but the pores should be small to prevent the residual film from falling. The air inlet of the suction device 140 faces the conveyor belt 130, and the air outlet of the suction device 140 is connected to the film collecting box 150. The end of the conveyor belt 130 away from the film removal device 120 is spaced from the suction device 140 to form a debris discharge port 160, which is used to directly transport larger debris to the land after the film is removed through the debris discharge port 160. The film collecting box 150 can be set with a first packaging mechanism (not shown in the figure, it can be designed by yourself or directly purchased from an existing one) according to actual needs to package the residual film recovered by the suction fan. The setting of the first packaging mechanism can ensure that the residual film after being packaged and bundled is not easily blown away by the wind after being discharged at a fixed discharge position, and is not easy to cause secondary pollution.

[0079] Among them, the residual film box is provided with a discharge port and a cover body 153. The cover body 153 can selectively close the discharge port to prevent the residual film from falling. For example, the residual film box and the cover body 153 are connected by a hydraulic device 151, and the hydraulic device 151 drives the cover body 153 to automatically open or close the discharge port, which makes loading and unloading more convenient.

[0080] It should also be noted that since the present application effectively ensures that the quality of the residual film finally recovered is high and contains less debris, it further effectively reduces the space occupied by debris in the residual film box and improves the utilization rate of the residual film box. Therefore, it can effectively reduce the number of emissions, save fuel consumption, and reduce the number of emission points to prevent residual film pollution. At the same time, the continuous working time is long, effectively improving work efficiency.

[0081] It should be noted that in some other embodiments shown in the present application, a second packaging mechanism can be directly provided on the frame 100 to replace the residual film box + first packaging mechanism. The second packaging mechanism is located at the rear end of the frame 100 and cooperates with the suction device 140 to package the residual film output from the air outlet of the suction device 140. The packaged residual film can be placed on the ground and then collected in a centralized manner. The residual film is not easy to be blown away. Among them, the second packaging mechanism can adopt a commonly used round bale packaging device.

[0082] See also Figure 1 as well as Figure 8 The field returning machine 200 includes a frame 210, a first full-ridge surface depth-limiting roller 220, a crushing mechanism 230 and a straw output device.

[0083] The first full-ridge surface depth limiting roller 220 is rotatably disposed at the rear end of the frame 210 and is located at the bottom of the frame 210. Specifically, the first full-ridge surface depth limiting roller 220 is located at the rear end of the straw output device, and the width of the first full-ridge surface depth limiting roller 220 is greater than or equal to the width of the film removing shovel 110.

[0084] The crushing mechanism 230 is used to crush the straw and throw out the crushed straw, and the crushing mechanism 230 is rotatably arranged at the front end of the frame 210. The arrangement of the crushing mechanism 230 can refer to the relevant technology, and will not be described in detail here.

[0085] The straw output device is located between the crushing mechanism 230 and the first full-ridge surface depth-limiting roller 220. The straw output device includes a collecting trough 241 arranged on the frame 210 and an auger mechanism (not shown) rotatably arranged in the collecting trough 241. The feed port of the collecting trough 241 faces the crushing mechanism 230 for receiving the crushed straw thrown out from the crushing mechanism 230. The trough wall surrounding the collecting trough 241 may be provided with some gaps for discharging fine debris or soil to facilitate subsequent cleaning.

[0086] At least one side wall of the frame 210 in the horizontal direction is provided with a receiving groove located outside the frame 210, and the opening of the receiving groove is toward the rear end or rear outer side of the frame 210. The discharge port of the collecting groove 241 is connected with the receiving groove, and one end of the auger shaft of the auger mechanism extends into the receiving cavity. The auger shaft located in the receiving cavity is provided with a plurality of blades (not shown) arranged at intervals along the circumference of the auger shaft.

[0087] In order to prevent the thrown straw from being scattered on the ground film, a receiving groove is only provided on one side of the frame 210. At the same time, the opening of the receiving groove faces the rear outer side of the frame 210.

[0088] In order to ensure that the opening is facing the rear outer side of the rack 210, in the vertical direction, the top wall 2461 constituting the accommodating slot is connected to a wind guide plate, which extends rearward and exceeds the bottom wall 2462 constituting the accommodating slot, and in the lateral direction, the first side wall 2464 constituting the accommodating slot extends rearward and exceeds the second side wall 2465 constituting the accommodating slot, wherein the first side wall 2464 is located on the side of the second side wall 2465 close to the rack 210, and the free end of the first side wall 2464 extends toward the rear outer side of the rack 210, and at the same time, the bottom wall 2462, the top wall 2461, the second side wall 2465 and the end of the second side wall 2465 toward the front end of the rack 210 are closed.

[0089] Among them, the angle between the connection between the wind guide plate and the top wall 2461 can be adjusted. For example, the wind guide plate and the top wall 2461 can be arranged in parallel, and the end of the wind guide plate away from the top wall 2461 sinks toward the side close to the ground, or the end of the wind guide plate away from the top wall 2461 is tilted toward the side close to the ground. Technical personnel in this field can set it according to actual needs.

[0090] One end of the bottom wall 2462 near the rear end is slightly upturned, ensuring that the crushed straw and wind sprayed out from the opening of the receiving groove will not be directly directed to the ground, effectively reducing the generation of dust and improving environmental protection benefits.

[0091] It should be noted that the traction point of the field return machine used to connect to the front of the vehicle is offset to the side close to the receiving trough. Under the above setting conditions, it can effectively avoid the problem that during actual operation, the tire of the tractor at one end laterally away from the receiving trough presses on the straw, resulting in the straw on this side not being effectively crushed.

[0092] Optionally, some of the straw crushing and residual film recovery and separation devices 20 shown in the present application may also include a head, such as a tractor head (not shown), which is connected to the front end of the field return machine 200.

[0093] In order to make the use of the residual film recovery mechanism 10 more intelligent, the straw crushing residual film recovery and separation device 20 can be provided with a monitoring system (not shown in the figure), wherein the monitoring system includes a first monitoring unit for monitoring the operating area, a second monitoring unit for monitoring the amount of residual film recovery, a third monitoring unit for monitoring the fuel consumption of the vehicle head, and a terminal respectively connected to the first monitoring unit, the second monitoring unit, and the third detection unit and outputting the monitoring results. The terminal is, for example, a computer, a mobile phone, etc. The first monitoring unit can be realized by monitoring through a camera or a satellite, and the second monitoring unit can be realized through data such as the weight of the recovered residual film and the area of ​​residual film on the ground. For details, please refer to the relevant technology and it can be directly customized, so I will not go into details here.

[0094] Example 2

[0095] See also Fig. 9 as well as Fig.10 A residual film recovery device 30 is provided, which differs from the first embodiment only in that a connecting frame 310 for connecting a vehicle head is used to replace the field return machine 200 in the first embodiment.

[0096] The connecting frame 310 is connected to the front end of the residual film recovery mechanism 10 , and a second full-ridge surface depth limiting pressure roller 320 is rotatably provided at the bottom of the connecting frame 310 , and the width of the second full-ridge surface depth limiting pressure roller 320 is greater than or equal to the width of the film shovel 110 .

[0097] Optionally, some residual film recovery devices 30 shown in the present application may further include a head (not shown), such as a tractor head, which is connected to the front end of the connecting frame 310 .

[0098] To sum up, the residual film recovery mechanism and device, and the straw crushing residual film recovery and separation device provided in this application can effectively improve the residual film recovery efficiency, residual film recovery rate and the quality of the recovered residual film. At the same time, the straw crushing residual film recovery and separation device realizes the integration of straw crushing residual film recovery and separation.

[0099] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A residual film recovery mechanism, characterized in that: include: A frame, and a film shovel, a film taking device and a conveyor belt located at the rear side of the film taking device arranged on the frame; Wherein, the film scraper is arranged at the bottom of the frame and extends toward the front and lower part of the frame; The film removing device is arranged at the bottom of the frame and located on the upper side of the film removing shovel. The film removing device includes a film removing cylinder arranged on the frame and a film picking tooth in the film removing cylinder. The film removing cylinder is provided with a hole for the film picking tooth to extend and retract. The film picking tooth can extend from the lower end of the film removing cylinder and pick up the residual film on the film removing shovel and then maintain the extended state to run from the lower end, the front end, the upper end to the rear end of the film removing cylinder in sequence. The film picking tooth located at the rear end of the film removing cylinder is retracted into the film removing cylinder through the hole to transport the residual film to the conveyor belt.

2. The residual film recovery mechanism according to claim 1, characterized in that: The film taking device also includes a central shaft rotatably connected to the frame, track plates arranged at both ends of the film taking cylinder, and a rotating assembly; The central shaft is fixedly connected to the film taking cylinder, the track plate is fixedly connected to the frame, and the track plate is provided with an eccentric track; Each of the rotating components includes a first connecting shaft, a second connecting shaft corresponding to the first connecting shaft one by one, and a connecting member. Both ends of the first connecting shaft are provided with sliding blocks that cooperate with the eccentric track. The first connecting shaft is provided with a plurality of film picking teeth arranged at intervals along the axial direction of the first connecting shaft. Both ends of the second connecting shaft are connected to the film taking cylinder. One end of the connecting member is connected to the first connecting shaft, and the other end is hinged to the second connecting shaft.

3. The residual film recovery mechanism according to claim 2, characterized in that: There are multiple rotating components, and the multiple rotating components are arranged at equal intervals along the circumference of the central axis. The number of the film picking teeth in each rotating component corresponds one to one.

4. The residual film recovery mechanism according to claim 1, characterized in that: The film-lifting shovel has a plurality of film-lifting teeth arranged side by side at intervals, and the film-lifting teeth located at both ends of the film-lifting shovel are lower than the film-lifting teeth located in the middle of the film-lifting shovel.

5. The residual film recovery mechanism according to claim 1, characterized in that: The conveyor belt is provided with a flexible scraper, the flexible scraper protrudes from the outer surface of the conveyor belt, and the conveyor belt can selectively conflict with the rear end of the film taking cylinder and the film picking teeth located at the rear end of the film taking cylinder.

6. The residual film recovery mechanism according to any one of claims 1 to 5, characterized in that: The residual film recovery mechanism also includes a suction device and a film collecting box respectively arranged on the frame. The suction device is located at an end of the conveyor belt away from the film removing device, the air inlet of the suction device faces the conveyor belt, and the air outlet of the suction device is connected to the film collecting box. The end of the conveyor belt away from the film removing device is spaced apart from the suction device to form a debris discharge port.

7. The residual film recovery mechanism according to claim 6, characterized in that: The conveyor belt has sieve holes, and the frame is provided with a vibration mechanism for driving the conveyor belt to vibrate.

8. A straw crushing and residual film recovery and separation device, characterized in that: It comprises the residual film recovery mechanism as described in any one of claims 1 to 7 and a field return machine for connecting to the front of a vehicle, the field return machine being connected to the front end of the residual film recovery mechanism, the rear end of the field return machine being rotatably provided with a first full-ridge surface depth limiting roller, the first full-ridge surface depth limiting roller being located at the bottom of the field return machine, the width of the first full-ridge surface depth limiting roller being greater than or equal to the width of the film removing shovel.

9. The straw crushing and residual film recovery and separation device according to claim 8 is characterized in that: The field returning machine comprises: A frame, wherein a side wall of the frame is provided with a receiving groove located outside the frame, and an opening of the receiving groove faces the rear end or rear outer side of the frame; A crushing mechanism for crushing the straw and throwing out the crushed straw is rotatably arranged at the front end of the frame; A straw output device is located at the rear end of the crushing mechanism, and includes a collecting trough arranged on the frame and an auger mechanism rotatably arranged in the collecting trough. The feed port of the collecting trough faces the crushing mechanism for receiving the crushed straw thrown out from the crushing mechanism, and the discharge port of the collecting trough is connected to the receiving trough. One end of the auger shaft of the auger mechanism extends into the receiving cavity, and the auger shaft located in the receiving cavity is provided with a plurality of blades arranged at intervals along the circumference of the auger shaft.

10. A residual film recovery device, characterized in that: It comprises the residual film recovery mechanism as described in any one of claims 1 to 7 and a connecting frame for connecting the front end of a vehicle, wherein the connecting frame is connected to the front end of the residual film recovery mechanism, and a second full-ridge surface depth-limiting pressure roller is rotatably provided at the bottom of the connecting frame, wherein the width of the second full-ridge surface depth-limiting pressure roller is greater than or equal to the width of the film removing shovel.

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