Straw post-processing device for harvester

Abstract

The invention provides a straw post-treatment device for a harvester, the straw post-treatment device comprises a rack, and a crushing part, a decomposition accelerator storage part, a mixing part, a discharging part and a soil covering part which are arranged on the rack, the rack is connected with the rear end of the harvester, and sorted straws in the harvester can enter the crushing part of the post-treatment device and are mixed with the crushing part of the post-treatment device; straw is crushed by the crushing part and then conveyed to the mixing part to be mixed with a decomposition accelerant conveyed by the decomposition accelerant storage part, a mixed straw mixture is conveyed to the discharging part, a main shaft of the soil covering part is linked with the soil turning part to rotate, the soil turning part firstly passes through a discharging opening of the discharging part in the rotating process, the straw mixture is laid in soil, and the soil covering part covers the soil. According to the post-treatment device, the straw mixture is discharged into the ground together with the soil, the straw mixture can be buried by the covering soil, and the post-treatment device effectively solves the problems that a traditional straw treatment mode is high in pollution degree and low in decay efficiency through the synergistic effect of mechanical smashing, chemical decay acceleration and soil covering.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural production, and particularly relates to a straw post-treatment device for a harvester. Background Art

[0002] Straw returning to the field is a method of directly or composting and applying straw (such as wheat straw, corn straw, and rice straw, etc.) that is not suitable for direct use as feed into the soil. This measure not only eliminates the air pollution caused by straw burning but also has the effect of increasing fertilizer and yield. After the straw is decomposed by microorganisms in the soil, it is converted into organic matter and available nutrients, improving soil fertility, soil structure, and promoting the virtuous cycle of the agricultural ecosystem.

[0003] However, in the prior art, when a harvester processes straw, it only evenly spreads the straw through a spreading device or sprays the crushed straw after crushing. The straw discharged is exposed on the ground surface. On the one hand, it will be scattered everywhere under the blowing of the wind, causing air pollution; on the other hand, being exposed on the ground surface is not conducive to its deterioration and decay, and the effect of straw returning to the field is not ideal, affecting subsequent tillage. In addition, the long-term exposed surface of the straw may become food for pests and diseases, increasing the risk of pests and diseases. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problems in the prior art that when a harvester processes straw, it only evenly spreads the straw through a spreading device or sprays the crushed straw after crushing, and the straw discharged is exposed on the ground surface, which not only may pollute the environment but also has a poor decay effect on the straw, affecting subsequent tillage.

[0005] To solve the above technical problems, an embodiment of the present invention discloses a straw post-treatment device for a harvester. This straw post-treatment structure is arranged at the rear end of the harvester and is connected to the straw conveying channel in the harvester.

[0006] Among them, the straw post-treatment device includes a frame, and a crushing component, a decay accelerator storage component, a mixing component, a discharging component, and a soil covering component arranged on the frame. The frame is connected to the harvester. The crushing component is located above the frame, and the inlet of the crushing component is connected to the straw conveying channel. The outlet of the crushing component is connected to the main inlet of the mixing component. The mixing component is also provided with a secondary inlet connected to the decay accelerator storage component. The discharge port of the mixing component is connected to the inlet of the discharging component. The discharging component has a discharge port.

[0007] Moreover, the soil covering component includes a main shaft rotatably installed on the lower side of the frame, and a plurality of soil turning members arranged at intervals along the circumference of the main shaft. The axis direction of the main shaft is perpendicular to the traveling direction of the harvester. The main shaft drives a plurality of soil turning members to rotate around its axis direction. The plurality of soil turning members sequentially pass through a soil turning position located below the main shaft and a material laying position corresponding to the discharge port of the discharging component.

[0008] As the harvester travels, the post-harvest straw treatment device harvests the crops into the harvester, and the crops are separated into grains and straw. The straw is input from the straw conveying channel to the crushing component. The crushed straw in the crushing component is conveyed from the main inlet to the mixing component. Moreover, the decay accelerator storage component conveys the decay accelerator into the mixing component from the secondary inlet. The straw and the decay accelerator are evenly mixed in the mixing component to form a straw mixture. The straw mixture is conveyed to the discharging component. The main shaft of the soil covering component drives a plurality of soil turning members to rotate around its axis direction. Any one of the soil turning members passes through the soil turning position and turns up the soil on the ground, and then passes through the material laying position. The discharge port of the discharging component discharges the straw mixture into the soil in the soil turning member. The soil turning member continues to rotate and re-discharges the straw mixture and the soil onto the ground, and the straw mixture is buried in the soil.

[0009] When this post-harvest straw treatment device is in use, it is connected to the rear end of the harvester through the frame. During the operation of the harvester, the crops along the way are harvested, and the grains and straw are separated by the sorting device. The separated straw is output from the straw conveying channel to the post-harvest straw treatment device. First, the straw is crushed by the crushing component, so that the straw is fragmented, which is convenient for subsequent transmission and decay. Further, the crushed straw enters the mixing component. Moreover, the decay accelerator storage component conveys the decay accelerator into the mixing component. The decay accelerator and the straw powder are fully mixed in the mixing component, so that the decay accelerator is fully mixed in the straw powder, which can evenly catalyze the decay of the straw and improve the decay efficiency of the straw. Furthermore, the mixed straw mixture is conveyed to the discharging component, and the main shaft of the soil covering component drives the soil turning members to rotate. During the rotation, the soil turning members first pass through the soil turning position to turn up the soil, and then move to the material laying position. The discharging component lays the straw mixture on the soil through the discharge port. When the soil turning members re-discharge the soil onto the ground, the straw mixture on the surface will be covered with soil. On the one hand, the straw mixture buried in the soil is not easily blown up by the wind, which not only avoids environmental pollution but also ensures that the straw mixture can stay in the soil to improve the soil quality. On the other hand, when the straw mixture is buried in the soil, the straw mixture can fully react with the microorganisms in the soil, which is more conducive to deterioration and facilitates the subsequent tillage to start quickly.

[0010] An embodiment of the present invention also discloses a straw post-processing device for a harvester, wherein the discharge component includes a cylindrical first shell, and an eccentric shaft and a plurality of swing walls rotatably arranged in the first shell, the axial direction of the first shell is parallel to the axial direction of the main shaft, a plurality of soil-turning pieces are arranged around the outer periphery of the first shell, and the main shaft is located on one side of the first shell along the axial direction and is connected to the plurality of soil-turning pieces through a connecting piece.

[0011] Annular slide rails are formed on the inner wall surfaces at both ends of the first housing in the axial direction. The axis of the eccentric shaft is staggered with the axis of the first housing. The eccentric shaft is connected to the main shaft in a predetermined transmission ratio.

[0012] Among them, one end of any one of the multiple swing walls is hinged to the outer surface of the eccentric shaft, and the other end is hinged to the slide rail on the first shell.

[0013] The eccentric shaft rotates and links with the rotation of multiple swing walls, and the volume of the storage cavity formed by any two adjacent swing walls and the wall surface of the first shell changes. The feed inlet is opened at the end of the first shell away from the main axis, and is formed to form a corresponding position with the largest volume of the storage cavity. The discharge port is opened on the side wall of the first shell, and is formed to form a corresponding position with the smallest volume of the storage cavity.

[0014] By adopting the above technical solution, the discharge component drives multiple swing walls to rotate in the first shell through the rotation of the eccentric shaft, so that the volume of the storage cavity surrounded by adjacent swing walls and the wall of the first shell changes periodically. When the volume of the storage cavity is the largest, the straw mixture is sucked in from the feed inlet; when the volume is the smallest, the material is discharged from the discharge port, thereby realizing continuous and stable material transportation and discharge, avoiding the blockage or intermittent discharge problems that may occur in traditional discharge components.

[0015] In addition, the discharge port is opened on the side wall of the first shell, corresponding to the position with the smallest volume of the storage cavity. The material is forced to be discharged at the minimum volume, ensuring that the discharge direction is precisely matched with the movement trajectory of the covering component, so that the straw mixture falls accurately into the soil turned up by the turning piece, thereby improving the covering and burial effect.

[0016] In addition, the first shell of the material discharging component is cleverly arranged on the inner side of the plurality of soil-turning parts without taking up any additional space, thereby making the structure of the post-processing device compact.

[0017] Therefore, the discharge component of this post-processing device achieves efficient, stable transportation and precise discharge of the straw mixture through the combined design of the eccentric shaft and the swing wall, optimizes the spatial coordination between the discharge component and the soil covering component, has the characteristics of compact structure, strong adaptability and convenient maintenance, and improves the overall performance and reliability of the post-processing device.

[0018] Embodiments of the present invention also disclose a straw post-treatment device for a harvester. The straw post-treatment device further includes a dust-proof cover, which is arranged on the frame and covers the side of the first housing facing away from the frame.

[0019] Wherein, a fan-shaped channel is formed between the dust-proof cover and the first housing, and the main shaft rotates and drives a plurality of soil-turning members to sequentially pass through the fan-shaped channel.

[0020] With the above technical solution, the dust-proof cover completely covers the side of the first housing facing away from the frame, forming a semi-closed space, blocking the outward diffusion of the dust generated during the discharge process of the straw mixture, effectively reducing the impact of straw dust on the health of the operator, and reducing the pollution to the surrounding environment of the harvester. Moreover, the fan-shaped channel formed between the dust-proof cover and the first housing can guide the air flow direction by reasonably designing the channel width and angle, avoiding the accumulation of dust inside the cover. Even under high-dust working conditions, it can ensure smooth air flow in the channel, preventing dust from flowing back into the harvester or overflowing into the environment.

[0021] Embodiments of the present invention also disclose a straw post-treatment device for a harvester. The straw post-treatment device further includes a water spraying component, which is arranged at the upper end of the dust-proof cover. The water spraying component includes a plurality of nozzles arranged at intervals along the axis direction of the first housing. The plurality of nozzles are all connected to a water tank through pipelines, and a water pump is arranged on the pipeline.

[0022] The main shaft drives a plurality of soil-turning members to rotate around its axis direction. The plurality of soil-turning members sequentially pass through the soil-turning position, the spreading position, and the water spraying position corresponding to the water spraying component. The plurality of nozzles spray water on the straw mixture inside the soil-turning members.

[0023] With the above technical solution, the water spraying component sprays water accurately on the straw mixture inside the soil-turning members through a plurality of nozzles arranged at intervals along the axis direction of the first housing, ensuring that the straw mixture obtains uniform moisture supplement during the soil-turning process, promoting the full contact of the decay accelerator with the straw and the soil, accelerating the straw decay process, and improving the soil fertility.

[0024] That is to say, the main shaft of the soil covering component drives the soil-turning members to sequentially pass through the soil-turning position, the spreading position, and the water spraying position, forming a continuous operation process of "soil-turning - spreading - water spraying". The soil-turning members turn up the soil at the soil-turning position, evenly spread the straw mixture on the turned-up soil at the spreading position, and spray water on the straw mixture by the nozzles at the water spraying position, realizing the deep mixing of the straw and the soil, and optimizing the soil structure. Moreover, spraying water mist on the straw mixture moistens the surface of the straw, reduces the generation and diffusion of dust, effectively reduces the dust pollution during the straw treatment process, and improves the operation environment.

[0025] Embodiments of the present invention also disclose a straw post-treatment device for a harvester. The straw post-treatment device further includes a soil pressing component, which is arranged at the lower end of the dust-proof cover. The soil pressing component extends horizontally, and in the vertical direction, the soil pressing component is higher than the bottom plate of the soil turning component at the soil turning position.

[0026] With the above technical solution, the soil pressing component is located at the lower end of the dust-proof cover and is higher than the bottom plate at the soil turning position. After the soil turning component finishes turning the soil and spreading the materials, the soil pressing component presses the straw mixture into the deep layer of the soil by gravity or slight downward pressure, making full contact with microorganisms and the soil environment, and accelerating the decomposition by corruption. Moreover, the compacted soil reduces water evaporation and improves the water retention capacity of the soil. The straw mixture forms a stable organic matter layer in the moist soil, providing nutrients for the growth of subsequent crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0028] Figure 2 It is a processing flow chart of straw in the straw post-treatment device provided by an embodiment of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the crushing component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of the mixing component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0031] Figure 5 It is a side view schematic diagram of the discharging component (removing the side wall) and the soil covering component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0032] Figure 6 It is a side view cross-sectional view of the discharging component (removing the side wall) and the soil covering component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the discharging component and the soil covering component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0034] Figure 8 It is a side view schematic diagram of the discharging component and the soil covering component of the straw post-treatment device for a harvester provided by an embodiment of the present invention;

[0035] Figure 9 It is a schematic structural diagram of the discharging component, the soil covering component, and the dust-proof cover of the straw post-treatment device for a harvester provided by an embodiment of the present invention.

[0036] Description of the reference numerals:

[0037] 10. Post-treatment device;

[0038] 100. Frame; 110. Connection end; 111. Shock-absorbing element;

[0039] 200. Crushing component; 201. Inlet; 202. Outlet;

[0040] 210. Second housing; 220. Auger;

[0041] 300. Accelerating decay agent storage component;

[0042] 400. Mixing component; 401. Main inlet; 402. Secondary inlet; 403. Discharge port;

[0043] 410. Third housing; 420. Agitator;

[0044] 500. Discharging component; 501. Inlet; 502. Discharge port;

[0045] 510. First housing; 511. Slide rail; 520. Eccentric shaft; 530. Swing wall;

[0046] 600. Soil covering component;

[0047] 610. Main shaft; 620. Soil turning member; 621. Support plate; 622. Bottom plate; 623. Soil turning part; 624. Connecting member;

[0048] 700. Dust cover; 800. Water spraying component; 900. Soil pressing component. Detailed implementation manners

[0049] When the harvester in the prior art processes straw, it only evenly spreads the straw through a spreading device or crushes and sprays the straw through a crushing device. The discharged straw is exposed on the ground surface, which may not only pollute the environment but also have a poor straw decay effect, affecting subsequent tillage.

[0050] To this end, the present invention provides a straw post-treatment device for a harvester. The straw post-treatment device includes a frame, as well as a crushing component, a decay accelerator storage component, a mixing component, a discharging component, and a soil covering component provided on the frame. The frame is connected to the rear end of the harvester. The sorted straw in the harvester will enter the crushing component of the post-treatment device. The crushing component crushes the straw and then conveys it to the mixing component. Moreover, the decay accelerator storage component conveys the decay accelerator into the mixing component. The decay accelerator and the straw powder are fully mixed in the mixing component. The mixed straw mixture is conveyed to the discharging component. The main shaft of the soil covering component drives the soil turning member to rotate. During the rotation process, the soil turning member first passes through the soil turning position to turn up the soil, and then moves to the material laying position. The discharging component lays the straw mixture on the soil through the discharging port. When the soil turning member re-discharges the soil onto the ground, the straw mixture on the surface will be covered with soil. Therefore, through the synergistic effect of mechanical crushing, chemical decay acceleration, and soil covering, this post-treatment device effectively solves the problems of high pollution degree and low decay efficiency of traditional straw treatment methods.

[0051] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail with reference to the accompanying drawings.

[0052] As Figure 1 shown, an embodiment of the present invention discloses a straw post-treatment device 10 for a harvester. This straw post-treatment structure is provided at the rear end of the harvester and is connected to the straw conveying channel in the harvester.

[0053] Among them, the straw post-treatment device 10 includes a frame 100, as well as a crushing component 200, a decay accelerator storage component 300, a mixing component 400, a discharging component 500, and a soil covering component 600 provided on the frame 100. The frame 100 is connected to the harvester. The crushing component 200 is located above the frame 100. The inlet 201 of the crushing component 200 is connected to the straw conveying channel. The outlet 202 of the crushing component 200 is connected to the main inlet 401 of the mixing component 400. The mixing component 400 is also provided with a secondary inlet 402 connected to the decay accelerator storage component 300. The discharging port 403 of the mixing component 400 is connected to the inlet 501 of the discharging component 500. The discharging component 500 has a discharging port 502. It should be understood that in Figure 1 this case, since the pipeline connecting the outlet 202 of the crushing component 200 and the main inlet 401 of the mixing component 400 is relatively short, it is marked in one place.

[0054] In this embodiment, the frame 100 serves as the main body of the post-treatment device 10. On the one hand, it is used to install multiple working components, and on the other hand, it is used to connect to the harvester. Therefore, the frame 100 has multiple connection ends 110 and multiple bearing parts. The multiple bearing parts are respectively used for assembling the crushing component 200, the decay accelerator storage component 300, the mixing component 400, the discharging component 500, and the soil covering component 600. The multiple connection ends 110 are used to connect to the harvester, such as Figure 1 shown, the frame 100 is formed by splicing multiple rods. The multiple rods can be connected by welding, screwing, or clamping. The frame 100 has three connection ends 110 in the vertical direction, all of which are used to connect to the harvester. Since the cultivated land is uneven, the harvester will generate a large amplitude of vibration during travel. In order to reduce the vibration on the harvester from being transmitted to the post-treatment device 10, a shock-absorbing element 111 (helical spring) is sleeved on each connection end 110 of the frame 100.

[0055] Moreover, the soil covering component 600 includes a main shaft 610 rotatably installed on the lower side of the frame 100 (refer to Figure 5 ), and a plurality of soil turning members 620 arranged at intervals along the circumference of the main shaft 610. The axis direction of the main shaft 610 is perpendicular to the travel direction of the harvester. The main shaft 610 drives the plurality of soil turning members 620 to rotate around its axis direction. The plurality of soil turning members 620 sequentially pass through the soil turning position located below the main shaft 610 and the paving position corresponding to the discharge port 502 of the discharging component 500.

[0056] Such as Figure 2As shown, when the straw post-processing device 10 is in use, it is connected to the rear end of the harvester through the frame 100. During the operation, the harvester will harvest the crops along the way and separate the grains from the straw through the sorting device. The separated straw is output from the straw conveying channel to the straw post-processing device 10. First, the straw will be crushed by the crushing component 200, so that the straw is fragmented to facilitate subsequent transmission and decomposition; further, the crushed straw will enter the mixing component 400, and the catalyst storage component 300 will transport the catalyst into the mixing component 400, and the catalyst and the straw fragments will be fully mixed in the mixing component 400, so that the catalyst is fully mixed in the straw powder, which can evenly catalyze the straw decomposition and improve the straw decomposition efficiency; further, after mixing The straw mixture is conveyed to the discharge component 500, and the main shaft 610 of the soil covering component 600 is linked to the soil turning piece 620 to rotate. During the rotation, the soil turning piece 620 first passes through the soil turning position to turn up the soil, and then moves to the spreading position. The discharge component 500 spreads the straw mixture in the soil through the discharge port 502, and when the soil turning piece 620 discharges the soil back into the ground, the straw mixture on the surface will be covered with soil. On the one hand, the straw mixture buried in the soil is not easily blown away by the wind, which avoids environmental pollution and ensures that the straw mixture can remain in the soil to improve the soil quality; on the other hand, the straw mixture is buried in the soil, and the straw mixture can fully react with the microorganisms in the soil, which is more conducive to deterioration and facilitates subsequent farming to be carried out faster.

[0057] In the following, according to the processing sequence of the straw entering the post-processing device 10, the crushing component 200 will be described first.

[0058] The crushing part 200 is used to break up the straw to facilitate subsequent transportation and decomposition. Figure 3 As shown, in one embodiment, the crushing component 200 includes a second shell 210 that surrounds a crushing cavity, and two augers 220 are arranged between the inlet 201 and the outlet 202 in the second shell 210, and the two augers 220 are driven by the crushing drive to rotate toward each other. The crushing drive can be a driving motor commonly used in the art, and the crushing drive drives one of the augers 220 and is connected to the other augers 220 through a steering gear, so that the two augers 220 rotate toward each other.

[0059] The straw enters the second shell 210 from the inlet 201 and is crushed after passing through two augers 220 . The crushed straw is discharged from the outlet 202 and enters the mixing component 400 .

[0060] It should be noted that, in order to facilitate the straw to enter the second shell 210 from the entrance 201 of the second shell 210 , a funnel-shaped guiding structure is provided at the entrance 201 of the second shell 210 .

[0061] Of course, regarding the specific structure of the crushing component 200, this embodiment does not make a unique limitation thereon. For example, in the second housing 210, three or four augers 220 may be provided, and the crushed straw will be discharged from between two adjacent augers 220. Or, in another alternative embodiment, a rotating shaft is rotatably installed in the second housing 210. The rotating shaft is in transmission connection with the crushing driving member, and a plurality of hammer blades are evenly distributed on the rotating shaft. The hammer blades may be in the shape of a rectangle, a trapezoid, etc., and are fixed to the rotor by means of bolts or welding. A screen is provided at the outlet 202 of the second housing 210 for controlling the particle size of the crushed straw. The aperture of the screen can be selected and replaced according to actual needs.

[0062] After the straw enters the crushing cavity from the inlet 201, it is gradually crushed under the impact, shearing, and friction of the high-speed rotating hammer blades. The crushed straw is discharged from the outlet 202 through the screen, and the straw that does not reach the required particle size continues to be crushed in the crushing cavity until it passes through the screen.

[0063] Therefore, regarding the crushing component 200 for crushing straw, those skilled in the art can design it according to the actual situation and specific requirements, and this embodiment does not make a unique limitation thereon.

[0064] Next, the structure of the mixing component 400 will be described.

[0065] The mixing component 400 is used to mix straw and a decay accelerator to accelerate the decay rate of the straw. As Figure 4 shown, in one embodiment, the mixing component 400 includes a third housing 410 that encloses to form a mixing cavity. An auger 420 is provided in the third housing 410. The auger 420 is driven to rotate by a mixing driving member. The main inlet 401 and the secondary inlet 402 are located on one side of the auger 420, and the discharge port 403 is located on the other side of the auger 420. In this embodiment, the main inlet 401 and the secondary inlet 402 are located above the auger 420, and the discharge port 403 is located below the auger 420. Regarding the mixing driving member in the mixing component 400, it may be a commonly used driving motor in the art. It should be understood that the structure of the auger 420 is similar to that of the auger 220, and the two are only different in use. Figure 4 The auger 420 shown in Figure 3 is a perspective view along the axial side, and the two augers 220 shown in

[0066] are perspective views along the axial direction.

[0067] It should be noted that the decay accelerator storage component 300 is used to store the decay accelerator (usually a preparation combining chemistry and biotechnology, containing components such as ferrous chloride, magnesium phosphate, and potassium nitrate. These components can meet the nutritional requirements of beneficial microorganisms and accelerate the decomposition of straw). It is connected to the secondary inlet 402 on the third housing 410 and can transport the decay accelerator into the third housing 410. The mass of the decay accelerator transported by the decay accelerator storage component 300 to the third housing 410 is in a certain proportion to the mass of the straw transported by the crushing component 200 to the third housing 410. Specifically, valves are provided on the pipeline for the crushing component 200 to transport straw to the main inlet 401 and on the pipeline for the decay accelerator storage component 300 to transport the decay accelerator to the secondary inlet 402. By adjusting the opening degrees of the two valves, the straw and the decay accelerator can be transported to the mixing component 400 in proportion. Regarding the specific proportion between the straw and the decay accelerator, it can be designed according to the specific types of straw and the decay accelerator. This embodiment does not make specific limitations in this regard.

[0068] Of course, regarding the specific structure of the mixing component 400, in another alternative embodiment, for example, in the third housing 410, two or three augers 420 can be provided. The crushed straw and the decay accelerator will be mixed evenly under the agitation of the augers 420 and then discharged from the discharge port 502. Or, in another alternative embodiment, a rotatable rotating shaft is provided in the third housing 410. The rotating shaft is in transmission connection with the mixing driving member, and a set of blades is provided on the rotating shaft. The set of blades can be composed of multiple blades with different shapes and sizes, such as flat blades and folded blades.

[0069] When the straw and the decay accelerator enter the housing, the blades rotate at high speed driven by the shaft, generating strong shearing, agitation, and mixing effects on the materials. Different types of blades can generate different flow patterns. For example, flat blades mainly generate axial flow, while folded blades can generate more complex flow, thus better mixing the materials.

[0070] Therefore, regarding the mixing component 400 for mixing the straw and the decay accelerator evenly, those skilled in the art can design it according to the actual situation and specific requirements. This embodiment does not make a unique limitation in this regard.

[0071] Next, the structure of the discharging component 500 will be described.

[0072] Such as Figure 5 and Figure 6As shown, in one embodiment, the discharging component 500 includes a cylindrical first housing 510, a rotatable eccentric shaft 520 disposed within the first housing 510, and a plurality of swing walls 530. The axial direction of the first housing 510 is parallel to the axial direction of the main shaft 610. A plurality of soil-turning members 620 are disposed around the outer periphery of the first housing 510. The main shaft 610 is located on one side of the first housing 510 in the axial direction and is connected to the plurality of soil-turning members 620 through a connecting member 624.

[0073] Annular sliding rails 511 are formed on the inner wall surfaces at both axial ends of the first housing 510. The axis line of the eccentric shaft 520 is offset from the axis line of the first housing 510. The eccentric shaft 520 and the main shaft 610 are drivingly connected with a predetermined transmission ratio.

[0074] One end of any one of the plurality of swing walls 530 is hinged to the outer surface of the eccentric shaft 520, and the other end is hinged to the sliding rail 511 on the first housing 510.

[0075] When the eccentric shaft 520 rotates and drives the plurality of swing walls 530 to rotate, the volume of the storage cavity formed by enclosing any two adjacent swing walls 530 and the wall surface of the first housing 510 changes. The feeding port 501 (see Figure 1 ) is opened at one end of the first housing 510 facing away from the main shaft 610, corresponding to the position where the volume of the storage cavity is the largest. The discharging port 502 (see Figure 6 ) is opened on the side wall of the first housing 510, corresponding to the position where the volume of the storage cavity is the smallest.

[0076] In this embodiment, through the rotation of the eccentric shaft 520, the discharging component 500 drives the plurality of swing walls 530 to rotate within the first housing 510, causing the volume of the storage cavity formed by adjacent swing walls 530 and the wall surface of the first housing 510 to change periodically. When the volume of the storage cavity is the largest, the straw mixture is sucked in from the feeding port 501; when the volume is the smallest, the material is discharged from the discharging port 502, realizing continuous and stable material conveying and discharging, and avoiding the possible blockage or intermittent discharging problems of the traditional discharging component 500.

[0077] Moreover, the discharging port 502 is opened on the side wall of the first housing 510, corresponding to the position where the volume of the storage cavity is the smallest. The material is forced to be discharged at the minimum volume position, ensuring that the discharging direction is accurately matched with the movement track of the soil covering component 600, so that the straw mixture accurately falls into the soil turned up by the soil-turning members 620, improving the soil covering and burying effect. It should be noted that the shape of the swing wall 530 can be arc-shaped, so as to fit on the inner wall of the first housing 510 during rotation, thereby fully sweeping the straw mixture out of the first housing 510.

[0078] In addition, the first housing 510 of the discharging component 500 is cleverly arranged inside a plurality of soil-turning components 620, without occupying additional space, making the structure of the post-treatment device 10 compact.

[0079] Therefore, through the combined design of the eccentric shaft 520 and the swing wall 530, the discharging component 500 of the post-treatment device 10 realizes the efficient, stable transportation and precise discharge of the straw mixture, optimizes the spatial coordination between the discharging component 500 and the soil-covering component 600, has the characteristics of a compact structure, strong adaptability, and convenient maintenance, and improves the overall performance and reliability of the post-treatment device 10.

[0080] Specifically, in one embodiment, three swing walls 530 are arranged inside the first housing 510. Among the three swing walls 530, the positions where adjacent two swing walls 530 are hinged to the eccentric shaft 520 are spaced 120°.

[0081] Four soil-turning components 620 are arranged at intervals on the outer periphery of the first housing 510, and the interval between adjacent two soil-turning components 620 is 90°.

[0082] Furthermore, to ensure that when the soil-turning component 620 moves to the material-laying position, the swing wall 530 can sweep out the straw mixture, one end of the main shaft 610 close to the first housing 510 is meshed with the eccentric shaft 520 through a gear set, and the predetermined transmission ratio of the main shaft 610 and the eccentric shaft 520 is 3:4. Of course, one end of the main shaft 610 close to the first housing 510 and the eccentric shaft 520 can also be driven by a belt or a chain, and this embodiment does not make a unique limitation in this regard.

[0083] Of course, regarding the quantity design of the soil-turning components 620 of the soil-covering component 600 and the swing walls 530 of the discharging component 500, this embodiment also does not make a unique limitation, and those skilled in the art can design according to the actual situation and specific requirements.

[0084] Furthermore, regarding the structure of the discharging component 500, in another alternative embodiment, the discharging component 500 is arranged above the soil-covering component 600, and the discharging component 500 has a discharging port 502 that opens downward. When any one of the soil-turning components passes below the discharging port 502, the discharging port 502 sprays the straw mixture towards the downward soil-turning component 620. Therefore, regarding the discharging component 500 for laying the straw mixture on the soil-turning component 620, those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make a unique limitation in this regard.

[0085] The following describes other structures of the soil-covering component 600, such as Figure 7 and Figure 8 As shown, the connecting member 624 is set as a circular cover plate, the circular cover plate is attached to one end of the first housing 510 along the axial direction, and is fixedly connected to the main shaft 610.

[0086] Moreover, the soil-turning member 620 includes a mounting plate extending along the axial direction of the first housing 510 and fitting on the side wall of the first housing 510, and a support plate 621 and a bottom plate 622 provided on the mounting plate. One end of the support plate 621 is connected to the mounting plate and extends in a direction away from the first housing 510. The other end of the support plate 621 is connected to the bottom plate 622, and a soil-turning portion 623 is formed by enclosing between the bottom plate 622 and the support plate 621.

[0087] Wherein, the main shaft 610 rotates and drives the free end of the bottom plate 622 of the soil-turning member 620 to move towards the ground, and a part of the bottom plate 622 is inserted into the soil and shovels the soil into the soil-turning portion 623.

[0088] It should be noted that the circular cover plate and the feeding port 501 are respectively arranged at two ends of the first housing 510 to prevent interference between the connecting parts between the plurality of soil-turning members 620 and the pipeline connecting the discharge port 502 and the mixing member 400 when the plurality of soil-turning members 620 rotate.

[0089] More specifically, in one embodiment, as Figure 7 shown, the surface of the bottom plate 622 close to the first housing 510 is recessed on the side away from the first housing 510, so as to ensure that the soil-turning portion 623 can shovel up more soil and can sufficiently bury the straw mixture subsequently.

[0090] Furthermore, the edge of the bottom plate 622 facing away from the support plate 621 is provided with a plurality of tooth-shaped structures arranged at intervals along the axial direction of the first housing 510, so as to reduce the resistance when the soil-turning member 620 shovels the soil, thereby facilitating the soil-turning member 620 to shovel up the soil.

[0091] Of course, regarding the specific structure of the soil-turning member 620, this embodiment does not make a unique limitation, and the soil-turning member 620 can also be set as a plow for soil turning in the art.

[0092] Furthermore, as Figure 9 shown, the embodiment of the present invention also discloses a straw post-treatment device 10 for a harvester. The straw post-treatment device 10 further includes a dust-proof cover 700. The dust-proof cover 700 is arranged on the frame 100 and covers the side of the first housing 510 facing away from the frame 100.

[0093] Wherein, a fan-shaped channel is formed between the dust-proof cover 700 and the first housing 510, and the main shaft 610 rotates and drives a plurality of soil-turning members 620 to sequentially pass through the fan-shaped channel.

[0094] In this embodiment, the dust cover 700 completely covers the side of the first housing 510 facing away from the frame 100, forming a semi-closed space, blocking the outward diffusion of the dust generated during the discharging process of the straw mixture, effectively reducing the impact of straw dust on the health of the operator, and reducing the pollution to the surrounding environment of the harvester. Moreover, the fan-shaped channel formed between the dust cover 700 and the first housing 510 can guide the air flow direction by reasonably designing the channel width and angle, avoiding the accumulation of dust inside the cover. Even under high-dust working conditions, it can ensure the smooth air flow in the channel, preventing the dust from flowing back into the harvester or overflowing into the environment.

[0095] Furthermore, in this embodiment, the straw post-treatment device 10 further includes a water spraying component 800. The water spraying component 800 is arranged at the upper end of the dust cover 700. The water spraying component 800 includes a plurality of nozzles arranged at intervals along the axis direction of the first housing 510. The plurality of nozzles are all connected to the water tank through pipelines, and a water pump is arranged on the pipeline. It should be noted that the nozzles can be arranged at intervals along the axis direction of the first housing 510 in two, three, four, seven or any other number. Those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations on this.

[0096] The main shaft 610 drives a plurality of soil-turning members 620 to rotate around its axis direction. The plurality of soil-turning members 620 sequentially pass through the soil-turning position, the material-paving position, and the water-spraying position corresponding to the water spraying component 800. The plurality of nozzles spray water on the straw mixture inside the soil-turning members 620.

[0097] In this embodiment, the water spraying component 800 sprays water precisely on the straw mixture inside the soil-turning members 620 through a plurality of nozzles arranged at intervals along the axis direction of the first housing 510, ensuring that the straw mixture obtains uniform moisture supplement during the soil-turning process, promoting the full contact of the accelerating agent with the straw and the soil, accelerating the straw decay process, and improving the soil fertility.

[0098] That is to say, the main shaft 610 of the soil-covering component 600 drives the soil-turning members 620 to sequentially pass through the soil-turning position, the material-paving position, and the water-spraying position, forming a continuous operation process of "soil-turning - material-paving - water-spraying". The soil-turning members 620 turn up the soil at the soil-turning position, evenly spread the straw mixture on the turned-up soil at the material-paving position, and spray water on the straw mixture by the nozzles at the water-spraying position, realizing the deep mixing of the straw and the soil, and optimizing the soil structure. Moreover, spraying water mist on the straw mixture moistens the surface of the straw, reduces the generation and diffusion of dust, effectively reduces the dust pollution during the straw treatment process, and improves the operation environment.

[0099] Furthermore, in order to prevent the problem of dust flying, in one embodiment, as Figure 9As shown, this straw post-treatment device 10 further includes a soil pressing component 900. The soil pressing component 900 is arranged at the lower end of the dust-proof cover 700. The soil pressing component 900 extends in the horizontal direction. And, in the vertical direction, the soil pressing component 900 is higher than the bottom plate 622 of the soil turning member 620 located at the soil turning position.

[0100] In this embodiment, the soil pressing component 900 is located at the lower end of the dust-proof cover 700 and is higher than the bottom plate 622 at the soil turning position. After the soil turning member 620 passes through the soil turning position and the material spreading position and re-spreads the soil and straw mixture onto the ground, the soil pressing component 900 presses the straw mixture into the deep layer of the soil by gravity or a slight downward pressure, so that it is in full contact with microorganisms and the soil environment, accelerating the decay and decomposition. And, the compacted soil reduces water evaporation and improves the water retention capacity of the soil. The straw mixture forms a stable organic matter layer in the moist soil, providing nutrients for the subsequent growth of crops.

[0101] It should be noted that, in addition to the embodiments of the present invention described in the above specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is introduced in conjunction with the preferred embodiments, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details are included in the above description. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0102] It should be noted that, in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0103] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0104] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0105] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0106] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A straw post-processing device for a harvester, characterized in that: The straw post-processing structure is arranged at the rear end of the harvester and connected to the straw conveying channel in the harvester; wherein, The straw post-processing device comprises a frame, and a crushing component, a catalytic agent storage component, a mixing component, a discharge component and a soil covering component arranged on the frame, the frame is connected to the harvester, the crushing component is located above the frame, and the inlet of the crushing component is connected to the straw conveying channel, the outlet of the crushing component is connected to the main inlet of the mixing component, the mixing component is also provided with a secondary inlet connected to the catalytic agent storage component, the discharge port of the mixing component is connected to the feed port of the discharge component, and the discharge component has a discharge port; and, The soil covering component includes a main shaft rotatably mounted on the lower side of the frame, and a plurality of soil turning pieces arranged at intervals along the circumference of the main shaft, the axial direction of the main shaft is perpendicular to the travel direction of the harvester, the main shaft links the plurality of soil turning pieces to rotate around its axial direction, and the plurality of soil turning pieces sequentially pass through the soil turning position located below the main shaft and the material spreading position corresponding to the material discharge port of the material discharge component; wherein, The straw post-processing device moves with the harvester, the crops are harvested and enter the harvester, and the crops are separated into grains and straw, the straw is input into the crushing component from the straw conveying channel, the crushed straw in the crushing component is conveyed from the main entrance to the mixing component, and the accelerator storage component conveys the accelerator from the secondary entrance to the mixing component, the straw and the accelerator are evenly mixed in the mixing component to form a straw mixture, the straw mixture is conveyed to the discharging component, the main shaft links the multiple soil-turning parts to rotate around its axial direction, any of the soil-turning parts passes through the soil-turning position and turns up the soil on the ground, and then passes through the paving position, the discharge port of the discharge component discharges the straw mixture into the soil in the soil-turning parts, the soil-turning parts continue to rotate to discharge the straw mixture and soil back into the ground, and the straw mixture is buried in the soil.

2. The straw post-processing device for a harvester according to claim 1, characterized in that: The discharge component comprises a cylindrical first shell, an eccentric shaft and a plurality of swing walls rotatably arranged in the first shell, the axial direction of the first shell is parallel to the axial direction of the main shaft, the plurality of soil-turning pieces are arranged around the outer periphery of the first shell, the main shaft is located at one side of the first shell along the axial direction and is connected to the plurality of soil-turning pieces through a connecting piece; The first housing forms annular slide rails on the inner wall surfaces at both ends of the axial direction, the axis of the eccentric shaft is staggered with the axis of the first housing, and the eccentric shaft is connected to the main shaft with a predetermined transmission ratio; wherein, One end of any one of the plurality of swing walls is hinged to the outer surface of the eccentric shaft, and the other end is hinged to the slide rail on the first housing; The eccentric shaft rotates and links the multiple swing walls to rotate, and the volume of the material storage cavity formed by any two adjacent swing walls and the wall surface of the first shell changes. The feed inlet is opened at the end of the first shell away from the main axis, and is formed to form the corresponding position with the largest volume of the material storage cavity. The discharge port is opened on the side wall of the first shell, and is formed to form the corresponding position with the smallest volume of the material storage cavity.

3. The straw post-processing device for a harvester as claimed in claim 2, characterized in that: The plurality of swing walls include three swing walls, and the positions where two adjacent swing walls are hinged to the eccentric shaft are spaced 120 degrees apart; The plurality of soil turning members include four soil turning members spaced apart along the outer circumference of the first shell, and the interval between two adjacent soil turning members is 90 degrees; One end of the main shaft close to the first housing is meshed with the eccentric shaft through a gear set, and the predetermined transmission ratio of the main shaft and the eccentric shaft is 3:

4.

4. The straw post-processing device for a harvester as claimed in claim 3, characterized in that: The connecting member is configured as a circular cover plate, which is attached to one end of the first housing along the axial direction and is fixedly connected to the main shaft; and, The soil-turning member includes a mounting plate extending along the axial direction of the first shell and attached to the side wall of the first shell, and a support plate and a bottom plate arranged on the mounting plate, one end of the support plate is connected to the mounting plate and extends in a direction away from the first shell, the other end of the support plate is connected to the bottom plate, and a soil-turning portion is formed between the bottom plate and the support plate; wherein, The main shaft rotates and links the free end of the bottom plate of the soil-turning member to move toward the ground, and a part of the bottom plate is inserted into the soil and shovels the soil into the soil-turning part.

5. The straw post-processing device for a harvester as claimed in claim 4, characterized in that: A side surface of the bottom plate close to the first shell is recessed along a side away from the first shell; and An edge of one side of the bottom plate away from the support plate is configured as: a plurality of tooth-like structures spaced apart along the axial direction of the first shell.

6. The straw post-processing device for a harvester as claimed in claim 4, characterized in that: The straw post-processing device further comprises a dust cover, which is arranged on the frame and is arranged on a side of the first shell away from the frame; wherein, A fan-shaped channel is formed between the dust cover and the first shell, and the main shaft rotates and links the multiple soil-turning members to pass through the fan-shaped channel in sequence.

7. The straw post-processing device for a harvester according to claim 6, characterized in that: The straw post-processing device further comprises a water spraying component, which is arranged at the upper end of the dust cover; wherein, The water spray component comprises a plurality of spray heads arranged at intervals along the axial direction of the first shell, the plurality of spray heads are connected to the water tank through pipelines, and a water pump is arranged on the pipelines; The main shaft links the multiple soil-turning pieces to rotate around its axial direction, and the multiple soil-turning pieces sequentially pass through the soil-turning position, the material-laying position and the water-spraying position corresponding to the water-spraying component, and the multiple nozzles spray water toward the straw mixture in the soil-turning pieces.

8. The straw post-processing device for a harvester as claimed in claim 6, characterized in that: The straw post-processing device further comprises a soil pressing component, which is arranged at the lower end of the dust cover; wherein, The soil pressing component extends in a horizontal direction, and in a vertical direction, the soil pressing component is higher than the bottom plate of the soil turning piece located at the soil turning position.

9. The straw post-processing device for a harvester according to any one of claims 1 to 8, characterized in that: The crushing component includes a second shell body that surrounds a crushing cavity, and two augers are arranged between the inlet and the outlet in the second shell body, and the two augers are driven by the crushing driving member to rotate toward each other; wherein, The straw enters the second shell from the inlet and is crushed after passing through the two augers. The crushed straw is discharged from the outlet.

10. The straw post-processing device for a harvester according to any one of claims 1 to 8, characterized in that: The mixing component includes a third shell that surrounds a mixing cavity, an augers are arranged in the third shell, and the augers are driven to rotate by a mixing drive member, the main inlet and the secondary inlet are located on one side of the augers, and the discharge port is located on the other side of the augers; wherein, The crushed straw in the crushing component enters the third shell from the main entrance, and the accelerator in the agent storage component enters the third shell from the secondary entrance. After being stirred by the auger, the straw mixture is discharged from the discharge port.

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