Rice and wheat straw field in-situ burning, returning and disinfecting all-in-one machine

Abstract

The invention discloses a rice and wheat straw field in-situ burning, returning and disinfecting all-in-one machine which is controlled by a control cabinet and comprises a straw picking and conveying system, a straw feeding system, a straw feeding system, a straw feeding system, a straw feeding system, a straw feeding system and a straw discharging system, wherein the straw picking and conveying system is used for picking up straws on the ground and conveying the straws into a straw high-efficiency layer burning system; the crawler-type multifunctional platform is used for bearing equipment to advance and providing power and control functions; the efficient straw grate-firing system is used for receiving the straw conveyed by the straw picking and conveying system and combusting the straw into straw ash to fall into a field, and flue gas generated by grate-firing is conveyed to the flue gas treatment system to be filtered and then discharged; the stubble in-situ burning and field-returning disinfection system can cut and crush stubbles, throw up the stubbles together with soil and then perform directional burning, uniformly mix burning residues and the soil and perform leveling and cooling treatment, and flue gas generated by burning is conveyed to the flue gas treatment system to be filtered and then discharged; and the flue gas treatment system is used for respectively treating the generated flue gas. According to the all-in-one machine, a straw field in-situ burning and returning disinfection operation mode is innovatively established, and a new path is provided for green and efficient utilization of straw resources.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, in particular to an integrated machine for in-situ burning and returning rice and wheat straw to the field and disinfecting the field. Background Art

[0002] Currently, straw is primarily utilized as fertilizer, raw material, energy, feed, and base material, with returning it to the field as fertilizer being the primary method. Long-term, large-scale straw return to the field can easily lead to an imbalance in the soil's carbon-nitrogen ratio, intensifying microbial activity and competing with crops for nitrogen, resulting in reduced crop yields. Furthermore, the presence of insect eggs overwintering within straw and residual grass seeds can further exacerbate pest and disease problems. Besides returning straw to the field, off-field utilization is also a major method of utilizing straw in my country. However, due to its low density (0.1-0.3 tons / cubic meter) and dispersed distribution, straw requires multiple steps such as baling and transportation before it leaves the field, resulting in high off-field costs. This results in low overall utilization efficiency and limits downstream applications.

[0003] In response to the current severe problems facing straw, straw management has shifted from a "whole-area burning ban" to "precise control". In restricted burning areas, straw burning can be flexibly adjusted according to meteorological conditions and air quality conditions, and precise control must be achieved. Although on-site straw burning can quickly clean up the fields, the high temperature generated by burning can kill pests and diseases and weed seeds carried in the straw, reducing the pressure of field management, and the ash after burning is rich in potassium, which can improve soil fertility. However, due to the large quantity and wide distribution of straw, even in good weather conditions, open-air burning will still emit a large amount of smoke into the atmosphere. The main pollutants in the smoke are particulate matter and gaseous pollutants (such as PM 2.5 、NO x etc.), will aggravate haze and threaten human respiratory health and ecological safety, and have a significant impact on the entire ecological environment. In-furnace burning can limit straw burning and pollution emissions to a limited space, which is more conducive to reducing its pollutant emissions; however, there are also problems such as large machine size and weight, and limited application in the field. Therefore, in order to balance agricultural production needs and environmental protection goals, it is crucial to develop field rapid incineration equipment that can control burning conditions and centrally treat pollutants. By limiting the burning space and optimizing emission management, the agronomic value of straw burning can be retained, and the risk of environmental pollution can be significantly reduced, providing a new path for the green and efficient use of straw resources.

[0004] In-situ rice and wheat straw incineration and disinfection in the field is an innovative method with significant advantages, primarily in terms of efficient straw treatment, pest and weed control, soil fertility improvement, and environmental protection and energy conservation. Currently, straw treatment typically involves returning the entire crop to the field or using centralized transport and fixed incinerators. Returning the entire crop to the field disrupts the soil's microbial balance and requires multiple steps like baling and transporting the crop before it leaves the field, resulting in high costs. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the prior art and provide an integrated machine for on-site burning and returning rice and wheat straw to the field for disinfection. The integrated machine can aim to solve the prominent problems existing in the field treatment of rice and wheat straw, such as serious air pollution, high cost of centralized burning off-field, and the impact of returning all the straw to the field on the next crop and aggravation of pests and diseases. It can realize the functions of smokeless and controllable burning of stubble and surface straw, inactivation of pests and diseases, collection and treatment of incineration smoke, burying and returning burnt straw and embers to the field, and soil disinfection.

[0006] The purpose of the present invention is to be solved by the following technical solutions: An integrated machine for in-situ burning and disinfection of rice and wheat straw in the field, characterized in that the integrated machine comprises: The straw picking and conveying system is installed in front of the crawler-type multi-functional platform that provides power output. It is used to pick up the straw on the ground and convey it to the straw high-efficiency stratum combustion system. The crawler-type multifunctional platform is used to carry and drive the straw picking and conveying system, the straw efficient stratification system, the stubble in-situ burning and disinfection system, and the flue gas treatment system, and provides power and control functions for the all-in-one machine; The high-efficiency straw layer combustion system is installed on the top of the crawler-type multi-functional platform. It is used to receive the straw delivered by the straw picking and conveying system and burn it into straw ash, which falls into the fields. The flue gas generated by the layer combustion is transported to the flue gas treatment system for filtration and discharge. The stubble in-situ burning and field disinfection system is installed directly behind the crawler-type multi-functional platform that provides power output. It is used to cut and crush the stubble and throw it together with the soil for directional burning, evenly mix the burning residue with the soil, and level and cool it. The smoke generated by the burning is transported to the smoke treatment system for filtration and discharge. The flue gas treatment system is installed on the top of the crawler multifunctional platform and is used to treat the flue gas generated by layer burning, and is installed on the top of the root stubble in-situ burning and field disinfection system and is used to treat the flue gas generated by burning.

[0007] The straw picking and conveying system includes a spring-toothed roller, a guide grid, an auger and a straw picking and conveying mechanism. The spring-toothed roller can rotate to pick up the straw on the ground. The guide grid is used to assist the spring-toothed roller in picking up the straw and prevent the spring teeth from picking up the straw and guiding the straw picked up by the spring teeth of the spring-toothed roller to the area where the auger is located. The auger gathers the scattered straw to the bottom of the straw picking and conveying mechanism through its own rotation. The straw picking and conveying mechanism picks up the straw and conveys it to the top of the layer burning conveying structure of the straw high-efficiency layer burning system and drops it onto the layer burning conveying structure; the conveying end of the straw picking and conveying mechanism should be 20-50 cm higher than the conveying front end of the layer burning conveying structure.

[0008] The straw picking and conveying system includes a picking system suspension bracket, a picking mechanism body, an auger, a guide grid, a spring-tooth roller, a transmission shaft, a chain connecting rod, a tooth connecting rod and a straw conveying chain. The straw picking and conveying system is installed on the rear suspension mechanism of the crawler-type multi-functional platform through the picking system suspension bracket. An auger and a spring-tooth roller that require power from the crawler-type multi-functional platform are arranged on the picking mechanism body. The spring-tooth roller is located in front of the auger and the front and top of the spring-tooth roller are covered with a guide grid extending toward the auger. The transmission shaft is used to receive the power transmitted forward by the power output mechanism on the crawler-type multi-functional platform. The transmission shaft is provided with a transmission mechanism for connecting the straw conveying chain in the straw picking and conveying mechanism. The sprocket is equipped with an auger sprocket connected to the auger, the drive shaft transmits power to the auger through the chain connected to the auger sprocket, the auger transmits power to the spring-tooth roller through the transmission chain, and the power transmitted forward by the power output mechanism on the crawler-type multi-functional platform can simultaneously drive the straw picking and conveying mechanism, the auger, and the spring-tooth roller to work; the chain connecting rod and the tooth connecting rod arranged at intervals on the straw conveying chain together with the straw conveying chain constitute a straw picking and conveying mechanism, the lower end of the straw picking and conveying mechanism is used to connect the output area of the auger, and the upper end is used to connect the layer burning conveying mechanism of the straw high-efficiency layer burning system, the chain connecting rod undertakes the straw during the straw transportation process, and the tooth connecting rod is used to grab the straw and drive the straw to move.

[0009] The crawler-type multifunctional platform is driven by hybrid power, and can provide power for the crawler walking system, straw picking and conveying system, straw efficient layer combustion system and root stubble in situ burning and returning to the field disinfection system, and can power the air supply fan in the straw efficient layer combustion system, the water pump and the flue gas treatment system in the root stubble in situ burning and returning to the field disinfection system; the crawler-type multifunctional platform can control itself as well as the straw picking and conveying system, the straw efficient layer combustion system, the root stubble in situ burning and returning to the field disinfection system, and the flue gas treatment system.

[0010] The crawler-type multifunctional platform includes a platform frame, a power output shaft, a rear suspension mechanism, a control cabinet, a crawler travel system, a front suspension mechanism and a body shell. The platform frame can carry heavy equipment in the straw efficient layer combustion system, the flue gas treatment system and the root stubble burning and returning to the field disinfection system; the power output shaft provides power for the reducer of the root stubble burning and returning to the field disinfection system; the rear suspension mechanism is used to suspend and control the posture of the root stubble burning and returning to the field disinfection system, and to lift or lower the root stubble burning and returning to the field disinfection system at the rear; the control cabinet can control the entire all-in-one machine and a remote control module is configured in the control cabinet, which can remotely control the all-in-one machine through the control cabinet; the crawler-type multifunctional platform adopts a crawler travel system for support and travel; the front suspension mechanism is used to connect and fix the straw picking and conveying system; the body shell is used to protect the sensitive devices in the all-in-one machine; the crawler-type multifunctional platform also includes a power output mechanism that can provide transmission power for the straw picking and conveying system and the straw efficient layer combustion system at the same time.

[0011] The described straw high-efficiency layer combustion system includes a gas tank, a layer combustion conveying mechanism, a layer combustion cavity shell, a multi-stage layer combustion device and a layer combustion smoke exhaust pipe. The layer combustion conveying mechanism with the front end extending out of the layer combustion cavity shell is used to receive the straw transported by the straw picking and conveying system and transport it into the layer combustion cavity shell. The gas tanks placed on the platform frame of the crawler-type multi-functional platform provide gas for the high-temperature flame nozzles in the multi-stage layer combustion device and the root stubble burning nozzles in the root stubble in-situ burning and field disinfection system respectively. The multi-stage layer combustion device provides high-temperature flame to quickly burn the straw, and the generated smoke is discharged to the smoke treatment system for treatment through the layer combustion smoke exhaust pipe.

[0012] The straw high-efficiency layer combustion system includes a gas tank, a chain transmission shaft, a high-temperature resistant connecting rod, a high-temperature resistant gear connecting rod, an air supply fan, a layer combustion cavity shell, a multi-stage layer combustion device and a layer combustion smoke exhaust pipe. The gas tank is placed on the platform frame and is connected to the high-temperature flame nozzle in the multi-stage layer combustion device and the root stubble burning nozzle in the root stubble in-situ burning and field disinfection system through a gas pipeline with a valve. The layer combustion cavity shell is located on the platform frame. The layer combustion conveying mechanism with one end extending out of the layer combustion cavity shell is composed of two chain transmission shafts matching the layer combustion conveying chain, a high-temperature resistant connecting rod, and a high-temperature resistant gear connecting rod. The protruding end of the layer combustion conveying mechanism is located at the straw picking conveyor. The output end of the structure is directly below and one of the chain drive shafts is used to receive the power transmitted upward by the power output mechanism on the crawler-type multi-functional platform. The high-temperature resistant connecting rod and the high-temperature resistant tooth connecting rod are arranged at intervals on the layer combustion conveying chain between the two chain drive shafts. The high-temperature resistant connecting rod is used to receive unburned straw, the high-temperature resistant tooth connecting rod is used to grab the straw transported by the straw picking and conveying system to the burning area, and the straw on the high-temperature resistant tooth connecting rod moves along the conveying direction of the layer combustion conveying chain; the top of the layer combustion cavity shell is provided with a multi-stage layer combustion device, an air supply fan is provided on one side, a smoke exhaust outlet is provided on the opposite side of the air supply fan, and the smoke exhaust outlet and the air supply fan are arranged at intervals.

[0013] The power output mechanism on the crawler-type multifunctional platform is used for simultaneously driving the straw picking and conveying system and the straw efficient layer combustion system. Specifically, the power output mechanism drives the chain through the sprocket to transmit power to the transmission shaft in the straw picking and conveying system. The transmission shaft distributes the power of the crawler-type multifunctional platform to the connection between the straw conveying chain and the auger, that is, the transmission shaft drives the straw conveying chain and the auger to work at the same time, and the auger transmits power to the spring-tooth roller through the chain; the power output mechanism drives the chain through the sprocket to transmit power to one of the chain drive shafts in the straw efficient layer combustion system, and the two chain drive shafts are connected by the layer combustion conveying chain.

[0014] The on-site stubble burning and field disinfection system includes a stubble killing knife roller, a stubble burning nozzle, a smoke collecting cover, a rotary tillage knife roller, a rotary tillage drag plate, and a spraying device. The high-speed rotating stubble killing blades on the stubble killing knife roller cut and crush the soil together with the stubble and throw it to the bottom of the stubble burning nozzle. The high-temperature flame released by the stubble burning nozzle burns the stubble on the soil surface into ashes that fall into the field. The smoke collecting cover plate is used to centrally collect and guide the smoke generated during the burning process into the smoke treatment system. The rotary tillage knife on the rotary tillage knife roller rotates to evenly mix the burning residue with the soil. The rotary tillage drag plate is used to level the soil mixed with the burning residue. The spraying device cools the soil after straw stubble killing, shallow rotary throwing, directional burning, soil disinfection, smoke collection and burying and returning to the field.

[0015] The stubble in-situ burning and returning to the field disinfection system includes a returning to the field system suspension bracket, a stubble killing knife roller, a stubble burning nozzle, a returning to the field system structure frame, a smoke collecting cover, a transmission chain, a rotary tillage knife roller, a side transmission shaft, a rotary tillage drag plate, a spray device, a reducer, a power transmission shaft, a water pump, a water tank and a burning smoke exhaust pipe. The in-situ burning and returning to the field disinfection system is installed on the rear suspension mechanism of the crawler-type multifunctional platform through the returning to the field system suspension bracket. The stubble killing knife roller with a stubble killing knife, the stubble burning nozzle, the smoke collecting cover, the rotary tillage knife roller with a rotary tillage knife, and the rotary tillage drag plate are arranged from front to back in accordance with the present invention. The nozzles are connected to the gas tank through a gas pipeline with a valve. The part of the smoke collecting cover plate adjacent to the nozzles is lower than the part adjacent to the rotary tillage roller, and the smoke collecting cover plate is connected to the flue gas treatment system through the incineration smoke exhaust pipe. The spray device above the rotary tillage drag plate is connected to the water pump and water tank on the platform frame in sequence through a water pipe. The reducer is connected to the power output shaft through the power transmission shaft and the reducer can distribute power to the rotary tillage roller and the side transmission shaft. The side transmission shaft transmits power to the stubble killing roller in front through a transmission chain.

[0016] The flue gas treatment system includes a flue gas filter box composed of a flow guide cover, a metal mesh filter layer, an electrostatic filter grid, a ceramic filter layer and an axial flow fan. The flow guide cover is arranged at the inlet of the flue gas filter box, and the metal mesh filter layer, the electrostatic filter grid and the ceramic filter layer are arranged in sequence in the inner cavity of the flue gas filter box, and the axial flow fan is arranged at the outlet of the flue gas filter box; the flow guide cover guides the flue gas to pass evenly through the metal mesh filter layer, and the metal mesh filter layer is used to remove large particles of dust generated during the incineration process; the electrostatic filter grid is used to absorb small particles of dust in the flue gas; the filter element material of the ceramic filter layer can react with the components in the flue gas; the axial flow fan can form a negative pressure environment in the flue gas filter box.

[0017] The present invention has the following advantages over the prior art: The all-in-one machine provided by the present invention can aim to solve the prominent problems existing in the field treatment of rice and wheat straw, such as serious air pollution, high cost of centralized burning off-field, and the impact of full return of straw to the field on the next crop and aggravation of pests and diseases. It can realize the functions of smokeless and controlled burning of stubble and surface straw, inactivation of pests and diseases, collection and treatment of incineration smoke, burial and return of burnt straw and embers to the field, and soil disinfection. The all-in-one machine is used for rapid burning and return of straw to the field for disinfection after crop harvest in agricultural production. The working process is environmentally friendly and clean, and the machine equipment can operate stably for a long time. By optimizing the work process of field treatment of rice and wheat straw, efficient and environmentally friendly technology and equipment support are provided to promote the sustainable development of agricultural production and the resource utilization of rice and wheat straw.

[0018] The all-in-one machine provided by the present invention can effectively meet the current processing requirements of different straw characteristics and feed amounts, construct key component systems such as straw picking and conveying system, high-efficiency layer combustion system, flue gas treatment system and root stubble on-site burning and returning to the field disinfection system, and clarify the influence of key parameters and material parameters on the burning effect, forming a straw field on-site burning and returning to the field disinfection operation mode that can be targeted at different raw material characteristics, and innovatively establishing a straw field on-site burning and returning to the field disinfection operation mode, which can not only retain the agronomic value of straw burning, but also significantly reduce the risk of environmental pollution, realize the research and development and promotion of straw field on-site burning and returning to the field disinfection operation equipment, and provide a new path for the green and efficient utilization of straw resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attachment Figure 1 This is a schematic diagram of the structure of the rice and wheat straw field in-situ burning and disinfection integrated machine provided by the present invention; Attachment Figure 2 This is a structural diagram of the straw picking and conveying system provided by the present invention; Attachment Figure 3 This is a structural diagram of the straw picking and conveying system provided by the present invention installed on a crawler-type multifunctional platform; Attachment Figure 4 A schematic structural diagram of the crawler-type multifunctional platform provided by the present invention; Attachment Figure 5 This is a schematic structural diagram of the straw high-efficiency stratum combustion system provided by the present invention; Attachment Figure 6 This is a structural diagram of the straw high-efficiency stratum combustion system provided by the present invention installed on a crawler-type multifunctional platform; Attachment Figure 7 This is a schematic diagram of the structure of the on-site stubble burning and field disinfection system provided by the present invention; Attachment Figure 8 This is a schematic structural diagram of the stubble in-situ burning and field disinfection system provided by the present invention installed on a crawler-type multifunctional platform; Attachment Figure 9 This is a structural schematic diagram of the flue gas treatment system provided by the present invention.

[0020] Among them: 1 - straw picking and conveying system; 101 - picking system suspension bracket; 102 - picking mechanism body; 103 - auger; 104 - guide grid; 105 - spring-tooth roller; 106 - transmission shaft; 107 - chain connecting rod; 108 - gear connecting rod; 109 - conveyor chain; 2—Crawler multifunctional platform; 201—Platform frame; 202—Power take-off shaft; 203—Rear suspension mechanism; 204—Control cabinet; 205—Crawler travel system; 206—Front suspension mechanism; 207—Vehicle shell; 3—Straw high-efficiency stratum combustion system; 301—Gas tank; 302—Chain drive shaft; 303—High-temperature resistant connecting rod; 304—High-temperature resistant gear connecting rod; 305—Air supply fan; 306—Stratum combustion chamber shell; 307—Multi-stage stratum combustion device; 308—Stratum combustion smoke exhaust pipe; 4—stubble in-situ burning and disinfection system; 401—stubble burning system suspension bracket; 402—stubble killing roller; 403—stubble burning nozzle; 404—stubble burning system structural frame; 405—smoke collection cover; 406—drive chain; 407—rotary tillage roller; 408—side drive shaft; 409—rotary tillage drag plate; 410—spraying device; 411—speed reducer; 412—power transmission shaft; 413—water pump; 414—water tank; 415—incineration smoke exhaust pipe; 5—Flue gas treatment system; 501—Air guide hood; 502—Metal mesh filter layer; 503—Electrostatic filter grid; 504—Ceramic filter layer; 505—Axial flow fan. DETAILED DESCRIPTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0022] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0023] like Figure 1-2 As shown: The present invention provides a rice and wheat straw field on-site burning and disinfection integrated machine as shown Figure 1As shown, it includes a straw picking and conveying system 1, a crawler-type multifunctional platform 2 equipped with a control cabinet 204, a straw efficient layer burning system 3, a stubble on-site burning and returning to the field disinfection system 4 and a flue gas treatment system 5. The straw picking and conveying system 1 is connected to the front suspension mechanism 206 of the crawler-type multifunctional platform 2 by its suspension bracket, and the crawler-type multifunctional platform 2 provides power to the drive shaft 106 for picking up the straw on the ground and conveying it to the straw efficient layer combustion system 2; the crawler-type multifunctional platform 2 is used to carry and drive the straw picking and conveying system 1, the straw efficient layer combustion system 3, the stubble in-situ burning and returning to the field disinfection system 4, and the flue gas treatment system 5 to move forward, and provide power for the all-in-one machine; the straw efficient layer combustion system 3 is installed on the platform frame 201 of the crawler-type multifunctional platform 2, and the straw transported by the straw picking and conveying system 1 will fall on the high-temperature resistant connecting rod 303 in the straw efficient layer combustion system 3. The straw efficient layer combustion system 3 is used to receive the straw transported by the straw picking and conveying system 1 and burn it into straw ash and fall it into the field. The flue gas generated by the layer combustion is transported to the flue gas treatment system 5 for filtration and discharge; the stubble in-situ burning and returning to the field disinfection system 4 is Its suspension bracket is connected to the rear suspension mechanism 203 of the crawler-type multifunctional platform 2, and the posture of the root stubble in-situ burning and returning to the field disinfection system 4 can be adjusted through the suspension mechanism. The root stubble in-situ burning and returning to the field disinfection system 4 is used to cut and crush the root stubble and throw it up together with the soil for directional burning, uniformly mix the burning residue and the soil, and perform leveling and cooling treatment. The smoke generated by the burning is transported to the smoke treatment system 5 for filtration and then discharged; the smoke treatment system 5 is used to treat the smoke generated by layer burning and incineration respectively. The smoke treatment system 5 is divided into two smoke filter boxes with the same functional structure. The front filter box is located on the platform frame 201 of the crawler-type multifunctional platform 2, and the waste gas generated during the burning process is transmitted through the layer burning smoke exhaust pipe 308 in the straw efficient layer burning system 3. The rear filter box is located at the rear of the body of the root stubble in-situ burning and returning to the field disinfection system 4, and the smoke generated during the root stubble burning is drawn out and filtered along the smoke collecting cover 405 through the incineration smoke exhaust pipe 415.

[0024] like Figure 2-Figure 3As shown, the straw picking and conveying system 1 includes: a picking system suspension bracket 101, a picking mechanism body 102, a guide grid 104, an auger 103, a spring-toothed roller 105, a transmission shaft 106, a straw conveying chain 109, a chain connecting rod 107, and a tooth connecting rod 108. The picking system suspension bracket 101 connects the straw picking and conveying system 1 with the crawler-type multifunctional platform 2, fixing the overall structure of the straw picking and conveying system 1; the picking mechanism body 102 has a grass separating function, which can separate the straw picked up by the spring-toothed roller 105 from the spring teeth, and provide main support for the spring-toothed roller 105 and the auger 103, ensuring the strength and stability of the straw picking and conveying system 1 during operation; the guide grid 104 is used to assist the spring-toothed roller 105 in picking up straw, prevent the spring teeth from picking up the straw, and guide the straw to the area where the auger 103 is located; the auger 103 automatically The body rotates to gather the scattered straw to the conveying area; the transmission shaft 106 distributes the power from the crawler multifunctional platform 2 to the straw conveying chain 109 and the auger 103, and drives the rotation of the spring-tooth roller 105; the straw conveying chain 109, the chain connecting rod 107 and the tooth connecting rod 108 together constitute the straw picking and conveying mechanism in the straw picking and conveying system 1; the chain connecting rod 107 receives the straw during the straw transportation process; the tooth connecting rod 108 is arranged at intervals with the chain connecting rod 107 in the straw picking and conveying mechanism, and is used to grab the straw and drive the straw to move.

[0025] like Figure 4 As shown, the crawler-type multifunctional platform 2 includes: a platform frame 201, a power output shaft 202, a rear suspension mechanism 203, a control cabinet 204, a crawler travel system 205, a front suspension mechanism 206 and a vehicle body shell 207. The crawler-type multifunctional platform 2 is driven by hybrid power, which can provide power for the crawler travel system 205, the straw picking and conveying system 1 and the stubble burning and returning to the field disinfection system 4, and can also provide power for the air supply fan 305, the water pump 413 and the flue gas treatment system 5; the platform frame 201 is used to carry the straw efficient layer burning system 3, the gas tank 301, the flue gas treatment system 5 and other heavy equipment; the power output shaft 202 provides power for the reducer 411 of the stubble burning and returning to the field disinfection system 4; the rear suspension mechanism 203 is used to control the stubble burning and returning to the field disinfection system The posture of the burning and returning to the field disinfection system 4 lifts or lowers the rear operating equipment; the control cabinet 204 is used to control the power distribution, gas flow, spray water volume, power output and many other aspects of each system, and is equipped with a remote control module, which can remotely control the equipment; the crawler walking system 205 has good off-road performance and can adapt to a variety of complex terrain conditions; the front suspension mechanism 206 is used to connect the straw picking and conveying system 1 to provide a fixed position; the body shell 207 is used to protect the sensitive devices in the all-in-one machine from interference from the harsh external environment.

[0026] like Figure 5-Figure 6 As shown, the straw efficient stratum combustion system 3 includes: a gas tank 301, a gas tank 301, a high temperature resistant connecting rod 303, a high temperature resistant tooth connecting rod 304, an air supply fan 305, a stratum combustion cavity shell 306, a multi-stage stratum combustion device 307 and a stratum combustion smoke exhaust pipe 308. The gas tank 301 is used to provide gas for the multi-stage layer combustion device 307 and the root stubble burning nozzle 403, and is placed on the platform frame 201 to improve the safety of the equipment during operation; the gas tank 301 transmits power from the crawler-type multifunctional platform 2, so that the straw is burned continuously; the high-temperature resistant connecting rod 303 is used to receive the unburned straw, and in order to make the ash of the burned straw fall, the gap of the high-temperature resistant connecting rod 303 is large, and the gaps between the high-temperature resistant connecting rod 303 and the high-temperature resistant tooth connecting rod 304 arranged at intervals are reserved so that the straw falls to the bottom of the inner cavity of the layer combustion cavity shell 306 through the gaps after being burned into straw ash; the high-temperature resistant tooth connecting rod 304 is used to pick up the straw and transport it to the bottom of the inner cavity of the layer combustion cavity shell 306 The straw in the conveying system 1 is grabbed to the burning area and driven to move along the chain; the air supply fan 305 is used to supply air to the burning area to improve the burning effect; the layer combustion cavity shell 306 is used to isolate the high temperature generated by the burning of the straw and effectively concentrate the generated heat. The bottom of the layer combustion cavity shell 306 is set downward from the front to the back so that the straw ash falling from the burning area is collected to the rear of the layer combustion cavity shell 306 and then falls into the field; the multi-stage layer combustion device 307 provides high-temperature flames to quickly burn the straw, and performs segmented layer combustion to improve the burning efficiency; the layer combustion smoke exhaust pipe 308 is used to collect the smoke generated by the burning in the layer combustion cavity shell 306, and then discharge it into the smoke treatment system 5.

[0027] like Figure 7-Figure 8As shown, the stubble in-situ burning and field disinfection system 4 includes: a field return system suspension bracket 401, a stubble killing roller 402, a stubble burning nozzle 403, a field return system structural frame 404, a smoke collection cover 405, a transmission chain 406, a rotary tillage roller 407, a side transmission shaft 408, a rotary tillage drag plate 409, a spray device 410, a reducer 411, a power transmission shaft 412, a water pump 413, a water tank 414 and a burning smoke exhaust pipe 415. The field returning system suspension bracket 401 is used to connect the rear suspension mechanism 203 of the crawler multifunctional platform 2, and the posture of the machine can be adjusted through the suspension mechanism; the stubble cutting roller 402 can cut and crush the soil together with the stubble through the high-speed rotating stubble cutting blade and throw it up; the high-temperature flame released by the stubble burning nozzle 403 burns the stubble on the surface of the soil, converting it into ashes, and disinfecting the soil during the straw burning process; the field returning system structural frame 404 is used to support the various components of the stubble in-situ burning and field returning disinfection system 4 to improve the structural stability of the system; the smoke collecting cover 405 ensures that the smoke generated during the burning process can be efficiently collected and guided, which is conducive to the smoke entering the smoke treatment system 5; the transmission chain 406 is used to transmit the power of the side transmission shaft 408 to the front stubble cutting shaft 402; the rotary tillage roller 407 is installed at the bottom of the machine and driven by the reducer 411 The movable blade roller rotates to achieve uniform mixing of the incineration residue and the soil, further improving the soil structure; the side transmission shaft 408 is used to distribute the power of the reducer 411 to the stubble cutting blade shaft 402; the rotary tillage drag plate 409 is located at the rear of the rotary tillage blade roller 407 to ensure that the soil is level after the operation; the spray device 410 is used to cool the soil after the root stubble burning and protect the soil microorganisms; the reducer 411 distributes power to the rotary tillage blade roller 407 and the side transmission shaft 408 through the connection with the power transmission shaft 412 to ensure the stability of the power distribution; the power transmission shaft 412 is used to effectively transmit power from the power output shaft 202 to the reducer 411; the water tank 414 is used to supply water to the spray device 410; the water pump 413 is used to pressurize the water of the spray device 410; the incineration smoke exhaust pipe 415 passes the smoke generated during the root stubble burning into the smoke treatment system 5 for treatment.

[0028] like Figure 9As shown, the flue gas treatment system 5 includes: a deflector 501, a metal mesh filter layer 502, an electrostatic filter grid 503, a ceramic filter layer 504, and an axial flow fan 505. The deflector 501 guides the flue gas evenly through the metal mesh filter layer 502; the metal mesh filter layer 502 is used to remove large dust particles generated during the incineration process; the electrostatic filter grid 503 is used to absorb small dust particles in the flue gas; the filter element material of the ceramic filter layer 504 reacts with substances such as nitrogen oxides and sulfur oxides in the flue gas, ultimately achieving gradient filtration; and the axial flow fan 505 creates a negative pressure environment within the flue gas treatment system 5, thereby guiding and centrally collecting the flue gas. Example

[0029] This embodiment provides a rice and wheat straw field on-site burning and disinfection integrated machine such as Figure 1 As shown, the system comprises a straw picking and conveying system 1, a crawler-type multifunctional platform 2 equipped with a control cabinet 204, a straw efficient layer combustion system 3, a stubble in-situ burning and disinfection system 4, and a flue gas treatment system 5. The straw picking and conveying system 1 includes a picking system suspension bracket 101, a picking mechanism body 102, an auger 103, a guide grid 104, a spring-tipped roller 105, a drive shaft 106, a chain connecting rod 107, a gear connecting rod 108, and a straw conveying chain 109. The crawler-type multifunctional platform 2 includes a platform frame 201, a power output shaft 202, a rear suspension mechanism 203, a control cabinet 204, a crawler travel system 205, a front suspension mechanism 206, and a vehicle body 207. The efficient straw stratum combustion system 3 includes a gas tank 301, a chain drive shaft 302, a high-temperature resistant connecting rod 303, a high-temperature resistant gear connecting rod 304, an air supply fan 305, a stratum combustion chamber shell 306, a multi-stage stratum combustion device 307, and a stratum combustion smoke exhaust pipe 308. The stubble in-situ burning and field disinfection system 4 includes a field disinfection system suspension bracket 401, a stubble cutting roller 402, a stubble burning nozzle 403, a field disinfection system frame 404, a smoke collection cover 405, a drive chain 406, a rotary tillage roller 407, a side drive shaft 408, a rotary tillage drag plate 409, a spray device 410, a speed reducer 411, a power transmission shaft 412, a water pump 413, a water tank 414, and a field disinfection smoke exhaust pipe 415. The flue gas treatment system 5 includes: a flow guide cover 501 , a metal mesh filter layer 502 , an electrostatic filter grid 503 , a ceramic filter layer 504 and an axial flow fan 505 .

[0030] The structure of the straw picking and conveying system 1 is as follows Figure 2-Figure 3As shown, the operating width of the straw picking and conveying system 1 is 2.3m; the diameter of the spring-tooth roller 105 is 30cm, the spring-tooth length is 8cm, and the spring-tooth spacing is 6cm; the diameter of the auger 103 is 25cm and the pitch is 20cm; the guide grid plate 104 has a grid plate spacing of 6cm; the rod length of the shifting tooth connecting rod 108 is 50cm, the shifting tooth length is 6cm, and the spacing between the two shifting tooth connecting rods 108 is 20cm.

[0031] The structure of the crawler multifunctional platform 2 is as follows Figure 4 As shown, the traction horsepower of the crawler multifunctional platform 2 is above 100HP, and the speed of the power output shaft 202 is 720r / min; the platform frame 201 is welded from 30mm square tubes; the high-speed mode speed of the crawler walking system 205 is 25km / h, and the speed of the operating mode is maintained at 3.6km / h, which can adapt to various complex terrains.

[0032] The structure of the straw efficient layer combustion system 3 is as follows: Figure 5 、 Figure 6 As shown, the straw high-efficiency layer combustion system 3 can burn 2160 kg of straw per hour, and the gas consumption is 45 kg per hour; the gas tank 301 is a standard 50 kg / tank; the layer combustion cavity shell 306 can effectively isolate the burning area from the external environment, so that the heat of the high-temperature flame is concentratedly utilized to improve the burning efficiency; the multi-stage layer combustion device 308 has a group of 3 high-temperature flame nozzles at the front and back of the top of the layer combustion cavity shell 306, the nozzle diameter of the high-temperature flame nozzle is 60 mm, the nozzle length is 8 cm, the interval between each two high-temperature flame nozzles is 22 cm, the front and back interval of the two groups of flame nozzles is 1.8 m, and the electronic ignition control element is integrated with the high-temperature flame nozzle; the air supply fan 305 consists of 3 small axial flow fans, and the maximum flow rate of a single axial flow fan is 800 m 3 / h; the layer combustion smoke exhaust pipe 307 is composed of three smoke exhaust outlets that are combined into a circular pipe with a diameter of 15 cm.

[0033] The structure of the stubble in-situ burning and field disinfection system 4 is as follows Figure 7 、 Figure 8As shown, the stubble burning and disinfection system 4 has an operating width of 2.3m and a rotary burial depth of 18cm. The rotation speed of the rotary tillage blade shaft 407 is 246r / min, the rotation speed of the stubble cutting blade shaft 402 is 385r / min, and the rotation speed of the power output shaft 202 is 720r / min. The stubble burning nozzle 403 has a total of 10 high-temperature flame nozzles, and the interval between the two high-temperature flame nozzles is 28cm. The sprayed flame is tilted forward by 15 degrees. The high-temperature flame moves forward to increase the area of the flame burning area. The smoke collection area cover 405 will burn the flame. A 20cm wide smoke collection area is separated from the flame burning area and the rotary tillage area. The front edge of the smoke collection area cover 405 is 5cm away from the ground surface, and the rear edge is 15cm away from the ground surface to prevent the rotary tillage blade from mounding the soil in front; the water pump 413 is a diaphragm pump with a maximum flow of 5L / min, a maximum pressure of 0.42MPa, and an input power of 40W; the water tank 414 has a capacity of 600L; the spray device 411 has 9 nozzles, a single nozzle flow of 30L / h, a working pressure of 3-4 kg, and an operating width of about 2.3 meters.

[0034] The structure of the flue gas treatment system 5 is as follows Figure 9 As shown, the cross-section of the air inlet of the air guide 501 is narrow, and the diameter of the air inlet is 15 cm. The cross-section of the air outlet is wide, and the air outlet is a rectangular outlet with a length of 70 cm and a width of 50 cm. The metal mesh filter layer 502 is a filter mesh with a 200-mesh metal mesh structure stacked together and a thickness of about 3 cm. The width of the electrostatic filter grid 503 is 5 cm, and the grid gap is 1 cm. The ceramic filter layer 504 includes 4 layers of honeycomb ceramic filter elements. The total thickness of the ceramic filter layer 504 is 8 cm, and the filter element can be replaced online. The filter element is made of cordierite-mullite composite ceramic with a porosity of more than 40%, a pore size of 5 μm, a pore density of 200 cpsi, and a specific surface area of more than 300 m 2 / g; The diameter of the axial flow fan 505 is 40 cm, the filter layer and pipeline resistance is about 2600Pa, and the maximum flow rate of the axial flow fan 505 is 3000m 3 / h, the power is about 4kw, which is enough to meet the working needs.

[0035] The working process of the rice and wheat straw field incineration and disinfection integrated machine provided by the present invention is as follows: During the preparation phase, equipment debugging is carried out before operation to ensure that all components are operating normally.

[0036] After the debugging is completed, the control system is started to start the all-in-one machine. The spring-toothed roller 105 rotates clockwise to pick up the straw on the ground and moves along the guide grid 104 to the conveying area of the auger 103. The scattered straw is rotated and shrunk by the auger 103 and gathered at the bottom of the straw picking and conveying mechanism of the straw picking and conveying system 1. The straw is picked up by the tooth connecting rod 108 in the straw picking and conveying mechanism and conveyed to the top of the layer burning conveying structure of the straw high-efficiency layer burning system 3 and falls; the straw is burned by the high-temperature flame in the straw high-efficiency layer burning system 3, and the generated straw ash passes through the gap of the layer burning conveying structure of the high-efficiency layer burning system 3. The straw ash falls onto the layer combustion chamber shell 306 and falls onto the field along the tilted bottom shell of the layer combustion chamber shell 306. The stubble-burning blade shaft 402 of the stubble-burning and field disinfection system 4 uses high-speed rotating blades to cut and crush the stubble and throw it up. The stubble is then burned with the high-temperature flame of the stubble burning nozzle 403, burning it into ash. The rotary blades on the rotary tillage roller 407 mix the stubble ash with the soil and cover it. The rotary tillage drag 409 behind the rotary tillage roller 407 suppresses and flattens the surface of the ground after rotary tillage. The multiple nozzles of the spray device 410 spray a curtain of water mist to reduce the soil temperature. During operation, the air supply fan 305 provides oxygen-enriched air into the layer combustion chamber shell 306. The flue gas is collected through the deflector 501 and collected through multiple pipes inside the flue gas filter box of the flue gas treatment system 5. The flue gas is discharged to the outside after three-stage filtration. A smoke collection area is located between the stubble burning nozzle 403 and the rotary tillage roller 407 in the stubble burning and disinfection system 4. This area collects the smoke from the burning process. The smoke then flows through the burning smoke exhaust pipe 415 into the smoke treatment system 5 and is then processed by the smoke filter box within the smoke treatment system 5. After the operation is completed, the main gas valve and the equipment power system are shut off through the control cabinet 204, and cleaning and necessary maintenance are performed to ensure that the equipment remains in good working condition for the next operation.

[0037] The present invention provides an integrated machine for in-situ burning and disinfection of rice and wheat straw in the field, which has significant effects, mainly reflected in the efficient treatment of straw, inactivation of pests and diseases, and environmental protection and energy saving. It provides efficient and environmentally friendly technical and equipment support for the resource utilization of rice and wheat straw. Through the innovative design of the "front spring tooth picking-middle chain conveying-end cavity incineration" operation process, the integrated machine can directly burn straw into ash residue in the field. To address the problem of difficult decomposition of underground stubble, the in-situ burning and disinfection system 4 for returning straw to the field is used to achieve an integrated operation process of straw stubble removal, shallow rotary throwing, directional burning, smoke collection and burying and returning to the field. This operation process and operation process do not require straw to be transported out of the field or complicated to handle, greatly improving the efficiency of field straw treatment, while providing a high-quality source of potassium fertilizer for the soil, effectively improving soil fertility. The all-in-one machine uses the high temperature environment during the burning process to completely kill pathogens, insect eggs and other harmful organisms in the straw, preventing insect eggs from using straw to reproduce over the winter, and reducing the probability of disease and insect pests from the source; reducing dependence on chemical fungicides and reducing the potential impact of chemical use on the environment. During the operation process, the all-in-one machine is equipped with a flue gas treatment system 5, which comprehensively utilizes technical methods such as metal mesh filtration, electrostatic adsorption and ceramic filtration adsorption to effectively treat the flue gas and particulate matter generated during the burning process to ensure that emissions meet standards. The all-in-one machine provided by the present invention provides an environmentally friendly technical solution for on-site disposal of farmland residues through an efficient straw picking and conveying system 1, an efficient straw layer burning system 3, an on-site stubble burning and returning to the field disinfection system 4 and a flue gas treatment system 5, and has broad application prospects and practical value.

[0038] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on specific circumstances.

[0039] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0040] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0041] The above embodiments are only for illustrating the technical ideas of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made on the basis of the technical solutions in accordance with the technical ideas proposed by the present invention fall within the scope of protection of the present invention; any technologies not involved in the present invention can be implemented by existing technologies.

Claims

1. A rice and wheat straw field incineration and disinfection integrated machine, characterized by: The all-in-one machine includes: The straw picking and conveying system (1) is installed in front of the crawler-type multifunctional platform (2) that provides power output, and is used to pick up the straw on the ground and convey it to the straw high-efficiency layer combustion system (3); The crawler-type multifunctional platform (2) is used to carry and drive the straw picking and conveying system (1), the straw high-efficiency layer burning system (3), the stubble in-situ burning and returning to the field disinfection system (4), and the flue gas treatment system (5), and provides power and control functions for the integrated machine; The straw high-efficiency layer combustion system (3) is installed on the top of the crawler multifunctional platform (2) and is used to receive the straw transported by the straw picking and transporting system (1) and burn it into straw ash that falls into the field. The smoke generated by the layer combustion is transported to the smoke treatment system (5) for filtration and discharge. The stubble in-situ burning and returning to the field disinfection system (4) is installed directly behind the crawler-type multifunctional platform (2) that provides power output, and is used to cut and crush the stubble and throw it up together with the soil for directional burning, uniformly mix the burning residue with the soil, and perform leveling and cooling treatment. The smoke generated by the burning is transported to the smoke treatment system (5) for filtration and discharge; The flue gas treatment system (5) is installed on the top of the crawler multifunctional platform (2) and is used to treat the flue gas generated by the layer burning, and is installed on the top of the root stubble in-situ burning and returning to the field disinfection system (4) and is used to treat the flue gas generated by the burning.

2. The rice and wheat straw field incineration and disinfection integrated machine according to claim 1, characterized in that: The straw picking and conveying system (1) comprises a spring-toothed roller (105), a guide grid (104), an auger (103) and a straw picking and conveying mechanism. The spring-toothed roller (105) can rotate to pick up straw on the ground. The guide grid (104) is used to assist the spring-toothed roller (105) in picking up straw and prevent the spring teeth from picking up the straw and guiding the straw picked up by the spring teeth of the spring-toothed roller (105) to the area where the auger (103) is located. The auger (103) gathers the scattered straw to the bottom of the straw picking and conveying mechanism through its own rotation. The straw picking and conveying mechanism picks up the straw and conveys it to the top of the layer burning conveying structure of the straw high-efficiency layer burning system (3) and drops it onto the layer burning conveying structure.

3. The rice and wheat straw field in-situ burning and disinfection integrated machine according to claim 1 or 2, characterized in that: The straw picking and conveying system (1) comprises a picking system suspension bracket (101), a picking mechanism body (102), an auger (103), a guide grid plate (104), a spring-tooth roller (105), a transmission shaft (106), a chain connecting rod (107), a tooth connecting rod (108) and a straw conveying chain (109). The straw picking and conveying system (1) is installed on the rear suspension mechanism (203) of the crawler-type multifunctional platform (2) through the picking system suspension bracket (101). The mechanism body (102) is provided with an auger (103) and a spring-toothed roller (105) that require the crawler-type multifunctional platform (2) to provide power, as well as a guide grid (104). The spring-toothed roller (105) is located in front of the auger (103) and the front and top of the spring-toothed roller (105) are covered with a guide grid (104) extending toward the auger (103). The transmission shaft (106) is used to receive the power transmitted forward by the power output mechanism on the crawler-type multifunctional platform (2). The transmission shaft (106) The conveying sprocket connected to the straw conveying chain (109) in the straw picking and conveying mechanism is provided, and the auger sprocket connected to the auger (103) is provided. The transmission shaft (106) transmits power to the auger (103) through the chain connected to the auger sprocket. The auger (103) transmits power to the spring-toothed roller (105) through the transmission chain. The power output mechanism on the crawler-type multifunctional platform (2) transmits power forward to drive the straw picking and conveying mechanism, the auger (103), and the spring-toothed roller (105) at the same time. The chain connecting rod (107) and the tooth connecting rod (108) arranged at intervals on the straw conveying chain (109) together with the straw conveying chain (109) constitute a straw picking and conveying mechanism, the lower end of the straw picking and conveying mechanism is used to connect the output area of the auger (103), and the upper end is used to connect the layer combustion conveying mechanism of the straw efficient layer combustion system (3), the chain connecting rod (107) receives the straw during the straw transportation process, and the tooth connecting rod (108) is used to grab the straw and drive the straw to move.

4. The rice and wheat straw field in-situ burning and disinfection integrated machine according to claim 1, characterized in that: The crawler-type multifunctional platform (2) is driven by hybrid power and can provide power for the crawler walking system (205), the straw picking and conveying system (1), the straw high-efficiency layer burning system (3) and the stubble in-situ burning and returning to the field disinfection system (4), and can supply power to the air supply fan (305) in the straw high-efficiency layer burning system (3), the water pump (413) in the stubble in-situ burning and returning to the field disinfection system (4) and the flue gas treatment system (5); the crawler-type multifunctional platform (2) can control itself as well as the straw picking and conveying system (1), the straw high-efficiency layer burning system (3), the stubble in-situ burning and returning to the field disinfection system (4) and the flue gas treatment system (5).

5. The rice and wheat straw field in-situ burning and disinfection integrated machine according to claim 1 or 4, characterized in that: The crawler-type multifunctional platform (2) includes a platform frame (201), a power output shaft (202), a rear suspension mechanism (203), a control cabinet (204), a crawler travel system (205), a front suspension mechanism (206) and a vehicle body shell (207). The platform frame (201) can carry heavy equipment in the straw high-efficiency layer burning system (3), the flue gas treatment system (5) and the root stubble in-situ burning and returning to the field disinfection system (4); the power output shaft (202) provides power for the reducer (411) of the root stubble in-situ burning and returning to the field disinfection system (4); the rear suspension mechanism (203) is used to suspend and control the posture of the root stubble in-situ burning and returning to the field disinfection system (4) , lifting or lowering the stubble burning and returning to the field disinfection system (4) at the rear; the control cabinet (204) can control the entire all-in-one machine and a remote control module is configured in the control cabinet (204), which can remotely control the all-in-one machine through the control cabinet (204); the crawler-type multifunctional platform (2) adopts a crawler walking system (205) for support and travel; the front suspension mechanism (206) is used to connect and fix the straw picking and conveying system (1); the vehicle body shell (207) is used to protect the sensitive components in the all-in-one machine; the crawler-type multifunctional platform (2) also includes a power output mechanism that can simultaneously provide transmission power for the straw picking and conveying system (1) and the straw high-efficiency layer burning system (3).

6. The rice and wheat straw in-situ burning and disinfection integrated machine according to claim 1, characterized in that: The straw efficient layer combustion system (3) comprises a gas tank (301), a layer combustion conveying mechanism, a layer combustion cavity shell (306), a multi-stage layer combustion device (307) and a layer combustion smoke exhaust pipe (308). The layer combustion conveying mechanism, the front end of which extends out of the layer combustion cavity shell (306), is used to receive the straw delivered by the straw picking and conveying system (1) and transport it into the layer combustion cavity shell (306). The gas tank (301) placed on the platform frame (201) in the crawler-type multifunctional platform (2) provides gas for the high-temperature flame nozzle in the multi-stage layer combustion device (307) and the root stubble burning nozzle (403) in the root stubble in-situ burning and returning to the field disinfection system (4). The multi-stage layer combustion device (307) provides high-temperature flame to quickly burn the straw, and the generated smoke is discharged to the smoke treatment system (5) for treatment through the layer combustion smoke exhaust pipe (308).

7. The rice and wheat straw in-situ burning and disinfection integrated machine according to claim 1 or 6, characterized in that: The straw efficient layer combustion system (3) comprises a gas tank (301), a chain transmission shaft (302), a high temperature resistant connecting rod (303), a high temperature resistant tooth connecting rod (304), an air supply fan (305), a layer combustion cavity shell (306), a multi-stage layer combustion device (307) and a layer combustion smoke exhaust pipe (308), wherein the gas tank (301) is placed on a platform frame (201) and is respectively connected to a high temperature flame nozzle in the multi-stage layer combustion device (307) and a stubble burning nozzle (403) in a stubble in-situ burning and disinfection system (4) through a gas pipeline with a valve, wherein the layer combustion cavity shell (306) is located on the platform frame (201), and a layer combustion conveying mechanism with one end extending out of the layer combustion cavity shell (306) is composed of two chain transmission shafts (302) matching the layer combustion conveying chain, a high temperature resistant connecting rod (303) and a high temperature resistant tooth connecting rod (304), and the layer combustion conveying mechanism is characterized in that the layer combustion conveying mechanism has a plurality of chain transmission shafts (302) matching the chain transmission chain, a high temperature resistant connecting rod (303) and a high temperature resistant tooth connecting rod (304), and ... The extended end of the mechanism is located just below the output end of the straw picking and conveying mechanism, and one of the chain transmission shafts (302) is used to receive the power transmitted upward by the power output mechanism on the crawler-type multifunctional platform (2). The high-temperature resistant connecting rod (303) and the high-temperature resistant tooth connecting rod (304) are arranged at intervals on the layer combustion conveying chain between the two chain transmission shafts (302). The high-temperature resistant connecting rod (303) is used to receive unburned straw, the high-temperature resistant tooth connecting rod (304) is used to grab the straw conveyed by the straw picking and conveying system (1) to the burning area, and the straw on the high-temperature resistant tooth connecting rod (304) moves along the conveying direction of the layer combustion conveying chain; the top of the layer combustion cavity shell (306) is equipped with a multi-stage layer combustion device (307), an air supply fan (305) is equipped on one side, and a smoke exhaust port is equipped on the opposite side of the air supply fan (305), and the smoke exhaust port and the air supply fan (305) are arranged at intervals.

8. The rice and wheat straw in-situ burning and disinfection integrated machine according to claim 1, characterized in that: The stubble burning and returning to the field disinfection system (4) comprises a stubble cutting roller (402), a stubble burning nozzle (403), a smoke collecting cover (405), a rotary tillage roller (407), a rotary tillage drag (409), and a spraying device (410). The high-speed rotating stubble cutting blades on the stubble cutting roller (402) cut and crush the soil together with the stubble and throw them to the bottom of the stubble burning nozzle (403). The high-temperature flame released by the stubble burning nozzle (403) The stubble on the soil surface is burned and turns into ashes that fall into the field. The smoke collecting cover (405) is used to collect and guide the smoke generated during the burning process into the smoke treatment system (5). The rotary blades on the rotary tillage roller (407) rotate to evenly mix the burning residue with the soil. The rotary tillage drag (409) is used to level the soil mixed with the burning residue. The spraying device (410) cools the soil after straw stubble removal, shallow rotary throwing, directional burning, smoke collection and burial and return to the field.

9. The rice and wheat straw in-situ burning and disinfection integrated machine according to claim 1 or 8, characterized in that: The stubble in-situ burning and returning to the field disinfection system (4) comprises a returning to the field system hanging bracket (401), a stubble killing knife roller (402), a stubble burning nozzle (403), a returning to the field system structural frame (404), a smoke collecting cover (405), a transmission chain (406), a rotary tillage knife roller (407), a side transmission shaft (408), a rotary tillage drag plate (409), a spraying device (410), a speed reducer (411), a power transmission shaft (412), A water pump (413), a water tank (414) and a burning smoke exhaust pipe (415), a stubble in-situ burning and returning to the field disinfection system (4) are installed on the rear suspension mechanism (203) of the crawler-type multifunctional platform (2) through a returning to the field system suspension bracket (401), a stubble killing knife roller (402) with a stubble killing knife, a stubble burning nozzle (403), a smoke collecting cover (405), a rotary tillage knife roller (407) with a rotary tillage knife, and a rotary tillage drag plate (409) are connected by The stubble burning nozzle (403) is connected to the gas tank (301) through a gas pipeline with a valve. The smoke collecting cover (405) is adjacent to the stubble burning nozzle (403) and is lower than the part adjacent to the rotary tillage roller (407). The smoke collecting cover (405) is connected to the smoke treatment system (5) through the burning smoke exhaust pipe (415). The spray device above the rotary tillage drag plate (409) (410) is connected to the water pump (413) and the water tank (414) on the platform frame (201) in sequence through a water pipe; the reducer (411) is connected to the power output shaft (202) through a power transmission shaft (412) and the reducer (411) can distribute power to the rotary tillage roller (407) and the side transmission shaft (408); the side transmission shaft (408) transmits power to the front stubble cutting roller (402) through a transmission chain (406).

10. The rice and wheat straw in-situ burning and disinfection integrated machine according to claim 1, characterized in that: The flue gas treatment system (5) includes a flue gas filter box consisting of a guide cover (501), a metal mesh filter layer (502), an electrostatic filter grid (503), a ceramic filter layer (504) and an axial flow fan (505), wherein the guide cover (501) is arranged at the inlet of the flue gas filter box, the metal mesh filter layer (502), the electrostatic filter grid (503) and the ceramic filter layer (504) are arranged in sequence in the inner cavity of the flue gas filter box, and the axial flow fan (505) is arranged at the outlet of the flue gas filter box; the guide cover (501) guides the flue gas to pass through the metal mesh filter layer (502) evenly, and the metal mesh filter layer (502) is used to remove large particles of dust generated during the incineration process; the electrostatic filter grid (503) is used to absorb small particles of dust in the flue gas; the filter element material of the ceramic filter layer (504) can react with components in the flue gas; and the axial flow fan (505) can form a negative pressure environment in the flue gas filter box.

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