A cleaning device and control method and harvester

Abstract

The present application provides a kind of cleaning device and control method and harvester, screen, speed changer, hot air blowing device, control system, transmission system, grain loss feedback device, oil supply system and temperature and humidity detection mechanism;The vibration frequency of screen and the blowing temperature of hot air blowing device can be adjusted, so that the cleaning device can dynamically adjust the overall cleaning device according to the moisture content of crops, improve the air drying effect of the cleaning device on the wet crops, avoid the occurrence of wet crop adhesion condition, and also avoid the influence of the temperature of the cleaning device on crop cleaning;The present application also feeds back the overall control system according to the loss of crop grains, when the loss of crops is too large in unit time, the system will adjust the frequency of vibrating screen and adjust the temperature of hot air blowing device to reduce the loss rate and impurity rate of crops and improve the harvesting effect of crops.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of intelligent control of agricultural machinery, and particularly relates to a cleaning device, a control method and a harvester. BACKGROUND

[0002] At present, most of the combined harvesters adopt the axial flow roller type device to separate and separate crops and impurities, and the axial flow roller is generally divided into plate type, bar type and rod tooth type, and the cleaning screen uses a vibrating screen, and then a fan is used to separate the crops and impurities again. The grains in the material fall into the grain conveying auger through the vibrating screen, and the stems and the like are thrown out of the machine by the vibrating screen. However, when the moisture on the crops is too much, the existence of water can form a liquid bridge, which will cause the crops and impurities to adhere to each other, and also cause the crops and impurities to adhere to the screen, so that the cleaning and separation effect of the wet crops is greatly reduced. At the same time, manual cleaning of the clogged screen is required, which increases the work intensity of the workers, indirectly affects the overall harvesting performance of the harvester, and at the same time, the biggest disadvantage of the vibrating screen is that it produces a large vibration to the machine, thereby causing a large noise, and the vibration also easily causes the fasteners to loosen, causes the frame and the screen frame to crack, and the like. The excessive vibration will make the cleaning process of the wet crops too fast, which will cause the grain loss and the impurity content of the crops to be too high, and reduce the harvesting effect of the wet crops.

[0003] In addition, the degree of wetness of the wet crops will change due to the harvesting conditions of the day. When the vibration speed of the vibrating screen is unchanged, the grain loss of the cleaning device will be too high, which greatly increases the loss rate and the impurity content of the crops. The existing cleaning device lacks an automatic speed regulation system for the screen. At the same time, the existing cleaning device uses a fan to separate the crops, which requires a circuit to supply power to the fan, and requires an additional energy supply system, so that the structure has the problem of insufficient endurance, and lacks intelligent control of the fan heating device, so that the moisture separation effect of the wet crops is not ideal. The existing cleaning device lacks feedback of crop loss to the overall cleaning device, and cannot dynamically adjust the cleaning device according to the loss of the crops, so that the crop loss rate of the existing cleaning device is too high. SUMMARY

[0004] In view of the above technical problems, the present application provides a cleaning device, a control method and a harvester, which breaks the moisture liquid bridge between the moist crops in the form of hot air, so that the crops are separated from the impurities, the preliminary temperature and humidity of the moist crops entering the screening device can be detected, and the screening process of the moist crops on the screen and the hot air blowing device are monitored, so as to control the speed changing device and the hot air blowing device, and the vibration frequency of the screen and the blowing temperature of the hot air blowing device can be adjusted, so that the cleaning device can be dynamically adjusted according to the moisture degree of the crops, the air drying effect of the cleaning device on the moist crops is improved, the adhesion of the moist crops is avoided, and the influence of the temperature of the cleaning device on the crops is avoided.

[0005] Note that the description of these objects does not hinder the existence of other objects. One embodiment of the present application does not need to achieve all the above-mentioned objects. The objects other than the above-mentioned objects can be extracted from the description, drawings and claims.

[0006] The present application achieves the above technical objects by the following technical means.

[0007] A cleaning device, comprising a screen, a speed changing device, a hot air blowing device, a control system, a transmission system, a grain loss feedback device, an oil supply system and a temperature and humidity detection mechanism.

[0008] The screen is located below the threshing cylinder device, and the screen is connected with the transmission system.

[0009] The transmission system is used to drive the screen to vibrate; the speed changing device is connected with the transmission system, and is used to adjust the vibration speed of the screen.

[0010] The air outlet of the hot air blowing device faces the bottom of the screen; the hot air blowing device is connected with the oil supply system, and the temperature and humidity detection mechanism is used to detect the temperature and humidity of the crops at the air outlet of the hot air blowing device.

[0011] The grain loss feedback device is located behind the screen, and is used to detect the grain loss rate.

[0012] The control system is connected with the speed changing device, the hot air blowing device, the transmission system, the grain loss feedback device, the oil supply system and the temperature and humidity detection mechanism respectively; the control system controls the speed changing device and the transmission system to adjust the vibration frequency of the screen according to the temperature and humidity detected by the temperature and humidity detection mechanism and the grain loss rate detected by the grain loss feedback device, and controls the blowing temperature of the hot air blowing device.

[0013] In the above scheme, when the humidity received by the control system is higher than the preset value and the temperature is lower than the preset value, the control system controls the variable speed device to increase the vibration frequency of the screen and controls the hot air blowing device to increase the air outlet temperature; when the grain loss detected by the grain loss feedback device in unit time is higher than the preset value, the control system controls the hot air blowing device to increase the air outlet temperature and controls the variable speed device to decrease the vibration frequency of the screen.

[0014] In the above scheme, the screen comprises a second screen and a first screen.

[0015] The second screen is located behind the first screen.

[0016] The box of the hot air blowing device is provided with a first air outlet and a second air outlet; the first air outlet is located below the second screen, and the second air outlet is located below the first screen.

[0017] The variable speed device is connected with the first screen and connected with the second screen through a transmission system; the grain loss feedback device is located at the rear end of the second screen.

[0018] In the above scheme, the variable speed device comprises an eccentric shaft fixing frame, an eccentric shaft power input wheel, an eccentric shaft, an engine power input shaft, an eccentric shaft power receiving wheel, a second screen power input belt, a second screen power input pulley, a hydraulic stepless transmission box, a first screen eccentric sleeve, a hydraulic oil pipe, a hydraulic oil pump control line, a hydraulic pump motor driver, a hydraulic oil pump and an eccentric wheel.

[0019] The engine power input wheel is connected with the hydraulic stepless transmission box; the second screen power input belt is matched with the second screen power input pulley to transmit power to the second screen; the eccentric shaft power receiving wheel and the second screen power input pulley are installed on the output shaft of the hydraulic stepless transmission box and rotate together; the eccentric shaft power input wheel is installed on the eccentric shaft, the eccentric shaft is installed on the eccentric shaft fixing frame, the eccentric shaft power input wheel is engaged with the eccentric shaft power receiving wheel; power is input from the engine power input wheel and output from the eccentric shaft power receiving wheel, part of the power is transmitted to the second screen through the second screen power input pulley, and part of the power is transmitted to the eccentric shaft through the eccentric shaft power input wheel; the eccentric shaft is provided with an eccentric wheel, the first screen eccentric sleeve is connected with the eccentric wheel, and the first screen eccentric sleeve is connected with the first screen; the hydraulic oil pump is connected with the hydraulic stepless transmission box through the hydraulic oil pipe.

[0020] The hydraulic pump motor driver is connected with the hydraulic oil pump and the control system respectively.

[0021] The transmission system comprises a second screen eccentric wheel and a second screen power pulley; the second screen power pulley is connected with the second screen power input pulley on the transmission device through belt transmission; the second screen eccentric wheel is connected with the second screen through a connecting rod.

[0022] In the scheme, the hot air blowing device further comprises a power device, a rotating fan blade, a rotating fan blade shaft, a first oil injection device, a second oil injection device, a first combustion cavity shell, a second combustion cavity shell, a first spark plug and a second spark plug;

[0023] The power device is connected with the first oil injection device, the second oil injection device, an oil supply system and a control system respectively;

[0024] The rotating fan blade and the rotating fan blade shaft are arranged in the box body, the driving mechanism is connected with the rotating fan blade shaft through a transmission mechanism, and the rotating fan blade is mounted on the rotating fan blade shaft;

[0025] The first oil injection device is arranged in the first air outlet, the first oil injection device comprises a first diesel oil atomization plate and a first air outlet oil injection nozzle, the first air outlet oil injection nozzle is arranged on the first diesel oil atomization plate, the first combustion cavity shell is sleeved on the first diesel oil atomization plate, a plurality of through holes are arranged on the first combustion cavity shell, and the first spark plug is used for igniting the atomized fuel in the first combustion cavity shell;

[0026] The second oil injection device is arranged in the second air outlet, the second oil injection device comprises a second diesel oil atomization plate and a second air outlet oil injection nozzle, the second air outlet oil injection nozzle is arranged on the second diesel oil atomization plate, the second combustion cavity shell is sleeved on the second diesel oil atomization plate, a plurality of through holes are arranged on the second combustion cavity shell, and the second spark plug is used for igniting the atomized fuel in the second combustion cavity shell.

[0027] Further, the first air outlet heat insulation plate and the second air outlet heat insulation plate are further arranged;

[0028] The first air outlet heat insulation plate is arranged in the first air outlet and located at the side of the first combustion cavity shell and opposite to the first air outlet oil injection nozzle, and the second air outlet heat insulation plate is arranged in the second air outlet and located at the side of the second combustion cavity shell and opposite to the second air outlet oil injection nozzle.

[0029] Further, the power device comprises a diesel pump, a driving device, a motor driving device control line, an oil inlet pipe and a diesel engine; the diesel pump is provided with the oil inlet pipe, and the diesel pump is connected with the driving device and the control system through the motor driving device control line respectively; the oil inlet pipe is connected with the oil supply system, diesel oil of the harvester is introduced into the diesel pump, the diesel pump is connected with the second air outlet oil injection nozzle, the first air outlet oil injection nozzle and the diesel engine through the oil pipe respectively, and the second spark plug and the first spark plug are connected with the driving device respectively.

[0030] The transmission mechanism comprises a rotating fan blade power wheel, a diesel engine belt, and a diesel engine pulley; the output shaft of the diesel engine is connected with the diesel engine pulley, the diesel engine pulley is connected with the rotating fan blade power wheel through the diesel engine belt, and power is transmitted to the rotating fan blade shaft to drive the rotation of the rotating fan blade; the diesel pump introduces oil into the second air outlet nozzle and the first air outlet nozzle and the diesel engine, and atomizes the oil through the second diesel atomizing plate and the first diesel atomizing plate; the diesel engine transmits power to the rotating fan blade shaft through the diesel engine pulley, the diesel engine belt, and the rotating fan blade power wheel to drive the rotation of the rotating fan blade.

[0031] A harvester comprising the cleaning device.

[0032] A control method according to the cleaning device, comprising the following steps:

[0033] The transmission system drives the screen to vibrate; and the air outlet of the hot air blowing device blows air against the bottom of the screen.

[0034] The grain loss feedback device detects the grain loss rate of the screen.

[0035] The temperature and humidity detection mechanism detects the temperature and humidity of the crops at the air outlet of the hot air blowing device.

[0036] The control system controls the variable speed device and the transmission system to adjust the vibration frequency of the screen and controls the air outlet temperature of the hot air blowing device according to the temperature and humidity detected by the temperature and humidity detection mechanism and the grain loss rate detected by the grain loss feedback device.

[0037] When the humidity received by the control system is higher than the preset value and the temperature is lower than the preset value, the control system controls the variable speed device to increase the vibration frequency of the screen and controls the hot air blowing device to increase the air outlet temperature; when the grain loss detected by the grain loss feedback device per unit time is higher than the preset value, the control system controls the hot air blowing device to increase the air outlet temperature and controls the variable speed device to reduce the vibration frequency of the screen.

[0038] In the above scheme, the seed loss feedback device is first started, and when the crop loss amount monitored by the seed loss feedback device within a unit time is greater than the preset range, the control system starts to scan the data of the temperature and humidity detection mechanism one by one. The temperature and humidity detection mechanism on the first screen mesh of the second air outlet is scanned first, and if the temperature and humidity is higher than the preset range, the air outlet temperature of the second air outlet of the hot air blowing device is lowered, otherwise the air outlet temperature of the second air outlet of the hot air blowing device is gradually increased to the maximum value within the preset range. Then the temperature and humidity of the temperature and humidity detection mechanism of the second screen mesh of the first air outlet is scanned, and it is judged whether the temperature and humidity is higher than the preset range. If not, the air temperature of the first air outlet is lowered, and the vibration frequency of the screen mesh is not adjusted. If the temperature and humidity is higher than the preset value, the air outlet temperature of the second air outlet is lowered, and the vibration frequency of the first screen mesh is also lowered, and the seed loss feedback device monitors the loss in real time during this process. When the crop loss amount monitored by the seed loss feedback device within a unit time is within the preset range, the control system starts to scan the data of the temperature and humidity detection mechanism one by one. At this time, only the temperature detected by the temperature and humidity detection mechanism is adjusted, and the preset vibration frequency is operated. The temperature and humidity detection mechanism of the first screen mesh is detected first, and when the detected humidity is greater than the preset value, the air drying temperature of the second air outlet is increased, and the vibration frequency of the screen mesh is also increased. Then the temperature and humidity of the second screen mesh is judged whether it matches the preset screen mesh vibration frequency. If it matches, the air outlet temperature is maintained, and if it does not match, the air temperature of the first air outlet is increased.

[0039] Compared with the prior art, the beneficial effects of the present application are:

[0040] 1. The present application can adjust the vibration frequency of the screen mesh of the screening device steplessly according to the temperature and humidity of the wet crops, which can process different degrees of wet crops with different vibration frequencies, and can reduce the situation that the separation effect is poor due to the mismatch between vibration and humidity. The adjustable vibration frequency according to the temperature and humidity of the wet crops can make the wet crops contact well with the hot air of the hot air blowing device, and improve the separation effect of the wet crops and impurities.

[0041] 2. The present application can adjust the air temperature of each air outlet of the hot air blowing device individually according to the temperature and humidity of the wet crops, which can adapt to the temperature needs of different air drying stages of the wet crops, and monitor the temperature and humidity of the wet crops to avoid the situation that the hot air blowing device over-temperature the wet crops and the air drying temperature is not enough, reduce the oil consumption of the hot air blowing device, and ensure the safety of the device while separating the wet crops.

[0042] 3. The application can feed back the control system with the loss of crop grains, when the loss of crop grains is too high, the control system will adjust the vibration frequency of the screen and the temperature of the hot air blowing device, under the condition of ensuring the screening amount, the crop loss rate and the impurity rate are reduced, so as to improve the harvesting efficiency of crops.

[0043] 4. The hot air blowing device of the application, the energy supply system is the original oil supply system, compared with the additional electric energy device required by motor driving and motor heating, the energy supply of the device is more stable, and the problem of short endurance of electric energy does not need to be considered, which greatly improves the endurance and reliability, and the control system can be connected with the original mechanical battery, so as to save the development cost.

[0044] 5. The application can adjust the oil injection amount in the hot air blowing device according to the temperature and humidity of the wet crops in the front, middle, middle back and back of the screen, in addition to adjusting the vibration speed of the screen, when the humidity of the wet crops is high and the temperature is low, the oil injection amount can be increased to increase the temperature of the hot air blowing device, when the humidity of the wet crops is low and the temperature is high, the oil injection amount can be reduced to reduce the temperature of the hot air blowing device, the dynamic adjustment of the oil injection amount reduces the oil consumption of the hot air blowing device.

[0045] Note that the description of these effects does not preclude the existence of other effects. One embodiment of the present application does not necessarily have all the above-mentioned effects. Effects other than the above-mentioned effects can be clearly seen and extracted from the description, drawings, claims, etc. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the application;

[0047] Figure 2 It is a schematic diagram of the structure of a speed change device of an embodiment of the application;

[0048] Figure 3 It is a schematic diagram of the details of a speed change device of an embodiment of the application Figure I ;

[0049] Figure 4 It is a schematic diagram of the details of a speed change device of an embodiment of the application Figure II ;

[0050] Figure 5 It is a schematic diagram of the structure of a hot air blowing device of an embodiment of the application Figure I ;

[0051] Figure 6 It is a schematic diagram of the structure of a hot air blowing device of an embodiment of the application Figure II ;

[0052] Figure 7 Structure diagram of hot air blowing device for an embodiment of the present application Figure III ;

[0053] Figure 8 Structure diagram of hot air blowing device for an embodiment of the present application Figure IV ;

[0054] Figure 9 Structure diagram of hot air blowing device for an embodiment of the present application Figure V ;

[0055] Figure 10 Structure diagram of rotating fan blade of hot air blowing device for an embodiment of the present application

[0056] Figure 11 Structure diagram of oil injection device of hot air blowing device for an embodiment of the present application

[0057] Figure 12 Structure diagram of hardware connection of control system for an embodiment of the present application

[0058] Figure 13 Structure diagram of transmission system for an embodiment of the present application

[0059] Figure 14 Layout diagram of temperature and humidity sensor for speed regulation of warm air control for an embodiment of the present application

[0060] Figure 15 Structure diagram of seed loss feedback device for an embodiment of the present application

[0061] Figure 16 Structure diagram of oil supply oil circuit for an embodiment of the present application

[0062] Figure 17 Control flow diagram for an embodiment of the present application

[0063] Figure 18 Working state diagram for an embodiment of the present application

[0064] In the figure: 1 - speed change device, 2 - hot air blowing device; 3 - control system; 4 - transmission system; 5 - grain loss feedback device; 6 - oil supply system; 101 - eccentric shaft fixing frame, 102 - eccentric shaft power input wheel, 103 - eccentric shaft, 104 - engine power input shaft, 105 - eccentric shaft power receiving wheel, 106 - second screen power input belt, 107 - second screen power input pulley, 108 - hydraulic stepless transmission, 109 - first screen eccentric sleeve, 1010 - hydraulic oil pipe, 1011 - hydraulic oil pump control line, 1012 - hydraulic pump motor driver, 1013 - hydraulic oil pump, 1014 - eccentric wheel, 108-1 - driving cone fixed wheel, 108-2 - driven cone fixed wheel, 108-3 - driven cone hydraulic wheel, 108-4 - lubrication system, 108-5 - metal belt, 108-6 - hydraulic cavity, 108-7 - driving cone hydraulic wheel, 201 - first air outlet, 202 - diesel pump, 203 - driving device, 204 - motor driving device control line, 205 - oil inlet pipe, 206 - second air outlet, 207 - small diesel engine, 208 - second air outlet heat insulation plate, 209 - rotating fan blade, 2010 - rotating fan blade shaft, 2011 - second air outlet oil nozzle, 2012 - second diesel atomizing plate, 2013 - second spark control line, 2014 - second spark plug, 2015 - rotating fan blade power wheel, 2016 - diesel engine belt, 2017 - diesel engine pulley, 2018 - rotating fan blade mounting device, 2019 - first air outlet heat insulation plate, 2020 - first diesel atomizing plate, 2021 - first air outlet oil nozzle, 2022 - first spark plug, 301 - first screen speed regulation communication interface, 302 - hot air blowing communication interface, 303 - grain loss feedback device, 304 - first temperature and humidity sensor, 305 - second temperature and humidity sensor, 306 - third temperature and humidity sensor, 307 - fourth temperature and humidity sensor, 308 - sensor information processing device, 309 - central control processing device, 3010 - device information processing device, 401 - second screen, 402 - first screen, 403 - second screen eccentric wheel, 404 - double disc gear, 405 - second screen power pulley, 406 - first soybean collection stirring cage wheel, 407 - second soybean collection stirring cage wheel, 501 - grain counting plate, 502 - grain counting plate driving device, 503 - grain counting plate support, 504 - driver data line, 505 - feedback device control bus, 506 - grain counting feedback device, 507 - rack plate, 508 - mounting screw, 601 - diesel tank filler, 602 - diesel tank, 603 - hot air blowing device oil supply pipeline, 604 - harvester engine oil supply pipeline, 605 - fuel filter, 606 - electric fuel pump. DETAILED DESCRIPTION

[0065] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0066] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "front", "back", "left", "right", "up", "down", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0067] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] Figure 1 A preferred embodiment of the cleaning device is shown, which includes a screen, a speed changing device 1, a hot air blowing device 2, a control system 3, a transmission system 4, a grain loss feedback device 5, an oil supply system 6 and a temperature and humidity detection mechanism.

[0069] The screen is located on the lower side of the threshing cylinder device 7, and the screen is connected with the transmission system 4, which is used to drive the screen to vibrate; the speed changing device 1 is connected with the transmission system 4, which is used to adjust the vibration speed of the screen;

[0070] The air outlet of the hot air blowing device 2 is opposite to the bottom of the screen, and the grain loss feedback device 5 is located at the rear of the screen and is used for detecting the grain loss rate; the hot air blowing device 2 is connected with the oil supply system 6, and the oil supply system 6 is connected with an oil tank; the temperature and humidity detection mechanism is used for detecting the temperature and humidity of the crops at the air outlet of the hot air blowing device 2.

[0071] The control system 3 is connected with the variable speed device 1, the hot air blowing device 2, the transmission system 4, the grain loss feedback device 5, the oil supply system 6 and the temperature and humidity detection mechanism respectively; the control system 3 controls the variable speed device 1 and the transmission system 4 to adjust the vibration frequency of the screen according to the temperature and humidity detected by the temperature and humidity detection mechanism and the grain loss rate detected by the grain loss feedback device 5, and controls the air outlet temperature of the hot air blowing device 2.

[0072] When the humidity received by the control system 3 is higher than the preset value and the temperature is lower than the preset value, the control system 3 controls the variable speed device 1 to increase the vibration frequency of the screen and controls the hot air blowing device 2 to increase the air outlet temperature; when the grain loss detected by the grain loss feedback device 5 per unit time is higher than the preset value, the control system 3 controls the hot air blowing device 2 to increase the air outlet temperature and controls the variable speed device 1 to decrease the vibration frequency of the screen.

[0073] According to the preferred embodiment, the screen comprises a second screen 401 and a first screen 402, and the second screen 401 is located at the rear of the first screen 402.

[0074] The box body of the hot air blowing device 2 is provided with a first air outlet 201 and a second air outlet 206, the first air outlet 201 is located below the second screen 401, and the second air outlet 206 is located below the first screen 402.

[0075] The variable speed device 1 is connected with the first screen 402 and connected with the second screen 401 through the transmission system 4, and the grain loss feedback device 5 is located at the rear end of the second screen 401.

[0076] In a specific embodiment of the present application, the temperature and humidity detection mechanism comprises a first temperature and humidity sensor 304, a second temperature and humidity sensor 305, a third temperature and humidity sensor 306 and a fourth temperature and humidity sensor 307; the first temperature and humidity sensor 304 is used for detecting the temperature and humidity of the crops at the front section of the first screen 402, the second temperature and humidity sensor 305 is located at the middle rear end of the first screen 402 and is used for measuring the temperature and humidity of the crops at the second air outlet 206, the third temperature and humidity sensor 306 is located at the front section of the second screen 401 and is used for measuring the temperature and humidity of the crops at the first air outlet 201, and the fourth temperature and humidity sensor 307 is located at the middle rear section of the second screen 401 and is used for measuring the temperature and humidity of the crops after two times of air drying.

[0077] In one specific embodiment of the present application, the transmission system 4 is located in the middle of the overall device, below the threshing cylinder device 7; the transmission device 1 is located below the second screen 401 of the transmission system 4, connected to the vibration driving wheel of the second screen 401 to drive the vibration of the second screen 401; the hot air blowing device 2 is located in front of the intersection of the second screen 401 and the first screen 402, the first air outlet 201 of the hot air blowing device 2 facing the second screen 401, and the second air outlet 206 facing the first screen 402 of the transmission system 4; the control system 3 is located in the gap on the upper side of the hot air blowing device 2; the grain loss feedback device 5 is located at the rear end of the second screen 401; the oil supply system 6 is located on the other side of the transmission device 1 end of the overall device, assembled with the oil tank.

[0078] The present application is not limited to separating the moist crops after the threshing of the drum threshing device, but can also be applied to the drying of crops such as rice, wheat and other grains, and also to the drying of crops such as soybeans and other beans.

[0079] As shown in Figure 2 , 3 , 4, the transmission device 1 includes an eccentric shaft fixing frame 101, an eccentric shaft power input wheel 102, an eccentric shaft 103, an engine power input shaft 104, an eccentric shaft power receiving wheel 105, a second screen power input belt 106, a second screen power input pulley 107, a hydraulic stepless transmission box 108, a first screen eccentric sleeve 109, a hydraulic oil pipe 1010, a hydraulic oil pump control line 1011, a hydraulic pump motor driver 1012, a hydraulic oil pump 1013 and an eccentric wheel 1014.

[0080] The engine power input wheel 104 is the main power source of the variable speed device 1, connected with the hydraulic stepless gearbox 108; the second screen power input belt 106 cooperates with the second screen power input pulley 107 to transmit power to the second screen 401; the eccentric shaft power receiving wheel 105 is installed on the output shaft of the hydraulic stepless gearbox 108 and rotates together with the second screen power input pulley 107; the eccentric shaft power input wheel 102 is installed on the eccentric shaft 103, which is installed on the eccentric shaft fixing frame 101; the eccentric shaft power input wheel 102 is engaged with the eccentric shaft power receiving wheel 105; power is input from the engine power input wheel 104 and output from the eccentric shaft power receiving wheel 105; part of the power is transmitted to the second screen 401 through the second screen power input pulley 107, and part of the power is transmitted to the eccentric shaft 103 through the eccentric shaft power input wheel 102; the eccentric shaft 103 is provided with an eccentric wheel 1014, and the first screen eccentric sleeve 109 is connected with the eccentric wheel 1014 in a nested manner; the first screen eccentric sleeve 109 is connected with the first screen 402; the hydraulic oil pump 1013 is connected with the hydraulic stepless gearbox 108 through the hydraulic oil pipe 1010 to achieve the speed control of the hydraulic stepless gearbox 108 by the hydraulic oil pump 1013.

[0081] The hydraulic pump motor driver 1012 is connected with the hydraulic oil pump 1013 and the control system 3 through the hydraulic oil pump control line 1011; the hydraulic oil pump control line 1011 is a control device of the motor of the hydraulic oil pump 1013, connected with the hydraulic pump motor driver 1012, and further connected with the device information processing device 3010 of the control system 3.

[0082] The variable speed device 1 is in a hydraulic drive form, connected with the device information processing device 3010 of the control system 3 through the hydraulic oil pump control line 1011, and connected with the hydraulic pump motor driver 1012 and the hydraulic oil pump 1013 on the other side, so as to achieve the control of the hydraulic oil pump 1013 by the control system 3; the hydraulic oil pump 1013 is connected with the hydraulic stepless gearbox 108 through the hydraulic oil pipe 1010; the control of the hydraulic oil pump 1013 by the control system 3 is converted into the control adjustment of the hydraulic stepless gearbox 108; the vibration speed of the second screen 401 and the first screen 402 can be controlled simultaneously through the variable speed device 1 and the transmission system 4.

[0083] The first combustion cavity shell 2023 is provided with through holes and is an intermediate component cooperated with the oil injection device in the first air outlet 201 and the first air outlet heat insulation plate 2019 in a nested manner; the second combustion cavity shell 2024 is an intermediate component cooperated with the oil injection device in the second air outlet 206 and the second air outlet heat insulation plate 208 in a nested manner.

[0084] As Figure 3 ,4 As shown, the hydraulic continuously variable transmission 108 includes a driving wheel conical fixed wheel 108-1, a driven wheel conical fixed wheel 108-2, a driven wheel conical hydraulic wheel 108-3, a lubrication system 108-4, a metal belt 108-5, a hydraulic cavity 108-6, and a driving wheel conical hydraulic wheel 108-7. The driving wheel conical fixed wheel 108-1 and the driving wheel conical hydraulic wheel 108-7 are coaxially coupled to form a driving wheel assembly, and the driven wheel conical fixed wheel 108-2 and the driven wheel conical hydraulic wheel 108-7 are coaxially coupled to form a driving wheel assembly. 3. The driven wheel set is formed by coaxial cooperation; the driving wheel set and the driven wheel set are connected by a metal belt 108-5 for transmission; the lubrication system 108-4 is located on the housing of the hydraulic continuously variable transmission 108; the hydraulic cavity 108-6 is connected to the hydraulic oil pipe 1010 and communicates with the driven wheel conical hydraulic wheel 108-3 and the driving wheel conical hydraulic wheel 108-7, and can push the driven wheel conical hydraulic wheel 108-3 and the driving wheel conical hydraulic wheel 108-7 to adjust the transmission ratio between the driving wheel set and the driven wheel set;

[0085] The hydraulic continuously variable transmission 108 uses a hydraulic pump 1013 to adjust the driven conical hydraulic wheel 108-3 and the driving conical hydraulic wheel 108-7. When the driving conical hydraulic wheel 108-7 moves away from the driving conical fixed wheel 108-1, the driven conical hydraulic wheel 108-3 moves closer to the driven conical fixed wheel 108-2, and vice versa. The meshing distance between the driving and driven wheel sets is always kept in harmony with the metal belt 108-5, thus achieving the meshing radius r between the driving and driven wheel sets. 主 With r 从 The sum remains unchanged;

[0086] The driving wheel assembly consists of a driving wheel conical fixed wheel 108-1 and a driving wheel conical hydraulic wheel 108-7, and the driven wheel assembly consists of a driven wheel conical fixed wheel 108-2 and a driven wheel conical hydraulic wheel 108-3.

[0087] The speed change method of the speed change device 1 is as follows: by changing the meshing radius r between the driving wheel set and the driven wheel set. 主 With r 从 This changes the transmission ratio of the metal belt 108-5, at which point the transmission ratio of the hydraulic continuously variable transmission 108 is:

[0088] like Figure 5 , 6 As shown in 7, 8, 9, 10, 11, and 18, the hot air blower 2 also includes a power unit, a rotating fan blade 209, a rotating fan blade shaft 2010, a first oil injection device, a second oil injection device, a first combustion chamber shell 2023, a second combustion chamber shell 2024, a first spark plug 2022, and a second spark plug 2014.

[0089] The power equipment is connected with the first oil injection device, the second oil injection device, the oil supply system 6 and the control system 3 respectively;

[0090] The rotating fan blade 209 and the rotating fan shaft 2010 are arranged in the box body, the driving mechanism is connected with the rotating fan shaft 2010 through a transmission mechanism, and the rotating fan blade 209 is installed on the rotating fan shaft 2010;

[0091] The first oil injection device is arranged in the first air outlet 201, the first oil injection device comprises a first diesel oil atomizing plate 2020, a first air outlet oil injection nozzle 2021, the first air outlet oil injection nozzle 2021 is arranged on the first diesel oil atomizing plate 2020, a first combustion cavity shell 2023 is sleeved on the first diesel oil atomizing plate 2020, a plurality of through holes are arranged on the first combustion cavity shell 2023, and a first spark plug 2022 is used for igniting atomized fuel in the first combustion cavity shell 2023.

[0092] The second oil injection device is arranged in the second air outlet 206, the second oil injection device comprises a second diesel oil atomizing plate 2012, a second air outlet oil injection nozzle 2011, the second air outlet oil injection nozzle 2011 is arranged on the second diesel oil atomizing plate 2012, a second combustion cavity shell 2024 is sleeved on the second diesel oil atomizing plate 2012, a plurality of through holes are arranged on the second combustion cavity shell 2024, and a second spark plug 2014 is used for igniting atomized fuel in the second combustion cavity shell 2024.

[0093] According to the embodiment, preferably, the first air outlet heat insulation plate 2019 and the second air outlet heat insulation plate 208 are further included;

[0094] The first air outlet heat insulation plate 2019 is arranged in the first air outlet 201 and located at the side of the first combustion cavity shell 2023 and opposite to the first air outlet oil injection nozzle 2021, and the second air outlet heat insulation plate 208 is arranged in the second air outlet 206 and located at the side of the second combustion cavity shell 2024 and opposite to the second air outlet oil injection nozzle 2011.

[0095] The power equipment comprises a diesel oil pump 202, a driving device 203, a motor driving device control line 204, an oil inlet pipe 205 and a diesel engine 207; the diesel oil pump 202 is provided with the oil inlet pipe 205, and the diesel oil pump 202 is connected with the driving device 203 and the control system 3 through the motor driving device control line 204; the oil inlet pipe 205 is connected with the oil supply system 6, diesel oil of the harvester is introduced into the diesel oil pump 202, and the diesel oil pump 202 is connected with the second air outlet oil injection nozzle 2011, the first air outlet oil injection nozzle 2021 and the diesel engine 207 through oil pipes respectively; the second spark plug 2014 and the first spark plug 2022 are connected with the driving device 203 respectively;

[0096] The transmission mechanism comprises a rotating fan blade power wheel 2015, a diesel engine belt 2016, and a diesel engine pulley 2017. The output shaft of the diesel engine 207 is connected with the diesel engine pulley 2017, the diesel engine pulley 2017 is connected with the rotating fan blade power wheel 2015 through the diesel engine belt 2016, power is transmitted to the rotating fan blade shaft 2010 to drive the rotation of the rotating fan blade 209; the diesel pump 202 introduces oil into the second air outlet oil injection nozzle 2011 and the first air outlet oil injection nozzle 2021 and the diesel engine 207 and atomizes through the second diesel atomizing plate 2012 and the first diesel atomizing plate 2020; the diesel engine 207 transmits power to the rotating fan blade shaft 2010 through the diesel engine pulley 2017, the diesel engine belt 2016 and the rotating fan blade power wheel 2015 to drive the rotation of the rotating fan blade 209.

[0097] In one specific embodiment of the present application, the first air outlet 201 is located at the right end of the hot air blowing device 2, and the second air outlet 206 is located at the upper end; the diesel pump 202, the diesel pump motor and driving device 203, the motor driving device control line 204, and the oil inlet pipe 205 are located between the two air outlets of the hot air blowing device 2; the oil inlet pipe 205 introduces the diesel oil of the harvester from the oil supply system 6 into the diesel pump 202, and the diesel pump 202 introduces the oil into the second air outlet oil injection nozzle 2011, the second diesel atomizing plate 2012, the first diesel atomizing plate 2020, the first air outlet oil injection nozzle 2021, and the small diesel engine 207 through the oil pipe connection; the small diesel engine 207 transmits power to the rotating fan blade shaft 2010 through the rotating fan blade power wheel 2015, the diesel engine belt 2016, and the diesel engine pulley 2017 to drive the rotation of the rotating fan blade 209; the second spark plug 2014 and the first spark plug 2022 are connected with the diesel pump motor and driving device 203 through the circuit; the second air outlet heat insulation plate 208 and the first air outlet heat insulation plate 2019 are opposite to the oil injection nozzle and are installed in the box; the rotating fan blade mounting device 2018 is used to fix the rotating fan blade shaft 2010 of the hot air blowing device 2; a plurality of rotating fan blades 209 are welded on the rotating fan blade shaft 2010; the motor driving device control line 204 connected from the diesel pump motor and driving device 203 is connected with the device information processing device 3010 of the control system 3;

[0098] The hot air blowing device 2 is provided with two air outlets, namely the first air outlet 201 and the second air outlet 206, which can dry the moist crops on the second screen 401 and the first screen 402;

[0099] The first air outlet nozzle 2021 and the second air outlet nozzle 2011 of the hot air blowing device 2 can be controlled by the diesel pump motor and the driving device 203 to control the fuel injection amount of each air outlet, and the air outlet temperature of the two air outlets can be adjusted independently.

[0100] The combustion mode of the hot air blowing device 2 is as follows:

[0101] The first air outlet nozzle 2021 sprays fuel into the cavity formed by the fuel injection device and the first air outlet heat insulation plate 2019, and the first spark plug 2022 ignites the fuel;

[0102] The second air outlet nozzle 2011 sprays fuel into the cavity formed by the fuel injection device and the second air outlet heat insulation plate 208, and the second spark plug 2014 ignites the fuel;

[0103] The first air outlet nozzle 2021 and the second air outlet nozzle 2011 of the hot air blowing device 2 can be controlled by the diesel pump motor and the driving device 203 to control the fuel injection amount of each air outlet, and the air outlet temperature of the two air outlets can be adjusted independently.

[0104] The heating mode of the hot air blowing device 2 is as follows: diesel heating devices are arranged at the middle and rear parts of the first air outlet 201 and the second air outlet 206, and in the working process, the first spark plug 2022 and the second spark plug 2014 ignite the diesel oil atomized by the first diesel atomization plate 2020 and the second diesel atomization plate 2012 through the first air outlet nozzle 2021 and the second air outlet nozzle 2011, so as to heat the blown air.

[0105] The second spark plug 2014 and the first spark plug 2022 are connected to the driving device 203 respectively; the rotating fan blade shaft 2010 is installed on the rotating fan blade mounting device 2018; a plurality of rotating fan blades 209 are welded on the rotating fan blade shaft 2010; the first combustion cavity shell 2023 is full of through holes, and is an intermediate component matched with the fuel injection device and the first air outlet heat insulation plate 2019 in the first air outlet 201, and the three are connected in a nested form; the second combustion cavity shell 2024 is an intermediate component matched with the fuel injection device and the second air outlet heat insulation plate 208 in the second air outlet 206, and the three are also connected in a nested form.

[0106] As Figure 12 , 13, 17, in a specific embodiment of the present application, the control system 3 comprises a first screen speed communication interface 301, hot air blowing communication interface 302, grain loss feedback device 303, sensor information processing device 308, central processing device 309, device information processing device 3010; the first screen speed communication interface 301, hot air blowing communication interface 302, grain loss feedback device 303 on the device information processing device 3010 are connected with the variable speed device 1, hot air blowing device 2 and grain loss feedback device 5 respectively; the sensor information processing device 308 is connected with the first temperature and humidity sensor 304, the second temperature and humidity sensor 305, the third temperature and humidity sensor 306, the fourth temperature and humidity sensor 307; the sensor information processing device 308 and the device information processing device 3010 are connected with the central processing device 309;

[0107] The control system 3 processes the parameters of the variable speed device 1, hot air blowing device 2, grain loss feedback device 5 and first temperature and humidity sensor 304, second temperature and humidity sensor 305, third temperature and humidity sensor 306, fourth temperature and humidity sensor 307 through sensor information processing device 308 device information processing device 3010 respectively, and then transmits the processed data into the central processing device 309, which improves the independence and stability of the control system.

[0108] The control system 3 adjusts the sensor measurement parameters and the speed of the variable speed device 1 and the wind temperature of the hot air blowing device 2: the data of the first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 can be used to adjust the wind temperature of the second air outlet 206 and the vibration frequency of the first screen 402 and the second screen 401, while the third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 are only used to adjust the wind temperature on the second screen 401.

[0109] The variable speed device 1, hot air blowing device 2, grain loss feedback device 5 and first temperature and humidity sensor 304, second temperature and humidity sensor 305, third temperature and humidity sensor 306, fourth temperature and humidity sensor 307 are connected with the sensor information processing device 308 and the device information processing device 3010 on the control system 3, and the overall adjustment mode of the control system 3 is:

[0110] When the first humidity sensor 304, the second humidity sensor 305, the third humidity sensor 306 and the fourth humidity sensor 307 monitor that the humidity of the wet crops on the first screen 402 and the second screen 401 is high and the temperature is low, the control system 3 adjusts the variable speed device 1 so that the vibration speed of the first screen 402 and the second screen 401 becomes fast, the control system 3 adjusts the hot air blowing device 2 to increase the oil pressure of the diesel pump 202, so that the oil amount of the first air outlet nozzle 2021 and the second air outlet nozzle 2011 is increased, and the air temperature is increased; when the grain loss of the grain loss feedback device 5 is too much in unit time, the control system 3 will increase the temperature of the hot air blowing device 2 and reduce the transmission ratio of the variable speed device 1, so that the vibration speed of the first screen 402 and the second screen 401 is reduced.

[0111] According to the temperature and humidity of the four vibration stages of the crops, the variable speed device 1, the hot air blowing device 2 and the grain loss feedback device 5 are adjusted, and the grain loss feedback device 5 is used as a negative feedback to limit the variable speed device 1, the hot air blowing device 2 and the grain loss feedback device 5, so that the crops can adapt to the drying of the wet crops with different humidity and temperature at different vibration speeds, the situation that the hot air blowing device 2 excessively heats the wet crops is avoided, and the loss of the crops is reduced due to the feedback of the grain loss feedback device 5.

[0112] As shown in Figure 14 The transmission system 4 comprises a second screen eccentric wheel 403 and a second screen power pulley 405; the second screen power pulley 405 is connected with the second screen power input pulley 107 on the variable speed device 1 through belt transmission; and the second screen eccentric wheel 403 is connected with the second screen 401 through a connecting rod.

[0113] In an embodiment of the present application, a double-disc gear 404 is further included, which is connected with the second screen eccentric wheel 403 and a first collection cage wheel 406 in a chain transmission mode; the first collection cage wheel 406 is further connected with a second collection cage wheel 407 in a belt transmission mode; and the double-disc gear 404 and the first collection cage wheel 406 are both double-row gears, which can be driven by two chain wheels.

[0114] As shown in Figure 15As shown, in one embodiment of the present invention, the grain loss feedback device 5 includes a grain counting plate 501, a grain counting plate drive device 502, a grain counting plate bracket 503, a driver data line 504, a feedback device control bus 505, a grain counting feedback device 506, a frame plate 507, and mounting screws 508. The grain counting plate 501 and the grain counting plate bracket 503 are connected by welding. The grain counting plate drive device 502 is located behind the grain counting plate 501 and is connected to the grain counting feedback device 506 by the driver data line 504. The frame plate 507 is welded to the harvester frame, and the mounting screws 508 install the grain counting plate bracket 503 on the harvester. The feedback device control bus 505 can be connected to the device information processing device 3010 of the control system 3 to transmit data to the control system 3.

[0115] The counting method of the grain counting plate 501 of the grain loss feedback device 5 is as follows:

[0116] The grain loss feedback device 5 is installed in the form of vibration isolation. When the crop grains hit the grain counting plate 501 within a unit time, the grain counting plate drive device 502 will count and feed the parameters back to the grain counting feedback device 506 through the driver data line 504. The grain counting feedback device 506 will display the number of grains lost within a unit time and feed the parameters back to the control system 3.

[0117] like Figure 16 As shown, in one embodiment of the present invention, the fuel supply system 6 includes a diesel tank filler port 601, a diesel tank 602, a hot air blower fuel supply line 603, a harvester engine fuel supply line 604, a fuel filter 605, and an electric fuel pump 606; the diesel tank filler port 601 is the filler port of the diesel tank 602; the fuel filter 605 is connected to the electric fuel pump 606 by a fuel line, and the electric fuel pump 606 is located inside the diesel tank 602; the hot air blower fuel supply line 603 is the fuel supply line of the hot air blower 2 and is connected to the fuel inlet pipe 205; the harvester engine fuel supply line 604 is the fuel supply line of the engine of the integrated harvester.

[0118] A control method for the cleaning device includes the following steps:

[0119] The transmission system 4 drives the screen to vibrate; the air outlet of the hot air blower 2 blows air towards the bottom of the screen.

[0120] The grain loss feedback device 5 detects the grain loss rate of the sieve.

[0121] The temperature and humidity detection mechanism detects the temperature and humidity of the crops at the outlet of the hot air blower 2;

[0122] The control system 3 controls the variable speed device 1 and the transmission system 4 to adjust the vibration frequency of the screen according to the temperature and humidity detected by the temperature and humidity detection mechanism and the grain loss rate detected by the grain loss feedback device 5, and controls the hot air blowing device 2 to adjust the air temperature.

[0123] When the humidity received by the control system 3 is higher than the preset value and the temperature is lower than the preset value, the control system 3 controls the variable speed device 1 to increase the vibration frequency of the screen and controls the hot air blowing device 2 to increase the air temperature; when the grain loss detected by the grain loss feedback device 5 per unit time is higher than the preset value, the control system 3 controls the hot air blowing device 2 to increase the air temperature and controls the variable speed device 1 to decrease the vibration frequency of the screen.

[0124] Preferably, the grain loss feedback device 5 is started first, and when the crop loss per unit time monitored by the grain loss feedback device 5 is greater than the preset range, the control system 3 is started to scan the data of the temperature and humidity detection mechanism one by one, the temperature and humidity detection mechanism on the first screen 402 on the second air outlet 206 is scanned first, if the temperature and humidity is higher than the preset range, the air temperature of the second air outlet 206 of the hot air blowing device 2 is decreased, otherwise the air temperature of the second air outlet 206 of the hot air blowing device 2 is gradually increased to the maximum value within the preset range, then the temperature and humidity of the temperature and humidity detection mechanism on the second screen 401 on the first air outlet 201 is scanned, if the temperature and humidity is higher than the preset range, the air temperature of the first air outlet 201 is decreased, the vibration frequency of the screen is not adjusted, if the temperature and humidity is lower than the preset value, the air temperature of the second air outlet 206 is decreased, and the vibration frequency of the first screen 402 is also decreased, the grain loss feedback device 5 monitors the loss in real time during the process; when the crop loss per unit time monitored by the grain loss feedback device 5 is within the preset range, the control system 3 is started to scan the data of the temperature and humidity detection mechanism one by one, at this time, only the temperature detected by the temperature and humidity detection mechanism is adjusted, and the preset vibration frequency is used for operation: the temperature and humidity detection mechanism on the first screen 402 is detected first, when the detected humidity is greater than the preset value, the drying temperature of the second air outlet 206 is increased, and the vibration frequency of the screen is increased, then the temperature and humidity of the second screen 401 is judged whether it matches the preset vibration frequency of the screen, if it matches, the air outlet temperature is maintained, if it does not match, the air temperature of the first air outlet 201 is increased.

[0125] As shown in FIG. 6, in one specific embodiment of the present application, the control process is as follows: Figure 17

[0126] ​The seed loss feedback device 5 is first started to monitor whether the crop loss in the current state per unit time is too large to make a judgment. When the crop loss per unit time monitored by the seed loss feedback device 5 is greater than the preset range, the control system 3 is started to scan the data of the sensors such as the first temperature and humidity sensor 304, the second temperature and humidity sensor 305, the third temperature and humidity sensor 306, and the fourth temperature and humidity sensor 307 one by one. The third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 on the first screen 402 of the second air outlet 206 are scanned first to determine whether the temperature and humidity of the third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 are too high relative to the set range. If they are too high, the air outlet temperature of the second air outlet 206 of the hot air blowing device 2 is lowered. Otherwise, the maximum value of the air outlet temperature of the second air outlet 206 of the hot air blowing device 2 within the preset range of gradually increasing is taken. Then the first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 of the second screen 401 of the first air outlet 201 are scanned to determine whether the temperature and humidity of the first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 are too high relative to the set range. When they are not too high, only the air temperature of the first air outlet 201 is lowered, and the vibration speed of the screen is not adjusted. If the temperature and humidity of the first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 are too high, the air outlet temperature of the second air outlet 206 is lowered in time, and the vibration speed of the first screen 402 is also lowered. The seed loss feedback device 5 also monitors the loss during this process to ensure whether the process of each device needs to be adjusted next time. When the crop loss per unit time monitored by the seed loss feedback device 5 is within the preset range, the control system 3 is started to scan the data of the sensors such as the first temperature and humidity sensor 304, the second temperature and humidity sensor 305, the third temperature and humidity sensor 306, and the fourth temperature and humidity sensor 307 one by one. At this time, only the temperature of the temperature and humidity sensor is adjusted, and the screen is operated at an appropriate vibration speed. The process is as follows: after scanning one by one, the third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 of the first screen are monitored. When the humidity is too large, the air drying temperature of the second air outlet 206 is increased, and the vibration speed of the screen is appropriately increased (due to the transmission relationship between the first screen 402 and the second screen 401, the speed of the first screen 402 is increased, and the speed of the second screen 401 is also appropriately increased). Then the temperature and humidity of the second screen are judged again to determine whether they match the preset screen vibration speed. If they match, the air outlet temperature is maintained. If they do not match, the air temperature of the first air outlet 201 is increased.

[0127] In the present application, when the grain loss feedback device 5 is set, the screen vibration speed can be forced to adjust to a lower speed, and the wind temperature at both ends is dried at the highest wind temperature, that is, the vibration speed is reduced, and the high temperature is processed to reduce the grain loss. When there is no grain loss feedback device 5, the control system 3 will only adjust the screen vibration frequency and the wind temperature of the two air outlets according to the detected temperature and humidity. The first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 of the second screen 401 are used as the basis for effect adjustment and feedback to the control system 3.

[0128] Specifically, after the crops are threshed by the threshing cylinder device 7, the grains mixed with moisture and impurities will fall into the first screen 402 on the transmission system 4. The third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 on the first screen 402 will conduct the first round of temperature and humidity monitoring on the wet crops. When the third temperature and humidity sensor 306 and the fourth temperature and humidity sensor 307 monitor that the humidity of the wet crops is high and the temperature is low, the control system 3 will increase the oil injection amount of the second air outlet oil injection nozzle 2011 on the second air outlet 206 of the hot air blowing device 2 to increase the wind temperature blown by the hot air blowing device 2. At the same time, the transmission ratio of the hydraulic oil pump 1013 of the variable speed device 1 to the hydraulic stepless gearbox 108 is adjusted to increase the transmission ratio to increase the vibration speed of the second screen 401 and the first screen 402 through the transmission system 4. Increasing the wind temperature of the hot air blowing device 2 and the vibration speed of the vibrating screen can increase the contact between warm air and wet crops, greatly improving the separation of wet crops and moisture. When the monitored temperature and humidity of the wet crops are low and close to normal temperature, the control system 3 will adjust the speed of the variable speed device 1 and the wind temperature of the hot air blowing device 2 in the opposite direction.

[0129] When the first temperature and humidity sensor 304 and the second temperature and humidity sensor 305 monitor the humidity and temperature of the wet crops on the second screen 401, the same analysis will be conducted as the parameters of the wet crops on the first screen 402. In order not to affect the main separation function of the first screen for wet crops, the detected temperature and humidity on the second screen 401 is only used to feedback and adjust the oil injection amount of the first air outlet oil injection nozzle 2021 on the first air outlet 201 of the hot air blowing device 2 to adjust the wind temperature of the first air outlet 201.

[0130] The grain loss feedback device 5 measures the crop loss amount in unit time as a horizontal parameter for the control system 3 to adjust the speed of the variable speed device 1 and the wind temperature of the hot air blowing device 2, when the crop loss amount is too large, the control system 3 will reduce the speed of the variable speed device 1, and will increase the wind temperature of the first air outlet 201 and the second air outlet 206 of the hot air blowing device 2, appropriately reduce the speed of the wet crop pushing forward, and appropriately increase the wind temperature to improve the wind temperature effect, so as to reduce the crop loss amount, but when the crop loss amount is very low, the loss amount of the grain loss feedback device 5 does not adjust the control system 3, and the grain loss feedback device 5 only monitors the crop loss effect, and when the loss amount is low, the sensor monitoring data is processed.

[0131] When the present application works, the threshing cylinder device 7 will perform threshing treatment on the obtained crops, and the threshed crops, small straws and the like are mixed and dropped into the first screen 402, and the vibration of the first screen 402 will send the filtered crops, small straws and the like to the second screen 401 for second complete filtering; the control system 3 is provided with a temperature and humidity detection mechanism at the corresponding positions of the first screen 402 and the second screen 401, because the received crops are mixed with a large amount of moisture, causing the crops and small straws to be mutually adhered, the control system 3 adjusts the hot air temperature of the two air outlets of the hot air blowing device 2 according to the mixed crop temperature and humidity monitored by the temperature and humidity detection mechanism on the first screen 402 and the second screen 401, to adapt to the separation of mixed crops with different humidity; at the same time, in order to improve the separation effect of the mixed crops adhered due to moisture by the machine, the control system 3 also controls the screen variable speed device 1 to adjust the vibration frequency of the two screens through the monitoring of the temperature and humidity detection mechanism, when the humidity is high, the vibration frequency is increased, the convection effect of the mixed crops and the hot air is improved, and the separation effect is improved; at the same time, the grain loss feedback device 5 monitors the crop loss amount of the mixed crops, when the crop loss is too large, the vibration frequency of the device screen and the wind temperature of the hot air blowing device 2 need to be adjusted, which greatly improves the separation effect of the mixed crops with high moisture.

[0132] A harvester comprising the cleaning device has the above beneficial effects, which will not be described here.

[0133] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be combined to form other embodiments that those skilled in the art can understand.

[0134] The above detailed description merely illustrates feasible embodiments of the present application, and is not intended to limit the protection scope of the present application, and equivalent embodiments or changes made without departing from the spirit of the present application shall be included in the protection scope of the present application.

Claims

1. A cleaning device, characterized in that The screen, the variable speed device (1), the hot air blowing device (2), the control system (3), the transmission system (4), the grain loss feedback device (5), the oil supply system (6) and the temperature and humidity detection mechanism are included. The screen is located at the lower side of the threshing cylinder device (7), and the screen is connected with the transmission system (4), which is used for driving the screen to vibrate. The variable speed device (1) is connected with the transmission system (4), which is used for adjusting the vibration speed of the screen. The air outlet of the hot air blowing device (2) is opposite to the bottom of the screen, and the hot air blowing device (2) is connected with the oil supply system (6). The temperature and humidity detection mechanism is used for detecting the temperature and humidity of crops at the air outlet of the hot air blowing device (2). The control system (3) is connected with the variable speed device (1), the hot air blowing device (2), the transmission system (4), the grain loss feedback device (5), the oil supply system (6) and the temperature and humidity detection mechanism respectively. When the humidity received by the control system (3) is higher than the preset value and the temperature is lower than the preset value, the control system (3) controls the variable speed device (1) to increase the vibration frequency of the screen and controls the hot air blowing device (2) to increase the air outlet temperature. The screen includes a second screen (401) and a first screen (402). The second screen (401) is located behind the first screen (402). The box body of the hot air blowing device (2) is provided with a first air outlet (201) and a second air outlet (206). The variable speed device (1) is connected with the first screen (402) and connected with the second screen (401) through the transmission system (4). The grain loss feedback device (5) is located at the rear end of the second screen (401). The temperature and humidity detection mechanism comprises a first temperature and humidity sensor (304), a second temperature and humidity sensor (305), a third temperature and humidity sensor (306) and a fourth temperature and humidity sensor (307); the first temperature and humidity sensor (304) is used for detecting the temperature and humidity of the crops in the front section of the first screen (402), the second temperature and humidity sensor (305) is located at the rear end of the first screen (402) and is used for measuring the temperature and humidity of the crops at the second air outlet (206), the third temperature and humidity sensor (306) is located at the front section of the second screen (401) and is used for measuring the temperature and humidity of the crops at the first air outlet (201), and the fourth temperature and humidity sensor (307) is located at the middle rear section of the second screen (401) and is used for measuring the temperature and humidity of the crops after being dried twice.

2. The cleaning apparatus of claim 1, wherein, The variable speed device (1) comprises an eccentric shaft fixing frame (101), an eccentric shaft power input wheel (102), an eccentric shaft (103), an engine power input shaft (104), an eccentric shaft power receiving wheel (105), a second screen power input belt (106), a second screen power input pulley (107), a hydraulic stepless gearbox (108), a first screen eccentric sleeve (109), a hydraulic oil pipe (1010), a hydraulic oil pump control line (1011), a hydraulic pump motor driver (1012), a hydraulic oil pump (1013) and an eccentric wheel (1014); The engine power input shaft (104) is connected with the hydraulic stepless gearbox (108); the second screen power input belt (106) is matched with the second screen power input pulley (107) to transmit power into the second screen (401); the eccentric shaft power receiving wheel (105) and the second screen power input pulley (107) are installed on the output shaft of the hydraulic stepless gearbox (108) and rotate together; the eccentric shaft power input wheel (102) is installed on the eccentric shaft (103), the eccentric shaft (103) is installed on the eccentric shaft fixing frame (101), the eccentric shaft power input wheel (102) is engaged with the eccentric shaft power receiving wheel (105); power is input from the engine power input shaft (104) and output from the eccentric shaft power receiving wheel (105), part of the power is transmitted to the second screen (401) through the second screen power input pulley (107), and part of the power is transmitted to the eccentric shaft (103) through the eccentric shaft power input wheel (102), the eccentric shaft (103) is provided with the eccentric wheel (1014), the first screen eccentric sleeve (109) is connected with the eccentric wheel (1014), and the first screen eccentric sleeve (109) is connected with the first screen (402); the hydraulic oil pump (1013) is connected with the hydraulic stepless gearbox (108) through the hydraulic oil pipe (1010); The hydraulic pump motor driver (1012) is connected with the hydraulic oil pump (1013) and the control system (3) respectively. The transmission system (4) comprises a second screen eccentric wheel (403) and a second screen power pulley (405); the second screen power pulley (405) is connected with the second screen power input pulley (107) on the transmission (1) through belt transmission; the second screen eccentric wheel (403) is connected with the second screen (401) through a connecting rod.

3. The cleaning apparatus of claim 1, wherein, The hot air blowing device (2) further comprises a power device, a rotating fan blade (209), a rotating fan blade shaft (2010), a first oil injection device, a second oil injection device, a first combustion cavity shell (2023), a second combustion cavity shell (2024), a first spark plug (2022) and a second spark plug (2014); The power device is connected with the first oil injection device, the second oil injection device, an oil supply system (6) and a control system (3) respectively; The rotating fan blade (209) and the rotating fan blade shaft (2010) are arranged in the box body, a driving mechanism is connected with the rotating fan blade shaft (2010) through a transmission mechanism, and the rotating fan blade (209) is installed on the rotating fan blade shaft (2010); The first oil injection device is arranged in the first air outlet (201), the first oil injection device comprises a first diesel oil atomization plate (2020) and a first air outlet oil injection nozzle (2021), the first air outlet oil injection nozzle (2021) is arranged on the first diesel oil atomization plate (2020), the first combustion cavity shell (2023) is sleeved on the first diesel oil atomization plate (2020), a plurality of through holes are arranged on the first combustion cavity shell (2023), and the first spark plug (2022) is used for igniting atomized fuel in the first combustion cavity shell (2023); The second oil injection device is arranged in the second air outlet (206), the second oil injection device comprises a second diesel oil atomization plate (2012) and a second air outlet oil injection nozzle (2011), the second air outlet oil injection nozzle (2011) is arranged on the second diesel oil atomization plate (2012), the second combustion cavity shell (2024) is sleeved on the second diesel oil atomization plate (2012), a plurality of through holes are arranged on the second combustion cavity shell (2024), and the second spark plug (2014) is used for igniting atomized fuel in the second combustion cavity shell (2024).

4. The cleaning apparatus of claim 3, wherein, Further comprising a first air outlet heat insulation plate (2019) and a second air outlet heat insulation plate (208); The first air outlet heat insulation plate (2019) is arranged in the first air outlet (201) and located on the side of the first combustion cavity shell (2023) and opposite to the first air outlet oil injection nozzle (2021), and the second air outlet heat insulation plate (208) is arranged in the second air outlet (206) and located on the side of the second combustion cavity shell (2024) and opposite to the second air outlet oil injection nozzle (2011).

5. The cleaning apparatus of claim 3, wherein, The power equipment comprises a diesel pump (202), a driving device (203), a motor driving device control line (204), an oil inlet pipe (205), and a diesel engine (207); the diesel pump (202) is provided with the oil inlet pipe (205), and the diesel pump (202) is connected with the driving device (203) and a control system (3) through the motor driving device control line (204); the oil inlet pipe (205) is connected with an oil supply system (6), diesel oil of the harvester is introduced into the diesel pump (202), and the diesel pump (202) is connected with a second gas outlet injection nozzle (2011), a first gas outlet injection nozzle (2021) and the diesel engine (207) through oil pipes; the second spark plug (2014) and the first spark plug (2022) are connected with the driving device (203) respectively; The transmission mechanism comprises a rotating fan blade power wheel (2015), a diesel engine belt (2016) and a diesel engine belt wheel (2017); the output shaft of the diesel engine (207) is connected with the diesel engine belt wheel (2017), the diesel engine belt wheel (2017) is connected with the rotating fan blade power wheel (2015) through the diesel engine belt (2016), power is transmitted to a rotating fan blade shaft (2010) to drive the rotation of a rotating fan blade (209); the diesel pump (202) introduces oil into the second gas outlet injection nozzle (2011) and the first gas outlet injection nozzle (2021) and the diesel engine (207), and the oil is atomized through a second diesel atomizing plate (2012) and a first diesel atomizing plate (2020); the diesel engine (207) transmits power to the rotating fan blade shaft (2010) through the diesel engine belt wheel (2017), the diesel engine belt (2016) and the rotating fan blade power wheel (2015) to drive the rotation of the rotating fan blade (209).

6. A harvester characterized by The cleaning device according to any one of claims 1-5.

7. A control method of the cleaning apparatus according to any one of claims 1 to 5, characterized by The cleaning device comprises the following steps: The transmission system (4) drives the screen to vibrate; The air outlet of the hot air blowing device (2) blows air against the bottom of the screen; The grain loss feedback device (5) detects the grain loss rate of the screen; The temperature and humidity detection mechanism detects the temperature and humidity of the crops at the air outlet of the hot air blowing device (2); The control system (3) controls the variable speed device (1) and the transmission system (4) to adjust the vibration frequency of the screen and controls the air outlet temperature of the hot air blowing device (2) according to the temperature and humidity detected by the temperature and humidity detection mechanism and the grain loss rate detected by the grain loss feedback device (5); When the humidity received by the control system (3) is higher than a preset value and the temperature is lower than a preset value, the control system (3) controls the variable speed device (1) to increase the vibration frequency of the screen and controls the hot air blowing device (2) to increase the air outlet temperature; when the grain loss detected by the grain loss feedback device (5) per unit time is higher than a preset value, the control system (3) controls the hot air blowing device (2) to increase the air outlet temperature and controls the variable speed device (1) to decrease the vibration frequency of the screen. ​ 8. The control method of a cleaning apparatus according to claim 7, characterized by, First start the seed loss feedback device (5), when the crop loss amount monitored by the seed loss feedback device (5) in unit time is greater than the preset range, the control system (3) will be started to scan the data of the temperature and humidity detection mechanism one by one, first, the temperature and humidity detection mechanism on the first screen (402) of the second air outlet (206) is scanned, if the temperature and humidity is higher than the preset range, the air outlet temperature of the second air outlet (206) of the hot air blowing device (2) is reduced, otherwise the air outlet temperature of the second air outlet (206) of the hot air blowing device (2) is gradually increased to the maximum value in the preset range, then the temperature and humidity of the temperature and humidity detection mechanism of the second screen (401) on the first air outlet (201) is scanned, and it is judged whether the temperature and humidity is higher than the preset range, if not, the air temperature of the first air outlet (201) is reduced, the vibration frequency of the screen is not adjusted, if the temperature and humidity is higher than the preset value, the air outlet temperature of the second air outlet (206) is reduced, and the vibration frequency of the first screen (402) is also reduced, the seed loss feedback device (5) monitors the loss of the process in real time; When the crop loss amount monitored by the seed loss feedback device (5) in unit time is in the preset range, the control system (3) will be started to scan the data of the temperature and humidity detection mechanism one by one, at this time, only the temperature detected by the temperature and humidity detection mechanism is adjusted, and the preset vibration frequency is run: first, the temperature and humidity detection mechanism of the first screen (402) is detected, when the detected humidity is greater than the preset value, the drying temperature of the second air outlet (206) is increased, and the vibration frequency of the screen is increased, then the temperature and humidity of the second screen (401) is judged whether it matches the preset screen vibration frequency, if it matches, the air outlet temperature is kept, if it does not match, the air temperature of the first air outlet (201) is increased.

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