Grain drying equipment and method

Abstract

The present invention provides a grain drying device and method, which relates to the field of grain drying technology, including a grain drying chamber, an air intake chamber installed on the first side of the grain drying chamber, an exhaust gas purification chamber installed on the second side, a plurality of exhaust gas distribution devices connected to the exhaust gas purification chamber installed in the grain drying chamber, a plurality of exhaust gas distribution devices located on the same horizontal plane form a group of exhaust gas distribution components, an annular belt adsorption device is arranged between two adjacent exhaust gas distribution components, the first group of exhaust gas distribution components is installed on the inner side of the belt adsorption device, and the second group of exhaust gas distribution components is installed at a predetermined position below the belt adsorption device. The invention doubles the efficiency of grain drying exhaust gas treatment, has a lower failure rate, is easy to repair separately as a whole, and has a better treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of grain drying, and in particular to grain drying equipment and a method. Background Art

[0002] After harvesting, grain needs to be dried before being stored in a centralized manner to remove moisture from the grain and ensure its storage time and quality.

[0003] The grain drying equipment is an existing equipment, and its working process is mostly to pass dry gas at a certain temperature into the grain drying chamber from the first side, and discharge the grain drying exhaust gas from the second side. The dry gas completes the continuous drying of the grain during the directional flow process.

[0004] The drying exhaust gas has a high enthalpy value and contains a large amount of dust. How to settle the dust and utilize this part of the gas with high enthalpy value is a common problem faced by the grain drying industry.

[0005] The centrifugal dust reduction device can quickly reduce dust from grain drying exhaust gas, improve the exhaust gas purification effect, and reduce the frequency of cleaning; however, the equipment is large in size, requires large investment, has a general waste heat recovery rate, and has a limited scope of application.

[0006] The belt adsorption structure can efficiently adsorb dust impurities in the grain drying exhaust gas, and a cleaning structure is arranged on the moving path of the belt adsorption structure to achieve continuous treatment of dust in the drying exhaust gas. The exhaust gas treatment effect is good, the exhaust gas waste heat utilization efficiency is high, and the application range is wide.

[0007] However, in the prior art, the failure rate of a curved belt adsorption structure is relatively high. When the belt adsorption structure is partially damaged, the entire belt adsorption structure needs to be disassembled and repaired, which affects the normal and continuous drying of grain. In addition, the distribution position and adsorption surface setting of the traditional belt adsorption structure are unreasonable, which occupies the space of the exhaust gas distribution device and reduces the amount of exhaust gas treated per unit time. Summary of the invention

[0008] In view of the above problems, the present invention provides grain drying equipment and method, which can improve the efficiency of grain drying tail gas treatment by several times, and has a lower failure rate, is easy to repair separately as a whole, and has a better treatment effect.

[0009] To solve the above problems, the technical solution adopted by the present invention is:

[0010] A grain drying device comprises a grain drying chamber, wherein an air intake chamber is installed on a first side of the grain drying chamber, and an exhaust gas purification chamber is installed on a second side. A plurality of exhaust gas distribution devices connected to the exhaust gas purification chamber are installed in the grain drying chamber, and the plurality of exhaust gas distribution devices located on the same horizontal plane form a group of exhaust gas distribution components, and an annular belt adsorption device is arranged between two adjacent exhaust gas distribution components, the first group of exhaust gas distribution components is installed on the inner side of the belt adsorption device, and the second group of exhaust gas distribution components is installed at a predetermined position below the belt adsorption device; a cleaning device is also installed in the exhaust gas purification chamber, and the cleaning device comprises two cleaning ends arranged at intervals and a first control component for controlling the position status of the two cleaning ends, and during the directional movement of the belt adsorption device, the cleaning ends are controlled to abut against the surface of the belt adsorption device to complete continuous cleaning.

[0011] Preferably, the belt adsorption device includes a belt adsorption assembly, which includes a plurality of driving rollers, and a ring-shaped adsorption belt and a ring-shaped driving belt are sleeved on the outside of the plurality of driving rollers. The driving belts are provided in two numbers, and the adsorption belt is located between the two driving belts, and the adsorption belt and the driving belt are in a connected state.

[0012] Preferably, the exhaust gas distribution device includes an angle box, an exhaust gas distribution pipe is installed on the first side of the angle box, an exhaust gas distribution pipe has an exhaust gas emission opening on the side wall, a movably arranged sealing baffle is installed on the outer side of the exhaust gas emission opening, and the sealing baffle is located on the moving path of the exhaust gas emission opening and is used to control the opening and closing of the exhaust gas emission opening.

[0013] Preferably, the exhaust gas distribution device further comprises a second control component for controlling the movable position of the sealing baffle, and the first control component and the second control component are both hydraulic control elements and are in a conducting state.

[0014] Preferably, it also includes an oil control device, which includes an oil control housing and an oil control piston, the oil control piston is sealingly and slidingly connected to the inner wall of the oil control housing, and the oil control piston separates the oil control housing into a first control chamber and a second control chamber, the first control chamber is in a connected state with the second control component of the first group of exhaust gas distribution components, and the second control chamber is in a connected state with the second control component of the second group of exhaust gas distribution components.

[0015] Preferably, an oil temporary storage device is installed between the second control component and the first control component, and a three-way control valve is installed between the oil temporary storage device, the second control component and the first control component. The oil temporary storage device has a first accommodation elasticity, and the first control component has a second accommodation elasticity, wherein the first accommodation elasticity is greater than the second accommodation elasticity.

[0016] Preferably, the three-way control valve is electrically controlled to rotate, and the cleaning end includes a mounting body and a cleaning strip extending along the length direction of the mounting body. An electric control component for controlling the rotation state of the three-way control valve is arranged on the surface of the cleaning strip. The electric control component includes two conductive protrusions arranged at intervals, and the conductive protrusion is located close to the side of the mounting body.

[0017] Preferably, the first control components are two hydraulic rotating joints or two hydraulic telescopic joints.

[0018] Preferably, the exhaust gas distribution device, cleaning device and belt adsorption device are all arranged obliquely toward the first direction, and a guide plate arranged obliquely toward the first direction is installed on the inner side of the belt adsorption assembly, and a guide opening is opened on the lower side of the guide plate.

[0019] A grain drying method, using the above-mentioned grain drying equipment, includes the following steps: S1, controlling the air inlet chamber to pass dry gas into the grain drying chamber, and controlling the exhaust gas purification chamber to extract the dry exhaust gas in the grain drying chamber; S2, controlling the directional rotation of the belt adsorption device while controlling the dry exhaust gas to be blown out from the surface of the first group of exhaust gas distribution components and / or the second group of exhaust gas distribution components, and the dry exhaust gas continuously acts on the surface of the belt adsorption device to complete adsorption filtration; S3, controlling the cleaning end to abut against the surface of the belt adsorption device through the first control component to complete continuous cleaning of the adsorbed material on the surface of the belt adsorption device.

[0020] The beneficial effects of the present invention are:

[0021] Compared with the integrated curved belt structure, the segmented structural design facilitates overall maintenance and replacement, has a lower failure rate and better treatment effect; and can adaptively control the exhaust gas distribution components on both sides according to the emission status of grain exhaust gas, meeting the treatment needs of grain drying exhaust gas in different scenarios; at the same time, the optimized layout structure can reserve a larger space for installing corner boxes, and the grain drying exhaust gas treatment efficiency is doubled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure.

[0024] Figure 3 It is a schematic diagram of the internal structure of the tail gas purification box of the present invention.

[0025] Figure 4 For the present invention Figure 3 Schematic diagram of the main structure.

[0026] Figure 5For the present invention Figure 4 AA section view of the structure.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the belt-type adsorption component of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the exhaust gas distribution device of the present invention.

[0029] Figure 8 This is a schematic structural diagram of Example 1 of the cleaning device of the present invention.

[0030] Fig. 9 This is a schematic structural diagram of Example 2 of the cleaning device of the present invention.

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the tail gas purification chamber of the present invention.

[0032] Fig.11 It is a schematic diagram of the structure of the oil control device of the present invention.

[0033] In the figure: 100, grain drying chamber; 200, air intake chamber; 300, gas pumping device; 310, first pumping pipeline; 320, second pumping pipeline; 330, gas pumping body; 400, tail gas purification chamber; 410, tail gas purification box; 420, tail gas conduction box; 430, tail gas release pipe; 500, lifting device; 600, tail gas distribution device; 610, angular box; 611, side guard bar; 620, conduction pipe; 630, tail gas distribution pipe; 631, tail gas discharge opening; 640, sealing baffle; 650, second control Component; 700, belt adsorption device; 710, belt adsorption component; 711, adsorption belt; 712, drive belt; 713, drive roller; 720, guide plate; 721, guide opening; 800, cleaning device; 810, cleaning end; 811, installation body; 812, cleaning strip; 820, first control component; 821, hydraulic rotating joint; 822, hydraulic telescopic joint; 910, oil control device; 911, oil control housing; 912, oil control piston; 920, three-way control valve; 930, oil temporary storage device. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] In order to solve the above problems, refer to the attached Figure 1 -Attached Fig.11The grain drying equipment includes a grain drying chamber 100, an air inlet chamber 200 is installed on the first side of the grain drying chamber 100, and an exhaust gas purification chamber 400 is installed on the second side. A plurality of exhaust gas distribution devices 600 connected to the exhaust gas purification chamber 400 are installed in the grain drying chamber 100, and also includes a gas pumping device 300 and a lifting device 500. The dry exhaust gas on one side of the exhaust gas purification chamber 400 can be extracted through the gas pumping device 300, and the dry exhaust gas can be dried and then pumped into the air inlet chamber 200 again, so that the dry exhaust gas can be reused, the remaining heat in the dry exhaust gas can be fully utilized, and the heat loss can be reduced.

[0036] The grain can be added into the grain drying chamber 100 from the top through the lifting device 500, and the grain can be controlled to complete drying during the process of moving downward at a slow rate, thereby realizing a continuous drying process of the grain. A bottom structure for controlling the discharge of grain is installed at the lower end of the grain drying chamber 100, thereby realizing continuous automatic drying of the grain.

[0037] It is defined that a plurality of exhaust gas distribution devices 600 located on the same horizontal plane form a group of exhaust gas distribution components, and an annular belt adsorption device 700 is arranged between two adjacent exhaust gas distribution components. Each exhaust gas distribution device 600 in the exhaust gas distribution component is arranged toward the belt adsorption device 700. During the process of grain drying exhaust gas being extracted, it flows upward and contacts the surface of the belt adsorption device 700. The belt adsorption device 700 can adsorb dust in the grain drying exhaust gas to reduce the amount of dust, so as to facilitate the subsequent drying and reheating of the grain drying exhaust gas and then dry the grain again.

[0038] It should be noted that the first set of exhaust gas distribution components is installed inside the belt-type adsorption device 700, and the second set of exhaust gas distribution components is installed at a predetermined position below the belt-type adsorption device 700; Figure 4 The grain drying exhaust gas blown out by the first set of exhaust gas distribution components is directly blown toward the inner surface of the belt-type adsorption device 700, and the grain drying exhaust gas blown out by the second set of exhaust gas distribution components is directly blown toward the outer surface of the belt-type adsorption device 700;

[0039] When the dust content in the grain drying exhaust gas is low, the grain drying exhaust gas can be controlled to be blown out alternately from the two groups of exhaust gas distribution components, and the dust is alternately attached to the inner and outer surfaces of the belt adsorption device 700, and finally cleaned alternately, which can reduce the adsorption burden of the belt adsorption device 700, improve its processing efficiency, and extend the service life of the belt adsorption device 700.

[0040] When the dust content in the grain drying exhaust gas is high, the grain drying exhaust gas can be controlled to be blown out from the two groups of exhaust gas distribution components at the same time, and the dust is attached to the surfaces on both sides of the belt adsorption device 700 at the same time and cleaned at the same time. Without increasing the moving speed of the belt adsorption device 700, the treatment efficiency of the grain drying exhaust gas is improved, which meets the conditions of grain drying exhaust gas treatment under different conditions.

[0041] A cleaning device 800 is also installed in the exhaust gas purification chamber 400. The cleaning device 800 can clean the dust impurities attached to the inner and outer surfaces of the belt adsorption device 700, and can remove the attached dust in time, thereby ensuring the normal movement of the belt adsorption device 700 and ensuring that the dust treatment state on its surface is always in the best state, thereby improving the effect of grain drying exhaust gas treatment.

[0042] Specifically, the cleaning device 800 includes two cleaning ends 810 arranged at intervals and a first control component 820 for controlling the position state of the two cleaning ends 810. During the directional movement of the belt adsorption device 700, the cleaning ends 810 are controlled to abut against the surface of the belt adsorption device 700 to complete continuous cleaning.

[0043] One of the cleaning ends 810 can be controlled to press against the inner or outer surface of the belt adsorption device 700 to clean the single-side surface of the belt adsorption device 700; the two cleaning ends 810 can also be controlled by the first control component 820 to press against both sides of the belt adsorption device 700 at the same time to clean the surfaces of both sides of the belt adsorption device 700.

[0044] In summary, compared with the integrated curved belt structure, the segmented structural design is convenient for overall maintenance and replacement, with a lower failure rate and better treatment effect; and the exhaust gas distribution components on both sides can be adaptively controlled according to the emission status of the grain exhaust gas, meeting the treatment needs of grain drying exhaust gas in different scenarios; at the same time, the optimized layout structure can reserve a larger space for installing corner boxes, and the grain drying exhaust gas treatment efficiency is doubled.

[0045] Please refer to the attached Figure 5 And attached Figure 6 The belt adsorption device 700 includes a belt adsorption assembly 710, which includes a plurality of driving rollers 713. The outer sides of the plurality of driving rollers 713 are provided with an annular adsorption belt 711 and an annular driving belt 712. Two driving belts 712 are provided. The adsorption belt 711 is located between the two driving belts 712, and the adsorption belt 711 and the driving belt 712 are in a connected state, that is, the adsorption belt 711 can move synchronously with the outer driving belt 712.

[0046] The driving roller 713 here is connected to an external power source to achieve directional rotation. During the directional rotation of the driving roller 713, the driving belt 712 and the driving roller 713 can be driven to move in a directional manner. During the directional movement, the driving roller 713 can be opposite to different exhaust gas distribution devices 600. In this process, the dust and sewage mixed substances in the grain drying exhaust gas can be transported to one side of the cleaning device 800 for centralized cleaning through the adsorption belt 711.

[0047] The adsorption belt 711 here is designed to be lengthened along the width direction, which can increase the surface of dust adhesion, and at the same time, the driving belts 712 on both sides can be arranged at a farther position, reducing the impact of grain drying exhaust gas on the normal transportation of the driving belt 712.

[0048] The inner and outer surfaces of the adsorption belt 711 here can be made of special materials; wear-resistant fiber materials can be selected, and the grain drying exhaust gas can be quickly attached to the adsorption belt 711 during contact, thereby achieving rapid dust reduction during grain drying.

[0049] Please refer to the attached Figure 7 The exhaust gas distribution device 600 includes an angular box 610, along the length direction of which a strip groove is provided, and a side baffle 611 is provided on the outer side of the strip groove. When the grain moves downward, the grain is prevented from entering the angular box 610 through the strip groove, thereby ensuring the normal flow of the grain drying exhaust gas.

[0050] An exhaust gas distribution pipe 630 is installed on the first side of the angular box 610, and an exhaust gas discharge opening 631 is opened on the side wall of the exhaust gas distribution pipe 630. Under the action of the gas pressure difference, the exhaust gas of grain drying is discharged from the exhaust gas discharge opening 631, and the discharged exhaust gas adheres to the surface of the belt adsorption device 700 to achieve rapid dust reduction.

[0051] A movably arranged sealing baffle 640 is installed outside the exhaust gas discharge opening 631 . The sealing baffle 640 is located on the moving path of the exhaust gas discharge opening 631 and is used to control the opening and closing of the exhaust gas discharge opening 631 .

[0052] The sealing baffle 640 is controlled to be opposite to the exhaust gas emission opening 631, and the exhaust gas emission opening 631 is controlled to be closed to avoid the extraction of grain drying exhaust gas; the sealing baffle 640 is controlled to be staggered with the exhaust gas emission opening 631, and the grain drying exhaust gas is discharged from there at this time, and the discharged exhaust gas acts on the surface of the belt adsorption device 700 to achieve dust reduction treatment.

[0053] The opening and closing control of the exhaust gas emission opening 631 can be conveniently achieved through the mechanical structure. There is no need to install a valve inside the exhaust gas distribution pipe 630, which will not reduce the exhaust gas exhaust rate. At the same time, the sealing baffle 640 can clean part of the dust attached to the surface during its movement, thereby extending the service life of the overall structure. It is particularly suitable for use in grain drying scenarios with a large amount of dust.

[0054] Furthermore, the exhaust gas distribution device 600 also includes a second control component 650 for controlling the movable position of the sealing baffle 640. The first control component 820 and the second control component 650 are both hydraulic control elements and are in a conducting state.

[0055] The sealing baffle 640 can be controlled to deflect to an open or closed position through the second control component 650 to realize deflection control; and by controlling the second control component 650 and the first control component 820 to be in a connected state, after the sealing baffle 640 is controlled to be closed, the position state of the cleaning end 810 can be controlled by the first control component 820, that is, the cleaning end 810 is controlled to be in a state away from the surface of the belt adsorption device 700, so as to realize the automatic stop of the cleaning end 810 on this side. The two are controlled in coordination to realize adaptive adjustment control, improve control efficiency, and meet the needs of centralized control.

[0056] Similarly, after the sealing baffle 640 is controlled to be in an open state by the second control component 650, at this time, under the control of the oil, the first control component 820 can drive the cleaning end 810 to be located close to the surface of the belt adsorption device 700 to achieve adaptive cleaning.

[0057] The above-mentioned traditional hydraulic method can replace the sensor for control, which is particularly suitable for this type of dusty and complex working environment. There is no need to worry about sensor failure. The hydraulic control effect is stable and the control effect is good.

[0058] Specifically, it also includes an oil control device 910, which includes an oil control housing 911 and an oil control piston 912. The oil control piston 912 is sealed and slidably connected to the inner wall of the oil control housing 911, and the oil control piston 912 separates the oil control housing 911 into a first control chamber and a second control chamber. The oil control piston 912 here is electrically controlled to move, and the oil control piston 912 is controlled to move to different positions, which can adjust the size of the two control chambers, and then adjust the size of the oil pressure inside the two control chambers, thereby realizing adaptive adjustment and control.

[0059] The oil control piston 912 may be selected as an additional Fig.11Two of them can realize separate control of the two control chambers; the oil control piston 912 can also be selected as a single one to realize coordinated control of the two control chambers. Through the coordinated control scheme, when the first group of exhaust gas distribution components is in the exhaust state, the second group of exhaust gas distribution components is in the closed state.

[0060] The first control chamber is in communication with the second control assembly 650 of the first exhaust gas distribution assembly, and the second control chamber is in communication with the second control assembly 650 of the second exhaust gas distribution assembly.

[0061] Attach Fig.11 For example (assuming that the second control component 650 and the first control component 820 are always connected), by controlling the oil control piston 912 to move toward the right, the oil can be controlled to enter the exhaust gas distribution component on the right, thereby driving the second control component 650 and the first control component 820 on the right to perform corresponding actions, so that the sealing baffle 640 controls the exhaust gas emission opening 631 to be closed, and the first control component 820 controls the cleaning end 810 to be separated from the belt adsorption device 700.

[0062] The exhaust gas distribution component on the left side is in the opposite state. During this process, the oil enters the oil control housing 911, and the second control component 650 and the first control component 820 on the left side can be in the opposite state under the action of elasticity or oil control. The exhaust gas discharge opening 631 is opened by the second control component 650 and the sealing baffle 640, and the cleaning end 810 is controlled by the first control component 820 to be against the surface of the belt adsorption device 700 to achieve adaptive cleaning.

[0063] Through the above control method, the oil control structures of the two sets of exhaust gas distribution components can be installed in the same position, which is convenient for coordinated control and maintenance.

[0064] How to electrically control and drive the oil control piston 912 here belongs to the prior art and will not be described in detail here. Those skilled in the art can select a suitable telescopic rod or other electric structure as needed.

[0065] An oil temporary storage device 930 is also installed between the second control component 650 and the first control component 820. When the oil enters the exhaust gas distribution component on either side, the oil temporary storage device 930 can temporarily store the oil, so as to prevent the oil from quickly entering the first control component 820 to implement the action; through the above-mentioned structural design, the oil can be controlled to enter the first control component 820 after a certain period of time after the exhaust gas discharge opening 631 is closed to implement the control process. During this time, the cleaning end 810 can clean some of the residual attachments on the surface of the belt adsorption device 700, further ensuring the cleanliness of the surface of the belt adsorption device 700, so as to facilitate its subsequent adsorption of dust in the grain drying exhaust gas.

[0066] Specifically, a three-way control valve 920 is installed between the oil temporary storage device 930, the second control component 650 and the first control component 820. The oil temporary storage device 930 has a first accommodation elasticity, and the first control component 820 has a second accommodation elasticity, wherein the first accommodation elasticity is greater than the second accommodation elasticity. The above-mentioned control component with accommodation elasticity can be controlled by a combination of a spring and a piston, and the structure with large accommodation elasticity can preferentially discharge the oil inside it.

[0067] By controlling the three-way control valve 920 Fig.11 The state on the left side, at this time, the first control component 820, the oil temporary storage device 930 and the second control component 650 can be controlled to be in a conductive state. In this process, the oil control piston 912 is controlled to move outward to extract the oil in the three-way control valve 920, the first control component 820 and the second control component 650, and the three are controlled to be in the first state, that is, the sealing baffle 640 is driven by the second control component 650 to be staggered with the exhaust opening 631, and is in an exhaust state, and the cleaning end 810 is controlled by the first control component 820 to be against the surface of the belt adsorption device 700, and is in a cleaning state.

[0068] By controlling the three-way control valve 920 Fig.11 The state on the right side. At this time, since the first control component 820 on the right side is in a closed state, the oil control piston 912 can squeeze the oil in the oil control housing 911 into the second control component 650 and the oil temporary storage device 930. Controlling the oil to enter the second control component 650 can control the sealing baffle 640 to coincide with the exhaust gas discharge opening 631, which is in a closed state. At this time, the oil is temporarily stored in the oil temporary storage device 930 on the right side to avoid controlling the first control component 820 on the outside, and the cleaning end 810 continues to be controlled to be in a state of pressing against the surface of the belt adsorption device 700 to continue to achieve adaptive cleaning.

[0069] Through the control of the three-way control valve 920, the three-way control valve 920 can be switched to different states to achieve adaptive adjustment of the oil, meet the needs of the oil temporary storage device 930 for oil temporary storage control, and achieve delayed control of the cleaning end 810, thereby optimizing the control effect.

[0070] The three-way control valve 920 here is electrically controlled to rotate and adaptively controlled by an input signal; the cleaning end 810 includes a mounting body 811 and a cleaning strip 812 extending along the length direction of the mounting body 811, and the cleaning strip 812 can be arranged along the width direction of the belt adsorption device 700 to achieve adaptive cleaning of the entire size of the surface of the belt adsorption device 700.

[0071] An electric control component for controlling the rotation state of the three-way control valve 920 is disposed on the surface of the cleaning strip 812 . The electric control component includes two conductive protrusions arranged at intervals. The conductive protrusion is located on a side close to the installation body 811 .

[0072] The grain drying tail gas contains a large amount of water vapor and impurities. During the delayed cleaning process of the cleaning strip 812, there is still a certain amount of sewage on the surface of the belt adsorption device 700. During the process of the cleaning strip 812 pressing against the surface of the belt adsorption device 700, the excess sewage can conduct the two spaced conductive protrusions and output the first electrical control signal. At this time, the three-way control valve 920 is controlled to be in a state of not conducting the first control component 820. At this time, the oil will not enter the first control component 820 to change its state. The cleaning end 810 is still pressed against the surface of the belt adsorption device 700 to scrape and clean the remaining sewage mixture.

[0073] When the grain drying exhaust gas stops being discharged for a certain period of time, and the cleaning strip 812 delays scraping for a certain period of time, the wastewater on the surface of the belt adsorption device 700 is scraped off, and the surface of the belt adsorption device 700 is in a clean state. At this time, the two conductive protrusions without wastewater control intervals are in a conductive state, and the second electrical control signal is output. At this time, the three-way control valve 920 is controlled to be in a fully conductive state, and the oil in the oil temporary storage device 930 enters the first control component 820 to control the cleaning end 810 to separate from the surface of the belt adsorption device 700.

[0074] Through the above-mentioned structural design, the neat state of the surface of the belt adsorption device 700 can be cleverly utilized to control the state of the three-way control valve 920, and then control the distribution state of the oil, realize the position control of the first control component 820 and the cleaning end 810, and automatically realize the cleaning or staggering of the surface of the belt adsorption device 700. The control process is simple, efficient, and precise.

[0075] The surface of the belt adsorption device 700 can also be inspected by other visual inspection schemes, and the conduction state of the three-way control valve 920 can be controlled according to the inspection results to achieve adaptive adjustment and control. Compared with visual inspection, this scheme has lower laying and maintenance costs, better inspection effect, and is more suitable for use in an environment where grain exhaust gas is dry.

[0076] The first control component 820 here can be selected as two hydraulic rotating joints 821 or two hydraulic telescopic joints 822 .

[0077] When the hydraulic rotary joint 821 is selected, the cleaning end 810 can be controlled to rotate around the axis, and the cleaning strip 812 can be controlled to be located close to the belt adsorption device 700 or away from the belt adsorption device 700, so as to switch between the scraping state and the disengaged state.

[0078] When the hydraulic telescopic joint 822 is selected, the positions of the two cleaning ends 810 can be controlled individually or in coordination, so that the cleaning strip 812 abuts against or separates from the surface of the belt-type suction device 700 .

[0079] The arrangement structure of the first control component 820 can be selected Figure 8 , Attachment Fig. 9 The implementation methods in the above description can also be selected by those skilled in the art as needed.

[0080] Specifically, the exhaust gas distribution device 600, the cleaning device 800, and the belt adsorption device 700 are all arranged obliquely toward the first direction. A guide plate 720 arranged obliquely toward the first direction is installed on the inner side of the belt adsorption assembly 710, and a guide opening 721 is opened on the lower side of the guide plate 720.

[0081] Please refer to the attached Figure 5 , controlling the above structure to tilt toward the first direction, the sewage mixture can be discharged from the outside during the scraping process of the cleaning end 810, thereby accelerating the collection process of the sewage mixture; at the same time, by installing a guide plate 720 between the two groups of exhaust gas distribution components, the sewage mixture scraped from the upper end can be centrally guided and collected, reducing the burden on the staff.

[0082] The cleaning end 810 can also be deflected toward the outside, and its deflection direction and arrangement position need to be determined according to the rotation direction of the belt-type adsorption device 700; Figure 4 For example, in the arrangement of the above structure, the belt adsorption device 700 rotates counterclockwise, and at the same time, the cleaning end 810 deflects toward the left side away from the first control component 820, and the cleaning end 810 is parallel to the surface of the belt adsorption device 700, and the overall structure is arranged tilted toward the first direction.

[0083] The sewage mixture inside the belt adsorption device 700 can be quickly scraped and cleaned by the cleaning end 810, reducing the impact on the driving control of the driving roller 713. The sewage mixture outside the belt adsorption device 700 can be centrally scraped after being transported to a certain space; the scraping structure can be installed in the same position to facilitate the centralized collection of the sewage mixture; the two can also be installed in different positions to achieve adaptive cleaning.

[0084] An electric centralized collection structure can be installed on the outer side of the lower side of the belt adsorption device 700 to manually or automatically discharge the centralized collected sewage mixture, thereby realizing automatic circulation of the overall structure.

[0085] An exhaust gas purification box 410 is provided on the outside of the two groups of exhaust gas distribution components. An exhaust gas purification box 410 is used as a minimum unit to realize continuous treatment of grain drying exhaust gas. For scenarios where the grain drying exhaust gas is large, multiple exhaust gas purification boxes 410 can be stacked in the vertical direction to form an exhaust gas purification chamber 400 as a whole, which can increase the treatment capacity of grain drying exhaust gas. An exhaust gas conduction box 420 is installed on the outside of multiple exhaust gas purification boxes 410 to centrally connect the gas pumping device 300 to realize centralized extraction of exhaust gas after dust reduction. An exhaust gas release pipe 430 is installed on the top of the exhaust gas purification box 410 to relieve internal pressure when the internal pressure is too high.

[0086] The present invention is further described below in conjunction with the grain drying method.

[0087] The grain drying method uses the above-mentioned grain drying equipment, comprising the following steps:

[0088] S1. Control the air inlet chamber 200 to introduce dry gas into the grain drying chamber 100, and control the exhaust gas purification chamber 400 to extract the dry exhaust gas in the grain drying chamber 100; the dry gas dries the grain in the grain drying chamber 100 during the process of passing through the grain drying chamber 100, and the dry gas forms grain drying exhaust gas after passing through the grain, and the humidity increases to form grain drying exhaust gas with a high enthalpy value.

[0089] S2. While controlling the directional rotation of the belt adsorption device 700, control the dry exhaust gas to be blown out from the surface of the first group of exhaust gas distribution components and / or the second group of exhaust gas distribution components, and the dry exhaust gas continuously acts on the surface of the belt adsorption device 700 to complete adsorption filtration; the two groups of exhaust gas distribution components can be controlled to blow out the dry exhaust gas of grain at the same time, or to blow out the dry exhaust gas of grain alternately, so as to meet the control requirements under different situations.

[0090] S3. The first control component 820 is used to control the cleaning end 810 to press against the surface of the belt adsorption device 700 to complete continuous cleaning of the adsorbed material on the surface of the belt adsorption device 700. Similarly, the two cleaning ends 810 can be controlled to press against the surface of the belt adsorption device 700 to achieve simultaneous cleaning of the sewage mixture on the surface of the belt adsorption device 700. The cleaning end 810 on either side can also be controlled to press against the surface of the belt adsorption device 700 according to the ventilation state of the two exhaust gas distribution components to achieve adaptive cleaning.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grain drying device, comprising a grain drying chamber (100), wherein an air intake chamber (200) is installed on a first side of the grain drying chamber (100), and an exhaust gas purification chamber (400) is installed on a second side, and a plurality of exhaust gas distribution devices (600) connected to the exhaust gas purification chamber (400) are installed in the grain drying chamber (100), characterized in that: A plurality of exhaust gas distribution devices (600) located on the same horizontal plane form a group of exhaust gas distribution components, an annular belt-type adsorption device (700) is arranged between two adjacent exhaust gas distribution components, a first group of exhaust gas distribution components is installed inside the belt-type adsorption device (700), and a second group of exhaust gas distribution components is installed at a predetermined position below the belt-type adsorption device (700); A cleaning device (800) is also installed in the exhaust gas purification chamber (400), and the cleaning device (800) comprises two cleaning ends (810) arranged at intervals and a first control component (820) for controlling the position states of the two cleaning ends (810), and during the directional movement of the belt-type adsorption device (700), the cleaning ends (810) are controlled to abut against the surface of the belt-type adsorption device (700) to complete continuous cleaning; The belt-type adsorption device (700) comprises a belt-type adsorption assembly (710), wherein the belt-type adsorption assembly (710) comprises a plurality of driving rollers (713), wherein an annular adsorption belt (711) and an annular driving belt (712) are sleeved on the outer sides of the plurality of driving rollers (713), wherein two driving belts (712) are provided, wherein the adsorption belt (711) is located between the two driving belts (712), and the adsorption belt (711) and the driving belt (712) are in a connected state.

2. The grain drying equipment according to claim 1, characterized in that: The exhaust gas distribution device (600) comprises an angular box (610), an exhaust gas distribution pipe (630) is installed on a first side of the angular box (610), an exhaust gas discharge opening (631) is opened on a side wall of the exhaust gas distribution pipe (630), a movably arranged sealing baffle (640) is installed on the outer side of the exhaust gas discharge opening (631), and the sealing baffle (640) is located on the moving path of the exhaust gas discharge opening (631) and is used to control the opening and closing of the exhaust gas discharge opening (631).

3. The grain drying equipment according to claim 2, characterized in that: The exhaust gas distribution device (600) further comprises a second control component (650) for controlling the movable position of the sealing baffle (640); the first control component (820) and the second control component (650) are both hydraulic control components and are in a conducting state.

4. The grain drying equipment according to claim 3, characterized in that: It also includes an oil control device (910), the oil control device (910) includes an oil control housing (911) and an oil control piston (912), the oil control piston (912) is sealingly and slidably connected to the inner wall of the oil control housing (911), and the oil control piston (912) separates the oil control housing (911) into a first control chamber and a second control chamber, the first control chamber is in a communicating state with the second control component (650) of the first group of exhaust gas distribution components, and the second control chamber is in a communicating state with the second control component (650) of the second group of exhaust gas distribution components.

5. The grain drying equipment according to claim 4, characterized in that: An oil temporary storage device (930) is also installed between the second control component (650) and the first control component (820), and a three-way control valve (920) is installed between the oil temporary storage device (930), the second control component (650) and the first control component (820). The oil temporary storage device (930) has a first accommodation elasticity, and the first control component (820) has a second accommodation elasticity, wherein the first accommodation elasticity is greater than the second accommodation elasticity.

6. The grain drying equipment according to claim 5, characterized in that: The three-way control valve (920) is electrically controlled to rotate, and the cleaning end (810) comprises a mounting body (811) and a cleaning strip (812) extending along the length direction of the mounting body (811). An electric control component for controlling the rotation state of the three-way control valve (920) is arranged on the surface of the cleaning strip (812), and the electric control component comprises two conductive protrusions arranged at intervals, and the conductive protrusion is located on a side close to the mounting body (811).

7. The grain drying equipment according to claim 1, characterized in that: The first control component (820) is two hydraulic rotating joints (821) or two hydraulic telescopic joints (822).

8. The grain drying equipment according to claim 1, characterized in that: The exhaust gas distribution device (600), the cleaning device (800), and the belt-type adsorption device (700) are all arranged obliquely in a first direction, and a guide plate (720) arranged obliquely in the first direction is installed on the inner side of the belt-type adsorption assembly (710), and a guide opening (721) is provided on a lower side of the guide plate (720).

9. A grain drying method, characterized in that: Using the grain drying equipment according to any one of claims 1 to 8 comprises the following steps: S1, controlling the air intake chamber (200) to introduce dry gas into the grain drying chamber (100), and controlling the exhaust gas purification chamber (400) to extract dry exhaust gas from the grain drying chamber (100); S2, while controlling the belt-type adsorption device (700) to rotate in a directional manner, controlling the dry exhaust gas to be blown out from the surface of the first exhaust gas distribution component and / or the second exhaust gas distribution component, so that the dry exhaust gas continuously acts on the surface of the belt-type adsorption device (700) to complete adsorption and filtration; S3. Controlling the cleaning end (810) to abut against the surface of the belt-type adsorption device (700) through the first control component (820) to complete continuous cleaning of the adsorbed substances on the surface of the belt-type adsorption device (700).

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