Circulating grain drying and impurity removing integrated system

Abstract

The invention discloses a circulating type grain drying and impurity removing integrated system, and relates to the technical field of grain drying, the circulating type grain drying and impurity removing integrated system comprises a closed drying tower and a pulse dust collector connected with the drying tower and a hot blast stove, and an impeller, a receiving hopper, a collecting hopper, an air guide pipe and a receiving hopper are arranged in the drying tower. When the grain drying device works, the hot blast stove heats air, the draught fan accelerates the hot air and sends the hot air into the drying tower, grains freely fall in the drying tower, the impeller on the top of the inner side of the drying tower works, air on the top of the drying tower is blown to move downwards, raised dust is prevented from moving upwards, the hot air blows the grains, the grains are dried, and impurities in the grains are taken away. After working, hot air enters the pulse dust collector, the pulse dust collector filters out impurities in the hot air and sends the hot air back to the hot blast stove, the hot blast stove heats the air again, water in the air is evaporated, the heated air is dried again, an ash room of a conventional device is not needed, and heat of the air can be recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain drying, in particular to a circulating grain drying and impurity removing integrated system. BACKGROUND

[0002] It is known that the circulating grain dryer is a device for drying grains, which removes the moisture in the grains by heating air and allowing the air to exchange heat with the grains. The characteristic of this dryer is that it can recycle hot air, thereby reducing energy consumption and improving drying efficiency.

[0003] For example, an invention patent with the application publication number CN104061773B and the application publication date of July 6, 2016, and the name of "Grain circulating dryer" includes a radiation drying section, a grain discharging section, a hot air drying section and a grain storage section arranged on a base in turn from bottom to top, a material circulating conveying device is arranged between the radiation drying section and the grain storage section, a heat source capable of generating a hot medium is communicated with one side of the radiation drying section, an air inducing fan and an air mixing chamber are arranged on both sides of the hot air drying section respectively, the air mixing chamber inlet is communicated with the hot medium outlet of the radiation drying section, and the air mixing chamber outlet is communicated with the air inducing fan through the hot air drying section. The advantages of the present application are that not only the hot air drying can be realized alone, but also the hot air drying and the radiation drying can be organically combined, the energy of the high-temperature hot medium can be fully utilized at high and low grades, the heat efficiency is high, the energy consumption is small, the drying is full and uniform, the drying cost is low, the temperature is uniform, and the safety is good.

[0004] The deficiency of the prior art is that when the circulating grain dryer is working, hot air is heated by a hot air furnace, and then the hot air is sent to the main body of the device by a fan, the grain elevator lifts the grains to a high place, and the grains are free-falling in the main body and pass through the area where the hot air flows, thereby drying the grains. However, dust and chaff and other light impurities are generally mixed in the grains, and the light and small particles of dust are taken away by the hot air in the process of falling of the grains. Therefore, the circulating grain dryer needs to be provided with an ash house to collect and store the grain residues and dust generated in the drying process. However, the ash house occupies a large space and has a high risk of dust leakage. SUMMARY

[0005] The purpose of the present application is to provide a circulating grain drying and impurity removing integrated system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a circulating grain drying and impurity removing integrated system, comprising a closed drying tower and a pulse dust collector connected between the drying tower and a hot air furnace, the inside of the drying tower is provided with:

[0007] A fan wheel is arranged at the upper part of the drying tower to push the dust downward;

[0008] A receiving hopper is arranged at the lower part of the drying tower and is communicated with the bottom of the grain elevator;

[0009] A collecting hopper is arranged to collect the grain and guide the grain to fall into the receiving hopper in a waterfall manner;

[0010] An air duct is arranged perpendicularly to the grain falling path and is used to guide the hot air to blow the grain;

[0011] A receiving hopper is arranged opposite to the air duct with respect to the grain falling path.

[0012] As a further description of the above technical solution: the end of the air duct is provided with a middle tube facing the grain falling path and inclined side tubes arranged on both sides of the middle tube, and the axes of the two side tubes intersect behind the grain falling path.

[0013] As a further description of the above technical solution: the receiving hopper comprises a top plate, a plurality of inclined supporting strips, and a plurality of outwardly protruding connecting bands connecting the outermost supporting strips and the top plate.

[0014] As a further description of the above technical solution: the plurality of connecting bands are sequentially crimped from outside to inside.

[0015] As a further description of the above technical solution: the middle part of the connecting band is a thin-walled part.

[0016] As a further description of the above technical solution: a mounting plate for supporting the plurality of supporting strips is slidably arranged inside the drying tower, and the mounting plate moves to adjust the spacing of the plurality of supporting strips.

[0017] As a further description of the above technical solution: a support rod corresponding to each of the plurality of supporting strips is slidably arranged in the mounting plate, and the plurality of support rods comprise middle support rods arranged in the middle and side support rods arranged on both sides.

[0018] As a further description of the above technical solution: the distance between two adjacent side support rods is less than the distance between two adjacent middle support rods.

[0019] As a further description of the above technical solution: a driving rod coupled with the outermost two side support rods is rotatably arranged on the mounting plate, and the driving rod rotates to change the spacing of the plurality of side support rods and the spacing of the plurality of middle support rods.

[0020] As a further description of the above technical solution: a guide groove is arranged on the inner wall of the drying tower to guide the change of the inclination angle of the supporting strips.

[0021] In the above technical solutions, the circulating grain drying and impurity removing integrated system has the following beneficial effects: when working, the hot air furnace heats air, the fan accelerates and sends the hot air to the inside of the drying tower, the grain elevator lifts the grain to a high place and lets the grain free fall in the drying tower, the impeller at the top of the inside of the drying tower works to blow the air at the top of the drying tower to move downward, block the upward movement of dust, the hot air blows the falling grain to dry the grain and remove impurities (such as dust and chaff) in the grain, the working hot air enters the pulse dust collector, the pulse dust collector filters out the impurities in the hot air and sends them back to the hot air furnace, the hot air furnace heats the air again to evaporate the water in the air, and the heated air performs drying work again, there is almost no air leakage in the whole process, the ash room of the conventional device is not needed, and the heat of the air can be recycled, then the collecting hopper collects the falling grain above and guides the grain to fall into the receiving hopper in a waterfall manner, at this time, part of the hot air in the pipeline enters the drying tower under the guidance of the air guide pipe and blows the grain vertically to blow the dust and chaff in the grain, the dust and chaff fall into the receiving hopper under the blowing of the hot air and are collected by the receiving hopper, so that the impurities in the grain are further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0023] Figure 1 The general structure schematic diagram provided for the embodiments of the present application is shown in the figure.

[0024] Figure 2 The structure schematic diagram of the impeller provided for the embodiments of the present application is shown in the figure.

[0025] Figure 3 The structure schematic diagram of the collecting hopper provided for the embodiments of the present application is shown in the figure.

[0026] Figure 4 The structure schematic diagram of the supporting block provided for the embodiments of the present application is shown in the figure.

[0027] Figure 5 The structure schematic diagram of the air duct provided for the embodiments of the present application is shown in the figure. Figure 4 The enlarged view of position A in the figure.

[0028] Figure 6 The structure schematic diagram of the air duct provided for the embodiments of the present application is shown in the figure.

[0029] Figure 7 The enlarged view of position B in the figure. Figure 6 ​

[0030] Figure 8 Structure diagram of air duct provided for the embodiment of the present application;

[0031] Figure 9 Structure diagram of mounting plate provided for the embodiment of the present application;

[0032] Figure 10 Structure diagram of internal structure of mounting plate provided for the embodiment of the present application;

[0033] Figure 11 Structure diagram of movable belt provided for the embodiment of the present application;

[0034] Figure 12 Structure diagram of side surface of movable belt provided for the embodiment of the present application;

[0035] Figure 13 Structure diagram of guide groove provided for the embodiment of the present application;

[0036] Figure 14 Structure diagram of movable strip provided for the embodiment of the present application;

[0037] Figure 15 Structure diagram of receiving hopper provided for the embodiment of the present application;

[0038] Figure 16 Structure diagram of internal structure of air duct provided for the embodiment of the present application.

[0039] Explanation of reference numerals:

[0040] 1, drying tower; 11, receiving hopper; 111, top plate; 112, supporting strip; 1121, side supporting rod; 1122, middle supporting rod; 1123, first rocker; 1124, second rocker; 113, connecting belt; 114, mounting plate; 115, driving rod; 116, gear; 117, rack; 118, protruding block; 119, guide block; 12, collecting hopper; 121, receiving hopper; 122, supporting block; 123, partition plate; 124, movable plate; 125, filter plate; 126, collecting groove; 127, movable strip; 13, impeller; 131, guide groove; 14, air duct; 141, middle tube; 142, side tube; 21, hot blast stove; 22, pulse dust collector; 23, fan; 24, grain elevator. DETAILED DESCRIPTION

[0041] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0042] Please refer to Figures 1-16The embodiment of the present application provides a technical scheme: a circulating grain drying and impurity removing integrated system, which comprises a closed drying tower 1, a pulse dust collector 22 connected with the drying tower 1 and a hot blast stove 21, and the inside of the drying tower 1 is provided with:

[0043] A vane 13 located at the upper part of the drying tower 1 and used for pushing the dust upwardly;

[0044] A receiving hopper 121 located at the lower part of the drying tower 1 and communicated with the bottom of a grain elevator 24;

[0045] A collecting hopper 12 used for collecting the grain and guiding the grain to fall into the receiving hopper 121 in a waterfall mode;

[0046] An air guide pipe 14 perpendicular to the grain falling path and used for guiding the hot air to blow the grain;

[0047] A receiving hopper 11 opposite to the air guide pipe 14 with respect to the grain falling path.

[0048] Specifically, the system further comprises a fan 23, and a pipeline in communication is arranged between the hot blast stove 21 and the fan 23, and the pipeline is communicated with the air guide pipe 14.

[0049] Further, during the working process, the hot blast stove 21 heats the air, the fan 23 accelerates and sends the hot air into the inside of the drying tower 1, the grain elevator 24 lifts the grain to a high position and makes the grain free fall in the inside of the drying tower 1, the vane 13 at the top of the inside of the drying tower 1 works to blow the air at the top of the drying tower 1 downwardly, so as to block the dust upwardly, the hot air blows the falling grain, dries the grain and removes the impurities (such as dust and chaff) in the grain, the working hot air enters the pulse dust collector 22, the pulse dust collector 22 filters the impurities in the hot air and sends the impurities back to the hot blast stove 21, the hot blast stove 21 heats the air again, evaporates the water in the air, and the heated air performs the drying work again, and during the whole process, there is almost no air leakage, no conventional ash room is needed, and the heat of the air can be recycled, then the collecting hopper 12 collects the grain falling from the top and guides the grain to fall into the receiving hopper 121 in a waterfall mode, at this time, part of the hot air in the pipeline enters the drying tower 1 under the guidance of the air guide pipe 14 and blows the grain vertically, blows the dust and chaff in the grain, the dust and chaff fall into the receiving hopper 11 under the blowing of the hot air and are collected by the receiving hopper 11, so that the impurities in the grain are further reduced.

[0050] In another embodiment of the present application, the end of the air guide pipe 14 is provided with a middle pipe 141 opposite to the grain falling path and inclined side pipes 142 located at the two sides of the middle pipe 141, and the axes of the two side pipes 142 intersect at the back of the grain falling path.

[0051] Specifically, the inside of the air guide pipe 14 is provided with a wind distribution plate.

[0052] Further, in the process of working, the collecting hopper 12 collects the grain and guides the grain to fall in the collecting hopper 121 in a waterfall manner, part of the hot air flowing out of the hot air furnace 21 enters the air duct 14 and is divided into three parts by the air duct 14, the middle tube 141 guides the hot air to blow vertically on the middle part of the grain falling in a waterfall manner, and blows the impurities in the middle part of the grain to the rear (the direction of the grain falling in a waterfall manner close to the receiving hopper 11 is the rear), the side tube 142 guides the hot air to blow on both sides of the grain falling in a waterfall manner, and pushes the grain on both sides to move obliquely to the rear, so that the grain on both sides is close to the central axis of the collecting hopper 121, thereby avoiding that the width of the grain falling in a waterfall manner is too large to fall to the outside of the receiving hopper 11 (the relationship between the grain falling area and the air direction of the air duct 14 is shown in Figure 16 ).

[0053] In still another embodiment of the present application, the collecting hopper 121 comprises a top plate 111, a plurality of inclined supporting strips 112, and a plurality of outward protruding connecting bands 113 connecting the outermost supporting strips 112 and the top plate 111.

[0054] Specifically, the inside of the drying tower 1 is provided with a partition plate 123, and the partition plate 123 and the inside of the drying tower 1 combine to form an arc-shaped air duct, the tail end of the air duct is communicated with the pipeline, the inside of the drying tower 1 is provided with a collecting groove 126 for collecting impurities communicated with the middle part of the air duct, the inside of the air duct is provided with an inclined filter plate 125 for guiding the impurities into the collecting groove 126, a plurality of inclined movable strips 127 are hinged in the collecting groove 126, and the bottom of the collecting groove 126 is provided with a movable door plate, which can be opened by the worker to release the impurities after working for a period of time, and the fan 23 sucks the airflow in the pipeline and the air duct to form a negative pressure, so that the receiving hopper 11 receives and guides the airflow to move to the inside of the air duct.

[0055] Further, in the process of working, the air duct 14 guides the hot air to blow the grain, so that the light impurities in the grain are separated from the grain waterfall and fall into the collecting hopper 12 composed of the top plate 111, the supporting strip 112 and the connecting belt 113, and the impurities continue to move with the hot air and enter the arc-shaped air duct, the filter plate 125 in the air duct blocks the large-particle impurities (such as chaff) in the hot air, the large-particle impurities fall into the collecting groove 126 and are pushed by the hot air, the hot air pushes the impurities and the movable strip 127 to move, part of the movable strip 127 rotates to allow the impurities to enter, and the air between the movable strips 127 can allow the air in the collecting groove 126 to be discharged, then the movable strip 127 falls under the action of gravity, sealing the collecting groove 126 to prevent the impurities in the collecting groove 126 from flying with the wind, the hot air continues to move through the filter plate 125, back to the pipeline and enters the fan 23 with the pipeline to participate in the drying work again, and the inclined supporting strip 112 can receive the impurities and the grain mistakenly blown into the receiving hopper 11, guide the impurities to move to the inside of the receiving hopper 11, and the grain can fall into the receiving hopper 121 from the gap between the supporting strips 112 (generally, the size of the chaff and straw of the grain is larger than the size of the grain).

[0056] Further, in the above embodiment, a circulating dust removal box can be arranged between the air duct and the pipeline, which can filter the airflow flowing through the air duct, filter out the dust, straw and other light impurities in the airflow, and allow the airflow to enter the pipeline to participate in the drying work again.

[0057] In another embodiment provided by the application, the inside of the drying tower 1 is slidably provided with a mounting plate 114 for supporting a plurality of supporting strips 112, the mounting plate 114 is moved to adjust the spacing of the plurality of supporting strips 112, and the middle lower area of the connecting belt 113 is a thin-walled part.

[0058] Specifically, the inside of the drying tower 1 is slidably provided with a movable plate 124 abutting against the partition plate 123, a spring is arranged between the movable plate 124 and the drying tower 1, the top of the movable plate 124 abuts against the side wall of the mounting plate 114, and in the process of moving the mounting plate 114, the movable plate 124 always abuts against the mounting plate 114 under the action of the spring, so as to seal the gap between the air duct and the receiving hopper 11, and the inside of the air duct 14 is provided with an electromagnetic air volume adjusting valve (which is a prior art and will not be described here).

[0059] Further, when drying grains of different sizes, the distance between the support bars 112 can be changed by moving the mounting plate 114, so that the grains fall back into the receiving hopper 121 from the gaps between the support bars 112, the large-particle impurities in the grains move along the support bars 112 to the inner side of the receiving hopper 11, and when the mounting plate 114 moves and the distance between the support bars 112 changes, the distance between the outermost support bars 112 changes, the distance between the support bars 112 and the top plate 111 changes, the flexible connecting belts 113 can always be kept in close contact, the connecting belts 113 combine to form the sidewall of the receiving hopper 11, when drying grains of smaller sizes, the support bars 112 move upward, the distance between the support bars 112 decreases, the distance between the support bars 112 and the top plate 111 decreases, the flexible movable belts are deformed, the thin-walled part of the movable belts is more easily bent, the lower part of the movable belts is more bent and tends to be in the plane of the support bars 112, which facilitates the collection of impurities blown out by the hot air, and when drying grains of different sizes, the worker adjusts the air volume entering the air duct 14 through the electromagnetic air volume adjusting valve, so as to avoid that the air volume is too large to blow the grains into the receiving hopper 11.

[0060] Still further, the connecting belts 113 in the above embodiment are specifically copper alloy sheets.

[0061] In still another embodiment provided by the application, the mounting plate 114 is slidably provided with support rods corresponding to the plurality of support bars 112, the plurality of support rods include middle support rods 1122 located in the middle and side support rods 1121 located on both sides, the distance between adjacent two side support rods 1121 is smaller than the distance between adjacent two middle support rods 1122.

[0062] Specifically, in the process of moving the mounting plate 114, the middle support rods 1122 and the side support rods 1121 in the mounting plate 114 drive the support bars 112 thereon to move, so as to change the distance between the support bars 112, and the distance between the support bars 112 located on both sides and the grain waterfall is farther, the weight of the grains and impurities blown onto the support bars 112 on both sides by the hot air is smaller, and the smaller distance between the support bars 112 on both sides can adapt to the grains and impurities with smaller weight, so as to facilitate the movement of the impurities to the inner side of the receiving hopper 11 and the falling back of the grains with smaller size into the receiving hopper 121.

[0063] In still another embodiment provided by the application, the mounting plate 114 is rotatably provided with a driving rod 115 coupled with the two outermost side support rods 1121, the driving rod 115 rotates to change the distance between the plurality of side support rods 1121 and the distance between the plurality of middle support rods 1122.

[0064] Specifically, the second rocker 1124 is rotationally arranged between adjacent side support rods 1121 and between adjacent middle support rods 1122, the middle part of the second rocker 1124 is rotationally installed on the corresponding middle support rod 1122 or side support rod 1121, the end parts of two adjacent second rockers 1124 are hingedly connected, the first rocker 1123 is hingedly connected between the side support rod 1121 on the two sides and the rocker on the adjacent side support rod 1121, and the first rocker 1123 is hingedly connected between the side support rod 1121 and the adjacent middle support rod 1122 (as shown in FIG. Figure 10 The driving rod 115 is rotationally arranged on the mounting plate 114, the end part of the driving rod 115 extends into the drying tower 1 and is provided with a gear 116, the inside of the drying tower 1 is provided with a rack 117 matched with the gear 116, the side wall of the gear 116 is provided with coaxially distributed cylindrical protrusions 118, the inside of the drying tower 1 is slidingly provided with a supporting block 122 for lifting the protrusions 118, an electric telescopic rod is arranged between the supporting block 122 and the drying tower 1, and the side wall of the driving rod 115 is symmetrically provided with threaded parts, the two threaded parts are respectively coupled with the two outermost side support rods 1121 and have opposite screw directions.

[0065] Further, when the smaller size grains need to be processed, the staff controls the electric telescopic rod to extend, the protrusions 118 and the driving rod 115 are pushed upward by the supporting block 122, the driving rod 115 drives the mounting plate 114 to move upward, the rack 117 drives the gear 116 to drive the driving rod 115 to rotate, the threaded parts on the driving rod 115 drive the two outermost side support rods 1121 to move to the middle part of the mounting plate 114, the side support rod 1121 drives the plurality of side support rods 1121 and middle support rods 1122 to move through the first rocker 1123 and the second rocker 1124, the second rockers 1124 on the side support rods 1121 remain parallel, the second rockers 1124 on the middle support rods 1122 remain parallel, thereby synchronously adjusting the distance between any two adjacent side support rods 1121 and the distance between any two adjacent middle support rods 1122 (the distance between any two adjacent side support rods 1121 is the same, and the distance between any two adjacent middle support rods 1122 is the same), and the distance between the two adjacent middle support rods 1122 is always greater than the distance between the two adjacent side support rods 1121.

[0066] In still another embodiment of the present application, the inner wall of the drying tower 1 is provided with a guide groove 131 for guiding the change of the inclination angle of the supporting strip 112, and the plurality of connecting belts 113 are sequentially crimped from outside to inside.

[0067] Specifically, the mounting plate 114 is provided with a cylindrical guide block 119 matched with the guide groove 131.

[0068] Further, in the process of moving the mounting plate 114, the guide block 119 on the mounting plate 114 moves along the inclined guide groove 131 on the inner wall of the drying tower 1, the guide groove 131 pushes the guide block 119, thereby making the mounting plate 114 rotate relative to the driving rod 115, the mounting plate 114 drives the supporting strip 112 to move, so that the inclination angle of the supporting strip 112 changes. When the grains with large particles are dried, the chaff and straw in the grains are also large and not easy to move with the wind. The mounting plate 114 is at a lower point, and the inclination angle of the supporting strip 112 is large, which facilitates the acceptance of impurities and guides the impurities into the inside of the receiving hopper 11. When the grains with small particles are dried, the chaff and straw in the grains are also small and easy to directly enter the inside of the receiving hopper 11 with the airflow. In the process of moving the mounting plate 114 upward, the guide groove 131 pushes the mounting plate 114 to rotate, so that the inclination angle of the supporting strip 112 is reduced, and the distance between the end of the supporting strip 112 and the top plate 111 is changed little, which facilitates the maintenance of the size of the opening of the receiving hopper 11. At the same time, the inclination angle of the supporting strip 112 is reduced, which drags the connecting belt 113, so that the bending degree of the outer connecting belt 113 is smaller than that of the inner connecting belt 113. The outer connecting belt 113 can push the inner connecting belt 113, so that the outer connecting belt 113 and the inner connecting belt 113 are closely combined to form the side wall of the receiving hopper 11.

[0069] Further, the middle part of the overlapping part of the connecting belt 113 in the above embodiment can be reinforced by spot welding, which facilitates the combination of multiple connecting belts 113 to form the side wall of the receiving hopper 11.

[0070] The above only describes some exemplary embodiments of the present application in a descriptive manner, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A cyclic grain drying and cleaning integrated system, characterized by, The closed drying tower (1), the pulse dust collector (22) connecting the drying tower (1) and the hot blast stove (21), the inside of the drying tower (1) is provided with: The impeller (13) is located in the upper part of the drying tower (1) and is used for pushing the dust down; The receiving hopper (121) is located in the lower part of the drying tower (1) and is communicated with the bottom of the grain elevator (24); The collecting hopper (12) is used for collecting grains and guiding the grains to fall into the receiving hopper (121) in a waterfall manner; The air duct (14) is perpendicular to the grain falling path and is used for guiding the hot air to blow the grains; The receiving hopper (11) is opposite to the air duct (14) with respect to the grain falling path.

2. The integrated system for drying and cleaning grains according to claim 1, wherein The end of the air duct (14) is provided with a middle pipe (141) opposite to the grain falling path and inclined side pipes (142) located on both sides of the middle pipe (141), and the axes of the two side pipes (142) intersect behind the grain falling path.

3. The integrated system for drying and cleaning grains according to claim 1, wherein The receiving hopper (121) includes a top plate (111), a plurality of inclined supporting strips (112), and a plurality of outwardly protruding connecting bands (113) connecting the outermost supporting strips (112) and the top plate (111).

4. The integrated system for drying and cleaning grains according to claim 3, wherein The plurality of connecting bands (113) are sequentially crimped from outside to inside.

5. The integrated system for drying and cleaning grains according to claim 3, wherein The middle lower area of the connecting band (113) is a thin-walled part.

6. The integrated system for drying and cleaning grains according to claim 3, wherein The inside of the drying tower (1) is slidably provided with a mounting plate (114) for supporting the plurality of supporting strips (112), and the mounting plate (114) moves to adjust the spacing of the plurality of supporting strips (112).

7. The integrated system for drying and cleaning grains according to claim 6, wherein The mounting plate (114) is slidably provided with a support rod corresponding to each of the plurality of supporting strips (112), and the plurality of support rods include middle support rods (1122) located in the middle and side support rods (1121) located on both sides.

8. The integrated system for drying and cleaning grains according to claim 7, wherein, The distance between adjacent two side support rods (1121) is less than the distance between adjacent two middle support rods (1122).

9. The integrated system for drying and cleaning grains according to claim 7, wherein The mounting plate (114) is rotatably provided with a driving rod (115) coupled with the two outermost side support rods (1121), and the driving rod (115) rotates to change the spacing of the plurality of side support rods (1121) and the spacing of the plurality of middle support rods (1122) equally.

10. The integrated system for drying and cleaning grains according to claim 3, wherein The inner wall of the drying tower (1) is provided with a guide groove (131) for guiding the change of the inclination angle of the supporting strip (112).

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