Grain impurity treatment device of static grain dryer

Abstract

The invention relates to the technical field of grain storage, and discloses a grain impurity treatment device of a static grain dryer, which comprises a dryer body, and the upper surface of the dryer body is fixedly connected with an E-shaped frame; the lower surface of the impurity removing box is fixedly connected with the upper surface of the E-shaped frame, the bottom of the impurity removing box is open, a feeding port is formed in the outer surface of the impurity removing box, a first partition plate and a second partition plate are fixedly connected to the inner wall of the impurity removing box, and the second partition plate is located on the side, away from the feeding port, of the first partition plate. A screen drum is rotationally connected between the first partition plate and the impurity removing box, and center shafts are fixedly connected to the two opposite sides in the impurity removing box. The grain impurity treatment device of the static grain dryer can effectively solve the problems that in the prior art, flowing large-particle impurities easily drive part of grain particles to be jointly discharged from the impurity discharging opening of the screen drum, so that actually available grains are reduced, and the grain yield and the overall income are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of grain storage, and particularly relates to a device for processing grain impurities in a static grain dryer. Background Art

[0002] A grain dryer is a mechanical device specifically used to reduce the moisture content of grain crops. Its core function is to quickly remove excess moisture from the grain through a hot air and ventilation system, preventing mildew, germination, and pests, thereby ensuring the safe storage and quality of the grain. During the process of drying grain with the help of a dryer, a cylindrical sieve is usually used to filter and remove impurities from the grain to be dried. The cylindrical sieve separates impurities and grain by rotating the sieve drum and using the size of the sieve holes. The material enters from one end of the sieve drum, and the grain particles pass through the sieve holes and are discharged downward, while the large particle impurities are discharged from the other end of the sieve drum.

[0003] Currently, during the process of using a cylindrical sieve to filter and remove grain impurities, the rotating sieve drum drives large particle impurities to move from the feed end to the discharge end of the sieve drum through the guiding spiral provided on its inner wall. The flowing large particle impurities are likely to drive some grain particles to be discharged together from the impurity discharge port of the sieve drum, resulting in a reduction in the actually available grain, and thus directly reducing the grain yield and overall income. Summary of the Invention

[0004] In view of the above-mentioned drawbacks of the prior art, the present invention provides a device for processing grain impurities in a static grain dryer, which can effectively solve the problem in the prior art that flowing large particle impurities are likely to drive some grain particles to be discharged together from the impurity discharge port of the sieve drum, resulting in a reduction in the actually available grain, and reducing the grain yield and overall income.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides a device for processing grain impurities in a static grain dryer, including:

[0007] A dryer body, on the upper surface of which an E-shaped frame is fixedly connected;

[0008] A impurity removal box, the lower surface of which is fixedly connected to the upper surface of the E-shaped frame. The bottom of the impurity removal box is open. An inlet is provided on the outer surface of the impurity removal box. A first partition and a second partition are respectively fixedly connected to the inner wall of the impurity removal box. The second partition is located on the side of the first partition away from the inlet. A sieve drum is rotatably connected between the first partition and the impurity removal box. Central shafts are fixedly connected to opposite sides inside the impurity removal box. The central shafts penetrate through the sieve drum, the first partition, and the second partition. A rotating ring is rotatably arranged on the circumferential outer surface of the central shafts. A rotating gear block is rotatably connected to the center of the second partition;

[0009] In the process of the rotating gear block rotating around the central axis, the screen drum drives the material to move along the screen drum toward the first partition through the spiral member arranged on its inner wall, and the rotating ring disperses the flowing material through the material-diverting plate arranged on its circumferential outer surface.

[0010] Furthermore, the spiral member includes a first spiral member, a second spiral member and a flat member, the first spiral member is fixedly connected to the inner wall of the screen cylinder near the feed port, and the second spiral member and the flat member are fixedly connected to the inner wall of the screen cylinder near the first partition.

[0011] Furthermore, the end of the rotating ring close to the first partition is fixedly connected to a connecting rod, the end of the connecting rod away from the rotating ring is fixedly connected to a rotating drum, the rotating drum is rotatably sleeved on the circumferential outer surface of the central axis, the end of the rotating drum away from the rotating ring passes through the first partition and the rotating gear block in sequence and extends to between the second partition and the de-dusting box, a triangular block is fixedly connected to the circumferential outer surface of the rotating drum, the end of the triangular block away from the rotating drum is rotatably connected to a push-pull rod, and the end of the push-pull rod away from the triangular block is rotatably connected to a slider.

[0012] Furthermore, a vertical slide groove is provided on the inner wall of the de-dusting box, and the slider is slidably connected to the de-dusting box via the vertical slide groove. A square slide rail is fixedly connected to the side of the rotating gear block away from the first partition, and the slider is slidably connected to the rotating gear block via the square slide rail.

[0013] Furthermore, the inner wall of the sieve cylinder is fixedly connected to a mounting rod, one end of the mounting rod away from the sieve cylinder is fixedly connected to a hollow cylinder, the inner wall of the hollow cylinder is rotatably connected to a shaft rod, and both ends of the shaft rod are fixedly connected to T-shaped rods.

[0014] Furthermore, a four-corner slide rail is rotatably sleeved on the outer circumference of the rotating drum, a fixing rod is fixedly connected to the outer circumference of the central axis, one end of the fixing rod away from the central axis is fixedly connected to the four-corner slide rail, and one end of the T-shaped rod away from the screen drum is slidably connected to the four-corner slide rail;

[0015] Among them, the four-corner sliding rail includes a concave rail and a convex rail connected end to end. During the sliding connection between the T-shaped rod and the concave rail, the T-shaped rod rotates back and forth around the axis of the hollow cylinder. During the sliding connection between the T-shaped rod and the convex rail, the positions of the T-shaped rod and the hollow cylinder remain relatively fixed.

[0016] Furthermore, the bottom of the de-impurity box is fixedly connected with a first lower hopper and a second lower hopper, respectively. The first lower hopper is located directly below the screen drum, and the second lower hopper is located directly below the first partition and the second partition. The bottom end of the first lower hopper is fixedly connected to the upper surface of the dryer body.

[0017] Further, a driving motor is fixedly connected to one side of the impurity removal box away from the feed inlet. A driving gear is rotatably connected to one side of the second partition plate away from the first partition plate. The driving gear is meshed with the rotating tooth block. The output end of the driving motor penetrates through the impurity removal box and is fixedly connected to the driving gear. A rotating ring member is fixedly connected between the rotating tooth block and the screening cylinder.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0019] The present invention is provided with a material pushing plate. By controlling the driving motor to drive the driving gear, the rotating tooth block, the rotating ring member and the screening cylinder to rotate, the screening cylinder drives the grain particles to roll inside the screening cylinder through the spiral member, so that the grain particles pass through the screening holes on the screening cylinder and fall into the first feed hopper. The screening cylinder pushes the large particle impurities towards the first partition plate through the spiral member. At the same time, the rotating tooth block drives the slider to reciprocate up and down along the vertical chute through the square slide rail. The slider drives the triangular block and the rotating cylinder to rotate reciprocally around the central axis through the push rod. The rotating cylinder drives the rotating ring and the material pushing plate to swing reciprocally around the central axis through the connecting rod. Under the reciprocating swinging action of the material pushing plate, the material pushing plate toggles the large particle impurities located in the middle position of the screening cylinder back and forth, so that the large particle impurities located in the middle position of the screening cylinder are in a scattered state, promoting the grain particles in the large particle impurities to pass through the screening holes on the screening cylinder and fall into the first feed hopper, preventing the grain particles from being doped between the large particle impurities and passing through the first partition plate and causing the grain particles to fall into the second feed hopper, thereby avoiding the reduction of the actually available grain and further reducing the loss of grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the driving motor of an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the first partition plate of an embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the screening cylinder of an embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the rotating ring member of an embodiment of the present invention;

[0026] Figure 6 This is an exploded schematic view of the second partition board of the embodiment of the present invention from another perspective;

[0027] Figure 7 This is a structural schematic view of the sieve cylinder of the embodiment of the present invention from another perspective;

[0028] Figure 8 This is an exploded schematic view of the second spiral member of the embodiment of the present invention from another perspective;

[0029] Figure 9 This is an exploded schematic view of the four - corner slide rail of the embodiment of the present invention.

[0030] The reference numerals in the figure respectively represent: 1, dryer body; 11, E - shaped frame; 2, impurity removal box; 20, feed inlet; 21, first partition board; 22, second partition board; 23, sieve cylinder; 231, first spiral member; 232, second spiral member; 233, flat plate member; 24, central shaft; 25, rotating ring; 251, material - pushing plate; 252, connecting rod; 253, rotating cylinder; 254, triangular block; 255, push - pull rod; 256, slider; 2561, vertical chute; 2562, square slide rail; 26, rotating tooth block; 27, hollow cylinder; 271, mounting rod; 272, shaft rod; 273, T - shaped rod; 274, fixing rod; 275, four - corner slide rail; 2751, concave rail; 2752, convex rail; 28, first discharge hopper; 281, second discharge hopper; 3, drive motor; 31, drive gear; 32, rotating ring member. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1-9 , the present invention provides a technical solution: a device for processing grain impurities in a static grain dryer, comprising:

[0035] The dryer body 1, and an E - shaped frame 11 is fixedly connected to the upper surface of the dryer body 1;

[0036] The impurity removal box 2 has its lower surface fixedly connected to the upper surface of the E-shaped frame 11. The bottom of the impurity removal box 2 is open. The outer surface of the impurity removal box 2 is provided with a feed inlet 20. The inner walls of the impurity removal box 2 are respectively fixedly connected with a first partition plate 21 and a second partition plate 22. The second partition plate 22 is located on the side of the first partition plate 21 away from the feed inlet 20. A sieve cylinder 23 is rotatably connected between the first partition plate 21 and the impurity removal box 2. Opposite sides inside the impurity removal box 2 are fixedly connected with a central shaft 24. The central shaft 24 penetrates through the sieve cylinder 23, the first partition plate 21 and the second partition plate 22. A rotating ring 25 is rotatably arranged on the circumferential outer surface of the central shaft 24. A rotating tooth block 26 is rotatably connected to the center of the second partition plate 22;

[0037] Among them, during the process of the rotating tooth block 26 rotating around the central shaft 24, the sieve cylinder 23 drives the material to move along the sieve cylinder 23 towards the first partition plate 21 through the spiral member provided on its inner wall, and the rotating ring 25 uses the baffle plate 251 provided on its circumferential outer surface to stir and disperse the flowing material.

[0038] The spiral member includes a first spiral member 231, a second spiral member 232 and a flat plate member 233. The first spiral member 231 is fixedly connected to the inner wall of the sieve cylinder 23 at the end close to the feed inlet 20, and the second spiral member 232 and the flat plate member 233 are fixedly connected to the inner wall of the sieve cylinder 23 at the end close to the first partition plate 21.

[0039] One end of the rotating ring 25 close to the first partition plate 21 is fixedly connected with a connecting rod 252. The end of the connecting rod 252 away from the rotating ring 25 is fixedly connected with a rotating cylinder 253. The rotating cylinder 253 is rotatably sleeved on the circumferential outer surface of the central shaft 24. The end of the rotating cylinder 253 away from the rotating ring 25 sequentially penetrates through the first partition plate 21 and the rotating tooth block 26 and extends between the second partition plate 22 and the impurity removal box 2. A triangular block 254 is fixedly connected to the circumferential outer surface of the rotating cylinder 253. One end of the triangular block 254 away from the rotating cylinder 253 is rotatably connected with a push-pull rod 255, and one end of the push-pull rod 255 away from the triangular block 254 is rotatably connected with a slider 256.

[0040] A vertical sliding groove 2561 is provided on the inner wall of the impurity removal box 2. The slider 256 is slidably connected to the impurity removal box 2 through the vertical sliding groove 2561. A square sliding rail 2562 is fixedly connected to the side of the rotating tooth block 26 away from the first partition plate 21. The slider 256 is slidably connected to the rotating tooth block 26 through the square sliding rail 2562.

[0041] An installation rod 271 is fixedly connected to the inner wall of the sieve cylinder 23. The end of the installation rod 271 away from the sieve cylinder 23 is fixedly connected with a hollow cylinder 27. A shaft rod 272 is rotatably connected to the inner wall of the hollow cylinder 27. T-shaped rods 273 are fixedly connected to both ends of the shaft rod 272.

[0042] A four-corner slide rail 275 is rotatably sleeved on the circumferential outer surface of the rotary drum 253. A fixed rod 274 is fixedly connected to the circumferential outer surface of the central shaft 24. One end of the fixed rod 274 away from the central shaft 24 is fixedly connected to the four-corner slide rail 275. One end of the T-shaped rod 273 away from the sieve drum 23 is slidably connected to the four-corner slide rail 275;

[0043] Among them, the four-corner slide rail 275 includes a concave rail 2751 and a convex rail 2752 connected end to end. During the process of the T-shaped rod 273 slidingly connecting with the concave rail 2751, the T-shaped rod 273 reciprocally rotates around the axis of the hollow cylinder 27. During the process of the T-shaped rod 273 slidingly connecting with the convex rail 2752, the position of the T-shaped rod 273 and the hollow cylinder 27 remains relatively fixed.

[0044] The bottom of the impurity removal box 2 is fixedly connected with a first discharge hopper 28 and a second discharge hopper 281 respectively. The first discharge hopper 28 is located directly below the sieve drum 23, and the second discharge hopper 281 is located directly below the first partition plate 21 and the second partition plate 22. The bottom end of the first discharge hopper 28 is fixedly communicated with the upper surface of the dryer body 1.

[0045] A driving motor 3 is fixedly connected to one side of the impurity removal box 2 away from the feed inlet 20. A driving gear 31 is rotatably connected to one side of the second partition plate 22 away from the first partition plate 21. The driving gear 31 is meshed and connected with the rotating tooth block 26. The output end of the driving motor 3 penetrates through the impurity removal box 2 and is fixedly connected to the driving gear 31. A rotating ring member 32 is fixedly connected between the rotating tooth block 26 and the sieve drum 23.

[0046] The filtering process of grain particles:

[0047] In practical applications, by controlling the grain to enter the inside of the sieve drum 23 from the feed inlet 20 on the impurity removal box 2, and by starting the driving motor 3, the driving motor 3 drives the driving gear 31 to rotate on the second partition plate 22 through the output end. Under the meshing action of the driving gear 31 and the rotating tooth block 26, the driving gear 31 drives the rotating tooth block 26 to rotate around the axis of the central shaft 24 on the second partition plate 22. The rotating tooth block 26 drives the sieve drum 23 to rotate around the axis of the central shaft 24 through the rotating ring member 32. The sieve drum 23 drives the first spiral member 231, the second spiral member 232 and the flat plate member 233 on its inner wall to rotate synchronously. Under the rotating action of the first spiral member 231, the rotating first spiral member 231 drives the grain to roll inside the sieve drum 23, so that the grain particles pass through the sieve holes on the sieve drum 23 and fall into the inside of the first discharge hopper 28. The rotating first spiral member 231 drives the large-particle impurities to move along the inner wall of the sieve drum 23 towards the first partition plate 21.

[0048] The spreading process of large-particle impurities:

[0049] In practical applications, after the first spiral member 231 pushes large particulate impurities to the middle position of the sieve cylinder 23, under the rotational action of the rotating tooth block 26, the rotating tooth block 26 drives the square slide rail 2562 on its outer surface to rotate around the axis of the central shaft 24. Under the limiting action of the square slide rail 2562, the rotating square slide rail 2562 drives the slider 256 inside it to reciprocate up and down along the vertical chute 2561. The two reciprocating sliders 256 drive two triangular blocks 254 to reciprocally rotate around the axis of the central shaft 24 through two push rods 255. The two triangular blocks 254 drive the rotating cylinder 253 to reciprocally rotate around the axis of the central shaft 24. The reciprocally rotating rotating cylinder 253 drives three rotating rings 25 to reciprocally rotate around the axis of the central shaft 24 through the connecting rod 252 provided at one end thereof. The three rotating rings 25 drive the material deflecting plate 251 at their bottom to reciprocally swing around the axis of the central shaft 24. Under the reciprocating swinging action of the material deflecting plate 251, the material deflecting plate 251 toggles the large particulate impurities located at the middle position of the sieve cylinder 23 back and forth, so that the large particulate impurities located at the middle position of the sieve cylinder 23 are in a dispersed state, promoting the grain particles in the large particulate impurities to pass through the sieve holes on the sieve cylinder 23 and fall into the inside of the first discharge hopper 28, preventing the grain particles from being mixed between the large particulate impurities and passing through the first partition plate 21 and causing the grain particles to fall into the second discharge hopper 281.

[0050] Discharging process of large particulate impurities:

[0051] In practical applications, as Figure 7 shown, the inner diameter of the middle part of the sieve cylinder 23 near one end of the first spiral member 231 is smaller than the inner diameter of the middle part of the sieve cylinder 23 near one end of the second spiral member 232. Under the rotational action of the sieve cylinder 23, the large particulate impurities located in the middle of the sieve cylinder 23 gradually move towards the second spiral member 232. Under the rotational action of the second spiral member 232, the second spiral member 232 drives the large particulate impurities to move upward along the inner wall of the sieve cylinder 23. Under the filtering action of the sieve holes on the second spiral member 232, it is difficult for the second spiral member 232 to directly push the grain particles to move along the inner wall of the sieve cylinder 23 towards the first partition plate 21.

[0052] Stirring process of large particulate impurities:

[0053] In practical applications, even if there are a small number of grain particles mixed between large particle impurities and moving along the second spiral member 232 towards the first partition plate 21, when the large particle impurities come into contact with the flat plate member 233 along the second spiral member 232, under the rotation of the sieve cylinder 23, the sieve cylinder 23 drives the hollow cylinder 27 to rotate around the central axis 24 through two mounting rods 271 on its inner wall. The rotating hollow cylinder 27 drives two T-shaped rods 273 to rotate around the axis of the central axis 24 through a shaft rod 272 inside it, so that the ends of the two T-shaped rods 273 far from the sieve cylinder 23 slide cyclically along the four-corner slide rail 275. When the ends of the T-shaped rods 273 far from the sieve cylinder 23 slide along the concave rail 2751, under the limiting action of the concave rail 2751, the concave rail 2751 drives the T-shaped rods 273 to swing reciprocally around the axis of the shaft rod 272 through the ends of the T-shaped rods 273 far from the sieve cylinder 23. Under the reciprocal swinging action of the two T-shaped rods 273, the two T-shaped rods 273 stir the large particle impurities on one side of the flat plate member 233 back and forth, further dispersing the large particle impurities, so that a small number of grain particles mixed between the large particle impurities pass through the sieve holes on the sieve cylinder 23 and fall into the interior of the first hopper 28. The second spiral member 232 drives the large particle impurities to continue moving along the inner wall of the sieve cylinder 23 towards the first partition plate 21 until the large particle impurities pass through the sieve cylinder 23 and the first partition plate 21 and fall into the interior of the second hopper 281.

[0054] In summary, by adopting the rotating ring 25, the present application has the following advantages:

[0055] Advantage one: By setting the sieve cylinder 23 to continuously rotate around the axis of the central axis 24, the rotating sieve cylinder 23 drives the grain particles to continuously roll inside the sieve cylinder 23 through the first spiral member 231 on its inner wall. Under the filtering action of the sieve holes on the sieve cylinder 23, the rolling grain particles pass through the sieve holes on the sieve cylinder 23 and fall into the interior of the first hopper 28. The large particle impurities cannot pass through the sieve holes on the sieve cylinder 23 and are retained inside the sieve cylinder 23. The rotating first spiral member 231 pushes the large particle impurities to roll along the inner wall of the sieve cylinder 23 towards the first partition plate 21, so that the large particle impurities pass through the first partition plate 21 and fall into the interior of the second hopper 281, completing the separation of the grain particles and the large particle impurities, thereby removing impurities from the grain particles to be dried.

[0056] Advantage two: By setting the rotating ring 25 to rotate forward and backward cyclically around the axis of the central axis 24, the rotating ring 25 drives the material deflecting plate 251 at its bottom to swing reciprocally around the axis of the central axis 24, so that the bottom of the material deflecting plate 251 scrapes reciprocally along the inner wall of the sieve cylinder 23, as Figure 5As shown, under the scraping action at the bottom of the feeding plate 251, it prevents grain particles and large particle impurities from clogging the sieve holes on the sieve cylinder 23, thereby dredging the sieve holes on the sieve cylinder 23. Secondly, under the reciprocating swing action of the feeding plate 251, the feeding plate 251 toggles back and forth the large particle impurities located in the middle position of the sieve cylinder 23, making the large particle impurities located in the middle position of the sieve cylinder 23 in a scattered state, promoting the grain particles in the large particle impurities to pass through the sieve holes on the sieve cylinder 23 and fall inside the first discharge hopper 28, preventing the grain particles from being doped between the large particle impurities and passing through the first partition plate 21 and making the grain particles fall into the second discharge hopper 281.

[0057] Advantage three, as Figure 7 shown, by setting the inner diameter of the middle part of the sieve cylinder 23 near one end of the first spiral member 231 to be smaller than the inner diameter of the middle part of the sieve cylinder 23 near one end of the second spiral member 232, under the rotation action of the sieve cylinder 23, the large particle impurities located in the middle of the sieve cylinder 23 gradually move towards the second spiral member 232, avoiding the accumulation of large particle impurities between the first spiral member 231 and the second spiral member 232, thereby improving the use effect of the overall device.

[0058] Advantage four, by setting the two T-shaped rods 273 to reciprocally swing around the axis of the hollow cylinder 27, under the reciprocating swing action of the two T-shaped rods 273, the two T-shaped rods 273 agitate back and forth the large particle impurities located on one side of the flat plate member 233, further dispersing the large particle impurities, making the few grain particles doped between the large particle impurities pass through the sieve holes on the sieve cylinder 23 and fall inside the first discharge hopper 28, and the second spiral member 232 drives the large particle impurities to continue moving along the inner wall of the sieve cylinder 23 towards the first partition plate 21 until the large particle impurities pass through the sieve cylinder 23 and the first partition plate 21 and fall inside the second discharge hopper 281.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for treating grain impurities in a static grain dryer, characterized in that Including: A dryer body (1), on the upper surface of which an E-shaped frame (11) is fixedly connected; A impurity removal box (2), the lower surface of which is fixedly connected to the upper surface of the E-shaped frame (11). The bottom of the impurity removal box (2) is open. A feed port (20) is provided on the outer surface of the impurity removal box (2). A first partition (21) and a second partition (22) are fixedly connected to the inner wall of the impurity removal box (2) respectively. The second partition (22) is located on the side of the first partition (21) away from the feed port (20). A sieve cylinder (23) is rotatably connected between the first partition (21) and the impurity removal box (2). Opposite sides inside the impurity removal box (2) are fixedly connected with a central shaft (24). The central shaft (24) penetrates through the sieve cylinder (23), the first partition (21) and the second partition (22). A rotating ring (25) is rotatably arranged on the circumferential outer surface of the central shaft (24). A rotating tooth block (26) is rotatably connected to the center of the second partition (22); Wherein, during the process of the rotating tooth block (26) rotating around the central shaft (24), the sieve cylinder (23) drives the material to move along the sieve cylinder (23) towards the first partition (21) through the spiral member provided on its inner wall, and the rotating ring (25) stirs and spreads the flowing material through the baffle plate (251) provided on its circumferential outer surface.

2. The grain impurity treatment device of a static grain dryer according to claim 1, wherein: The spiral member includes a first spiral member (231), a second spiral member (232) and a flat plate member (233). The first spiral member (231) is fixedly connected to the inner wall of the sieve cylinder (23) at the end close to the feed port (20). The second spiral member (232) and the flat plate member (233) are fixedly connected to the inner wall of the sieve cylinder (23) at the end close to the first partition (21).

3. The grain impurity treatment device of a static grain dryer according to claim 1, characterized in that: One end of the rotating ring (25) close to the first partition (21) is fixedly connected with a connecting rod (252). One end of the connecting rod (252) away from the rotating ring (25) is fixedly connected with a rotating cylinder (253). The rotating cylinder (253) is rotatably sleeved on the circumferential outer surface of the central shaft (24). One end of the rotating cylinder (253) away from the rotating ring (25) sequentially penetrates through the first partition (21) and the rotating tooth block (26) and extends between the second partition (22) and the impurity removal box (2). A triangular block (254) is fixedly connected to the circumferential outer surface of the rotating cylinder (253). One end of the triangular block (254) away from the rotating cylinder (253) is rotatably connected with a push-pull rod (255). One end of the push-pull rod (255) away from the triangular block (254) is rotatably connected with a slider (256).

4. A grain impurity treatment device for a static grain dryer according to claim 3, characterized in that: A vertical sliding groove (2561) is provided on the inner wall of the impurity removal box (2). The slider (256) is slidably connected to the impurity removal box (2) through the vertical sliding groove (2561). A square sliding rail (2562) is fixedly connected to the side of the rotating tooth block (26) away from the first partition (21). The slider (256) is slidably connected to the rotating tooth block (26) through the square sliding rail (2562).

5. The grain impurity treatment device of a static grain dryer according to claim 3, characterized in that: The inner wall of the sieve cylinder (23) is fixedly connected with a mounting rod (271). One end of the mounting rod (271) far away from the sieve cylinder (23) is fixedly connected with a hollow cylinder (27). The inner wall of the hollow cylinder (27) is rotatably connected with a shaft rod (272). Both ends of the shaft rod (272) are fixedly connected with a T-shaped rod (273).

6. The grain impurity treatment device of a static grain dryer according to claim 5, characterized in that: A four-corner slide rail (275) is rotatably sleeved on the circumferential outer surface of the rotating cylinder (253). A fixing rod (274) is fixedly connected to the circumferential outer surface of the central shaft (24). One end of the fixing rod (274) far away from the central shaft (24) is fixedly connected with the four-corner slide rail (275). One end of the T-shaped rod (273) far away from the sieve cylinder (23) is slidably connected with the four-corner slide rail (275); Wherein, the four-corner slide rail (275) includes a concave rail (2751) and a convex rail (2752) connected end to end. During the process that the T-shaped rod (273) is slidably connected with the concave rail (2751), the T-shaped rod (273) reciprocally rotates around the axis of the hollow cylinder (27). During the process that the T-shaped rod (273) is slidably connected with the convex rail (2752), the positions of the T-shaped rod (273) and the hollow cylinder (27) remain relatively fixed.

7. A grain impurity treatment device for a static grain dryer according to claim 1, characterized in that: The bottom of the impurity removal box (2) is respectively fixedly connected with a first feeding hopper (28) and a second feeding hopper (281). The first feeding hopper (28) is located directly below the sieve cylinder (23). The second feeding hopper (281) is located directly below the first partition plate (21) and the second partition plate (22). The bottom end of the first feeding hopper (28) is fixedly communicated with the upper surface of the dryer body (1).

8. A device for processing grain impurities in a static grain dryer according to claim 1, characterized in that: A driving motor (3) is fixedly connected to one side of the impurity removal box (2) far away from the feeding port (20). A driving gear (31) is rotatably connected to one side of the second partition plate (22) far away from the first partition plate (21). The driving gear (31) is meshed with a rotating tooth block (26). The output end of the driving motor (3) penetrates through the impurity removal box (2) and is fixedly connected with the driving gear (31). A rotating ring part (32) is fixedly connected between the rotating tooth block (26) and the sieve cylinder (23).

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