JP2020063850A - Grain dryer - Google Patents

Abstract

To control damage to an opposing part of a restrictor.SOLUTION: A grain dryer comprises opposing plates 70C of leak prevention shutters 70, disposed to face a peripheral wall of a shutter drum 30 so that the leak prevention shutters 70 restrict leak of grain therefrom in a lower direction. Since the opposing plate 70C is made from metal, damage of the opposing plate 70C can be controlled.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a grain drying device in which grains are dried.

  In the grain drying device described in Patent Document 1 below, the seal member of the support member faces the outer periphery of the shutter drum, and leakage of the grain from the outer periphery of the shutter drum to the lower side of the shutter drum is prevented. The support member (including the seal member) limits.

  Here, in this grain drying device, the seal member is made of a flexible material.

JP, 10-185431, A

  The present invention has been made in consideration of the above facts, and an object thereof is to obtain a grain drying device capable of suppressing damage to the facing portion of the restriction body.

  The grain drying apparatus according to claim 1 is provided with an apparatus main body for drying grains, and an opening chamber that is provided in the apparatus main body and has a circular outer circumference and is open to the outer circumference. By this, a grain is discharged from one side to the other side through the open chamber, and a facing portion that is rigid and faces the outer circumference of the grain is provided. A restricting body for restricting leakage of the grain to the other side through the outside of the outer periphery of the discharging body.

  A grain drying apparatus according to a second aspect is the grain drying apparatus according to the first aspect, wherein the facing portion is arranged close to the outer periphery of the discharge body.

  A grain drying device according to a third aspect is the grain drying device according to the first or second aspect, wherein the facing portion is stretched in a direction from one side to the other side.

  A grain drying device according to a fourth aspect is the grain drying device according to any one of the first to third aspects, wherein the facing portion is arranged on one side of a central axis of the discharge body.

  A grain drying device according to a fifth aspect is the grain drying device according to any one of the first to fourth aspects, further comprising a reinforcing portion that is provided inside the limiting body and reinforces the limiting body.

  In the grain drying device according to the first aspect, the grain is dried in the device body. Further, the device body is provided with a discharge body, and the discharge body is formed into a circular outer peripheral shape. Further, the open chamber of the discharge body is opened to the outside of the outer periphery of the discharge body, and by rotating the discharge body, the grain is discharged from one side of the discharge body to the other side through the open chamber.

  Further, the facing portion of the restricting body is opposed to the outer circumference of the discharging body, and the restricting body restricts leakage of the grain from one side of the discharging body to the other side through the outer circumference of the discharging body.

  Here, the facing portion of the limiting body has rigidity. For this reason, damage to the facing portion can be suppressed.

  In the grain drying device according to the second aspect, the facing portion is arranged close to the outer circumference of the discharge body. Therefore, it is possible to suppress damage to the facing portion due to the discharge body.

  In the grain drying device according to the third aspect, the facing portion is stretched in the direction from one side to the other side. Therefore, the minimum distance between the facing portion and the outer periphery of the discharge body can be reduced, and the leakage of the grain from one side of the discharge body to the other side through the outer periphery of the discharge body can be appropriately limited.

  In the grain drying device according to the fourth aspect, the facing portion is arranged on one side of the central axis of the discharge body. For this reason, even when the restricting body is displaced to the other side by the load of the grain, it is possible to suppress separation of the facing portion from the outer circumference of the discharge body, and the outside of the outer circumference of the discharge body from one side to the other side of the discharge body Can limit grain leakage.

  In the grain drying device according to the fifth aspect, the reinforcing portion is provided in the limiting body, and the reinforcing portion reinforces the limiting body. Therefore, the displacement of the restricting body to the other side due to the load of the grain can be suppressed.

It is sectional drawing seen from the front which shows the grain drying apparatus which concerns on embodiment of this invention. It is sectional drawing seen from the left which shows the grain drying apparatus which concerns on embodiment of this invention. It is sectional drawing seen from the front which shows the shutter drum etc. of the grain drying apparatus which concerns on embodiment of this invention.

  1 is a cross-sectional view of a circulation type grain drying device 10 according to an embodiment of the present invention as seen from the front, and FIG. 2 is a cross-sectional view of the grain drying device 10 as seen from the left side. It is shown in. In the drawings, the front of the grain drying device 10 is indicated by an arrow FR, the right side of the grain drying device 10 is indicated by an arrow RH, and the upper side of the grain drying device 10 is indicated by an arrow UP.

  As shown in FIGS. 1 and 2, the grain drying device 10 according to the present embodiment includes a machine body 12 as a device body, and the machine body 12 is in the shape of a rectangular parallelepiped box that is high in the vertical direction and long in the front-back direction.

  The upper part of the machine body 12 is a grain tank 14 as a storage chamber, and the grain K (for example, paddy, wheat or soybean) is stored (stored) in the grain tank 14.

  A pair of exhaust passage partition walls 16 are provided in the lower portion of the machine body 12, and each exhaust passage partition wall 16 has air permeability. Each of the exhaust passage partition walls 16 is bridged between the front plate and the rear face plate of the machine body 12, and is inclined downward from each side plate of the machine body 12 toward the center in the left-right direction. The partition wall 16 has a funnel shape.

  Inside the pair of exhaust passage partition walls 16 in the left-right direction, a substantially rhombus-shaped wind tunnel plate 18 is provided, and the wind tunnel plate 18 has air permeability. The wind tunnel plate 18 is bridged between the front plate and the rear plate of the airframe 12, and the lower part of the wind tunnel plate 18 is parallel to each of the opposing exhaust passage partition walls 16. The inside of the plate 18 serves as an air passage 20. A rectangular outside air inlet 22 is formed on the front plate of the machine body 12, and the outside air inlet 22 communicates with the air passage 20.

  Between the upper part of the wind tunnel plate 18 and the upper part of each exhaust passage partition wall 16, there is provided a substantially rhombic cylindrical air guide passage partition wall 24, and each air guide passage partition wall 24 has air permeability. is doing. Each air duct partition 24 is bridged between the front plate and the rear plate of the machine body 12, and an air duct 26 is formed inside each air duct partition 24. The lower portion of each air duct partition 24 is parallel to the opposing exhaust duct partition 16 and parallel to the opposing wind tunnel plate 18.

  To the left and right of the wind tunnel plate 18, between the wind tunnel plate 18 and the air duct partition wall 24, between the air duct partition wall 24 and the exhaust duct wall 16, and between the wind tunnel plate 18 and the exhaust duct wall. Downflow paths 28 as a supply section (flow path section, drying path) are formed between the airflow path partition walls 16 and the grain K stored in the grain tank 14 flows down in each downflow path 28. To be done.

  A cylindrical container-shaped shutter drum 30 as a discharge body (feeding body) is provided between the lower ends of the pair of flow-down passages 28, and the outer periphery of the shutter drum 30 is circular when viewed in the axial direction. . A cylindrical rotation shaft 30A is coaxially provided on the shutter drum 30, and the rotation shaft 30A is fixed to a front wall and a rear wall of the shutter drum 30. The rotary shaft 30A penetrates through the front wall and the rear wall of the shutter drum 30 and is bridged between the front plate and the rear plate of the machine body 12. The shutter drum 30 rotates about the rotary shaft 30A. Has been enabled.

  The inside of the shutter drum 30 is evenly divided in the center in the front-rear direction, and the front side portion and the rear side portion of the shutter drum 30 are respectively formed as inflow chambers 32A as open chambers.

  On the peripheral wall of the shutter drum 30, elongated rectangular slits 32B as openings are formed so as to penetrate in the front portion and the rear portion, respectively, and each slit 32B extends in the axial direction of the shutter drum 30, Each inflow chamber 32A is opened to the outside (outer peripheral side) in the radial direction of the shutter drum 30. The pair of slits 32B are arranged on the opposite sides of the shutter drum 30 in the circumferential direction (rotational direction), and the pair of slits 32B are arranged at equal intervals in the circumferential direction of the shutter drum 30.

  When the peripheral wall of the shutter drum 30 (the portion other than the slit 32B) faces the lower surface of the downflow passage 28, the peripheral wall of the shutter drum 30 substantially closes the lower surface of the downflow passage 28. When the slit 32B is opposed to the lower surface of the downflow passage 28, the grain K is flown (supplied) from the lower surface (upper side (one side)) of the downflow path 28 into the inflow chamber 32A through the slit 32B. Furthermore, when the slit 32B is directed downward while the grain K is flowing into the inflow chamber 32A, the grain K is discharged (downflow) from the inflow chamber 32A to the lower side (the other side) through the slit 32B. To be done. As a result, when the shutter drum 30 is rotated, the grain K flows into and out of the inflow chamber 32A through the slit 32B, and the grain K is discharged (delivered) from the shutter drum 30.

  A gap 34 is formed between the lower end of each exhaust passage partition wall 16 and the peripheral wall of the shutter drum 30, and the grain K can flow down from the lower end of the downflow passage 28 through the gap 34.

  Metal shutters 70 (see FIG. 3) are provided as restrictors on the left and right sides of the shutter drum 30, and the shutters 70 are provided below the lower end of the exhaust passage partition wall 16. , Is stretched in the front-back direction.

  The leakage shutter 70 is provided with a shutter frame 72 having a substantially rectangular tubular shape as a limiting member, and a front wall and a rear wall are fixed to the front surface and the rear surface of the shutter frame 72, respectively. A cylindrical support shaft 74 is provided in the shutter frame 72 substantially coaxially, and the support shaft 74 is fixed to a front wall and a rear wall of the shutter frame 72. The support shaft 74 penetrates the front wall and the rear wall of the shutter frame 72 and is bridged between the front plate and the rear plate of the machine body 12, and the leakage shutter 70 has the support shaft 74 as the center. It can be rotated in the discharge direction (direction of arrow A in FIG. 3).

  The shutter frame 72 is provided with a long plate-shaped inner frame plate 72A (steel plate) as a first part, and the lower part of the inner frame plate 72A is directed downward toward the shutter drum 30 side. It has been extended. The middle portion of the inner frame plate 72A extends in the upward direction as it goes to the shutter drum 30 side, and the upper portion of the inner frame plate 72A extends to the shutter drum 30 side.

  The shutter frame 72 is provided with a long plate-shaped outer frame plate 72B (steel plate) as a second part, and the inner frame plate 72A is arranged inside the outer frame plate 72B. A lower portion of the outer frame plate 72B extends in a downward direction toward the shutter drum 30 side, and a lower end portion of the outer frame plate 72B is fastened and fixed to a lower portion of the inner frame plate 72A. . A portion of the outer frame plate 72B on the upper side and on the side opposite to the shutter drum 30 is formed as a projecting plate 70A having an L-shaped cross section as an inclined portion, and the projecting plate 70A projects upward. A flat plate-shaped limiting plate 70B as a limiting portion is provided on the upper side of the outer frame plate 72B and on the shutter drum 30 side. The limiting plate 70B extends from the projecting plate 70A to the shutter drum 30 side. , Is superposed on the upper portion of the inner frame plate 72A. A flat plate-shaped counter plate 70C as a counter portion is provided at an end of the outer frame plate 72B on the shutter drum 30 side. The counter plate 70C extends downward from the limiting plate 70B and moves vertically. It is arranged. The facing plate 70C faces the outer peripheral surface of the shutter drum 30, and the upper end and the lower end of the facing plate 70C are arranged above and below the central axis O of the shutter drum 30 (the central axis of the rotating shaft 30A). Has been done. The facing plate 70C is close to the peripheral wall of the shutter drum 30, and the grain K (grain) cannot pass through the minimum gap between the facing plate 70C and the peripheral wall of the shutter drum 30. The projecting plate 70A, the limiting plate 70B, and the facing plate 70C close the lower side of the gap 34 between the lower end of the exhaust passage partition wall 16 and the peripheral wall of the shutter drum 30, and therefore the grain K of the downflow passage 28 is a gap. Leakage down from 34 is restricted.

  A long plate-shaped reinforcing plate 76 (steel plate) as a reinforcing portion is provided in the shutter frame 72, and a lower portion of the reinforcing plate 76 extends downward toward the shutter drum 30. Has been done. The lower part of the reinforcing plate 76 is arranged between the lower part of the inner frame plate 72A and the lower end part of the outer frame plate 72B, and is fastened and fixed to the lower part of the inner frame plate 72A and the lower end part of the outer frame plate 72B. . The portion other than the lower portion of the reinforcing plate 76 extends upward and penetrates the support shaft 74, and the upper end of the reinforcing plate 76 is in contact with the upper end of the projecting plate 70A. Therefore, the reinforcing plate 76 is bridged in the shutter frame 72 in the vertical direction to reinforce the shutter frame 72 in the vertical direction.

  Below the pair of exhaust passage partition walls 16, below the pair of leakage shutters 70, a pair of tension flow plates 38 are provided, and each tension flow plate 38 serves as a front plate of the machine body 12. It is bridged between the back plate. The pair of stretched flow plates 38 are inclined downward from each side plate of the machine body 12 toward the center in the left-right direction, and have a funnel shape. Further, an air exhaust passage 40 is provided between each stretched flow plate 38 and each exhaust air passage partition wall 16.

  At the bottom of each side plate of the machine body 12, stake hoppers 42 are provided so as to be openable and closable, and by opening the stake hoppers 42, grain K can be stuck (supplied) into the machine body 12. There is. Further, the grain K discharged from the shutter drum 30 or the grain K stretched from the stretching hopper 42 is flowed down between the lower ends of the pair of stretching flow plates 38.

  A lower screw conveyor 44, which constitutes a conveying means, is provided between the lower ends of the stretched flow plates 38. The lower screw conveyor 44 has its rear end fixed to the rear plate of the machine body 12 and its front end. The front surface of 12 is projected forward. The lower screw conveyor 44 has a long gutter-shaped lower transport gutter 44A, and the upper surface and the front surface of the lower transport gutter 44A outside the machine body 12 are closed. The lower transport gutter 44A in the machine body 12 is communicated with the air exhaust passage 40, and the grain K that has reached between the lower ends of the pair of siding flow boards 38 flows down into the lower transport gutter 44A. A lower screw 44B is provided in the lower transport gutter 44A, and the grain K that has flowed into the lower transport gutter 44A is transported forward by the lower screw 44B.

  On the right side in front of the machine body 12, an elevating machine 46 that constitutes a conveying means is erected, and the upper part of the elevating machine 46 projects above the top plate of the machine body 12. An endless belt 46A is arranged in the elevator 46, and buckets 46B are attached to the endless belt 46A at regular intervals. The lower end of the elevator 46 communicates with the front end of the lower transport gutter 44A, and the grains K discharged from the lower screw conveyor 44 (the front end of the lower transport gutter 44A) and accumulated on the lower end of the elevator 46 are endless. By the rotation of the belt 46A, the bucket 46B lifts and conveys it to the upper end in the elevator 46.

  An upper screw conveyor 50 that constitutes a conveying means is provided at the upper end of the machine body 12. The rear end of the upper screw conveyor 50 is arranged directly below the center of the upper plate of the machine body 12, and the front end of the upper screw conveyor 50 is in front of the machine body 12. It projects from the face plate. The upper screw conveyor 50 has a long gutter-shaped upper transport gutter 50A, and a rear end lower surface of the upper transport gutter 50A is open. The front end in the upper transport gutter 50A is communicated with the upper end in the elevator 46, and the grain K transported to the upper end in the elevator 46 flows down to the front end in the upper transport gutter 50A. An upper screw 50B is provided in the upper transport gutter 50A, and the grain K that has flowed down to the front end in the upper transport gutter 50A is transported backward by the upper screw 50B.

  The front end of the upper transfer gutter 50A can communicate with the discharge pipe 52 by opening the discharge valve 52A. When the front end of the upper transfer gutter 50A communicates with the discharge pipe 52, the inside of the upper transfer gutter 50A is closed. The grain K flowing down to the front end of the grain is discharged from the grain drying device 10 through the discharge pipe 52.

  Below the rear end of the upper screw conveyor 50, a disk-shaped leveling device 54 that constitutes a conveying means is rotatably provided, and is conveyed to the rear end of the upper screw conveyor 50 (the rear end in the upper conveying trough 50A). The crushed grain K flows down onto the upper surface of the rotating equalizer 54, and is evenly distributed by the centrifugal force into the grain tub 14.

  A rectangular parallelepiped box-shaped furnace case 56 is provided in the lower left portion of the front surface of the machine body 12, and a plurality of slit-shaped outside air inlets 56A are formed in the front plate of the furnace case 56. The rear surface plate of the furnace case 56 is partially opened, and the inside of the furnace case 56 communicates with the outside air inlet 22. The left side portion of the lower surface plate of the furnace case 56 is open.

  A rectangular parallelepiped box-shaped burner case 58 is provided in the lower part of the front surface of the machine body 12 at the left side portion immediately below the furnace case 56. The upper surface plate of the burner case 58 is partially open, and the inside of the burner case 58 communicates with the inside of the furnace case 56. Further, a burner 60 as hot air generating means is provided in the burner case 58.

  A blower mount 62 in the shape of a rectangular parallelepiped box is provided on the lower rear surface of the machine body 12, and the inside of the blower mount 62 communicates with each of the exhaust passages 40. A front end of a blower 64 is attached to the rear surface of the blower mount 62, and one end of a flexible exhaust duct 66 is attached to the rear end of the blower 64.

  As a result, by driving the blower 64, ambient air at ambient temperature (normal temperature air) is sucked into the blower passage 20 from the outside air inlet 56A through the inside of the furnace case 56 and the outside air inlet 22, and further the wind tunnel plate. The air is sucked and blown into the blower 64 through the 18, the downflow passages 28, the exhaust passage partition walls 16, the exhaust passages 40, and the blower mount 62, and is exhausted through the exhaust duct 66. Further, the outside air blown on the upper part of each downflow passage 28 passes through each air duct partition wall 24 and each air duct 26.

  Further, the outside air introduced into the furnace case 56 through the outside air inlet 56A is turned into hot air (dry air) heated to a high temperature by the burner 60 and is blown to each downflow path 28, whereby each downflow path 28 Grain K is dried.

  An operation panel 68 (control device) as a control means is provided on the lower part of the front surface of the machine body 12 just above the furnace case 56, and the operation panel 68 is connected to each drive unit of the grain drying device 10. . The operation panel 68 is provided with various operation switches (not shown) such as a stake operation switch, a dry operation switch, and a discharge operation switch. By operating various operation switches of the operation panel 68, the grain The drying device 10 is controlled by the operation panel 68.

  Next, the operation of this embodiment will be described.

  In the grain drying apparatus 10 having the above configuration, when the squeeze operation switch of the operation panel 68 is operated, the lower screw conveyor 44, the elevator 46, the upper screw conveyor 50, and the leveling machine 54 are driven, and the stake operation is performed. The tensioning hopper 42 is opened and the harvested grain K is stretched into the machine body 12. The grain K stretched into the machine body 12 is guided to the lower screw conveyor 44 by the stretching flow plate 38, passes through the elevator 46, the upper screw conveyor 50, and the leveling machine 54 from the lower screw conveyor 44 to the inside of the grain tank 14 and It is conveyed (stored) to each of the downflow paths 28.

  When the dry operation switch of the operation panel 68 is operated, the shutter drum 30, the lower screw conveyor 44, the elevator 46, the upper screw conveyor 50, the leveling machine 54 and the blower 64 are driven, and the burner 60 is ignited to perform the dry operation. It

  In the drying operation, the grain K stored in the grain tank 14 is returned to the grain tank 14 via each of the downflow paths 28, the shutter drum 30, the lower screw conveyor 44, the elevator 46, the upper screw conveyor 50, and the leveling machine 54, The grain K is circulated in the grain drying device 10. Further, by driving the blower 64, hot air is generated by the burner 60 from the outside air sucked and introduced into the furnace case 56 from the outside air inlet 56A, and this hot air is passed through the outside air inlet 22, the air passage 20 and the wind tunnel plate 18. The grain K is dried by being sucked and blown into each of the flow-down paths 28 and absorbing the moisture of the grain K of each of the flow-down paths 28. The hot air after absorbing the moisture of the grain K is sucked and blown into the blower 64 through each of the exhaust passage partition walls 16, each of the exhaust passages 40, and the blower mount 62, and is further discharged through the exhaust duct 66. To be done.

  When the discharge operation switch of the operation panel 68 is operated, the shutter drum 30, the lower screw conveyor 44, the elevator 46, the upper screw conveyor 50, and the leveling machine 54 are driven to perform discharge operation, and further, the discharge valve 52A is opened to perform upper conveyance. The grain K is discharged from the grain drying device 10 through the discharge pipe 52 by connecting the front end of the trough 50A to the discharge pipe 52.

  By the way, the projecting plate 70A, the limiting plate 70B, and the facing plate 70C in the shutter frame 72 of the leak-proof shutter 70 close the lower side of the gap 34 between the lower end of the exhaust passage partition wall 16 and the peripheral wall of the shutter drum 30, and Therefore, the grain K in the flow-down path 28 is restricted from leaking downward from the gap 34.

  Further, when the leakage shutter 70 is rotated around the support shaft 74 in the discharge direction, the projecting plate 70A, the limiting plate 70B, and the facing plate 70C are rotated downward, so that the lower end of the exhaust passage partition wall 16 is formed. By opening the lower side of the gap 34 with the peripheral wall of the shutter drum 30, the grain K in the downflow path 28 is discharged downward from the gap 34 and is flowed down to the lower screw conveyor 44. Therefore, it is possible to prevent the grain K from remaining at the lower end of the flow-down path 28.

  Here, the counter plate 70C of the leakage shutter 70 is made of metal and has rigidity. Therefore, it is possible to prevent the facing plate 70C from being bitten by a mouse, for example, and it is possible to prevent damage to the facing plate 70C.

  Further, the counter plate 70C of the leakage shutter 70 is close to (not in contact with) the peripheral wall of the shutter drum 30. Therefore, the opposing plate 70C can be prevented from being worn by the peripheral wall of the shutter drum 30, and the opposing plate 70C can be prevented from being damaged by the shutter drum 30.

  Further, the counter plate 70C of the leakage shutter 70 is arranged in the vertical direction, and the upper end and the lower end of the counter plate 70C are arranged above and below the central axis O of the shutter drum 30, respectively. Therefore, the minimum gap between the counter plate 70C and the peripheral wall of the shutter drum 30 can be reduced, and the projecting plate 70A, the limiting plate 70B, and the counter plate 70C of the leakage shutter 70 are the lower end of the exhaust passage partition wall 16 and the peripheral wall of the shutter drum 30. The lower side of the gap 34 between and can be appropriately closed, and the grain K in the flow-down path 28 can be appropriately restricted from leaking downward from the gap 34.

  Further, as described above, the upper end of the counter plate 70C of the leak-tight shutter 70 is arranged above the central axis O of the shutter drum 30. For this reason, the load of the grain K from the flow-down path 28 acts on the leakage shutter 70, so that the leakage shutter 70 bends downward in the longitudinal direction (front-back direction), and the facing plate 70C is displaced downward. Even in such a case, it is possible to maintain the approaching state of the facing plate 70C to the peripheral wall of the shutter drum 30. As a result, it is possible to maintain the closed state of the lower side of the gap 34 by the projecting plate 70A, the limiting plate 70B, and the facing plate 70C of the leakage shutter 70, and restrict the grain K of the flow-down passage 28 from leaking downward from the gap 34. it can.

  Further, in the leakage shutter 70, the counter plate 70C is bent with respect to the limiting plate 70B, so that the rigidity of the shutter frame 72 in the vertical direction is increased. For this reason, it is possible to prevent the leakage shutter 70 from bending downward in the longitudinal direction due to the load of the grain K from the flow-down path 28, and it is possible to appropriately maintain the approaching state of the counter plate 70C to the peripheral wall of the shutter drum 30, The grain K in the flow-down path 28 can be appropriately restricted from leaking downward from the gap 34.

  Further, in the leak prevention shutter 70, the reinforcing plate 76 is bridged in the shutter frame 72 in the vertical direction to reinforce the shutter frame 72 in the vertical direction. Therefore, it is possible to further suppress the leakage shutter 70 from being bent downward in the longitudinal direction due to the load of the grain K from the flow-down path 28, and it is possible to more appropriately maintain the approaching state of the facing plate 70C to the peripheral wall of the shutter drum 30. Therefore, the grain K in the flow-down passage 28 can be more appropriately restricted from leaking out from the gap 34 to the lower side.

10 Grain drying device 12 Airframe (device main body)
30 Shutter drum (ejector)
32A inflow chamber (open chamber)
70 Leakage shutter (restriction body)
70C Opposing plate (opposing part)
76 Reinforcement plate (reinforcement part)
K grain

Claims (5)

A device body for drying the grain,
An opening chamber is provided in the main body of the apparatus, which has a circular outer circumference and is opened to the outside of the outer circumference. By rotating, the grain is discharged from one side to the other side through the opening chamber. An ejector,
A limiter that has rigidity and is provided with a facing portion that faces the outer circumference of the discharge body, and that restricts leakage of grain from the outer side of the discharge body to the other side from the outer circumference of the discharge body,
Grain dryer equipped with.   The grain drying device according to claim 1, wherein the facing portion is disposed close to the outer periphery of the discharge body.   The grain drying device according to claim 1 or 2, wherein the facing portion is stretched in a direction from one side to the other side.   The grain drying device according to any one of claims 1 to 3, wherein the facing portion is arranged on one side of a central axis of the discharge body.   The grain drying device according to any one of claims 1 to 4, further comprising a reinforcing portion that is provided inside the restriction body and reinforces the restriction body.