JP2020003139A - Grain dryer - Google Patents

Abstract

To provide a grain dryer capable of improving the accuracy of detecting an amount of grain charged, while reducing noise and controlling a load on grain.SOLUTION: A grain dryer 101 for circulating/drying grain, provided with a grain diffusion device 111 that supplies a storage section 102 with grain, with the grain diffusion device 111 comprising a slide member 114 slidable along the longitudinal direction of an upper screw 109, and a grain feed member 112 connected to the slide member 114 to travel with the slide member 114 along the longitudinal direction of the upper screw 109 to drop and feed grain received from the upper screw 109 into the storage section 102, is characterized in that the slide member 114 comprises a drive mechanism 114b that causes the slide member 114 to reciprocally slide in the forward/backward direction within a specified movable range, and thereby noise can be reduced, a load on the grain can be controlled, and the accuracy of detecting the amount of the grain charged can be improved.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a grain circulation type grain dryer.

This kind of grain circulation type grain dryer is used for drying grains such as beans, wheat, and paddy, and for example, one described in Patent Document 1 is known.
As shown in FIG. 8, in the grain dryer 1 described in Patent Document 1, a storage unit 2, a drying unit 3, and a grain collection unit 4 are sequentially formed in the machine from the top, and the storage unit 2 The hot air generated by the combustion burner 5 and the exhaust fan 6 provided in the drying section 3 is blown down while drying the kernels in the drying section 3 and the grain collecting section 4 in this order. Is configured.
A grain raising machine 7 that lifts and conveys the grains from the lower part of the machine to the upper part thereof is provided on the outer peripheral part of the machine body. It is lifted and transported from the bottom to the top. The grains lifted and conveyed to the upper part of the machine by the grain raising machine 7 are conveyed by a screw conveyor type upper spiral 8 provided on the upper part of the machine and returned to the storage unit 2. At this time, in order to uniformly spread the kernels into the storage unit 2, the rotary drive type diffusion plate 9 provided on the storage unit 2 receives the kernels from the upper spiral 8 and diffuses the kernels into the storage unit 2. It is configured to supply.

JP-A-2005-210018

  However, in the conventional grain dryer 1, the grains diffused by the diffusion board 9 collide with the inner wall of the storage chamber 2 and cause noise. In addition, there is a problem that the load on the kernel increases due to the impact of the collision.

  Further, in the rotary drive type diffusion plate 9, the frictional force acting on the kernel changes depending on the type and properties of the kernel (ratio of mixing of straw waste, ratio of water content, etc.), whereby the kernel is diffused. A change occurs in the distance. For example, when the grain is wheat, the grain is difficult to slip on the diffusion board 9, so that the grain is spread in a large distance, and as shown by a solid line A in FIG. The upper surface shape of the stored grain is a deep bowl shape, but when the grain is a bean, the grain is easily rolled on the diffusion plate 9, so that the diffusion distance is small, as shown by a solid line B in FIG. In addition, the upper surface of the sediment-stored grains has a shallow dish shape. As described above, in the conventional grain dryer, the shape of the upper surface of the grain deposited and stored in the storage unit 2 changes depending on the type and properties of the grain, and as a result, the inside of the storage unit 2 is changed. It has been difficult to accurately determine the amount of intrusion when detecting the amount of intrusion by detecting the height of the deposited grains with a sensor. As a result, for example, when the drying operation is performed by controlling the combustion amount of the combustion burner in accordance with the amount of stuffing of the grain, there is a problem that the drying accuracy of the grain is reduced.

  Therefore, an object of the present invention is to provide a grain dryer capable of reducing noise and suppressing the load on grains, and enabling uniform penetration into a storage unit regardless of the type and properties of grains. Things.

Such objects of the present invention are:
A storage unit that stores the grains, a drying unit that blows hot air onto the grains flowing down from the storage unit to dry the grains, and a grain collection unit that collects the grains that have passed through the drying unit,
In the grain dryer that circulates and recycles the grains that have passed through the drying section and the grain collection section from the storage section to the storage section,
Receiving grains from the upper spiral conveying the grains to the upper part of the storage unit, provided with a grain diffusion device that supplies the inside of the storage unit,
The grain diffusion device, a slide member slidable along the longitudinal direction of the upper spiral,
A grain supply member connected to the slide member, moving along the longitudinal direction of the upper spiral together with the slide member, and supplying the kernel received from the upper spiral to the storage unit,
Furthermore, the above-mentioned slide member is provided with a drive mechanism which has a drive mechanism which slides the slide member back and forth within a predetermined movable range.

  According to the present invention, the reciprocating movement of the grain supply member of the grain diffusion device makes it possible to drop and supply the grains into the storage section while diffusing the grains, thereby preventing collision of the grains with the storage section, The noise can be reduced, the load on the grain can be reduced, and the grain can be evenly sewn into the storage unit regardless of the type and properties of the grain.

In a further preferred embodiment of the present invention, it comprises means for setting the type of cereal,
The slide member, when the diffusion supply of the grain, when the set grain type is soybean, the set grain type is configured to have a smaller movable range than when the set grain type is rice and wheat. Features.

  According to this further preferred embodiment of the present invention, in the case of soybean, since it is hard to be damaged and easily rolled backward by supplying it to the transport start end side, it is easy to stick into the entire front and rear direction of the storage section.

  In a further preferred embodiment of the present invention, the grain supply member comprises: a grain guide plate that guides the kernel received from the upper spiral to the storage unit and supplies the kernel drop; and swings the grain guide plate to the left and right. A left and right swing mechanism is provided.

  In a further preferred embodiment of the present invention, the grains can be diffused and supplied in the left-right direction of the storage section by the left and right swing mechanism, so that more uniform insertion into the storage section is possible.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing a noise and suppressing the load to a grain, the grain drying machine which can improve the detection accuracy of a stuck amount can be provided.

It is a front view of the grain dryer concerning the embodiment of the present invention. It is a side view inside the grain dryer of FIG. FIG. 2 is an exploded perspective view of a grain circulation mechanism of the grain dryer of FIG. 1. It is sectional drawing of the principal part of an upper conveyance apparatus and a grain spreading apparatus of FIG. It is a bottom view of the principal part of the upper conveyance apparatus and the grain spreading apparatus of FIG. It is a schematic block diagram of the control apparatus of a grain dryer. (A) (B) It is a figure for demonstrating operation | movement of a grain supply member by the control apparatus of FIG. It is a side view inside the conventional grain dryer.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a front view of the grain dryer 101 according to the embodiment of the present invention, and FIG. 2 is a side view of the inside of the grain dryer 101 of FIG.

As shown in FIG. 1, the grain dryer 101 has a storage unit 102, a drying unit 103, and a grain collection unit 104 formed therein in this order from the top as shown in FIG. 1. A grain raising machine 107 that lifts and transports the grains from the lower part of the machine to the upper part is provided.
The grain dryer 101 having the above-described configuration allows the combustion of the combustion burner 105 and the exhaust fan 106 while flowing the grains from the storage unit 102 at the upper part of the machine through the drying unit 103 to the grain collection unit 104. The drying is performed by blowing hot air generated by the drying unit 103 on the drying unit 103, and the grains sent to the collecting unit 104 are recycled and circulated to the storage unit 102. In the following description, the right side in FIG.

  Above the storage unit 102, there is provided an upper transfer device 108 for transferring the grains lifted and transported from the lower part of the machine to the upper part by the grain raising machine 107 to the upper part of the storage part 102. The upper transfer device 108 includes a screw conveyor type upper spiral 109 and an upper transfer door gutter 110 in which the upper spiral 109 is rotatably housed. At the lower part of the upper transfer device 108, there is provided a grain diffusion device 111 which receives the grains from the upper spiral 109 and diffuses and supplies them into the storage unit 102.

  Further, a far-infrared radiator 132 is disposed in the hot air chamber 133 of the drying unit 103 for drying the grains. As shown in FIG. 2, the far-infrared radiator 132 is disposed at a position facing the combustion burner 105 and is configured to promote the drying of the grain also by far-infrared rays emitted from the far-infrared radiator 132. Further, a hot air outlet 132 a for discharging the hot air that has passed through the far infrared radiator 132 to the hot air chamber 133 is formed at the tip of the far infrared radiator 132.

FIG. 3 is an exploded perspective view of the grain circulation mechanism of the grain dryer 101 of FIG.
At the grain outlet of the drying unit 103, there are provided a rotary valve 134 for rotating a predetermined amount of grains to the grain collecting unit 104 while rotating in the forward and reverse directions, and a rotary valve motor 134a for driving the rotary valve 134. The grains delivered from the rotary valve 134 are conveyed to the lower part of the grain raising machine 107 by the lower spiral 135.

  The grain raising machine 107 lifts and transports the grains transported by the lower spiral 135 from the lower part of the machine body to the upper part. In the middle of the conveying path to the upper part in the grain raising machine 107, a moisture detecting device 107a for taking in the grains falling from the bucket of the grain raising machine 107 and measuring the moisture value is provided. A discharge shutter 107b for discharging grains to the outside of the machine is provided at the upper part of the printer.

  An upper spiral 109 provided in an upper conveying device 108 is connected to an upper side of the grain raising machine 107, and the upper spiral 109 conveys a grain from above the grain raising machine 107 to above the storage unit 102. Is done. The kernel transported above the storage unit 102 is supplied to a kernel diffusion device 111 described later, and then diffused and supplied into the storage unit 102. Further, in the vicinity of the upper spiral 109, there is provided a dust collector 109a for sucking and discharging straw chips mixed with the grain to be conveyed.

FIG. 4 is a cross-sectional view of a main part of the upper conveying device 108 and the grain spreading device 111, and FIG. 5 is a bottom view of a main portion of the upper conveying device 108 and the grain spreading device 111.
As shown in FIG. 4, an upper spiral 109 for transporting the grains from the grain raising unit 107 to the upper side of the storage unit 102 is rotatably mounted inside the upper transfer door gutter 110 of the upper transport unit 108. In addition, a grain diffusion device 111 is provided below the upper transfer gutter 110 to receive the grain transported by the upper transport device 108 and to diffuse and supply the grain into the storage unit 102. An opening 110a having a predetermined width is provided on the bottom surface of the upper transfer gutter 110 along the longitudinal direction of the upper spiral 109, and the kernel transported by the upper spiral 109 flows down from the opening 110a. Thus, it can be supplied to the grain diffusion device 111.

  The grain diffusion device 111 is provided at a lower portion of the upper transfer door gutter 110 and a grain supply member 112 that supplies and supplies the grains supplied from the upper transport device 108 into the storage unit 102. A sliding member 114 provided to be slidable back and forth along the direction; a vertically moving member 113 supporting the grain supply member 112 and connected to the sliding member 114 so as to be vertically rotatable; The telescopic member 115 is provided to cover the rear opening 110a of the slide member 114 while expanding and contracting. The grain supply member 112 and the vertically moving member 113 are configured to slide together with the slide member 114.

  As shown in FIG. 4 and FIG. 5, the grain supply member 112 is fixed to a grain guide plate 112 a that guides the grains flowing down from the opening 110 a and drops and supplies them to the storage unit 102, and a vertically moving member 113. A left and right swing mechanism 112b that enables the grain guide plate 112a to swing right and left by an electric link mechanism.

  The grain guide plate 112a includes a rectangular inclined plate 112a1 having an inclined surface for supplying and supplying grains to the storage unit 102, and left and right side plates 112a2 provided to rise from both left and right sides of the inclined plate 112a1. In addition, it is possible to guide the grains flowing down and drop them from the front end of the grain guide plate 112a. As described above, according to the configuration in which the grains are dropped and supplied from the grain supply member 112 into the storage unit 102, the horizontal force acting on the grains at the time of diffusion is significantly larger than that in the conventional diffusion supply using the diffusion plate. As a result, the grain is less likely to collide with the inner wall of the storage unit 102, and the noise at the time of collision can be significantly reduced. Further, the load on the grain at the time of collision is also reduced.

  The rear end of the grain guide plate 112a is attached to the front end of the vertically moving member 113 together with the left and right oscillating mechanism 112b, and the grain guide plate 112a is rotatable left and right about the axis K. So that it is pivoted. As a result, as shown in FIG. 5, by the drive control of the left and right oscillating mechanism 112b, the grain guide plate 112a causes the predetermined rotation angle β (for example, right and left) with respect to the axis parallel to the upper spiral 109, respectively. (Approximately 30 degrees to 45 degrees). As a result, the grains flowing down while being guided by the side plate 112a2 on the grain guide plate 112a are diffused right and left according to the left and right swing motion of the grain guide plate 112a, and are dropped and supplied to the storage unit 102. Thereby, it is possible to perform uniform insertion in the left-right direction in the storage unit 102.

  Note that the grain guide plate 112a at the position (c) in FIG. 5 indicates the center position in the left and right swing operation, the position (r) is a state where the head is swung rightward, and the position (l) is a left position. This shows a state in which the head is swung to one side. The rotation angle of the grain guide plate 112 can be detected by a potentiometer (not shown). The larger the rotation angle β, the greater the diffusion of kernels in the left-right direction, and the smaller the rotation angle β, the smaller the diffusion of kernels in the left-right direction. The rotation angle β can be controlled by a control device C described later, and can be changed and adjusted according to the width of the storage unit 102 in the left-right direction and the properties of the grain. Thereby, in order to realize uniform sticking to the storage unit 102, the distance of the diffusion of the grain in the left-right direction can be optimized.

  The vertical movement member 113 is a member provided between the grain supply member 112 and the slide member 114 so that the grain supply member 112 can move up and down with respect to the slide member 114.

  The vertical moving member 113 is connected to a slide member 114 by a hinge mechanism (not shown) so as to be vertically rotatable, and is attached to a front end of the slide member 114 and a vertical moving plate 113 a having a substantially concave cross section. Further, an upper / lower swing mechanism 113b is provided, which is capable of swinging the vertical moving plate 113a up and down by an electric crank mechanism. As a result, the vertical moving member 113 pivots around the connecting portion with the slide member 114 as a fulcrum, and moves downward from the horizontal state so as to separate from the lower portion of the upper transfer door gutter 110. And the swing operation is possible.

  Further, since the grain supply member 112 is supported at the front end of the up and down moving plate 113a, the grain supply member 112 is also rotated up and down in accordance with the turning operation of the up and down moving member 113 to swing the head. It is configured to be possible. Thus, the vertically moving member 113 swings the grain supply member 112 upward and downward within a range of a predetermined inclination angle α (for example, 45 degrees) from the horizontal state by the drive control of the vertically swinging mechanism 112b. The range of the inclination angle α of the grain supply member 112 can be arbitrarily changed and adjusted by control of the control device C described later. Thereby, the grain diffusion device 111 can change the inclination angle of the inclined plate 112a1 according to the type and properties of the grain, and can adjust the distance of grain diffusion in the front-back direction of the storage unit 102. As a result, it is possible to uniformly prevent the grain from colliding with the storage unit 102 and to uniformly diffuse and supply the storage unit 102 in the front-rear direction. The tilt angle of the grain supply member 112 can be detected by a potentiometer (not shown). When the vertical moving plate 113a is inclined, the kernel passes through the vertical moving plate 113a and is supplied to the kernel guiding plate 112a of the kernel supplying member 112.

  The slide member 114 includes a slide plate 114a, which is a rectangular plate-like member slidably attached to the bottom surface of the upper transfer gutter 110, and an actuator 114b connected to the slide plate 114a and fixed to the ceiling surface of the storage unit 102. It has. The actuator 114b is configured to be able to be driven and controlled by a control device C, which will be described later. By driving the actuator 114b, the slide member 114 is moved below the upper transfer door gutter 110 along the longitudinal direction of the upper spiral 109, It is possible to slide back and forth. Note that the upper surface of the slide member 114 covers the opening 110a, and is configured so that the kernel does not flow down from above the slide member 114.

  Further, thereby, the vertical moving member 113 connected to the front end of the slide plate 114a of the slide member 114 and the grain supply member 112 attached to the vertical moving member 113, together with the slide of the slide member 114, the upper spiral 109 It is configured to be slidable back and forth along the longitudinal direction. The movement position of the slide plate 114 driven by the actuator 114b can be detected by a potentiometer (not shown). With such a configuration, the grain diffusion device 111 moves the grain supply member 112 back and forth, thereby moving the drop drop supply position to the storage unit 102 back and forth, and moving the grain back and forth. The grain supply member 112 is configured to be able to be diffused and supplied, and the longitudinal movement of the grain supply member 112 is configured to be controllable by a control device C described later.

  An elastic member 115 that expands and contracts according to the sliding operation of the slide member 114 and covers the rear opening 109 a of the slide member 114 is connected to a rear portion of the slide member 114. The telescoping member 115 has a telescopic cover structure which is formed by nesting a plate material having a substantially concave cross section with an open upper surface so that the telescoping member can be extended and contracted. It covers the opening 110a behind the member 114, and prevents the grain from flowing down from behind the slide member 111c. The elastic member 115 can also be formed by a bellows formed by forming an elastic member into a substantially concave cross section.

FIG. 6 is a schematic block diagram of the control device C of the grain dryer 101.
On the input side of the control device C for controlling the operation of the grain dryer 101, an outside air temperature sensor 121, a hot air temperature sensor 122, a moisture detection device 107a, a penetration amount detection sensor 123, and misfire detection of the combustion burner 5 are detected. A flame detection device 124, a penetration switch 125, a ventilation switch 126, a drying switch 127, a stop switch 128, a setting switch 129, and a potentiometer 130 are connected, and various types of information can be acquired. On the output side, a combustion burner 105, an exhaust fan 131, a grain raising motor 107c, a rotary valve motor 134a, a lower spiral motor 135a, a vertical movement mechanism 113b, a left and right swing mechanism 112b, and an actuator 114b are controllably connected. I have.

  With such a configuration, the control device C obtains various information from the input side, and controls the driving of the grain diffusion device 111 by controlling the vertical movement mechanism 113b, the left and right swing mechanism 112b, and the actuator 114b based on the information. The rotation angle β of the grain supply member 112 in the left-right direction and the cycle of the left-right reciprocating rotation, the rotation angle α of the up-down movement member 111a and the cycle of the up-down rotation, the movement distance and the back-and-forth movement of the slide member 114 Can be controlled. Thus, the control device C controls the distance between the front, rear, left, and right of the grain to be supplied into the storage unit 102 by controlling the left and right swing movement and the up and down swing movement of the grain supply member 112, and According to the size of the portion 102 and the properties of the grain, a suitable diffusion distance is realized, so that noise can be prevented, the load on the grain can be reduced, and uniform insertion into the storage portion 102 can be achieved. Note that these control amounts can be set in the control device C by the setting switch 129.

  FIGS. 7A and 7B are diagrams for explaining the operation of the grain supply member 112 by the control device C. FIG. The grain diffusion device 111 of the grain dryer 101 configured as described above operates as follows under the control of the control device C.

  The position (s) in FIGS. 7A and 7B represents the start position of the range of movement of the grain supply member 112 under the control of the control device C. The position (m) indicates a substantially central position between the front wall 102a and the rear wall 102b of the storage unit 102. The position (e) represents the end position of the movement range of the grain supply member 112 under the control of the control device C. 7A shows a state in which the grain supply member 112 has moved to a start position (position (s)), and FIG. 7B shows a state in which the grain supply member 112 has moved to an end position (position (e)). The moved state is shown.

(At the time of initial grain filling)
When the grain is first inserted into the storage unit 102, the grain supply member 112 obtains the information on the amount of insertion in the storage unit 102 from the insertion amount detection sensor 123, and The grain supply member 112 is configured to be moved from the front to the rear (from position (s) to position (e)) in accordance with the amount of insertion. Thereby, grains can be uniformly applied to the front and rear in the storage unit 102.

(At the time of grain drying operation)
During the drying operation of the grain, the control device C periodically reciprocates the grain supply member 112 back and forth from the start position (position (s)) to the end position (position (e)), and simultaneously supplies the grain. The grain guide plate 112a of the member 112 is swung in the left-right direction to control the grain to be diffused and supplied into the storage unit 102. In the drying operation of the grain, the type of the grain can be selected by operating the setting switch 129, and the distance D1 (position (s) to position (e)) in which the grain supply member 112 is moved forward and backward. Is configured to be changed according to the type of grain selected. Specifically, when the type of cereal is soybean, the distance D1 that is the range in which the grain supply member 112 moves back and forth with respect to the distance D2 of the front and rear width of the storage unit 102 is about one-fourth. When the type is rice and wheat, the distance D1 of the front and rear movement range is configured to be about one half. By operating the grain supply member 112 in this manner, the grains can be stuck into the storage unit 102 while being uniformly diffused in the front, rear, left, and right irrespective of the type and properties of the grains. As a result, the shape of the top surface of the grains deposited and stored in the storage unit 102 is stable regardless of the type and properties of the grains, and thus the height of the grains deposited in the storage unit 2 is detected by a sensor to detect the height. When detecting the insertion amount, it is possible to grasp a more accurate insertion amount. In addition, by setting the range of movement D1 of the grain supply member 112 in the front-rear direction, it is possible to appropriately prevent the grain from colliding with the inner wall of the storage unit 102, reduce noise, and reduce the load on the grain. . At this time, the vertically moving member 111a may be controlled so as to be fixed at a predetermined inclination angle, and may be rotated up and down within the range of the inclination angle α to diffuse the grain back and forth. It may be controlled.

  As described above, the control device C adjusts the inclination angle α (for example, 45 degrees) of the vertically moving member 111a and changes the inclination of the inclined plate 112a1 according to the type and properties of the grain, thereby changing the inclination of the grain. Further fine adjustment of the diffusion distance is possible. Thereby, it is possible to more preferably uniformly prevent the grain from colliding with the inner wall of the storage unit 102 and prevent the noise from being applied to the storage unit 102 while preventing the noise. The inclination angle α can be set in the control device C by the setting switch 129.

  The present invention is not limited to the above embodiments, and various changes can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  For example, at the time of starting the operation of the grain dryer 101, when the front and rear adjustment is performed as the operating condition, the left and right direction is set after the operation range is at the center position of the operating range (the state of the grain supply member 112 at the position (c)). May be. Accordingly, when moving in the front-rear direction while moving in the left-right direction, the load on the movable part is increased, leading to a reduction in durability and a cause of failure. Therefore, a reduction in durability and failure of the grain diffusion device 111 can be prevented.

  Further, the control device C is configured such that when the operation of the grain dryer 101 is started, the grain supply member 112 is adjusted to an initial position (the grain supply member 112 is at the position (c) and the position (s)). Is also good. Thereby, the supply position of the grain at the time of starting the operation is set to the same position every time, and the diffusion and supply of the grain can be stably performed.

  Further, the control device C detects the operating position of the grain supply member 112 of the grain spreading device 111 with the potentiometer 130, and issues an instruction to operate in the front and rear direction with the setting switch 129 as an inspection function. It may be configured to operate, display a detected position value, move in the left-right direction, move in the left-right direction, and display the detected position value. Accordingly, the provision of the inspection function of the position adjustment of the grain supply member 112 facilitates the installation adjustment and the operation check at the site.

  Further, the control device C detects the operating position of the grain supply member 112 of the grain spreading device 111 by the potentiometer 130, and when the grain drying machine 101 is in the drying operation, the operating position detection value is shifted from the operation start to the operation side. If it does not change, the operation may be regarded as abnormal, and the drying operation of the grain dryer 101 may be stopped, the drying speed may be reduced, or the hot air temperature may be reduced. Accordingly, by providing the control when the operation of the grain diffusion device 111 is abnormal, the safety when the work is continued is improved.

  The control device C acquires information on the moisture value of the grain from the moisture detection device 107a, and when the acquired measured moisture value reaches near the drying stop (for example, the measured moisture value is equal to or less than the moisture setting + 1.5%), The configuration may be such that the grain supply member 112 moves to the center position in the front-rear and left-right directions (the state where the grain supply member 112 is at the position (m) and the position (c)). Thus, near the drying stop, the supply position of the grains is changed, and the grains are circulated to a certain area, whereby it is possible to suppress moisture unevenness and moisture variation in the final stage.

  Further, the control device C obtains information on the moisture value of the grain from the moisture detecting device 107a, calculates the moisture unevenness value from the moisture measurement data for one cycle of the grain, and calculates the moisture average value and the moisture value for one cycle. The difference (A) between the set values may be calculated, and the grain supply member 112 may be operated forward, backward, left, and right in accordance with the difference. More specifically, when the difference (A) is 5% or more, it is sequentially moved to the front, back, left and right, and when the difference (A) is less than 3 to 5%, it is sequentially moved to the left and right, and the difference (A) is 3%. When it is less than, it is configured not to move back and forth and left and right. As a result, the performance of unevenness drying can be improved, and the influence on the next process setup can be reduced. Further, during the drying operation of the grain, the turning angle β of the left and right swing of the grain supply member 112 may be reduced as the difference (A) decreases. Thereby, as the water unevenness decreases, the necessity of reducing the water unevenness by the diffusion supply is reduced, so that the energy efficiency can be improved by suppressing the rotation of the grain supply member 112 in the left-right direction.

  Further, the control device C acquires information on the moisture value of the grain from the moisture detection device 107a, automatically stops the moisture detection device 107a at the moisture setting of 15.5% or less, and performs the drying operation without being discharged. It is also possible to adopt a configuration in which it is determined that additional drying is performed, and the drying speed setting is automatically set based on a predetermined moisture difference between the initial moisture measurement value and the set moisture value. When the moisture value to be dried is low, if the drying temperature is high, the variation of the stopped grain moisture does not decrease, and the moisture stopping accuracy may decrease. In such a state, when the additional drying is performed, the drying is over-dried or undried, but the difference between the initial moisture and the set moisture is used to correct the drying speed and perform appropriate drying control. The drying performance and work efficiency can be improved while improving the stopping moisture accuracy.

  In addition, the control device C acquires information on the moisture value of the grain from the moisture detection device 107a, and determines the grain type as chaff or rice hull based on a predetermined moisture difference and a moisture variation (deviation) between the initial moisture measurement value and the set moisture value. In this case, the drying speed setting may be automatically set. For example, when the water variation (deviation) is 1.5σ or less, it is determined that the grain is an aged grain, and when the predetermined moisture difference is less than 2 to 3%, when the grain drying speed setting is higher than “fast”, “somewhat fast” And "somewhat fast" to "normal". When the predetermined moisture difference is less than 1 to 2%, if the grain drying speed setting is higher than “normal”, the setting is “normal”. When the moisture value to be dried is low, if the drying speed is high, the variation of the stopped grain moisture cannot be reduced, and the accuracy of stopping moisture may be reduced. In such a state, if it is further dried, it may be over-dried or undried, but in the case of late-ripened cereals, the drying is progressing while the rice is standing, it is low moisture, and there is little moisture variation. In addition, the water unevenness of the storage unit 102 tends to be large. Therefore, by judging the late-ripened cereal by the water variation (deviation), the drying speed is corrected by the difference between the water value at the beginning of drying and the set water, and the proper drying control is performed, thereby improving the stopping water accuracy, Drying performance and work efficiency can be improved.

  Further, the stable state of combustion is determined based on the fluctuation value of the misfire detection of the flame detection device 124 of the grain dryer 101, and in the case of misfire, a large amount of fuel is used as a re-ignition step to ensure ignition. May be configured. As a result, fluctuations in air flow (flame fluctuations) are detected, and at the time of re-ignition, the amount of fuel is increased, thereby ensuring re-ignition after misfire.

  Further, the stable state of combustion is determined based on the fluctuation value of the misfire detection of the flame detection device 124 of the grain dryer 101, and when the shift to the misfire region is repeated a plurality of times within a predetermined time, the temperature adjustment is lowered. May be set. As a result, it is possible to avoid the danger of fire by sustaining the drying operation.

  Further, the grain dryer 101 may be provided with a user manual setting means so that a user can manually set the position of the grain supply member 112. Thereby, the grain supply position of the grain supply member 112 into the storage unit 102 can be set in accordance with the user's various needs for the type and properties of the grain.

  In the grain dryer 101 having an exhaust fan that discharges exhaust air to the outside of the apparatus, the exhaust fan rotation speed adjustment control may be performed by changing the air volume. An exhaust fan rotation speed drive adjustment device is provided for detecting the exhaust fan rotation speed or the exhaust fan load current fluctuation, etc., and detecting the air volume fluctuation.If it is determined that the air volume has decreased, the exhaust fan speed is increased or You may comprise so that drive adjustment may be carried out to proper rotation. Thereby, even if a misfire is detected due to a change in the air flow, or even if the combustion is not stable, by detecting the fluctuation in the air flow and adjusting the rotation speed to an appropriate speed, it is possible to avoid the durable drying work and the danger of fire. .

  4 and 5, the grain diffusion device 111 includes a grain supply member 112 that supplies the grains received from the upper spiral 109 into the storage unit 102, and an upper spiral A slide member 114 provided slidably back and forth along the longitudinal direction of 109; a vertical movement member 113 having a front end supporting the grain supply member 112 and a rear end rotatably connected to the slide member 114; And a telescopic member 115 that covers the rear opening 110a of the slide member 114 while expanding and contracting according to the sliding operation of the slide member 114. However, the vertical movement member 113 is omitted and the front end of the slide member 114 is omitted. The rear end of the grain supply member 112 may be attached to the portion. Thereby, the vertical swing function of the grain supply member 112 is lost, but the cost is reduced by reducing the number of parts, and the strength of the grain diffusion device 111 is improved by reducing the number of movable parts.

101 Grain dryer 102 Storage unit 103 Drying unit 104 Grain collecting unit 106 Exhaust fan 107 Grain raising machine 107a Moisture detector 108 Upper transfer device 109 Upper spiral 109a Dust extractor 110 Upper transfer door gutter 110a Opening 111 Grain diffusion device 111a Vertical moving member 112 Grain discharge port 112a Grain guide plate 112b Vertical oscillating mechanism 113 Vertical moving member 113a Vertical moving plate 113b Vertical oscillating mechanism 114 Slide member 114a Slide plate 114b Actuator 115 Telescopic member 134 Rotary valve 134a Rotary valve motor 135 Lower spiral

Claims (3)

A storage unit that stores the grains, a drying unit that blows hot air onto the grains flowing down from the storage unit to dry the grains, and a grain collection unit that collects the grains that have passed through the drying unit,
In the grain dryer that circulates and recycles the grains that have passed through the drying section and the grain collection section from the storage section to the storage section,
Receiving grains from the upper spiral conveying the grains to the upper part of the storage unit, provided with a grain diffusion device that supplies the inside of the storage unit,
The grain diffusion device, a slide member slidable along the longitudinal direction of the upper spiral,
A grain supply member connected to the slide member, moving along the longitudinal direction of the upper spiral together with the slide member, and supplying the kernel received from the upper spiral to the storage unit,
Further, the grain dryer includes a drive mechanism that slides the slide member back and forth within a predetermined movable range. Equipped with means for setting the type of grain,
The slide member, when the diffusion supply of the grain, when the set grain type is soybean, the set grain type is configured to have a smaller movable range than when the set grain type is rice and wheat. The grain dryer according to claim 1, characterized in that:   The grain supply member includes a grain guide plate that guides the grain received from the upper spiral to the storage unit and supplies the grain drop, and a left and right swing mechanism that allows the grain guide plate to swing right and left. The grain dryer according to claim 1 or 2, wherein: