JPH10141854A - Drying louver for grain dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove foreign matter (straw debris and dust) collected on a vent air passage. SOLUTION: This louver is adapted such that top plates 21a, 21b are connected with upper ends of side plates 22a, 22b disposed parallely, and first bottom plates 31a, 31b are connected with lower ends of the side plates 22a, 22b, inclined inwardly. Second bottom plates 32a, 32b are connected with lower ends of the first bottom plates 31a, 31b, inclined outwardly. The first bottom plates 31a, 31b and the second bottom plates 32a, 32b are rockable respectively with respect to the side plates 22a, 22b, and the size of the bottom opening 6 communicating with the air vent passage 5 is changed owing to the rocking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver for drying a grain dryer, and more specifically, to store grains (grains) of grains such as rice and wheat in a grain tank and circulate the grains in a grain tank. The present invention relates to a drying louver used in a grain dryer configured to dry until the amount of water reaches a water level.

[0002]

2. Description of the Related Art A grain dryer has a grain tank for containing grains such as rice and wheat. A storage chamber is provided above the inside of the grain tank, and a drying chamber is provided below the inside so as to communicate with the storage chamber. A grain inlet is provided on the upper surface of the grain tank, and a grain outlet is provided on the lower surface of the grain tank. The grain dryer further includes an elevator for circulating grains outside the grain tank.

[0003] Grains to be dried are introduced into the storage chamber through an inlet on the upper surface of the grain tank. The introduced grains flow and pass through the storage chamber and the drying chamber from above to below, and are then discharged from the discharge port on the lower surface of the grain tank. The discharged grains are transported above the grain tank by an elevator, and are again charged into the storage chamber from the charging port. Thereafter, the same process is repeated until the grain has a predetermined water content.

A plurality of drying air supply louvers and a plurality of drying exhaust air louvers are arranged inside the drying chamber. Each of the air supply louver and the exhaust air louver has a large number of through holes. The air supply louvers are divided into a plurality of layers arranged in parallel with each other at predetermined intervals in the vertical direction. Each louver layer is composed of a predetermined number of air supply louvers arranged in parallel with each other at predetermined intervals in the horizontal direction. The exhaust air louver is also similar to the air supply louver, and is divided into a plurality of layers arranged in parallel with each other at predetermined intervals in the vertical direction, and each louver layer is arranged in parallel with each other at predetermined intervals in the horizontal direction. It is composed of a predetermined number of exhaust louvers. Each layer of the exhaust air louver is arranged above and close to each layer of the air supply louver. The air supply louver and the exhaust air louver usually have the same configuration.

[0005] Fig. 8 shows an example of a configuration of a drying louver of a conventional grain dryer. 8, a conventional drying louver 101 includes a pair of top plates 121a and 121b, a pair of side plates 122a and 122b, and a pair of upper bottom plates 131a,
131b and a pair of lower bottom plates 132a and 132b, all of which are made of rigid metal. The pair of top plates 121a and 121b are connected so that their upper ends abut each other, and form a mountain shape. The pair of side plates 122a and 122b have their upper ends connected to the lower ends of the pair of top plates 121a and 121b, respectively, and are arranged in parallel with an interval.

The upper ends of the pair of upper bottom plates 131a and 131b are connected to the lower ends of the pair of side plates 122a and 122b, respectively. A pair of upper bottom plates 131a, 131b
Are inclined inward with respect to the pair of side plates 122a and 122b, respectively. A pair of lower bottom plates 132a, 132b
Have their upper ends connected to the lower ends of a pair of upper bottom plates 131a and 131b, respectively. A pair of lower bottom plates 132a,
132b is inclined outward with respect to the pair of upper bottom plates 131a and 131b, respectively, and a pair of side plates 122a, 1
It is almost parallel to 22b.

[0007] A pair of top plates 121a and 121b, a pair of side plates 122a and 122b, and a pair of upper bottom plates 131a and 131.
b and a pair of lower bottom plates 132a and 132b each have a large number of through holes 104 formed therein. A pair of top plates 12
1a, 121b, a pair of side plates 122a, 122b, a pair of upper bottom plates 131a, 131b, and a pair of lower bottom plates 13
2, 132b defines an internal space to be the ventilation path 105. The ventilation path 105 includes a pair of side plates 122a, 122
b extends in the longitudinal direction, and both ends are open. The pair of lower bottom plates 132a, 132b define a bottom opening 106 communicating with the ventilation passage 105.

When the conventional drying louver 101 is mounted in a grain tank of a grain dryer, a pair of top plates 121a, 1
The pair of side plates 122a and 122b are fixed such that the pair of side plates 122a and 122b are substantially vertical with the bottom 21b facing upward and the bottom opening 106 facing downward. One end opening of the ventilation passage 105 is a hot air inlet or a hot air outlet, and the other end opening is usually
Will be closed.

Hot air for drying is supplied into the drying air supply louver 101 from one end opening of the ventilation passage 105. The hot air flows through the through holes 1 of the drying air supply louver 101.
04 flows out to the outside, and flows through the inside of the grains around the grains to dry the grains with hot air. The hot air that has passed through the inside of the grain flows through the corresponding through-hole 104 of the drying louver 101 into the inside thereof, and then flows into the ventilation passage 10.
5 is discharged to the outside of the grain tank from one end opening.

In the conventional drying louver 101 described above, a pair of upper bottom plates 131a and 131b are connected to a pair of side plates 1a.
The reason why the bottom opening 106 is narrowed between the pair of lower bottom plates 132a and 132b so as to be inclined inward with respect to 22a and 122b is to prevent an undried state due to stagnation of grains.

That is, a pair of upper bottom plates 131a, 131
b and a pair of lower bottom plates 132a and 132b
When formed substantially parallel to 22a and 122b, a part of the grains flowing in the drying chamber easily enters the ventilation path 105 through the bottom opening 106 due to the pressure caused by its own weight. The entered grain cannot move during the circulation movement of the grain, and stays there until the end of the drying step and is not dried. For this reason, when all the grains are taken out of the grain tank at the end of the drying process, the undried grains that have stayed are mixed into the dried grains to a desired moisture content. Occurs.

Accordingly, a pair of upper bottom plates 131a, 131b
Is tilted inward with respect to the pair of side plates 122a, 122b so that the bottom opening 1 between the pair of lower bottom plates 132a, 132b
By making 06 narrow, the grains in the drying chamber flow without stagnation, and the inconvenience is eliminated.

[0013]

However, the above-mentioned conventional drying louver 101 has the following problems.
That is, since the pair of upper bottom plates 131a and 131b are inclined inward to narrow the bottom opening 106 between the pair of lower bottom plates 132a and 132b, when used on the exhaust side, the kernels in the drying chamber cannot be used. When the foreign matter (straw, dust, etc.) contained in the air enters the ventilation path 105 together with the hot air through the through hole 104, the foreign matter that has entered is difficult to be discharged together with the hot air due to the narrowness of the bottom opening 106. It is easy to collect inside.

Further, the hot air on the exhaust side contains more moisture than the air supply side because it contains moisture absorbed from grains.
For this reason, the foreign matter that has entered the inside of the ventilation path 105 is removed by the pair of upper bottom plates 131a and 131b and the pair of lower bottom plates 132.
a, 132b easily stays inside, and is more difficult to be discharged from the ventilation path 105.

The foreign matters thus accumulated inside the ventilation path 105 hinder the smooth flow of the hot air, which causes a problem of adversely affecting the drying operation of the grain. There is also a problem that the foreign substance needs to be manually removed by an operator.

On the air supply side, the hot air is still low in humidity, and flows out of the ventilation passage 105 of the drying louver 101 through the through hole 104 to the outside. Does not occur.

It is an object of the present invention to provide a drying louver for a grain dryer that can easily remove foreign matters such as straw, dust and the like accumulated in an internal ventilation path.

Another object of the present invention is to provide a drying louver for a grain dryer capable of automatically removing foreign substances such as straw chips and dust accumulated in an internal ventilation path.

[0019]

[Means for Solving the Problems]

(1) The drying louver of the grain drying apparatus according to the present invention includes:
A pair of side plates arranged apart from each other, a top plate connected to upper ends of the pair of side plates so as to close a gap between the pair of side plates, and a pair of first plates respectively connected to lower ends of the pair of side plates. A bottom plate, and a pair of second bottom plates connected to lower ends of the pair of first bottom plates at a predetermined angle to the pair of first bottom plates, respectively, and the pair of side plates, the top plate, The pair of first bottom plates and the pair of second bottom plates form a ventilation path extending along a longitudinal direction of the pair of side plates, and the pair of second bottom plates are formed in a longitudinal direction of the pair of side plates. A bottom opening extending along and communicating with the ventilation path, at least the pair of side plates and the top plate each have a plurality of through holes communicating with the ventilation path, and The bottom plate and the pair of second bottom plates are A respective pivotable relative to the pair of side plates, wherein the size of the bottom opening by the swing is arranged to vary.

(2) In the drying louver of the grain drying apparatus according to the present invention, the pair of second bottom plates is formed by the pair of first bottom plates.
The pair of first bottom plates are connected to the lower end of the bottom plate at a predetermined angle to the pair of first bottom plates, respectively, and the pair of first bottom plates and the pair of second bottom plates are swingable with respect to the pair of side plates, respectively. The size of the bottom opening is changed by the swing. Therefore, when there is a grain outside, if the size of the bottom opening is reduced to prevent the grain from entering the inside of the ventilation passage from the bottom opening, it can be used similarly to a conventional louver of this kind. it can.

When there is no grain outside, the pair of first bottom plates and the pair of second bottom plates are respectively swung with respect to the pair of side plates to increase the size of the bottom opening. For example, any foreign matter (straw, dust, etc.) that has entered the inside of the ventilation path from the through-hole naturally does not adhere to the pair of first bottom plates or the pair of second bottom plates. Fall. Therefore, the pair of first
The rocking of the bottom plate and the pair of second bottom plates makes it possible to automatically remove foreign matters accumulated in the ventilation path.

Further, if the bottom opening is enlarged by swinging the pair of first bottom plates and the pair of second bottom plates,
When the operator removes foreign matter remaining in the ventilation path after swinging, the operation can be easily performed.

(3) In the drying louver of the grain drying apparatus according to the present invention, preferably, an angle formed between the pair of first bottom plates and the pair of second bottom plates is such that the pair of first bottom plates is connected to the pair of first bottom plates. The pair of second bottom plates are set so as to protrude outside the pair of side plates, respectively, when they are substantially parallel to the side plates.

With this arrangement, when there is a grain outside, the pair of first bottom plates and the pair of second bottom plates are swung inward to reduce the bottom opening, and the kernel passes through the bottom opening. Can be prevented from entering the ventilation path. On the other hand, when there is no grain outside, if the pair of first bottom plates and the pair of second bottom plates are swung outward to enlarge the bottom opening, foreign matter that has entered the ventilation path through the through hole is provided. Can be easily removed.

In this case, it is preferable that the angle formed between the pair of first bottom plates and the pair of second bottom plates is more than 90 ° and less than 180 °. If the angle is 90 ° or less, the foreign matter that has entered the ventilation path is more likely to accumulate. On the other hand, if the angle is 180 ° or more, the effect of the present invention cannot be obtained.

(4) Preferably, the first state in which the area of the bottom opening is smaller than the area of the ventilation path on the side of the bottom opening by swinging of the pair of first bottom plates and the pair of second bottom plates. And a second state in which the area of the bottom opening is substantially equal to or larger than the area of the ventilation path on the bottom opening side.

Alternatively, the first state in which grains hardly enter the inside of the ventilation passage through the bottom opening due to the swinging of the pair of first bottom plates and the pair of second bottom plates, The second state in which the foreign matter accumulated inside can be easily dropped may be adopted.

In these cases, the same effect as (3) can be obtained.

(5) In the drying louver of the grain drying apparatus according to the present invention, preferably, the pair of first bottom plates and the pair of second bottom plates are formed by a pressure of the grain stored in the outside of the drying louver. To swing inward, and swing outward when the pressure of the cereal grains is removed. In this case, there is an advantage that the ventilation path is automatically cleaned according to the presence or absence of the pressure of the cereal grains without actively operating the pair of first bottom plates and the pair of second bottom plates.

(6) The drying louver of the grain drying apparatus according to the present invention may include fixing means for fixing the pair of first bottom plates and the pair of second bottom plates. in this case,
The swinging of the pair of first bottom plates and the pair of second bottom plates is prevented by placing the fixing means in the operating state, and the pair of first bottom plates and the pair of the pair are released by releasing the operating state of the fixing means. It is preferable that the second bottom plate can be swung.

As the fixing means, the pair of first bottom plates and the pair of second bottom plates are configured to swing around a swing axis, and a bolt, nut, pin or the like is connected to the swing axis. It is convenient to attach a stop. In this case, during the season, the fixing means is used with the bottom opening being fixed in a small state, and at the time of cleaning after the end of the season, the fixing means is loosened to remove the pair of first bottom plates and the pair of second bottom plates. Swing the bottom plate to widen the bottom opening.

(7) The drying louver of the grain drying apparatus of the present invention may include a driving means for swinging the pair of first bottom plates and the pair of second bottom plates. In this case, by operating the driving means, the pair of first bottom plates and the pair of second bottom plates are caused to swing with respect to the pair of side plates. In this case, the swinging of the pair of first bottom plates and the pair of second bottom plates can be reliably performed regardless of the presence or absence of the grain pressure.

(8) The drying louver of the grain drying apparatus according to the present invention may include a vibrating means for applying vibration to the pair of first bottom plates and the pair of second bottom plates. In this case, by operating the vibrating means, it is configured to remove foreign matter adhered to the inside of the pair of first bottom plates and the pair of second bottom plates. There is an advantage that foreign matter can be more reliably removed as compared with the case where no vibration is applied.

[0034]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 3 show a drying louver 1 of a grain dryer according to a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the drying louver 1 includes a non-movable part 2 and a movable part 3.

The non-movable part 2 includes a pair of top plates 21a and 21b.
And a pair of side plates 22a and 22b. The movable part 3 includes a pair of upper bottom plates 31a and 31b and a pair of lower bottom plates 3
2a and 32b. A pair of top plates 21a, 21
b, a pair of side plates 22a, 22b, a pair of upper bottom plates 31a,
31b and the pair of lower bottom plates 32a, 32b are both made of rigid metal.

The pair of top plates 21a and 21b are connected so that their upper ends abut each other, and form a mountain shape. The pair of side plates 22a and 22b have their upper ends connected to the lower ends of the pair of top plates 21a and 21b, respectively, and are arranged in parallel with an interval.

The upper ends of the pair of upper bottom plates 31a, 31b are swingably connected to the lower ends of the pair of side plates 22a, 22b via two swing shafts 7a, 7b. The swing shafts 7a and 7b are made of rigid metal and extend along the longitudinal direction of the pair of side plates 22a and 22b.

The connection between the pair of upper bottom plates 31a, 31b and the pair of side plates 22a, 22b via the swing shafts 7a, 7b uses the same configuration as the "hinge". That is, FIG.
As clearly shown in FIG. 2B, the lower end of the side plate 22a is curved in a substantially circular shape, and the swing shaft 7a is fitted in the cylindrical gap 8 formed by the curved portion. On the other hand, the upper bottom plate 31
Similarly, the upper end of “a” is also bent into a substantially circular shape, and the swing shaft 7a is inserted into a cylindrical gap 8 formed by the bent portion. The curved portions of the side plate 22a and the upper bottom plate 31a are formed with notches so as to be staggered, and the notches and the non-notches are engaged with each other. The swing shaft 7a penetrates both the curved portions of the side plate 22a and the upper bottom plate 31a. The swing shaft 7b has the same structure.

The upper ends of the pair of lower bottom plates 32a and 32b are connected to the lower ends of the pair of upper bottom plates 31a and 31b, respectively. The pair of lower bottom plates 32a, 32b are inclined outward at a fixed angle θ with respect to the pair of upper bottom plates 31a, 31b, respectively, and are substantially parallel to the pair of side plates 22a, 22b.

The upper bottom plate 31a and the lower bottom plate 32a are
swings around the swing shaft 7a with respect to the shaft a. Accordingly, the angle formed by the upper bottom plate 31a and the lower bottom plate 32a with the side plate 22a also changes. Similarly, the upper bottom plate 31b and the lower bottom plate 32
b swings around the swing shaft 7b with respect to the side plate 22b. Accordingly, the angle formed by the upper bottom plate 31b and the lower bottom plate 32b with the side plate 22b also changes. The size (area) of the bottom opening 6 changes due to the swing of the upper bottom plate 31a and the lower bottom plate 32a, and the upper bottom plate 31b and the lower bottom plate 32b.

A pair of top plates 21a and 21b, a pair of side plates 2
2a, 22b, a pair of upper bottom plates 31a, 31b, and a pair of lower bottom plates 32a, 32b each have a large number of through holes 4.
Is formed. These through-holes 4 act to cause hot air for drying to flow from the inside of the louver 1 to the outside and vice versa. The pair of top plates 21a and 21b, the pair of side plates 22a and 22b, the pair of upper bottom plates 31a and 31b, and the pair of lower bottom plates 32a and 32b define an internal space serving as the ventilation passage 5. Both ends of the ventilation path 5 are open. The pair of lower bottom plates 32 a and 32 b define a bottom opening 6 that communicates with the ventilation passage 5.

In the first embodiment, when there is no grain outside the louver 1, the upper bottom plate 31a and the lower bottom plate 32a
Due to their own weight, as shown in FIGS. 3 (a) and 3 (c), they swing outward and stop. At this time, the upper bottom plate 31a is substantially aligned with the corresponding side plate 22a, and the lower bottom plate 32a protrudes outside the side plate 22a.
Also, the upper bottom plate 31b and the lower bottom plate 32b are outside (the opposite directions of the upper bottom plate 31a and the lower bottom plate 32a) due to their own weight.
Rocks and stops. At this time, the upper bottom plate 31b is substantially aligned with the corresponding side plate 22b, and the lower bottom plate 32b protrudes outside the side plate 22b. As a result, the lower bottom plate 3
The area of the bottom opening 6 defined by 2a and 32b increases.

When the grain 9 exists outside the louver 1, the pressure of the grain 9 causes the upper bottom plate 31a and the lower bottom plate 3
2a is swung inward and stops in the state shown in FIG. At this time, the upper bottom plate 31a is connected to the corresponding side plate 22a.
, The lower bottom plate 32a is substantially parallel to the side plate 22a. In addition, the upper bottom plate 31b and the lower bottom plate 32b
As shown in FIG. 3 (b), it swings inward (opposite the bottom plate 31a and the bottom plate 32a). At this time, the upper bottom plate 31
b is inclined inward with respect to the corresponding side plate 22b, and the lower bottom plate 32b is substantially parallel to the side plate 22b. As a result, the bottom opening 6 defined by the pair of lower bottom plates 32a and 32b is formed.
Area is reduced.

Next, a grain dryer 50 using the drying louver 1 of the first embodiment having the above configuration will be described with reference to FIGS. 4 and 5. FIG.

The grain dryer 50 has a grain tank 52 for containing grains such as rice and wheat. This grain tank 52
Are supported by a plurality of columns 51 installed on the foundation B. A storage chamber 52a is provided above the inside of the grain tank 52, and a drying chamber 52b is provided below the inside of the grain tank 52 so as to communicate with the storage chamber 52a. A grain inlet 67 is provided on the upper surface of the grain tank 52, and a grain outlet 58 is provided at the lower end of the grain tank 52.

A rotary valve 56 and a screw conveyor 57 are provided at the lowest position inside the grain tank 52. The rotary valve 56 includes a storage chamber 52a and a drying chamber 52.
b. The grains flowing through b are retained, and the flow path is opened, if necessary, to drop the grains downward. The screw conveyor 57 conveys the grains dropped through the rotary valve 56 in the horizontal direction to the discharge port 58.

A rotary valve 59 is provided in the vicinity of the discharge port 58, and the grain passing through the discharge port 58 is placed on the lower end of the elevator 61 through the rotary valve 59, and is placed above the grain tank 52. Transported to The grain transported by the elevator 61 to above the grain tank 52 is sent to the inlet 67 through the cleaner 62, the switching valve 63, and the circulation pipe 64, and the inside of the grain tank 52 is again returned from the inlet 67. It is thrown. Then, the drying process is started again. Thereafter, the same process is repeated until the grain has a predetermined water content.

Reference numeral 66 denotes a pipe for discharging grains.
Reference numeral 68 denotes a disperser, which has a function of uniformly dispersing the grains introduced from the inlet 67 into the storage chamber 52a.

Inside the drying chamber 52b, a plurality of drying air supply louvers 65 having the conventional structure shown in FIG.
A plurality of exhaust louvers 1 for drying of the embodiment are arranged. Here, the air supply louver 65 is divided into four layers arranged in parallel with each other at predetermined intervals in the vertical direction.
The layers are arranged side by side in parallel with each other at predetermined intervals in the horizontal direction.
It is composed of two air supply louvers 65.

The exhaust air louver 1 is also similar to the air supply louver 65, and is divided into four layers arranged in parallel at a predetermined interval in the vertical direction. It is composed of five exhaust louvers 1 provided.

Each layer of the exhaust louver 1 is provided with an air supply louver 6.
5 are arranged above and close to each other. As clearly shown in FIG. 4, the air supply louvers 65 of each layer are arranged in a staggered manner with respect to the exhaust air louvers 1 of the corresponding layer.
In other words, the exhaust louver 1 of the corresponding layer is arranged between two adjacent air supply louvers 65.

Each exhaust louver 1 is mounted in the drying chamber 52b such that the pair of top plates 21a and 21b is directed upward, the bottom opening 6 is directed downward, and the pair of side plates 22a and 22b are vertical. ing. As shown in FIG. 5, one end opening of the ventilation path 5 is a hot air discharge port, and the other end opening is closed.

The installation of each air supply louver 65 in the drying chamber 52b is the same as that of the exhaust air louver 1. That is,
The pair of top plates face upward and the bottom opening faces downward so that the pair of side plates are vertical. As shown in FIG. 5, one end opening of the ventilation path 5 is a hot air inlet,
The other end opening is closed.

The hot air inlet of each air supply louver 65 communicates with the air supply chamber 54 provided adjacent to one side of the grain tank 52. The hot air outlet of each exhaust louver 1 communicates with an exhaust chamber 55 provided on the opposite side of the air supply chamber 54 and adjacent to the grain tank 52. Hot air is supplied to the air supply chamber 54 by a blower 60.

First, the hot air in the ventilation chamber 54 flows into the ventilation passage of each air supply louver 65 from the hot air inlet. The hot air inside the ventilation path continues to be supplied to each air supply louver 65.
Flows out through a number of through holes. Here, the hot air comes into contact with the grains contained in the drying chamber 52b to dry the grains, and on the other hand, the moisture (humidity) contained in the grains.
Absorb.

Subsequently, the hot air containing moisture flows into the ventilation passage 5 through the large number of through-holes 4 of the exhaust louver 1 which is adjacent and arranged above. Then, after flowing out into the exhaust air chamber 55 through the hot air exhaust port of the exhaust air louver 1, the air is discharged to the outside via a duct 69 connected to the exhaust air chamber 55.

In the grain dryer 50, before the grains to be dried are put into the grain tank 52, the upper bottom plate 31a and the lower bottom plate 32a of the exhaust air louver 1 are moved by their own weights as shown in FIG.
As shown in (a), it swings outward and stops. At this time, the area of the bottom opening 6 defined by the pair of lower bottom plates 32a and 32b is substantially the same as the area of the bottom side of the ventilation path 5 and is very large.

When the grain to be dried is put into the grain tank 52, the area around the louver 1 is filled with grains. At this time, the upper bottom plate 31a and the lower bottom plate 32a of the louver 1 are swung inward by the pressure of the grain, and the upper bottom plate 31b and the lower bottom plate 32b are inwardly opposed to the upper bottom plate 31a and the lower bottom plate 32a. And stops in the state shown in FIG. 3 (b). At this time, the upper bottom plate 31a is inclined inward with respect to the corresponding side plate 22a, and the lower bottom plate 32a is substantially parallel to the side plate 22a. The upper bottom plate 31b is inclined inward with respect to the corresponding side plate 22b, and the lower bottom plate 32b is substantially parallel to the side plate 22b. As a result, the area of the bottom opening 6 defined by the pair of lower bottom plates 32a and 32b is reduced, and is much smaller than the area of the ventilation path 5 on the bottom side. During the drying process,
Since this state is maintained, there is no possibility that the grains enter the ventilation path 5 and stay there.

As shown in FIG. 3B, during the drying process, when hot air containing water flows into the ventilation path 5 through the large number of through holes 4 of the exhaust air louver 1, as shown in FIG. Foreign matter D (for example, straw chips or dust) attached to the kernels easily flows into the ventilation path 5 together with the hot air. Since the bottom opening 6 of the ventilation path 5 is narrow, the foreign matter D is difficult to be discharged through the bottom opening 6 and easily accumulates in the ventilation path 5.

However, since the exhaust air louver 1 has the movable part 2, the drying process is completed and the grains are stored in the grain tank 52.
From the bottom, the pressure of the grain is lost and the upper bottom plate 31a
The lower bottom plate 32a swings outward and stops by its own weight as shown in FIG. 3 (c). At this time, the area of the bottom opening 6 is substantially the same as the area of the bottom side of the ventilation path 5,
Very large. Therefore, the foreign matter D accumulated in the ventilation path 5 naturally falls through the widened bottom opening 6. Thus, the foreign matter D can be automatically removed.

The foreign matter D not removed by the natural fall is manually removed by the operator after the drying step is completed. Also in the case of manual operation, since the lower part of the louver is already widened, labor for disassembly and assembly can be omitted. Therefore, there is no need to reassemble after the cleaning operation is completed.

In the exhaust louver 1 of the first embodiment,
Since the movable portion 2 automatically operates under its own weight, there is an advantage that the foreign matter D is automatically removed for each drying process only by performing a normal drying process.

[Second Embodiment] FIG. 6 shows a drying louver 1a of a grain dryer according to a second embodiment of the present invention. FIG.
As shown in FIG. 2, the drying louver 1a
It has the same configuration as the drying louver 1 of the first embodiment, except that one end of a and 7b protrudes, and that it has air cylinders 42a and 42b as driving means of the movable part 3. Therefore, for the sake of simplicity, the same components are denoted by the same reference numerals and the description thereof will be omitted, and only different points will be described.

In FIG. 6, one ends of the swing shafts 7a and 7b are formed to protrude to one side of the louver 1a. Locking tools 41a and 41b are fixed to the tips, respectively.

On the other hand, the tip of the piston rod 43a of the air cylinder 42a is locked by the locking tool 41a of the swing shaft 7a, and the tip of the piston rod 43b of the air cylinder 42b is locked by the lock of the swing shaft 7b. It is locked to the tool 41b.

With this configuration, the air cylinders 42a,
By operating 2b, the swing shafts 7a and 7b are swung by a predetermined angle. Compared with the first embodiment, the configuration is slightly complicated, but there is an advantage that the movable portion 3 of the louver 1a can be operated reliably.

If the air cylinders 42a and 42b are reciprocated within a short time, the movable portion 3 of the drying louver 1a can be vibrated. That is, the air cylinder 4
2a and 42b also have the function of a vibration device. If this vibration is applied in a state where the foreign matter D is discharged as shown in FIG. 3 (c), there is an advantage that foreign matter D which adheres to the inner surface of the louver 1a and cannot be removed by natural fall alone can be removed.

It is needless to say that other driving means or vibration means such as an electric motor may be used in place of the air cylinder.

Third Embodiment FIGS. 7A and 7B show a drying louver 1b according to a third embodiment of the present invention. As shown in FIG. 7, the drying louver 1b is
a, bolts 4 for fixing the movable part 3 to one end of the
It has the same configuration as the drying louver 1 of the first embodiment, except that it has 4a and 44b. Therefore, for the sake of simplicity, the same components are denoted by the same reference numerals and the description thereof will be omitted, and only different points will be described.

As shown in FIG. 7B, the swing shafts 7a, 7
Bolts 44a and 44b are screwed into one end of b. By tightening the bolts 44a and 44b,
Since the bolts 44a are pressed against the end surfaces of the side plate 22a and the upper bottom plate 31a, and the bolts 44b are pressed against the end surfaces of the side plate 22b and the upper bottom plate 31b, swinging of the movable portion 3 can be prevented.

In this embodiment, during the season, the bolts 44a and 44b are tightened and used with the bottom opening 6 being small, and the bolts 4a and 44b are used during cleaning after the end of the season.
4a, 44b, loosen the side plates 22a, 22b and the upper bottom plate 31
Preferably, a and 31b are swung to widen the bottom opening 6.

It is needless to say that any fixing tool such as a nut and a pin can be used in addition to the bolt.

The drying louver of the present invention is preferably used for exhausting air as in the first to third embodiments described above, but can also be used for air supply. That is, it is preferable to use the conventional drying louver 51 shown in FIG. 8 for air supply, and to use the drying louver of the present invention for air discharge. The drying louvers of the invention may be used.

[0075]

According to the drying louver of the grain dryer of the present invention, it is possible to easily remove foreign matters such as straw chips and dust accumulated in the internal ventilation passage.

When the pair of first bottom plates and the pair of second bottom plates are oscillated by the pressure of the grain due to the pressure of the grain flow, straw dust, dust, and the like accumulated in the internal ventilation passage are removed. Foreign matter can be automatically removed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a drying louver of a grain dryer according to a first embodiment of the present invention.

FIG. 2A is an end view of a drying louver of the grain dryer according to the first embodiment of the present invention, and FIG. 2B is a partially enlarged view of an X part thereof.

FIG. 3A is a cross-sectional view showing a state in which a pair of upper bottom plates and a pair of lower bottom plates swing outward by their own weight in the drying louver of the grain dryer according to the first embodiment of the present invention; (B) is a cross-sectional view showing a state in which the pair of upper bottom plates and the pair of lower bottom plates are swung inward by the pressure of the grain, and (c).
FIG. 4 is a cross-sectional view showing a state in which the pair of upper bottom plates and the pair of lower bottom plates have been swung outward again by the removal of the grain pressure.

FIG. 4 is a front sectional view showing the internal structure of the grain dryer using the drying louver according to the first embodiment of the present invention.

FIG. 5 is a side sectional view showing the internal structure of the grain dryer using the drying louver according to the first embodiment of the present invention.

FIG. 6 is a partially cutaway perspective view of a drying louver of a grain dryer according to a second embodiment of the present invention.

FIG. 7A is a partially cutaway perspective view of a drying louver of a grain dryer according to a third embodiment of the present invention, and FIG. 7B is a partially enlarged view of a Y part thereof.

FIG. 8 is a partially cutaway perspective view of a drying louver of a conventional grain dryer.

[Explanation of symbols]

 1, 1a, 1b Drying louver 2 Non-movable part of drying louver 21a, 21b Top plate of non-movable part 22a, 22b Side plate of non-movable part 3 Movable part 31a, 31b of louver for drying Upper bottom plate 32a, 32b of moving part Lower bottom plate of movable part 4 Drying louver through hole 5 Drying louver ventilation path 6 Drying louver bottom opening 7a, 7b Drying louver swing axis 8 Air gap 9 Kernel 41a, 41b Lock of swing axis Tools 42a, 42b Air cylinders 43a, 43b Air cylinder piston rods 44a, 44b Bolts 50 Grain drying device 51 Prop 52 Grain tank 52a Grain tank storage chamber 52b Grain tank drying chamber 53 Roof 54 Air supply chamber 55 Discharge Air chamber 56 Rotary valve 57 Screw conveyor 58 Discharge port 59 Rotary valve 60 Blower 61 Elevator 62 Clear Trainer 63 for the switching valve 64 circulation pipe 65 for drying air supply louver 66 discharge pipe 67 inlet 68 disperser B foundation D foreign matter

Claims (9)

[Claims] A pair of side plates arranged apart from each other; a top plate connected to upper ends of the pair of side plates so as to close a gap between the pair of side plates; and a top plate connected to lower ends of the pair of side plates. A pair of first
A bottom plate, and a pair of second bottom plates connected to lower ends of the pair of first bottom plates at a predetermined angle with respect to the pair of first bottom plates, respectively, and the pair of side plates, the top plate, The pair of first bottom plates and the pair of second bottom plates form a ventilation path extending along the longitudinal direction of the pair of side plates, and the pair of second bottom plates extend in the longitudinal direction of the pair of side plates. A bottom opening extending along and communicating with the ventilation path, at least the pair of side plates and the top plate each have a plurality of through holes communicating with the ventilation path; A grain, wherein the bottom plate and the pair of second bottom plates are each swingable with respect to the pair of side plates, and the swinging changes the size of the bottom opening. Louver for drying the dryer. 2. When the angle between the pair of first bottom plates and the pair of second bottom plates is substantially parallel to the pair of side plates, the pair of second bottom plates is formed. The louver for drying of a grain dryer according to claim 1, wherein the bottom plate is set so as to protrude outside the pair of side plates. 3. The louver for drying a grain dryer according to claim 2, wherein an angle formed between the pair of first bottom plates and the pair of second bottom plates is more than 90 ° and less than 180 °. 4. A first state in which the area of the bottom opening is smaller than the area of the ventilation path on the side of the bottom opening due to the swinging of the pair of first bottom plates and the pair of second bottom plates; The louver for drying a grain dryer according to claim 1, wherein the louver can take a second state whose area is substantially equal to or larger than the area of the ventilation path on the bottom opening side. 5. A first state in which kernels hardly enter the inside of the ventilation path through the bottom opening due to swinging of the pair of first bottom plates and the pair of second bottom plates, and The louver for drying a grain dryer according to claim 1, wherein the louver can be in a second state in which foreign matters accumulated inside can easily fall. 6. When the pair of first bottom plates and the pair of second bottom plates swing inward due to the pressure of the grains contained in the outside of the drying louver, and the pressure of the grains disappears. The louver for drying a grain dryer according to any one of claims 1 to 5, wherein the louver is configured to swing outward. 7. The pair of first plates with respect to the pair of side plates.
Fixing means for fixing the bottom plate and the pair of second bottom plates is provided, and when the fixing means is in an operating state, the swinging of the pair of first bottom plates and the pair of second bottom plates is prevented, and the fixing is performed. The louver for drying a grain dryer according to any one of claims 1 to 5, wherein the pair of first bottom plates and the pair of second bottom plates become swingable by releasing an operation state of the means. 8. A driving means for swinging the pair of first bottom plates and the pair of second bottom plates, and the pair of first bottom plates and the pair of second bottom plates are operated by operating the driving means. The louver for drying a grain dryer according to claim 1, wherein the louver swings. 9. A vibration unit for applying vibration to the pair of first bottom plates and the pair of second bottom plates, and the pair of first bottom plates and the pair of second bottom plates are operated by operating the vibration units. The louver for drying a grain dryer according to any one of claims 1 to 8, wherein the louver is configured to remove foreign matter attached to the inside of the grain dryer.