JPH0539433Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention utilizes horizontally installed members in multiple stages to reinforce the interior of the storage chamber as a passage for hot air or exhaust air to store hot air in the storage chamber. By blowing some of the drying hot air on the dried grains to raise the grain temperature, the moisture diffusion effect of the grains themselves is activated, and high quality dry grains without shell cracking can be efficiently obtained. Regarding grain drying equipment.

BACKGROUND TECHNOLOGY Conventionally, the flow of grain is divided in the front and back direction by a plurality of drying passages, and after passing through the drying passage, the flow is changed to the left and right by chevron-shaped partition walls arranged in multiple rows along the horizontal direction. A grain dryer that uses a cross-flow system to evenly stir and mix grains with different initial moisture values and dry them uniformly has been known since it was described in, for example, Japanese Patent Publication No. 55037/1983 prior to the filing of this application. , the contents will be explained with reference to FIG.

That is, a storage chamber 2, a ventilation drying section 3, and a take-out chamber 4 are stacked three-dimensionally in order from the upper section to the lower section. A hot air blowing chamber 5 and a dust exhausting air chamber 6 are provided symmetrically in the direction, and between the hot air blowing chamber 5 and the dust exhausting air chamber 6 of the ventilation drying section 3, hot air is oriented in a direction orthogonal to the horizontal direction. A plurality of hot air chambers 7 communicating with the ventilation chamber 5 and a plurality of exhaust chambers 8 communicating with the dust exhaust air chamber 6 are constructed alternately so that a narrow drying passage 9 is formed between the two chambers 7 and 8. The lower ends of the plurality of drying passages 9 are provided with chevron-shaped partition walls 1 arranged in a plurality of rows along the horizontal direction directly below the drying passages 9, the hot air chamber 7, and the ventilation chamber 8.
A plurality of cross-flow downward dispensing chambers 10 formed by 1
. . . , and the lower part of each cross-flow feeding chamber 10 is a freely rotatable feeding roll 12.
It is constructed by connecting to the extraction chamber 4 through the.

Problems that the invention aims to solve By the way, in conventional grain drying equipment of this type, the grain that was flowed in a cross-flowing state within the main body of the dryer was dried by being exposed to drying hot air flowing in the ventilation drying section. Afterwards, the grain is circulated back into the storage chamber via the take-out chamber and elevator, where it is stored and dried again with dry hot air. Because a portion of the grain is not distributed, it is gradually cooled and the moisture diffusion effect of the grain itself is reduced. Therefore, when slowly cooled grains reach the ventilation drying section from the storage chamber and are rapidly exposed to high-temperature dry hot air there, only the surface is dried while the internal moisture does not ooze out to the surface. A problem arose in that a cracking phenomenon occurred and low-quality dried grains were obtained.

Means for Solving the Problems The present invention has a simple structure that allows part of the dry hot air to flow through the grains stored in the storage chamber to increase the temperature of the grains in the stagnant state and diffuse moisture inside the grains. The present invention aims to promote the operation and thereby solve the above-mentioned problems, and its contents will be explained below using FIGS. 1 and 2, which correspond to embodiments.

That is, from the upper stage to the lower stage, the storage chamber 10
2. A dryer main body 101 in the shape of a rectangular tube long in the front-rear direction is provided, in which a ventilation drying section 103 and a take-out chamber 104 are sequentially stacked three-dimensionally. A hot air blowing chamber 105 and a dust exhausting chamber 106 are symmetrically provided along the horizontal direction on both left and right sides of the dryer main body 101.

The ventilation drying section 103 has a plurality of hot air chambers 107 communicating with the hot air blowing chamber 105 and a plurality of exhaust chambers 109 communicating with the dust removal chamber 106 in a direction perpendicular to the horizontal direction, with an upper end between the two chambers 107 and 109. They are constructed alternately so as to form narrow drying passages 111 whose sides communicate with the storage chamber 102.

Inside the storage chamber 102, there are reinforced ventilation bodies 12 connected at both ends to bypass pipes 123 connected to the hot air blowing chamber 105 and the dust exhaust air chamber 106, respectively.
4,125... are horizontally arranged in multiple stages along the horizontal direction.

Ventilators 124, 125... are located inside the bypass tube 123 on both sides of the vents 124, 125...
Buried detectors 128 and 129 that detect the buried state of
Dampers 130, 131, which are automatically opened and closed by
132 and 133 are rotatably mounted on shafts.

Function The grain drying apparatus 101 in which the ventilation bodies 124 and 125 are installed horizontally in two stages, upper and lower, will now be described.

At the start of drying, a predetermined amount of grain to be dried is filled into the storage chamber 102 and the ventilation drying section 103.
As described above, a predetermined amount of grain is delivered to the dryer main body 10.
1, the supply is stopped and at the same time the inside of the dust exhaust air chamber 106 is brought into a negative pressure state, and then dry hot air is generated inside the hot air blowing chamber 105.

Then, the dry hot air is sucked and filled into the hot air chamber 107 by the negative pressure action on the dust exhaust air chamber 106 side.
Then, after passing through the drying passage 111 from the ventilation surface,
The dust enters the air exhaust chamber 109 from the ventilation surface, is then sucked into the dust exhaust air chamber 106, and finally is concentratedly exhausted outside the machine.

Therefore, the grain to be dried is transferred from the storage chamber 102 to the ventilation drying section 103 in the plurality of rows of drying passages 1.
After being dried by being exposed to dry hot air as it is successively and intermittently flowed down through 11, it is discharged into the take-out chamber 104. Then, the heat-retaining grain discharged into the take-out chamber 104 is circulated and flowed into the storage chamber 102 by a conveying member, and after being stored, it is returned to the ventilation drying section 10.
3, it is further dried by being exposed to dry hot air. Therefore, the grains are stored in the dryer body 10
The grains are dried to a predetermined moisture content by being circulated and flowed through the chamber. Incidentally, when the grains in a heated state are stored in the storage chamber 102 for a certain period of time, the grains are gradually cooled, and while the grain temperature has decreased, they are exposed to high temperature drying hot air in the ventilation drying section 103 to dry the surface. This causes the shell cracking phenomenon to occur.

However, in the present invention, for example, the first
As shown in the figure, in the ventilation bodies 124 and 125 in which grains to be dried are arranged in two stages, the ventilation body 1 in the lower stage.
When the circulation drying operation is carried out with the storage chamber 102 filled with grains to be dried so that the storage chamber 102 is filled with grains 25, two Buried detector 128,1
Due to the detection operation of 29, the upper vent 124 is not buried by grains, but the lower vent 125 is buried.
is detected to be buried by grains.

Then, based on the detection signals from the two buried detectors 128 and 129, the upper and lower ventilation bodies 12
Dampers 130, 131, 132, 1 are mounted axially in the bypass cylinder 123 to which the dampers 130, 131, 132, 1 are connected, respectively.
33 are automatically opened and closed so as to be in the state shown in the first figure, and the upper ventilation body 124 is connected to the hot air blowing chamber 105.
On the other hand, it is connected to the dust exhaust air chamber 106, and the lower ventilation body 125 is connected to the hot air ventilation chamber 1.
05, while being disconnected from the dust exhaust air chamber 106.

Therefore, if a part of the dry hot air is caused to flow from the hot air blowing chamber 105 into the bypass pipe 123 under the above-mentioned conditions by negative pressure, the dry hot air will pass through the bypass pipe 123 and flow from the lower ventilation body 125. After ejecting into the grain in the storage chamber 102 and increasing the grain temperature of the stored grain, it enters the upper ventilation body 124 and then passes through the bypass tube 123 to the dust exhaust air chamber 10.
It is sucked and distributed into 6. Therefore, due to the above action, the upper ventilation body 124 becomes an exhaust path, but the lower ventilation body 125 becomes a hot air path.

Therefore, the heat-retaining grain stored in the storage chamber 102 is not slowly cooled during storage and the temperature of the grain is further increased, so that the moisture inside the grain is quickly moved to the surface and ventilation is carried out. No matter how high the drying hot air is exposed to in the drying section 103, the shell cracking phenomenon does not occur, and high quality dried grains can be obtained. Note that when the grain to be dried is filled to the point where the upper vent 124 is filled, the damper 130 becomes horizontal and the damper 131 becomes vertical due to the detection operation of the buried detector 128, and the upper vent 124 is placed in a vertical state.
4 serves as a hot air path and blows out dry hot air into the packed grains to raise the grain temperature, and at the same time directs the dry hot air blown out from the upper and lower ventilation bodies 124 and 125 directly through the opening 102a by negative pressure action. Dust exhaust air chamber 1
Air is sucked and exhausted into 06.

Embodiment An embodiment of the grain drying apparatus according to the present invention will be described with reference to the drawings. In Figures 1 and 2,
Reference numeral 101 denotes a dryer main body having a rectangular cylindrical shape long in the front-rear direction and configured by sequentially stacking a storage chamber 102, a ventilation drying section 103, and a take-out chamber 104 three-dimensionally from the upper stage toward the lower stage; Machine body 101
On both left and right sides, there are hot air blowing chambers 105 along the horizontal direction that are stopped at the ventilation drying section 103 position.
A vertical dust exhaust air chamber 106 is provided along the horizontal direction so that the upper end opening 102a side is connected to the inside of the storage chamber 102.

Then, the hot air blowing chamber 105 and the dust exhausting chamber 10
The ventilation drying section 103 provided between the hot air ventilation chamber 10 and the hot air ventilation chamber 103 has one side facing the direction orthogonal to the horizontal direction
5 and a plurality of hot air chambers 107 connected to each other via a blowing window 108, and a dust exhaust air chamber 106 on one side.
A plurality of air exhaust chambers 109 connected to each other through air exhaust windows 110 are alternately installed so that a drying passage 111 is formed between the hot air chamber 107 and the air exhaust chamber 109. . The upper end side of the drying passage 111 is connected to the storage chamber 102, and the lower end side thereof is formed by a chevron-shaped partition wall 113 arranged in multiple rows along the horizontal direction directly below the hot air chamber 107 and the exhaust air chamber 109. It is connected to a plurality of cross-flow downstream dispensing chambers 112. The hot air chamber 107 and the exhaust chamber 109 are connected to the drying passage 11.
The side faces facing 107 and 10 are both formed as ventilation surfaces, and the lower part is open to form a hot air chamber 107 and a ventilation chamber 10.
The inside of 9 is connected to a cross-flow downward dispensing chamber 112.

Therefore, the lengths of the hot air chamber 107, the exhaust chamber 109, and the drying passage 111 can be made short, and at the same time, the number of them can be increased, so that even if the deposition pressure of the grains filled in the tempering tank 102 is large, , the ventilation window 108 and the ventilation window 1 may be able to increase their durability without causing the hot air chamber 107 and the ventilation chamber 109 to curve.
10 can be increased to reduce the blowing resistance of the dry hot air blown from the hot air blowing chamber 105 and to increase the amount of air blown from the hot air blowing chamber 105. Furthermore, by opening the lower portions of the hot air chamber 107 and the exhaust chamber 109, part of the dust mixed in the grain flowing down the drying passage 111 enters the hot air chamber 107 and the exhaust chamber 109 from the ventilation surface. Even if the dust etc. is removed from the hot air chamber 10,
7 and the inner bottom of the exhaust chamber 109, and all of the dust flows smoothly down to the lower cross-flow dispensing chamber 112, thereby preventing fire accidents in the grain dryer due to ignition and combustion of accumulated dust and the like.

In addition, a hot air chamber 107 and a ventilation chamber 109
A plurality of cross-flow downward feeding chambers 112 are formed by a plurality of chevron-shaped partition walls 113 directly under the drying passage 111, so that after passing through the drying passage 111, the grain flow divided in the front and back direction in the drying passage 111 is then transferred in the left and right direction. By changing the flow to cross flow, it is possible to efficiently stir and mix grains with different initial moisture content values, and at the same time improve the fluidity of grains, eliminating uneven drying and uneven flow of grains and drying them uniformly. .

Note that, since the cross-flow down-feeding chamber 112 is always filled with grains that have flowed down through the drying passage 111, leakage of hot air and dust air can be prevented.

A feed-out port 114 is opened along the horizontal direction in each valley of the chevron-shaped partition wall 113, and a feed-out roll 1 that is intermittently rotated is located at the position of the feed-out port 114.
15 is rotatably mounted on a shaft. A hot air blowing chamber 105 surrounds the lower part of the cross-flow downstream feeding chamber 112,
A take-out chamber 104 surrounded by a dust exhaust air chamber 106, a cross-flow under-feed chamber 112, and the front and rear wall plates of the dryer main body 101 is provided, and a take-out gutter 116 is installed at the center of the bottom of the dryer main body 101.
This connects the discharge gutter 116 to the discharge chamber 104. Note that a carry-out screw 117 is horizontally suspended inside the carry-out gutter 116 so as to be freely rotatable.
One end of the carry-out gutter 116 is connected to the lower part of a circulation elevator 118 attached to one side of the dryer main body 101, and the upper part of the circulation lift 118 is connected to the carry-in gutter 1 installed horizontally along the horizontal direction on the top of the dryer main body 101.
Connect to the supply side of 19.

Front side of hot air blowing room 105 and dust exhaust air room 106
On the rear side, a burner device 120 housing a burner 121 therein and a suction/exhaust device 122 rotatably housing a suction/exhaust fan 122a inside are installed, respectively.
Also, the suction/exhaust device 122 and the dust exhaust air chamber 106 are connected.

Reference numeral 123 is a torii-shaped bypass tube whose one end is connected to the hot air blowing chamber 105 and the other end is connected to the dust exhaust chamber 106, and is disposed on the back side of the dryer main body 101. Reference numerals 124 and 125 denote a plurality of reinforcing and reinforcing ventilation bodies that are horizontally installed in upper and lower two stages in the storage chamber 102 in the horizontal direction. The lower part is opened and one end is a ventilation window 1.
It is connected to an upper bypass cylinder 123a and a lower bypass cylinder 123b in the lateral direction via pipes 26 and 127, respectively.

Then, the left and right sides of the upper bypass tube 123a connected to the upper ventilation body 124 and the lower ventilation body 1
25, there are buried detectors 128, 1 disposed at the same height as the setting positions of the respective vents 124, 125 on the left and right sides of the lower bypass tube 123b connected to the lower bypass tube 123b.
Damper 1 that opens and closes automatically according to the detection operation of 29
30, 131 and 132, 133 are rotatably mounted on shafts.

Effects of the Invention In short, since the present invention has the above-mentioned specific configuration, the area of the drying passage 111 is made as large as possible so that even if the amount of hot air generated is the same, the hot air chamber 107
Inside the storage chamber 102, both ends are connected to the hot air blowing chamber 1, which makes it possible to easily perform efficient drying by supplying a large amount of hot air with little loss of hot air.
05 and the bypass pipe 1 connected to the dust exhaust air chamber 106
Reinforcement and ventilation bodies 124 and 1 connected to 23, respectively
25 are horizontally installed in multiple stages along the horizontal direction, and automatic opening/closing is performed by embedded detectors 128, 129 that detect the buried state of the vents 124, 125 in the bypass tubes 123 located on both sides of the vents 124, 125. Dampers 130, 131 and 1
32 and 133 are rotatably mounted on an axis, the ventilation body 124 buried by the grains filled in the storage chamber 102 can be placed in the hot air path, and the ventilation body 12 that is not buried can be placed in the hot air path.
5 is used as an air exhaust passage, and a part of the dry hot air is blown into the grain through a bypass pipe 123 and a buried vent 125 to raise grain temperature and promote moisture diffusion and movement inside the grain. After that, the air can be discharged to the dust exhaust air chamber 106 through the ventilation body 125 in the unburied position, and as a result, the moisture diffusion and movement caused by the grains in the stagnant state being gradually cooled during storage is reduced. This effect prevents the shell cracking phenomenon from occurring and efficiently obtains high-quality dried grains.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain drying device according to the present invention, in which FIG. 1 is a longitudinal sectional front view, FIG. 2 is a side view with main parts cut away, and FIG. 3 is a view of a conventional grain drying device. FIG. 101...Dryer main body, 102...Storage chamber, 1
03... Ventilation drying section, 104... Removal chamber, 10
5...Hot air blowing room, 106...Dust exhaust air room, 107
... Hot air chamber, 109 ... Exhaust chamber, 123 ... Bypass pipe, 124,125 ... Ventilation body, 126,1
27... Ventilation window, 128, 129... Buried detector.

Claims (1)

[Scope of utility model registration request] A storage chamber, a ventilation drying section, and a take-out chamber are sequentially stacked three-dimensionally from the upper tier to the lower tier.A hot air blowing chamber and a dust removal chamber are installed along the horizontal direction on both left and right sides of the dryer body, which is long in the front and back direction and has a rectangular cylindrical shape. The ventilation drying section is provided with a plurality of hot air chambers communicating with the hot air blowing chamber and a plurality of exhaust chambers communicating with the dust exhaust chamber in the direction orthogonal to the horizontal direction in the ventilation drying section. Narrow drying passages are constructed alternately so as to form narrow drying passages whose upper ends communicate with the storage chamber, and inside the storage chamber there are reinforcing and reinforcing tubes connected to bypass pipes whose ends are connected to the hot air blowing chamber and the dust removal chamber, respectively. The vents are arranged horizontally in multiple stages along the horizontal direction, and dampers that are automatically opened and closed by embedded detectors that detect the buried state of the vents are rotatably installed in the bypass cylinders on both sides of the vents. A grain drying device characterized by a shaft rack.