JPH0544711Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention uses a so-called cross-flow method to increase grain flow, which is divided into front and rear directions in a drying passage, and then changes from left to right after passing through the drying passage. Even if the fluidity of the moisture grains is improved to allow efficient drying work, the grains discharged from the cross-flow feed-out chamber into the take-out chamber are flown down to the conveyance gutter, and the hot-air blowing chamber The grains are stirred and mixed by dry hot air blown into the removal chamber, so that they do not become dense in the drying passage, and the temperature of the grains does not drop even during the cross-flow process, allowing the grains to be ventilated and dried again. The dust is separated by the air sorting action of dry hot air, which causes the dust to be discharged into the dust exhaust air chamber, making it possible to obtain high-quality dried grains containing no dust at a high rate even though they are high-moisture grains. Concerning the completion of the grain dryer that can be done.

Conventional Technology Conventionally, in a drying passage, the flow of grains divided into front and back directions is changed from side to side after passing through the drying passage, which is the so-called cross-flow method, to further improve the fluidity of high-moisture grains. A grain dryer capable of finishing and drying even high-moisture grains evenly and with good quality was developed before this application was filed, for example, in
It is stated in Publication No. 55037, and its contents are
The diagram will be explained. That is, a hot air blowing chamber 2 and a dust exhausting air chamber 3 are symmetrically provided on both left and right sides of the lower half of the dryer main body 1, which is in the shape of a rectangular cylinder long in the front and back direction. 3, a plurality of hot air chambers 4 communicating with the hot air blowing chamber 2 and a plurality of exhaust chambers 5 communicating with the dust removal chamber 3 are arranged with a width between both chambers 4 and 5 in a direction perpendicular to the horizontal direction. The plurality of drying passages 6 are constructed alternately so that narrow drying passages 6 are formed.
A plurality of intersecting feeding chambers 8 are formed at the lower end by chevron-shaped partition walls 7 arranged in multiple rows along the horizontal direction directly below the drying passage 6, the hot air chamber 4, and the exhaust chamber 5.
The feed rolls 9 are connected to each other and are rotatably mounted on a shaft along the horizontal direction at the bottom of each cross-flow feed-out chamber 8, and are surrounded by the hot air blowing chamber 2, the dust exhaust air chamber 3, and the feeding chamber 8. Removal chamber 10
It was constructed with the image in mind.

Problems that the invention aims to solve By the way, when drying grain using a conventional grain dryer of this type, the grain to be dried contains a lot of dust, and this If it is not removed quickly, the grains to be dried will not flow down due to the contamination of dust, or the grains will flow unevenly, making it difficult to finish and dry the high-moisture grains uniformly and with good quality. Can not.

However, in the above-mentioned known grain dryer, a means is adopted to remove dust during the process of the grain being dried being sequentially passed through the main body of the dryer while being dried in an intersecting state and then being discharged into the unloading chamber. As a result, a large number of members are required for dust removal, and the structure becomes complicated.

In addition, the grains that flow sequentially from the inside of the dryer to the take-out chamber are simply dried by the drying hot air as they flow down the drying passage. As the density of the grains passing through the aisles increases, the amount of hot drying air blown decreases, making it impossible to speed up the drying of high-moisture grains.In order to eliminate shell cracking, high-moisture grains are dried at low temperatures. When the drying rate was increased, a problem also occurred in that the drying rate became slower.

Means for Solving the Problems The present invention solves the above-mentioned problems, and the details thereof will be explained below using FIGS. 1 and 2, which correspond to embodiments.

That is, the dryer main body 101 is formed into a horizontally long rectangular tube shape that is long in the front-rear direction. and the dryer main body 1
Hot air ventilation chamber 102 and dust exhaust ventilation chamber 1 are installed on both left and right sides of 01.
03 are provided facing each other.

Between the hot air blowing chamber 102 and the dust exhaust chamber 103, there are a plurality of hot air chambers 104 communicating with the hot air blowing chamber 102 and a plurality of exhaust chambers communicating with the dust exhausting chamber 103 in a direction perpendicular to the horizontal direction. 106 and both chambers 10
4 and 106 so that a narrow drying passage 108 is formed between them.

The lower end of the plurality of drying passages 108 is the drying passage 1
08. A chevron-shaped partition wall 1 arranged in multiple rows along the horizontal direction directly below the hot air chamber 104 and the exhaust chamber 106
A plurality of cross-flow downward dispensing chambers 1 formed by 10
11 respectively.

The lower part of each of the cross-flow downward feeding chambers 111 is
A take-out chamber 118 surrounded by a hot air blowing chamber 102, a dust exhaust chamber 103, and a cross-flow downward feeding chamber 111.
I'm looking into it. The lower part of the hot air blowing chamber 102 is an unloading gutter 119 installed horizontally at the bottom of the unloading chamber 118.
The left and right side walls of the take-out chamber 118 which are in contact with the hot air blowing chamber 102 are formed into ventilation plates 123, 123, extending longer toward the dust exhaust air chamber 103 side than the hot air blowing chamber 102. The above-mentioned take-out chamber 118 is connected to the dust exhaust air chamber 1 via the air exhaust path 124.
03, the grains are dried in two stages in the take-out chamber 118, and at the same time, dust is accurately air-selected.

Operation If the grains to be dried are now supplied into the dryer main body 101, the grains are filled into the drying passage 108, the cross-flow feed-out chamber 111, and the dryer main body 101 above the drying passage 108, and are filled into the hot air chamber 104 And the entire exhaust chamber 106 is closed with grains.

In the above manner, a predetermined amount of grain is delivered to the dryer body 1.
01 is filled, the supply is stopped, dry hot air is generated in the hot air blowing chamber 102, and at the same time, the inside of the dust exhausting air chamber 103 is brought into a negative pressure state.

Then, a part of the dry hot air generated in the hot air blowing chamber 102 is transferred from the hot air blowing chamber 102 to the plurality of hot air chambers 1 due to the negative pressure action in the dust exhaust air chamber 103.
04, and some other dry hot air is passed through the ventilation plate 12.
3,123 into the extraction chamber 118. Therefore, some of the dry hot air that entered the plurality of hot air chambers 105 then exits from the hot air chambers 105 and enters the drying passage 108.
, enter the ventilation chamber 107, and then enter the ventilation chamber 1.
After being sucked into the dust exhaust air chamber 103 from 07, the dust is concentratedly exhausted to a far distance outside the machine. Therefore, the grains flowing down inside the dryer main body 101 due to the grain feeding action are first divided into the hot air chamber 105 and the exhaust chamber 107, enter the front-back drying passage 108, and then sequentially pass through the drying passage 108. The grains are dried by the circulating dry hot air during the vertical flow down, and after passing through the drying passage 108, the grains are then fed out in the cross flow direction, exhibiting a so-called cross flow state in which the flow changes from left to right due to the chevron partition wall 110. After being deposited in the chamber 111, it is sequentially discharged into the take-out chamber 118 by a feeding action.

Therefore, the flow direction of the grains when they flow down the drying passage 108 is changed to the orthogonal direction when they fall into the cross-flow dispensing chamber 111, so that grains with different initial moisture contents are transferred to the cross-flow dispensing chamber 111. 11
1, the grains are effectively stirred and mixed, and even though the grains have different initial moisture contents, they are uniformly dried by the drying hot air through multiple circulation flow operations without causing uneven drying. Depending on the condition, the fluidity of the grain is improved and the grain is flowed down evenly without uneven flow. The dried grains containing a lot of dust discharged in a scattered state in the take-out chamber 118 are transferred from the hot air blowing chamber 102 to the ventilation plate 123.
The grains are exposed to some of the dry hot air that is blown into the take-out chamber 118 through 123, and together with the cross-flow condition, the grains receive more vigorous stirring and mixing, improving fluidity and drying again without lowering the grain temperature. Furthermore, by keeping the density of the grains in the drying passage 108 low, high drying efficiency can be obtained without reducing the amount of drying hot air blown. 11
8, and only the dust is suctioned and discharged together with the exhaust hot air through the exhaust air passage 124 into the dust exhaust air chamber 103, and then concentratedly exhausted outside the machine.

Therefore, the dried grains discharged into the take-out chamber 118 contain less dust, and the drying hot air flowing across the grains further accelerates drying.
If the dried grains are circulated and returned several times, the grains will be dried to a desired moisture content.

Embodiment An embodiment of the grain dryer according to the present invention will be described with reference to the drawings.

In the drawings, reference numeral 101 denotes a dryer main body having a rectangular cylindrical shape that is long in the front-rear direction, and a hot air blowing chamber 102 and a dust exhaust air chamber 103 are provided along the horizontal direction on both left and right sides of the dryer main body 101. Provided oppositely. The hot air blowing chamber 102 and the dust exhausting chamber 1
03, there is a hot air ventilation chamber 102 and a ventilation window 1 on one side in a direction orthogonal to the horizontal direction.
A hot air chamber 104 consisting of a plurality of stopper-shaped hot air chambers 104 connected via 05, and a dust exhaust chamber 103 and an exhaust window 10 on one side.
A plurality of air exhaust chambers 106 connected via air vents 7 are installed alternately so that a drying passage 108 is formed between the hot air chamber 104 and the air exhaust chamber 106. Hot air chamber 10 on the upper end side
4 and a tempering tank 10 formed in the upper part of the exhaust chamber 106
9, and its lower end is connected to hot air chamber 1.
04 and the exhaust chamber 106 are connected to a plurality of cross-flow downstream feeding chambers 111 formed by chevron-shaped partition walls 110 arranged in a plurality of rows along the horizontal direction. The hot air chamber 104 and the exhaust chamber 106 both have sides facing the drying passage 108 with ventilation surfaces 112.
and 113 with open lower parts 114 and 115, and a hot air chamber 104 and an exhaust air chamber 106.
The inside thereof is connected to a cross-flow downward dispensing chamber 111.

Therefore, the lengths of the hot air chamber 104, the exhaust chamber 106, and the drying passage 108 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 109 is high, , the ventilation window 105 and the ventilation window 1 may be able to increase their durability without causing the hot air chamber 104 and the ventilation chamber 106 to curve.
07 is also increased, the blowing resistance of the dry hot air blown from the hot air blowing chamber 102 is reduced, and the amount of air blown from the hot air blowing chamber 102 can be increased. In addition, the lower portions of the hot air chamber 104 and the exhaust chamber 106 are opened 114 and 1.
15, even if part of the dust mixed into the grains flowing down the drying passage 108 enters the hot air chamber 104 and the exhaust chamber 106 from the ventilation surfaces 112 and 113, the dust and the like will be removed from the hot air chamber 104. The dust is not deposited on the inner bottom of the exhaust chamber 106 and flows smoothly into the lower cross-flow dispensing chamber 111, thereby preventing a fire accident in the grain dryer due to ignition and combustion of accumulated dust and the like.

Moreover, the hot air chamber 104 and the exhaust air chamber 106
A plurality of cross-flow downward feeding chambers 111 are formed by a plurality of chevron-shaped partition walls 110 directly under the drying passage 108, so that after passing through the drying passage 108, the grain flow divided in the front-rear direction in the drying passage 108 is then transferred in the left-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 111 is always filled with grains that have flowed down through the drying passage 108, leakage of hot air and dust air can be prevented.

A feed-out port 116 is opened along the horizontal direction in each valley of the chevron-shaped partition wall 110, and a feed-out roll 1 that is intermittently rotated is located at the position of the feed-out port 116.
17 is rotatably mounted on a shaft. A hot air blowing chamber 102 surrounds the lower part of the cross-flow downstream feeding chamber 111,
A dust removal chamber 103, a cross-flow downward feeding chamber 111, and a take-out chamber 118 surrounded by the front and rear wall plates of the dryer main body 101 are provided, and a take-out gutter 119 is installed at the center of the bottom of the dryer main body 101.
This connects the take-out gutter 119 to the take-out chamber 118. Note that a carry-out screw 120 is horizontally suspended inside the carry-out gutter 119 so as to be freely rotatable.
One end of the carry-out gutter 119 is connected to the lower part of a circulation elevator 121 attached to one side of the dryer main body 101, and the upper part of the circulation lift 121 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 22.

The lower part of the hot air blowing chamber 102 arranged on one side of the dryer main body 101 extends longer toward the dust exhausting air chamber 103 than the carry-out gutter 119 installed horizontally at the bottom of the take-out chamber 118, so that the hot air blowing chamber 102 It is formed to cover the lower part of the take-out chamber 118. Therefore, the left and right side walls of the take-out chamber 118 in contact with the hot-air blowing chamber 102 are formed with ventilation plates 123, 123, so that a part of the dry hot air generated in the hot-air blowing chamber 102 passes through the ventilation plates 123, 123 to the take-out chamber 118. Forcefully force the steam inside.

Reference numeral 124 denotes an air exhaust passage provided in the partition wall 125 between the dust exhaust air chamber 103 and the take-out chamber 118, in which the dust separated by the wind sorting action performed in the take-out chamber 118 is removed together with the exhaust hot air. It is sucked and introduced into the chamber 103.

Front side of hot air blowing room 102 and dust exhaust air room 103
A burner device 126 containing a burner 127 therein and a suction/exhaust device 128 rotatably containing a suction/exhaust fan 129 are installed on the rear side, and the burner device 126 and the hot air blowing chamber 102 are connected to each other.
Also, the suction/exhaust device 128 and the dust exhaust/air chamber 103 are connected.

Effects of the invention According to the invention, the grains flowing down the drying passage of the dryer main body are exposed to the hot air emitted from the hot air blowing chamber while exhibiting a cross-flow condition, so that together with the cross-flow condition, the grains are more vigorously agitated. The fluidity is improved by the mixing action, and the grain is dried again without lowering the grain temperature.Moreover, the density of the grain in the drying passage is kept low, improving the drying efficiency without reducing the amount of hot drying air. As much as possible, the dust mixed in the dried grains can be separated and sorted using dry hot air, and dried grains with less dust can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain dryer according to the present invention, in which Fig. 1 is a longitudinal sectional front view, Fig. 2 is a side view with a part of the main part cut away, and Fig. 3 is a view of a conventional grain dryer. FIG. 101...Dryer body, 102...Hot air blowing chamber, 103...Dust exhaust air chamber, 104...Hot air chamber, 1
06...Exhaust room, 118...Drying passage, 110...
...Chevron partition wall, 111...Cross flow downward feeding chamber, 1
18... Taking out room, 119... Taking out gutter, 123,
123... Ventilation plate, 124... Ventilation duct.

Claims (1)

[Scope of utility model registration request] A hot air blowing chamber and a dust exhausting air chamber are provided facing each other on both the left and right sides of the main body of the dryer, which is long in the front and back direction. A plurality of hot air chambers leading to the ventilation chamber and a plurality of exhaust chambers leading to the dust exhaust air chamber are constructed alternately so that a narrow drying passage is formed between the two chambers, and the lower ends of the plurality of drying passages are connected to the hot air. The lower part of each cross-flow discharge chamber is connected to a plurality of cross-flow discharge chambers formed by multiple rows of chevron-shaped partition walls arranged along the horizontal direction directly below the ventilation chamber and the ventilation chamber, and the lower part of each cross-flow discharge chamber is connected to When looking into a take-out room surrounded by a blower room, a dust exhaust air room, and a cross-flow discharge room, the lower part of the hot air blower room is closer to the dust exhaust air room than the take-out gutter installed horizontally at the bottom of the take-out room. This grain dryer is characterized in that the left and right side walls of the take-out chamber that are in contact with the hot air blowing chamber are formed into ventilation plates, and the take-out chamber is connected to the dust exhaust air chamber through an air exhaust passage.