JPH0528468Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a grain dryer that can efficiently dry grain while circulating it.

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, the hot air blowing chamber 2 and the 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. 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 in a narrow width direction between the two chambers 4 and 5 in a direction perpendicular to the horizontal direction. The drying passages 6 are constructed alternately so that a plurality of 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 promptly, the grains to be dried will not flow down while maintaining an accurate intersecting state due to the contamination of dust, or uneven flow will occur, making it impossible to finish and dry high-moisture grains uniformly and with good quality. .

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. Therefore, there are problems in that not only a large number of members are required for removing dust but also the structure becomes complicated.

The present invention has been developed in view of the above-mentioned problems of the conventional technology, and its purpose is to pass through the drying passage, after passing through the drying passage, the flow of grain is divided into front and back directions. Even if the so-called cross-flow method, in which the flow changes from side to side, improves the fluidity of high-moisture grains and enables efficient drying, hot air blowing removes the dust contained in the grains. It is quickly sorted and removed by the wind selection effect of dry hot air that flows from the chamber to the extraction chamber to the dust collection chamber, making it easy to obtain high-quality grains that do not contain dust, even if they are high-moisture grains. The aim is to provide a grain dryer that can.

Means for Solving the Problems The present invention is intended to solve the above-mentioned problems, and its contents will be explained below using FIGS. 1 to 3, which correspond to embodiments.

The dryer main body 101 is formed into a horizontally long rectangular tube shape that is long in the front-rear direction. And inside the dryer main body 101,
A plurality of hot air chambers 1 are arranged along the direction orthogonal to the horizontal direction.
05 and exhaust chambers 107 are constructed alternately so that a narrow drying passage 109 is formed between both chambers 105 and 107. At the lower end of the plurality of drying passages 109, there are a plurality of cross-flow discharge chambers 112 formed by chevron-shaped partition walls 111 disposed in a plurality of rows along the horizontal direction directly below the drying passage 109, the hot air chamber 105, and the exhaust chamber 107. They are connected to each. The lower ends of each of the cross-flow downstream dispensing chambers 112 are exposed to a dispensing chamber 119.

Hot air chamber 1 disposed within the dryer main body 101
05 Exhaust chamber 107 A dust exhaust chamber 102, a hot air blow chamber 103, and a dust collection chamber 104 are provided symmetrically along the horizontal direction on both left and right sides of the cross-flow delivery chamber 112 and the take-out chamber 119. Then, the dust exhaust air chamber 102 and the exhaust air chamber 107 are connected, and the hot air chamber 105 and the dust collection chamber 104 are connected. Also hot air blowing room 1
03 is connected to the dust collection chamber 104 through a ventilation passage 128, a take-out chamber 119, and a ventilation passage 129, and directs dry hot air across the inside of the take-out chamber 119 where dried grains containing a lot of dust are discharged in a scattered state. The structure is such that dust can be properly air-sorted in the take-out chamber 119 by being circulated through the air.

Operation If the grains to be dried are now supplied into the dryer main body 101, the grains are filled into the drying passage 109, the cross-flow feed-out chamber 112, and the dryer main body 101 above the drying passage 109, and are filled into the drying passage 109 and the cross-flow feed-out chamber 112. And the entire exhaust chamber 107 is closed with grains.

As described above, 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 103, and at the same time, the inside of the dust exhausting air chamber 102 is brought into a negative pressure state.

Then, the dry hot air generated in the hot air blowing chamber 103 passes through the hot air blowing chamber 103, the extraction chamber 119, and the dust collection chamber 104 into the plurality of hot air chambers 105 due to the negative pressure action in the dust exhausting chamber 102. The dust enters the dust chamber 102, exits from the hot air chamber 105, crosses the drying passage 109, enters the exhaust chamber 107, is sucked into the dust exhaust chamber 102 from the exhaust chamber 107, and is concentratedly discharged far outside the machine. Ru. 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 109, and then enter the drying passage 109.
The grains are dried by being exposed to the circulating dry hot air as they are sequentially flowed vertically down the inside, and then after passing through the drying passage 109, the grains exhibit a so-called cross-flowing state in which the flow changes from side to side due to the chevron partition wall 111. After being deposited in the cross-flow downward dispensing chamber 112, it is sequentially discharged into the unloading chamber 119 by the dispensing action.

Therefore, the flow direction of the grains when they flow down the drying passage 109 is changed to an orthogonal direction when they fall into the cross-flow dispensing chamber 112, so that grains with different initial moisture contents are transferred to the cross-flow dispensing chamber. 11
2, the grains are effectively stirred and mixed, and even grains with different initial moisture contents are dried uniformly 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 large amount of dust discharged in a scattered state into the take-out chamber 119 pass from the hot air blowing chamber 103 through the ventilation path 108, cross the inside of the take-out chamber 119, and further pass through the ventilation path 108.
Only dust is air-separated from the dried grains by being exposed to the dry hot air flowing towards the dust collection chamber 104 through 29, and the dust is carried to the dust collection chamber 104 by the circulating dry hot air, where the dust is accumulated and the dust removal work is performed.

Therefore, the dried grains discharged into the take-out chamber 119 contain less dust, and the drying hot air flowing across them accelerates the drying process.
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 that has a rectangular tube shape that is long in the front-rear direction, and a dust exhaust air chamber 102 and a hot air blower chamber 103 are provided along the horizontal direction in the lower half of the dryer main body 101 on the left and right sides. and dust collection room 1
04 are provided symmetrically.

At a position above the space between the dust exhaust air chamber 102 and the dust collection chamber 104, a plurality of end-stopped holes are connected at one side to the dust collection chamber 104 through a ventilation window 106, facing in a direction perpendicular to the horizontal direction. Hot air chamber 105 consisting of
and a plurality of air exhaust chambers 107 connected on one side to the dust exhaust air chamber 102 through an air exhaust window 108.
are installed alternately so that a drying passage 109 is formed between the hot air chamber 105 and the exhaust air chamber 107, and the upper end side of the drying passage 109 is connected to the air conditioner formed above the hot air chamber 105 and the exhaust air chamber 107. In addition to being connected to the pawn tank 110, the lower end thereof is connected to a plurality of cross-flow downstream feeding chambers 112 formed by chevron-shaped partition walls 111 arranged in a plurality of rows along the horizontal direction directly below the hot air chamber 105 and the exhaust chamber 107. It is connected. The hot air chamber 105 and the exhaust chamber 107 both have sides facing the drying passage 109 as ventilation surfaces 113 and 1.
14 and open the lower part 115 and 11
6, the interiors of the hot air chamber 104 and the exhaust chamber 107 are connected to a cross-flow downstream delivery chamber 112.

Therefore, the lengths of the hot air chamber 105, the exhaust chamber 107, and the drying passage 109 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 110 is high, , the ventilation window 106 and the ventilation window 1 may be able to increase their durability without causing the hot air chamber 105 and the ventilation chamber 107 to curve.
08 is also increased, the blowing resistance of the dry hot air blown from the hot air blowing chamber 103 is reduced, and the amount of air blown from the hot air blowing chamber 103 can be increased. In addition, the lower portions of the hot air chamber 105 and the exhaust chamber 107 are opened 115 and 1.
16, even if part of the dust mixed into the grain flowing down the drying passage 109 enters the hot air chamber 105 and the exhaust chamber 107 from the ventilation surfaces 113 and 114, the dust and the like will be removed from the hot air chamber 105. The dust is not deposited on the inner bottom of the exhaust chamber 107 and flows smoothly down to the lower cross-flow dispensing chamber 112, thereby preventing a fire accident in the grain dryer due to ignition and combustion of accumulated dust and the like.

Furthermore, a hot air chamber 105 and an exhaust chamber 107
A plurality of cross-flow downward feeding chambers 112 are formed by a plurality of chevron-shaped partition walls 111 directly under the drying passage 109, so that after passing through the drying passage 109, the grain flow divided in the front-rear direction in the drying passage 109 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 112 is always filled with grains that have flowed down through the drying passage 109, leakage of hot air and dust air can be prevented.

A feed-out port 117 is opened along the horizontal direction in each valley of the chevron-shaped partition wall 111, and a feed-out roll 1 that is intermittently rotated is located at the position of the feed-out port 117.
18 is rotatably mounted on a shaft. A hot air blowing chamber 103 surrounds the lower part of the cross-flow downward feeding chamber 112,
Dust collection chamber 104, feeding chamber 112, and dryer main body 1
A take-out chamber 119 surrounded by the front and rear wall plates of 01 is provided, as well as a hot air blowing chamber 103 and a dust collection chamber 10.
An unloading gutter 120 is arranged along the horizontal direction in the lower interval of the unloading chamber 1.
Connect to 19. Note that a carry-out screw 121 is rotatably horizontally suspended inside the carry-out gutter 120, and one end of the carry-out gutter 120 is connected to the dryer main body 10.
The upper part of the circulation elevator 122 is connected to the supply side of a carry-in gutter 123 installed horizontally along the horizontal direction at the top of the dryer main body 101.

Front side of hot air blowing room 103 and dust exhaust air room 102
On the rear side, a burner device 124 housing a burner 125 therein and a suction/exhaust device 126 rotatably housing a suction/exhaust fan 127 inside are installed, respectively, to connect the burner device 124 and the hot air blowing chamber 103.
Also, the suction/exhaust device 126 and the dust exhaust/air chamber 102 are connected.

The above-mentioned extraction chamber 119 is connected to the hot air blowing chamber 103 and the dust collection chamber 104, which are adjacent to each other on the left and right sides thereof, through ventilation passages 128 and 129, and removes dust from the dry hot air generated in the hot air blowing chamber 103. The hot air blowing chamber 10 is heated by the negative pressure generated in the wind chamber 102.
3, passes through the ventilation passage 128, crosses the interior of the extraction chamber 119, further passes through the ventilation passage 129, passes through the dust collection chamber 104, and flows toward the hot air chamber 105, so that it is discharged into the extraction chamber 119 in the form of particles. A large amount of dust contained in the dried grains is air sorted and removed into the dust collection chamber 104 for dust collection, and at the same time, drying hot air is directly applied to the discharged dried grains to further accelerate the drying of the grains. I am planning to do so. Note that the dust collected in the dust collection chamber 104 may be taken out to the outside by an appropriate means. Further, the ventilation passage 128 may be formed of a perforated plate if necessary.

Effects of the invention In short, the present invention has the above-mentioned technical means, so that the area of the drying passage 109 is made as wide as possible, and even if the amount of hot air generated is the same, a large amount of hot air can be delivered into the hot air chamber 105 without blowing loss. It is possible to improve the drying capacity by supplying a small amount of grain to each other, even if the grain has a high moisture content and has a different initial moisture content. Even if the grain dryer is capable of uniformly drying all grains without causing drying unevenness by flowing down in a crosswise manner so that the flow changes from side to side after passing through the passage 109 and agitating and mixing the grains, the hot air By configuring the ventilation chamber 103, the extraction chamber 119, and the dust collection chamber 104 to be connected to each other, the extraction chamber 119 is connected to the hot air ventilation chamber 103.
A large amount of dust contained in the dried grains discharged in a scattered state into the take-out chamber 119 is efficiently removed by dry hot air flowing across the interior toward the dust collection chamber 104. This not only allows the separated dust to be automatically collected into the dust collection chamber 104, but also further accelerates drying by blowing dry hot air again in the take-out chamber 119. be effective.

[Brief explanation of the drawing]

The drawings show one 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 similar to Fig. 1. FIG. 4 is a longitudinal sectional front view of the conventional example. 101...Dryer main body, 102...Dust exhaust air chamber,
103... Hot air blowing room, 104... Dust collection room, 10
5...Hot air chamber, 107...Exhaust air chamber, 109...Drying passage, 111...Chevron partition wall, 112...Cross flow downward delivery chamber, 119...Takeout chamber, 128,1
29...Ventilation duct.

Claims (1)

[Scope of utility model registration request] A plurality of hot air chambers and a plurality of exhaust ventilation chambers are constructed alternately along a direction perpendicular to the horizontal direction in a long dryer main body in the longitudinal direction so that a narrow drying passage is formed between the two chambers. The lower ends of the drying passages are respectively connected to a plurality of cross-flow downward feeding chambers formed by chevron-shaped partition walls arranged in a plurality of rows along the horizontal direction directly below the drying passage, the hot air chamber, and the exhaust chamber. When the lower end of the cross-flow dispensing chamber is seen into the take-out chamber, the hot air chamber, the exhaust chamber, the cross-flow dispensing chamber, and the left and right sides of the take-out chamber arranged in the dryer main body are located along the horizontal direction. The dust exhaust chamber, the hot air blower chamber, and the dust collection chamber are arranged symmetrically, and the dust exhaust chamber and the hot air blower chamber are connected to each other, and the hot air blower chamber and the dust collection chamber are connected to each other, and the hot air blower chamber is connected to the ventilation passage. , a grain dryer characterized in that it is connected to a dust collection chamber through a take-out chamber and a ventilation passage.