JPH0648311Y2 - Grain dryer - Google Patents

Description

[Detailed Description of the Invention] "Industrial application field" The present invention is to apply the dry hot air to the grains that flow down evenly along the drying passages in parallel and to pour the grains into the drying passages in the left-right direction. The grain flow is divided into two parts, and after passing through the drying passage, the flow is changed in the front-back direction to improve the fluidity of the grain and to quickly dry the grain without causing uneven drying or cracking of the grain. It relates to a grain dryer that can be dried.

“Conventional technology” Conventionally, in a drying passage, the flow of grains separated in the front-back direction is passed through the drying passage, and then the flow is changed to the left-right direction. A grain dryer capable of uniformly finishing and drying even high-moisture grains with good quality is described in, for example, Japanese Patent Publication No. 61-55037 before this application, and the content thereof will be described with reference to FIG. That is, the hot air blower chambers 2 and the dust exhaust air chambers 3 are symmetrically provided on the left and right sides of the lower half of the dryer main body 1 in the shape of a horizontally long rectangular cylinder that is long in the front-rear direction, and the hot air blower chambers 2 and the dust exhaust air chambers are provided. Between 3 and the direction orthogonal to the horizontal direction,
A plurality of hot air chambers 4 communicating with the hot air blower chamber 2 and a plurality of air exhaust chambers 5 communicating with the dust exhaust air chamber 3 are provided between the chambers 4 and 5, and a narrow drying passage 6 is provided therebetween.
Are alternately arranged so that the lower ends of the plurality of drying passages 6 are formed by mountain-shaped partition walls 7 arranged immediately below the drying passage 6, the hot air chamber 4 and the exhaust air chamber 5 in a plurality of rows in the lateral direction. A plurality of intersecting delivery chambers 8 formed are connected to each of the plurality of intersecting delivery chambers 8 ... 2. Dust exhaust chamber 3 and cross-flowing out chamber 8
It is constructed by looking into the take-out room 10 surrounded by.

"Problems to be solved by the invention" By the way, in the conventional grain dryer of this type, the grain vertically flowing down along the drying passage formed between the hot air chamber and the exhaust air chamber is First, after the cross-flow drying is performed in which the hot dry hot air flowing across the drying passage is dried, the grain is deflected in the orthogonal direction when it falls into the lower cross-flow feeding chamber. Stir-mixing is effectively performed so that even grains having different initial moisture values can be quickly dried to the desired finishing moisture value by a plurality of circulation flow actions.

However, according to the above-mentioned drying means, since the grain flowing vertically down the drying passage and the crossing-down feeding chamber is only subjected to the cross-flow drying only once in the flow-down process, it is impossible to facilitate the drying easily. Due to the drying, the grains on the blast side of the dry hot air are dried faster than the grains on the blast side of the dry hot air, which causes uneven drying and cracking of the barrel, which prevents uniform drying. It was

The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is to allow grains to flow down not only in a drying passage but also in a crossflow feeding chamber sequentially and evenly. If hot dry air is distributed in the same direction as the grain flow direction so that it can flow accurately in parallel, and a uniform amount of dry hot air is applied to all the flow grain, uniform drying can be performed rapidly. An object of the present invention is to provide a grain dryer capable of obtaining dry grains of good quality by preventing uneven drying and cracking of the barrel at the same time as tightening.

[Means for Solving the Problems] In order to achieve the above object, the grain dryer according to the present invention has a plurality of spray windows opened at the lower end for spraying dry hot air downward in a drying section provided inside the dryer body. A row of hot air jet ducts and a plurality of rows of intermediate ventilation ducts that open at the lower end of the exhaust window that sucks and exhausts part of the dry hot air jetted downward from the jet window are staggered through the drying passages in the front-back direction. A plurality of rows of cross-down flow-out chambers formed by mountain-shaped perforated partition walls arranged in a plurality of rows along the lateral direction are arranged immediately below the intermediate ventilation duct along with a three-dimensional stack.

[Operation] Now, when the grain to be dried is supplied into the dryer main body, the grain is filled not only in the cross-down feeding chamber but also in all the drying passages. Therefore, the filled grains are sequentially discharged by the feeding action, and at the same time, the dry hot air is blown into the hot-air jetting ducts in a plurality of rows, and at the same time, the cross-flowing-down feeding chamber is brought to a negative pressure state. Then, due to the negative pressure action, the dry hot air is jetted downward in the drying passage along the grain flow direction from the jet window opening at the lower end of the dry jet duct, and is uniformly applied to the grain. Then, when a portion of the dry hot air that has flowed along the drying passage in the same direction as the grain flow direction flows near the intermediate ventilation duct, it is sucked from the exhaust window due to negative pressure and is exhausted from the dryer main body through the intermediate ventilation duct. Exhausted. Therefore, parallel flow drying is properly performed in the process in which grain is flowed down to the cross-flow feed-out chamber along the drying passage while being rectified by the action of the hot-air jet duct and the intermediate ventilation duct. Part of the air is exhausted through the intermediate ventilation duct, so that the dry hot air can be adjusted to a pressure necessary for accurately and uniformly flowing the cross-flow downflow chamber. When the grains enter the cross-flow delivery chamber through the drying passage, they are deflected in a direction orthogonal to the drying passage by a plurality of rows of mountain-shaped perforated partition walls arranged in the lateral direction, and at the same time, the drying passage is formed. The dry hot air that flows in parallel flows smoothly through the cross-flow down-feed chamber toward the take-out chamber, so that the grains that are effectively agitated and mixed are quickly dried by the circulating hot dry air.

Therefore, even grains with different initial moisture values can be dried quickly by the circulation and flow action of multiple times, and the grain can be dried uniformly without causing uneven drying or cracks in the barrel, and easily obtain good quality dried grains. be able to.

[Example] An example will be described with reference to the drawings.

In FIG. 1 and FIG. 2, 101 is a dryer main body having a horizontally long rectangular tube shape that is long in the front-rear direction, and the dryer main body
Inside the 101, a tempering tank 102, a drying section 103, and a take-out chamber 104 are sequentially and three-dimensionally stacked from the upper stage toward the lower stage.
Then, in the drying unit 103, a plurality of rows of hot-air jet ducts 105 that open at the lower end of the jet window 106 for jetting dry hot air downward, and a part of the dry hot air jetted downward from the jet window 106 to the outside of the machine. A plurality of rows of intermediate ventilation ducts 107 having an exhaust window 108 for suctioning and exhausting opened at the lower end are three-dimensionally stacked along the front-rear direction so as to form a staggered pattern via a drying passage 109.

Immediately below the intermediate ventilation duct 107, a plurality of cross-flow downflow chambers 110 formed by mountain-shaped perforated partition walls 111 arranged in a plurality of rows along the lateral direction are arranged and the lower end of the drying passage 109 is arranged. It is connected to the cross-flowing delivery chamber 110. Therefore, the hot air jet duct 105, the intermediate ventilation duct 107, and the drying passage 109 are configured as described above.
Can be formed with a short length, and at the same time increase the number,
Even if the grain filling pressure in the tempering tank 102 is high,
It is permissible to increase the durability of the hot air ejection duct 105 and the intermediate ventilation duct 107 without bending, or the ejection window 106.
Since a portion of the dry hot air blown downward so as to be more parallel to the grain flow direction is sucked and exhausted through the exhaust window 108, it is possible to maintain a pressure suitable for flowing in the cross flow feed-out chamber 110 and also a hot air jet duct. The staggered arrangement of the 105 and the intermediate ventilation ducts 107 allows the grain to be rectified accurately.

Moreover, since a plurality of rows of cross-flow downfeeding chambers 110 are formed immediately below the intermediate ventilation duct 107 and the drying passage 109 by a plurality of rows of mountain-shaped porous partition walls 111, the grain flow divided in the front-rear direction in the drying passage 109 is formed. After passing through the drying passage 109, this time change the flow to the left and right to make it cross down,
It is possible to efficiently stir and mix grains having different initial water contents and, at the same time, improve the fluidity of the grains so that the grains can be dried uniformly without unevenness in drying and unevenness in flowing.

Further, since the grain that has been deflected downwards through the drying passage 109 is always filled in the cross-down feeding chamber 110, the grain is passed from the hot air blowing duct 105 through the drying passage 109 to the cross-down feeding chamber.
The dry hot air flowing through the inside of 110 is evenly exposed and the grain is uniformly dried without being damaged.

A feeding port 112 is opened in each of the troughs of the mountain-shaped porous partition wall 111 along the laterally long direction, and a feeding roll 113 which is intermittently rotated is rotatably mounted at the position of the feeding port 112.

Around the lower part of the cross-flowing feed-out chamber 110, a take-out chamber 104 for accommodating the exhausted hot air and dried grains that have been used for drying is formed by a pair of left and right flowable plates 114 inclined toward the center. , A discharge gutter 1 installed horizontally at the lowest position in the unloading room 104
A transport screw 117 for transporting the dried grain to the lower part of the elevator 116 attached to one side of the dryer body 101 is rotatably accommodated in the storage shaft 15.

Reference numeral 118 denotes an air exhaust device that is open-connected to one side of the take-out chamber 104, and reference numeral 119 denotes the hot air blowing duct 1 arranged in a plurality of rows.
A hot air generator for introducing dry hot air into the interior of the dryer by suction action of the air exhaust device 118, wherein the hot air generator 119 includes hot air blowout ducts 105 and ventilation windows in each row on one side of the dryer main body 101.
A housing 121 having an internal cavity shape mounted under the condition of communicating through 120, and an intake window 12 opened on the intake side of the housing 121.
2 and a burner device 123 installed in the housing 121 in the vicinity.

In addition, the upper part of the elevator 116 is connected to the supply side of the carry-in gutter 124 which is horizontally provided along the lateral direction at the top of the dryer main body 101.

"Effects of the Invention" Since the present invention is configured as described above, it has the following effects.

Permitting that the grains stored in the tempering tank can be flowed down uniformly along the drying passage while rectifying them, or dry hot air should be blown to all of the grains that flow down evenly in parallel with the grain flow direction. Since it is distributed and bathed, it can be dried rapidly while preventing damage to the grain as much as possible, and it is possible to eliminate unevenness in runoff and unevenness in drying and easily obtain good quality dry grains without cracks in the barrel. Since a part of the dry hot air jetted downward from the wind window into the drying passage is exhausted from the exhaust window by the negative pressure action, it is easy to obtain the dry hot air with a pressure suitable for flowing in the cross-downward feeding chamber from the drying passage. Of course, the grain flow divided into the front and rear directions in the drying passage can be mixed by agitating and mixing after passing through the drying passage in a cross direction where the flow changes in the left and right directions. Drying hot air flowing through the falling feed chamber can be uniformly dried without generating uneven drying.

[Brief description of drawings]

The drawing shows an embodiment of a grain dryer,
The figure shows a vertical front view, and FIG. 2 shows a side view in which a main part is longitudinally cut.
The figure is a vertical sectional front view of a conventional example. 101: dryer main body, 103: drying section, 105: hot air blowout duct, 106: blowout window, 107: intermediate ventilation duct, 108
...... Exhaust window, 109 …… Drying passage, 110 …… Cross flow down feeding room, 111 …… Yamagata perforated partition wall

Claims (1)

[Scope of utility model registration request] 1. A plurality of rows of hot-air blowing ducts, which open at the lower end of a blowing window for blowing dry hot air downward, and a part of the dry hot air blown downward from the blowing window are provided in a drying section provided inside the dryer main body. A plurality of rows of intermediate ventilation ducts, each of which has an exhaust window for suctioning and exhausting opened at the lower end, are three-dimensionally stacked along the front-rear direction so as to form a staggered pattern through the drying passages. A grain dryer having a plurality of rows of cross-flowing feed chambers formed by mountain-shaped porous partition walls arranged along a plurality of rows.