JPH0510987U - Grain Suction Prevention Device in Grain Dryer - Google Patents

Abstract

(57) [Summary] [Purpose] By closing the bottom opening of the exhaust chamber with a perforated plate without creating a gap in the surroundings, near the bottom opening of the exhaust chamber during grain circulation drying work. It is possible to prevent a part of the grain accumulated in the exhaust ventilation chamber from being sucked into the exhaust ventilation chamber due to the negative pressure in the exhaust ventilation chamber to be sucked and accumulated or discharged to the outside of the machine. [Structure] A bottom opening portion 13 is provided at the bottom of a plurality of air exhaust chambers 9, one end of which communicates with the dust exhaust air chamber 5. At the bottom opening 13,
The front and rear mounting pieces 7 and 17 and the left and right mounting pieces 18 which are mounted in close contact with the mounting edges 14 and 15 and the left and right inner walls 4 and 6 projecting downward at the open end along the longitudinal direction of the front and rear, respectively. , 18 are provided on each of the four opposite sides of the perforated plate 1
6 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, during the grain circulation drying operation, after a part of the grain filled near the bottom opening part of the air exhaust chamber is sucked into the air exhaust chamber from the bottom opening part by the negative pressure effect in the air exhaust chamber. The present invention relates to a grain sucking-out prevention device for a grain dryer, which can prevent the dust from being sucked and accumulated in the dust blast chamber or discharged outside the unit.

[0002]

[Prior Art]

 A hot air blower chamber and a dust exhaust air chamber are provided facing each other along the horizontal direction on the left and right sides of the lower half of the horizontally long rectangular tube-shaped dryer main body, and the hot air blower chamber and the dust exhaust air chamber are connected to each other. In between, the hot air chamber with open bottom that communicates with the hot air blowing chamber and the open air chamber with open bottom that communicates with the dust exhaust chamber are dried between both chambers in the direction orthogonal to the horizontal direction. A grain dryer capable of circulating and drying grains by alternately arranging so as to form a passage is known from, for example, Japanese Patent Publication No. 61-55037.

[0003]

[Problems to be solved by the device]

 By the way, in this type of grain dryer of the past, the bottoms of the hot air chamber and the exhaust air chamber were formed to be open so that part of dust and the like mixed in the grain flowing down along the drying passage could be removed from the hot air chamber and the exhaust air chamber. Even if the dust and the like enter the inside from the ventilation surface of the air chamber, the dust and the like are not accumulated on the bottom of the hot air chamber and the exhaust air chamber. The flaming combustion prevents a fire from occurring in the grain dryer. However, in large-sized grain dryers that dry large-capacity grains, the negative pressure in the exhaust chamber increases due to the use of a large suction exhaust fan, and as a result, suction from the bottom opening into the exhaust chamber. The pressure also increased significantly, and some of the grains that had accumulated near the bottom opening were sucked into the exhaust chamber from the bottom opening due to the suction force of the suction pressure and then accumulated in the dust chamber. There was a problem that it was discharged to the outside of the aircraft.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to place front and rear mounting pieces and left and right mounting pieces on four sides of front, rear, left and right. The bottom plate of the exhaust chamber is securely closed with a perforated plate without gaps, so that part of the grain accumulated near the bottom chamber of the exhaust chamber can be opened by the suction pressure. After being sucked into the exhaust air chamber, it is prevented from being sucked and accumulated in the dust exhaust air chamber or discharged to the outside of the machine, and the dust and the like that enter the exhaust air chamber from the ventilation surface are opened at the bottom. The air that is sucked and distributed through the perforated plate that is placed so as to block the part smoothly disperses the dust to the outside of the machine through the dust-exhaust air chamber, or partially leaks to the lower part through the perforated plate. To Provide Grain Suction Prevention Device in Grain Dryer It is what

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the grain sucking-out prevention device in the grain dryer of the present invention has a hot air blower chamber and a dust blower chamber having inner walls inclined inward and downward with respect to each other in the drying section of the dryer body. Between the hot-air blowing chamber and the dust-exhausting air chamber, which are provided to face each other, a hot-air chamber having a plurality of open bottoms, one end of which opens into the hot-air blowing chamber, and an open-bottom of which one end communicates with the dust-exhausting air chamber A plurality of air exhaust chambers were alternately installed so that a drying passage was formed between both chambers, and the open end of the air exhaust chamber was projecting downward at the open end along the longitudinal direction. The perforated plate is provided with a pair of mounting edges, and downward facing front and rear mounting pieces and left and right mounting pieces that are mounted in close contact with the left and right inner walls, respectively, on the four opposite sides.

[0006]

[Action]

 At the time of starting the grain drying operation, the exhaust air chamber is set to a negative pressure state, and at the same time, dry hot air is generated in the hot air blowing chamber. Then, the dry hot air enters a plurality of hot air chambers by a negative pressure suction action in the dust air chamber, then exits the hot air chamber, crosses the drying passage, enters the air exhaust chamber, and is finally sucked into the dust air chamber. And it is exhausted outside the machine. Therefore, the grains that are successively flowed down in the drying passage under the filled state are dried by being exposed to the hot dry air flowing in the drying passage. By the way, during the drying operation as described above, at the bottom open parts of the plurality of exhaust chambers, the mounting edges protruding downward along the longitudinal direction of the open ends and the left and right inner walls are in close contact with each other. Since a perforated plate with four front and rear mounting pieces and left and right mounting pieces to be mounted underneath is installed to close the bottom opening without any gap, it is deposited near the bottom opening. It is possible to completely prevent a portion of the grain that has been sucked into the ventilation chamber by suction. Therefore, the conventional drawback that a part of the grain accumulated near the open bottom portion is sucked by the suction action to be accumulated in the dust blast chamber or discharged outside the machine is solved. Also, small dust that has entered the exhaust air chamber is sucked and exhausted into the exhaust air chamber through the exhaust chamber due to the negative pressure in the exhaust air chamber, or part of it leaks out through the perforated plate. Be done.

[0007]

【Example】

 Examples will be described with reference to the drawings. 1 to 5, reference numeral 1 denotes a dryer main body having a horizontally long rectangular tube shape which is long in the front-rear direction, and is dried in the dryer main body 1 by drying hot air which circulates and circulates and flows grains. A drying unit 2 is provided for this purpose. The drying unit 2 includes a hot air blowing chamber 3 formed by sloping an inner wall 4 inward and downward, and a dust exhaust chamber 5 formed by sloping the inner wall 6 inward and downward on both left and right sides of the dryer main body 1. Between the hot air blowing chamber 3 and the dust blowing air chamber 5, one end is provided between the hot air blowing chamber 3 and the dust blowing air chamber 5, and one end communicates with the hot air blowing chamber 3 through the ventilation window 8, and one end is provided. A structure in which a plurality of air exhaust chambers 9 communicating with the dust exhaust air chamber 5 through the air exhaust window 10 are alternately installed in the left-right direction so that a drying passage 11 is formed between the two chambers 7, 9. Is. The bottoms of the hot air chamber 7 and the exhaust chamber 9 are open 12 and 13. The bottom opening portion 13 of the air exhaust chamber 9 has a pair of mounting edges 14 and 15 projecting downward at the open end along the front-rear longitudinal direction, and a downward shape that closely contacts the left and right inner walls 4 and 6, respectively. The front and rear mounting pieces 17, 17 and the left and right mounting pieces 18, 18 are provided on the perforated plate 16 on the opposite four sides, respectively, and the mounting edges 14, 15 and the front and rear mounting pieces 17, 17 are arranged, and the inner wall 4, 6 and the left and right mounting pieces 18, 18 are mounted via spots or other mounting means, and the bottom opening portion 13 is closed so that no gap is formed around it. The hot air chamber 7 and the air exhaust chamber 9 are formed on the air-flowing surface as opposed surfaces thereof.

[0008]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. It is a grain dryer that can increase the drying capacity by making the area of the drying passage as wide as possible and supplying a large amount of hot air into the hot air chamber with little air loss even if the hot air blowing rate is the same. However, at the bottom open part of the exhaust chamber, a pair of mounting edges projecting downward along the longitudinal direction at the open end, and downward facing to be attached to the left and right inner walls in close contact with each other. Since a perforated plate with front and rear mounting pieces and left and right mounting pieces on each side is arranged, the bottom open part is completely shielded by the perforated plate without creating a gap in the periphery, and during the grain drying operation. Part of the grain accumulated near the bottom opening is sucked into the exhaust chamber from the bottom opening due to the negative pressure in the ventilation chamber, and is then accumulated in the dust chamber or discharged to the outside of the machine. To prevent this, suction a small amount of dust that has entered the ventilation chamber. To be deposited on the exhaust air chamber allowed Moshita from dust or perforated plate can be prevented Not to natural.

[Brief description of drawings]

FIG. 1 is a front view of a grain dryer with a part cut away.

FIG. 2 is a side view of the grain dryer with a part cut away.

FIG. 3 is a perspective view of a perforated plate.

FIG. 4 is an enlarged cross-sectional view in which a mounting portion between the left and right mounting pieces and the inner wall is partially cut away.

FIG. 5 is an enlarged side view of an exhaust chamber with a part cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grain dryer 2 Drying part 3 Hot air blower chamber 4 Inner wall 5 Dust ventilation chamber 6 Inner wall 7 Hot air chamber 9 Exhaust chamber 11 Drying passage 13 Bottom opening part 14 and 15 Mounting edge 16 Perforated plate 17 and 17 Front and rear mounting pieces 18, 18 Left and right mounting pieces

Claims (1)

[Claims for utility model registration] [Claim 1] A hot air blower chamber and an exhaust air blower chamber having inner walls inclined inward and downward are provided in the drying section of the dryer main body so as to face each other. Between the chamber and the dust-exhaust chamber, there are a plurality of open-bottom hot air chambers, one end of which communicates with the hot-air blower chamber, and a plurality of open-bottom exhaust chambers whose one end communicates with the dust-exhaust chamber. The air ducts are alternately installed so that a drying passage is formed between the two chambers, and a pair of mounting edges projecting downward along the front-rear longitudinal direction at the open end of the bottom of the air exhaust chamber and the left and right A grain sucking-out prevention device for a grain dryer, characterized in that a perforated plate having downward facing front and rear mounting pieces and left and right mounting pieces mounted on the inner wall in close contact with each other is provided on each of four opposite sides.