JPH089595Y2 - Grain dryer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides a method for drying even a large volume of grain efficiently and evenly by drying hot air that flows in parallel in the same direction as the grain flow. Preventing the front and rear walls of the machine body from bulging and being damaged by the pressure of the filled grains, and at the same time, effectively diffuses the hot air blown downward from the hot air jet ducts in multiple rows to further improve the thermal efficiency. The present invention relates to a grain dryer for promoting the drying of grains.

[Prior Art] The applicant previously provided a hot air blower chamber and a dust exhaust air chamber at opposite positions on the left and right sides in a dryer main body that is long in the front-rear direction, and provided between the hot air blower chamber and the dust exhaust air chamber. , From the top to the bottom,
A plurality of rows of hot air jet ducts, one end of which is connected so as to be orthogonal to the hot air blower chamber, and whose lower end has a jet window opened, and a plurality of rows of hot air guide ducts which are open at the lower end and are arranged in parallel with the hot air jet duct, A plurality of rows of cross-down flow-out feeding chambers formed by mountain-shaped porous partition walls arranged in a plurality of rows along the lateral direction and a take-out chamber connected to the dust exhaust chamber are sequentially arranged three-dimensionally, While the dry hot air flowing in the same direction as the flow is divided in the front-rear direction by the hot-air ejection ducts in multiple rows, the process of falling vertically along the drying passage and the cross-downward feeding chamber is divided in the left-right direction. Japanese Patent Application No. 63-249417 has been filed for a grain dryer capable of effectively performing three-stage drying by uniformly bathing in the vertical flow process and the flow process in the take-out chamber.

[Problems to be solved by the invention] By the way, when a grain dryer developed earlier is used to dry a large amount of grain, the grain is dried in order to increase the grain storage capacity in the drying unit. The left and right length of the machine body was designed to be larger than the front and rear length.

Therefore, in this type of large-sized grain dryer, the front and rear walls of the dryer body plastically formed by the thin plate receive more accumulated grain pressure because the right and left lengths of the dryer body inevitably become large. Perhaps there is a risk that it will swell outwards and be damaged due to insufficient strength, but the hot air blown downward from multiple rows of hot air blowing ducts will simply flow in parallel along the grain flow direction without being diffused. Since only the drying work is carried out in, heat efficiency is poor and there is a problem that the grain cannot be dried more efficiently.

The present invention has been made in view of such problems of the conventional technology, and its purpose is to:
Even if the left and right length of the dryer main body is increased to increase the grain storage capacity, the front and rear wall sides of the dryer main body may be bulged outwardly and damaged due to accumulated grain pressure. In addition to preventing it in advance, the air blown from the hot air jet ducts in multiple rows to flow in parallel with the flow direction of the grain can be diffused in a wide range and flow downward, promoting the improvement of thermal efficiency. It is to provide a grain dryer that can improve the drying efficiency of grains.

[Means for Solving the Problems] In order to achieve the above object, a grain dryer according to the present invention is provided with a hot air blower chamber and a dust blower chamber at opposite positions on both left and right sides in a dryer main body which is long in the front-rear direction. Between the hot air blowing chamber and the dust blowing chamber, one end is orthogonal to the hot air blowing chamber from the upper stage to the lower stage, and a jet window is opened at the lower end and is vertically installed through a drying passage. Formed by a plurality of rows of hot air jet ducts, a plurality of rows of hot air guide ducts whose lower ends are opened and are arranged in parallel with the hot air jet ducts, and a mountain-shaped perforated partition wall arranged in a plurality of rows along the lateral direction. A plurality of rows of cross-down flow-out chambers and a take-out chamber connected to the dust-exhaust air chamber are sequentially arranged three-dimensionally, and an inverted U-shaped reinforcing body is provided between the hot air jet duct and the hot air guide duct. Insert the support shaft, which is hung vertically, over the front and rear walls of the dryer body. through,
Both ends thereof are tightened with a tightening tool.

[Operation] When the grain to be dried is supplied into the dryer main body, the grain is filled not only in the cross-flow down-feeding chamber but also in all the drying passages. Therefore, the filled grains are sequentially discharged by the feeding action, and the dry hot air is blown into the hot-air jetting ducts in a plurality of rows, and at the same time, the cross-flow down feeding chamber and the take-out chamber are brought to a negative pressure state.

By the negative pressure, 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 hot air jet duct, and is uniformly applied to the grain. Then, the dry hot air that has flowed in parallel in the same direction as the grain flow direction along the drying passage is guided by the hot air duct to flow in the cross flow delivery chamber by the negative pressure action, and then is exhausted into the extraction chamber. Therefore, the first parallel-flow drying is appropriately performed in the process in which the grain is flowed down toward the cross-flow feed-out chamber along the drying passage while being rectified by the action of the hot-air jet duct and the hot-air guide duct. Then, when the grain falls into the cross-flowing feeding chamber through the drying passage, it is deflected in a direction orthogonal to the drying passage by a plurality of rows of mountain-shaped perforated partition walls arranged along the lateral direction and simultaneously dried. The dry hot air flowing in parallel in the passage smoothly flows toward the take-out chamber while the cross-flowing feeding chamber is smoothly flowing, so that the dry hot air flowing downward while being effectively agitated and mixed performs the second drying. In addition, the grains discharged by the feeding action into the take-out chamber are subjected to the third drying process by being exposed to the dry hot air that is sucked and distributed from the cross-flowing feed chamber through the take-out chamber and toward the dust ventilation chamber. A large amount of dust is separated and sorted by the exhaust hot air flowing from the take-out chamber to the exhaust air chamber through the exhaust passage toward the exhaust air chamber, and the dust is exhausted together with the exhaust hot air to the outside of the machine from the exhaust air.

By the way, even if the above-described drying work is performed by a large grain dryer containing a large amount of grain, an inverted U-shaped reinforcing body is hung vertically between the hot air jet duct and the hot air guide duct. The supporting shaft is inserted through the front and rear walls of the dryer main body, and both ends of the support shaft are clamped by the tightening tools. Even if it is made, it is possible to prevent the front and rear walls from bulging outward due to the accumulated grain pressure due to the reinforcing effect of the reinforcing body and the support shaft, or the dry hot air blown downward from the hot air blowing duct is blown out. The inverted U-shaped reinforcing member arranged in the direction orthogonal to the duct distributes it while distributing it to the left and right so that the grain can be contacted well.
It is possible to further enhance the thermal efficiency of the hot dry air and promote the drying.

[Examples] Examples will be described with reference to the drawings.

1 to 3, reference numeral 1 denotes a dryer main body having a horizontally long rectangular tube shape that is long in the front-rear direction. The hot-air blowing chamber 2 and the dust-exhausting air chamber 3 having a large length are symmetrically arranged. Then, the hot air blowing chamber 2 and the dust exhaust chamber 3
Between one end of the hot air blowing chamber 2 and a plurality of rows of hot air blowout ducts 4 having a blowout window 5 for blowing the dry hot air downward at the lower end and the dry hot air blown downward from the blowout window 5, A plurality of rows of hot air guide ducts 6 arranged in the lower stage and arranged along the lateral direction to guide and flow toward a plurality of rows of cross-down flow-out feeding chambers 8 and three-dimensionally stacked in the left-right direction in a zigzag manner through a drying passage 7. It has been set up. The hot air guide duct 6 is formed in a mountain shape having porous surfaces on both sides, and at the same time, the lower end is opened. The above-mentioned cross-down feeding chamber 8 is composed of mountain-shaped porous partition walls 9 arranged in a plurality of rows along the lateral direction, and the lower end of the drying passage 7 is connected to the cross-down feeding chamber 8. .

Therefore, with the above-described configuration, the number of hot-air jetting ducts 4 and hot-air guiding ducts 6 is increased, and the deposition pressure of the grain filled in the tempering tank 10 arranged above the hot-air guiding ducts 6 is increased. Even if the hot-air jet duct 4 and the hot-air guide duct 6 do not bend, their durability can be increased or the filling amount of the whole grain can be increased, and the flow direction of the grain from the jet window 5 is parallel to that of the grain. As a result, it is possible to accurately carry out the rectifying action of inducing and circulating the dry hot air jetted downward toward the cross-flow down-feeding chamber 8.

Moreover, since a plurality of rows of the cross-flowing-out delivery chambers 8 are formed immediately below the hot air guide duct 6 and the drying passage 7,
After the grain flow divided in the front-rear direction in the drying passage 7 has passed through the drying passage 7, this time the flow is changed to the left-right direction so that it cross-flows down, and grains with different initial moisture contents are efficiently stirred and mixed, and at the same time, the grains are mixed. Improve the liquidity of
The grain can be dried uniformly without unevenness in drying and unevenness in flowing. In addition, in the cross-flowing delivery chamber 8,
Since the grain that has been deflected downwards through the drying passage 7 is always filled, the grain is evenly exposed to the dry hot air flowing in the crossflow feeding chamber 8 through the drying passage 7 from the hot air jet duct 6 to damage the grain. It is dried uniformly without being processed.

A delivery port 11 is opened in each of the troughs of the chevron-shaped porous partition wall 9 along the lateral direction, and a delivery roll 12 which is intermittently rotated is rotatably mounted at the position of the delivery port 11.

Immediately below the cross-flow down-feeding chamber 8, a take-out chamber 13 for accommodating the exhausted hot air after drying and dried grains is formed by a pair of left and right main-flow grain boards 14 and 14 obliquely installed toward the center. In the discharge gutter 15 provided horizontally at the lowest position of the unloading chamber 13, a transport screw 17 for transporting the dry grain to the lower part of the elevator 16 attached to one side of the dryer body 1 is rotatably attached. It is stored.

In addition, at the bottom of one mainstream grain board 14, the base end side is carried out.
A dust passage is provided between the side plate 18 attached to the main plate 15 and the main plate 14.
19 are formed so that the dust-exhaust chamber 3 and the take-out chamber are formed.
Connect 13 and.

Therefore, according to the above-described configuration, the grain is first dried in the process of flowing through the drying passage 7, and then the second drying is performed in the cross-flow delivery chamber 8 and further in the extraction chamber 13. At the same time that the third drying is performed, the waste hot air that has been used for drying the grains is used to perform a dust sorting operation.

On the front side of the hot air blowing chamber 2 and on the rear side of the dust exhaust chamber 3, a burner device 20 containing a burner 21 inside and a suction and exhaust device 22 rotatably containing a suction and exhaust device 23 are mounted respectively. The burner device 20 and the hot air blowing chamber 2 are connected to each other, and the suction and exhaust device 22 and the dust blowing chamber 3 are connected to each other.

Between the hot air jet duct 4 and the hot air guide duct 6, a plurality of support shafts 24 each having an inverted U-shaped reinforcing body 25 suspended in a suspended manner are provided at intervals to form front and rear walls 1a, 1b of the dryer main body 1. Both ends of the support shaft 24 are tightened by a tightening tool 26 so as to clamp the inverted U-shaped reinforcing body 25.

Therefore, even if the right and left lengths of the front and rear wall plates 1a and 1b of the dryer main body 1 are increased to increase the amount of stored grains, the front and rear wall plates 1a and 1b swell outward due to the accumulated grain pressure. It is possible to prevent damage before it happens, and at the same time, dry hot air blown downward from the jet window 5 is diffused in the left-right direction by the inverted U-shaped reinforcing body 25, so that the thermal efficiency can be improved.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Permitting that the grains stored in the dryer main body can be uniformly flowed down while rectifying along the drying passage, or hot dry air is distributed so that all the grains that flow down are parallel to the grain flow direction. At the very least, the first drying in the process of flowing down in the drying passage while preventing damage to the grain as much as possible,
Next, the grain can be dried quickly by performing the second drying in the process of flowing down in the cross-flowing delivery chamber and the third drying in the process of further flowing down in the delivery chamber. It is possible to easily obtain good quality dry grain that does not cause unevenness in drying and does not cause barrel cracks.
After the grain flow divided in the front and rear direction in the drying passage is passed through the drying passage, the grains are allowed to flow down in an intersecting manner in which the flow is changed in the left and right directions and mixed by stirring to uniformly dry all the grains.

In addition, since there is no exhaust duct in the drying section, it is possible to increase the filling quality of the grain even more, or the exhaust hot air and dust are all taken out in the take-out chamber. The height of the body can be made lower,
When the hot dry air is circulated in the same direction as the flow direction of the grain, it can be dried evenly, and the width of the dryer main body is made large to increase the grain storage capacity. Even if there is, the front and rear wall sides of the dryer main body will bulge outward due to the pressure of accumulated grain due to the reinforcing effect of the support shaft and the inverted U-shaped reinforcing body, and it will be prevented from being damaged before drying operation for a long time. In addition to being able to continue, the dry hot air jetted downward from the jet window is diffused in the left and right directions by the reinforcing body to improve the thermal efficiency and further accelerate the drying of the grain.

[Brief description of drawings]

The drawings show a grain dryer. FIG. 1 is a vertical sectional front view, FIG. 2 is a side view in which a main portion is longitudinally cut, and FIG. 3 is an enlarged vertical sectional front view of the main portion. 1 ... Dryer body, 1a, 1b ... Front and rear walls, 2 ... Hot air blowing chamber, 3 ... Dust exhaust chamber, 4 ... Hot air jet duct, 5 ... Jet window, 6 ... Hot air guide duct, 7 ... drying passage, 8 ...
Cross-flowing feed chamber, 13 …… take-out chamber, 24 …… support shaft, 25
... Inverted U-shaped reinforcement

Claims (1)

[Scope of utility model registration request] 1. A hot-air blowing chamber and a dust-exhausting air chamber are provided at opposite positions on both left and right sides in a dryer main body which is long in the front-rear direction, and between the hot-air blowing chamber and the dust-exhausting air chamber, a lower stage than an upper stage. , The hot air blowing chamber is connected at one end perpendicular to the hot air blowing chamber, the lower end is opened with a blowing window, and the hot air blowing ducts are arranged in multiple rows that are vertically installed through the drying passage. A plurality of rows of hot air induction ducts installed, 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, and an extraction chamber connected to the dust exhaust chamber In addition to being sequentially arranged in a three-dimensional manner, a supporting shaft having an inverted U-shaped reinforcing body suspended downwardly is inserted between the hot air jet duct and the hot air guide duct across the front and rear walls of the dryer main body. , A grain dryer whose both ends are clamped with a clamp.