JPS6139703Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a grain drying device that circulates grains and dries them by sending drying air. This invention relates to improvements to a circulation type grain drying device in which a screw conveyor is installed horizontally at the top of the machine, and grain outlets are formed at the front and back of the conveyor in order to uniformly feed the grains. It is something.

In the grain drying device of the above-mentioned form, the circulation operation of the grains loaded in the grain tank, especially in the corners of the grain tank, is caused by the straw pieces mixed in the grains. This leads to uneven circulation, which causes uneven drying.

The present invention was developed to solve this problem, and even if straw pieces are mixed in with the grains being dried, this will cause uneven circulation of the grains in the corners of the grain tank. The purpose is to provide a new means to prevent this from happening.

Therefore, the present invention was completed based on knowledge obtained through various studies and experiments in order to solve the above-mentioned problems. In other words, if the straw in the grain that obstructs the circulation of the grain is scattered and wrapped in the grain, it will flow together with the grain and the grain will be damaged. This does not hinder the flow of grains, but when they come into contact with the inner surface of the wall of the grain tank, the flow slows down and can prevent the flow of grains, and the straw pieces collect in a certain amount. It was discovered that when the straw became a mass of straw, it became stuck when it came into contact with the machine wall, making the flow of grain even more difficult. The straw pieces mixed in with the grains are scattered throughout the grains when they are first loaded into the grain tank, but the drying process is carried out by circulating the grains. While the grains are being fed into the grain tank 1 from the outlets 51 and 52 of the screw conveyor 5 which is horizontally supported on the upper part of the grain tank 1 as shown in FIG. By moving the surface of the pile of grains deposited in the grain tank 1 in a downward-sloping manner, they are gradually collected at the foot of the pile of grains, and a lump consisting only of pieces of straw is formed. Moreover, the hem of the pile of grains is formed at the outflow port 51,
Even when an inclined guide plate is provided below the grain tank 52 to increase the number of piles of grains to be piled up, since it is located on the inner side of the machine wall of the grain tank, it is possible to increase the number of grain piles. The pieces of straw scattered inside the tank began to collect near the inner surface of the machine wall, and in particular, the four corners W of grain tank 1 were the lowest due to poor grain flow. four corners W
The straw pieces S... will be concentrated in the largest amount in..., and the straw pieces S... concentrated here will clump together and come into contact with the inner surface of the machine wall. It turned out that it was starting to obstruct the flow. From this, when the grains are returned to the grain tank 1 from the outlets 51 and 52 of the screw conveyor 5 and deposited, the grains are deposited as shown by the double line arrow in FIG. Corner W of grain tank 1
The grains are dropped and released into the grain tank 1 so that the corner W becomes the top of the pile of grains, and from there, as shown by the thin arrow in FIG. When the grains collapse towards the grain tank and the hem Z... is located at the center of grain tank 1,
The straw pieces S scattered among the grains gather in the central part of the grain tank 1 surrounded by the hem Z of the pile of grains deposited at the four corners W, respectively, and the straw pieces S are scattered inside the grains. This is based on the fact that the grains become swallowed and circulate together with the grains, eliminating the problem of obstructing the circulation of the grains.

For this reason, in the present invention, as a means for achieving the above-mentioned object, the starting end side is attached to the upper part of the grain tank which is formed into a substantially square box shape and is mounted on the body of the grain drying device. A screw conveyor that communicates with the top of the grain lifting machine installed in parallel with the grain tank is installed horizontally so as to cross the left and right intermediate parts of the grain tank in a plane, and Grain outflow ports are provided on the terminal end, and the grains flowing out from the outflow ports are distributed to the left and right to areas located below the above-mentioned outflow ports immediately inside the machine walls at the front and rear of the grain tank. A chevron-shaped guide body is disposed when viewed from the front and rear directions, and the grains supporting the left and right slopes of the guide body are released toward each corner of the grain tank while being brought closer to the inner surface of each of the front and rear machine walls. The present invention proposes a circulating grain drying device characterized by being formed into a shape.

Next, an example of implementation will be described in detail with reference to the drawings.

FIG. 1 is a partially cutaway side view of a grain drying apparatus A embodying the present invention. In the figure, a denotes a machine body;
is the grain bin installed on the top of the machine body a, and 5 is the grain bin 1
A screw conveyor is installed on the top of the conveyor, and 8, 8 indicates an angle-shaped inductor.

The grain tank 1 includes machine walls 2, 2 at the front and rear of the machine body a, and an air-permeable bulkhead 4 such as a net, which is stretched in a double wall shape on the inside of each of the left and right side walls 3 of the machine body a. It is formed into a roughly square box shape, and the bottom of the box is equipped with a discharge port that is controlled to open and close by a drum shutter (or rotary valve), etc., and there is also a ventilated partition at the axial center of the inner cavity. This is a conventionally known type in which an air guide path consisting of the following is provided.

The screw conveyor 5 is located above the grain tank 1,
As shown by the chain line in Fig. 5, the machine is horizontally mounted on the machine body a, arranged so as to cross the left and right intermediate parts of the machine body a when viewed from the plane, and its starting end in the transport direction. On the side 5a is a grain lifting machine 6 installed in parallel with the machine body a.
It is communicated via a switching shutter 61 with a discharge cylinder section 60 provided at the top of a bucket elevator. Further, at the bottom of the conveyance gutter 50 that accommodates the screw, there are outlet ports 5 at a portion closer to the starting end side and a portion closer to the terminal end side in the aforementioned conveyance direction.
1 and 52 are provided, and the outlet ports 51 and 52 are provided with shutters 53 and 54 that can be freely opened and closed.

Note that the outlet 5 provided on the terminal end side 5b in the conveyance direction
2, as shown by the chain line in FIG. 2, a take-out gutter 7 is provided on the rear wall side of the machine body a, so that grains can be taken out from the rear side of the machine body a through the take-out gutter 7. The shutter 54 is formed to be long in the conveying direction, and by sliding the shutter 54 along the conveying direction and switching between the position shown by the chain line and the position shown by the solid line in FIG. The grains flow into the take-out gutter 7 and are removed from the machine body a.
The grain can be switched between a state where it is taken out to the rear side of the grain tank and a state where it flows out into the tank 1.

Numerals 8 and 8 discharge the grains discharged from the front and rear outflow ports 51, 52 of the screw conveyor 5 to respective positions of the four corners W of the inner cavity of the grain tank 1, and deposit them there. As shown in Fig. 3, the left and right inclined portions 8 are inclined downwardly from the center to the left and right.
0.80, it is formed into a chevron shape when viewed from the front, and as shown in FIG. 3 and FIG. Each outlet 51, 52 of the screw conveyor 5
They are arranged so as to protrude like an eaves from the front and rear machine walls 2, 2 of the grain tank 1 toward the front and rear central parts of the grain tank 1, respectively, at the lower parts of the machine walls 2, 2. Attach the mounting plate parts 81, 81 provided on the side edges with the fixing bolts 8.
2... is attached to each inner surface of the machine walls 2, 2, so that it can be detachably attached to the machine body a. The left and right inclined portions 80, 80 of these derivatives 8, 8 are the edges of the sides that protrude toward the front and rear center portions of the grain tank 1, as shown in FIGS. 3 and 4, respectively. is formed so as to gradually approach the inner surfaces of the front and rear machine walls 2, 2 of the grain tank 1 as it slopes downward, and a rising wall 83 rising upward is provided at the edge thereof, As a result, when the grains flowing out from the outlet ports 51 and 52 of the screw conveyor 5 are supported on the upper surface, the grains are moved toward the inner surfaces of the front and rear machine walls 2 and 2 while descending to the left and right. An edge 80 on the downward slope side of the slope part 80
A is used as a discharge port, and grains are discharged downward toward the front and rear left and right corners W of the inner cavity of the grain tank 1.

In the illustrated embodiment, 90 is a hot air generating device provided at the lower part of the front of the machine wall 2 on the front side of the aircraft body a, and 91 is a hot air generating device 91 that generates hot air and sends it to the grain tank through the aforementioned air guide path. 92 is a suction blower with a suction port connected to the duct 91; 93 is a suction blower installed at the bottom of grain tank 1; In order to carry out the grains discharged from the discharge port outside the machine,
A screw conveyor for carrying out is installed horizontally at the bottom of the inner cavity of the machine, and its terminal end in the conveying direction is connected and communicated with the lower part of the inside of the grain lifting machine 6 mentioned above. Also, 63
is a take-out gutter provided in the discharge cylinder section 60 at the top of the grain lifting machine 6 so as to be switched and communicated with the screw conveyor 5 by a switching shutter 61.

The embodiment device constructed in this manner operates as follows.

The grains flowing out from the outlets 51 and 52 of the screw conveyor 5 are distributed to the left and right by the chevron-shaped derivatives 8 disposed below the outlets 51 and 52, respectively, as indicated by the double-lined arrow in FIG. As shown, each corner W of the grain tank 1 is moved toward the front and rear machine walls 2, 2 along the machine walls 2, 2.
It flows toward... and is discharged from the edges 80a, 80a of the inclined parts 80, 80 on the downward slope side to each corner W.... As a result, the grain is returned to the grain tank 1 by the screw conveyor 5 and the grain is returned to the grain tank 1 by the screw conveyor 5.
The grains deposited in the grain tank 1 are piled up in four mountains with the tops at each corner W... of the grain tank 1 and the hem Z going toward the center of the grain tank 1 as shown by the broken line in Fig. 4. become. For this reason, the straw pieces S mixed in the grains are released into the grain tank 1 along with the grains, fall onto the surface of the pile of grains, and begin to fall down the surface. Then, as shown by the thin arrow in Fig. 4, the straw pieces S start to fall toward the center of the grain tank 1, which is away from the inner surface of the machine wall of the grain tank 1. The grains gather in the center and are swallowed by the circulating grains without contacting the wall of the grain tank 1 and flow.

As explained above, the circulating grain drying device according to the present invention has a starting end on the upper part of the grain tank 1 which is formed into a substantially square box shape and is mounted on the machine body a of the grain drying device A. A screw conveyor 5 communicating with the top of a grain lifting machine 6 installed in parallel with the grain tank 1 is horizontally mounted so as to cross the left and right intermediate portions of the grain tank 1 in the front and rear directions in a plane, and the conveyance direction of the screw conveyor 5 is Grain outflow ports 51 and 52 are provided at the starting end and the terminal end of the grain tank 1, respectively, and are located immediately inside the front and rear machine walls 2 and 2 of the grain tank 1 and located below the above-mentioned outflow ports 51 and 52.
A chevron-shaped derivative 8 is disposed when viewed from the front and rear direction to distribute and guide the grains flowing out from the outlet ports 51 and 52 to the left and right, respectively, and the grains supporting the left and right inclined portions 80 and 80 of the derivative 8 are disposed. Since the grain is formed in such a shape that it is discharged toward each corner W of the grain tank 1 while moving toward the inner surface of each of the front and rear machine walls 2, it flows out from the outlet ports 51 and 52 of the screw conveyor 5. The grains are deposited in the grain tank 1 in such a way that the four corners W in the grain tank 1 are highest and the central part is the lowest, and as a result, the surface of the pile of grains is When the pieces of straw S in the grains that have fallen on the surface of the heap of grains fall toward the hem Z and become collected there, the pieces of straw S are removed from the machine wall of the grain tank 1. As the grains are collected in the central part of the grain tank 1, the chunks of straw S begin to flow away from the machine wall, and the straw pieces S come into contact with the machine wall, resulting in the circulation of grains. This effectively solves the problem that prevents drying, and makes it possible to dry grains mixed with a large amount of straw without causing uneven drying.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a grain drying device in which the present invention can be carried out, Fig. 2 is a longitudinal sectional side view of the main parts of the same device, Fig. 3 is a perspective view of the main parts of the above device, and Fig. 4 is a FIG. 5 is an explanatory diagram of the operation of the conventional device. Explanation of drawing symbols, A... Grain drying device, S...
Straw piece, W... each corner, Z... hem, a... fuselage,
1... Grain tank, 2... Front and rear machine walls, 3... Side walls, 4
...Breathable bulkhead, 5...Screw conveyor,
5a... Starting end side, 5b... Terminating end side, 50... Conveying gutter, 51, 52... Outlet, 53, 54... Shutter, 6... Grain frying machine, 60... Discharging cylinder part, 61
...Switching shutter, 63... Take-out gutter, 7... Take-out gutter, 8... Inductor, 80... Inclined part, 80a...
... Edge, 81 ... Mounting plate part, 82 ... Fixing bolt, 83 ... Standing wall, 90 ... Hot air generation device, 9
1...Exhaust duct, 92...Suction blower, 93
...Screw conveyor for carrying out.

Claims (1)

[Scope of utility model registration request] At the top of the grain tank 1 formed into a substantially square box shape and mounted on the machine body a of the grain drying device A, there is a screw conveyor 5 whose starting end communicates with the top of the grain lifting machine 6 installed in parallel with the machine body a. is horizontally installed so as to cross the left and right intermediate portions of the grain tank 1 in a plane, and grain outlet ports 51 and 52 are provided at the starting end and the terminal end of the screw conveyor 5 in the conveying direction. The above-mentioned outlet 5 is provided immediately inside the machine walls 2 and 2 at the front and rear of the grain tank 1, respectively.
A chevron-shaped derivative 8 as viewed from the front and back direction is disposed at a portion located below the outlet ports 51 and 52 to distribute and guide the grains flowing out from the outlet ports 51 and 52, respectively, to the left and right. Inclined parts 80, 80
A circulating grain drying device characterized in that the grain supporting the grains is formed in a shape so as to be released toward each corner W of the grain tank 1 while being brought closer to the inner surface of each of the front and rear machine walls 2.