JP2001086849A - Grain unloading apparatus for rice cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject apparatus so designed that grains are collected by air blow so as to block damaged grains occurring due to operation for unloading grains from a grain tank and also minimize grains remaining on floor surface. SOLUTION: This grain unloading apparatus is so designed that a vent port (3) is provided throughout the ventilation floor surface (10) of a grain tank (1), divided ventilation chambers (2) are provided with a combined ventilation section (B) by making use of steel plate elasticity, a shutter (7) is ensured to open/close so as to enable the respective chambers to receive air through an annular air duct (5) communicating with a feed fan (18), a limited one of the chambers (2) subject to concentrated air blow is selected by a control switch (S) and air is blown thereinto, and grain are fed toward a withdrawal port (4) by the aid of pressureized air blow via the vent port (3).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain discharging apparatus for collecting grains of rice cabins for drying and storing grains by blowing air.

[0002]

2. Description of the Related Art With respect to a device that blows residual grains and collects and discharges the grains, a grain discharge port is provided at the center of a cylindrical rice cabin, the center of revolution is provided, and a discharge auger extending to the outer wall is rotated to a discharge port. Japanese Patent Application Laid-Open No. 7-330173 discloses a structure in which an air nozzle is juxtaposed to a sweep auger for guiding kernels to float and discharge remaining kernels on the floor. In addition, Japanese Patent Application Laid-Open No. Hei 9-1 / 1991 discloses a method in which a rectangular grain storage tank is divided so that air nozzles are protruded from the bottom of each chamber, and air is blown up and discharged together with grains into an opposed intake cylinder.
It is disclosed in JP 21670.

[0003]

The sweep auger is
A roller that slides close to the floor and sandwiches the grains or the rolling wheels provided on the slewing track presses the remaining grains so that damaged grains are likely to be generated, requiring high precision in the flatness of the floor. Was done. The latter air transfer requires equipment to supply high-pressure air to the air nozzle that raises the grains, and the piping of cyclone and the like that performs the exhaust air treatment becomes complicated, resulting in high costs. is there.

[0004]

SUMMARY OF THE INVENTION According to the present invention, in order to increase the wind pressure of a feed fan and collect the remaining kernels in a rice cabin at an outlet, an air chamber having a multi-part floor is formed. It is an object of the present invention to provide a grain discharge device configured to collect and transfer grain by selectively blowing air to a blowing chamber of a section, and sequentially switch to each adjacent chamber to send grain.

In order to increase the wind pressure for grain collection, the floor of a circular grain tank (1) is composed of a multi-part ventilation chamber (2), and a ventilation port (3) is provided at an outlet (4). An air blowing means for opening toward the bottom and discharging the remaining particles sequentially from the tip of the hem was provided.

[0006] An annular air passage (5) connected to the feed fan (18) is provided, a feed port (6) leading to the ventilation chamber (2) is opened in the outer cylinder (14), and air leakage is caused by a sealing material. The shutter (7), which can be freely opened and closed, is connected to an air cylinder (22) fixed to the outer wall, and a means for opening and closing by an electromagnetic device is provided.

A shutter (7) for opening and closing the ventilation chamber (2) and the annular air passage (5) is arbitrarily selected by an operation switch (S) so as to blow air to one or a plurality of the ventilation chambers (2). The means to switch to were taken.

An annular air passage (5) extends above the ventilation floor (10), and is connected to the outlet (1) communicating with the grain tank (1).
1) was opened close to the ventilation floor surface (10), and the cover (12) was hung down from the inside, and a means for automatically opening by wind pressure when a very small amount of residue was left.

A partition (13) is arranged radially from an outlet (4) provided in the center of the circular grain tank (1), and the upper rail (15) is adjacent to the side surface (30) of the ventilation chamber (2). By means of joining, measures were taken to disperse the weight of the stored grains.

The adjacent side surface (30) is formed in an inwardly tapered shape so as not to form a gap with the adjacent ventilation chamber (2), and is sandwiched by the upper rail (15) to be fitted, so that the contact surface (31) is formed.
A means for forming the bottom surface of the grain tank (1) in which the grains were elastically bonded was employed.

An auxiliary fan (17) interlocked with the activation of the discharge conveyor (16) is provided in parallel with the feeding fan (18), and a discharge port (20) is provided at a suction port (21) of the feeding fan (18). In order to increase the wind pressure by arranging multiple fans in multiple stages.

[0012]

DETAILED DESCRIPTION OF THE INVENTION 【Example】

The structure of the grain discharging apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the whole rice cabin, in which a large grain tank (1) is covered with a roof. A ventilation chamber (2) having a divided structure for receiving dry air from a supply fan (18) is laid at the bottom to form a floor surface, and a ventilation port (3) is formed on the entire ventilation floor surface (10). Opening toward the outlet (4), the drying air from the constant humidity dryer (23) is sent to the grains stored in the grain tank (1) to each chamber through the annular air passage (5). This is a rice cabin (A) having the following configuration.

An outlet (4) is provided at the center of the grain tank (1), and a discharge conveyor (16) is connected below the outlet (4), and the discharge side faces an elevator (8) which is set up outside the machine. It is for discharging grains, and the ventilation chambers (2) divided into multiple sections from the outlet (4) are radially arranged and combined to form a circular ventilation floor (10). This is a boundary surface for separating the part (B) and the grain tank (1).

Next, the ventilation path will be described.
An annular air passage (5) communicating with the feed fan (18) is provided on the outer periphery of the lower part of (4), and a feed port (6) leading to each of the divided ventilation chambers (2) is provided in the outer cylinder (14). A shutter (7) is provided with a large opening. The opening and closing operation is performed by connecting an air pipe (25) connected to the compressor to each chamber and connecting the air pipe (22) provided with an electromagnetic valve (26) switched by an electric signal to an operation switch (S). ), The number of the ventilation chambers (2) is selected, the electromagnetic valve (26) is opened, and the shutter (7) is slid, and the structure is such that the supplied wind is adjusted according to the type and specific gravity of the grain. Then, the air is blown into the restricted ventilation chamber (2) to increase the wind pressure, and the blast blown out from the ventilation port (3) is used to sequentially feed the grain from the remaining skirt portion which is piled up. (C) is a control device for automatically switching the ventilation chamber (2) according to the ventilation time.

FIG. 2 is an overall plan view showing a cross section of a main part of the rice cabin, which is an embodiment diagram in which a floor of a grain tank (1) is formed by a ventilation chamber (2) which is divided into multiple sections. Floor (1
A vent (3) provided on the entire surface of (0) is opened toward an outlet (4) to blow out compressed air. This compressed air is supplied by a multi-stage fan configuration in which the discharge port (20) of the auxiliary fan (17), which is activated during the grain discharging operation, communicates with the intake port (21) of the feed fan (18). Since the wind power is increased, and the air is blown only to the limited ventilation chamber (2), the wind pressure is further increased and the power to feed the grain is improved. When the auxiliary fan (17) is started, the pipe leading to the constant humidity dryer (23) is shielded by a rotatable air path valve (27), and the constant humidity dryer (2) is closed.
The wind path is switched to the air path in which the air intake from 3) is stopped, and the auxiliary fan (17) and the air path of the feed fan (18) are connected to each other, so that the wind used for the grain discharging work in which the compressed air is generated is generated. Road structure.

FIGS. 3 and 4 are plan views showing the arrangement of the ventilation chamber and the ventilation port, and the ventilation opening toward the outlet (4) provided at the center of the circular grain tank (1). The mouth (3) is set at an opening interval at which the stored grains do not fall, and the ventilation floor (10)
Extruded over the entire surface of the air-permeable floor (10)
However, the side surface (30) adjacent to the ventilation chamber (2), which opposes the weight of the stored grains, is provided on the upper rail (13) of the bulkhead (13) radially arranged from the outlet (4). 1
Since it is fitted and joined to 5), it has a floor structure capable of supporting the loading load in a distributed manner. A supply port (6) is opened in the outer cylinder (14) with which the ventilation chamber (2) is in contact, and an open / close shutter (7) for supplying compressed air from the annular air passage (5) is attached. Locked by a guide rail (9), the intermediate part is connected to an air cylinder (22) and slides up and down.

FIG. 4 is a cross-sectional view and a plan view of the vent opening to the vent floor, and the vents (3) extruded at equal intervals downward from the vent floor (10). It is a divided configuration of the ventilation chamber (2) which feeds the grains by the compressed air blown in the direction of the arrow (b) toward (4), and the arrangement and the shape of the ventilation holes (3) are as follows. In the direction of the outlet (4), as long as it is extruded downward from the ventilation floor (10), even if it is an arbitrary size that can maintain a staggered arrangement or an opening interval that does not drop particles. A similar effect can be obtained.

FIG. 5 is a side view showing the shutter opening / closing device. In the grain tank (1) in which the ventilation part (B) is divided into the ventilation chamber (2), the lower part of the outer cylinder (14) is shown. The shutter (7) is slidably attached to the feed opening (6), and both ends are locked by guide rails (9).
A slide structure in which an intermediate portion is connected to an air cylinder (22) fixed to the outer cylinder (14). The way of operation is connected via an electromagnetic valve (26) to a compressed air pipe (25) connecting the air cylinder (22) provided in each chamber via an electromagnetic valve (26). ) To lift and open. Further, an annular air passage (5) extends from the lower surface, and an outlet (11) communicating with the grain tank (1) is opened close to the ventilation floor (10), and a cover (12) is opened from the inside. Is closed by the pressure of the stored kernels. When the residual kernels decrease, they are automatically opened by wind pressure in the direction of arrow (c), and air is blown on the ventilation floor (10) in the direction of the chain line arrow shown in the figure. It promotes grain collection.

FIG. 6 is a perspective view of the divided ventilation chamber, and a radial partition wall (4) is directed from the outlet (4) provided at the center of the cylindrical grain tank (1) toward the outer cylinder (14). 13)
Are provided, and an inwardly tapered adjacent side body (3) welded to the ventilation chamber (2) on the U-shaped upper rail (15).
0) is divided into a plurality of pieces, and is fitted to the rim of the upper rail (15) and clamped, so that the contact surfaces (31) are sequentially joined to form the bottom surface of the grain tank (1). It is.
In addition, in order to shield the adjacent ventilating part (B), the adjacent side body (30) is integrally combined with the elongated body and the above-mentioned divided body is combined and joined. or,
In the embodiment, the ventilation floor (10) has a horizontal plane, but the funnel may be formed in a funnel shape facing the outlet (4) provided in the center to facilitate the feeding. The ventilation floor of such a combination structure (1)
0) is that cleaning and inspection work can be easily attached and detached with a small block.

FIG. 7 is a cross-sectional view of the joint portion obtained by arbitrarily dividing the bottom surface of the grain tank, and shows a joint structure for laying appropriately divided ventilation chambers (2). The body (30) is tapered inward to form a wedge space (32), and the rim width (T1) of the upper rail (15) to which the lower surface fits is set to the fitting width of the adjacent side body (30). The contact surfaces (31) are drawn narrower than (T2) and are brought into close contact with each other by the elasticity of the steel plate compressing the wedge space (32). It should be noted that the same effect can be exerted even if the adjacent side body (30) is formed of a continuous and long one or the divided shape shown in FIG.

[0022]

Since the present invention has been implemented in the form described above, the following effects can be obtained.

The ventilation section of the grain tank is constituted by a multi-part ventilation chamber, and the ventilation is switched to a limited chamber to increase the wind pressure, and the blast from the ventilation port sends the grain toward the outlet. In addition, no damaged particles were generated and the residual amount was reduced to a very small level as compared with the sweep auger in which the discharge conveyor turned.

The multi-stage arrangement of a plurality of fans in which auxiliary fans are activated in conjunction with the discharge conveyor operated during the discharge operation of the grains further increases the wind pressure and enhances the grain sending action by the blast.

Each of the ventilation chambers is provided with an openable and closable shutter,
According to the type and specific gravity of the grains to be stored, a small number of ventilation chambers to receive air from the annular air passage are selected with an operation switch and the centralized air is sent, so that the wind power can be adjusted according to the conditions of the stored grains.

Since the ventilation section is composed of a multi-chamber ventilation chamber, the filling weight of the stored grain is dispersed and supported, the rigidity of the entire floor surface is improved, and cleaning and inspection disassembly and assembly can be performed. It could be done easily by attaching and detaching small blocks.

The wedge space is formed by making the adjacent side surface of the ventilation chamber tapered inward, and the wedge space is formed so as to be fitted to the upper rail and held therebetween, so that the contact surface can be drawn by the elasticity of the steel plate. No gap was formed at the joint.

[Brief description of the drawings]

FIG. 1 is a cross-sectional side view of the entire rice cabin.

FIG. 2 is a cross-sectional plan view of a main part of the rice cabin.

FIG. 3 is a plan view showing the arrangement of a ventilation chamber and ventilation holes.

FIG. 4 is a cross-sectional view and a plan view of a vent opening to the vent floor.

FIG. 5 is a sectional view showing a shutter opening / closing structure.

FIG. 6 is a perspective view of a divided ventilation chamber.

FIG. 7 is a cross-sectional view showing a joint portion of the ventilation chamber which is arbitrarily divided.

[Explanation of symbols]

A. . Rice cabin B. . Ventilation section
S. . Operation switch T1. . Edge width T2. . Fit width 1. . Grain tank 2. . Ventilation room
3. . Vent 4. . Outlet 5. . Annular airway
6. . Outlet 7. . Shutter 9. . Guide rail 1
0. . Ventilated floor 12. . Cover 13. . Partition wall 1
4. . Outer cylinder 15. . Upper rail 16. . Discharge conveyor 1
7. . Auxiliary fan 18. . Feed fan 22. . Air cylinder 2
5. . Air tube 26. . Solenoid valve 30. . Adjacent side body 3
1. . Contact surface 32. . Wedge space a. . The opening direction of the shutter. B arrow. . The opening direction of the outlet cover. C arrow. . Direction of air flow from vent.

Claims (7)

[Claims] 1. A rice grain cabin having an outlet at the center of a grain tank communicated with a blower and a vent on a floor surface for blowing the stored grains is provided in a circular grain tank (1). ) Is formed by a multi-part ventilation chamber (2), and a vent (3) provided in a ventilation floor (10) is opened toward an outlet (4). Grain discharging device. 2. An annular air passage (5) connected to a feed fan (18) is provided on the outer periphery of the rice cabin (A), and a feed port (6) communicating with the ventilation chamber (2) is provided in an outer cylinder (14). )
2. The grain discharging device for rice cabin according to claim 1, further comprising a shutter (7) that can be freely opened and closed. 3. An openable and closable shutter (7) for supplying air to the ventilation chamber (2) from the annular air passage (5) is selected by an operation switch (S), and the shutter is opened to one or a plurality of the ventilation chambers (2). 3. The rice cabin grain discharging device according to claim 2, wherein air is blown. 4. An air passage (5) extending above the ventilation floor (10), and an outlet (11) communicating with the grain tank (1) approaching the ventilation floor (10). And the outer cylinder (1
The grain discharging device for a rice cabin according to claim 1, characterized in that the grain is discharged from the inside of the rice cabin (4), and the cover (12) is hung down from the inside, and is closed by pressing the accumulated grain. 5. A partition (13) is arranged radially from an outlet (4) provided at the center of a circular grain tank (1), and is ventilated to an upper rail (15) fixed to an outer cylinder (14). Room (2)
2. The grain discharging device for rice cabin according to claim 1, wherein a lower surface of the grain tank is joined to form a floor surface of the grain tank (1). 3. 6. The ventilation floor (1) of the circular grain tank (1).
In the rice cabin, which is formed by dividing 0), the side wall (30) adjacent to the ventilation chamber (2) is tapered inward to form a wedge space (32), and the upper rail (15) to which the joint is fitted. A grain discharging device for a rice cabin, characterized in that the rice cabin is nipped to compress the wedge space (32) to elastically hold both contact surfaces (31). 7. An auxiliary fan (17) interlocked with the activation of the discharge conveyor (16) is provided in parallel with the feed fan (18), and a discharge port (20) is provided at the intake port (21) of the feed fan (18). The rice cabin grain discharger is characterized in that both fans are arranged in multiple stages.