JPS637836Y2 - - Google Patents

Description

[Detailed description of the invention] In the present invention, the grain tank in which grains are loaded is formed into a cylindrical shape with a vertical axis, and its floor plate is formed with an air-permeable partition wall. A grain dryer that uses drying air supplied from below to dry the grains placed in a grain tank and deposited on the floorboard, during the drying process of the grains in the grain tank. In order to circulate the flow, the above-mentioned floor plate is formed into a funnel shape that slopes downward toward the outlet made at its center, and the upper surface of the floor plate is made to revolve around the center of the floor plate as the center of revolution. The present invention relates to an improvement in a circulating cylindrical grain drying device in which a discharge auger that rotates on its own axis is disposed.

The above-mentioned circulating cylindrical grain drying device uses a discharge auger installed on the top of the floorboard to control the grain to a constant discharge amount and discharge it from the discharge port. During the drying process, the grains are returned to the top of the grain tank using an elevator installed outside the grain tank and circulated, while drying is carried out by blowing drying air from below the floorboards. The grains accumulated in the drain flow down the sloping top of the funnel-shaped floor plate toward the outlet, which causes an excessive amount of grain to flow into the outlet and cause a blockage. In order to prevent this from occurring, an umbrella-shaped cover is provided around the gearbox that pivotally supports the base end of the auger, the lower edge of which slides against the top surface of the floorboard at the periphery of the outlet. , the area is sealed except around the auger that scrapes the grain.

However, upon completion of drying, the grains discharged from the discharge port are discharged from the ejection trough of the elevator.
When the grains loaded in the grain tank are taken out of the machine, the grains that remain on the upper surface of the floorboard accumulate on the outer periphery of this umbrella-shaped cover, and the accumulated grains follow the cover. Problems have arisen with increased residual paddy as it flows and is not carried to the auger which protrudes from the cover.

An object of the present invention is to effectively solve the problem of increased residual paddy caused by this umbrella-shaped cover.

To achieve this purpose, the circulating cylindrical grain drying device according to the present invention has a funnel-shaped floor plate with an outlet in the center in a cylindrical grain tank with a vertical axis. The grain tank is formed with a partition wall and placed on a shelf, and the lower part of the floor plate is formed into an air guide path that connects and communicates with the air blower, and the cylindrical exhaust pipe is installed at the axial center of the grain tank above the floor plate. , arranged coaxially with the grain tank and fixedly supported on the grain tank with its lower end facing above the discharge port, and having the upper surface side of the floor plate facing the center of the discharge port. In a circulating cylindrical grain drying device equipped with an auger that rotates while revolving around itself and whose base end is supported by a gear box supported on a machine frame, a lower end edge is provided on the upper surface of the gear box, covering the upper side of the gear box. An umbrella-shaped cover that is close to or in sliding contact with the upper surface of the floor plate is supported by an air cylinder that rotates together with the gearbox and is supported so as to be freely raised and lowered with respect to the gearbox, and is supported on the lower end of the exhaust pipe. , is characterized in that the air cylinders are connected to each other so as to be raised and lowered by controlling the air cylinders.

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

In Fig. 1, 1 is a grain tank formed in a cylindrical shape with a vertical axis, and is built on a foundation 2.
An umbrella-shaped roof 10 is placed over the top.

Reference numeral 3 denotes a floor plate shelved in the grain tank 1, which is formed into a funnel shape by an air-permeable partition wall, and has a discharge port 30 in its center. The angle of inclination of the central portion of the floor plate 3 toward the outlet 30 is set to an angle (greater than the angle of repose of the grains) at which the grains deposited on the upper surface of the floor plate 3 naturally flow out.

Further, a discharge pipe 31 that hangs below the floor plate 3 is connected to the discharge port 30, and a rotary valve 33 that is driven and rotated by transmission through a motor shaft and a transmission mechanism 32 is connected to the opening at the lower end of the discharge pipe 31. It is pivoted.

4 is an air guide path formed below the floor plate 3 and between the floor plate 3 and the upper surface of the foundation 2;
It is connected and communicated with an air outlet 50 of an air blower 5 installed on the outside of the grain tank 1 through a communication port 40 formed in the hem of the grain tank 1 .

6 is a belt conveyor for carrying out grains that carries out the grains discharged from the above-mentioned discharge port 30 to the outside of the machine;
Utilizing the air guide path 4 consisting of the space below the floor plate 3, the starting end in the conveyance direction is connected to the discharge pipe 31.
It faces below the opening at the lower end of the grain tank 1, and is installed in such a manner that its terminal end protrudes outside the grain tank 1 through an opening in the peripheral wall 11 of the grain tank 1. And the belt conveyor 6
is surrounded by a box-shaped case 60 that is blocked from the air guide path 4, and the case 60 is connected to the discharge pipe 31 by connecting the lower end opening of the discharge pipe 31 to the ceiling wall of the case 60. Connection is communicating. The terminal end of the belt conveyor 6 that protrudes outside the grain tank 1 is connected to and communicates with the lower part of an elevator 12 installed outside the grain tank 1, and the discharge port at the upper end of the elevator 12 is
It is in switchable communication with a loading conveyor 13 and a take-out gutter 14 which communicate with the upper part of the inner cavity of the grain tank 1.

Reference numeral 7 denotes an exhaust pipe disposed at the axial center of the inner cavity of the grain tank 1, which is formed in a cylindrical shape, and whose axial center line is located at the central axis of the inner cavity of the grain tank 1.
The exhaust rack 7 is arranged coaxially with the axis of the exhaust rack 7, and is arranged such that its lower end faces above the above-mentioned exhaust port, and serves as a stay that projects radially from the outer peripheral surface of the exhaust rack 7.
0... is fixedly supported on the peripheral wall 11 of the grain tank 1. As shown in FIG. 2, the exhaust rack 70 is a so-called triangular louver made by bending an iron plate into an angled shape, and is used with its open side facing downward. When the floor board 3 is blown up to the height shown by the chain line A in Figure 1 and drying air is supplied from below, the drying air that has passed through the grain layer and reached the exhaust rack 70 is shown in Figure 1. It acts to guide the air into the lumen of the exhaust pipe 7 as shown by the chain arrow B. As shown in FIG. 1, this exhaust rack 70 is arranged in a state substantially parallel to the upper surface of the inclined floor plate 3.

8 is an auger arranged on the upper surface side of the floor plate 3 so as to rotate while revolving around the upper surface of the floor plate 3 so as to scrape the grains loaded into the grain tank 1 toward the discharge port 30; The base end side of the rotating shaft 8a is a machine frame 8 that is arranged in the inner cavity of the discharge port 30 and stands up from the foundation 2.
Upper half side 81 of gearbox 81 supported on
a, and the upper half side 81a is supported by the lower half side 81b.
By rotating around the vertical axis, the rotary shaft 8a rotates, and during the revolution, the rotating shaft 8a rotates and acts to scrape the grains toward the discharge port 30.

Reference numeral 9 denotes an umbrella-shaped cover supported on the upper surface of the gear box 81, as shown in FIG.
A stay 9 is integrally provided with a support shaft 82 rising upwardly on the upper surface of the gear box 81, and the upper end of the support shaft 82 is suspended over an opening at the lower end of the exhaust pipe 7.
0, and on the outer periphery of the support shaft 82,
A sliding tube 91 is fitted so that it can freely slide and rotate up and down, and the cover 9 is integrally assembled and supported on the sliding tube 91, and on the outer periphery of the sliding tube 91,
A support frame 9 connected to an operating rod 93 for raising and lowering an air cylinder 92 assembled and supported by the stay 90.
4 are rotatably connected to each other, and furthermore, a guide member 83 is fitted to the lower end portion of the support shaft 82 to be slidably fitted in the vertical direction with a guide rod 95 that hangs down from the inner surface of the top plate of the umbrella-shaped cover 9. is fitted so as to rotate together with the support shaft 82, so that when the operating rod 93 of the air cylinder 92 is lowered, the umbrella-shaped With the lower edge 9a of the cover 9 in sliding contact with or very close to the upper surface of the floorboard 3, it rotates together with the auger 8 and the upper half 81a of the gearbox 81 that pivotally supports it, and the air cylinder 92 operating rod 93
When the auger 8 is raised, the umbrella-shaped cover 9 is pulled up to form a space between its lower edge 9a and the upper surface of the floorboard 3 through which grains can pass, and the auger 8 and its pivot support are raised. gear box 81
It is designed to rotate together with the upper half side 81a.

Note that 96 is a sealing member made of a flexible material such as rubber attached to the hem of the cover 9.

Next, to explain the function and effect, the circulation type cylindrical grain drying device according to the present invention configured as described above has the advantage that the grains deposited on the upper surface of the floor plate 3 formed in the shape of a funnel are The flow along the floor surface that slopes downward toward the discharge port 30 and excessive flow into the discharge port 30 is caused by an umbrella-shaped structure provided to cover the gear box 81 of the auger 8 provided on the upper surface side of the floor plate 3. This is blocked by cover 9. When the grains in the grain tank 1 are taken out of the machine, the grains that accumulate and remain on the outer surface of the hem of the cover 9 are removed by an air cylinder 92 provided at the lower end of the exhaust pipe 7. By operating the cover 9 and raising the cover 9, water flows into the discharge port 30 from the gap formed between the lower edge 9a of the cover 9 and the upper surface of the floor plate 3, and is discharged by the auger 8 rotating. Since the rice grains are dredged into the outlet 30, the problem of increasing the amount of remaining rice grains due to the cover 9 is solved. And this cover 9
Since the raising operation is performed while rotating following the revolution of the auger 8, the operation of the auger 8 is not hindered.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of a circulating cylindrical grain drying device in which the present invention can be implemented, Fig. 2 is a partially cutaway perspective view of the exhaust rack of the same device, and Figs. 3 and 4 are the same as the above device. FIG. Explanation of drawing symbols, 1...grain tank, 10...roof,
11... Peripheral wall, 12... Elevator, 13... Conveyor, 14... Takeout gutter, 2... Foundation, 3... Floor plate,
30...Discharge port, 31...Discharge tube, 32...Transmission mechanism, 33...Rotary valve, 4...Air guide path, 40...Communication port, 5...Blower device, 50...
Air outlet, 6... Belt conveyor, 60... Case, 7... Exhaust pipe, 70... Exhaust rack, 8... Auger, 8a... Rotating shaft, 80... Machine frame, 81...
Gear box, 81a...upper half side, 81b...lower half side, 82...support shaft, 83...guide member, 9...
... Umbrella-shaped cover, 9a ... Lower edge, 90 ... Stay, 91 ... Sliding tube, 92 ... Air cylinder, 9
3... Operating rod, 94... Support frame, 95... Guide rod, 96... Seal member.

Claims (1)

[Scope of utility model registration request] In a cylindrical grain tank with the axial direction vertical, a funnel-shaped floor plate with an outlet in the center is formed with an air permeable bulkhead and is placed on a shelf, and the lower part of the floor plate is connected and communicated with an air blower. A cylindrical exhaust pipe is formed in the air guide path, and a cylindrical exhaust pipe is arranged coaxially with the grain tank at the central axis of the grain tank above the floorboard, with the lower end of the pipe facing above the outlet. The auger is fixedly supported on the grain tank, and on the top side of the floorboard is an auger that rotates around its axis and has its base end pivoted on a gearbox that faces the center of the discharge port and is supported on the machine frame. In the circulating cylindrical grain drying device, an umbrella-shaped cover is provided on the upper surface of the gear box and rotates integrally with the gear box, covering the upper part of the gear box and having a lower edge close to or in sliding contact with the upper surface of the floor plate. and a circulating cylindrical type, which is supported to move up and down freely with respect to the gearbox, and is connected to an air cylinder supported at the lower end of the exhaust pipe so as to move up and down under the control of the air cylinder. Grain drying equipment.