JPH031758Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a cylindrical grain ventilation dryer in which the grain vat into which the grains to be dried are filled is made into a cylinder or a polygonal tube with the axial direction being the vertical direction.

The above-mentioned cylindrical grain ventilation dryer is usually constructed by constructing a cylindrical body 2 with the axial direction up and down on a constructed foundation 1, as shown in FIG. At a position slightly higher than the floor of base 1,
A floor plate 3 made of an air-permeable bulkhead is placed on a shelf, and the upper part of the floor plate 3 is formed into a grain tank a into which grain is loaded by an elevator 4 attached to the outside of the fuselage 2, and the space below the floor plate 3 is defined as the air guide path b, and by blowing drying air there with the blower 5, the drying air blows through the grain layer G deposited on the floorboard 3 from below, thereby drying the grains. During the drying process, a vertical auger 8 supported by a hanging rod 7 installed in the upper part of the machine body 2 so as to revolve around the machine casing 6 removes the grains accumulated on the floorboard 3. By stirring the grain layer G and completing the drying process,
By means of a horizontal auger 10 that rotates on its own axis while revolving around the machine casing 9 along the upper surface of the floor plate 3,
A discharge port 1 for discharging grains is provided in the center of the floorboard 3.
1, and transported out of the machine by a discharge conveyor 12.

By the way, the cylindrical grain ventilation dryer A having such a configuration is capable of drying the grain layer G stretched in the grain tank a.
Since the vertical auger 8 for stirring circulates inside the grain tank a by the hanging rod 7 that revolves, the vertical auger 8 is used to move the grains that are in contact with the inner surface of the peripheral wall 2a of the grain tank a. Since it is difficult to arrange it close to the inner surface of the peripheral wall 2a until it flows,
There is a problem in that the flow of grains in the portions that are in contact with the peripheral wall 2a of the grain tank a tends to become stagnant, resulting in uneven drying.

The present invention was devised to solve this problem, and is designed to ensure that a sufficient supply of drying air is applied to the grains in the area that is in contact with the inner surface of the peripheral wall 2a of the grain tank a. The purpose of the present invention is to provide a new means that can eliminate the uneven drying that occurs.

In the present invention, as a means to achieve this objective, a floor plate 3 made of an air permeable bulkhead is placed on a shelf inside the cylindrical fuselage 2 with the axial direction being the vertical direction, and The space inside the fuselage 2 is formed into a grain tank a, and the space below the floor plate 3 is formed into an air guide path b leading to the air blower 5, and the upper part of the fuselage 2 is equipped with a hanging rod 6 that rotates around the revolution. In a cylindrical grain ventilation dryer A that is mounted and supports a vertical auger 8, a peripheral wall 2a of the grain tank a is placed at a predetermined height above the floor plate 3 in the grain tank a.
A funnel-shaped ring c protruding downwardly from the inner surface of the grain tank is provided, and countless ventilation holes b are formed between the back side of the ring c and the inner surface of the peripheral wall 2a of the grain tank a. A ring-shaped empty space e is connected to an air guide path b below the floor plate 3 via a bypass-like duct f.
The present invention proposes a cylindrical grain ventilation dryer in which the duct f is connected to the duct f and is provided with an opening/closing shutter g.

Next, an example of implementation will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings as in the previous means are used for components having the same effect.

Fig. 2 is a longitudinal side view of a cylindrical grain ventilation dryer A in which the present invention can be carried out. 3 is a floor plate made of a breathable bulkhead, a is a grain tank formed by the internal cavity of the fuselage 2 above the floor plate 3, and b is a space at the bottom of the fuselage 2 below the floor plate 3. Air guide path to be formed, 4
5 is a blower for sending dry air into the air guide path b; 6 is an axis line of the body 2 at the upper part of the inner cavity of the body 2; Machine casing that can be mounted to rotate around the center, 7
8 is a hanging rod whose base end is pivotally supported on the machine casing 6 and whose tip side is mounted on an annular rail 70 provided on the inner surface of the machine body 2; 8... is a vertical auger supported on the hanging rod 7; 9 is a discharge port 11 that is opened in the center of the floorboard 3.
A machine casing 10 is arranged inside the machine casing 9 to rotate about the axis, and a base end thereof is rotatably supported on the machine casing 9, and a rolling wheel 13 provided on the distal end side is attached to the upper surface of the floor plate 3. 12 is a conveyor for carrying out, 14 is a conveyor for loading, and these are the same as the conventional cylindrical grain ventilation dryer.

In the figure, c is a funnel-shaped ring provided on the inner surface of the grain tank a, e is an annular cavity formed between the back side of the ring c and the inner surface of the peripheral wall 2a of the grain tank a, f... is the vacant room e and the air guide path b below the floorboard 3
A bypass-shaped duct communicates with the duct f, and g indicates an opening/closing shutter provided in the duct f.

The funnel-shaped ring c is formed by forming a perforated plate into a shallow funnel shape as shown in FIG. By fixing to the inner surface of the peripheral wall 2a of the grain tank a at approximately the midpoint between the top and bottom, the ring is installed so that it gradually slopes downward inward toward the lower periphery, thereby making it possible to connect the back side of the ring c and the grain tank. A hollow space e having a substantially triangular cross section as shown in FIG. 2 is continuously formed in an annular shape between the inner surface of the peripheral wall 2a and the inner surface of the peripheral wall 2a.

A bypass-like duct f that communicates this empty space e with the air guide path b below the floorboard 3 is formed by a pipe separate from the fuselage 2, and as shown in FIG. Elbows are arranged at a plurality of locations and provided at both upper and lower ends of each, and elbows are provided at locations corresponding to the through holes 2b and air guide paths b formed in locations corresponding to the voids e of the peripheral wall 2a. By connecting to the through hole 2c, the air guide path b and the cavity e are connected to each other at a plurality of locations.

Further, the opening/closing shutter g is installed in the upper and lower intermediate portions of each of the ducts f in the form of a variable throttle valve whose opening degree can be freely adjusted by operating an operating portion H from the outside.

Note that the funnel-shaped ring c described above may be installed in multiple stages vertically as shown in FIG. In this case, the duct f is provided with opening/closing shutters g in multiple stages.

The embodiment device constructed in this manner operates as follows.

As shown in Fig. 2, the grains are loaded into the grain tank a by the elevator 4 to the usual loading height L, and while the vertical augers 8 are operated, the blower 5 blows dry air (outside air or If the hot air (generated by the hot air generator) is forced into the air guide path b, the compressed air from this dry air is mainly stirred and fluidized by the vertical auger 8 and passes through the area where it is in a coarse accumulation state. Then, the air blows through above the grain layer G, and is guided through an exhaust port 16 provided on the roof 15 of the machine body 2 to a dust collector provided at a desired location by an air exhaust duct.

At this time, if the opening/closing shutter g provided in the bypass-shaped duct f is opened and adjusted to the desired opening degree, a part of the pressure air sent into the air guide path b is transferred to the duct f. The air is blown into the empty chamber e on the back side of the funnel-shaped ring c installed at the middle part between the top and bottom of the inner surface of the grain tank a, and is blown out from the countless ventilation holes d... provided in the ring c. Therefore, the second
As shown by arrow A in the figure, the grains deposited above the ring c blow through the portion along the inner surface of the peripheral wall 2a of the grain tank a in a short-circuit manner.

As explained above, the cylindrical grain ventilation dryer according to the present invention has a floor plate 3 made of an air-permeable partition wall installed in a cylindrical body 2 whose axial direction is the vertical direction.
The space inside the fuselage 2 above the floor plate 3 is formed as a grain tank a, and the space below the floor plate 3 is formed as an air guide path b leading to the air blower 5. In a cylindrical grain ventilation dryer A equipped with a movable hanging rod 6 and supporting a vertical auger 8, the grain tank is placed at a predetermined height above the floor plate 3 in the grain tank a. A funnel-shaped ring c is installed that projects downwardly from the inner surface of the peripheral wall 2a of grain tank a, and is provided with countless ventilation holes b. The ring-shaped empty space e formed between the two is connected to the air guide path b below the floorboard 3 through a bypass-like duct f, and the duct f is provided with an opening/closing shutter g. Floor board 3 is installed inside grain tank a.
In the grain layer G deposited on top, by conventional means,
The drying air is now effectively delivered to the grains along the inner surface of the peripheral wall 2a of the grain tank a, where it was difficult for the drying air to blow through, eliminating uneven drying and drying the grains. Be able to do it.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of a conventional cylindrical grain ventilation dryer, Fig. 2 is a longitudinal sectional side view of a cylindrical grain ventilation dryer in which the present invention can be implemented, and Fig. 3 is a perspective view of the main parts of the same. ,
FIG. 4 is a longitudinal sectional front view of the main parts of another embodiment same as the above. Explanation of drawing symbols, A...Cylindrical grain ventilation dryer, G
...Grain layer, H...Operation section, L...Pitching height position, a...
Grain tank, b...Air guide path, c...Ring, d...Vent hole, e
...Vacancy, f...Duct, g...Opening/closing shutter, 1...
Base, 10...Horizontal auger, 11...Discharge port, 12
... Carrying out conveyor, 13... Rolling wheels, 14... Conveyor for tensioning, 15... Roof, 16... Exhaust port, 2... Airframe,
2a...peripheral wall, 2b, 2c...through hole, 3...floorboard, 4...
Elevator, 5...Blower, 6...Machine casing, 7...Hanging rod, 70
...Rail, 8...Vertical auger, 9...Machine cabinet.

Claims (1)

[Scope of utility model registration request] A floor plate 3 made of an air permeable bulkhead is shelved in a cylindrical body 2 whose axial direction is the vertical direction, and a space inside the body 2 above the floor plate 3 is formed into a grain tank a. The lower space is formed into the air guide path b leading to the air blower 5, and the upper part inside the fuselage 2 is
In the cylindrical grain ventilation dryer A, which is equipped with a revolving hanging rod 6 and supporting a vertical auger 8, the dryer is placed at a predetermined height above the floor plate 3 in the grain tank a. A funnel-shaped ring c is installed that projects downwardly from the inner surface of the peripheral wall 2a of the grain tank a, and is provided with countless ventilation holes d. A cylindrical grain in which a ring-shaped cavity e formed between the inner surface and the inner surface is communicated with an air guide path b below the floor plate 3 through a bypass-like duct f, and the duct f is provided with an opening/closing shutter g. Ventilation dryer.