JPH0335594B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a drying device.

Prior Art The present applicant has proposed that even if there is only one circulating dryer, the increased amount of material to be dried is stored in a tank attached to the circulating dryer, and the tank is used for adjusting the temperature of the circulating dryer. We proposed a unitized drying device that functions in the same way as a wet section.

However, this drying equipment is either equipped with a complicated relay conveyor or has elevators that protrude from the pipes, and in the former case, not only does the required power increase, but the direction of the transmission shaft is also inconsistent, and the transmission mechanism The latter has drawbacks such as increased installation height.

In addition, a dryer and a storage tank are installed side by side, and a plurality of grain lifting devices are installed between the drying tank and the storage tank to transport the grains to the storage tank and the drying tank. A screw conveyor connected to the lower part of a plurality of grain lifting devices is installed at the bottom of the drying tank and the storage tank so that the screw conveyor of the drying tank and the storage tank are arranged in parallel. A grain ventilation drying device identical to the above is known as Japanese Utility Model Publication No. 47-31351.

However, in this method, multiple grain lifting devices are installed in parallel in the same direction as the drying tank and storage tank between the separate drying tank and storage tank, so The drying tank became as wide as possible, the grain lifting equipment became taller, and it was difficult to install it in a narrow space, making it impossible to use the hot air after drying the grains in the drying tank.

Problems to be Solved by the Invention It is an object of the present invention to address the above-mentioned problems and to
The space between the dryer and the tank is narrowed as much as possible, reducing the overall floor area, requiring a small elevator installation height, allowing installation in narrow spaces, and reducing the amount of grain inside the dryer. The hot air that passes through the fan duct after drying is used in the tank, and the tank is strongly reinforced by the fan duct. There is no need to use the conventional complicated relay screw conveyor, the structure is simple, and circulation control is improved. The drying operation is simplified, there are fewer failures, there is no need to use direction changing mechanisms such as bevel gears, the transmission mechanism is simplified, there is no loss of power, and the required power and cost can be reduced. Since the dryer inlet and tank inlet can be located in the center of the dryer and tank, the height of the dryer and tank can be made more uniform, and both the dryer and tank are reinforced by an elevator, and the outer wall To provide a drying device which is formed in one plane and has no obstructive protruding parts.

Means for Solving the Problems The drying apparatus of the present invention includes a dryer and a tank, and a plurality of elevators are arranged between the dryer and the tank in a direction crossing the direction in which they are installed. interposed in series and close to the side walls inside the dryer and tank, forming the outer walls of the dryer, elevator and tank into one plane, and passing the fan duct of the dryer through the inside of the tank. a grain supply port is provided in the upper part of the dryer and the tank, a supply screw conveyor is provided on the same axis and rotatably connected to each of the grain supply ports, and the grain supply port is provided in the upper part of the plurality of elevators. The provided discharge portions are respectively connected to the supply screw conveyor, and discharge screw conveyors connected to the lower part of the plurality of elevators are rotatably provided on the same axis at the lower part of the dryer and the tank, respectively. Discharge rotary valves are provided on the upper part of the discharge screw conveyor so as to be rotatable on the same axis, and the directions of the rotation axes of the supply screw conveyor, the discharge screw conveyor, and the discharge rotary valve for the dryer and the tank are set. The structure is characterized in that the direction in which the dryer and tank are installed is the same.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIG. 5 and FIG. 6, reference numeral 1 denotes a circulating dryer, in which a circulating dryer 1 and a tempering tank 2 are installed together in the front and rear horizontal direction, and a circulating dryer 1 and a tempering tank are installed together. 2, a plurality of elevators 3, 3' are arranged in series in a direction intersecting the direction in which the circulating dryer 1 and the tempering tank 2 are installed, and between the circulating dryer 1 and the tempering tank 2. The outer walls of the circulation dryer 1, the elevators 3, 3', and the tempering tank 2 are formed in one plane.

As shown in FIGS. 1 and 4, the fan duct 4 of the circulating dryer 1 is connected to the elevator 3,
The opening end of the fan duct 4 faces the rear wall surface 21' of the tempering tank 2, and the fan F is disposed so as to pass through between 3' and the inside of the tempering tank 2. A burner B is attached to the front wall surface of the circulating dryer 1, which faces the rear wall surface 21' of the refining tank 2.

As shown in FIGS. 3 and 4, a tempering section 11 is formed inside the circulation dryer 1.
A drying section 12 is formed at the bottom of the drying section 12, a driving section 13 is formed at the bottom of the drying section 12, and the circulation dryer 1
consists of a refining section 11, a drying section 12, and a driving section 13.

As shown in FIGS. 2 and 4, a tempering section 21 is formed inside the tempering tank 2, a driving section 22 is formed in the lower part of the tempering section 21, and the tempering tank 2 is It consists of a section 21 and a drive section 22.

As shown in FIG. 4, a supply port 14 is provided in the upper part of the circulating dryer 1 at a position corresponding to between the elevators 3 and 3', and a supply port 14 is provided in the upper part of the tempering tank 2. 23 is provided at a position corresponding to between the elevator 3 and the elevator 3', and above the supply port 14 of the circulating dryer 1, a supply screw conveyor 5 is connected to the supply port 14 and is rotatably horizontal. The supply port 2 of the tempering tank 2
A supply screw conveyor 6 is connected to the supply port 23 and is horizontally suspended above the supply port 3 so as to be freely rotatable.

The supply screw conveyor 5 and the supply screw conveyor 6 have the same shaft, and the twist directions of the supply screw conveyor 5 and the supply screw conveyor 6 are opposite to each other.

A discharge section 31 is provided at the top of the elevator 3, and the discharge section 31 of the elevator 3 is connected to a chute 32.
A discharge section 31' is provided at the upper part of the elevator 3', and the discharge section 31' of the elevator 3' is connected to the supply screw conveyor 5 via a chute 32'.
has been contacted. (See Figure 1) Note that the communication may be switched from the discharge section 31 at the top of the elevator 3 to the supply screw conveyor 5, and from the discharge section 31' at the top of the elevator 3' to the supply screw conveyor 6. It is possible.

A discharge screw conveyor 7 is rotatably installed horizontally in the lower part of the circulating dryer 1, and the discharge screw conveyor 7 is connected to the lower part of the elevator 3. A screw conveyor 8 is rotatably suspended horizontally, and the discharge screw conveyor 8 is connected to the lower part of the elevator 3'. (See FIG. 4) The discharge screw conveyor 7 and the discharge screw conveyor 8 have the same shaft, and the twist directions of the discharge screw conveyor 7 and the discharge screw conveyor 8 are opposite to each other.

In addition, elevators 3 and 3' are shown in Figures 1 and 4.
In the figure, the elevators 3 and 3' are each provided with its own elevator frame over the entire length of the upper and lower sides, but it is also possible to omit this and directly install the elevators 3 and 3' in a naked structure.

Further, it is also possible to make the upper ends of the elevators 3, 3' flush with the upper end surfaces of the circulation dryer 1 and the tempering tank 2, without protruding upward.

As shown in FIG. 3, in the upper part of the discharge screw conveyor 7 in the circulating dryer 1, a plurality of discharge rotary valves 9 are arranged in a horizontal direction and are rotatably provided, and the refining tank 2 As shown in FIG. 2, on the upper part of the internal discharge screw conveyor 8, the same number of discharge rotary valves 10 as the rotary valves 9 are arranged horizontally and rotatably provided. It has the same shaft as the valve 10.

The directions of the rotation axes of the supply screw conveyors 5 and 6, the discharge screw conveyors 7 and 8, and the rotary valves 9 and 10 of the circulation dryer 1 and the tempering tank 2 are the same as those of the circulation dryer 1 and the tempering tank, respectively. The direction of installation is the same as that of 2.

Next, the operation of this embodiment will be explained.

First, when the circulation dryer 1 and the conditioning tank 2 are loaded with grains and the circulation dryer 1 is operated, the grains in the conditioning section 11 of the circulation dryer 1 are transferred to the lower part of the humidity conditioning section 11. After passing through the drying section 12, a plurality of rotating rotary valves 9 of a drive section 13 discharge the grains downward, and then to a rotating discharge screw conveyor 7 provided at the lower part of the circulating dryer 1. It is then sent to the lower part of the elevator 3 between the circulating dryer 1 and the tempering tank 2.

Next, the elevator 3 transports the grains upward, and the grains are fed from the discharge section 31 provided above the elevator 3 via the chute 32 to the supply screw conveyor 6 that rotates inside the tempering tank 2, and are supplied. It enters the refining section 21 in the refining tank 2 through the supply port 23 connected to the screw conveyor 6.

On the other hand, the grains in the tempering tank 2 are tempered in the tempering section 21 in the tempering tank 2, and then rotated together with the rotary valve 9 of the circulation dryer 1 in the drive section 22 at the bottom of the tempering section 21. A plurality of rotary valves 10 discharge the grain downwards, and then the circulating dryer 1 and the tempering tank 2 are moved along the discharging screw conveyor 8 which rotates together with the discharging screw conveyor 7 of the circulating dryer 1. It is sent to the lower part of the elevator 3' between.

Next, the elevator 3' transports the grains upward, and the grains are passed from the discharge section 31' provided above the elevator 3' to the tempering tank 2 through the chute 32'.
The feed port 14 is fed to the feed screw conveyor 5 which rotates together with the feed screw conveyor 6, and is connected to the feed screw conveyor 5.
It is returned to the refining section 11 of the circulating dryer 1 through the .

In this way, the grain is circulated through the circulating dryer 1 and tempering tank 2 in series.

During this time, burner B attached to circulation dryer 1
The hot air generated by
The grains are dried by passing through the drying section 12 of the circulating dryer 1 by a fan F attached to the air conditioning tank 2, and are then sucked into the fan duct 4 that penetrates the inside of the tempering tank 2 and discharged to the outside.

In addition, if the discharge parts 31 and 31' provided above the elevators 3 and 3' are switched in the opposite direction and connected to the supply screw conveyors 5 and 6, circulation tempering drying is performed only by the circulation dryer 1. It will be done.

In the examples, explanations are omitted regarding the means for loading grain and the means for taking it out of the machine. It is sufficient to use conventional technology such as attaching a screw conveyor 7, 8 directly to the upper part of the discharge screw conveyors 7, 8.
It goes without saying that a conventional technique may be used in which the water flows out from 2, 32' to a separately provided chute or the like using an appropriate switching device.

Effects of the Invention As described above, according to the drying device of the present invention, a dryer and a tank are installed together, and
By interposing multiple elevators between the dryer and the tank in a direction that intersects the direction in which the dryer and tank are installed, and by placing the fan duct of the dryer through the inside of the tank, the dryer The space between the dryer and the tank can be made as narrow as possible, and the elevator outlet, dryer inlet, and tank inlet can be placed close to each other, so the length of the chute can be shortened and the installation height of the elevator can be reduced. , it can be installed in narrow spaces, and the tank can be strongly reinforced with fan dougts.

In addition, a grain supply port is provided at the top of the dryer and the tank, and a supply screw conveyor is connected to the grain supply port so that it can rotate freely on the same axis, and a discharge section provided at the top of the multiple elevators is installed at the top of the dryer and tank. Each of the screw conveyors for supply is connected to the screw conveyor for supply, and the screw conveyor for discharge is connected to the lower part of the plurality of elevators in the lower part of the dryer and the tank.
Discharge rotary valves are installed on the top of the discharge screw conveyor so that they can rotate freely on the same axis, and the directions of the rotation axes of the dryer and tank supply screw conveyor, the discharge screw conveyor, and the discharge rotary valve are set respectively. Since the dryer and tank are installed in the same direction, there is no need to use a complicated relay screw conveyor like in the past, simplifying the structure and allowing the grain in the dryer to enter the tank directly from the elevator through the conveyor. Therefore, the operation of circulation temper drying can be simplified, there are fewer failures, and the rotation axes of the supply screw conveyor, the discharge screw conveyor, and the discharge rotary valve are all in the same direction, so there is no problem with bevel gears, etc. There is no need to use a direction changing mechanism, the transmission mechanism is simple, there is no loss of power, and the required power and cost can be reduced.

In particular, in the present invention, each elevator is close to the side wall of the dryer and tank, and the dryer inlet and tank inlet can be located in the center of the dryer and tank, so the height of the tensioning can be made more uniform. Both the dryer and the tank are reinforced by the elevator, and the outer walls of the dryer, the elevator, and the tank are formed in one plane, so there are no protruding parts that would get in the way.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of a drying apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line in FIG. 1, and FIG.
The figure is a line-sectional view of Figure 1, and Figure 4 is a cross-sectional view of Figure 1.
5 is a front perspective view of the drying device, and FIG. 6 is a rear perspective view of the drying device. 1... Circulating dryer, 2... Conditioning tank, 3,
3'...Elevator, 4...Fan duct, 5,
6... Supply screw conveyor, 7, 8...
Discharge screw conveyor, 9, 10...rotary valve, 11...thermal treatment section, 12...drying section, 13...
Drive section, 14... Supply port, 21... Heat refining section, 2
1'... Rear wall surface, 22... Drive section, 23... Supply port, 31, 31'... Discharge section, 32, 32'... Chute, B... Burner, F... Fan.

Claims (1)

[Claims] 1. A dryer and a tank are installed together, and a plurality of elevators are arranged in series between the dryer and the tank in a direction intersecting the direction in which they are installed,
and intervening near the side walls of the dryer and the tank, forming the outer walls of the dryer, the elevator, and the tank into one plane, and disposing the fan duct of the dryer penetrating the inside of the tank, A grain supply port is provided at the upper part of the dryer and the tank, a supply screw conveyor is rotatably connected to each of the grain supply ports with the same axis, and a discharge section is provided at the top of the plurality of elevators. are connected to the supply screw conveyor, and a discharge screw conveyor connected to the lower part of the plurality of elevators is rotatably provided on the same axis at the lower part of the dryer and the tank, and the discharge screw conveyor is connected to the supply screw conveyor. Discharge rotary valves are provided on the upper part of the conveyor so as to be rotatable on the same axis, and the directions of the rotation axes of the supply screw conveyor and the discharge screw conveyor and discharge rotary valve of the dryer and tank are respectively set to the dryer and the tank. A drying device characterized in that the direction of installation of the tank and the tank are the same.