JPS6052422A - Device for discharging grains in grain drier - Google Patents

Abstract

PURPOSE:To enable grains to be smoothly discharged by connecting a discharging funnel to a lateral transfer chute having an inside transfer spiral to rotate said spiral only when grains are left in said funnel in discharging grains. CONSTITUTION:When grains are lifted by an elevator and circulated into a drier for drying through a guide frame 2 and a lateral transfer chute 4, a discharging port 5a of a discharging funnel 5 connected to the outside of the drier of said chute 4 is closed by a switch valve 7. On the other hand, when grains dried to a predetermined percentage of water content are discharged through said funnel 5, an operating rod 10 is pulled to swing the switch valve 7 through a discharging lever 9 for opening said port 5a. Then, a limit switch 19 and a pressure switch 20 are turned on to disengage a clutch and stop the transfer spiral 3 in said chute 4. When grains are left in said funnel 5, the pressure switch 20 is turned off by the pressure of the grains to put the clutch into engagement and rerotate the transfer spiral 3.

Description

[Detailed description of the invention] This invention relates to a grain discharge device in a grain dryer.

In order to take out the grains that have reached a predetermined moisture content out of the dryer, a horizontal transfer gutter that circulates and transfers the grains is generally provided with an opening/closing outlet so that the grains can be taken out.

In order to reduce losses due to circulation transfer into the dryer, the transfer spiral is stopped and all the grains from the elevator are tried to fall and feed into the grain discharge funnel, but if a large amount is supplied to the grain discharge funnel, this It is not easy to remove grains that overflow from the discharge funnel and accumulate in the horizontal transfer gutter.

This invention aims to solve the above-mentioned drawbacks and takes the following technical measures. That is, the elevator (1) and this elevator (
In a grain dryer that dries grains while circulating them through a horizontal transfer gutter (4) or the like having a rotating transfer spiral (3) inside and communicating with 1) through a guide frame (2), the horizontal transfer gutter ( 4)
Connect the grain discharge funnel (5) so that the opening/closing discharge port (5θ) of A is directly in front of the grain falling port (2rυ) of the guide frame (2), and When discharging grains, the rotation of the rotary transfer spiral (3) is normally stopped, and when grain accumulation in the discharge funnel (5) exceeding a predetermined amount is detected, the rotary transfer spiral (3) is stopped. This is a structure of a grain discharge device in a grain dryer which is configured to rotate in an interlocking manner.

An embodiment of this invention will be described based on the drawings.

(6) is the frame of the dryer, which consists of a conditioning chamber, a drying chamber, and a grain collecting chamber in this order from the top. The grains supplied into the tempering chamber are exposed to hot air as they flow down the drying chamber and reach the τ grain collection chamber.

An elevator (1) is installed on the outside of the machine frame (6). The lower part of this elevator (1) is connected to the grain collection room, and the upper part is connected to the guide 1?
It communicates with the 't4* transfer gutter (4) via (2).

The horizontal transfer gutter (4) extends from the outside of the machine frame (6) to a device located at the upper center of the tempering chamber, and has a transfer spiral (3) inside to transfer grains horizontally ( b) It is structured so that it can be done.

A grain discharge funnel (5) is connected to the outside of the machine frame (6) of the lateral transfer gutter (4).

The opening/closing discharge port between the horizontal transfer gutter (4) and the discharge funnel (5)
5a) is positioned so as to look directly under the grain outlet (2i) of the guide frame (2). In addition, (7) is the support shaft of the base (
8) A rotatable on-off valve that opens and closes the discharge port (5a). Further, this on-off valve (7) is configured to be able to be opened and closed as desired outside the machine via a discharge lever (9) and an operating rod 00. 0]) is a spring beyond the dead center that switches and holds the on-off valve (7) in the open/closed position of the discharge port (5α).a2 is a transmission pulley provided at the outer end of the shaft 03 of the transfer spiral (3); A belt αQ is wrapped around the belt αQ so as to be interlocked with a transmission pulley aυ provided at the shaft end of an upper roller shaft α of the elevator (1) which is rotated appropriately by an external motor. This belt OQ is configured so that power can be turned on and off by means of a tension clutch αη. In other words, the swingable tension roller (1υ) is normally pressed against the belt αQK by a spring (1k) and is interlocked with the clutch αη "man", and is separated from the bell l- (16 by the operation of the solenoid α dipper) and is connected to the clutch (171r). The configuration is such that the power is turned off.

In addition, the solenoid 0 scoop is a limit switch OI which is connected and disconnected by the swinging of the above-mentioned discharge lever (9), and a discharge funnel (5).
) It is connected in series to a pressure switch (a) (b contact) which is located on the inner wall and is activated when it senses grain pressure above a predetermined level. Sweeping rod 0 () is connected to the discharge port (5) by the on-off valve (7).
When the operation lever (a) is pulled to "1 open"
9) acts on the limit switch θ and becomes -tl”ONJ, and the grains flow normally without accumulating more than a predetermined amount in the discharge funnel (5) and the pressure is below the predetermined value. When the pressure switch is on, the solenoid (to) is energized and the clutch (17) is turned to 1.
"cut".

On the other hand, the pressure switch handle senses that the pressure has exceeded a predetermined level due to accumulation of grains, and when the pressure becomes 0FFJ, the solenoid α8) is demagnetized and the clutch a″i) is turned on. In addition, when the on-off valve (9) closes the discharge port (5υ), the limit switch 0 becomes OFF regardless of whether the pressure switch is ON or OFF. ) is in a demagnetized state and 1 clutch 07) is "
"Enter".

Qυ is a hopper for loading grain, which can be communicated with the lower part of the elevator (1).

The action of the upper side will be explained.

When the grains to be dried are put into the grain charging hopper Q), they are lifted up by the elevator (1) and stored in the tempering chamber. As the grains flow through the drying room, they are exposed to hot air and reach the grain collection room. Furthermore, it is lifted up by the elevator (1), and sent to the tempering chamber again through the guide frame (2) and the horizontal transfer gutter (4), where it is slowly cooled.

As this process is repeated, when the moisture content reaches a predetermined value, it is discharged to the outside of the machine through the discharge funnel (5).

When performing circulation drying, the on-off valve (7) is the outlet (5).
If you pull the operating rod 00 and swing the discharge lever (9) one time, the on-off valve (7) integrated with this will swing to open the discharge port (5a) one time. Eggplant. For this reason, the dried grains lifted by the elevator (1) and put into the guide frame (2) are transferred from the grain drop opening (2u) to the horizontal transfer gutter (4).
) flow down to the outlet (5/l) at the bottom,
It is taken out of the machine through the discharge funnel (5). In addition, immediately after pulling the operating rod 00, the limit switch 09 is "ON".
Since the pressure switch holder remains "ON", the clutch Qη becomes "OFF" and the transfer spiral (3) is ejected.

Therefore, the grains flowing down from the guide frame (2) fall directly into the discharge port (5μ) (FIG. 5(a)).

Since the transfer spiral (3) is stopped to cut off the circulation transfer into the tempering chamber, the grains to be taken out are transferred to the transfer spiral (3).
), which reduces losses during transportation.

However, the amount lifted by the elevator (1) is the same as that of the discharge funnel (5).
If the discharge amount is large compared to the discharge amount from the discharge funnel (5)
The grains will accumulate in the funnel, and will eventually leak out and be deposited in the horizontal transfer gutter (4), but if more than a predetermined amount of grains accumulate in the discharge funnel (5), the pressure will be reduced. The crab isochi (e) turns the transfer spiral (3) again (Fig. 5 (b)) by putting the OFFJ and the Hiko clutch (17) into one. The inner grains are once circulated within the dryer and then discharged and dropped.

Incidentally, the grains taken out to the discharge funnel (5) are supplied to other processing steps such as a hulling device through a route.

This invention has the following technical effects because of the above configuration. In other words, the rotation of the rotating transfer spiral is stopped at the same time as the discharge port is opened when the grains are discharged after drying, so the grains introduced from the guide frame are not affected by the lateral transfer by the transfer spiral. It is possible to remove the grains without any movement, reducing losses due to transfer circulation, and if a predetermined amount of grains are accumulated in the discharge funnel and this is detected, the transfer spiral is rotated back, so that it can be removed unexpectedly. Even if grains accumulate on the horizontal transfer gutter, they can be circulated again and guided into the discharge funnel, eliminating the need for cleaning work after discharge and reducing the load on each rotating part. This can prevent unexpected abandonment.

In this embodiment, the pressure swing and the discharge funnel (5) may be constructed separately or integrally within the discharge funnel (5).

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a partially enlarged view of the peak, Fig. 6 is a sectional view of a part thereof, and Fig. 4 is an explanation of the clutch section. FIG. 5 shows action explanatory diagrams. In the figure, (1) is the elevator, (2) is the guide frame, (3) is the transfer spiral, (4) is the horizontal transfer gutter, (5) is the grain discharge funnel, (
20,) indicates the grain drop opening, (5) indicates the opening/closing discharge port, 07 indicates the (tension) clutch, α indicates the solenoid, a samurai bar mint switch, and the kanji indicate the pressure switch. Figure 1 Figure 2

Claims (1)

[Claims] In a grain dryer that dries grains while circulating them using an elevator or a horizontal transfer gutter connected to the elevator via a guide frame and having a rotating transfer spiral inside, the horizontal transfer gutter is provided with a grain discharge funnel. The opening/closing discharge port is connected to the guide frame so as to face the grain falling port of the guide frame, and when discharging grains from the opening/closing discharge port, the rotation of the rotating transfer spiral is normally stopped, and the discharge funnel A grain discharging device in a grain dryer, which is configured in an interlocked manner to rotate a rotational transfer spiral when detecting grain accumulation exceeding a predetermined amount inside the grain dryer.