JPH03143550A - Removing device for foreign matter in grain dryer - Google Patents

Abstract

PURPOSE:To provide a sieve sorter to the upper part of a dryer and to easily connect the sieve sorter to an elevator such as a thrower by providing the sieve sorter to the interval part between the elevator vertically erected to the outside of the frame of the dryer and the outer wall of this frame. CONSTITUTION:Unhulled rice introduced into a storage chamber 2 is passed through a drying chamber 3 part and dried and again returned to the storage chamber 2 by a circulating transfer device. In a grain dryer provided with this circulating transfer device, a sieve sorter 22 described hereunder is provided to the interval part between an elevator 5 vertically erected to the outside of the frame 1 of the dryer and the outer wall of this frame. The sieve sorter 22 separates and sorts ripe paddy from foreign matters having diameter larger than this ripe paddy. The supply side of the sieve sorter 22 is provided to a discharge port 19 of unhulled rice finished in drying of the abovementioned dryer. The discharge side of the sieve sorter 22 is opened to the outside of the device and also a grain collection part 28 for collecting ripe paddy is connected to a thrower 29 for discharge to the outside of the device. In other words, because of a type wherein the sieve sorter is provided to the interval part between the outer wall part of the dryer and the elevator, the sieve sorter can be set to the upper part of the dryer and is easily connected to the elevator such as a thrower.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a foreign matter removal device in a grain dryer.

[Prior Art and Problems to be Solved by the Invention] Rice grains affected by so-called rice mildew and other large-diameter foreign substances are difficult to remove during drying and require special removal equipment.

For this reason, a system has been developed and put into practical use that incorporates a coarse sorting device using a rotating sorting cylinder or a swinging sorting board into the dryer wall, etc., and captures a portion of the paddy during any of the loading, drying, and discharge processes to remove foreign matter. It has come to be

By the way, it is advantageous to remove the rice malt diseased grains while taking out the dried paddy outside the machine, but conventionally the coarse sorting device was located at a low position, so it was difficult to connect it with a lifting device such as a thrower. was difficult or required high-performance lifting equipment.

[Means to solve the problem]

This invention attempts to eliminate the above-mentioned drawbacks, and provides a grain dryer equipped with a W412 transfer device that allows the paddy stuffed into the storage chamber 2 to pass through 3 parts of the drying chamber, be dried, and return to the storage chamber 2 again. A coarse sorting device 22 for separating and sorting paddy and foreign matter having a larger diameter than the sized paddy is installed in the space between the elevator 5 that stands outside the machine frame 1 of the dryer and the outer wall of this machine frame, and the dryer (J(
A structure of a foreign matter removal device in a grain dryer that looks toward the ship side, the discharge side of the sorting device 22 is open to the outside of the machine, and a grain collecting section 28 for collecting sorted rice is connected to a thrower 29 for discharging outside the machine. shall be.

[Operation and effect of the invention]

Since the coarse sorting device is installed in the space between the outside of the dryer and the elevator, it can be installed at the top of the dryer and can be easily connected to a lifting device such as a thrower.

〔Example〕

An embodiment of the present invention will be briefly described with reference to the drawings.

1 is the machine frame of the grain dryer, and inside this machine frame, a storage chamber 2. A drying room 3 and a grain collecting room 4 are installed vertically, and an elevator 5 is installed outside the machine frame 1 to lift up and return the grains collected on one side of the grain collecting room 4 to a storage room 2.

The drying chamber 3 has a grain flow passage 9.10 formed between a hot air chamber 6 communicating with a burner cylinder having a burner (not shown) and an exhaust chamber 8 communicating with a fan cylinder having a suction fan 7. A delivery valve 1 provided at the bottom of each downstream passage 9, 10
The structure is such that hot air is blown onto the grains flowing down at predetermined intervals through a constant rotation of 1.12 to dry them.

The elevator 5 has a structure in which a packet belt 13 is wound therein, and is configured to be able to scoop up dry grains transferred to one side by a lower transfer spiral 14 installed horizontally in the 4,000 part grain collection room and transfer them to the upper part. . The grains scooped up and thrown by the upper part of the elevator ta5 are guided to the starting end side of a transfer gutter 16 provided with a two-part transfer spiral 15. Incidentally, the grains horizontally transferred by the transfer spiral 15 are guided to a rotating diffusion plate 17 disposed at the upper center of the storage chamber 2, and are diffused and dropped into the storage chamber 2.

18 is a grain loading hopper connected to the lower part of the elevator 5.

On the supply start end side of the upper transfer spiral gutter 16, an upper discharge port 9 is provided.
It is configured to be able to be opened and closed as desired by an on-off valve 20, and has a guide tube 21 connected thereto. This guide cylinder 21 is used when discharging the paddy after drying is completed, and also communicates with a coarse sorting device 22 which will be described in detail below.

The coarse sorting device 22 is removably attached between the side of the dryer frame and the elevator 5 via appropriate attachment means, so that the paddy from the inlet funnel 23 that receives the guide tube 21 is placed in a slightly inclined position. The paddy is rotated and supplied to a rotary sorting cylinder 24 which has slit holes of an appropriate width formed on its outer periphery, and the paddy supplied to the starting end side of this rotary sorting cylinder 24 is prevented from leaking through the slit holes in the process of moving to the terminal side. The structure is such that large-diameter paddy with rice malt disease cannot leak out, reaches the terminal end, and is discharged outside the machine through the discharge pipe 25. 26 is a drive motor, which rotates the rotating sorting cylinder 2.
4 is configured to directly transmit power to the shaft 27 supporting the shaft 27.

In addition, 28 is the collection that receives the above paddy sorting! 9 gutter, rotating sorting cylinder 2
The entire length of the grain collecting trough 28 is designed to be able to receive rice spillage, and below the grain collecting trough 28, a horizontal feed spiral to the grain frying thrower 29 is projected on the 130-man lilo side.

An on-off switching valve 31 is provided in the middle of the grain collecting trough 28, and the switching operation of this switching valve 31 moves the vi paddy into the return pipe 32.
It is configured so that it can be discharged to the side. The lower part of the reduction cylinder 32 is located so as to look into the charging hopper 18.

In the embodiment shown in FIGS. 2 and 3, the grain thrower 29 is provided on the side of the dryer frame, but the
In the embodiment shown in FIG. 5, it is provided to be located in front of the dryer frame. In this second embodiment, the grain collection gutter 28 is installed with the right and left directions reversed, thereby creating a tank that can be seen into the entrance of the lateral feed spiral gutter 30 to the thrower 29 provided on the front side of the machine frame.

33 is a moisture meter placed in the middle of the lift 1!15,
The structure is such that moisture can be detected by receiving each grain of rice overflowing from the conveyor packet.

34 is a control box containing a microcomputer arithmetic control unit (hereinafter referred to as CPU) that performs drying control, and the board has switches for loading, drying, discharging, and stopping, as well as information such as loading amount and finished moisture value. Setting switches and the like are provided.

The action of the upper side will be explained.

A fixed amount of paddy stringed from the stringing hopper 18 is stored in the storage chamber 2. When carrying out zero-current drying work, the setting operation of the stringing amount setting switch and the outside temperature are controlled by turning on the drying switch. The hot air temperature is determined based on the detected value, and drying is started.

During the drying process, the moisture content of the rice grains is detected by a moisture meter at predetermined intervals, and when the detected moisture reaches a predetermined finished moisture value, drying ends.

At approximately the same time as the above drying process starts, or after drying to the desired moisture level, the removal process of foreign substances such as rice mildew diseased paddy is started.
1 at the position A in Figure 2.4.

In this way, when the drive motor 26 of the coarse sorting device 22 starts to operate, the rice grains are sequentially fed into the sorting tube 24 through the two guide tubes and subjected to the sorting action of the sorting tube 24.

Due to the rotation of the rotary sorting tube 24, the paddy moves toward the terminal end of the sorting tube 24, so the sorted paddy leaks through the slit hole, and foreign matter such as rice mildew diseased paddy, which has a large diameter, reaches the terminal end and passes through the discharge tube. 25 and then taken out of the aircraft. The above-mentioned paddy is collected in the grain collecting trough 28, returned to the loading hopper 18 via the return tube 32, and lifted up again by the elevator 5 together with the paddy being circulated.

At this time, although the discharge port 19 is in an open state, most of the rice grains are subjected to the transfer action of the transfer spiral 15, and most of the arranged rice grains are also transferred into the storage chamber 2. Although the amount of grain sorted by the coarse sorting device 22 is constant, the paddy is supplied one after another, but the excess remains in the supply path, that is, the guide tube 21 and waits, and is transferred to the upper transfer spiral 15. Most of the supplied paddy will be transferred to the storage chamber 2 side.

Further, when performing the above foreign matter sorting process in the discharge process, the switching valve 31 is set at the opening position in the figure.

By doing this, the rice grains collected by the grain collector @ 28 are discharged to the thrower 29 side via the horizontal feed spiral trough 30.
The lifting action of the thrower 29 causes the waste to be discharged to a high position.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front sectional view, Fig. 2 is a partially cutaway front view, Fig. 3 is a side view of a part thereof, and Fig. 4 is another embodiment. A partially broken front view showing the
FIG. 5 is a side view thereof. In the figure, 2 is a storage chamber, 3 is a drying room, and 5 is an elevator. 5 is an upper transfer spiral, 16 is a transfer gutter, 19 is a discharge port, 2
0 is an on-off valve, 21 is a guide cylinder, 22 is a coarse sorting device, 24
28 is a sorting tube, 28 is a collecting gutter, 29 is a grain thrower, 30 is a spiral gutter, 31 is an on-off switching valve, and 32 is a reducing tube.

Claims (1)

[Claims] (1) A grain dryer that has a circulation transfer device that allows the paddy that is placed in the storage chamber 2 to pass through three drying chambers, dry it, and return it to the storage chamber 2 again, is equipped with a grain dryer that has a arranging system and a diameter larger than that of the arranging paddy. A coarse sorting device 22 for separating and sorting out foreign substances is installed in the space between the elevator 5 that stands outside the machine frame 1 of the dryer and the outer wall of this machine frame, and is installed at the discharge port 19 of the dried paddy of the dryer. A grain dryer in which the supply side of the coarse sorting device 22 is visible, the discharge side of the sorting device 22 is open to the outside, and a grain collecting section 28 for collecting sorted rice is connected to a thrower 29 for discharging outside the machine. foreign matter removal device.