JPS6130190B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain drying device, and more specifically,
This invention relates to improvements to continuous flow grain drying equipment.

Conventionally, when using a continuous flow type grain drying device, for example,
Published by the Materials Department, Country Elevator Guide, Vol.
As shown in the process diagram (page 64), each dryer is always equipped with multiple tanks (silos), and the grain is dried by repeating the cycle from dryer to tank to dryer. In addition, before putting the received grain into the dryer, a raw material tank is installed to temporarily store it, and after a certain amount is secured, it is transferred to the drying process.

However, in this method of temporarily storing the grain in the raw material tank before transferring it to the grain drying process, there is a problem that the grain cannot be stored in the raw material tank for a long time because if the grain has a high moisture content, it deteriorates quickly.

Therefore, in order to improve this point, it is possible to adopt a process of receiving grain - drying machine - raw material tank (bottle), but in this case, the receiving of grain is brought in by each farmer, so the cargo can be transported smoothly. Didn't go in,
Drying time is often interrupted. If grains are received at random in this way, the dryer may become empty, which not only prevents efficient drying but also causes energy loss due to drying air blowing through the dryer. Another problem is that if the grain is stopped from being discharged from the dryer, only the grain in the dryer will be dried for a long time, and the moisture content will be abnormally different from that of other grains, which will hinder the next operation.

The present invention was made in order to solve such conventional problems, and it is possible to effectively improve the continuous flow grain dryer used in facilities such as so-called rice centers even in the receiving system where grain flows intermittently. It is an object of the present invention to provide a grain drying device that can be operated, and can significantly increase drying efficiency by preventing drying air from blowing through the dryer due to the stoppage of the flow of grain in the previous process in the system. There is.

The grain drying device of the present invention that achieves the above object has the following features:
A louver-shaped bottom wall that slopes from the grain input port toward the grain discharge port is provided in a hollow container having a drying air discharge port formed on the top surface, a grain input port at one end, and a grain discharge port at the other end. , a hot air generator including a burner and a blower are disposed below the louvered bottom wall in the hollow container, a grain input tank is connected to the grain input port, and a discharge valve is provided at the grain discharge port; An upper grain level gauge and a lower grain level gauge are disposed in the grain input tank, the hot air generator is stopped in conjunction with the lower grain level gauge, and the discharge valve is closed at the same time, and after a certain period of time has elapsed, the The blower is stopped, and the blower is driven at the same time as the exhaust valve is opened in conjunction with the upper level meter, and after a certain period of time has elapsed, the hot air generator is driven. It is.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The main parts of the grain drying apparatus of the present invention are shown in FIG. A louver-shaped bottom wall 2 is provided at an angle inside the device main body 1, which is a hollow container.The louver-shaped bottom wall 2 separates the inside of the device main body 1 into a drying chamber 1a and a hot air generation chamber 1b. has been done. A grain inlet 3 is provided at the upper end of the drying chamber 1a, and a grain outlet 4 is provided at the lower end of the drying chamber 1a. A grain input tank 5 is connected to the grain input port 3, and an upper level meter A is connected to the grain input tank 5.
and a lower level meter B are provided. and,
The grain input port 3 is provided with an input valve 6, and the grain discharge port 4 is provided with a discharge valve 7.

By rotating the input valve 6, the grains in the tank 5 fall onto the louvered bottom wall 2, flow down the bottom wall 2, and are discharged from the grain outlet 4 by the discharge valve 7. However, in the drying chamber 1a, rotating bodies 8, 9, and 10 are arranged along the grain flow path to help the grain flow down.
1c indicates a drying air outlet opened on the top surface of the device 1.

On the other hand, the hot air generation chamber 1 below the louvered bottom wall 2
A burner 11 and an air blower 12 are arranged inside b, and the air heated by the burner 11 is passed through the air blower 12.
Then, it is fed into the drying chamber 1a through the louvered bottom wall 2. In the figure, arrows indicate the flow direction of the drying hot air.

FIG. 1 shows the dryer C of the present invention incorporated into the receiving process of a standard so-called rice center. That is, 13 is a receiving hopper for receiving grain brought in by each farmer,
14 is a conveyor for conveying the received grain to the next process. 15 is a vertical elevator, which allows sorting machine 1 to remove impurities from grains.
Grain can be transferred to 6. 17 is a vertical elevator, by which the grain is conveyed to a weighing machine 18, which measures the weight brought in by each farmer, and in the subsequent process, the grains of each farmer are pooled. , dried.

That is, the grains weighed by the weighing machine 18 are charged into the grain charging tank 5 by the vertical elevator 19. When the amount of grain in the tank 5 increases and the upper level meter A operates, the input valve 6 rotates and the grain falls onto the bottom wall 2, where it is dried with hot air while flowing down along the bottom wall 2. 7, the discharge port 4 reaches the vertical elevator 20 and is stored in the storage tank 21.

Then, when the grain in the tank 5 gradually decreases and the lower level meter B operates, the operation of the discharge valve 7 and the burner 11 is automatically stopped, and after a certain period of time, the blower 12 is also stopped. After that, the next load of grain is put into the receiving hopper 13, and when the upper level meter A is activated, the discharge valve 7, the burner 11,
The blower 12 resumes driving, and efficient operation is resumed so that the flow of grain within the device 1 is not interrupted. A sequence diagram at this time is shown in FIG.

As explained above, the grain drying device of the present invention has a drying air outlet formed in the upper surface, a grain inlet in one end, and a grain outlet in the other end in a hollow container. A louver-shaped bottom wall is provided that slopes from the louver-shaped bottom wall toward the grain discharge port, a hot air generator including a burner and a blower are arranged below the louver-shaped bottom wall in the hollow container, and a grain input tank is installed at the grain input port. At the same time, a discharge valve is provided at the grain discharge port, and an upper grain level gauge and a lower grain level gauge are disposed in the grain input tank, and the hot air generator is stopped simultaneously with the lower level gauge. The exhaust valve is closed, and then after a certain period of time, the blower is stopped, and the exhaust valve is opened in conjunction with the upper level meter, and at the same time the blower is driven, and after a certain period of time, the hot air generator is activated. Since the structure is such that when the flow of grain in the previous process stops, the flow of grain in the drying device is also stopped, as well as air blowing and heating, and the flow of grain in the previous process is restored. Sometimes, by restarting the flow of grain in the drying device, drying efficiency can be significantly increased by preventing drying air from blowing through the drying device due to the stoppage of grain flow in the previous step. Therefore, the grain drying device of the present invention has the following features:
It can be operated effectively even in a receiving system where grain flows intermittently, and it is possible to efficiently dry grain by preventing energy loss due to drying wind blowing through. In addition, the grain input tank is equipped with an upper grain level gauge and a lower grain level gauge, and in conjunction with these, the hot air generator, blower, and discharge valve are controlled. Even if the capacity is not large enough, the grain on the louvered bottom wall inside the device will not be interrupted, drying air will not blow through, and drying work can be carried out efficiently. Furthermore, there is an advantage that the storage capacity of the subsequent storage tank is increased by the amount of moisture reduced by drying the grain in the grain drying apparatus of the present invention, and a large amount of grain can be stored in the storage tank.

[Brief explanation of the drawing]

Fig. 1 is a process diagram of the device of the present invention incorporated into the receiving process of a normal rice center, Fig. 2 is a sequence diagram, Fig. 3 is a sectional view of the device of the present invention, and Fig. 4 is a process diagram of the conventional rice center. It is a process diagram. 1... Apparatus body, 2... Louvered bottom wall, 3... Grain input port, 4... Grain discharge port, 5... Grain input tank,
7...Discharge valve, 11...Burner, 12...Blower, 1C...Drying air outlet, A...Upper level meter,
B...Lower level meter.

Claims (1)

[Claims] 1. A louver-shaped bottom wall inclined from the grain input port to the grain discharge port is installed in a hollow container having a drying air discharge port formed on the top surface, a grain input port formed at one end, and a grain discharge port formed at the other end. a hot air generator including a burner and a blower are disposed below the louvered bottom wall in the hollow container, a grain input tank is connected to the grain input port, and a discharge valve is provided at the grain discharge port; An upper grain level gauge and a lower grain level gauge are disposed in the grain input tank, the hot air generator is stopped in conjunction with the lower grain level gauge, and the discharge valve is closed at the same time, and after a certain period of time has elapsed, the The grain drying device comprises: stopping the blower, opening the discharge valve in conjunction with the upper level meter, driving the blower at the same time, and then driving the hot air generator after a certain period of time has elapsed.