JPS63300921A - Feed capacity detector for grain drying machine - Google Patents

Abstract

PURPOSE:To find accurate feed capacity corresponding to the kind of grains and to perform accurate drying control by putting grains to be measured in a sample container of specific capacity and providing a sample weight measuring means which measures its weight. CONSTITUTION:When grains to be dried are supplied from a feed hopper, the grains are fed into a storage tank 2 through a grain elevating machine 5 and a conveyance flume 14 with an upper conveyance spiral 13. At this time, the sample container 32 is put in the tank 2 and then filled with grains during the feeding operation. Then the container 32 is taken out, an over part is removed to make an adjustment to specific capacity, and the weight is measured by a sample weight measuring instrument. A CPU calculates the weight per unit capacity from the weight and the capacity of the container 32 and stores it. A weight detector, on the other hand, detects the total weight of the grains fed into the tank 2 and the CPU inputs it to calculate the feed capacity of the grains from the weight per unit capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a charging capacity detection device in a grain dryer.

[Prior Art and Problems to be Solved by the Invention] When starting grain drying, it is necessary to set the charging capacity 811 in order to set the burner hot air temperature, etc.

By the way, conventionally, the filling capacity (volume) was confirmed without visually checking through the inspection windows installed above and below the machine wall of the storage tank. However, it has the disadvantage that it is difficult to confirm in a dark place and lacks accuracy.

In addition, there is a form in which a weighing scale is installed at the bottom of the machine to detect the amount of loaded grain by weight, but the drawback is that the capacity varies depending on the type of grain.

[Means for Solving the Problems] The present invention attempts to solve the above-mentioned drawbacks, and includes a sample container 32 formed to have a predetermined capacity. A sample weight measuring means for accommodating fixed grain and measuring its weight, a pitching weight measuring means for measuring the pitched weight in the storage tank, and a pitched volume is calculated from these sample weights and pitched weights. A charging capacity detecting device in a grain dryer is configured to include a calculation means.

[Operations and Effects of the Invention] In parallel with the grain filling operation into the storage tank, the same grain is also filled into the sample container. The sample weight measuring means measures the weight of the grain in the sample container, and the weight per unit volume of the grain is determined from the previously known volume of the sample container. This weight information is input to the loading capacity calculation means. On the other hand, the total weight of the grains loaded into the storage tank is detected by the loaded weight measuring means, and the information is similarly input to the loaded capacity calculating means. Based on this information, the charging capacity calculation means converts the charging amount based on the volume of grain actually loaded into the storage tank.

Therefore, accurate loading capacity is required depending on the grain type.
Highly accurate drying control becomes possible.

[Example code] An embodiment of this invention will be described based on the drawings.

Reference numeral 1 designates a frame of a grain dryer. Inside this machine frame, a storage tank 2, a drying chamber 3, and a grain collection chamber 4 are installed vertically from the top, and a part of the grain collection chamber 4 is installed outside the machine frame 1. Storage tank 2 for grain collected on the side
A grain lifting machine 5 is installed to raise and return the grain. In addition, the drying room 3 is
A grain flow passage 10.10 is formed between a hot air chamber 7 communicating with a burner body having a burner 6 and an exhaust chamber 9 communicating with a fan body having a suction fan 8.
By constant rotation of a feed valve 11.11 provided at the bottom of the dryer, the grains flowing down in predetermined amounts are exposed to hot air and dried.

The grain lifting machine 5 has a structure in which a packet belt is wound inside, and is configured to be able to scoop up dry grains transferred to one side by a lower transfer spiral 12 installed horizontally at the lower part of the grain collection chamber 4 and transfer them to the upper part. . The grain scooped up by the grain lifting machine 5 and thrown at the upper part is guided to the starting end side of a transfer trough 14 provided with an upper transfer spiral 13. Incidentally, the grains transferred horizontally by the transfer spiral 13 are transferred to a rotating diffusion plate 1 disposed at the upper center of the storage tank 2.
5 and diffused and dropped into the storage tank 2.

16 is a stake hopper.

Figure 3 shows a block circuit diagram, in which the arithmetic control unit (CPU)
17. Drying control is performed by a microcomputer configured with memory and the like. That is, this CPU17 has
Operation switches for loading, drying, discharging, stopping, etc. 18.1
The ON and OFF signals of 9, 2o, and 21, the setting signal of the stop moisture value setting switch 22, the signal from the abnormality sensor 23, or each output signal from the hot air temperature sensor 24, moisture meter 25, etc. are input. On the other hand, burner 6 drive system signals for the first ignition heater 26, fuel pump 27, fuel flow control valve 28, etc. are output. 29 is a memory, and 30 is an input/output interface.

31,. Reference numeral 31 denotes weight detectors such as load cells, which are disposed at the four corners of the lower part of the machine body and can detect the total weight of grain loaded, and this weight information is input to the CPU 17.

32 is a sample container formed to have a fixed capacity, for example, 500 cc, and is removably installed outside the storage tank 2 at a suitable location, and has a two-part opening that can be opened and closed when attached to the storage tank 2 to receive the wafer grain. is provided so that it can be inserted. The weight of the removed sample container 32 is measured by placing it on an external sample weight measuring device 33, which is connected to the CPU 17 and the measurement results are input as sample weight information.

The CPU 17 also has the following functions. That is, (1) the weight per unit volume of the grain is calculated from the sample weight information and the volume of the sample container 32 previously stored in the memory, and is stored. (2) Calculate the tensioning capacity from the information from the tensioning weight detectors 3 (2) and 31 and the results of (2) above. ■Set the hot air temperature of the burner based on the relevant loading capacity, grain type, outside temperature, etc. etc.

Incidentally, the above-mentioned weight per unit volume, loading weight, loading capacity, etc. can be displayed alternately on the display section 34.

In addition, 35 is a motor for moving each room.

The action of the upper side will be explained.

When the loading switch 18 is turned ON and grain to be dried is supplied from the loading hopper 16, the grain is loaded into the storage tank 2 via the grain lifting machine 5 and the transfer gutter 14 having the upper transfer spiral 13. At this time, if the sample container 32 is installed in the storage tank 2, it will be filled with grains during the pitching operation. Next, this sample container 32 is taken out and the overfilled portion is removed to adjust the volume to a predetermined value, and then the sample weight measuring device 33 is used.
Place it on the table and measure its weight. C:PUl 7 calculates and stores the weight per unit volume ρ=Ws/Vs from this weight Ws and the volume Vs of the sample container 32. On the other hand, the weight detectors 31 and 31 detect the total weight Wt of the grains loaded into the storage tank 2, and the CPU 17 takes this in and calculates the loading capacity Vt of the grains from the above weight per unit volume. Calculate (Vt=Wt/ρ).

Next, set the stop moisture value and turn on the drying switch 29.
Then, the temperature of the burner 6 is set based on the filling capacity, outside air temperature, etc. calculated as described above, and the drying work is started. During the drying operation, the grains are dried by being exposed to hot air while flowing down the drying chamber 3, and then transferred to the storage tank 2 for reduction and tempering. These steps are repeated and when a predetermined stop moisture value is reached, the drying operation is completed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall front view, FIG. 2 is a sectional view thereof, and FIG. 3 is a block circuit diagram. In the figure, 1 is a machine frame, 2 is a storage tank, 3 is a drying room, 4 is a grain collecting room, 5 is a grain lifting machine, 6 is a burner, 8 is a suction fan, 17
is the CPU, and 31.31 is the weight detector. 32 is a sample container, and 33 is a sample weight measuring device. ,! =2M

Claims (1)

[Claims] A sample weight measuring means for storing the grain to be measured in a sample container 32 formed to have a predetermined capacity and measuring its weight; and a loaded weight measuring means for measuring the loaded weight in the storage tank;
A charging capacity detection device for a grain dryer, comprising a calculation means for calculating the loading capacity from the sample weight and the loading weight.