JPS5920953B2 - Abnormalities in circulating grain drying equipment and hot air temperature/moisture content display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circulation humidity control type drying apparatus used for drying rice and wheat among grains.

Humidity control drying is a method in which only the outer skin of unhulled rice is quickly dried using high-temperature hot air (35°C to 80°C), this unhulled rice is stored in a humidity control tank, and the dry outer skin absorbs the moisture inside. (For example, Special Publication No. 50-1946
Publication No. 2).

The above drying method can also be used for wheat.

In this drying method, the temperature of the drying hot air is raised to the limit that causes cracking of the hulls of the unhulled rice, and then the humidity is controlled for a certain period of time, so if even the slightest abnormality occurs, the rice will become cracked.

In addition, since the number of circulations is small, such as a few times, uneven drying will occur if the circulation is not performed accurately.

Therefore, it is possible to install a detector in a part where it is recognized that an abnormality will occur, and to notify the abnormality by sounding a buzzer or flashing an indicator light when the detector detects the abnormality. Only by sounding the buzzer, it is not possible to quickly discover abnormalities, and once the power is turned off and operation is stopped, it is difficult to find abnormalities.

However, with the configuration shown below, it is possible to accurately display the operation of the abnormality detectors installed in each part, so that it is possible to appropriately handle the occurrence of an abnormality, and it is also possible to prevent drying. The temperature and moisture content of the accompanying hot air can be known moment by moment, allowing for reliable drying.

In other words, in a circulating grain dryer, the temperature of the hot air is accurately determined, a detector such as a thermistor that can detect the temperature is installed in the hot air supply section, and the air volume is also accurately determined. , an airflow detector that can measure the airflow is installed in the air passage, and since the inside of the elevator may become clogged with grain, a detector such as a limit switch that can detect this condition is installed, and if used continuously, it may malfunction and cause a fire. Therefore, a detector to detect the activation of the fire extinguisher is installed near the fire extinguisher, and other detectors that can confirm abnormalities are installed in various places, but all of the detectors are equipped with digital display devices. 1. It should be possible to display numbers such as 2.3 or symbols such as A, B, C, etc.

In other words, if the elevator malfunctions due to clogging with paddy, etc., the detector is configured to display the number "l" on the digital display, and the hot air temperature sensor is configured to display the digital display if the hot air is higher than expected. The number ``2'' will be displayed on the device, and if the temperature is lower than expected, the number ``3'' will be displayed.

Therefore, for example, if the number "3" is displayed on the digital display, it indicates that the hot air temperature is abnormally low.

A measuring device is attached outside the detector to the area through which the hot air passes, and the measuring device is connected to another digital display device to display abnormalities separately. , the hot air temperature is constantly displayed digitally.

Similarly, a moisture content measuring device is installed and configured so that the moisture content is always displayed digitally.

With the above configuration, if the fault display section of the digital display device displays, for example, "1", it is known that the elevator is abnormal as described above, and the moisture content display section of the digital display device displays "1". If "45℃" is displayed, it is confirmed that the hot air temperature at that time is "45℃" and it is working properly, and "18.0%" is displayed on the moisture content display. If it is, you will instantly know that 4% more needs to be dried.

In the case of each digital display as described above, it is not necessarily necessary to provide three independent digital display sections, and if the display circuit is made somewhat complicated, one display section can be used.

In other words, there is only one digital display, and at all times,
Only the hot air temperature is displayed, and a changeover switch is installed in that area. When the changeover switch is changed, the hot air display is cut off and the moisture content is displayed. When an abnormal circuit is activated, only the abnormality is displayed. Configure it as follows.

Therefore, it is possible to display on one display unit.

Furthermore, the digital display section may be configured to have two display sections, a fault display section and a hot air/moisture content display section, with the fault display section being dedicated to faults, and hot air and water content displayed alternately at all times.

To explain the embodiment, reference numeral 1 denotes a humidity control tank, which is formed in a flow-down type, and a flow-down type drying chamber 2 is provided at the bottom of the humidity control tank 1.
are placed in communication.

The drying chamber 2 is configured so that only the outer skin of the unhulled rice is mainly dried by receiving hot air at about 35° C. to 80° C. while the unhulled rice is flowing down.

3 is a furnace that supplies hot air to the drying chamber 2.

An elevator 4 is provided on the side of the humidity control tank 1 and the drying chamber 2 for returning the skin-dried unhulled rice discharged from the drying chamber 2 to the humidity control tank 1 in the upper part.

Thus, for example, the lower inlet pipe 5 of the elevator 4
Detectors 7 for detecting abnormal conditions are installed inside the furnace 3, inside the hot air supply chamber 6 from the furnace 3, or at other appropriate locations, but the detector of the present invention simply detects abnormal conditions. It is a device that displays a defined digital symbol rather than a physical object.

That is, for example, if the amount of grain flowing into the elevator 4 abnormally increases and a clogging phenomenon occurs, a No. 1 detector γ (for example, When the No. 1 detector 7 detects an abnormality, a number or symbol such as "1" or rAJ is displayed on the digital display device 8 provided at an arbitrary position of the device.

Therefore, if the number "1" is displayed on the digital display device 8, it means that the elevator 4 is jammed.

Further, for example, a detector 7 (for example, a thermistor) that senses temperatures higher than or lower than the set temperature is installed in the hot air supply chamber 6, and the detector 7, which is the thermistor, is used to display the digital display device "2" or rBJ. It is for display.

In this way, if necessary, a detector is installed to detect abnormalities, and the detector 7 displays "4", "5", "6", etc. on the digital display device 8 installed at any position on the aircraft. .

Therefore, in the hot air supply chamber 6, in addition to the vine detector 7 that detects conditions higher or lower than the set temperature, a vine measuring device 9 is installed to measure the hot air temperature, and the measuring device 9 is a separate digital device. The display device 8' is connected to display the hot air temperature digitally at all times, and inside the humidity control tank 1 is a measuring device 10 that compresses a part of the grains flowing down and measures the moisture content.
The measuring device 10 is further coupled for digital display to a further digital display device.

Fig. 4 A shows two ports, C shows digital display devices 8, 8',
The state displayed on Ff is shown.

FIG. 5 shows a cautionary table 11 to be attached near the display device 8. The one shown in FIG. A measuring cylinder 12 having one electrode plate 15 is arranged at the bottom thereof, and a sliding rod 1 that can freely move in and out from the side of the measuring cylinder 12 is provided.
3, a polar plate 16 forming a pair with the polar plate 15 is formed at the tip of the sliding rod 13, and the measurement is carried out by a motor 14.

The present invention has the above-described configuration, and after filling both the drying chamber 2 and the humidity control tank 1 with unhulled rice using the elevator 4, the furnace 3 is ignited and hot air is supplied. While flowing down, the outer skin of the unhulled rice is dried and flows into the lower part of the elevator 4, ascends inside the elevator 4, and is circulated in the humidity control tank 1 for 1 to 2 hours. While flowing down, the dry epidermis absorbs the internal moisture, and this
Drying is completed by repeating ~6 times.

During this time, if the circulating unhulled rice becomes clogged at the bottom of the elevator 4, the detector 1 attached to the inlet tube 5 that displays "1" will detect this and send a signal to that effect to the digital display device 8. ``1'' is displayed on the display device 8.

In such a case, it can be seen from FIG. 5 that the lower part of the elevator is clogged with paddy, so that countermeasures can be taken quickly and reliably.

Further, if the hot air temperature in the hot air supply chamber 6 becomes higher than the set temperature, the detector 7 in the hot air supply chamber 6 sends a signal to that effect to the digital display device 8, and displays "2" on the display device 8. This clearly indicates that the hot air is abnormally high in temperature.

According to the present invention, a hot air temperature measuring device 9 is installed in the hot air supply chamber 6 in addition to the detector 7, so that the temperature is constantly measured and the temperature is displayed on the digital display device 8. ', and the moisture content of the grain measured by the moisture measuring device 10 is digitally displayed on the digital display device 8.

According to the present invention, a vine detector for detecting an abnormality is installed at a plurality of optional locations of a circulating grain drying device, a digital display device is installed at an arbitrary position of the drying device, and the detectors and the digital display device are connected in a related manner. Since the detected failure location is replaced with a number or symbol and displayed, it is not only possible to easily and clearly notify the failure location, but also allows for moisture measurement, especially when measuring moisture intermittently. A device 10 and a hot air temperature measuring device 9 are provided, and the measuring devices 9 and 10 are connected to a digital display device so that the failure location, hot air temperature, and moisture content are all displayed digitally, making handling even easier. It has features that make it easy.

[Brief explanation of drawings]

Figure 1 is an overall side view, Figure 2 is an overall front view, and Figure 3 is an A.
-A sectional view, Figure 4 is a digital display device, Figure 5 is a diagram showing the same content, Figure 6 is an example wiring diagram of a digital circuit,
FIG. 7 is a longitudinal side view of the moisture measuring device. Explanation of symbols, 1... Humidity control tank, 2... Drying room, 3
...Furnace, 4...Elevator, 5...Inflow pipe, 6...
・Hot air supply device, 7...Detector, 8, 8', 8"-・
・Digital display device, 9...Temperature measurement device, 10・
... Moisture measuring device, 11... Precautions table, 12...
Measuring tube, 13...Sliding rod, 14...Motor, 15
... Pole plate, 16... Pole plate, 17... Supply hopper.

Claims (1)

[Claims] 1. Attach a detector capable of detecting an abnormality at any plurality of locations of a circulating grain drying device, install a digital display device at any location of the drying device, and connect the detector and the digital display device in a related manner. The drying device is configured to digitally display the failure location by replacing it with numbers or symbols, and the drying device is equipped with a moisture content measuring device and a hot air temperature measuring device, and the measuring device and the digital display device are connected in relation to each other. Abnormality and hot air temperature/moisture content display device in connected circulating grain drying equipment.