JPH0683791B2 - Moisture detector for test dryer for grain - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is mainly applied to rice, such as wheat, and is intended for use as a cargo receiving unit.
The present invention relates to a grain test dryer in a grain co-drying facility such as a rice center, a country elevator, and a dry store, which is composed of a drying section, a storage section, and a preparation and shipping section.

"Prior art" A commonly used test dryer puts a lot of sample paddy in each of a plurality of storage shelves placed in a drying chamber,
When it is confirmed that the water content of the sample paddy of the rod has reached an appropriate state after a certain drying time, the sample paddy is taken out from the storage rack each time.

“Problems to be Solved by the Invention” With such a conventional means, not only the sample paddy is taken in and out of the test dryer, but also the moisture measurement is artificially performed each time, so that it requires manpower. There was a problem that it was extremely inefficient and lacked in accuracy.

[Means for Solving the Problems] Therefore, the present invention relates to a grain transport mechanism for storing sample grains in a divided container and circulatingly moving them in a drying chamber, and moisture detection for measuring the moisture content of the sample grains. A mechanism and a grain discharge mechanism for forcibly discharging the sample grain outside the drying chamber when the water content falls below a predetermined level, and when the container reaches the moisture detection mechanism by the circulation movement of the grain transfer mechanism. And a moisture sensor for detecting the water content of the sample grain in a state where the sample grain of the container is separated from other sample grains.

[Operation] Therefore, according to the present invention, the moisture content in the sample grain is detected by the moisture detection mechanism by the circulation movement of the sample grain by the grain transport mechanism, and the moisture content in the sample grain is not more than a predetermined value. When it becomes, the grain discharging mechanism discharges the sample grain outside the drying chamber, and it is possible to easily automate the series of operations, and not only the test dryer,
It is possible to save labor in the entire drying facility, and to simplify the moisture sensor structure of the moisture detection mechanism so that its function and sample grain movement can be easily interlocked. The released water can properly detect the contained water.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
The figure is a cross-sectional explanatory view of the test dryer, and Fig. 2 is an explanatory view of the entire facility. Sampled paddy is taken out from the cargo receiving and weighing section (1) and (2) for drying and voluntary inspection.
A load receiving and weighing machine (3) that puts raw rice into each loading port and weighs this, and a conveyor (4) for the raw rice from the weighing machine (3).
A storage tank (6) which is carried in and pooled by (5), a weighing tank (7) for measuring the weight of raw paddy from the storage tank (6), and a rough for removing straw debris in the paddy from the conveyor (5). Selection machine (8)
And a conveyor (8a) and a delivery tank (9) for delivering the paddy from the tank (7) to a paddy silo or a drying section, which constitute the cargo receiving and weighing sections (1) and (2). While continuously measuring the weight and water content of the rice, the paddy is transported from the drying section to the preparation and shipping section where the hull sorting is performed, prepared and stored in brown rice, or shipped, while connected to the office computing section (10). Input the receipt number (code) from the receipt operation panel (12) and the receipt data (paddy weight and water content) from the output section (13) of the weighing tank (7) to the centralized controller (11) Is configured as follows.

Furthermore, it is equipped with a reducer (14) for taking out sample rice for voluntary inspection, and a part of the raw rice that has been weighed in the measuring tank (7) is taken out as sample rice to the reducer (14) and shipped. A uniform amount (about 800 grams) of sample rice from the unprepared unprocessed paddy is taken out through the decompressor (14) and the metering branch valve (15), and a fixed amount of the sample paddy from the branch valve (15) is obtained. Is transferred to the test dryer (18) described later by the sample loader (16), and the surplus sample paddy of the compactor (14) is returned to the discharge tank (9). During this work, a certain amount of sample paddy is taken out to the sample loader (16).

Further, a test dryer (18) for drying the sample paddy from the sample loader (16) to a substantially constant water content is provided, and the receiving hopper (1) of the dryer (18) from the loader (16) is provided.
9) When feeding sample paddy into (19), loader (1
6) The discrimination signal of the two paths of (16) is output to the centralized control unit (11), and the acceptance number of the sample paddy sent to the dryer (18) is read by the number reader (20), and after the drying, When discharging the sample paddy from the outlet (21), the receiving number of the sample paddy released is read by the number reader (22), and the moving position of the sample paddy is input to the centralized controller (11). There is.

Next, the sample paddy dried by the dryer (18) is divided into sized (sized brown rice) and shavings (scraped rice), and a voluntary inspection machine (23) for measuring the ratio thereof is provided, and the delivery port ( twenty one)
The amount of dried sample paddy from (3) is put into the receiving hopper (25) through the fixed-quantity branch valve (24) only for the amount required for one voluntary inspection, and an extra dried sample is put by the sample packing machine (26). The paddy is hermetically packaged, and the bag is printed with the consignment number and stored, and brown rice extracted from the self-inspection machine (23) is hermetically packaged by the sample packaging machine (27) as sample brown rice, and the bag has the consignment number. Is printed and stored, and the amount of plain rice and scrap rice is input to the central controller (11),
This ratio is calculated and recorded.

The test dryer (18) is the sample loader (16).
The net bag (28), which is a container, is filled with a certain amount of the sampled paddy taken out from the bag and dried in the drying chamber (18a). As shown, drive sprocket (29) ... and idle sprocket (30) ...
Clip (32) to the endless chain (31) that is stretched between
A chain conveyor (33), which is a grain transfer mechanism that circulates and moves the bag body (28) through the inside of the drying chamber (18a) at a constant speed, and a lower part inside the dryer machine casing (34). A heater (36) for taking in hot air from the intake port (35), an exhaust duct (38) extending in a comb shape along the meandering path (37) of the conveyor (33), and the duct (38). The exhaust fan (40) for discharging the air inside the machine (34) from the exhaust pipe (39) above this, and the bag (28) of the sample paddy from the sample loader (16) to the clip (32). ) And an automatic hanging machine (41) for hanging the bag, and the number of the hanging bag (28) is read by the number reader (20).

In addition, a moisture detection mechanism that detects the moisture content of the sample paddy inside the bag (28) that is moved by the conveyor (33) based on the change in the capacitance of the hemispherical moisture sensor (42). A chuck arm (43) (44) and a take-out arm (45) (which is a grain discharging mechanism for forcibly opening the clip (32) and discharging it to the delivery port (21) when the water content thereof is below a certain level. 46) and the drive sprocket (29) ...
The motor (4
8), the conveyor (33) is continuously or intermittently driven by a motor (48) to circulate the bag body (28) along the meandering path (37), and one chuck arm ( The moisture sensor (42) of 43) is used as the positive electrode and the negative electrode of the other chuck arm (44) is used as the bag body (28).
The moisture contained in the sample paddy is detected based on the change in capacitance of the moisture sensor (42) by sandwiching between the chuck arms (43) and (44), and when the sample paddy is dried in the set state, the bag (28 ) Is at the exit arm (45) (46) position and the outlet (2
The number of the bag body (28) taken out to (1) is read by the number reader (22).

As is clear from the above, the sample grains are sorted and stored in the net-shaped bag body (28) which is the storage body, and the drying chamber (18
The chain conveyor (33), which is the grain transport mechanism that is circulated in a), the chuck arms (43) (44), which are the moisture detection mechanism that measures the moisture content of the sample grain, and the moisture content is below a certain level. Sample grain when drying chamber (18
a) The take-out arm (4
5) (46), and the chain conveyor (33)
When the bag (28) reaches the chuck arm (43) due to the circulation movement of the sample, the sample grain of the bag (28) is separated from other sample grains to detect the water content of the sample grain. It has a moisture sensor (42) for controlling.

Further, upper and lower front opening / closing windows (49) (50) are provided respectively on the front upper part and the lower part of the dryer (18) so that internal inspection can be performed from the upper opening / closing window (49) and manual operation can be performed from the lower opening / closing window (50). Therefore, the bag body (28) is hung on the clip (32). Furthermore, the dryer (1
The right side of 8) is equipped with a drying panel box (51), and the box (51) is provided with a moisture meter (52), a thermometer (53), various operation switch groups (54) and the like.

As shown in FIGS. 6 to 7, the clip (32) is supported by the left and right endless chains (31) and (31) at the center of a horizontal shaft (55) which extends laterally at regular intervals. It is moving in the direction of the arrow. The chuck arm (43)
The base end of (44) is integrally supported by the shafts (56) and (57), and the shafts (56) and (57) are interlockingly connected to each other through fan-shaped partial gears (58) and (59). One side of the shaft (56) is the piston rod (60a) of the pair of cylinders (60) (61)
Is connected via a swing arm (62). The cylinders (60) (61) are integrally connected to each other in opposite directions via a connecting plate (63), and the piston rod (61a) of the other cylinder (61) is connected via a shaft (64) to a casing (34). Side, and when either one of the cylinders (60) and (61) is extended, the chuck arms (43) and (44) are moved to the position indicated by the virtual line a in FIG. 6, and the cylinders (60) and (61) are further moved. When both of them are extended, the chuck arms (43) and (44) are closed to the substantially parallel position b. Further, as shown in FIG. 10, a carrier receiving plate (66) is supported on the tip of the other chuck arm (44) through a support shaft (65), and the receiving plate (6) is supported.
6) The guide roller (66a) at the other end is slidably brought into sliding contact with the bottom plate (18b) of the drying chamber (18a), and the conveyor (33)
Moisture measurement position (chuck arm) of bag (28) by
It is provided to assist the smooth movement to (43) and (44).

As shown in FIG. 8, the take-out arms (45) and (46) have their base ends integrally supported by the shafts (67) and (68).
Piston rod (72a) tip of a cylinder (72) that connects (68) with each other via fan-shaped partial gears (69) (70) and fixedly supports them through a shaft (71) on the machine (34) side. When the fixed swing arm (73) of the shaft (68) is connected to the cylinder (72) and the cylinder (72) is extended from the state shown in FIG. 6, the arms (45) and (46) are closed to the state shown in FIG. Simultaneously with operation, press roll (7) at the tip of each arm (45) (46)
4) It is configured so that the clip (32) is forcibly opened with (75).

Further, a discharge guide plate (76) that guides the bag body (28) that falls when the clip (32) is opened to the delivery port (21) is fixedly supported on one of the shafts (68). The guide plate (76) is provided so as to rotate counterclockwise in conjunction with the closing operation of the arms (45) (46).

By the way, FIG. Fig. 6. As shown in FIG. 7, the chuck arm (43) in the conveyance path of the bag body (28).
The bag body detection first switch (77) is located in front of the (44) position, and the bag body (2) is provided at a substantially central position between the chuck arms (43) and (44).
8) The water measuring and measuring position detecting second switch (78) for detecting that the moisture measuring state has been reached, and the bag body (28) after moisture measuring is chucked at a position above the chuck arms (43) (44). A detachment detection third switch (79) for detecting detachment from the arms (43) and (44) is provided, and the take-out arms (45) and (46) are also provided with a bag body (28) after moisture measurement to reach a release position. Release position detection fourth switch (8
0) are installed respectively, and the bag detection first switch (7
When the 7) is turned on, the chuck arms (43) and (44) are once closed to the b position to adjust the zero point of the moisture sensor (42) and then held open at the a position. When the detection second switch (78) is turned on, the bag (2
8) is sandwiched in the center and the chuck arms (43) and (44) are closed again to the b position for moisture measurement, and the next zero point adjustment is possible when the detachment detection third switch (79) is turned on. When the release position detection fourth switch (80) is turned on and the moisture sensor (42) detects that the water content is below a certain level, the extraction arms (45) (46) are closed to close the bag body (28). Is discharged from the delivery port (21) to the outside of the machine.

Further, as shown in FIG. 9, a damper (82) for opening and closing the suction ports (38a) (38b) is attached to the exhaust duct (38) via a support shaft (81), and the damper (82) is closed. A weight (83) for supporting is provided to connect the damper (82) in a closed state and the stretchable shielding sheet (84) that closes the opening edges of the suction ports (38a) (38b) to the damper (82). An opening lever (85) for contacting the bag body (28) suspended in the endless chain (31) is connected to the damper (82), and when the damper (82) is fully opened, the bag body (28) is closed. The lever (85) is attached to the tip of the damper (82) via the bending fulcrum (86) so as to be bendable in the moving direction by the bag (28).

This embodiment is configured as described above, and is installed in a rice center, a country elevator, a dry store, etc., and the raw rice harvested by the combine and the like is put into the load receiving weighing machine (3) for each individual and each cargo port. , Weighing tanks (7)
A certain amount of homogenized sample paddy is taken out from the weighed paddy pad by the decompressor (14) and the metering branch valve (15) to the sample loader (16) while the sample paddy of the loader (16) is sampled. Is dried with a test dryer (18) to the set water content, and the dried sample paddy is independently inspected (23).
It is used to measure the ratio of unpolished rice and scrapped rice, and the ratio of these is calculated. Centralized controller (11) controls the operation of each part based on the receipt number, and voluntary operation of sample paddy corresponding to the receipt number. Based on the inspection data, the proportion of plain rice by individual and shipment is registered in the office computing unit (10).

The operation in the test dryer (18) will now be described with reference to the float chart of FIG. 11. Now, the bag body (28) is moving by the chain conveyor (33).
7) When the switch (77) reaches the position, the third switch (79) is also turned on and the chuck arm (4) is turned on.
3) When it is confirmed that the bag body (28) has come out between the (44) and (44), the cylinders (60) and (61) are operated to move the chuck arm (4).
3) By closing (44) to the b position and adjusting the zero point of the moisture sensor (42), the capacitance which is the moisture value (α) at this time is stored, and then the chuck arm (43) ( 44) is a
When the second bag (78) is turned on by opening the next bag (28) from the upper surface of the receiving plate (66) between the arms (43) and (44), the chuck arms (43) and (44) are opened again. After closing to the position b, the capacitance, which is the moisture value (β) of the sample paddy in the bag body (28), is detected. When the difference (β-α) is below a certain value and the bag body (28) reaches the position of the fourth switch (80) and the switch (80) is turned on, the cylinder (7
2) operates to close the take-out arms (45) and (46) to release the holding of the bag body (28) suspended by the creep (32), and the bag body (28) is taken out of the machine from the delivery port (21). 28) is released.

Although the chuck arms (43) and (44) are provided so as to be orthogonal to the moving direction of the bag body (28) in the above-described embodiment, they are provided substantially parallel to each other and the center of the gap between the chuck arms (43) and (44) is set to the bag body (28). ) May move.

"Effects of the Invention" As is clear from the above examples, the present invention provides a grain transport mechanism (33) for sorting sample grain, storing it in the storage body (28), and circulatingly moving it in the drying chamber (18a). , A moisture detecting mechanism (43) (44) for measuring the moisture content of the sample grain and a grain discharging mechanism for forcibly discharging the sample grain outside the drying chamber (18a) when the moisture content falls below a predetermined level ( 45) and (46) are provided, and when the container (28) reaches the moisture detection mechanism (43) due to the circulation movement of the grain transfer mechanism (33), the sample grains of the container (28) are Since it has a moisture sensor (42) for detecting the moisture content of the sample grain in a state where it is separated from the sample grain of
a) It is possible to easily and fully automate a series of operations in the test dryer (18) until the moisture content of the sample paddy circulated in the inside falls below a certain level and is released to the outside of the drying chamber (18a). Not only the dryer (18) but also the entire drying facility can be labor-saving, and the processing can be performed with excellent accuracy and the moisture sensor (42) has a simple structure and functions. And sample grain movement can be easily interlocked with each other, and the moisture content can be properly detected by circulating movement and forced release of the sample grain and preventing overdrying of the sample grain. Can be performed safely, and since the sample grain is detected separately from other sample grains, accurate moisture detection can be performed.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view of the test dryer, FIG. 2 is an explanatory view of the entire facility, FIG. 3 is a front view of the test dryer, FIG. 4 is a right side view of the same, FIG. 5 is a rear view of the same, and FIG. FIG. 7 is an enlarged explanatory view of the same part, FIG. 7 is a side explanatory view of the previous figure, FIG. 8 is an operational explanatory view of the take-out arm portion, and FIG. 9 is a front view of the moisture detecting mechanism.
FIG. 10 is a plan view of the same, and FIG. 11 is a flow chart showing the relationship among the first to fourth switches. (18a) ... Drying room (28) ... Net bag (storage) (33) ... Chain conveyor (grain transport mechanism) (42) ... Moisture sensor (43) (44) ... Chuck arm (moisture detection mechanism) (45) (46) ... Take-out arm (grain discharge mechanism)

Claims (1)

[Claims] 1. A grain conveying mechanism for dividing sample grains into a container to circulate them in a container, a moisture detecting mechanism for measuring the moisture content of the sample grains, and a moisture content below a predetermined level. With a grain discharge mechanism for forcibly discharging the sample grain outside the drying chamber when the storage grain reaches the moisture detection mechanism by the circulation movement of the grain transport mechanism, the sample grain of the storage grain is collected. A moisture detector for a test dryer for grain, comprising a moisture sensor for detecting the moisture content of the sample grain in a state of being separated from other sample grains.