JPS6146385Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention forms a grain tank in which grains to be dried are placed into a polygonal or cylindrical shape with the axis extending in the vertical direction, and the floor plate is made of a net or perforated board. In a cylindrical grain drying device that is formed to be breathable and is configured to supply drying air from below the floorboard to dry the grains deposited on the floorboard and placed in the grain tank, The present invention relates to a sampling device for measuring moisture content, which samples grains from inside the grain tank and measures the moisture value of the grains that are placed in the grain tank for drying.

The above-mentioned cylindrical grain drying device is, for example, disclosed in Japanese Patent Application Laid-open No. 1973-
As stated in Publication No. 80347, there is a grain lifting machine for loading grain into the grain tank, a discharge conveyor (lower conveyor) for discharging grain from the grain tank to the outside of the machine, and a machine that remains on the top surface of the floorboard during discharge. Although it is equipped with an auger that rotates and revolves on the floorboard to dredge out the grain, it was originally developed as a storage facility to store large amounts of grain, and the grain was kept in a grain tank. During the drying process, in which grain is loaded and dried by supplying drying air, the grain lifting machine, auger, and discharge conveyor are not operated, and the grain loaded in the grain tank is piled up on the floorboard. This is done by leaving it in that state and blowing dry air through it.

This is because the capacity of the grain tank is large and the feeding capacity of the auger that dredges the grains is small relative to that capacity, so even if the grains are circulated during the drying process, the amount of circulation per hour is small. This is because the time required to circulate the entire grain in the grain tank once becomes extremely long, making it impossible to improve the effect of circulating flow.

From this, when drying a large amount of grain with a high moisture content, the grain layer deposited on the floorboard becomes thicker, and the drying wind blown from below the floorboard Therefore, as described in JP-A-49-123836, a cylindrical exhaust pipe is installed in the center of the grain tank, and an umbrella-shaped cross section that protrudes radially from the exhaust pipe is used. A large amount of drying air can be supplied by providing an exhaust guide pipe and directing the drying air that blows up through the floorboards from the middle of the grain pile to the top of the grain layer. Alternatively, an auger that rotates on a vertical rotating shaft is installed vertically in the inner cavity of the grain tank, as described in Japanese Patent Application Laid-open No. 102684/1984, and the grains are deposited in the grain tank by the vertical auger. The drying air is permeated by stirring and fluidizing the material, and by allowing the drying air to pass through the areas where the deposited state has become coarse due to the fluidization.

By the way, the cylindrical grain drying device, which deposits grains on the floorboard of a cylindrical grain tank and dries them using the drying air blown from below the floorboard, During the drying process, when sampling grains to detect the progress of drying, the average of all the grains loaded in the grain tank is taken out at any time. There is a difficult problem to do so.

The present invention was developed in order to solve this problem that occurs with cylindrical grain drying equipment, and the grain is placed in a cylindrical grain tank and dried by blowing drying air while the grain is piled up. To provide a sampling device for a cylindrical grain drying device that allows sampling of grains in a cylindrical grain drying device to be performed at any time while averaging all grains.

In the present invention, as a means to achieve this objective, the floor plate of the grain tank, which is formed in a cylindrical shape with the axial direction being the vertical direction, is made breathable so that the grains placed in the grain tank can be In a grain drying device that blows drying air into a grain tank from below the floor plate to dry the grain, a grain outlet for sampling is provided on the floor plate of the grain tank, and grains are conveyed by pressure air below the floor plate. A grain transport path is provided, the grain extraction port is communicated with the transport path via a shutter that can be opened and closed, and a detection section of a grain moisture measuring device is provided in the middle of the grain transport path. The present invention proposes a sampling device for measuring moisture content in a cylindrical grain drying device, which is characterized by:

Next, an example of implementation will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes the body of a cylindrical grain drying device A, which is formed into a cylindrical shape with the axial direction being the vertical direction.

Reference numeral 2 denotes a floor plate made of a breathable partition such as a mesh or perforated board, and is placed on a shelf near the bottom of the inner cavity of the cylindrical body 1.

Reference numeral 10 denotes a cylindrical grain tank whose axial direction is the vertical direction, and is formed with an inner cavity of the body 1 above the floor plate 2.

Reference numeral 11 denotes an air guide path formed by the bottom of the inner cavity of the fuselage 1 below the floor plate 2, and the air outlet 1 of the hot air generating device 12 installed on one side of the fuselage 1 (left side in the drawing).
3, and by sending dry air (hot air) into the air guide path 11 from the air outlet 13, it passes through the breathable partition wall forming the floor board 2 from below the floor board 2. , so that drying air escapes into the grain tank 10 above the floorboard 2.

3 is an auger provided on the upper surface of the floor plate 2 in order to scrape out the grains that have accumulated on the floor plate 2;
The floorboard 2 is arranged so that the grains on the floorboard 2 are transported toward the discharge port 20 provided at the center of the floorboard 2.
A spiral grain feeding blade 30 is attached to the circumferential surface of an auger shaft 31 along the upper surface. The base end of the auger shaft 31 is mounted on a transmission case 33 that is supported on the fuselage 1 via a bearing 32 so as to rotate about a vertical rotation axis W. When the transmission case 33 rotates, it revolves around the rotation axis of the transmission case 33. Also,
The auger shaft 31 is in communication with a drive device (not shown) housed in a transmission case 33, and when power is transmitted from the drive device, the auger shaft 31 rotates on its own axis to perform a grain feeding action. At the same time, due to this rotation, the rolling wheel 34 provided at the tip of the auger shaft 31, which is the free end side, rolls and travels on the upper surface of the floorboard 2.
It is configured to revolve around the transmission case 33.

4 is a lower conveyor for carrying out the grains sent to the discharge port 20 outside the machine (on the right side of the drawing);
It is made of a belt conveyor type in which a wide belt 40 is wound around endlessly, and its starting end 4a in the conveying direction faces below the hanging port 20, and its terminal end 4b in the conveying direction protrudes outside the machine. It is connected to a grain intake port (not shown) of a grain lifting machine 5 installed in parallel with the machine body 1.

The grain lifting machine 5 is a conventionally known type in which a bucket conveyor 50 for transporting grains is suspended in a grain lifting tower 51, and a grain lifting machine 5 is provided at the upper end of the grain lifting tower 51 for taking out the grains. The discharge gutter 52 and the grain discharge port 53 are provided so as to be communicated with the discharge port of the bucket conveyor 50 by being alternately switched by a switching operation of a switching shutter (not shown).

Reference numeral 6 denotes an upper conveyor for loading grains, the starting end 6a of which in the conveyance direction communicates with the grain discharge port 53, and the terminal end 6b of the conveyor passing through the ceiling of the grain tank 10. It has been thrust into the internal cavity. In addition, 61
is an equalizer provided below the end portion 6b of the upper conveyor 6 in the conveying direction, and acts to spread and equalize the grains discharged from the upper conveyor 6 into the grain tank 10.

7 is an exhaust pipe arranged in the center of the grain tank 10;
The exhaust guide pipe 70 is blown into the layer of grains deposited on the upper surface of the floor plate 2 from below the floor plate 2 and has a chevron-shaped cross section.
It acts to guide the drying air collected by the air above the sediment layer.

Reference numeral 8 denotes a sampling device, and the grain outlet 80 for sampling is arranged in a line with the grain outlet 80 in the approximate center of the floorboard 2 in the middle, with a desired interval in front and behind it, as shown in FIG. The grain transport path 81 is connected to the grain transport path 81 provided below the floorboard 2, and one end of the grain transport path 81 (on the left side in the drawing) is connected to the air outlet 83 of the blower device 82. The other end side where the opening is made to protrude outside the machine and extend upward, and the upper end thereof is inserted into the upper part of the inner cavity of the grain tank 10 to open the discharge port 84 into the grain tank 10. Then, the grains taken out from the plurality of grain take-out ports 80 are conveyed through the grain conveying path 81 by pressure air blown out from the above-mentioned blower 82, and are discharged into the grain tank 10 from the discharge port 84 at the tip. The sampled grains are made to circulate and flow. and,
Each grain outlet 80 has a shutter 85 that can be opened and closed freely.
are provided respectively, and an actuating rod 87 of a solenoid 86 is connected thereto, and a spring 88 is connected to the actuating rod 87 as shown in FIG.
By biasing the grain outlet 80 to the side that always closes it, and turning on the solenoid 86, the actuating rod 87, which operates in the direction of arrow A in FIG. 3, resists the spring 88. Sampling is performed by pulling the shutter 85 and opening the grain outlet 80 as shown in Figure 4. When the solenoid 86 is turned off, the shutter 85 is released from the tension by the spring 88. Exit 80
Sampling is stopped by blocking the Note that the switches (not shown) for each solenoid 86 connected to each shutter 85 are built into a control panel (not shown) installed at a desired location on the aircraft body 1 so that they can be operated at hand. There is.

S is the grain conveyance path 81 of the sampling device 8
As shown in FIG. 5, the grain transport path 8 is
1, a detection chamber 91 equipped with a guide plate 90 in front of an open opening 91a for guiding the grains flowing therethrough is installed in parallel, and a detection chamber 91 is installed in parallel with the detection chamber 91 by the power of a motor M. An auger 92 is provided to send out the grains to the grain conveyance path 81, and the auger 92 allows a substantially constant amount of grains to remain in the detection chamber 91 while being replaced with new grains. The detection section S is located at the bottom of the screen. The detection section S includes a base plate 95 including an oscillation section 93 and a reception section 94 as shown in FIG.
It is a high-frequency resistance type that detects the change in moisture content of the grain by the current value as the grain flows on the upper surface, and is connected to the display section provided at an appropriate location on the fuselage 1 by cords 96, 96. are doing.

In this embodiment, a high frequency resistance type device is used as the grain moisture measuring device 9, but other moisture detecting means may be used.

Next, FIG. 7 shows another embodiment. In the figure, members denoted by the same reference numerals as those in the above-mentioned embodiments indicate the same members as those in the above-mentioned embodiments. In this embodiment, the exhaust pipe 7 in the previous embodiment and the exhaust guide pipe 70 having an umbrella-shaped cross section projecting radially from the exhaust pipe 7 are removed, and a vertical rotating shaft is provided in the inner cavity of the grain tank 10. By rotating, the auger a stirs and flows the grains deposited in the grain tank 10 so as to cause them to flow upward...
are supported in multiple series on an arm b mounted horizontally on the ceiling of the grain tank 10 so as to revolve around it, and while that arm b revolves around it, an auger a passes over the arm b along the longitudinal axis of the arm b. By reciprocating in the direction, the auger a.
This embodiment is the same as the embodiment shown in FIGS. 1 to 6 above, except that the operating position of a is sequentially displaced in plan view.

The embodiment device constructed in this manner operates as follows.

During the grain drying process, when sampling the grains to detect the degree of drying progress, use the shutter 85 attached to the grain outlet 80 provided on the floorboard 2.
When opened, the grains in the grain tank 10 flow out from the opened grain outlet 80 and are sampled.

At this time, if the blower device 82 is activated,
The grains flowing out from the grain outlet 80 are sent to the air blower 8
The grains are conveyed through the grain conveyance path 82 by the pressure air supplied from
4, the grains are returned to the upper part of the inner cavity of the grain tank 10, and there is no accumulation of grains below the grain outlet 80, so that the grains in the grain tank 10 are continuously A circulating flow of sampled grains flowing into the grain outlet 80, taken out into the grain conveying path 82, and returned to the grain tank 10 is formed.

Therefore, the grains that form this circulating flow and flow are only the grains that flow into the grain outlet 80 out of the grain layer deposited on the floor plate 2. Most of the grains flowing into the container are grains in a region that overlaps with the grain outlet 80 in a plan view,
Since the grains in that part will descend vertically one after another and flow into the grain outlet 80, the part that overlaps with the grain outlet 80 is cut out into a vertical column from the grain accumulation layer. In addition, the grains in each part of the circulating flow become the grains in each part of the cylindrical grain layer at different heights above and below.

Then, the detection unit S of the moisture measuring device 9 installed in the middle of the grain conveyance path 82 samples the whole accumulated grains in a vertical columnar shape, and further divides the grains into upper and lower parts. The moisture content will be continuously detected.

As explained above, the sampling device in the cylindrical grain drying apparatus according to the present invention is such that the floor plate of the grain tank is formed in a cylindrical shape with the axial direction as the vertical direction, and the floor plate of the grain tank is made breathable. In a grain drying device in which grains are dried by blowing drying air into the grain tank from below the floor plate, a grain outlet for sampling is provided in the floor plate of the grain tank, and a grain outlet is provided below the floor plate by pressure air to dry the grains. A grain transport path is provided to transport the grains, the grain extraction port is communicated with the transport path via a shutter that can be freely opened and closed, and a detection unit of a grain moisture measuring device is provided in the middle of the grain transport path. Since it is configured as follows,
Sampling for moisture content measurement is performed by sampling vertically and cylindrically the part of all the grains deposited on the floorboard in the grain tank that is wrapped and deposited above the grain outlet 80. It is done like this,
In addition, since the cylindrical sampled parts are sampled at different locations up and down, the average sampling of grains is can. Further, as in the embodiment, when a plurality of grain outlet ports 80 are provided, the grain outlet ports 80 are selected and opened one after another,
Also, by opening them at the same time, more accurate average sampling can be performed. The operation for that purpose is also performed by the shutter 85 and the air blower 8.
2, it is easy to control, and automation is also easy by combining it with a timer or the like.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a grain drying device implementing the present invention, Fig. 2 is a longitudinal sectional view of the grain drying device showing the main parts in the same as above, and Figs. 3 and 4 are explanations of the function of the shutter. 5 is a longitudinal sectional view showing the installed state of the moisture measuring device, FIG. 6 is a perspective view of the detection section same as the above, and FIG. 7 is a longitudinal sectional view of another embodiment of the device. Explanation of drawing symbols, A... Grain drying device, M...
Motor, S...detection unit, W...rotation axis, a...
... Vertical auger, b... Arm, 1... Body, 1
0... Grain tank, 11... Air guiding path, 12... Hot air generator, 13... Air outlet, 2... Floor board, 20... Discharge port, 3... Auger, 30... Grain feeding blade, 31 …
... Auger shaft, 32 ... Bearing, 33 ... Transmission case, 34 ... Rolling wheel, 4 ... Lower conveyor, 4a
...starting end, 4b...terminating end, 40...belt,
5...Grain lifting machine, 50...Bucket conveyor, 51
...Grain lifting tower, 52...Discharge gutter, 53...Grain discharge port, 6...Upper coveir, 6a...Starting end, 6b...
... Termination part, 61 ... Equalizer, 7 ... Exhaust pipe, 70
...Exhaust guide pipe, 8...Sampling device, 80
... Grain removal port, 81 ... Grain conveyance path, 82 ...
Air blower, 83...Blower port, 84...Discharge port, 8
5...Shutter, 86...Solenoid, 87...
... Actuation rod, 88 ... Spring, 9 ... Moisture measuring device, 90 ... Guide plate, 91 ... Detection chamber, 91a
...Opening port, 92...Auger, 93...Oscillating section, 94...Receiving section, 95...Base, 96...Cord.

Claims (1)

[Scope of utility model registration request] The floor plate of a grain tank formed in a cylindrical shape with the axial direction as the vertical direction is made breathable, and the grains placed in the grain tank are dried by blowing drying air from below the floor plate into the grain tank. In the grain drying device, a grain outlet for sampling is provided on the floor plate of the grain tank, a grain conveyance path for conveying the grains by pressure air is provided below the floor plate, and the grain outlet is provided in the conveyance path. Sampling for measuring moisture content in a cylindrical grain drying device, which communicates through a shutter that can be opened and closed, and has a detection section of a grain moisture measuring device in the middle of the grain conveyance path. Device.