JPS6153290B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a leveling device for a grain dryer,
In particular, a grain dryer that can detect the stacked distribution of grain to be dropped into a storage tank at multiple locations, correct the amount of grain input to a specific location based on the detected stacked distribution, and deposit the grain evenly. Regarding grain leveling device.

Conventionally, a rotary type or a screw gutter type has been used as an evenly distributed grain dropping device, and the grains are dropped evenly into a storage tank in order to level out the piled state. However, if the variety, moisture content, properties, etc. of the grain change, the state of diffusion will change, and the grain will not necessarily be deposited evenly. When such an uneven condition occurs, problems such as a decrease in grain storage capacity, a decrease in drying capacity due to exposure of the hot air path, and malfunction of the feeding valve due to the accumulation of foreign substances in specific locations occur. .

Traditionally, devices similar to leveling devices include:
For example, it is disclosed in Utility Model Application Publication No. 54-51161. This device has a storage tank 8 as shown in FIGS.
1 has a rectangular shape, a diffusion plate 82 is installed so that grains can be evenly poured into every corner of this rectangular storage tank.
In accordance with the rotation speed of
It has been established. In the figure, 86 is a rotating shaft, 87 is a long side plate portion, and 88 is a short side plate portion. However, in this conventional device, the storage tank 8
According to the shape of 1, more grains are released in the longitudinal direction of the storage tank. However, even with this configuration, fluctuations in the deposition state occur due to changes in grain properties, and there is a disadvantage that it is impossible to correct such fluctuations.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned inconveniences, to provide a level detection means for detecting the grain accumulation distribution state at a plurality of locations in a storage tank, and to place grains in locations with a small amount of accumulation according to the detection results of the level detection means. The purpose of the present invention is to realize a grain leveling device for a grain dryer that can evenly deposit grains in a storage tank by increasing the amount of grains to be fed.

Embodiments of the present invention will be described in detail and specifically below based on the drawings.

1 to 4 show a first embodiment of the invention. In the figure, 1 is a grain dryer. This grain dryer 1 has a storage part 3 of a storage tank 2 part, a drying part 4, and a grain collection part 5, and lifts up the grains put into the hopper of a grain lifting machine 6, and uses the upper carrying means 7 to collect the grains. Grain is carried into the upper center of the dryer 1, and the grain is evenly dropped into the storage tank 2 by the equal distribution feeding means 8, guided through the drying section 4 to the grain collecting section 5, and carried out at a lower part (not shown). The grain is transported to the lower part of the grain lifting machine 6 by means of means, and then lifted up by the grain lifting machine 6 again. During this cycle, the grain is dried. wind machine,
And 12 is a discharge chute.

As shown in Figure 2, first draw the storage tank 2 at 4.
divide into parts. That is, the storage tank 2 is divided into the first section 1
3-1, second section 13-2, third section 13-3,
It is divided into four parts of the fourth section 13-4. Furthermore, each compartment is provided with a sensor serving as a level detection means for detecting the accumulation level, which is the distribution state of grains. In other words, the first sensor 14-1 is located in the first section 13-1.
1. Similarly, a second sensor 14 is installed in the second section 13-2.
-2, the third section 13-3 has a third sensor 14-3
And in the fourth section 13-4 there is a fourth sensor 14-4.
are provided respectively.

As shown in FIGS. 2 and 3, the upper carrying means 7 is composed of a supply gutter 15 and a screw 16, a supply cylinder 17 is vertically disposed at the end of the upper carrying means 7, and a gear box 18 is installed above the supply cylinder 17. will be established. A rotating shaft 19 hangs down from the gearbox 18, and a dispersing blade 21 constituting grain feeding means is fixedly installed at the lower end of the rotating shaft 19. At the lower end of the supply cylinder 17, a main discharge port 22 is provided in the vertical direction, and four control discharge ports 23 are formed in the horizontal direction surrounding the main discharge port 22. These four shutters that open and close the control discharge port 23, namely, the first shutter 24-1, the second shutter 24-2, the third shutter 24-3, and the fourth shutter 24-4 are arranged at equal intervals in the circumferential direction. establish. Solenoids 25, which are electromagnetic driving means for controlling the opening and closing of these shutters 24, are provided in each of the supply tubes 17. In addition, shutter 24
When arranging the distribution blades 21, considering the performance etc. of the dispersion blades 21, for example, by opening the first shutter 24-1, the grains are linked so that they are intensively fed into the first section 13-1. Determine the lever shutter position. That is, the grain feeding means includes a supply cylinder 17, a dispersion blade 21, and a shutter 24, and is controlled by a control means (not shown).

Next, the operation of this first embodiment will be explained based on the flowchart of FIG.

When an operation switch (not shown) is turned on, drying starts 100. Next, when a weight hanging method is used as the level detection means, for example, a weight hanging method that determines the accumulation level by the time it takes for the weight to reach the top surface of the grain, the start time T ₁ of the level detection means,
First, T ₂ , T ₃ , and T ₄ are set to 0 (101). Next, the first to fourth sensors operate 102 and perform level detection 103. Here, the accumulation level detected by the first sensor 14-1 is represented by _l1 , the second sensor is similarly represented by _l2 , the third sensor by _l3 , and the fourth sensor by _l4 . Next, the grain storage capacity M is calculated using the formula M=l ₁ +l ₂ +l ₃ +l ₄ /4×S (S is a constant determined by the cross-sectional area of the storage tank)10
4, then calculates 105 the hot air temperature corresponding to the capacity M, and displays 106 this final capacity M on the display. Next, the average level m corresponding to the capacity M
(m=l ₁ +l ₂ +l ₃ +l ₄ /4) is compared with the level l of each section, and a comparison is made to see if the difference has reached a predetermined value H. That is, a comparison 107 of m−l ₁ ≧H is performed, and if YES, that is, if l ₁ is lower than the average level m by H or more, the first shutter 24-1 is set according to the degree of the difference. Time to open
Calculate T ₁ 109 and open the first shutter 110
do. In the comparison 107, if the difference between the grain accumulation level _l1 in the first section 13-1 and the average level m is within H, that is, if the result in 107 is NO, the first shutter is closed. 1
08. Such operations are performed in exactly the same manner in each section, that is, the second section 13-2, the third section 13-3, and the fourth section 13-4. That is, comparison 111,1
15,119. Next, a judgment 123 is made as to whether or not the time for the next detection has arrived. If the detection time has come, the process jumps to step 101 and performs the same operation. This comparison 123
, the first shutter 24
A determination 124 is made as to whether or not the time during which -1 is open, that is, the time _T1 has elapsed. If this time has elapsed, the first shutter is closed 125.
Then, a determination 126 is made as to whether _T2 hours have elapsed. Also,
Even if the determination 124 is no,
A determination 126 is made regarding the elapse of T ₂ hours. Like this,
Progress assessment of T ₁ , T ₂ , T ₃ , T ₄ , that is, 12
4, 126, 128, 130, and if the respective time has elapsed, the respective shutters are closed, that is, the respective shutters are closed 125, 127, 1.
Do 29,131. Thereafter, the process jumps to judgment 123 as to whether the detection time has come again. In this way, the opening direction of the control discharge port 23 is controlled by the control means according to the detection result from the level detection means, and the amount of grain input is increased to a specific location with a low accumulation level in the storage tank 2. , it is possible to correct the grain accumulation level in each section and deposit the grains evenly in the storage tank 2. Also, this first
The grain input means in the embodiment has a simple configuration;
Furthermore, since the only movable parts are the dispersion vane 21 and the shutter 24, the operation of each member is ensured well and there are few failures, so reliability can be increased and the service life can be extended.

5 and 6 show a second embodiment of the invention. In the following embodiments, parts having the same functions as those in the first embodiment described above are designated by the same reference numerals.

This second embodiment is characterized by the following points. That is, the rotary cylinder 31 is attached to the lower end of the supply cylinder 17.
is provided, and one controlled discharge port 32 is provided in this rotary cylinder 31.
A second gear 33 is fixedly installed on the upper part of the rotary cylinder 31, and the second gear 33 is meshed with the first gear 3.
4 will be provided. A geared motor 35 is connected to the first gear 34 . However, when leveling is started, the geared motor 35 is controlled by an appropriate control means, and the rotating cylinder 31 is rotated to direct the horizontally opened control outlet 32 in a desired direction. By flowing out the grains from 32, for example, as shown in FIG. 6, grains can be intensively fed in the direction of the second compartment 13-2.

According to the configuration of this second embodiment, the number of movable parts is further reduced, and the number of parts can be reduced. Furthermore, since the direction of the control discharge port 32 can be slightly changed, the location where grains are introduced can be precisely controlled and specified.

As is clear from the above detailed description, according to the present invention, by controlling the opening direction of the control discharge port by the control means according to the detection result from the level detection means, the control means can control the opening direction of the control outlet in accordance with the detection result from the level detection means. Grain can be input intensively into the dryer, and the pile of grain can be evened out, increasing the grain storage capacity and improving the efficiency of use of the dryer, especially when processing small quantities. It is possible to prevent a decrease in drying ability due to exposure of the hot air path, etc., and to prevent deterioration of the dryer itself. In addition, it is possible to obtain a number of effects such as being able to prevent the conventional problem of contaminants accumulating in the lowest deposition level portion and causing a malfunction of the delivery valve in this portion.

Furthermore, according to the configuration of the present invention, the configuration is simple and there are few moving parts, which ensures good operation of each member and reduces failures, resulting in high reliability and a long service life. obtain.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, FIG. 1 is a partially cutaway side view of a grain dryer, FIG. 2 is a sectional view of the main part taken along the - line in FIG. 1, and FIG. 1 is an enlarged half-sectional view indicated by the arrow in FIG. 1, and FIG. 4 is a flowchart showing the operation of the control means. 5 and 6 show a second embodiment of the present invention, FIG.
The figure is a plan view of the storage tank portion. Figures 7 to 9 show the prior art. Figure 7 is a cross-sectional plan view of the storage tank, Figure 8 is an enlarged view of the main part of the equalizing drop device, and Figure 9 is a perspective view of the diffusion plate. . In the figure, 1 is a grain dryer, 2 is a storage tank, and 7 is a grain dryer.
is upper carrying means, 14-1, 14-2, 14-
3 and 14-4 are first, second, third, and fourth sensors, respectively; 17 is a supply cylinder; 21 is a dispersion blade; 22 is a main discharge port; 23 is a control discharge port;
4-2, 24-3, 24-4 are the first, second, and
These are the third and fourth shutters.

Claims (1)

[Claims] 1. In a circulating grain dryer, a plurality of level detection means are provided in the storage tank to detect the grain accumulation distribution state in the storage tank, and the lower end of the grain supply cylinder has a main discharge port that opens vertically and a main discharge port that opens horizontally. A control discharge port that opens is provided, a dispersion blade is provided below the grain supply cylinder, and a control means is provided for controlling the opening direction of the control discharge port in accordance with the detection result from the level detection means. Grain leveling device for grain dryers.