JPH0228440Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a moisture detection device in a grain dryer.

The moisture detection device installed in the grain dryer detects the grain stored in the grain tank, which is stored in the box-shaped body of the grain dryer. By operating the elevator and discharge conveyor etc., the grain is circulated from the bottom of the tank through the drying section of the machine, taken out of the machine, and then returned to the inside of the tank by the elevator. This is to detect the degree of drying of grains during drying by supplying drying air (hot air).There is a grain outlet in the grain circulation path. A part of the circulating grain is sampled from there, the sampled grain is sent to a moisture detector to detect the moisture value, and after the moisture value has been detected, the grain is returned to the circulation path. It is set up to return.

By the way, as shown in FIG. 6, the moisture detection device installed in the grain dryer is usually configured such that the grain outlet w for sampling the grains is connected to the machine body that houses the grain tank 1a. At the bottom of the discharge cylinder part 2a installed at the upper end of the grain lifting tower 2 of the elevator a which is installed in parallel in front of the elevator 1, the starting end of the conveyor 19 for tensioning connected thereto. The sampling grain removal port is opened at the bottom of the conveying gutter 20, and the portion between the grain removal port w and the terminal end of the discharge conveyor 26 connected to the lower part of the grain lifting tower 2 of the elevator a is connected. The grain tank 1a is connected by a pipe 6, and thereby the grain tank 1a is transported from the bottom of the grain tank 1a through the drying section to the conveyor 26 for discharge.
Some of the grains that are taken out of the elevator a and circulated through the conveyor 19 for tensioning from the elevator a and returned to the grain tank 1a in the fuselage 1 are discharged into the discharge cylinder part 2a of the elevator a. Meanwhile, a sampling circulation path C1 is formed so as to be returned to the terminal end of the discharge conveyor 26, and a moisture detector b is installed in the middle of this sampling circulation path C1. The moisture in the sampled grains can be checked by connecting the C1 so that the grain taken out flows through and circulates inside the moisture detector b, and by activating the moisture detector b at a desired time. Allows value detection. This sampling circulation path runs along the lower end side of the sampling grain extraction pipe 6 midway up and down the grain lifting tower 2 of the elevator a, and the bucket conveyor 3 stored therein is raised. A moisture detector b is installed that communicates with the machine wall facing the process side and is connected to the grain removal pipe 6, and the grains are taken out from the grain removal port w provided at the starting end of the conveyor 19 for loading. In some cases, the circulation path C2 is configured to return the grains to the upward stroke side of the bucket conveyor 3 of the elevator a.

By the way, the moisture detection device installed in such a grain dryer A is capable of detecting moisture at a desired time during the drying process when the grain dryer A is operated to dry grains. When machine b is operated and the moisture value of the grains circulating through the sampling circulation paths C1 and C2 is detected, the moisture value is determined to be the same as that of the actual grain circulation at that time during the drying process. There is a problem in that a discrepancy occurs when comparing the moisture value of grains taken out from the road and detected.

The present invention was made in order to solve this problem, and includes providing a grain circulation path for sampling in a grain dryer, incorporating a moisture detector b into the grain circulation path, At any time, the moisture detector b
By activating the The purpose of the present invention is to provide a new means to obtain the moisture value of the grain correctly sampled from the grain inside.

Therefore, the present invention was completed based on knowledge obtained through various studies to solve the above-mentioned problems. That is, in the above-mentioned conventional means, which is constructed by providing the sampling circulation paths C1 and C2 and incorporating the moisture detector b therein, the circulation paths C1 and C2 are operated during the drying process by the operation of the grain dryer A. Since the circulation path is a bypass branch from the circulation path through which the grains inside circulate, the moisture value of the grains flowing through it is the same as the moisture value of the grains sampled from the circulating grains during the drying process. This should be the correct match. However, in reality, there are differences between the two. Therefore, after considering this point, we found that in the conventional means using the circulation path C1, the middle of the grain removal pipe 6 was
It is curved to avoid the motor M installed on the front side of the body 1 of the grain dryer A and the base B for assembling it, and has a curved part. In addition, in the case of means using the circulation path C2,
A grain take-out pipe 6 for sampling, whose upper end is connected to a grain take-out port w opened at the bottom of a discharge tube portion 2a installed on the downward stroke side of the bucket conveyor 3 of the lift a, is connected to the elevator a. By guiding the grains to the upward stroke side of the bucket conveyor 3, the grain removal pipe 6 has a curved part in the middle. The curved part formed in the middle of the grain removal pipe 6 in this way causes stagnation in the flow of grains that are restricted to a very small amount and flows through the circulation paths C1 and C2, and the moisture content is reduced. When detector b is activated, the stagnant grains flow into the moisture detector b and detect a moisture value that is different from the moisture value of the sampled grains from the actually circulating grains. It has become clear that this is due to the detection of From this, the grains to be taken out from the grain outlet w provided at the bottom of the discharge tube section 2a provided on the downward stroke side of the bucket conveyor 3 of the elevator a mentioned above are transferred to the bucket conveyor 3 of the elevator a. The grain is returned into the grain lifting tower 2 through a window hole provided in the vertical direction of the machine wall of the grain lifting tower 2 on the downward stroke side, and is provided between the grain takeout port w and the window hole serving as the return port. When the grain extraction pipe 6 for sampling was set in a straight state and a moisture detector b was installed therein to constitute a moisture detection device to prevent stagnation from occurring in the middle of the sampling circulation path, the desired time was reached. When the moisture detector b is activated to detect the moisture value of the grain at that time, it detects the correct moisture value that matches the moisture value of the grain sampled from the circulation path where the grain circulates during the drying process. This is because detectable results can be obtained.

Therefore, in the present invention, as a means to achieve the above-mentioned object, among the four circumferential walls of the grain lifting tower of the elevator installed in parallel to the fuselage that stores the grain tank,
A window hole is made in the upper and lower middle part of the machine wall facing the descending stroke side of the bucket conveyor in the grain lifting tower, and the machine frame of the crushing roll type moisture detector is inserted into the window hole inside the machine frame. The outlet of the crushing chamber of the cavity is installed so that it communicates with the inside of the grain lifting tower, and the lower end of the grain extraction pipe for sampling is connected to the connecting tube provided at the upper end of the machine frame. The upper end of the grain take-out pipe is installed on the lower surface of the starting end of the conveyance gutter of the loading conveyor, which is connected to the bottom of the discharge tube that extends to the descending stroke side of the bucket conveyor at the upper part of the grain lifting tower. The present invention proposes a moisture detection device characterized in that it is connected to a grain outlet.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for structural members having the same effect as those of the conventional means.

FIG. 1 is a partially cutaway front view of a grain dryer capable of implementing the means of the present invention, in which A is the grain dryer, 1 is the body of the grain dryer A, and a is the front side of the grain dryer 1. An elevator installed vertically, w denotes a grain extraction port for sampling, 6 denotes a sampling grain extraction pipe whose upper end side is connected to the grain extraction port w, and 4 denotes a grain taken out to the grain extraction pipe 6. A window hole is provided in the wall of the grain lifting tower 2 of the elevator a to return the grains to the inside of the elevator a, and b indicates a moisture detector.

The grain dryer A is equipped with a grain tank 1a in which grains to be dried are placed in a box-shaped machine body 1. At the bottom of the grain tank 1a, there is a drying section (not shown) that supplies drying air. ) is installed at the bottom of the machine body 1, and a discharge conveyor 2 is installed at the bottom of the machine body 1 to carry out the grains that have flowed down the drying section to the outside of the machine.
6 is provided, and an elevator a for lifting grains to be carried out by the conveyor 26 is provided on the front of the machine body 1, and a discharge cylinder part 2a provided at the upper part of the grain lifting tower 2 is connected to the machine body 1.
This is a conventionally known normal type which is constructed by connecting the starting end of a conveyor 19 for tensioning that is suspended horizontally on the upper part of the conveyor 19.

Further, the elevator a installed in front of the machine body 1 is a normal bucket elevator in which a bucket conveyor 3 is housed in the grain lifting tower 2, and the lower end of the grain lifting tower 2 is connected to the machine body 1. It is connected to the terminal end in the conveyance direction of a discharge conveyor 26 provided at the bottom.
Further, at the upper end of the grain lifting tower 2, on the downward stroke side of the bucket conveyor 3, there is installed a discharge cylinder part 2a for guiding the grains to be lifted and discharged by the bucket conveyor 3. The starting end in the conveying direction of a conveyor 19 for tensioning, which is placed horizontally on the upper part of the above-mentioned body 1, is connected to the bottom thereof. The aforementioned grain extraction port w for sampling is opened at the bottom of the starting end of the conveyor gutter 20 of the conveyor 19, and the upper end side of the grain extraction pipe 6 for sampling is connected to the grain extraction port w. Connected. There is also a window hole 4 for returning the grains taken out from the grain outlet w to the inside of the elevator a.
is provided at an intermediate position in the vertical direction of the machine wall facing the downward stroke side of the bucket conveyor 3 among the four machine walls of the grain lifting tower 2.

As shown in Fig. 2, the moisture detector b is
A connecting tube 8 for connecting the lower end of the grain extraction pipe 6 for sampling is provided on the upper part of the machine frame 5 formed in the shape of a machine casing, and the inside of the machine frame 5 communicates with the lower end side of the connecting tube 8. A crushing chamber 7 is provided, and within the crushing chamber 7 is housed a crushing roll 9 that crushes the grains flowing from the connecting cylinder 8 by driving rotation and detects the moisture value of the grains by electric resistance. On one side of the machine frame 5, on the side opposite to the side where the bearing part 17 for pivotally supporting the rotating shaft 16 of the crushing roll 9 is provided, a dish-shaped attachment is provided which communicates with the discharge port 15 opened at the bottom of the crushing chamber 7. Machine frame 5
This is a normal crushing roll type moisture detector equipped with an opening/closing door 10 that opens and rotates in synchronization with the rotation of the crushing roll 9 on the bottom surface of the machine frame 5, which is the bottom surface of the crushing chamber 7. During the OFF operation in which the crushing roll 9 is not rotated, the grains flowing in from the connecting tube 8 flow directly through the crushing chamber 7 and are discharged from the discharge port 15, and when the ON operation is performed, the crushing roll 9 rotates. Detects moisture content while crushing grains,
This is a normal type in which crushed debris is discharged outside the machine by opening and rotating the opening/closing door 10. The moisture detector b is attached to the outside of a window hole 4 provided in the wall of the grain lifting tower 2 of the elevator a, via the attachment frame 5a.

In addition, as shown in FIG. 3, the connecting tube 8 is
It is detachably attached to the upper part of the machine frame 5. When installing the connecting tube 8, remove the blind plate 12 that covers the opening 11 provided at the upper end of the machine frame 5,
Use the same screw 13 that was used to fix it to the connecting tube 8.
Install. When the connecting tube 8 is not installed,
The opening 11 at the upper end of the machine frame 5 is closed with a blind plate 12, and in this state, a window hole is opened in the machine wall on the upward stroke side of the bucket conveyor 3 of the grain lifting tower 2, and a window hole is opened there. The grains thrown up on the upward stroke side of the bucket conveyor 3 are introduced into the crushing chamber 7 through a through hole 14 opened in the upper part of the side surface of the machine frame 5.

In FIG. 2, 18 is a gear, S1 is a limit switch, and 7b is a sampling switch.

As shown in FIG. 4, the sampling grain extraction pipe 6 can be attached and detached to the sampling grain extraction port w provided at the bottom of the starting end of the conveyor gutter 20 of the above-mentioned conveyor 19. The upper end of the grain extraction pipe 6 is fixed with a hose band 23 to the connection tube 22 which is fixed and protrudes downward so as to be open to the slide bottom plate 21, and connected to the grain extraction port w. There is.

The discharge part of the conveying gutter 20 of the conveyor 19 for tensioning is a equalizer that allows the grains to fall evenly.

In FIG. 5, 24 is a power distribution board, and 25 is a power cord for moisture detector b.

The embodiment device constructed in this manner operates as follows.

A sampling device for sampling the drying grains and detecting the moisture value by the moisture detector b at any time during the drying process when the grain dryer A is in operation to dry the grains. The circulation path is located at the starting end of the conveying gutter 20 of the conveyor 19 for tensioning, which is the bottom of the discharge cylinder section 2a provided on the downward stroke side of the bucket conveyor 3 at the upper end of the grain lifting tower 2 of the elevator a. A grain take-out port w provided therein, a grain take-out pipe 6 for sampling whose upper end is connected to the grain take-out port w, and a connecting tube whose lower end of the grain take-out pipe 6 is provided at the top end of the machine frame 5. a moisture detector b attached to the upper and lower intermediate portions of the machine wall of the grain lifting tower 2 of the elevator a and facing the downward stroke side of the bucket conveyor 3; It consists of a window hole 4 that is installed in the part of the wall where the above-mentioned moisture detector b is installed.

For this reason, the grain extraction pipe 6 for sampling provided between the grain extraction port w and the connecting tube 8 provided at the top of the machine frame 5 of the moisture detector b is as shown in FIG. , which is installed in a straight state in the vertical direction, so that grains flowing inside the container do not stagnate.

From this, when the grain dryer A is operated to dry the grains, the grains are taken out from the sampling port w, and the moisture detector The flow of sampling grains circulating through the machine frame 5 of b and toward the downward stroke side of the grain lifting tower 2 of elevator a is the main flow path of the sampling circulation path. Exit lol
The grains flow into the grain removal pipe 6 connecting between the grains and the moisture detector b without causing any stagnation. As a result, when the moisture detector b is activated to detect the moisture value of the grains flowing through this sampling circulation path, the moisture value at the time when the moisture detector b is activated is detected. The average moisture content of the grains in the grain dryer A will now match correctly.

As explained above, in the invented means,
The grain extraction port w for sampling and the moisture detector b that detects the moisture value of the grain taken out from there are located on one of the four walls of the grain lifting tower 2 of the elevator a.
By vertically opposing each other on the outer surface of the machine wall on the descending stroke side of the bucket conveyor 3, and by positioning the moisture detector b between the top and bottom of the machine wall of the grain lifting tower 2,
The space between the grain outlet w and the moisture detector b becomes a free space without any obstructions, and the grain outlet pipe 6 connecting the grain outlet w and the moisture detector b is connected to the moisture detector. Since the upper and lower sides are straight to prevent grain stagnation, which can cause malfunctions when detecting the moisture value by operating b, the grain removal pipe is removed from the grain extraction port w for sampling. The moisture value detected in the sampling circulation path returning to the machine body 1 through the moisture detector 6 and the moisture detector b is made accurate and coincides with the moisture value of the grains in the machine body 1.

[Brief explanation of the drawing]

Fig. 1 is a side view of a grain dryer elevator equipped with the moisture detection device of the present invention, Fig. 2 is a vertical sectional view of the same moisture detection device, Fig. 3 is a rear perspective view of the moisture detection device, Figure 4 is an exploded perspective view of the sampling grain extraction pipe to the moisture detection device as above, Figure 5 is a perspective view of the grain lifting tower portion of the elevator equipped with the moisture detection device as above, and Figure 6 is an explanatory diagram of the conventional means. It is. Explanation of drawing symbols, A...grain dryer, B...base, M...motor, C1, C2...circulation path,
S1...Limit switch, S2...Sampling switch, a...Elevator, b...Moisture detector,
w...grain extraction port, 1...body, 1a...grain tank,
10...opening/closing lid, 11...opening, 12...blind plate,
13...screw, 14...through hole, 15...discharge port,
16... Rotating shaft, 17... Bearing section, 18... Gear, 19... Conveyor for tensioning, 2... Grain lifting tower,
2a...Discharge cylinder section, 20...Transport gutter, 21...Slide bottom plate, 22...Connection tube, 23...Hose band, 24...Switching board, 25...Power cord, 2
6...Discharge conveyor, 3...Bucket conveyor, 4...Window hole, 5...Machine frame, 5a...Mounting machine frame, 6...Grain removal pipe, 7...Crushing room, 8... ...Connecting cylinder, 9...Crushing roll.

Claims (1)

[Scope of utility model registration request] Elevator a installed in parallel to fuselage 1 that can store grain tank 1a
Among the four circumferential machine walls of the grain lifting tower 2, a window hole 4 is made in the upper and lower middle part of the machine wall facing the downward stroke side of the bucket conveyor 3 in the grain lifting tower 2.
The machine frame 5 of the crushing roll type moisture detector b is connected to the crushing chamber 7 in the inner cavity of the machine frame 5, and the outlet 15 of the crushing chamber 7 is connected to the grain lifting tower 2.
The lower end of the sampling grain extraction pipe 6 is connected to the connecting tube 8 provided at the upper end of the machine frame 5, and the upper end of the sampling grain extraction pipe 6 is connected to the connecting tube 8 provided at the upper end of the machine frame 5. A conveyor 19 for tensioning is connected to the bottom of the discharge cylinder part 2a projecting to the downward stroke side of the bucket conveyor 3 at the upper part of the grain lifting tower 2.
A moisture detection device, characterized in that it is connected to a grain outlet w provided on the lower surface of the starting end of the conveying gutter 20.