JPH02171583A - Sampling device for grain dryer - Google Patents

Abstract

PURPOSE:To shorten the time interval required for detecting the moisture content of grain by increasing the sampling amount of grain by changing the ratio between the delivery speed of the drying grain delivery device and the lifting speed of the grain lifting machine in such a manner as interlocked with the start of sampling by the sampling device. CONSTITUTION:When the control device 7 is operated, hot air is generated from a burner 8. As the hot air passes from the hot air chamber 14 through the air drying chamber 1 and is forcibly sucked and discharged through the air discharge chamber 15 by a fan 10, the grain is delivered from the storage chamber 17 through the air drying chamber 1 by a delivery device, and the dried grain is supplied into the grain collecting trough 13. The grain then is supplied through a supply trough 23 into the grain lifting machine 3, and is further lifted upwardly by a bucket conveyer 21 to be supplied into a transfer trough 19. The grain is removed from the transfer trough 19 onto a diffusion plate 20, where the grain is uniformly diffused and recirculated to the storage chamber 17 for more drying. The measurement signal from the control device 7 triggers the moisture content sensor 25 of the sampling device 4 and causes the delivery device 2 to be operated at a high rate of rotation. As the amount of grain that drops increases, the dropping grain is received by the moisture content sensor 25, which crushes the grain and measures the moisture content of the crushed grain. When the moisture content sensor 25 detects the same moisture content as targeted, the control device 7 performs an automatic control to automatically stop the dryer 5.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a sampling device for a grain dryer.

Conventional technology Conventionally, the ratio of the feeding speed at which grains in a ventilation drying chamber are fed out and flowed down by the rotation of a feeding device and the raising speed of a grain raising machine which returns the grains fed by this feeding device by frying is as follows. The sampling device that receives and samples part of the grains being raised in the grain raising machine does not need to be changed in conjunction with the start of take-out.
The ratio between the feed speed and the grain raising speed is always set constant, and the sample is sampled by the sampling device.

Problems to be Solved by the Invention Grain in the ventilation drying chamber is fed out by the rotation of a feeding device, is fed into a grain raising machine, is conveyed to the upper part of the grain raising machine, and is returned to the drying chamber. If the sampling device that receives and samples a part of the grain that has been repeatedly dried and is being raised by the grain raising machine is, for example, a moisture sensor that detects the moisture content of the grain, the sampled part The grains are supplied to this moisture sensor which operates at predetermined time intervals and are crushed under pressure, and at the same time, the moisture content of the crushed grains is detected.

At the time of moisture detection, even if the moisture sensor starts detecting grain moisture, the ratio of the feeding speed at which the feeding device feeds and flows down and the grain raising speed of the grain raising machine is the same. , the amount of grain sampled was always the same, and therefore it took a long time to detect grain moisture, but by changing the ratio between this feeding speed and increasing grain speed at the same time as the grain moisture started. , the amount of grains to be sampled is increased to shorten the time for grain moisture detection.

Problems to be Solved This invention aims to improve the feeding speed of a dry grain feeding device (2) that causes grains to flow down in a ventilation drying room (1), and the speed by which the fed grains are returned to fried grain by this feeding device (2). The ratio to the grain raising speed of the grain raising machine (3) is changed in conjunction with the start of take-out of the sampling device (4) that receives and samples part of the grains being raised by the grain raising machine (3). A sampling device for a grain dryer is configured as follows.

Operation of the invention The grains in the ventilation drying chamber (1) are fed out ffi! +21
The grain is fed out by the rotation of the grain raising machine (3), and is fed into the grain raising machine (3).
) is repeated for drying, and the grain raising machine (3) receives a portion of the grains being raised and samples them. A portion of the sampled grains is supplied to the moisture sensor, which operates at predetermined time intervals, and is crushed under pressure, and at the same time, the moisture content of the crushed grains is detected.

During this drying work, the moisture sensor operates at predetermined time intervals to detect grain moisture. From the start of each grain moisture detection to the end of detection, the feeding device (2) The ratio of the feeding speed at which the grains are fed out and flowed down and the raising speed at which the grain raising machine (3) raises the grains is changed, the feeding speed is controlled to be faster, and the grains are fed out and flowed down by the feeding device (2). The grain amount is increased and grain drying and moisture detection is performed.

Effects of the Invention According to this invention, grains are fed out from the drying chamber (1) in conjunction with the start of take-out of the sampling group @ +41, which receives and samples a part of the grains being raised by the grain raising machine (3). By changing the ratio between the feeding speed of the grains flowing down and the raising speed of the grain raising machine (3), sampling of grains can be performed in a short time.

Embodiment In the rotation, (5) is a grain dryer, and the machine wall (6) of this dryer (5) has a rectangular shape that is long in the front and back direction, and consists of front and rear wall plates and left and right wall plates, On this front wall board is an operating device to start and stop this dryer (5)! ! +
71 and a burner case (9) with a burner (8) inside, and the rear wall plate shows the exhaust fan θ value and the motor (
1υ and a variable speed motor 07J.In the center of the lower part of the inside of the machine wall (6), there is provided a grain collection gutter (131) in which a transfer spiral is mounted on the shaft in the longitudinal direction. On the upper side of 5, ventilation drying chambers +11 formed between the ventilation networks are arranged in parallel and communicated with each other, and at the bottom of each ventilation drying chamber (1) there is a feeding device that feeds out the grains and lets them flow down!+21 is rotatably supported. This feeding device (2) is in the form of a valve, and there is a hot air chamber (14) between the inside of this ventilation drying chamber (1).
It has a configuration in which a vent chamber (I9) is formed outside each ventilation drying chamber (1) and communicates with the burner (8), and a vent chamber (I9) is formed outside each ventilation drying chamber (1) and communicates with the ventilator (10). Yes, each feeding device I (21 is the speed change motor (1) via the deceleration device (old)
8, and the exhaust fan (I is the motor (10).

A storage chamber (7) is formed on the upper side of each ventilation drying room (+1) and is communicated with the storage chamber (7). Gutter (1
A supply port for supplying the transferred grains into the storage chamber 07 is provided in the center of 1, and a diffusion plate is provided below the supply port to uniformly diffuse and return the transferred grains into the storage chamber 07. The grain hoist (3) is installed in the front part of the front wall board, and inside the packet conveyor 21) belt is stretched between the upper and lower pulleys, and the upper end and the There is a dispensing tube I2 between the gutter (1) and the starting end.
δ is provided for communication, and a supply gutter mill is provided between the lower end and the terminal end of the grain collection gutter (13) for communication,
At the top of this elevator (3) is a motor c! 4 is provided, and this motor (241 is the packet conveyor Ql) belt, the transfer gutter (the transfer spiral in 1c3, the spreading plate 3G, the grain collection gutter (Ill) is configured to rotationally drive the transfer spiral, etc. be.

A sampling device (4) is provided at the vertical center of the grain raising machine (3), and this sampling device (4) is composed of a moisture sensor (2Sl) for detecting grain moisture.
The moisture sensor 29 starts a motor Qe provided in the moisture sensor (29) by transmitting an electrical measurement signal from the operating device (7) at predetermined time intervals.

The packet conveyor I21) receives grains that fall while being conveyed to the upper part, crushes the grains under pressure, and at the same time detects the moisture content of the crushed grains.This measurement signal causes the motor (2B to and this starting causes the said operating device (7)
When inputted to the control device 12B of the feeding device (2),
The variable speed motor (1) rotationally drives the control device +
21, the feeding device (2) rotates at high speed to increase the amount of grains fed and flowing down, and when the measurement signal stops, the variable speed motor α is controlled to return to low speed rotation. When the feeding device (2) rotates at high speed, the number of grains that fall while being conveyed to the upper part by the packet conveyor 21) increases, thereby shortening the grain moisture detection time. Yes, the control device +2EI is A-D
The configuration consists of a converter, input circuit, CPU, output circuit, etc.

The lower side of the moisture sensor may be provided with a take-out device (to) for taking out the grains from the sampling device (4) outside the machine, and this take-out device (to) is box-shaped and rotatable. The packet conveyor G! +1 is configured to receive the grains that fall during conveyance to the upper part, rotate it and take it out of the machine, and press the switch O1 that turns on and off when this take-out device 4 is in the closed state, and this switch 0ω is turned on. When the ON state of this switch (11) is input to the control device ffl, the speed change motor α is controlled to rotate at high speed by the control device 2[) in the same way as above, and the It is configured to increase and control the amount of grains fed out and flowing down by the feeding device (2), and similarly to the above, it is configured to shorten the time for taking out the grains by the feeding device 12 [1].

Hereinafter, the operation of the above embodiment will be explained.

By operating the operating device (7), the grain dryer (5
), burner (8), etc. are started, hot air is generated from this burner (8), passes through the ventilation drying room full from the hot air chamber 04, passes through the ventilation chamber (I! By suctioning and exhausting air, the grains stored in the storage chamber (m) are transferred from this storage chamber (1) into the ventilation drying chamber (1) to the feeding device (2).
While being fed out and flowing down, the grain is exposed to this hot air, dried, and supplied into the grain collection gutter (13), from which the grain is transferred from the lower part through the supply gutter (2) into the grain raising machine (3). It is conveyed in a spiral and transported to the upper part by a packet conveyor Q1).
It is supplied to the transfer gutter (12G) through the dispensing tube, and from this transfer gutter (+9) it is transferred and supplied to the diffusion plate a! Room (m
The operating device (
Moisture sensor 4 of the sampling device (4) is started by the measurement signal from 7), and the start of this moisture sensor 29 drives the feeding device (2) to rotate at high speed. As the grain size increases, the packet conveyor (
In step 21), a large amount of grains that are being transported to the upper part fall, and these fallen grains are collected by the moisture sensor c! At the same time as the grains are received by Sl and crushed under pressure, the moisture of the crushed grains is detected, and when this moisture sensor 4 detects the same grain moisture as the finishing target moisture, the operating device (7) automatically controls the drying process. Automatically stop the machine (5).

When the grains are taken out of the machine during this drying, the take-out device (21) of the sampling device (4) is operated in the closed state, and the feed device @ (2) is driven to rotate at high speed by turning on the switch ELL. The amount of grains that are fed out and flowed down by this feeding device 1 (21) increases, and a large amount of grains that are being conveyed to the upper part of the packet conveyor I21 fall, and the falling grains are received by the take-out device I21 to fill the amount. When this occurs, the grain is removed from the machine by opening it.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is an enlarged front view of a part thereof, and
Figure 3 is an overall side view of the dryer that can be partially cut away, Figure 4 is a sectional view taken along line A-A in Figure 3, Figure 5 is an overall rear view of the dryer, and Figure 6 is a partial view of the dryer. FIG. 3 is a partially cutaway front view. In the figure, code (1) is a ventilation drying room, (2) is a feeding device, (
3) shows a grain raising machine, and (4) shows a sampling device.

Claims (1)

[Claims] A dry grain feeding device (
The ratio between the feeding speed of step 2) and the raising speed of the grain raising machine (3) which returns the grains fed out by this feeding device (2) to the grain raising machine (3) is calculated as follows: A sampling device for a grain dryer that is arranged to be changed in conjunction with the start of take-out of a sampling device (4) that samples a portion of the grain dryer.