JPH0415905B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a test grain transfer device for a grain moisture measuring device, and can be used in grain dryers and the like.

[Problems to be solved by conventional technology and invention]

During grain circulation in a grain dryer or the like, a spiral groove is formed on the outer peripheral surface of the supply roll by a rotating supply roll and a guide member approaching the roll, such as a guide plate that springs to approach the roll. A test grain transfer device configured to transfer grains one by one is installed, and each grain is received and crushed between a pair of electrode rolls, while its electrical resistance value is determined and converted into a moisture value. There is a form.

By the way, in the spiral groove of the above-mentioned test grain transfer device, multiple grains are received at the starting end side, one grain riding on the width of the spiral groove is received and transferred in the axial direction, and the excess grains fall from the deep groove. Therefore, if the sample grains are mixed with twig stalks and are transferred as they are, the electrical resistance values processed by the electrode rolls will exhibit uneven and abnormal values. Further, the same effect can be obtained even if two grains are simultaneously transferred and guided to the electrode roll section.

[Means for solving problems]

This is a device for transferring grains to a moisture detecting section such as a pair of electrode rolls 22, 22, and is a device for transferring grains to a moisture detecting section such as a pair of electrode rolls 22, 22, and transfers one grain between the rotating outer circumferential surface of a supply roll 3 and a guide member 4 that approaches this outer circumferential surface. A spiral groove 1 for receiving and transporting the grains in the roll axis direction and a deep groove 2 for dropping the excess grains downward are formed, and in the vicinity of the spiral groove 1, there is a brush whose tip protrudes beyond the outer periphery of the spiral groove 1. The structure of the test grain transfer device of the grain moisture measuring instrument is provided with a dropper 5.

[Operation and effect of the invention]

The test grains that are sequentially supplied are received between the starting end of the supply roll and the guide member. One grain is engaged with the spiral groove and transported in the axial direction as the supply roll rotates. During this transfer, the dispensing tool provided on the supply roll repeats the dispensing action on the side of the spiral groove. That is, the above-mentioned scraping tool comes into contact with a part of the supplied grains, such as one of two grains, twig stalk grains, or hook grains, which is transferred in a position out of the engagement range of the spiral groove. is forcibly removed.

Therefore, since twigs, stalks, etc. that adversely affect moisture detection etc. are removed while reaching the discharge side, detection accuracy can be improved.

〔Example〕

An embodiment of this invention will be described based on the drawings.

A storage chamber 8 is provided in the upper part of the machine wall 7 of the dryer 6,
A drying chamber 9 is provided in the lower part, and a delivery valve 10 is provided in the lower part of the drying room 9 to feed out the grains and make them flow down. The front wall plate of the machine wall 7 has a burner 11 and an operating device 12 that controls starting and stopping of each part of the dryer 6, and the flame generated by the burner 11 is transmitted to the exhaust fan at the rear of the machine wall 7. 13 to ventilate the inside of the drying chamber 9.

At the front of the machine wall 7, a grain raising machine 14 equipped with a bucket conveyance mechanism is installed, and has a known structure in which grains flowing downstream of the drying chamber 9 are collected and circulated to the upper storage chamber 8.

A moisture meter 15 is provided on the upper side of the grain hoist 14 to receive a portion of the grains splashed out from the bucket and detect the moisture with a moisture meter.

That is, the moisture measuring device 15 is formed into a box shape surrounded by plate materials 16, 17, and 18 at the front, top, bottom, left and right sides, and is connected to the supply port 19 of the grain raising machine 14 and the upper plate material 17.
The supply gutter 20 communicates with the opening 20 formed in the
A part of the circulating grains to the storage chamber 8 can be taken into the moisture measuring device 15.

Inside the box, there are supporting metals 23, 24, 2.
5 and 26 are provided in parallel, and partition plates 27 and 27 are provided to be perpendicular to these. Among these, the shaft 28 of the supply roll 3 is rotatably supported via the supporting metals 23, 25, 26, and
A support shaft 30 of a guide plate 4 as a guide member approaching the supply roll 3 in a tangential direction is supported between the rollers 5 and 5. The supply roll 3 has a spiral groove 1 in which a single grain is received between it and the guide plate 4 and is fed out.
Then, a spiral deep groove 2 is formed with a smaller diameter than the outer diameter of the spiral groove 1 part, and the phase is shifted by 180 degrees in the grain transfer direction in the vicinity of the side wall of the bottom of the deep groove 2 for each pitch. A removing tool 5 consisting of a plurality of brushes whose tips partially protrude from the outer circumferential surface of the spiral groove 1
is provided. Incidentally, the guide plate 4 may spring to come into contact with the spiral groove 1, or may be in a fixed state.

The detection rolls 22, 22 are located at the grain delivery side end of the supply roll 3, and the support shafts 31, 32
are rotatably provided on the support metals 25 and 26. Note that these detection rolls 22, 22 are rotated in different directions at different circumferential speeds by a transmission mechanism to be described later, so that the fed grains can be crushed.

In the space formed between the support metal 26 and the front plate 16, a group of transmission gears such as the supply roll 3 and the upper detection rolls 22, 22 are arranged to transmit the rotation of the motor 37. Yes, the motor gear 38 is a two-stage gear 33 at the end of the shaft 31 of the detection roll 22.
Among them, the smaller diameter gear rotates and interlocks a gear 34 which is located at the end of the other shaft 32 of the detection roll 22 and has a slightly larger number of teeth than the gear. On the other hand, the large-diameter gear of the two-stage gear 33 is connected to the shaft 28 of the supply roll 3.
The structure is such that the rotation is interlocked.

Reference numerals 36 and 36 denote cleaning metals on which a brush material is implanted on the outer periphery, and 35 and 35 denote the supporting shafts thereof. Reference numeral 39 denotes an inclined plate provided between the partition plates 27 and 27 below the cleaning metal, and guides crushed grains detected by the moisture measuring device, excess grains flowing down from the deep groove 2, etc., to the reducing port 40. The structure is such that the grain is returned to the circulation path through the grain circulation route.

Reference numeral 41 denotes a downstream guide plate provided in an inclined manner from the lower side of the discharge side of the supply roll 3 to the intermediate receiving portions of the detection rolls 22, 22.

The electrical measurement signal output to the moisture meter 15 is performed by the operating device 12, and the moisture meter 15
The motor 37 is controlled to rotate and stop in response to the measurement signal. Note that the electrical moisture conversion process of the detection signal from the moisture measuring device 15 is performed by an arithmetic unit not shown, and for example, a known configuration that takes the electrical resistance value of crushed grains and converts it into a moisture value. It is.

The effect of the above example will be explained.

When the dryer 6 is started, the hot air from the burner 11 passes through the drying chamber 9 through which the grains flow, and the grains are dried. The grains fed out from the feed valve 10 are conveyed to the upper part by a grain hoist 14, returned to the storage chamber 8, and tempered.

During this process, upon receiving an electrical measurement signal from the operating device 12, the motor 37 of the moisture measuring device 15 rotates, and the supply roll 3 and the detection rolls 22, 22 are rotated in conjunction with each other via the transmission mechanism. For this reason, the grains taken in from the upper part of the grain raising machine 14 and deposited between the starting end of the supply roll 3 and the guide plate 4 are rotated by the rotation of the supply roll 3 so that each grain is moved between the spiral groove 1 and the guide plate. 4 and is fed out and transferred. Excess grains are discharged downward from the space formed by the deep grooves 2. The grains reaching the discharge side of the supply roll 3 are guided downward by the flow guide plate 41 and are supplied onto the detection rolls 22 , 22 .
Moisture is detected at the same time as the outer circumferential surface portions 2 and 22 are compressed and crushed, and this detected moisture value is displayed on the display section on the surface of the operating device 12. Further, when the moisture value detected by the moisture measuring device 15 reaches a preset finishing moisture value, the dryer 6 is automatically stopped.

When the test grains are fed out by the supply roll 3 and the guide plate 4 of the moisture measuring device 15, the excess grains that cannot fit into the spiral groove 1 fall downward and are detected by the detection rolls 22, 22. Together with the crushed grains that are crushed and discharged downward, they are received by the inclined plate 39 and returned to the circulation path within the grain raiser 14. In addition, twig stalks and grains that fit into the spiral groove 1 are As shown in FIG. 5, the key particles are repelled and removed by the scraping tool 5 before and after the contact state of the guide plate 4 while returning from the bent state to the open state, and are removed from the spaces such as the deep grooves 2 as described above. It falls downward from the ground, is caught by the inclined plate 39, and is returned.

In addition, the twig kernels that fit into the spiral groove 1 and are transferred in the lodging position are likely to get caught between the guide plate 4 and cause a so-called clogging phenomenon in which subsequent kernels stagnate. 5 and can be removed or returned to the standing position, so there is little risk of stagnation.

Therefore, moisture detection of only fine grains can be performed with less stagnation.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention.
The figure is a side cross-sectional view of the moisture meter showing a part of the transmission mechanism and detection roll expanded, Figure 2 is a rear view, Figure 3 is an enlarged side view of a part, and Figure 4 is a partially cutaway view. The front view of the dryer shown in FIG. 5 is an explanatory diagram of the operation. In the figure, reference numeral 1 indicates a spiral groove, 2 indicates a deep groove, 3 indicates a supply roll, 4 indicates a guide plate (guide member), and 5 indicates a scraper.

Claims (1)

[Claims] 1 A device for transferring grains to a moisture detection section such as a pair of electrode rolls 22, 22, and a guide member 4 that approaches the rotating outer peripheral surface of the supply roll 3.
A spiral groove 1 that receives one grain and transfers it in the roll axis direction and a deep groove 2 that allows excess grain to fall downward are formed between the spiral groove 1 and a tip end near the spiral groove 1. A test grain transfer device for a grain moisture measuring device is provided with a scraping tool 5 that protrudes beyond the outer periphery of the spiral groove 1.