JPS6335345Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is capable of sequentially and intermittently rotating the payout rolls, each of which is suspended at the end of two rows of drying passages, at equal intervals using a single transmission chain. This invention relates to a feeding unit drive device in a grain dryer.

Prior Art Conventionally, a plurality of rows of drying passages are installed vertically between a grain storage tank and a grain take-out chamber, and each of the plurality of rows of drying passages has a feed-out roll mounted on its end, and the number of said feed-out rolls is one. The grains filled in the plurality of drying passages are sequentially discharged into the grain removal chamber by intermittent rotation of the two short drive chains installed at intervals on both sides of the transmission chain. A feeding section drive device in a grain dryer that dries grain by repeating the circulation action of returning the grain to the grain storage tank using an elevator was described before this application, for example, in Japanese Patent Application Laid-Open No. 58-26980. It has been done and is well known.

Problems to be Solved by the Invention By the way, two payout rolls mounted on a shaft in a payout unit provided at the ends of two rows of drying passages are sequentially and intermittently rotated using a conventional payout unit drive device of this type. When attempting to dry, two drive chains are usually installed on both sides of a symmetrical position that divides one transmission chain into two, and the meshing action of the two drive chains rotates intermittently to dry the two rows. The grains filled in the passage were alternately discharged into the grain removal chamber and circulated to dry the grains.

However, as mentioned above, if the drive chains are installed at symmetrical positions that divide one transmission chain into two and drive the feeding rolls, the second feeding roll will not move as much as the first feeding roll. The rotation is delayed by the length of the interval between the feeding rolls, and the roll drive interval is inevitably inconsistent.
A large amount of grain will be temporarily discharged into the grain removal chamber, and as a result, the elevator and loading equipment will be temporarily turned off in order to smoothly circulate and return the temporarily large amount of grain to the grain storage tank. Only the one with the capacity that was suitable for the maximum amount was used, which resulted in the disadvantage of being extremely uneconomical.

Therefore, in the present invention, two drive chains are installed on both sides of one transmission chain so that the roll drive interval between the first and second feed rolls is always constant, and the amount of grain falling is reduced. By equalizing the grain, even with a lift or loading device with a small capacity, it is possible to smoothly circulate and flow the grain, thereby reducing grain damage and reducing the motor output. This problem has been solved by providing a feeding unit drive device for a grain dryer that can improve uniform distribution of grain.

Means for Solving the Problem Therefore, the technical problem related to the present invention is to move the two feed rolls so that the roll drive interval is constant.
The aim is to drive and rotate accurately with a separate drive chain.

In order to solve this technical problem, the present invention consists of two drive chains, one of which is installed at a proper position on the transmission chain, and the other drive chain is connected to two feed rolls from a symmetrical position of one of the drive chains. This is a feed-out unit drive device for a grain dryer, characterized in that it is mounted on a transmission chain at a position shifted in the rotational direction by the distance between the two.

Effect The above technical means acts as follows. (1st
(See figures 5 to 5). That is, when drying grains, a certain amount of grains put into the grain storage tank 2 via the elevator 17 and the carry-in conveyor 16 are also filled in the two rows of drying passages 7 and 8, and these two
The grains filled in the drying passages 7 and 8 of the row are transferred to two
The paper is sequentially flowed down by the delivery rolls 11 and 12 which are alternately and intermittently rotated by meshing with the drive chains 27 and 28, and during this time, the paper is exposed to dry hot air and is ventilated and dried. The grains fed out by the respective feeding rolls 11 and 12 are sent from the grain unloading chamber 4 to the elevator 17, further supplied from the elevator 17 to the carry-in conveyor 16, returned to the grain storage tank 2, and returned to the drying passage 7, 8, it is exposed to dry hot air and dried.

Therefore, if the grain is circulated and flowed multiple times as described above, it will be dried to a predetermined moisture content.

By the way, when the two delivery rolls 11 and 12 are sequentially and intermittently rotated by the rotation of the one transmission chain 26, the two drive chains 27 and 28 installed on both sides of the one transmission chain 26,
One drive chain 27 is connected to the transmission chain 26
At the same time, the other drive chain 28 was attached to the transmission chain 26 at a position shifted from the symmetrical position A of the one drive chain 27 by the distance L between the two delivery rolls 11 and 12 in the rotational direction. Because of the positional relationship, the rotation between the first and second feed rolls 11 and 12 is always maintained constant and rotated by the length of the drive chains 27, 28.

Therefore, since the roll drive interval is made constant, the amount of grain discharged from the drying passages 7 and 8 into the grain removal chamber 4 is also kept constant without increasing or decreasing. Even if the grain lifting machine 17 and the loading conveyor 16 have the minimum capacity,
The grain can be returned to the grain storage tank 2 without causing stagnation, damage to the grain can be reduced, and appropriate grain circulation fluidized drying work can be easily performed while reducing the motor output.

Embodiment Next, the structure of a feeding unit drive device in a grain dryer according to the present invention will be described based on an embodiment shown in the accompanying drawings.

In the drawing, 1 indicates a grain storage tank 2, a grain ventilation drying section 3, and a grain removal chamber 4 from the upper stage to the lower stage.
The grain ventilation drying section 3 has a hot air blowing frame 5 and an exhaust frame 6, and two drying passages 7 and 8 are arranged between the frames 5 and 6.
The drying passages 7, 8 are arranged alternately in rows, and the dispensing portions 9, 10 provided at the ends of the drying passages 7, 8 are provided with dispensing rolls 11 which are sequentially and intermittently rotated in one direction. , 12 are rotatably mounted on respective shafts.

13 is a hot air generator, 14 is a suction exhaust machine, and the hot air generator 13 is a hot air blower frame 5...
Furthermore, the suction and exhaust fans 14 are respectively connected to the grain take-out chamber 4, and the dry hot air generated by the hot air generator 13 is sent through the respective drying passages from the hot air blower frames 5, 5 by the suction action of the suction and exhaust fans 14. Exhaust frame 6 via 7 and 8
After being distributed to the grain outlet, the air is discharged to the grain unloading chamber 4, and finally, the suction exhaust fan 14 is used to centrally remove dust from the machine, and when the drying hot air crosses the two rows of drying passages 7 and 8, the filled grains are removed. It is used to dry grains evenly.

Therefore, the lower end of the exhaust frame 6 is communicated with the grain removal chamber 4.

An unloading conveyor 15 is installed at the bottom of the grain unloading chamber 4.
However, there is also a carry-in conveyor 16 at the top of the grain storage tank 2.
are provided respectively, and these two conveyors 1
5 and 16 are connected by an elevator 17 attached to one side of the dryer main body 1, and the grains in the grain storage tank 2 flow down through the grain ventilation drying section 3 and from the grain removal chamber 4 to the grain storage chamber 2. It is becoming more and more cyclical.

The two feed-out rolls 11 and 12, which are mounted on feed-out portions 9 and 10 provided at the ends of the two rows of drying passages 7 and 8, respectively, are rotated by a transmission chain 26 to maintain a roll drive interval. It is rotated intermittently so that it remains constant. That is, freely rotating sprocket wheels 20, 21 are loosely fitted to the rotating shafts 18, 19 of the two feed rolls 11, 12, and these sprocket wheels 20, 21, relay sprocket wheels 22, 23, A transmission chain 26 is suspended between the tension sprocket wheel 24 and the drive sprocket wheel 25.

Two short drive chains 27 and 28 are attached to both sides of the transmission chain 26 with a space therebetween, which will be described later. Sprockets 29 and 30 are fixed to the sprockets 27 and 28, which are rotated intermittently at regular intervals by engagement with the sprockets 27 and 28. The above two drive chains 27, 28
As shown in FIG. 3, one drive chain 27 is mounted at a proper position on the transmission chain 26, and the other drive chain 28 is attached to the two feed rolls from a symmetrical position A of one drive chain 27. 1
It is specified to be attached to the transmission chain 26 at a position shifted in the rotational direction by the distance L between 1 and 12.

Therefore, by attaching the two drive chains 27 and 28 to one transmission chain 26 so that the above conditions are satisfied, the two delivery rolls 11 and 12 can be driven at a constant roll drive interval. Rotate it so that a certain amount of grain is discharged into the grain removal chamber 4.

Effects of the Invention In short, since the present invention has the above-mentioned configuration, the grains supplied into the grain storage tank 2 are transferred to both sides of one transmission chain 26 so that the roll drive interval is constant. The two feed rolls 11 and 12, which are intermittently rotated by meshing with the two drive chains 27 and 28, cause the grains to be ventilated and dried while being made to flow vertically in equal amounts through the drying passages 7 and 8. The grains in the grain removal chamber 4 can be discharged in equal amounts into the grain removal chamber 4, and because a large amount of grain is not temporarily discharged into the grain removal chamber 4 as in conventional devices, the grains in the grain removal chamber 4 can be uniformly discharged. It is not necessary to increase the capacity of the device that returns the flow to the storage tank 2 to the maximum amount, and this can be efficiently achieved with a small capacity device, reducing the power and rotational speed of the grain dryer, reducing the occurrence of grain damage and It is possible to reduce the motor output, and the flow of the grains becomes uniform, resulting in the effect that the condition of carrying the grains into the grain storage tank 2 is good.

[Brief explanation of the drawing]

The drawing shows one embodiment of the feeding unit drive device in the grain dryer according to the present invention, and shows a first embodiment of the feeding unit driving device in the grain dryer according to the present invention.
The figure is a partially cutaway front view showing the feeding unit drive device, FIG. 2 is a partially cutaway plan sectional view of FIG. 1, and FIG. 3 is a front view showing the relative opening relationship between the transmission chain and the drive chain. FIG. 4 is an enlarged perspective view with a portion of the transmission chain cut away, and FIG. 5 is a longitudinal sectional front view of the grain dryer. 2... Grain storage tank, 4... Grain removal room, 7, 8
...2 rows of drying passages, 9, 10...feeding section, 1
1, 12... Feeding roll, 26... Transmission chain, 27, 28... Drive chain, L... Distance length between feeding rolls, A... Symmetrical position.

Claims (1)

[Scope of utility model registration request] Two rows of drying passages were installed vertically between the grain storage tank and the grain take-out chamber, and feed-out rolls each mounted on a shaft were mounted on both sides of the transmission chain in the feed-out portions provided at the ends of the two rows of drying passages. In a device that is sequentially and intermittently rotated by meshing operation with two short drive chains, one of the two drive chains is attached to an appropriate position on the transmission chain, and the other drive chain is connected to one of the drive chains. A feeding unit drive device for a grain dryer, characterized in that it is mounted on a transmission chain at a position shifted in the rotational direction from a symmetrical position of the chain by an interval length between two feeding rolls.