JPS5922471Y2 - Hot air path cleaning device in paddy dryer - Google Patents

Description

[Detailed description of the invention] The present invention is capable of quickly removing and cleaning dust that has entered and accumulated in the hot air duct during drying. This device relates to a hot air duct cleaning device for a paddy dryer that is capable of efficiently drying paddy by preventing particles from entering the hot air duct between the front and rear walls of a ventilation drying drum and the front and rear ends of a divided chevron-shaped flow distribution plate. .

Conventionally, a hot air passage and an exhaust passage are installed vertically in a ventilation drying drum via a paddy flow passage, and as the paddy sequentially flows down vertically in the paddy flow passage, the direction flows from the hot air passage to the exhaust air passage. In a paddy dryer that blows drying air to dry rice to a predetermined moisture content, the rough grain that flows down the paddy flow path during the drying process contains a lot of dust. It enters the hot air path and accumulates, and as the amount of accumulation increases, it blocks the network of the hot air path.
A predetermined amount of drying air is not blown onto the paddy, resulting in a drawback that the drying efficiency is reduced.

Therefore, in order to solve the above-mentioned drawbacks, the present applicant has developed a ventilation chamber for blowing dry air onto circulating paddy, which can be easily disassembled and reassembled for transportation, as described in Japanese Utility Model Application Publication No. 51-144478.・Developed a paddy dryer that facilitates packaging.

However, since the above-mentioned invention is not primarily intended for cleaning the inside of the ventilation chamber, it may be a lie that cleaning the inside of the ventilation chamber cannot be done easily, or that the front and rear ends of the cover plate may be damaged during circulation drying work. There is a drawback that paddy enters the ventilation chamber through the gap formed between the dryer and the front and rear walls of the dryer body, and there is a strong desire to improve this problem.

In view of the above, the present invention has been developed by vertically installing a hot air path with an open top inside the ventilation drying cylinder, and the open part of the hot air path is made up of a plurality of meshes connected in a divisible manner using chevron-shaped connecting fittings and tensioning devices. A chevron-shaped flow divider plate is removably placed and covered, and a pull-out gap formed between the front and rear ends of the divided chevron-shaped flow divider plate and the front and rear walls of the ventilation drying cylinder is attached to the inner surface of the front and rear walls of the ventilation drying cylinder. The dust was covered with a chevron-shaped cover fitting, and when dust entered and accumulated in the hot air path due to continued drying work, the divided chevron-shaped flow divider plate fitted on the top of the hot air path was quickly removed and the dust was deposited. A hot air duct cleaning device in a paddy dryer that enables cleaning to remove dust easily and reliably, and also prevents circulating paddy from entering the hot air duct during drying work. The configuration of the device of the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

Reference numeral 1 denotes a circulation-type paddy dryer constructed by sequentially stacking a tempering tank 2, a ventilation drying cylinder 3, and a take-out tank 4, and in the ventilation drying cylinder 3, there are a plurality of hot air passages 5 and Air exhaust passages 6 are alternately arranged vertically through a paddy flow passage 7, and a payout roll 20 is rotatably mounted on a shaft below the paddy flow passage 7.

The hot air passage 5 is formed with perforated plates 8, 8 on both left and right sides, and has a bottom with an open top 9, and one side of the hot air passage 5 is provided with a hot air generator 10 containing a burner 11.
connected to.

Further, the air exhaust passage 6 is formed by perforated plates 12 on both the left and right sides, the upper part is closed with a chevron-shaped flow dividing plate 13, and the lower open side of the air exhaust passage 6 is connected to the take-out tank 4.

In the open portion 9 provided at the top of the hot air path 5 formed as described above, divided chevron-shaped flow divider plates 14a and 14b, which are divided into a plurality of pieces (two pieces in this embodiment), are placed so as to be removable, respectively. These plural divided chevron-shaped flow divider plates 14 a
, 14b are separably connected to each other via a chevron-shaped connecting fitting 15 and a plurality of tensioning devices 16.

In order that either one of the above-mentioned divided chevron-shaped flow divider plates 14a and 14b can be easily removed from the hot air passage 5, its total length is made shorter than the length of the hot air passage 5, and the front and rear side walls 3a and 3b of the ventilation drying cylinder 3 are connected to each other. A pull-out gap 17a between
, 17b.

Therefore, the above-mentioned divided chevron-shaped flow dividing plates 14a, 14
If you want to remove either one of b from above the hot air path 5, unfasten the tensioning tool 16 and pull out the split chevron-shaped flow divider plate of the one you want to remove while rotating it as shown by the chain line in Figure 2. good.

If such an operation is performed, the divided chevron-shaped flow divider plates 14a, 14
The extraction gap 17 a , 1 formed on the front and rear end sides of b
7b, the front and rear side walls 3a of the ventilation drying cylinder 3,
3b Ring fittings 18a, 1 of the same shape attached to the inner surface
Even if there is 8b, the divided chevron-shaped flow divider plates 14a, 14b
can be easily removed.

Reference numeral 19 denotes a suction exhaust fan disposed on one side of the take-out tank 4.

Next, the operation of the present invention will be explained.

Now, as shown in FIGS. 1 and 2, the divided chevron-shaped flow dividing plate 1 has its mesh connected by the chevron-shaped connecting fittings 15 and the tensioning fittings 16 so that the open parts 9 at the upper part of the hot air path 5 can be divided into each other.
4a and 14b, the tempering tank 2 and the paddy flow path 7
If the inside is filled with paddy and then the hot air generator 10, the feed roll 20, the suction/exhaust fan 19, and other operating members are operated, the drawers formed at the front and rear ends of the divided chevron-shaped distribution plates 14a and 14b The gaps 17a and 17b are covered with ring fittings 18a and 18b to prevent the paddy from entering the hot air path 5 from these parts, and the drying air sucked into the hot air path 5 is removed from the paddy flow path. The paddy is exposed to the paddy as it flows through the ventilation channel 7 toward the exhaust passage 6, and after drying the paddy to some extent, it is discharged into the take-out tank 4 and then returned to the tempering tank 2. At the same time, the dust mixed in the waste hot air and coarse raw materials after being used for drying is concentratedly discharged outside the machine by the suction exhaust fan 19.

By the way, during the above-mentioned circulation drying, some of the dust contained in the coarse grains enters into the hot air path 5 through the mesh of the perforated plates 8, 8 when flowing down in the paddy flow path 7, and accumulates therein. forced,
The amount of accumulation gradually increases and the mesh is blocked, resulting in a situation where a predetermined amount of drying air cannot be blown out.

In such a state, after drying is completed (all the paddy is discharged and the inside of the ventilation drying cylinder 3 is empty), the divided chevron-shaped flow dividing plate 14
Remove the tensioning tool 16 connecting a and 14b,
If either one of the divided chevron-shaped flow divider plates 14 a , 14 b is pulled out while being rotated somewhat as shown by the chain line in FIG.
b is formed, so it can be easily removed by pulling it out,
The upper part of the hot air path 5 is opened.

As a result, the inside can be easily cleaned by inserting a suitable cleaning tool through this opening and removing all accumulated dust.

After the above-mentioned cleaning work is completed, the divided chevron-shaped flow divider plate may be placed on the hot air path 5 again and connected by the fasteners 16.

In short, since the present invention has the above-mentioned specific configuration, even if some of the coarsely mixed dust enters and accumulates in the hot air path 5 during the drying operation, the above-mentioned divided mountain shape The flow divider plates 14a and 14b are easily separated from the angle-shaped connecting fitting 15 by loosening the tensioning tool 16 and removed from the upper part of the hot air path 5, and the dust accumulated inside the hot air path 5 is quickly removed.
The drawer gap 17 formed between the front and rear ends of the divided chevron-shaped flow divider plates 14a, 14b and the front and rear walls 3a, 3b of the ventilation drying cylinder 3 allows the interior to be cleaned well at all times. Since a and 17b are covered with ring fittings 18a and 18b, it is possible to ensure the fixing action of the divided chevron-shaped flow divider plates 14a and 14b, and to reliably prevent the circulating and flowing paddy from entering into the hot air chamber 5. This has the effect of allowing good drying work to be carried out.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, and the first
The figure is a longitudinal sectional front view with a part cut away, FIG. 2 is a longitudinal sectional side view thereof, and FIG. 3 is an enlarged perspective view of the main part with a part cut away. 3... Ventilation drying cylinder, 3 a, 3 b... Front and rear walls of the curve, 5... Hot air path, 9... Opening part, 14 a, 14 b... ...Split chevron flow dividing plate, 15 ... Chevron connection fitting, 16 ... Tightening tool, 17a, 17b ... Drawer gap, 18
a, 18 b... Covering metal fittings.

Claims (1)

[Scope of utility model registration request] A hot air path with an open top is installed vertically, and the open part of the hot air path is covered by removably placing a plurality of divided chevron-shaped flow divider plates, each of which is connected at the joint so that it can be divided into two, using chevron-shaped connecting fittings and fasteners. At the same time, the extraction gap formed between the front and rear ends of the divided chevron-shaped flow divider plate and the front and rear walls of the ventilation drying cylinder is covered with a chevron-shaped covering fitting attached to the inner surface of the front and rear walls of the ventilation drying cylinder. A hot air duct cleaning device in a paddy dryer.