JPS6049830B2 - Method for preventing dust scattering from the discharge gutter of a paddy dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for discharging and collecting dried paddy dried by the circulation action of drying air outside the machine using a discharge gutter. To provide a method for preventing immediate dust from scattering from a discharge gutter in a rice paddy dryer, which can surely prevent dust from blowing out and scattering inadvertently, and can provide a trowel for hygienically and efficiently collecting dried rice.

Conventionally, the drying air generated in the hot air generation cylinder is circulated from the hot air generation cylinder through a ventilation drying and take-out tank, and is concentratedly discharged outside the machine by a suction exhaust fan, and then flows vertically down inside the ventilation drying cylinder. A paddy dryer that dries the paddy, or a paddy dryer that can discharge the dried paddy after drying to a desired location outside the machine through a discharge gutter from an elevator attached to one side of the paddy dryer. are the patent documents of 1973, respectively, before this application.
This method is known as described in Japanese Utility Model Publication No. 36753 and Japanese Utility Model Publication No. 47-16771.

In the above-mentioned known paddy dryer, during the collection work in which dried paddy is discharged outside the machine from the discharge gutter via the elevator, the elevator is generally operated, and the suction exhaust fan or the blower for generating hot air is operated. This was done with the vehicle completely stopped.

However, during the operation of dry paddy discharge and collection work, a considerable amount of wind is generated inside the elevator by rotating packets, and the generated wind is discharged from the end of the discharge gutter to the outside along with dried paddy and mixed dust. This has the drawback of not only causing a significant drop in work efficiency as it ejects, scatters around, and flies up to hit workers, but also makes the workplace unsanitary. Therefore, in the present invention, when the dried paddy dried by the circulating drying air is discharged and collected outside the machine through a take-out tank, an elevator, and a discharge gutter which are connected in communication with each other, the suction exhaust By operating the wind fan and closing the intake port of the hot air generation cylinder or the communication part between the hot air generation cylinder and the ventilation drying cylinder using the closing valve, air is directed to the suction exhaust fan through the hot air generation cylinder, ventilation drying cylinder and take-out tank. The wind path that used to flow through
The air path is properly changed so that the outside air taken in from the end of the discharge gutter passes through the discharge gutter, the elevator, and the take-out tank, and then flows toward the suction/exhaust fan. This method also prevents the wind and dust generated in the elevator from blowing out or flying up from the end of the discharge gutter to the surrounding area, making it possible to collect dried paddy hygienically and efficiently. The purpose of this invention is to obtain a method for preventing dust from scattering from gutters. In view of the above, in order to achieve the above object, the present invention provides a method in which the dried paddy dried by the circulation action of the drying air is discharged and collected outside the machine via a take-out tank, an elevator, and a discharge gutter. In such cases, operate the closing valve installed at the inlet of the hot air generating cylinder or the communication part between the hot air generating cylinder and the ventilation drying cylinder in the direction that the inlet or the communication part is closed. The atmosphere that used to flow towards the suction exhaust fan through the drying cylinder and take-out tank has been changed to a style where outside air is taken in from the end of the discharge gutter and flows through the exhaust gutter, elevator and take-out tank towards the suction exhaust fan. A method for preventing dust from scattering from a discharge gutter in a paddy dryer characterized by a change in direction,
According to this method of preventing dust from scattering from the discharge gutter in a paddy dryer, when collecting and discharging dried paddy, the operation of the suction and exhaust fan is not stopped, and the closing valve is simply used to close the intake port of the hot air generating cylinder or the hot air. Hot air generation cylinder and ventilation drying only by closing the communication part between the generation cylinder and the ventilation drying cylinder? The air flowing through the exhaust tank and the suction/exhaust fan are used to centrally exhaust the air outside the machine, and instead, the outside air is sucked in from the end of the exhaust gutter by the suction action of the suction/exhaust fan, or the exhaust gutter, elevator, etc.
By switching to a style where the air is concentrated and exhausted outside the machine through the take-out tank and suction/exhaust fan, the outside air can be sucked and distributed from the end of the exhaust gutter through the elevator and into the take-out tank, which improves drying of paddy. During collection and discharge work, the wind and dust generated inside the elevator during operation of the elevator are prevented from being blown out and scattered around from the end of the discharge gutter, and the dust is concentratedly removed outside the machine via the extraction tank by the suction exhaust fan. Only the dry paddy can be smoothly discharged from the discharge gutter, and the dry paddy collection and discharge work can be carried out hygienically and efficiently.Dried paddy in a stagnant state is removed from the take-out tank through the elevator and the discharge gutter to the outside of the machine. During the discharge process, the suctioned and circulated outside air gradually cools the material to room temperature, thereby facilitating subsequent adjustment work.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a paddy dryer using the method of the present invention shown in the accompanying drawings will be described below.

In the drawing, 1 shows a tempering tank 2 in which the paddy exposed to hot air has been allowed to stand for a period of time in the upper stage and has sufficient capacity for the paddy itself to carry out the conditioning action, and a middle stage shows the paddy that has fallen by gravity from the tempering tank 2. The main body of the dryer consists of a ventilation drying cylinder 3 that blows hot air onto the dryer, and a take-out tank 4 that collects the paddy that has been exposed to hot air and dried in the lower stage, stacked one on top of the other in a three-dimensional manner, and the whole is formed into an oblong rectangular tube shape. do.
The peripheral wall of the ventilation drying cylinder 3 is shielded by a blind plate, and inside there is a hot air blowing frame 5 whose front side is in communication with the hot air generating cylinder 7 installed on the front of the dryer main body 1, and whose left and right sides are formed into hot air surfaces. and a hot air exhaust frame 6 whose lower side is in communication with the above-mentioned take-out tank 4 and whose left and right sides are formed with hot air surfaces are alternately arranged so that a paddy flow path 8 of the same width is formed between the frames 5 and 6. The feed rolls 8a are installed vertically, and each payout roll 8a is provided below the paddy flow path 8.
is rotatably arranged. One side of the take-out tank 4 is equipped with a suction exhaust fan 9 having an appropriate suction force, and the bottom of the take-out tank 4 is equipped with a discharge side inserted into the lower part of a lift 10 attached to one side of the dryer main body 1. The transfer screw 11 is used as a storage shaft to transport the paddy to the lower part of the elevator 10.

12 is a dry paddy discharge gutter installed on the upper part of the elevator 10 so that the inside communicates with the elevator 10;
The discharge side end of the discharge gutter 12 is either opened onto a suitable container 13 or connected to a supply hopper 14 attached to one side of the lower part of the elevator 10.

A burner 15 is installed in the hot air generation cylinder 7 described above,
While the outside air taken in through the intake port 16 opened on the front intake side of the hot air generation cylinder 7 is sucked and distributed inside the hot air generation cylinder 7, it is directly mixed with the combustion flame of the burner 15, and is converted into dry air at an appropriate temperature to the hot air blower frame 5. An air passage 17 is formed through which air is concentratedly discharged outside the machine by a suction exhaust fan 9 via a paddy flow passage 8, a hot air exhaust frame 6, and a take-out tank 4. Reference numeral 18 denotes a blockage valve for blocking the intake port 16 of the hot air generation cylinder 7 so that no dry hot air flows along the air gap 17. It can be opened and closed freely.

Further, as a means for blocking the flow of the air filter 17, this can also be done by a blocking valve 19 shown by a chain line in FIG.

In this embodiment, a blockage valve 19 that can vibrate in the left-right direction is pivotally supported at the position of the ventilation port 20 that connects the hot air generation cylinder 7 and the hot air blower frame 5 installed vertically in the ventilation drying cylinder 3.
The ventilation port 20 is opened and closed by the vibration operation of the closure valve 19. Reference numeral 21 denotes a carry-in gutter installed horizontally at the top of the dryer main body 1 so as to communicate with the tempering tank 2. They are each connected to a discharge section provided at the top of the elevator 10, and a switching valve (not shown) that can be rotated left and right is pivotally supported at the boundary between the discharge gutter 12 and the carry-in gutter 21. Then, by rotating the switching valve, the elevator 10 and the discharge tank 1 are connected to each other.
2, the paddy is supplied from the elevator 10 into the carry-in gutter 21 to carry out paddy loading or circulation drying work, and the connection between the elevator 10 and the carry-in gutter 21 is established by the switching valve. When the drain is cut off, the dried rice discharged from the upper part of the elevator 10 is discharged and collected outside through the discharge gutter 12.

Reference numeral 22 denotes an air path through which the outside air sucked into the discharge gutter 12 from the discharge end of the discharge gutter 12 passes through the inside of the elevator 10 and the inside of the take-out tank 4, passes through the suction exhaust fan 9, and is concentratedly exhausted outside the machine. be.

Next, its effect will be explained.

Now, after operating the upper part of the elevator 10 and the supply side of the carry-in gutter 21 to be in a connected state, paddy is filled into the dryer main body 1 through the lift 10 and the carry-in gutter 21.

When a predetermined amount of paddy remains in the paddy channel 8 and the tempering tank 2, the supply is stopped, and then the blocking valve 18 or 19
is operated to fully open the intake port 16 or the communication portion 20 and start both the burner 15 and the suction/exhaust fan 9. The outside air sucked into the hot air generation cylinder 7 by the suction action of the suction exhaust fan 9 is stirred and mixed with the combustion flame of the burner 15 and quickly becomes dry hot air, which exits from the hot air blower frame 5 and flows through the paddy flow path 8. In the process of crossing, it is placed along the filled paddy, which is then dried.
Furthermore, the discharged air that is directed along the rice enters the hot air exhaust frame 6 and forms a wind wall 17 that exits from the take-out tank 4. However, take-out tank 4
Since the suction and sorting air flows towards the suction and exhaust fan 9 inside the machine, this exhaust air is actively concentrated and exhausted to the outside of the machine by the suction and exhaust fan 9, and is sequentially taken out by the rotation of the delivery roll. The rice grains and dust that have fallen into the tank 4 are suctioned and sorted by the suction air. As a result, dust with a light specific gravity is separated from the paddy and concentratedly removed outside the machine, and the paddy is transported to the lower part of the elevator 10 by the transfer screw 11, and then passed through the elevator 10 and the carry-in gutter 21 to the upper part of the tempering tank 2. Performs circulation work where water is returned to the water.

Therefore, once the paddy is repeatedly circulated by the elevator 10 and dried to a predetermined moisture content, the dried paddy is discharged from the elevator 10 through the discharge gutter 12 into an arbitrary container 13. When collecting and discharging dried paddy, first, the combustion of the burner 15 is stopped, and at the same time, the intake port 16 or the ventilation port 20 of the hot air generating cylinder 7 is closed by the closing valve 18 or 19, and the elevator 10 is closed. The upper part of the drain gutter 12 and the discharge gutter 12 are in communication with each other. Then, due to the suction action of the suction exhaust fan 9, the air is concentratedly exhausted outside the machine by the suction exhaust fan 9 through the hot air generation cylinder 7, the hot air blower frame 5, the paddy channel 8, the hot air exhaust frame 6, and the take-out tank 4. The air flow 17 that was being circulated is completely stopped, and instead, outside air is sucked into the exhaust gutter 12 from the end of the exhaust gutter 12 by the suction action of the suction exhaust fan 9, and then the inside of the elevator 10 and Air flow 2 flows through the take-out tank 4 and is concentratedly exhausted outside the machine by the suction exhaust fan 9.
2 is formed. As a result, a suction sorting wind is generated in the discharge gutter 12 that flows in the opposite direction to the drying/transfer direction of the paddy discharged outside the machine. Even if the dust is removed, all of the dust is sucked and removed along the air path 22 through the discharge gutter 12 and the elevator 10 into the take-out tank 4 without being ejected and scattered around the tip opening of the L outlet gutter 12. Finally, the dust is concentratedly removed to the outside of the machine by the suction exhaust fan 9. Therefore, by this suction action, the dust that has flown up inside the elevator 10 can also be removed by suction, and the dried paddy that has become stagnant due to the drying operation can also be removed along the air passage 22. The dried paddy is gradually cooled down to room temperature by contacting the cool outside air that is suctioned and circulated, thereby minimizing crushing of the dried paddy during the subsequent conditioning work. In short, according to the method of the present invention, the air passage 17 is
Since the outside air can be completely stopped and instead be diverted to the air path 22 that goes into the take-out tank 4 via the discharge gutter 12 and the elevator 10, a lot of waste air is removed from the discharge gutter 12 along with the dried paddy when the dried paddy is discharged. Perhaps because it is possible to carry out the collection and discharge of dried paddy efficiently and hygienically by preventing dust from blowing out and being scattered around, the dust that flies up inside the elevator 10 is also prevented. In addition to being able to remove the dust by suction and concentrate the dust by using the suction/exhaust fan 9, it is also possible to rapidly slowly cool the dried rice to room temperature.

[Brief explanation of the drawing]

The drawings show an embodiment of a rice dryer using the method of the present invention, in which FIG. 1 is a partially cutaway side view, FIG. 2 is a partially cutaway enlarged front view, and FIG. 3 is a partially cutaway side view. FIG. 2 is an enlarged perspective view of the main part with a part cut away. 3... Ventilation drying cylinder, 4... Taking out tank, 7... Hot air generation cylinder, 9... Suction exhaust fan, 10... Lifting machine, 12
...Discharge gutter, 16...Intake port, 17...Air path that passes through the hot air generation cylinder, ventilation drying cylinder, and take-out tank to the outside of the machine by a suction exhaust fan, 18, 19...Closing valve , 20・
...Ventilation port, 22...An air path that circulates to the outside of the machine by a suction exhaust fan via a discharge gutter, an elevator, and a take-out tank.

Claims (1)

[Claims] 1 Inside the dryer body, the loading gutter, conditioning tank, ventilation drying cylinder, and take-out tank are stacked three-dimensionally in order from the upper stage to the lower stage,
A hot air generation cylinder communicating with the ventilation drying cylinder is installed in the front part of the ventilation drying cylinder, and a suction exhaust fan is installed on one side of the take-out tank, and a lower part of the dryer body is connected to the take-out tank on one side of the dryer main body. Equipped with an elevator whose upper part is connected to the carry-in gutter and the discharge gutter through switching valves, the drying air generated in the hot air generation cylinder is sucked and is sequentially flowed down the ventilation drying cylinder vertically by the suction action of the exhaust fan. In a device that is configured to dry paddy by circulating it around the paddy, when the dried paddy that has been dried by the distribution action of the drying air is discharged and collected outside the machine via a take-out tank, an elevator, and a discharge gutter, Operate the closing valve disposed at the inlet of the hot air generation cylinder or the communication part between the hot air generation cylinder and the ventilation drying cylinder in the direction in which the inlet or the communication part is closed, and remove the hot air generation cylinder, ventilation drying cylinder, and the ventilation drying cylinder. The air path that previously flowed through the tank toward the suction exhaust fan is changed to the air path through which outside air taken in from the end of the exhaust gutter passes through the exhaust gutter, the elevator, and the take-out tank toward the suction exhaust fan. A method for preventing dust scattering from a discharge gutter in a paddy dryer, characterized by: