JPH0114580Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is to discharge the grains loaded into a grain tank installed in the aircraft body through a discharge port provided at the bottom of the grain tank, and return them to the grain tank using a grain transfer device. In a grain drying device that sends and dries drying air (hot air) while circulating the grain back, the drum shutter installed at the outlet of the grain dryer is used to control the amount of grains discharged from the outlet of the grain dryer. This invention relates to an improvement in a sealing device that seals between the rim of an outlet and the rim of an outlet.

The amount of outflow from the outlet in the grain dryer of the above type is regulated by a slit-shaped slit formed between the butted lower ends of a pair of opposing inclined sink plates on the left and right sides of the bottom of the grain tank. A drum shutter is provided with a slit-shaped opening along the axial direction in a part of the peripheral wall at the discharge port of the drum shutter, and the left and right side surfaces of the peripheral wall of the drum shutter are provided with a grain flow path on each upper surface side of the left and right inclined sink plates. The lower end of the drum shutter is dammed, the lower circumferential surface of the peripheral wall is positioned so as to block the discharge port, and the drum shutter is supported by a rotary shaft so that it rotates alternately in forward and reverse directions. When the slit-shaped opening provided in the peripheral wall of the drum shutter faces each grain flow path on the left and right inclined sink plates, the drum shaft is rotated through the rotation in which the direction of rotation is alternately switched. This is done by allowing the grains that have flowed into the tank to flow out through the opening when the opening rotates to a position facing the discharge port.

At this time, there is a narrow gap between the outer surface of the peripheral wall of the drum shutter and the lower end of the sloping sink plate to prevent grains from leaking from there, but the grains will get caught within that gap. In order to prevent this, a sealing member made of a flexible material such as rubber is provided there, and the sealing member is slidably contacted with the outer surface of the peripheral wall of the drum shutter in the form of a scraper.

By the way, as described above, the sealing member installed to seal between the lower end of the inclined sink plate forming the discharge port and the peripheral surface of the drum shutter is a part of the grain stream formed on the upper surface side of the inclined sink plate. If the drum shutter has one path and the rotation direction of the drum shutter is in one direction, the angle in the direction in which the inclined sink plate projects from the lower end toward the outer surface of the drum shutter peripheral wall. There is no problem with setting the angle of repose above the grain repose, but two grain flow paths face one drum shutter from the left and right, and the rotation of the drum shutter alternates between forward and reverse. In such a case, problems will arise if the direction in which the seal member projects toward the outer surface of the peripheral wall of the drum shutter is set to be greater than the angle of repose. That is, it is fine when the drum shutter is rotating in the direction in which the seal member is inclined, but when the drum shutter is rotating in the opposite direction, the protruding edge of the seal member touches the peripheral wall of the drum shutter. It became like that,
Biting occurs between them, causing damage to the grains and wear and tear on the protruding edge of the sealing member. From this, the sealing member has a substantially horizontal angle that is much looser than the angle of repose so that it faces the outer surface of the drum shutter's peripheral wall at approximately the same angle even when the drum shutter rotates in the forward or reverse direction. It is installed so that it protrudes toward the outer surface of the peripheral wall of the drum shutter at an angle close to .

Therefore, when the grain discharge operation is completed, there are no more grains flowing down the upper surface of the inclined sink plate, and the grains on the upper surface of the sealing member are removed from the outer surface of the peripheral wall of the drum shutter. When the pressure of the grains pushing out toward the seal member disappears, the flow of the grains on the upper surface of this sealing member becomes poor, and the grains tend to stagnate there, which completes the grain discharge operation. When the rotation of the drum shutter is stopped, grains remain in the corner formed by the upper surface of the seal member and the outer surface of the peripheral wall of the drum shutter. In order to remove the remaining grains, the drum shutter must be left running for a long time, or a cleaning tool must be inserted into the machine to sweep out the remaining grains. There is a problem with the operation.

Furthermore, since the seal member is made of a soft material, it wears out quickly, so it must be replaced and repaired frequently, but this work is troublesome.

The present invention was developed to solve these problems, and includes a drum shutter that rotates alternately between forward and reverse directions, and an inclined sink plate on both the left and right sides of the drum shutter. The position of the lower end prevents grains from stagnating on the upper surface of the seal member when the seal member is installed so as to protrude from the lower end of the inclined sink plate toward the outer surface of the peripheral wall of the drum shutter. Although it is a win, it is installed in a position that does not cause damage or jamming, and it allows the removal of residual grains quickly and reliably during the grain discharge operation, and it is easy to replace the sealing member when it wears out. The aim is to provide new means to make it easier.

In the present invention, as a means to achieve this objective, a portion of the surrounding wall is provided at the outlet formed between the lower end portions of the pair of inclined sink plates facing each other on the left and right sides of the bottom of the grain tank. A drum shutter having a slit-shaped opening along the axial direction is mounted on a shaft so that it rotates alternately in forward and reverse directions.
In a sealing device for a discharge port of a grain drying device, the lower end portion of the inclined sink plate is provided with a seal member for sealing a gap between the lower end portion of the left and right inclined sink plates and the outer surface of the peripheral wall of the drum shutter. A wide gap is formed between the outer surface of the peripheral wall of the tar and the outer surface of the outer peripheral wall of the tar, which serves as an outlet through which the grains flow out. A support member for supporting the seal member is rotatably mounted on the aircraft body so that the supporting seal member opens and closes the wide interval, and is detachably mounted so that the support member can be taken out of the aircraft while supporting the seal member. This is to suggest ways to keep the information in place.

Next, an example of implementation will be described in detail with reference to the drawings.

In Fig. 1, 1 is a circulating grain drying device A.
The fuselage is shaped like a tower, and its inner cavity is
As shown in FIG. 2, there are ventilated bulkheads 20, 2 which are stretched in the form of a double wall inside the left and right side walls 10, 10 of the fuselage 1 in the majority of the area except the bottom.
A grain tank 2 is provided, which is formed by sharing the front and rear walls 11, 11 of the aircraft 0 and the aircraft body 1. The grain tank 2 is equipped with a discharge port a at the bottom, and the partition wall serving as the bottom plate of the grain tank 2 is formed into a pair of left and right inclined sink plates 21, 21 that are tilted downward toward the discharge port a. A space formed between the upper surface of this inclined sink plate 21 and the partition wall 30 of the air guide path 3, which is made of an air-permeable partition wall 30 installed in the center of the inner cavity of the grain tank 2, is Tank 1
The grain flow paths b and b are configured to cause the grains inside to flow toward the discharge port a, and thereby,
The above-mentioned discharge port a is substantially located at the opposite lower end edges 21a, 21 of the pair of inclined sink plates 21, 21.
Rather than being an open opening formed between the grain flow paths b and b, they are formed at each terminal end of the grain flow paths b, respectively, so that they are opposed to each other in a pair on the left and right.

Reference numeral 4 denotes a drum shutter installed at the discharge port a to control the amount of grain flowing out, and as shown in FIG.
The outlet ports a, a of the two grain flow passages b, b arranged to be located within the open opening formed between the lower end edges 21a, 21a of the grain flow channel b, facing each other by the peripheral wall 40 thereof.
By driving its rotating shaft 41 through a deceleration mechanism equipped with a reversing mechanism, it rotates in forward and reverse directions one rotation at a time, and a slit-shaped opening 42 in the peripheral wall 40 opens. A state position in which, when facing the discharge ports a, a of the grain channels b, b, grains are received into the inner cavity from the grain channels b, b, and the received grains are opened to the lower surface side of the opening 42. By allowing the grains to flow out from the opening 42 at this time, the grains are successively fed out at a predetermined flow rate.

As shown in FIG. A gap is formed between the slanted flow plate 21 and the drain plate 21 faces a position separated from the peripheral wall 40 of the drum shutter so that the gap becomes an outlet W through which the grains freely flow out from the lower edge of the inclined flow plate 21.

Reference numeral 5 denotes a support member disposed on the lower surface side of the lower end portion of the inclined sink plate 21, which has a downward cross-section and has flanges 50, 50 that widen to both sides on the opening side, as shown in FIG. Both ends of the support shaft 51, which is formed in a channel shape and passes through the channel in the longitudinal direction, are connected to the first
As shown in the figure, the front and rear walls 11 of the aircraft 1,
11, the lower end side is pivoted to advance and retreat with respect to the inclined sink plate 21, as shown by the arrow in FIG. 3. The lower surface side of the support member 5 is made of a flexible material such as a cloth or a rubber plate, and has both side edges formed wide so as to protrude further laterally from the laterally expanding flanges 50, 50. The sealing member 6 is attached so as to be symmetrical with respect to the left and right center lines of the support member 5 passing through the support shaft 51, and the support member 5 is attached to the support member 5 along the support shaft 51.
By rotating around the center, this seal member 6
As shown in the figure, it is possible to switch between a state in which it slides into contact with the outer surface of the peripheral wall 40 of the drum shutter 4 and closes the aforementioned outlet W, and a state in which the outlet W is opened as shown in FIG. In addition, in the normal state, the support member 5 is in a state where the seal member 6 opens the outlet W as shown in FIG. By operating the installed operating unit 52, the support shaft 5
1 to the state shown in FIG. 53, the state shown in FIG. 4 is maintained.

Note that a seal member 6 is provided on the lower surface of the support member 5 so as to be symmetrical about the center line of the support member 5.
When wear occurs on the side opposite to the drum shutter 4, the left and right support members 5, 5 should be replaced, or the support member 5 should be rotated 180 degrees when viewed from the plane. This is a replacement/repair seal member that can be rotated and reversed to make new sliding contact with the drum shutter 4. For this purpose, it is a seal member that fits into the locking rod 7 described above. The matching hole 53 may be provided at a position where it will fit with the locking rod 7 again when the support member 5 is interchanged from side to side or reversed from front to back, or a spare hole may be provided at a new location to accommodate the new support member 5. It is designed to be provided.

In the illustrated embodiment, 80 is the grain tank 2.
A hot air generator 81 generates drying air (hot air) to be sent to the grains stuck in the interior through the air guide path 3; 82 is a suction blower with a suction port communicating with the exhaust duct 81; 83 is a drum shutter 4; 84 is a grain lifting machine installed in parallel with the machine body 1; 85 is a conveyor conveyor horizontally mounted on the bottom of the machine body 1 in order to carry out the grains fed out of the machine; The screw conveyor 85 is shown at its starting end 85a.
is in communication with the discharge tube at the upper part of the grain lifting machine 84 in a switchable manner with a take-out gutter 87 by means of a shutter 86, and the terminal end 83a of the screw conveyor 83 for carrying out is connected to the overflow of the grain lifting machine. I've let it happen.

The embodiment device constructed as described above operates as follows.

The side edge of the sealing member 6 made of a flexible material such as rubber supported by the supporting member 5 is brought into contact with the peripheral wall 40 of the drum shutter 4 as shown in FIG. If the drum shutter 4 is maintained at
is sealed by the seal member 6 supported by the support member 6, and the discharge ports a, a of the grain flow paths b, b are connected to the peripheral wall 40 of the drum shutter 4 and the seal member 6 made of a flexible material and connected thereto. It is sealed so that there is no grain leakage.

When the drum shutter 4 is driven in this state, the sealing member 6 comes into sliding contact with the peripheral wall 40 of the drum shutter 4, and the drum shutter 4 rotates while the aforementioned grain leakage is prevented.
A slit-shaped opening 42 provided in the peripheral wall 40 of the drum shutter 4 serves as the outlet a of the grain flow path b,
Only the grains that have flowed into the inner cavity of the drum shutter 4 from the opening 42 when facing the drum shutter 4 are flowed out when the opening 42 is exposed to the outside beyond the sealing part of the sealing member 6, This results in
The grains will be discharged to the outside with a precise flow rate.

Next, when the drying of the grains in the grain drying device A is completed, the drum shutter 4, the screw conveyor 83 for discharge, and the grain lifting machine 84 are operated to dry the grains in the grain dryer A. When the operation of the drum shutter 4 and the like is stopped upon completion of the removal operation, the supporting member 5 is rotated by operating the operating section 52. If so, the sealing member 6 attached thereto rotates, and the lower edge 21 of the inclined sink plate 21 rotates.
When the outflow port W, which is widely formed between the drum shutter a and the peripheral wall 40 of the drum shutter 4, is opened, and the operation of the drum shutter 4 is stopped, the external surface of the peripheral wall 40 of the drum shutter 4 and the sliding contact there. The grains remaining in the corner formed by the contacting seal member 6 flow out from this widely open outlet W.

Next, when the seal member 6 becomes worn due to sliding contact with the peripheral wall 40 of the rotating drum shutter 4, remove the support members 5, 5 located on both sides of the drum shutter 4 from the body 1, respectively. The seal member 6 together with the support member 5 can be taken out of the fuselage 1, the seal member 6 can be replaced outside the fuselage 1, and once that work is completed, the support member 5 can be assembled to the fuselage 1. The member 6 can be replaced much more easily.

As explained above, the sealing device for the discharge port in the grain drying device according to the present invention is formed between the lower ends of the pair of left and right inclined sink plates at the bottom of the grain tank 2. A drum shutter having a slit-shaped opening along the axial direction in a part of the peripheral wall is mounted on a shaft so that it rotates alternately in forward and reverse directions, and the lower end portion of the inclined sink plate is mounted on the discharge port a. In the sealing device for the discharge port of the grain drying device, which is provided with a sealing member that seals between the outer surface of the peripheral wall of the drum shutter and the outer surface of the peripheral wall of the drum shutter, the left and right inclined sink plates 2
A wide gap W is formed between the lower end of the drum shutter 1 and the outer surface of the peripheral wall 40 of the drum shutter 4, which serves as an outlet through which the grains flow out.
is formed wide to fill the wide gap W, and the support member 5 that supports the seal member 6 is formed wide so that the seal member 6 that supports the seal member 6 fills the wide gap W.
Since it is installed in the machine body 1 so that it can be rotated freely to open and close, and also detachably so that it can be taken out of the machine while supporting the seal member 6, the drum shutter can be switched alternately between forward and reverse directions. rotates, and
By positioning the lower ends of the inclined sink plates on the left and right sides of the drum shutter, a sealing member is installed so as to protrude from the lower ends of the inclined sink plates toward the outer surface of the peripheral wall of the drum shutter. At times, grains tend to stagnate on the upper surface of the sealing member, but it is necessary to install it in a position that will not cause damage or jamming, and to quickly and reliably discharge residual grains during grain discharge operations. Moreover, when the seal member becomes worn out, it becomes easier to replace the seal member.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a grain drying device that can implement the present invention, Fig. 2 is a longitudinal sectional front view of a portion of the same device, and Fig. 3 is a longitudinal sectional front view of the main part of the same device;
FIG. 4 is an explanatory diagram of the operation of the main parts of the same. Explanation of drawing symbols, A... Grain drying device, W...
Outlet, a... Discharge port, b... Grain flow path, 1... Body, 10... Side wall, 11... Machine wall, 2... Grain tank,
20... Breathable bulkhead, 21... Inclined sink plate, 2
1a...lower end edge, 3...air guide path, 30...breathable partition wall, 4...drum shutter, 40...peripheral wall, 41...rotating shaft, 42...opening, 5...support member, 50... Flange portion, 51... Support shaft, 52... Operation portion, 53... Engagement hole, 6... Seal member, 7...
... Locking rod, 80 ... Hot air generation device, 81 ... Exhaust duct, 82 ... Suction blower, 83 ... Screw conveyor for carrying out, 83a ... Terminal part, 84
... Grain lifting machine, 85 ... Screw conveyor for tensioning, 85a ... Starting end, 86 ... Shutter, 8
7...Takeout gutter.

Claims (1)

[Scope of utility model registration request] A pair of inclined sink plates 21 facing the bottom of the grain tank 2,
The drum shutter 4 is provided with a slit-shaped opening 42 along the axial direction in a part of the peripheral wall 40 at the slit-shaped discharge port a formed between the butted lower ends of the drum shutters 21, The left and right side surfaces of the peripheral wall 40 are arranged so as to dam the lower ends of the grain flow passages b and b on the upper surface sides of the pair of inclined flow plates 21 and 21 to block the discharge port a, and the rotary shaft 41 A sealing member 6 made of a flexible material such as rubber supported by a support member 5 is installed at the lower end portion of the inclined sink plate 21, 21 so as to rotate alternately in forward and reverse directions. In a sealing device for a discharge port of a grain drying device mounted on the machine body 1, arranged so as to seal between the lower ends of the plates 21, 21 and the outer surface of the peripheral wall 40 of the drum shutter 4,
A wide gap W is formed between the lower end of each of the inclined flow plates 21 and the outer surface of the peripheral wall 40 of the drum shutter 4, and the gap W serves as an outlet through which the grains flow out to the outside. 6 is formed wide to fill the wide gap W, and the sealing member 6
The supporting member 5 is mounted on the fuselage 1 so that the supporting seal member 6 can be freely rotated to open and close the wide gap W, and can be freely removed so that it can be taken out of the machine while supporting the seal member 6. A sealing device for a discharge port in a grain drying device.