JPH0127605Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing clogging of a seed guide tube in a direct seeding machine.

In other words, in a direct sowing machine configured to allow seeding by extending a seed guide pipe downward from the seed feeder to the rice field side, it is possible to prevent seeds from clogging in the middle of the seed guide pipe or mud, etc. from clogging the lower part of the seed guide pipe. This system is designed to be able to effectively remove and open the pipe using compressed air in the event of a leak.
In this case, the compressed air can be prevented from being blown upwards so that the compressed air can work well, the accuracy of the work can be improved, and the structure can be easily implemented so that it can be carried out suitably.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a side view of the flooded direct seeding machine, B is the machine, and wheels 5 and
A double-swing type axle case 6 with a shaft mounted on the engine E is installed, and both operating handles 7 are extended to the rear, and a compressor 8 and an air tank 9 are installed behind the engine E, and the compressor 8 and the air tank 9 are installed on the operating handle 7 side. A large number of air pipes 11 extend from a solenoid valve 10 of an air tank 9.

At the bottom of the rear of the machine B, there are 3 in the center and on both sides.
A number of floats 12 are arranged in parallel, and a support stand 13 erected above each float 12 is connected to a connecting rod 14.
The floats 12 are connected to each other so that they can be towed by the machine B, and cutouts 15 are formed on both sides of the rear side of each float 12 to open up and down and to the rear. A groove forming body 16 is integrally formed on the lower surface, and a culturing soil body 1 is formed on the lower surface of the float on the rear side of both notches 15.
7 and 17 respectively.

A seed dispensing section A is installed above each support stand 13, and the seed dispensing section A is connected to a dispensing chamber 19 formed so as to communicate with the lower part of the hopper 18.
A feed-out roll 21 having a large number of buckets 20 disposed on its circumferential surface is rotatably mounted on a shaft within the same structure as the conventional structure, and the rear part of the feed-out roll 21 is inserted into the lower part of the shooter 2b. In this case, both seed guide tubes 2, 2 are branched, and the respective lower end ports 2a, 2a are connected to the notches 15, 15 of the float 12.
A small air supply port 3 is formed in the circumferential wall in the middle of both seed guide tubes 2, 2 in a substantially perpendicular direction, and a cap 3a protrudes outward from each air supply port 3. The ends of the air pipes 11 are fitted into the air pipes 11 to communicate with each other, and inside the part of the seed guide tube 2 that is near the upper part of the air supply port 3, there is usually a pipe extending downward until it hits the protrusion 22. A check valve 4, which can open the inside vertically and close the inside by rotating upward until it hits the protrusion 23 by air pressure from below, is freely rotatably mounted via a support shaft 4a. Configure.

Note that the check valve 4 may be formed of a rubber plate, or may be constructed by disposing a large number of check valves 4 as shown in FIG. 6.

Therefore, during seeding work, each float 12 indexed by this machine B is in a state where grooves are made on the rice field by each groove-making body 16 while sliding on the rice field,
When each bucket 20 of the feeding roll 21 that rotates as shown by arrow A picks up a certain amount of seeds and releases them into the shooter 2b, the seeds flow down inside the seed guide tubes 2, 2 and directly pass through the lower end opening 2a, 2a
As shown by the arrow B, the soil is poured into a trench in the rice field through the notch 15, and then the soil is covered with soil bodies 17, 17, and direct sowing is performed.

In this case, if the seeds become clogged in the middle of the seed guide tube 2 or if the inside of the lower end port 2a becomes clogged with mud, the operator can open the solenoid valve 10 to allow the seeds to flow through the air supply port 3. Compressed air can be supplied into the guide tube 2 as shown by arrow C, and the air is forced out in the vertical direction as shown by arrow D, as shown in FIG. Then, the check valve 4 rotates upward until it hits the protrusion 23 and closes the inside of the seed guide tube 2 above, so that the air cannot escape upward.
As pressure builds up downward, the clogged seeds and mud can be pushed downward and expelled from the lower end opening 2a while being removed.

In this way, when the supply of compressed air is stopped after opening the inside, the check valve 4 rotates downward under its own weight until it hits the protrusion 22, and as shown in FIG. This means that it can be opened.

As described above, the present invention is a direct sowing machine configured so that seeds can be sown by extending the seed guide tube 2 downward from the seed feeding section A toward the field side, and compressed air can be injected into the middle of the seed guide tube 2. The air supply ports 3 are arranged in a substantially perpendicular direction to communicate with each other, and the inside of the part of the seed guide tube 2 near the upper part of the air supply ports 3 is normally opened downward and is opened from below. Since the check valve 4, which can be rotated upward and closed by the air pressure of If the air conditioner is clogged, compressed air can be supplied from the air supply port 3 to close the check valve 4, allowing the compressed air to blow upward and cause obstruction. Also, by closing the check valve 4, the air pressure can be applied strongly to the clogged side and removed from the inside of the seed guide tube 2 to ensure that the inside can be opened properly, improving work accuracy. It has the advantage that it can be implemented conveniently with a simple structure.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of a submerged direct seeding machine, Fig. 2 is an enlarged sectional view of a part thereof,
3 is a rear view of the part shown in FIG. 2, FIG. 4 is a sectional view of the main part, FIG. 5 is an explanatory view of the operation of FIG. 4, and FIG. 6 is a plan sectional view of another embodiment. A... Seed feeding section, 2... Seed guide tube, 3...
...Air supply port, 4...Check valve.

Claims (1)

[Scope of utility model registration request] In a direct sowing machine configured to be able to sow seeds by extending a seed guide tube downward from the seed feeding part A toward the field side, an air supply port 3 through which compressed air can be injected is arranged in the middle of the seed guide tube in a substantially orthogonal direction. The inside of the seed guide tube near the upper part of the air supply port 3 is normally opened downward and rotated upward by air pressure from below. A device for preventing clogging of a seed guide tube, characterized in that a check valve 4 whose interior can be closed is rotatably mounted.