JPH0524657A - Tank structure of seeding plant - Google Patents

Abstract

(57) [Abstract] [Purpose] A tank for temporarily storing soil for floor soil or covering soil, and a soil supply device for putting soil in the tank into a nursery box sent on a conveyor are provided. In the tank structure of a seeding plant equipped with a feeding device that takes out the soil from the storage part and discharges it into the tank from the opening on the top surface of the tank, if a partition plate for preventing soil rolling is placed in the tank, the partition plate Make it difficult for the bottom bridge to be clogged with soil bridges. [Structure] On the upper surface of the soil in the tank 7, a cylindrical partition plate 17 that stops the soil from rolling toward the outer frame portion 7b of the tank 7 is arranged in the tank 7, and the bottom portion 7c of the tank 7 and the partition 7c are separated from each other. In the soil passage 19 formed between the lower side portion 17a of the plate 17, the width of the passage 19 in the horizontal direction is set to be different at each position of the lower side portion 17a of the partition plate 17, and a tubular shape is formed. The partition plate 17 is formed in the shape of a lower recess having a smaller cross-sectional area as it goes downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding plant in which soil and seeds are continuously put in a nursery box for growing seedlings for planting crops, and is a tank for temporarily storing soil for floor soil or covering soil. Concerning the structure of.

[0002]

2. Description of the Related Art An example of the above seed plant is disclosed in Japanese Patent Laid-Open No. 2-104206. In this seeding plant, first, while continuously feeding the seedling raising box (1 in FIG. 4 of the publication) by a conveyer conveyor (5 in FIG. 4 of the publication), first, a soil supply device for floor soil (see FIG. 4 of the publication). From 6), bed soil is supplied into the nursery box. Next, seeds are sown on the floor soil of the nursery box by a sowing device (8 in FIG. 4 of the publication), and the soil is covered by a soil supply device for covering soil (9 of FIG. 4 of the publication). It is a structure that is overlaid. Then, the soil in the soil storing portion is taken out by the feeding device (19 in FIG. 4 of the above-mentioned publication) and discharged into the respective tanks of the soil supplying device for the floor soil and the covering soil from the opening of the upper surface thereof. It is configured. In this case, since the floor soil or cover soil needs appropriate air permeability and water retention to retain moisture appropriately, fruit-like soil is used, and more than one type of soil with different particle diameters is used at a certain ratio. It is used as a soil for floor soil or cover soil.

As described above, when the granular soil is supplied from the opening on the upper surface so as to be discharged into the tank, the soil becomes mountain-shaped in the tank, so that particularly large-diameter soil is There is a risk of rolling down the top of the mountain and collecting on the outer frame of the tank.
In this case, the soil is not uniform in the tank, and the floor soil or the cover soil supplied into the seedling raising box has a large amount of large-diameter soil or a large amount of small-diameter soil. Therefore, for example, as shown in FIG. 6 and FIG. 7, the tank 21 is provided with a cylindrical partition plate 22 for stopping the rolling of the soil toward the outer frame portion 21a of the tank 21 even if the soil becomes a mountain shape. It is suggested to be placed inside. Then, in order to prevent the soil from rolling even when the amount of soil in the tank 21 is small, it is preferable to extend the lower side portion 22a of the partition plate 22 downward to near the bottom portion of the tank 21.

[0004]

In the tank 21 shown in FIGS. 6 and 7 as described above, the bottom portion 21b connected to the soil supplying device 23 is generally formed in a funnel shape.
As a result, when the same rectangular tubular partition plate 22 is arranged in the tank 21 having the rectangular outer frame portion 21a in plan view, the bottom portion 21b of the tank 21 and the lower side portion 22a of the partition plate 22 come close to each other. The soil passage 2 between the bottom portion 21b of the tank 21 and the bottom portion 22a of the partition plate 22
4 becomes narrower. Therefore, when the granular soil passes through the narrow passage 24, a bad phenomenon such as a bridge phenomenon of powder and granular material is likely to occur in the narrow passage 24, and the soil may be clogged. It is an object of the present invention to prevent clogging of soil as much as possible between the bottom side of the tank and the bottom side of the partition plate when the partition plate is arranged in the tank for floor soil or cover soil as described above. I am trying.

[0005]

A feature of the present invention is that the tank structure of the seed plant as described above is configured as follows. That is, [1] On the upper surface of the soil in the tank, a cylindrical partition plate that stops rolling of the soil toward the outer frame portion of the tank is disposed in the tank, and the bottom side of the tank and the bottom side of the partition plate are In the soil passage formed between the two, the width of the passage in the horizontal direction is set to be different at each position of the lower side of the partition plate, and the cross-sectional area of the cylindrical partition plate is reduced downward. It is formed in a lump shape.

[2] In the configuration of the above item [1], the shape of the outer frame portion of the tank and the shape of the partition plate in the plan view are set to be rectangular, and the partition plate with respect to the outer frame portion of the tank is viewed in plan view. The phase at is shifted by about 45 °.

[3] In the configuration of [1] above, the shape of the outer frame portion of the tank in plan view is set to be a square shape, and the shape of the partition plate in plan view is set to be a circular shape.

[0008]

[I] In the conventional structure shown in FIGS. 6 and 7, the bottom side 21b of the tank 21 and the bottom side 22a of the partition plate 22 are parallel to each other. Therefore, the soil passage 24 between the bottom portion 21b of the tank 21 and the lower side portion 22a of the partition plate 22 is uniformly narrowed over the length L of one side of the lower side portion 22a of the partition plate 22, and this length is also reduced. There are four narrow passages 24 having a width L. On the other hand, in the configuration of the above [1] or [2] of the present invention, if the outer frame portion 7b and the partition plate 17 of the tank 7 are formed in a quadrangular shape as shown in FIGS. In the passage 19 between the bottom portion 7c of the partition plate 7 and the lower side portion 17a of the partition plate 17, a portion where the bottom portion 7c and the lower side portion 17a are closely located and narrowed is a corner portion of the lower side portion 17a of the partition plate 17 (see FIG. In the structure of No. 2, the area where the support stay 18 is connected) is small. Further, as shown in FIG. 1, if the partition plate 17 is formed in the shape of a lower recess, the partition plate 17 described above is formed.
Also at the corners of the lower side 17a, the outer frame portion 7 of the tank 7
The distance from b becomes relatively wide. As a result, the narrow portion where the bridging phenomenon may occur in the soil passage can be made smaller than that of the conventional structure, and the gap can be set relatively wide even in this narrow portion. As a whole, the risk of the bridge phenomenon occurring can be suppressed.

[II] With the construction as described in [3] above, for example, as shown in FIG. 4, a portion where the bottom portion 7c of the tank 7 and the lower side portion 17a of the partition plate 17 are narrowed close to each other is outside the tank 7. It becomes a small range in the vicinity of the central portion of the frame portion 7b (the portion where the support stay 18 is connected in the structure of FIG. 4). Then, if the partition plate 17 is formed in the shape of a lower recess as in the case of FIG. 1, the spacing becomes relatively wide even in the vicinity of the central portion of the outer frame portion 7b of the tank 7. Therefore, similar to the above, the narrow portion where the bridge phenomenon may occur can be made smaller than the conventional structure,
Further, since the interval can be set relatively wide even in this narrow portion, the risk of the bridge phenomenon occurring in the entire tank can be suppressed.

[0010]

As described above, when the partition plate for preventing the rolling of soil is arranged in the tank, the range of the narrowed portion at the lower end portion of the partition plate is reduced, and the interval between the narrowed portions is also reduced. By setting the width relatively wide, it was possible to suppress the problem of soil clogging due to the bridge phenomenon at the lower end of the partition plate. As a result, it is possible to prevent soil from rolling in the tank while suppressing the problem of soil clogging, and it is possible to smoothly supply uniform soil to the seedling raising box, improving the efficiency of the entire sowing plant. Could be achieved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows the whole planting plant for rice, and an empty nursery box 2 is sent from the left side of the paper to the right side of the paper on the conveyor 1. Then, first, the soil is supplied from the soil supplying device 3 for the floor soil into the empty nursery box 2 and spread, and the floor soil is formed in the nursery box 2, and the excess floor soil is scraped off by the rotary brush 4. Go away. Next, seed paddy is sown from the seeding device 5 on the bed soil in the seedling raising box 2, and soil is supplied from the soil supplying device 6 for covering soil to the seed pad in the seedling raising box 2 to form a cover soil. . In this way, the seedling raising box 2 for which the seeding has been completed is further sent to the right side of the paper, stacked in multiple stages, and sent to the germination chamber (not shown).

The soil supplying device 3 for the above-mentioned floor soil and for covering soil
Each of the tanks 6 and 6 is provided with a tank 7 or 8 for temporarily storing soil.
Takes out the soil one by one. Next, a configuration for replenishing the tanks 7 and 8 with soil will be described.

As shown in FIG. 3, the first is for storing soil.
A soil storage section 9 is provided, and the soil in the first soil storage section 9 is sent to the second soil storage section 11 by the first conveyor device 10 of the belt conveyor type. In addition, soil supply device 3 for floor soil
The soil spilled from the nursery box 2 is collected and transported by the second conveyor device 12 of the belt conveyor type during the soil supply from the soil, the scraping by the brush 4, and the soil supply from the soil supply device 6 for covering soil. , Sent to the second soil storage section 11.

The soil in the second soil storage section 11 is scraped off and lifted by the bucket type feeding device 13. This feeding device 13 has a structure in which a large number of buckets 13b are bolted to an endless cloth belt 13a,
The soil lifted by the feeding device 13 is repeatedly driven in the forward and reverse directions. The belt conveyor type third transfer device 1
4 is distributed to the tanks 7 and 8 from the left and right ends of the third transfer device 14 and the opening 7 is formed on the upper surface of the tanks 7 and 8.
a, 8a (see FIG. 1).

As shown in FIG. 1, a contact type sensor 15 for detecting that the tanks 7 and 8 are filled with soil.
a, 16a, and contact-type sensors 15b, 16b for detecting that the soil in the tanks 7, 8 has decreased to a predetermined amount are provided, and the tanks 7 or 8 are full during the above-described normal work. Then, the feeding device 13, the first
The second and third transfer devices 10, 12, and 14 are configured to automatically stop. Then, when the soil in the tank 7 or 8 is reduced to a predetermined amount, the feeding device 13, the first,
The 2,3 carrier devices 10, 12, 14 are configured to operate automatically.

As shown in FIGS. 1 and 2, the tanks 7 and 8 have outer frame portions 7b and 8b having a quadrangular shape in a plan view, and bottom portions 7c and 8c of the tanks 7 and 8 are square cones. It is formed in a funnel shape that is the reverse of. The partition plate 17 is arranged in the tanks 7 and 8. The partition plate 17 has a quadrangular tubular shape, and is formed in a lower conical shape having a smaller cross-sectional area toward the lower side. The four corner portions of the partition plate 17 are connected to the four support stays 18 extending from the central portions of the outer frame portions 7b and 8b of the tanks 7 and 8 to form the outer frame portions of the tanks 7 and 8. The partition plate 17 is supported with respect to 7b and 8b in a state in which the phase is shifted by 45 ° in a plan view.

Therefore, the bottom portions 7c and 8c of the tanks 7 and 8 are
Then, the lower side portion 17a of the partition plate 17 is in a state of being shifted in phase by 45 ° in a plan view, and is not parallel to each other. As a result, as shown in FIGS. 2 and 1, the bottom portions 7c and 8c of the tanks 7 and 8 and the lower side portion 1 of the partition plate 17 are
In the soil passage 19 between the 7a, the bottom portions 7c and 8c and the lower portion 17a are close to each other near the support stay 18, and the horizontal width of the passage 19 becomes relatively small. On the contrary, partition plate 1
In the vicinity of the central portion of the lower side portion 17a of 7 (near the corner portions of the bottom portions 7c and 8c of the tanks 7 and 8), the bottom portions 7c and 8c are separated from the lower side portion 17a, and the width of the passage 19 in the horizontal direction becomes wider. Of.

[Embodiment] Instead of the quadrangular cylindrical partition plate 17 as described above, the partition plate 17 is formed in a cylindrical shape, and the cross-sectional area becomes smaller toward the bottom as in the structure of FIG. You may form in a ball shape. In this case, as shown in FIG. 4, in the tanks 7 and 8 having the rectangular outer frame portions 7b and 8b, four sets extending from the central portion of the outer frame portions 7b and 8b of the tanks 7 and 8 are arranged. The cylindrical partition plate 17 is connected to and supported by the support stay 18 of FIG. In the case of a rectangular tubular partition plate 17 as shown in FIG. 2, the partition plate 1 is used in the case of wet soil.
Soil may stick to the inside corners of 7, but
Since the cylindrical partition plate 17 as shown in (1) has no corners, there is no risk of soil sticking.

In the above embodiments, the tanks 7 and 8 have the outer frame portions 7b and 8b formed in a quadrangular shape in plan view. However, as shown in FIG. 5, the outer frame portions 7b and 8b of the tanks 7 and 8 are 8b may be formed in a circular shape in a plan view, and a quadrangular cylindrical lower confined partition plate 17 may be arranged in the tanks 7 and 8. Further, a pentagonal or triangular tubular lower conical partition plate may be arranged in a tank having a quadrangular outer frame portion.

Further, in the above embodiment, the respective positions of the lower side portion 17a of the partition plate 17 are set to the same level in a side view (see FIG. 1). By forming the lower side portion 17a of the partition plate 17 in a zigzag shape like a saw in a side view in the structure of FIG. 1, the width of the passage 19 in the horizontal direction is set to each position of the lower side portion 17a of the partition plate 17. It may be set to be different.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a tank for floor soil and soil cover.

FIG. 2 is a plan view of a tank for floor soil and soil cover.

FIG. 3 is a side view of a soil supply device, a tank, a conveyor, and a feeding device and the like in a sowing plant.

FIG. 4 is a plan view of a tank for floor soil and soil cover in the first alternative embodiment.

FIG. 5 is a plan view of a tank for floor soil and soil cover in a second alternative embodiment.

FIG. 6 is a vertical sectional side view showing the structure of a conventional tank.

FIG. 7 is a plan view showing the structure of a conventional tank.

[Explanation of symbols]

1 Conveyor 2 nursery boxes 3,6 Soil supply device 7,8 tanks 7a, 8a Opening port on the top of the tank 7b, 8b Outer frame of tank 7c, 8c Bottom of tank 11 Soil storage section 13 Feeding device 17 partition boards 17a lower part of partition plate 19 dirt passage

Claims (3)

[Claims] 1. Tanks (7), (8) for temporarily storing floor soil or soil for covering soil, and said tanks (7), (8) in a nursery box (2) sent on a conveyor (1). In addition to the soil supply devices (3) and (6) for putting the soil in
The soil in the soil storage section (11) is taken out and the tank (7),
(8) A tank structure of a seeding plant equipped with a feeding device (13) for discharging into the tanks (7) and (8) through the openings (7a) and (8a) on the upper surface, the tank (7) , (8), the cylindrical partition plate (17) for stopping the rolling of the soil to the outer frame parts (7b), (8b) of the tanks (7), (8) is provided on the upper surface of the tank. The tanks (7), (8) are arranged in the tanks (7),
Partitions (17) with bottoms (7c) and (8c) of (8)
Soil path (1) formed between the lower side (17a)
9), the width in the horizontal direction of the passage (19) is set to be different at each position of the lower side portion (17a) of the partition plate (17), and the tubular partition plate (1)
A tank structure of a seeding plant in which 7) is formed in the shape of a lower pool having a smaller cross-sectional area toward the lower side. 2. The shape of the outer frame portions (7b), (8b) of the tanks (7), (8) and the shape of the partition plate (17) in a plan view are set to be rectangular, and the tanks are The tank structure of the seeding plant according to claim 1, wherein the phase of the partition plate (17) in plan view is shifted by about 45 ° with respect to the outer frame portions (7b) and (8b) of (7) and (8). 3. The shape of the outer frame portions (7b), (8b) of the tanks (7), (8) in plan view is set to be a quadrangle shape,
The tank structure for a seed plant according to claim 1, wherein the partition plate (17) has a circular shape in plan view.