JPH04287620A - Seeding plant tank structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is used in a seeding plant where soil and seeds are continuously put into a nursery box for growing seedlings for planting crops, and a tank for temporarily storing bed soil or soil for covering soil. Regarding the structure of

0002

2. Description of the Related Art An example of the above-mentioned seeding plant is disclosed in Japanese Unexamined Patent Publication No. 2-104206. In this seeding plant, a conveyor (5 in Figure 4 of the above publication) is used.
), while continuously feeding the seedling box (1 in Figure 4 of the above publication), the soil feeding device for bed soil (6 in Figure 4 of the above publication) is first fed.
) is supplied with bed soil into the seedling box. Next, seeds are sown on the bed soil of the seedling box using a seeding device (8 in Figure 4 of the above publication), and a soil supply device for covering soil (9 in Figure 4 of the above publication).
The structure is such that soil is placed over the seeds in the seedling box. Then, the soil in the soil storage section is taken out by the feeding device (19 in Figure 4 of the above-mentioned publication) and discharged into the tanks of the soil supply device for bed soil and covering soil from the open opening on the top surface. It is configured. In this case, granular soil is used because the bed soil or covering soil needs to have appropriate air permeability and water retention ability, and in addition, multiple types of soil with different particle sizes are used in a certain proportion. A homogeneous mixture is used as bed soil or soil covering soil. As mentioned above, when granular soil is discharged into the tank from the open opening on the top surface, the soil forms a mountain inside the tank, and especially large-diameter soil grows on the top of this mountain. There is a risk of it rolling down and collecting on the outer frame of the tank. In this case, the soil in the tank will not be in a uniform state, and the bed soil or covering soil supplied to the seedling nursery box will have areas where there is a lot of large-diameter soil and areas where there is a lot of small-diameter soil. Therefore, as shown in FIGS. 6 and 7, for example, a cylindrical partition plate 22 is installed in the tank 21 to prevent the soil from rolling toward the outer frame 21a of the tank 21 even if the soil forms a mountain inside the tank 21. It is proposed to be placed within. In order to stop the soil from rolling even if the amount of soil in the tank 21 is small, it is preferable to extend the lower side 22a of the partition plate 22 downward to near the bottom of the tank 21.

0003

In the tank 21 shown in FIGS. 6 and 7 as described above, the bottom portion 21b connected to the soil supply device 23 is generally formed in a funnel shape. As a result, when the same square-shaped cylindrical partition plate 22 is placed in the tank 21 having the outer frame part 21a which is square in plan view, the bottom part 21b of the tank 21 and the lower part 22a of the partition plate 22 are brought close to each other. The earth passage 2 between the bottom side 21b of the tank 21 and the bottom side 22a of the partition plate 22
4 becomes narrower. Therefore, when granular soil passes through this narrow passage 24, a problem called a bridging phenomenon of powder and granules tends to occur in this narrow passage 24, which may lead to soil clogging. The purpose of the present invention is to prevent soil clogging between the bottom of the tank and the bottom of the partition plate as much as possible when a partition plate is placed in a tank for floor soil or covering soil as described above. It is said that

0004

[Means for Solving the Problems] The feature of the present invention is that the tank structure for a seeding plant as described above is configured as follows. In other words, [1] At the top of the soil inside the tank, a cylindrical partition plate is placed inside the tank to prevent the soil from rolling toward the outer frame of the tank, and at the same time, a cylindrical partition plate is placed inside the tank to prevent the soil from rolling toward the outer frame of the tank. In the earth passageway formed between the partition plate and the partition plate, the width of the passageway in the horizontal direction is set to be different at each position on the lower side of the partition plate. [2] In the configuration of the previous item [1], the shape of the outer frame of the tank and the shape of the partition plate in plan view are set to square shapes, and the phase of the partition plate in plan view with respect to the outer frame of the tank is set. is shifted by approximately 45°. [3] In the configuration of the previous item [1], the shape of the outer frame of the tank in plan view is set to a square shape, and the shape of the partition plate in plan view is set to a circular shape.

[0005]

[Function] [A] In the conventional structure shown in FIGS. 6 and 7, the bottom part 21b of the tank 21 and the lower part 2 of the partition plate 22
2a are parallel to each other. Therefore, the soil passage 24 between the bottom side 21b of the tank 21 and the bottom side 22a of the partition plate 22 has a length L of one side of the bottom side 22a of the partition plate 22.
The narrow passage 2 of length L becomes narrow uniformly over
4 exists in four locations. On the other hand, in the configuration of the preceding item [1] or [2] of the present invention, for example, as shown in FIGS. 1 and 2, the outer frame 7b of the tank 7 and the partition plate 1
If 7 is formed into a square shape, the bottom part 7 of the tank 7
In the passage 19 between C and the lower side 17a of the partition plate 17, the narrow portion where the bottom side 7c and the lower side 17a are close to each other is the corner of the lower side 17a of the partition plate 17 (in the structure of FIG. This is a small area (the part where the support stay 18 is connected). As a result, the narrow area in the earthen passage where bridging may occur can be made smaller than in conventional structures, and the risk of bridging occurring in the tank as a whole can be suppressed. [B] When configured as in the previous item [3], for example, as shown in FIG. This is a small area near the center (the part where the support stay 18 is connected in the structure of FIG. 4). Therefore, as described above, the narrow area where the bridging phenomenon may occur can be made smaller than in the conventional structure, and the risk of the bridging phenomenon occurring in the tank as a whole can be suppressed.

[0006]

[Effects of the Invention] As described above, when a partition plate for preventing soil from rolling is placed in a tank, the range of the narrow part at the bottom end of the partition plate can be reduced, and the bottom end of the partition plate can be reduced. We were able to suppress the negative effects of soil clogging due to the bridging phenomenon in the areas. As a result, it is possible to prevent the soil from rolling inside the tank while suppressing the negative effect of soil clogging, making it possible to smoothly supply uniform soil into the seedling box, improving the efficiency of the entire seeding plant. We were able to achieve this goal.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 3 shows the entire rice seeding plant, in which empty seedling boxes 2 are conveyed on a conveyor 1 from the left to the right in the paper. First, soil is supplied from the soil supply device 3 for bed soil into the empty seedling raising box 2 and spread over it to form a bed soil inside the seedling raising box 2, and excess bed soil is scraped off by the rotary brush 4. I'm going to be done. Next, seed rice is sown from the seeding device 5 onto the bed soil in the seedling raising box 2, and soil is supplied from the soil supplying device 6 for covering onto the seed rice inside the seedling raising box 2 to form a covering soil. . In this way, the seedling raising boxes 2 that have been sown are further sent to the right in the paper, stacked in multiple tiers, and sent to a germination chamber (not shown).

[0008] The above-mentioned soil supply device 3 for bed soil and covering soil;
6 are respectively provided with tanks 7 and 8 for temporarily storing soil, and soil supply devices 3 and 6 are provided from the bottom of the tanks 7 and 8.
takes out the soil one by one. Next, a configuration for replenishing the tanks 7 and 8 with soil will be explained.

As shown in Figure 3, the first
A soil storage section 9 is provided, and the soil in the first soil storage section 9 is sent to a second soil storage section 11 by a first conveying device 10 in the form of a belt conveyor. Also, soil supply device 3 for bed soil
The soil spilled from the seedling raising box 2 is collected and conveyed by the belt conveyor type second conveyance device 12 when soil is supplied from the seedling box 2, when scraping by the brush 4, and when soil is supplied from the soil supply device 6 for covering soil. , and sent to the second soil storage section 11.

The soil in the second soil storage section 11 is scraped off and lifted by a bucket-type feeding device 13. This feeding device 13 has a structure in which a large number of buckets 13b are connected by bolts to an endless cloth belt 13a, and the soil lifted by the feeding device 13 is transported by a belt conveyor type that is repeatedly driven forward and backward at predetermined intervals. Third
The liquid is distributed to the tanks 7 and 8 by the conveyance device 14, and is discharged from the left and right ends of the third conveyance device 14 to the openings 7a and 8a (see FIG. 1) on the upper surfaces of the tanks 7 and 8.

As shown in FIG. 1, there are contact sensors 15a in the tanks 7 and 8 to detect when they are full of soil.
, 16a, and contact sensors 15b, 16b that detect when the soil in the tanks 7, 8 has decreased to a predetermined amount. When this happens, the feeding device 13, the first
And the second conveyance devices 10 and 11 are configured to stop automatically. When the soil in the tank 7 or 8 decreases to a predetermined amount, the feeding device 13, the first and second
The transport devices 10, 11 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 rectangular shape in plan view, and bottom portions 7c and 8c of the tanks 7 and 8 have a square conical shape. It is shaped like an inverted funnel. A partition plate 17 that prevents soil from rolling toward the outer frame portions 7b and 8b is provided.
It is arranged in tanks 7 and 8. This partition plate 17 has a rectangular cylindrical shape, and the outer frame portions 7b of the tanks 7 and 8,
The four sets of corner parts of the partition plate 17 are connected to the four sets of support stays 18 extending from the central part of the tank 8b, so that the partition plate 17 can be viewed from above with respect to the outer frame parts 7b and 8b of the tanks 7 and 8. te45
It is supported in a state that seems to be out of phase. In addition, the support stay 18 is connected to the partition plate 17 as shown in FIG.
It has a flat plate shape with approximately the same vertical length as the partition plate 17, and can be expected to prevent soil from rolling in the same way as the partition plate 17.

[0013] Therefore, the bottom portions 7c, 8c of the tanks 7, 8
The lower side portions 17a of the partition plate 17 appear to be out of phase by 45° in plan view, and are no longer parallel to each other. As a result, as shown in FIG. 2 and FIG.
In the earth passage 19 between the holes 7a, the bottom sides 7c, 8c and the lower side 17a are close to each other in the vicinity of the support stay 18, so that the width of the passage 19 in the horizontal direction becomes narrow. Conversely, near the center of the lower side 17a of the partition plate 17 (the bottom side 7c of the tanks 7, 8,
8c), the bottom sides 7c and 8c are separated from the lower side 17a, and the width of the passage 19 in the horizontal direction becomes wider.

[Another Embodiment] Instead of the quadrangular cylindrical partition plate 17 as described above, the partition plate 17 may be formed in a cylindrical shape. In this case, as shown in FIG. 4, in tanks 7 and 8 provided with square outer frame parts 7b and 8b, a
A cylindrical partition plate 17 is connected and supported by a set of support stays 18. In the case of a rectangular cylindrical partition plate 17 as shown in FIG. 2, there is a risk that soil will stick to the inner corner of the partition plate 17 in the case of moist soil. Since the partition plate 17 has no corners, there is no risk of soil sticking to it.

In the above embodiment, the outer frames 7b, 8b of the tanks 7, 8 are formed into square shapes in plan view, but as shown in FIG. 8b may be formed into a circular shape in plan view, and a rectangular cylindrical partition plate 17 may be arranged inside the tanks 7 and 8. Furthermore, a pentagonal or triangular cylindrical partition plate may be arranged in a tank having a square outer frame.

Furthermore, in the above embodiment, the positions of the lower side portions 17a of the partition plate 17 are set at the same level when viewed from the side (see FIG. 1). In the structure of FIG. 1 or FIGS. 6 and 7, by forming the lower side 17a of the partition plate 17 in a zigzag shape like a saw in a side view, the passage 19
The width in the horizontal direction may be set to be different at each position of the lower side portion 17a of the partition plate 17.

Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

[Figure 1] Vertical side view of a tank for bed soil and covering soil

[Figure 2]
Plan view of tank for bed soil and covering soil

[Figure 3] Side view of the vicinity of the soil supply device, tank, conveyor, feeding device, etc. in the seeding plant

[Fig. 4] Plan view of a tank for floor soil and covering soil in the first alternative embodiment.

[Fig. 5] Plan view of a tank for floor soil and covering soil in a second alternative embodiment.

[Figure 6] Longitudinal side view showing the structure of a conventional tank

[Figure 7]
Plan view showing the structure of a conventional tank

[Explanation of symbols]

1 Conveyor 2 Seedling box 3,6 Soil supply device 7,8 Tank 7a, 8a Open port on top of tank 7b, 8b Tank outer frame 7c, 8c Bottom of tank 11 Soil storage section 13　　　　　　　Feeding device 17 Partition plate 17a Lower part of the partition plate

Claims (3)

[Claims] Claim 1: Tanks (7), (8) for temporarily storing bed soil or soil for covering soil, and the tanks (7), (8) in a seedling box (2) sent on a conveyor (1). ) are provided with soil supply devices (3) and (6) for putting soil into the tank (7), and also for taking out soil from the soil storage section (11) and supplying the soil to the tank (7).
, (8) A tank structure for a seeding plant, comprising a feeding device (13) for discharging into the tank (7), (8) from the upper openings (7a), (8a), ), (8), the soil is in the tank (
7), a cylindrical partition plate (17) that prevents rolling toward the outer frame portions (7b), (8b) of the tank (7),
(8) and said tanks (7), (8).
In the soil passageway (19) formed between the bottom sides (7c), (8c) of the partition plate (17a) and the bottom side (17a) of the partition plate (17), (17) A tank structure of a seeding plant that is set differently at each position of the lower side (17a). [Claim 2] The tanks (7) and (8) in plan view
The shape of the outer frame (7b), (8b) and the partition plate (17)
The shape of the tank (7) is set to a square shape, and the tank (7
2. The tank structure for a seeding plant according to claim 1, wherein the phase of the partition plate (17) in plan view is shifted by about 45 degrees with respect to the outer frame parts (7b), (8b) of the parts (7b), (8). [Claim 3] The tanks (7) and (8) in plan view
The tank structure for a seeding plant according to claim 1, wherein the outer frame portions (7b) and (8b) of the tank have a rectangular shape, and the partition plate (17) has a circular shape in a plan view. .