JPH02109917A - Soil feeder for seedling box - Google Patents

Abstract

PURPOSE:To provide the title feeder so designed that soil received at the relevant position is carried to a specified distribution position using a feeder, and distributively fed to a bed soil packing device and a soil-covering device through inversion of the distributor to simplify the whole structure. CONSTITUTION:A bed soil packing device 4, an irrigating device 5, a seeding device 6 and a soil-covering device 7 are successively arranged in this order on a carrying apparatus 2 along the carrying direction, and seedling boxes 8 are then successively carried to make a bed soil feed, irrigation, seeding and covering soil feed. A reversely movable belt conveyor 12 as the distributor is spanned between the tank 20 in the soil-covering device 7 and the tank 20 in the bed soil packing device 4. (1) soil carried by a feeder and (2) soil from excess soil from the seedling boxes 8, delivered from a tank 30 equipped at the lower part of the bed soil packing device 4, are fed, with a bucket elevator 27, to the distribution conveyor 12. Therefore, soil for both bed and covering soil can be fed using a common feeder, and excess soil in bed soil feeding is ensured to be fed only in the normal operation of the distribution conveyor 12, thus simplifying the system as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a soil supply device for supplying bed soil and covering soil to seedling boxes for raising seedlings.

[Prior Art] A soil supply device for a seeding plant described in L is provided with a bed soil packing device and a soil covering device that sandwich the seeding device along the transportation path of the seedling boxes, and the soil feeding device is provided with a bed soil filling device and a soil covering device that sandwich the seedling device along the transportation path of the seedling boxes. <i'i The structure is such that the box is filled with bed soil using a bed soil filling device, seeds are sown using a seeding device, water is applied, and then covering soil is supplied using a soil covering device. In addition, in the case of a pot-type seedling raising device, soil is supplied and sown in the seedling raising device which has been turned upside down in advance, and the whole seedling box is turned upside down in the later process, so the bed soil supply and covering soil supply are reversed from the above. It is done in this order.

[Problems to be Solved by the Invention] Conventionally, when using different soil types for bed soil and covering soil, a replenishment device for replenishing soil to a bed soil filling device and a replenishment device for replenishing soil to a soil covering device have been separately provided. However, there was a problem in that the entire soil supply device needed to be installed on a large scale. In addition, when reusing the surplus soil left over from the bed soil supply process or the covering soil supply process, it is inappropriate to use it as a covering soil because it is damp or has foreign matter mixed in, so the surplus soil is There has been a long-awaited need for a soil supply device that can efficiently reduce the amount of soil to a bed soil filling device.

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the soil supply device according to the present invention is capable of supplying soil for a seedling box that is transported along a predetermined route and is equipped with a bed soil filling device that supplies bed soil into a seedling box and a soil covering device that supplies covering soil. The supply device includes a supply device that transports the soil received at a receiving position to a predetermined distribution position, and a supply device that receives soil from the supply device at the distribution position and supplies the soil to the bed filling device when rotating in the forward direction and covering it with soil when the rotation is reversed. A distribution device for supplying the device to the seedling box and a recovery device for recovering surplus soil from supplying bedding soil and covering soil to the seedling boxes are provided, and when the distribution device rotates normally, the surplus soil recovered by the recovery device is collected. The present invention is characterized in that it is configured such that only the fuel is returned to the replenishing device.

[Function] By providing a distribution device that supplies the soil conveyed to the distribution position to the bed soil packing; δ during normal rotation and to the soil covering device during reverse rotation, it is possible to combine the bed soil replenishment device and the covering soil replenishment device. can be shared, making it possible to simplify and reduce the cost of the overall configuration. Moreover, since the surplus soil collected by the collection device is returned to the replenishing device only when the distribution device rotates normally, it is effectively prevented that the surplus soil is mixed into the covering soil.

[Example] Fig. 1 and Fig. 2 show an embodiment of a flat seeding machine, and this seeding machine 1 is installed above a roller conveyor-type conveying device 2 on a floor in a row. i4, a irrigation device 5, a seeding device 6, and a soil covering device 7 are provided in this order along the conveyance direction (arrow X direction). The seedling box 8 used in this seeding machine 1 is
It is shaped like a rectangular dish with a shallow bottom, and the bottom has numerous small holes for drainage. Seedling box 8 is belt conveyor 2
It is continuously supplied one box at a time without any gaps from the starting end side of a.
” 2. Each device supplies bed soil, irrigation, seeding, and covering soil.

The bed filling device 4 and the soil covering device 7 constitute a part of the soil supply device, and the soil supply device is also provided with a replenishing device 11, a distribution device 12, a recovery device 13, and the like. The soil supply device and each of the devices described above are controlled by a control device provided on the operation panel 9.

The bed soil filling device 4 and the soil covering device 7 have the same structure, and include a tank 20 that contains culture medium for bed soil or covering soil, a feeding section 21 that feeds out the soil in the tank downward, and a bottom end portion of the soil that has been fed out. The hopper section 22 supplies the seedling box 8 passing below from an opening provided in the hopper section 22. The tank 20 is provided with a level switch 23 that detects when the amount of soil has fallen below a predetermined level. The surplus of the soil supplied to the seedling box 8 is removed.

The replenishment device 11 is a device that divides soil carried by trucks or the like and lifts it to a predetermined level, and 25 is installed under the floor on the side of the conveyance device 2, and is used to input soil for bedding or covering soil. 26 is an interlock feeder that subdivides the soil supplied from the bottom of the hopper and sends it out to the side, and 27 is a chain packet type elevator that lifts the soil fed from the feeder to a distribution position. It is.

The distribution device 12 is a belt conveyor that can rotate in forward and reverse directions.
A hook is provided across the upper part of both the tanks 20 (A, B) of the floor filling device and the soil covering device. The material supplied onto the belt by the elevator 27 is supplied to the tank 20 (A) of the floor filling device when the belt rotates in the normal direction, and is supplied to the tank 20 (B) of the soil covering device when the belt rotates in the reverse direction.

As shown in FIG. 3, the collection device 13 includes a bed filling device 4
A soil return tank 30 is installed directly below the floor of the elevator, and a chute 31 is provided below the soil return tank 30 to drop and supply the soil in the soil return tank to the elevator packets. A shutter 34 that is opened and closed by an air cylinder 33 controlled by a solenoid valve V is provided at the bottom of the soil return tank 30.

4 and 5 are a sequence diagram and an auxiliary explanatory diagram showing the operation of the soil supply device. If the soil quality of the soil for the bed soil and the soil for the covering soil are different, manual control is performed, and when the soil for the bed soil is put into the hopper 25, the changeover switch 36 is set to the forward rotation side (the state shown in Fig. 4), and the hopper is turned on. When soil for covering soil is put in at 25, the changeover switch 36 is set to the reverse side and cartwheel is carried out. On the normal rotation side, the interlock feeder 26 and elevator 27 operate as appropriate, and the distribution device 1
2 operates in the normal rotation direction to replenish the soil for the bed in the hopper 25 to the tank 20 (A) of the bed soil filling device. At this time, as the air cylinder 33 contracts, the shutter 3
4 can be opened, so soil return tank 30
The surplus soil stored in the supplying bed soil is returned to the replenishing device 11 and used again as bed soil. Also, when it is on the reverse side, the interlock feeder 26 and the elevator 27
similarly operates appropriately, and the distributor fi12 operates in the reverse direction to replenish the soil for covering in the hopper 23 to the tank 20(B) of the covering device.

At this time, since the shutter 34 remains closed, the surplus soil is retained in the refill tank 30 as it is.

Next, if the soil quality of the bed soil and the covering soil are the same, automatic control is performed, and when the level switch 23 of either the bed soil supply device 4 or the covering soil supply device 7 is turned on, the interlock feeder 26, elevator 27 and The distribution device 12 is adapted to operate automatically. When the level switch 23 (A) of the bed soil supply device is turned on, the distribution device 12 operates in the normal rotation direction and the tank 20 of the bed soil supply device is turned on.
Supply soil to (A) and switch level switch 2 of the soil-covering device.
3(B), the distribution device 12 operates in the reverse direction to replenish the tank 20(B) of the soil covering supply device. Similarly to the above, when the distribution device 12 rotates normally, the shutter 34 is opened, and the surplus soil stored in the soil return tank 30 during the supply of bed soil is returned to the replenishment device 11.

In the seeding device 5, a funnel-shaped hopper 40 for storing seeds has an opening 42 elongated in the width direction formed at the bottom thereof, and a seeding roll 43 is provided directly below the opening. Seeding roll 4
3 has a curved bottom surface and is slightly twisted with respect to the axial direction (θ = about 15 degrees), as shown in Figures 5 and 6.
! I! ! Spiral-shaped seed holding recess 45. ... and a circumferential groove 46 whose width is narrower than the seed diameter and deeper than the recess 45.
...is formed. The seeding roll 43 is supported by a horizontally provided roll shaft 47, and is rotationally driven by a motor (not shown). A pair of left and right brushes 50, 50 are attached to the lower end of the hopper 40 so that their tips are in contact with the outer peripheral surface of the seeding roll 43. In addition, a plurality of thin scraper plates 51 are fitted into the respective grooves 46° of the seeding roll. A roll scraper 52 in which... are arranged in parallel in a comb shape is attached to a horizontal shaft 53. The scraper plate 51 extends in an arc shape along the groove 46, and an end 51a on the seed delivery side projects slightly beyond the outer peripheral surface of the seeding roll, and an end 51b on the opposite side is formed into an acute edge shape. .

When the seeding roll 43 is rotated in the direction of the arrow, the seed holding recess 45. The seeds 60 held in ... are carried to the lower side,
It is distributed and supplied to the seedbed soil of the seedling box 8. At this time, the seed holding recess 45. Since the rollers are twisted with respect to the axis of the roll, the seeds flow smoothly and are less likely to become clogged with seeds. The upper surface of the seed holding recess 45 is the brush 5
Each recess 45.0 is leveled by 0 and excess seeds are removed from the recess. The amount of seeds retained within ... is constant.

Further, when the four parts 35 rotate to a predetermined position, the tip of the scraper plate 51 is inserted into the recess, and the held seeds are forcibly ejected, so that each seed holding recess 45. The timing of each seed falling is also constant. Furthermore, the edge-shaped end 5 of the scraper plate 51
1b removes small rice chips and dust remaining inside the grooves 46, thereby preventing clogging of the grooves 46°. Therefore, the seeding roll 43 can be rotated under a good load, and the amount of seeding can always be maintained at an appropriate level.

In this example, the surplus soil from supplying bed soil is returned to the replenishing device and reused as bed soil. However, if the soil is not wet and there are no foreign substances mixed in, the surplus soil from supplying soil It is also easy to configure the soil so that it can be reused as cover soil.

In other words, a soil return tank for bed soil and a soil return tank for covering soil are provided separately, and when the distribution device rotates in the normal direction, the soil in the soil return tank for bed soil is returned to the replenishment device, and when the distribution device rotates in reverse, the soil in the soil return tank for cover soil is returned to the replenishment device. Two of them may be returned to the replenishment device.

[Effects of the Invention] As is clear from the above description, the soil supply device according to the present invention uses a common replenishment device for replenishing the bed soil filling device with bed soil and replenishing the soil covering device with soil covering soil. The entire device is simplified and can be provided at low cost. Additionally, surplus soil from supplying bed soil can be effectively reused as bed soil, making it possible to reduce the number of work steps.

[Brief explanation of the drawing]

Fig. 1 is an overall front view of a seeding machine which is an example of the present invention, Fig. 2
The figure is a side view, and Figure 3 is an explanatory diagram of the main parts of the soil supply device.
FIG. 4 is a sequence diagram showing the operation of the soil supply device, FIG. 5 is an auxiliary explanatory diagram thereof, and FIGS. 6 and 7 are explanatory diagrams of the main parts of the seeding device. DESCRIPTION OF SYMBOLS 1...Seeding machine, 2...Transport device, 4...Bed soil filling device, 5...Seeding device, 7...Soil covering device, 8...Seedling box, ll...Supplying device , 12... distribution device, 13...
...Recovery device, 27...Elevator, 30...Earth return tank, 34...Shutter...

Claims (1)

[Claims] (1) In a seedling box soil supply device that is equipped with a bed soil filling device that supplies bed soil into seedling boxes that are transported along a predetermined route and a soil covering device that supplies covering soil, the seedling box is received at a receiving position. a replenishment device that transports soil to a predetermined distribution position; a distribution device that receives soil from the replenishment device at the distribution position and supplies the soil to a bed soil filling device during forward rotation and to a soil covering device during reverse rotation; A collection device is provided for collecting surplus soil during supply of bed soil and covering soil to the box, and the surplus soil collected by the collection device is returned to the replenishment device only when the distribution device rotates normally. A soil supply device for seedling boxes, characterized in that: