JP2010252736A - Sowing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sowing device enabling sowing of seeds on a nursery bed having a wide area at the same time. <P>SOLUTION: The sowing device includes a seed sucking portion furnished with a suction plate having a plurality of holes having a diameter smaller than the seed to be sowed and enabling control of inner pressure to negative pressure and positive pressure, and a seed releasing portion separated from the seed sucking portion, furnished with a plurality of releasing pipes having an inner diameter larger than the seed to be sowed, and having an introducing port positioned opposite to the sucking hole and a releasing port at the other end, wherein the distance between the releasing ports is set to be larger than the distance between the introducing ports. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seeder capable of efficiently sowing a nursery bed having a large area.

  In recent years, demand for pesticide-free crops has increased due to increased demand for food safety and health-consciousness. For this reason, vegetable factories using closed plant cultivation facilities that perform hydroponics using artificial light have attracted attention.

  In such hydroponics, first, seeds are seeded one by one on a nursery bed made of urethane, rock wool, etc. divided into small blocks, the seedling bed is moistened, and a little fertilizer is applied. , Germinate every 6 to 14 days. At this time, in order to save labor, seeds are granulated and precision machine seeding is performed (Patent Document 1). However, the seeds that are granulated and coated are expensive and disadvantageous in terms of cost.

  On the other hand, as an apparatus for collectively sowing seeds that are not granulated coated, for example, a device described in Patent Document 2 is known.

JP 2000-135005 A JP-A-11-155310

  However, in the apparatus described in Patent Document 2, seeds cannot be sown at once on a nursery bed having a larger area than the sowing box. To sow seeds at once on a nursery bed having a large area, the seeding box itself is large. However, if the sowing box is enlarged, handling becomes difficult and workability deteriorates.

  This invention is made | formed in view of this problem, Comprising: The main aim subject is to provide the seeder which can sow a seed to the nursery bed of a large area at once.

  That is, the seeder according to the present invention has a smaller diameter than the seeds to be seeded, and has a seed adsorbing part provided with an adsorbing plate in which a plurality of holes whose internal pressure can be adjusted to negative pressure and positive pressure are formed. And having an introduction port positioned so as to face the hole at one end and a discharge port at the other end, the interval between the introduction ports being set larger than the interval between the introduction ports, And a plurality of discharge pipes having a large inner diameter, and a seed discharge part that is separate from the seed adsorbing part. The negative pressure refers to a pressure below atmospheric pressure, and the positive pressure refers to a pressure above atmospheric pressure.

  In order to sow seeds on a nursery bed using such a seeder, first, the seed adsorbing portion is in a state where the adsorbing plate faces upward, and the inside of the hole is made a negative pressure using an arbitrary suction device. Meanwhile, seeds to be sown are sprayed on the adsorption plate, and the seeds are adsorbed in the holes. Subsequently, the seed adsorption part is rotated so that the adsorption plate faces downward, and the seed discharge part is installed under the seed adsorption part so that the introduction port of the discharge pipe faces each adsorption hole, Furthermore, it arrange | positions so that the said outlet of the said discharge pipe may contact or adjoin to a nursery bed. In this state, when the negative pressure inside the hole is released, the seed adsorbed in the adsorption hole is separated from the adsorption hole, falls into the introduction port, passes through the discharge pipe, and passes from the discharge port to the nursery bed. Released.

  Thus, according to the present invention, since the interval between the outlets is set to be larger than the interval between the inlets, it is efficiently provided on the nursery bed having an area larger than the area of the suction plate in which the holes are formed. Sowing can be performed.

  The seed discharge section includes an inlet support member that supports the discharge pipe in the vicinity of the inlet so that the inlet is arranged at an interval that matches the hole, and the outlet is aligned with a seeding position of each child. It is preferable to include a discharge port support member that supports the discharge pipe in the vicinity of the discharge port so as to be arranged at intervals. Here, “equally spaced” means that the distance between the center positions is equal.

  According to the present invention as described above, even if the seed adsorbing portion is small, sowing can be accurately performed at once and on a predetermined position on a nursery bed having a large area. It can be done very efficiently.

It is a perspective view of a seeder concerning one embodiment of the present invention. It is the sectional view on the AA line of the seed adsorption part in FIG. It is a perspective view of a seeder concerning the embodiment. It is a fragmentary sectional view of the nursery bed in the embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The seeder 1 according to the present embodiment is for seeding the seed S on the nursery bed B. As shown in FIGS. 1 to 3, the seed adsorbing unit 2 and the seed adsorbing unit 2 are separated. A seed release part 3.

Each part will be described in detail.
The seed adsorbing unit 2 is for adsorbing the seed S to be seeded, and is composed of an adsorbing plate 21 and a suction box 22 fitted with the adsorbing plate 21.

  The adsorption plate 21 is a flat plate in which a plurality of adsorption holes 211 having a smaller diameter than the seed S to be seeded are formed at a predetermined interval.

  The suction box 22 is open at the upper end so that the suction plate 21 can be fitted therein, and a space is formed inside by fitting the suction plate 21. In addition, a connection port 221 that can be connected to a predetermined suction device V is formed on the side surface of the suction box 22, and the suction plate 21 is fitted by operating the suction device V connected to the connection port 221. Thus, the pressure in the space formed in the suction box 22 can be made negative, and thus the pressure inside the suction hole 211 continuous with the internal space can also be made negative.

  The seed adsorbing unit 2 is configured so that the upper surface of the suction plate 21 fitted to the suction box 22 is positioned below the opening edge so that the seed S spread on the suction plate 21 does not spill out from the opening edge of the suction box 22. It is comprised so that it may do.

  In addition, as shown in FIG. 2, the seed adsorbing portion 2 is formed with a pocket 23 for accommodating surplus seed S at one upper end thereof, and the pocket 23 contains the seed S accommodated therein. The opening is set narrow so as not to spill out.

  The seed discharge part 3 is for discharging the seed S on the nursery bed B, and is composed of a plurality of discharge pipes 31 and an inlet support member 32 and an outlet support member 33 that support them. Yes.

  The discharge pipe 31 has an introduction port 311 at one end and a discharge port 312 at the other end, and the interval between the discharge ports 312 is set larger than the interval between the introduction ports 311. The outlets 312 are arranged at intervals corresponding to the sowing positions on the nursery bed B. The discharge tube 31 has a larger inner diameter than the seed S to be sown so that the seed S can pass through the discharge pipe 31.

  The introduction port support member 32 supports the discharge pipe 31 in the vicinity of the introduction port 311 so that the introduction ports 311 are arranged at intervals corresponding to the suction holes 211. The discharge pipe 31 is supported in the vicinity of the outlet so as to be arranged at intervals according to the sowing position on the floor B. Each of the inlet port support member 32 and the outlet port support member 33 in the present embodiment has a flat plate shape in which a plurality of holes for inserting and supporting a plurality of discharge tubes 31 are formed.

  A method for sowing seed S on nursery bed B using seeder 1 according to the present embodiment will be described below. In addition, as shown in FIG.3 and FIG.4, the nursery bed B used by this embodiment is a thing in which many nursery beds which consisted of urethane, rock wool, etc. and were divided | segmented into the small block shape were laid, block shape A recess H for accommodating the seed S is formed at the center of the upper surface of each nursery bed divided into two.

  In order to seed the seed S on the nursery bed B using the seeder 1, first, the seed adsorbing unit 2 is placed with the adsorbing plate 21 facing upward, the suction device V is operated, and the pressure inside the suction box 22 is increased. To negative pressure. As a result, the pressure in the suction hole 211 also becomes negative. In this state, when seeds S to be sown are sprayed on the adsorption plate 21, one seed S is adsorbed to each adsorption hole 211 one by one.

  Next, when the seed adsorbing portion 2 is rotated approximately 90 degrees so that the pocket 23 is positioned on the lower side, the seed S that has not been adsorbed by the adsorbing hole 211 slides down on the adsorbing plate 21 and is accommodated in the pocket 23. .

  Subsequently, the seed adsorbing portion 2 is further rotated by about 90 degrees so that the adsorbing plate 21 faces downward with the pocket 23 as the rotation axis, and the underside of the adsorbing portion 311 so that the inlet 311 faces each of the adsorbing holes 211 The seed discharge part 3 is arranged on the surface, and the outlet 312 of the discharge pipe 31 is brought into contact with or close to the nursery bed B. In this state, when the suction device V is stopped and the negative pressure in the adsorption hole 211 is released to a positive pressure, the seed S adsorbed in the adsorption hole 211 is separated from the adsorption hole 211 and discharged from the introduction port 311. It enters the pipe 31, passes through the discharge pipe 31, and falls onto the nursery bed B. Thereby, the seeds S can be sown one by one in each recess H on the nursery bed B.

  In addition, since the seed S accommodated in the pocket 23 can be sprayed on the adsorption plate 21 again from the opening of the pocket 23 by rotating the seed adsorption part 2 so that the pocket 23 is located on the upper side, It can be set as a seeding target.

  Therefore, according to the present embodiment having such a configuration, the interval between the outlet ports 312 is set to be larger than the interval between the inlet ports 311 provided at the same interval as the adsorption holes 211. Can be efficiently seeded at a time on the nursery bed B having an area larger than the area of the adsorption plate 21 on which is formed.

  The present invention is not limited to the above embodiment.

  For example, the shape of the suction plate 21 is not limited to a rectangular shape, and may be appropriately selected depending on the application. Similarly, the shape of the suction box 22 is not limited to a rectangular parallelepiped shape, and may be appropriately selected depending on the application.

  Further, the inlet port support member 32 and the outlet port support member 33 are not limited to flat ones, and are not particularly limited as long as the discharge pipe 31 can be supported.

  When the seed S adsorbed in the adsorption hole 211 is dropped onto the nursery bed B, the seed adsorbing part 2 and / or the seed releasing part 3 may be vibrated lightly so that the seed S can easily fall. .

  In addition, it is needless to say that some or all of the above-described embodiments and modified embodiments may be appropriately combined, and various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1 ... Seeding device 2 ... Seed adsorption part 21 ... Adsorption plate 211 ... Hole (adsorption hole)
3 ... Seed discharge part 31 ... Release pipe 311 ... Inlet 312 ... Outlet

Claims (2)

A seed adsorbing part having an adsorption plate having a smaller diameter than the seeds to be seeded and having a plurality of holes in which the internal pressure can be adjusted to a negative pressure and a positive pressure;
An introduction port positioned so as to face the hole is provided at one end and a discharge port is provided at the other end. A seeder comprising a plurality of discharge pipes having an inner diameter, and a seed discharge part that is separate from the seed adsorbing part.   An introduction port support member that supports the discharge tube in the vicinity of the introduction port so that the introduction port is arranged at an interval that matches the introduction port, and the outlet port is adjusted to a seeding position of each child. The seeding device according to claim 1, further comprising a lead-out port support member that supports the discharge pipe in the vicinity of the lead-out port so as to be arranged at intervals.