JPH0475723B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention improves sowing accuracy by making small, irregularly shaped seeds large and spherical to make them easier to sow.
This invention relates to a seed coating device that is intended to reduce the labor involved in post-sowing management work and to protect seeds from external forces with a coating material containing nutrients, fungicides, etc.

[Conventional technology]

Conventional seed coating processing involves coating the seeds with nutritional substances, fungicides, and other chemicals, or adding chemicals to coating materials such as clay and sugar to coat the seeds with relatively hard coatings. There are some that form a coating layer.

The equipment used for coating is almost the same for both.

That is, first a binder is applied to the seed surface.
It consists of a spraying device that sprays CMC (carboxymethylcellulose) or gelatin as a dilute aqueous solution, and a coating pan that forms a coating layer by rolling the seeds coated with powder or coating material. Common.

In such a device, therefore, the coating operation is divided into two steps, and continuous coating operations cannot be performed.

Devices have also been developed that perform the seed coating operation in one operation.

For example, Utility Model Application No. 59-146504, Utility Model Application No. 146504-
As seen in Publication No. 95811, a device that attempts to achieve dusting or coating using a rotating drum instead of a coating pan has been put into practical use, but although it can process a large amount of seeds, it There is a problem in that it cannot deal with differences in the properties of seeds depending on the type, and the structure is such that an external force exceeding an allowable limit is applied to the seed body.

[Problem that the invention seeks to solve]

The above conventional techniques have the following problems.

(a) The powder coating around the seeds varied greatly in shape and thickness.

(b) It is very difficult to control the thickness of the coating to an appropriate level, and variations in the thickness often result in failure of seeds to germinate.

(c) Equipment that coats large quantities of seeds applies external force to the seeds, causing problems such as scratches and cracks.

(d) Seeds with shapes far from spherical were difficult to coat and mold using a coating pan.

The present invention solves the above-mentioned problems by making the coating into a spherical shape regardless of the shape of the seed without causing scratches or cracks in the coating layer, and wrapping the seed approximately in the center of the coating. By keeping the thickness of the coating substantially constant, the quality of the coating is not only improved, but also the coating operation is made easier and more efficient as a continuous operation.

[Means for solving problems]

The present invention provides a cylindrical body in which a cylindrical plunger is inserted into a gel supply path that penetrates a nozzle body and forms a valve seat at the lower end, and has a pressure receiving part on the inner peripheral surface of the plunger and a valve at the lower end. a gel supply section in which a gel flow path communicating with the gel supply path is connected to a gel storage tank via a reed valve; On the higher side of the seed container having a bottom surface,
providing a seed supply hole located above the cylindrical body;
a seed supply unit, in which a worm wheel and a seed plate are fixed to a rotating shaft pivotally mounted on the bottom wall of the seed container, and the seed plate is provided with a seed receiving hole that coincides with the seed supply hole through rotation; and an end portion. A worm that engages with the worm wheel and two types of cams are fixed to a shaft having a handle, and a lever that is pushed by either of the cams and pushes the plunger downward when pushed. and a drive unit that synchronizes the operations of forming a gel film by opening a valve, supplying seeds onto the gel film, and forming a gel film on seeds by opening the valve, by rotating the handle.

[Effect]

With the above configuration, when the valve of the gel supply section is opened, a certain amount of gel flowing out from the valve forms a thin film below the seed supply path.

Next, the seeds supplied from the seed supply section fall onto the thin gel film formed through the seed supply path.

Afterwards, the gel flows out from the valve again and new gel is coated on the seeds.

Thus, when the valve is completely closed, the gel encasing the seeds is cut off by the closing of the valve, and falls into the gel curing liquid below while becoming spherical due to the surface tension of the gel itself.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

Figures 2 to 4 show the entire device, with a gel supply section A approximately in the center and a seed supply section B disposed above it. A gel coating device is constituted by the driving section C, and this device is supported by the support device D.

As shown in FIG. 2, the gel supply section A has a nozzle body 1, and the nozzle body 1 is provided with a gel supply path 2 formed by a hole passing through it in the vertical direction.

At the lower end of the gel supply channel 2, a valve seat 3 is provided, which has a small hole with a diameter of about 8 to 15 mm in the center and a conical inner wall surface around it.

A substantially hollow cylindrical plunger 4 is fitted above the gel supply path 2 so as to be slidable in the vertical direction.

The gap between the plunger 4 and the nozzle body 1 is made small enough to prevent the gel sealed in the gel supply path 2 from leaking, but an annular recess is provided at the upper end of the gel supply path 2 to prevent the gel from leaking out. Set up Patsukin 5
is inserted, and the packing presser 6 is attached thereon.

The plunger 4 has a tsuba 4a at the top, and the tsuba 4a
A spring 7 is attached between the seal holder 6 and the seal holder 6.

A cylindrical body 8 having a valve 8a at its lower end is fitted into the inner peripheral surface of the plunger 4 so as to be slidable in the vertical direction.

The gap between the plunger 4 and the cylindrical body 8 is so small that the gel in the gel storage chamber 2 does not leak, and an annular recess is provided at the upper end of the inner peripheral surface of the plunger 4 to prevent the gel from leaking out. 9 is inserted, and the packing presser 10 is attached thereon.

The cylindrical body 8 is provided with a pressure receiving part 8b that receives the pressure of the gel in the gel supply path 2.

Further, a collar 8c is provided protrudingly from the upper part of the cylindrical body 8.
A spring 12 is installed between the valve 8a and a spring receiver 11 disposed above the cylindrical body 8, and the cylindrical body 8 is biased in the direction in which the valve 8a abuts against the valve seat 3.

The nozzle body 1 is provided with a gel flow path 13 communicating with the gel supply path 2, and a pipe joint 14 is attached to the end face of the gel flow path 13.

A reed valve 15 is provided on the end face of the pipe joint 14 on the side of the gel flow path 13 to allow gel to flow only in the two directions of the gel supply path.

Reference numeral 16 is a gasket for sealing the joint surface between the pipe joint 14 and the nozzle body 1.

A hose 18 communicating with a gel storage tank 17 disposed above the nozzle body 1 is connected to the pipe joint 14 (see FIGS. 4 and 7).

As shown in FIG. 4, the nozzle body 1 has an arm 1a projecting in the horizontal direction, and a body fixing fitting 19 is attached to the end of the arm 1a with screws 20.

A semicircular recess is provided on the joint surfaces of the arm 1a and the main body fixing fitting 19, respectively, and a circular hole is formed in the joint when the two are assembled.

On the other hand, the support device D is composed of a stand 21 and a column 22 installed on the stand 21. The column 22 is inserted into a hole formed at the joint of the main body fixing fitting 19 and the arm 1a, and the nozzle body 1 is inserted into the support device D. can be installed at any height.

A column 23 is installed on the side surface of the nozzle body 1, and the column 2
A horizontal shaft 24 is fixed to the top of 3.

A lever 25 having a protrusion 25a that contacts the upper surface of the plunger 4 is pivotally attached to the shaft 24 (see FIG. 4).

A stopper base 26 having a female thread is installed on the opposite surface of the column 23 of the nozzle body 1, and a male screw 27 having a T-shaped head 27a is screwed into the female thread of the stopper base 26.

As shown in FIG. 6, the lever 25 has a long hole 25b into which the cylindrical body 8 is inserted, a long hole 25c into which the male screw 27 is inserted, and a hole 25d at the end thereof. (See Figure 6).

A cylindrical stopper 28 having a female thread on the inner surface is screwed into the middle part of the male thread 27.
By rotating the stopper 28, the height of the stopper 28 can be adjusted as desired, and the downward tilting limit of the lever 25 can be adjusted.

The upper tilting limit of the lever 25 is the head 2 of the male screw 27.
It is adjusted by the height of 7a.

The seed supply unit B includes a seed container 3 supported by a seed container support 29 attached to the nozzle body 1.
has 0.

The seed container 30 has an inclined inner bottom surface, a seed supply hole 31 is bored at one location on the higher side of the inner bottom surface, and a hole 30a into which a rotating shaft 32 is inserted is provided approximately at the center of the bottom wall.

The rotating shaft 32 has a seed storage hole 33a that slides and rotates on the inner bottom surface of the seed container 30 and matches the seed supply hole 31.
A worm wheel 34 is attached to the outer bottom surface of the seed container 30.

In addition, a seed supply hole 31 is provided on the outer bottom surface of the seed container 30.
A guide tube 35 having a hole communicating with the guide tube 35 is fixed.

As shown in FIG. 6, side walls 36A and 36B are fixed to both sides of the seed container support base 29 by fastening means such as bolts, and bearings are installed in holes drilled horizontally through the side walls 36A and 36B. 37A and 37B are fitted.

A shaft 38 is rotatably supported by the bearings 37A and 37B, and the shaft 38 has side walls 36A and 37B.
A worm 39 is fixed between 6B.

The worm 39 meshes with the worm wheel 34 and transmits the rotation of the shaft 38 to the rotating shaft 32.

A small-diameter cam 40 and a large-diameter cam 41 are fixed to the outside of the side wall 36A, and a handle 4 is further attached to the end of the shaft 38.
Fix 2.

The handle 42 has a handle portion 42a projecting outwardly attached thereto, and when the handle portion 42a is grasped and turned, the worm 39, the small diameter cam 40, and the large diameter cam 41 rotate together with the shaft 38.

As shown in FIG. 8, the small-diameter cam 40 and the large-diameter cam 41 have their apexes at which the cam lift is maximum facing in substantially opposite directions, and below the small-diameter cam 40 there is a power transmission section that connects and separates from the small-diameter cam 40. A lever 43 is arranged below the large-diameter cam 41, and a power transmission lever 44 that moves toward and away from the large-diameter cam 41 is arranged.

The power transmission levers 43 and 44 have elongated holes 43a and 44a, respectively, on the right side in FIG. 43 and 44 as rotational fulcrums.

A bolt 45 is installed between the power transmission levers 43 and 44.
A spacing piece 46 having a hole passing through is provided, and the spacing piece 46 serves as a thrust bearing for the power transmission levers 43 and 44.

A folded portion 43b is provided at the left end of the power transmission lever 43 by bending at a substantially right angle.
3b has a female thread, and a small screw 4 is attached to the female thread part.
7 are screwed together, and the machine screw 47 is locked with a locking nut 47a.

Further, the power transmission lever 44 has a folded portion 43.
The folded portion 44b is bent at a position opposite to b.
is provided, and a long hole 44c is provided at the left end.

On the other hand, a male screw 48 with a flat head is loosely fitted into the hole 25d of the lever 25, as shown in FIG. flat head and power transmission shaft 49
The power transmission shaft 49 has a male threaded portion at the bottom, and the male threaded portion is screwed into a female thread provided on the outer circumferential surface of the cylindrical fixing metal fitting 50. .

The cylindrical fixture 50 is covered by a position adjustment fixture 51, and the position adjustment fixture 51 is held between the power transmission shaft 49 and the cylindrical fixture 50.

The position adjustment fitting 51 has flat parts 51a at both ends facing each other at a constant interval, and the power transmission lever 44 is loosely fitted between both the flat parts 51a.
A hole passing through the hole and a long hole 44 of the power transmission lever 44
A screw 52 is inserted into c, and a nut is attached to the threaded end of the screw 52 (see FIGS. 5 and 6).

The operation of this apparatus configured as above will be explained with reference to FIGS. 1 and 9.

As shown in FIG. 9A, the top 4 of the small diameter cam 40
0a is directly in front of the page, the top of the large-diameter cam 41 is on the opposite side, and the power transmission levers 43 and 44 are in a state where they are not in contact with the small-diameter cam 40 and the large-diameter cam 41, respectively (hereinafter, this state will be referred to as neutral). ).

When the handle portion 42a is grasped from the neutral state and the handle 42 is rotated in the direction of the arrow 53, the shaft 38, the small diameter cam 40, and the large diameter cam 41 rotate together with the handle 42, and as shown in FIG. Press the cam 40.

The power transmission lever 43 tilts downward about the bolt 45, and pushes down the folded portion 44b of the power transmission lever 44 via a small screw 47 screwed into the folded portion 43b.

The power transmission lever 44 tilts downward about the bolt 45 and pulls the power transmission shaft 49 downward via the screw 52 and the position adjustment fitting 51.
9 and the head of the male screw 48, the lever 25 is tilted downward about the shaft 24 as a fulcrum.

As the protrusion 25a of the lever 25 descends, the flange 4a of the plunger 4 is pushed downward via the seal presser 10, the plunger 4 descends against the spring 7, and the lower part of the plunger 4 is pushed down into the gel supply path 2.
The gel inside is pressurized, the pressurized gel pressurizes the pressure receiving part 8b of the cylindrical body 8, and the cylindrical body 8 rises.

Therefore, as shown in FIG. 1A, the valve 8a that was in contact with the valve seat 3 is separated from the valve seat 3 and becomes open.
Gel 54 flows out. (See FIG. 1B) The cam lift of the small-diameter cam 40 is small, and the amount of gel flowing out is only about half of the total amount of gel covering the seeds.

The gel 54 that has flowed out is then removed from the conical valve seat 3.
Take a lump in the center to dispense along with the gel 54
Forms a thin film with its adhesive strength and does not fall off.

On the other hand, the worm 39 that rotates together with the shaft 38 rotates the rotating shaft 32 and the seed plate 33 together with the worm wheel 34 that meshes with the shaft 38, and rotates the rotary shaft 32 and the seed plate 33 so that the seeds stored in the seed container 30 are removed from the seed storage hole 39.
Only the seeds accommodated in 3a are fed to the seed supply hole 31.

When the seed accommodation hole 33a and the seed supply hole 31 match, a certain amount (one or more) of seeds 55 accommodated in the seed accommodation hole 33a are transferred to the guide tube 35.
The liquid passes through the interior of the cylindrical body 4 and falls onto a thin film-like gel 54 formed below the cylindrical body 4 .

Although the gel 54 may adhere to the outer surface of the valve seat 3, the annular groove 56 provided around the outer surface of the valve seat 3 prevents the gel from spreading to the surrounding area. It does not expand to the bottom.

The amount of gel 54 flowing out in FIG. 1B can be increased by displacing the power transmission levers 43 and 44 in the direction of arrow 57, as shown in FIG.

To reduce the outflow amount of the gel 54, use the arrow 57.
It is only necessary to displace it in the opposite direction.

In this way, the amount of coating gel can be adjusted as desired.

When the handle 42 is further rotated, as shown in FIG. 9C, the top of the small diameter cam 40 rotates to the back side of the drawing, and the top 41a of the large diameter cam 41 comes to the front of the drawing, returning to the neutral state.

Therefore, the power transmission levers 43 and 44 tilt upward and return, and accordingly, the lever 25 also rises, and the plunger 4 rises due to the pressing force of the spring 7, so that the gel supply path 2 becomes negative pressure. As shown in FIG. 1C, the reed valve 15 is opened and the gel 54 is replenished into the gel supply path 2.

When the handle 42 is further rotated, the top portion 41a of the large diameter cam 41 presses the power transmission lever 44 as shown in FIG.
is lowered, the valve 8a opens, and the gel 54 flows out onto the seeds 55, as shown in FIG. 1D.

Therefore, the seeds 55 are wrapped by the gel 54 from above and below, and the seeds 55 are wrapped approximately in the center of the gel 54.

Further, since some air around the seeds is also wrapped in the gel along with the seeds 55, an air layer can be provided around the seeds.

When the handle 42 is further rotated, the small diameter cam 40
Since the large-diameter cam 41 returns to the neutral state shown in FIG. 9A, the valve 8a is also closed as shown in FIG. Fall into the liquid.

During this falling, the surface tension of the gel itself causes it to become spherical.

Thus, one rotation of handle 42 completes one cycle of gel coating of the seeds.

If this operation is continued, seeds can be coated with gel continuously and efficiently.

Seeds vary in shape and size depending on the type of plant, but the seed storage hole 33 of the seed plate 33
By changing the pore size of a and the thickness of the seed plate 33 according to the seeds of the plant, it is possible to handle any kind of seeds.

In addition, as seeds grow larger, a large amount of gel is required, but by changing the positions of the rotational fulcrums of the power transmission levers 43 and 44, the amount of gel discharged can be adjusted. This will not result in a decrease in the rate.

By extruding half of the gel, dropping the seeds, and then letting the gel flow out on top of the seeds, the seeds can be wrapped approximately in the center of the gel, but the amount of extrusion of half the gel can also be adjusted by adjusting the machine screw 47. be able to.

〔effect〕

The present invention has the following effects.

(1) The gel in the gel supply channel is pressurized, half of the gel flows out from the gel supply channel, seeds are supplied from the seed supply section onto the gel that has flowed out, and by further supplying gel on top of that, the seeds are is automatically wrapped in the center of the gel, and the gel becomes spherical due to surface tension and falls into the curing liquid in the curing tank.
Seeds can be coated with gel continuously with just one rotation of the drive handle.

(2) By adjusting the power transmission lever of the drive unit, the initial half amount of gel and the remaining amount of gel can be adjusted as desired, so the optimal amount can be adjusted according to the size of each type of seed. Can be coated with gel.

(3) Unlike a seed coating treatment device, no external force is applied to the seeds, so the seeds will not be damaged or cracked.

(4) The gel, which is supplied in two doses, can create an air layer around the seeds.

[Brief explanation of the drawing]

1 to 9 show embodiments of the present invention.
The figure is a cross-sectional view of the main parts explaining the gel coating process of seeds.
Figure 2 is a longitudinal sectional view of the gel coating device, Figure 3 is a front view of the same as above, Figure 4 is a side view of the same as above, Figures 5 and 6 are perspective views of essential parts of the same as above, and Figure 7 is a gel coating device. FIG. 8 is a perspective view of the coating device, FIG. 8 is a perspective view of the main part of the drive section, and FIG. 9 is a schematic diagram for explaining the operation of the drive section. A... Gel supply section, B... Seed supply section, C...
Drive unit, D... Support device, 1... Nozzle body, 2
... Gel supply path, 3 ... Valve seat, 4 ... Plunger, 5, 9, 16 ... Packing, 6, 10 ... Packing holder, 7, 12 ... Spring, 8 ... Cylindrical body,
8a... Valve, 11... Spring receiver, 15... Reed valve, 17... Gel storage tank, 23... Pillar, 24
...shaft, 25 ... lever, 26 ... stopper stand, 27 ... male thread, 28 ... stopper, 29
...Seed container support stand, 30...Seed container, 31...
... Seed supply hole, 32 ... Rotating shaft, 33 ... Seed plate, 34 ... Worm wheel, 35 ... Guide cylinder, 36A, 36B ... Side wall, 37A, 37B
... Bearing, 39 ... Worm, 40 ... Small diameter cam, 41 ... Large diameter cam, 42 ... Handle, 4
3, 44... Power transmission lever, 49... Power transmission shaft, 50... Cylindrical fixture, 54... Gel, 55...
...seed, 56...concave groove.

Claims (1)

[Claims] 1. A cylindrical plunger is inserted into a gel supply path that passes through the nozzle body and forms a valve seat at the lower end, and the plunger has a pressure receiving part on its inner peripheral surface and a valve at its lower end. a gel supply section into which a cylindrical body is inserted, a spring urges the cylindrical body in a direction to close the valve, and a gel flow path communicating with the gel supply path is connected to a gel storage tank via a reed valve; On the higher side of the seed container, which has an inclined inner bottom surface,
providing a seed supply hole located above the cylindrical body;
a seed supply unit, in which a worm wheel and a seed plate are fixed to a rotating shaft pivotally mounted on the bottom wall of the seed container, and the seed plate is provided with a seed receiving hole that coincides with the seed supply hole through rotation; and an end portion. A worm that engages with the worm wheel and two types of cams are fixed to a shaft having a handle, and a lever that is pushed by either of the cams and pushes the plunger downward when pushed. and a drive unit that synchronizes the operations of forming a gel film by opening a valve, supplying seeds onto the gel film, and forming a gel film on seeds by opening the valve, by rotating the handle. Gel coating device for seeds. 2. The seed gel coating device according to claim 1, wherein an annular groove is provided on the outer wall surface of the nozzle body around the opening at the lower end of the gel supply channel.