JPH0474970B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention improves sowing accuracy by making seeds larger and making them easier to sow, and also coats seeds with a coating agent containing nutrients, fungicides, etc. The present invention relates to a seed coating device that is used for the purpose of protecting seeds.

[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 extremely difficult to control the thickness of the coating to an appropriate level, and seeds often do not germinate due to variations in the thickness.

(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 shape of the coating spherical regardless of the shape of the seed without causing scratches or cracks in the coating layer, and by making the thickness of the coating substantially constant. This not only improves the properties, but also makes the coating work easier and more efficient as a continuous work.

[Means for solving problems]

A cylindrical outer plunger is inserted into the gel supply path provided in the nozzle body, and a cylindrical body with a seed supply path formed inside is inserted into the outer plunger to form a double structure nozzle, and the gel A gel flow path connected to the supply path is communicated with the gel storage tank via a valve that opens and closes the gel flow path, and seeds are supplied to the seed supply path in synchronization with a handle that pushes the outer plunger. It is characterized by being equipped with a seed supply device.

[Effect]

With the above configuration, a certain amount of gel is discharged from the end of the gel supply channel surrounding the seed supply channel by means of a pressure increase means such as a plunger, but during discharging, the gel is applied to the lower part of the seed supply channel due to surface tension. When the seeds are becoming spheroidal, the seeds supplied from the seed supply device fall onto the gel via the seed supply path and are wrapped in the gel until a certain amount of gel is discharged.

〔Example〕

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

In Fig. 1, the nozzle body 1 has a gel supply channel 2 consisting of a cylindrical hole opening upward, and a small hole with a diameter of about 8 to 15 mm is opened in the center at the lower end of the gel supply channel 2, and A valve seat 3 having a conical inner wall surface is provided.

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

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

The outer plunger 4 has a collar 4a on the upper part, and a spring 7 is attached between the collar 4a and the seal retainer 6.

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

The gap between the outer plunger 4 and the cylindrical body 8 is so small that the gel in the gel storage chamber 2 does not leak.
An annular recess is provided at the upper end of the inner circumferential surface of the packing 9.
is inserted, and the seal presser 10 is attached thereon.

The cylindrical body 8 is provided with a pressure receiving part 8b so as to receive 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 cylindrical body 8 and a spring receiver 11 disposed above the cylindrical body 8.

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 (not shown) communicating with a gel storage tank (not shown) is connected to the pipe joint 14.

As shown in FIG. 3, the nozzle main body 1 has an arm 1a projecting in the horizontal direction, and a main body fixing fitting 17 is attached to the end of the arm 1a with a screw 18.

A hole is provided at the joint between the arm 1a and the main body fixing fitting 17 to accommodate a support 20 installed on the stand 19, so that the arm 1a of the nozzle main body 1 can be mounted at an arbitrary height on the support 20. can.

Further, a shaft 21 is attached to the pillar 1b protruding from the nozzle body 1.
is fixed to the shaft 21, and a lever 22 having a protrusion 22a that contacts the upper surface of the outer plunger 4 is pivotally connected to the shaft 21. (See Figure 3).

On the opposite side of the column 1b of the nozzle body 1, a stopper stand 1c with a female thread is provided protrudingly, and the female thread of the stopper stand 1c has a threaded rod 23 having a T-shaped head 23a and passing through the lever 22. Screw together.

A cylindrical stopper 24 having a female thread on the inner surface is screwed into the middle part of the threaded rod 23.
By rotating the stopper 24, the height of the stopper 24 can be adjusted as desired.

Therefore, the lever 22 can be tilted up and down between the head 23a of the threaded rod 23 and the stopper 24 using the shaft 21 as a fulcrum.

A seed container support stand 26 is attached to the nozzle body 1 to support a seed container 25 having an inclined inner bottom surface.

The seed container support stand 26 has a side wall 26a, a manual handle 27 is pivotally attached to the side wall 26a, and a ratchet wheel 28 is attached to the side wall 26a.
and a shaft 30 to which a bevel gear 29 is fixed (see FIGS. 2 and 3).

The manual handle 27 has a pawl 31 that is biased by a spring in the direction of the ratchet wheel 28 and engages with the ratchet wheel 28, and the pawl 31 that tilts the manual handle 27 downwardly engages the ratchet wheel 2.
8 and tilts the manual handle 27 upward, the pawl 31 and ratchet wheel 28 disengage, and the ratchet wheel 28 does not rotate, leaving only the pawl 31 on the manual handle 27.
rises with

Since the ratchet wheel 28 is fixed to the shaft 30, as the ratchet wheel 28 rotates, the shaft 30 and the bevel gear 29 fixed to the shaft 30 rotate.

When the manual handle 27 is tilted downward, the lever 22 whose free end is pressed by the manual handle 27 presses the outer plunger 4 downward.

A seed supply hole 32 is provided at one location on the high side of the inclined inner bottom surface of the seed container 25, and a hole 25a into which a rotating shaft 33 is inserted is provided approximately at the center of the bottom wall.

The rotating shaft 33 has a seed storage hole 34a that slides and rotates on the inner bottom surface of the seed container 25 and matches the seed supply hole 32.
At the same time, a bevel gear 35 that meshes with the bevel gear 29 is fixed to the outer bottom side of the seed container 25.

The seed plate 34 rotates intermittently together with the bevel gear 35 that meshes with the bevel gear 29 by the ratchet wheel 28 and the bevel gear 29, which rotate intermittently every time the manual handle 27 moves up and down, and during each rotation, the seed receiving hole 34a closes. is provided so as to coincide with the seed supply hole 32.

The seed accommodation hole 34a has a capacity that can accommodate one or a certain number of seeds, and the seeds 36 that are supplied in the seed container 25 are stored in the seed accommodation hole 34a by the intermittent rotation of the seed plate 34. The seeds 36 are carried to the supply hole 32 side, and each time the seed plate 34 stops rotating, the seeds 36 accommodated in the seed accommodation hole 34a pass through the seed supply hole 32 and the seed guide 37 connected to the seed supply hole 32, and then are placed in a cylindrical shape. It is supplied falling into the central hole of the body 8.

The operation of the seed gel coating apparatus configured as above will be explained below.

When the manual handle 27 is not operated, its own weight pushes the free end of the lever 22 downward, and the lever 2
2 is in contact with the stopper 24.

Therefore, the outer plunger 4 is also slightly lowered into the gel supply path 2 by the protrusion 22a of the lever 22.

When the manual handle 27 is raised from this state, the outer plunger 4 pushes up the lever 22 by the elastic force of the spring 7 and rises.

As the outer plunger 4 rises, the volume of the gel supply path 2 increases, so the reed valve 15 is opened and the gel flows into the gel supply path 2.

Since the cylindrical body 8 receives the pressing force of the spring 12, the valve 8a closes the valve seat 3.

On the other hand, a ratchet wheel 28 pivotally attached to the manual handle 27
The claw 31, whose side is biased by a spring, rises while sliding on the ratchet wheel 28 without rotating the ratchet wheel 28.
The bevel gears 29 and 35, the rotating shaft 33, and the seed plate 34 are in a stopped state.

As the manual handle 27 is raised, the lever 22 is raised until it comes into contact with the head 23a of the threaded rod 23, and the gel inhalation step is completed.

Next, when the manual handle 27 is gradually lowered, the lever 22 is pushed down, and the outer plunger 4 pressed by the lever 22 is lowered into the gel supply path 2.

The pressure in the gel supply path 2 is increased, and the cylindrical body 8, which pressurizes the pressure receiving part 8b, is lifted against the spring 12.

When the cylindrical body 8 rises, the valve 8a opens the valve seat 3,
The gel in the gel storage chamber 2 begins to flow out (see Figure 4A).

On the other hand, as the manual handle 27 descends, the claw 31
rotates the ratchet wheel 28 while being engaged with the ratchet wheel 28.

The ratchet wheel 28 rotates together with the shaft 30 and the bevel gear 29, and the bevel gear 3 meshes with the bevel gear 29.
5 rotates together with the rotating shaft 33 and the seed plate 34.

When the seed accommodation hole 34a of the seed plate 34 coincides with the seed supply hole 32, the seeds 36 in the seed accommodation hole 34a fall onto the gel flowing out from the valve seat 3 through the seed guide 37 and the central hole of the cylindrical body 8. (4th
(See Figure B).

If the volume of this seed storage hole 34a is set to one seed, only one seed 36 can be dropped.

When the manual handle 27 is further lowered, the valve seat 3
Only the gel flows out and covers the seeds 36 (fourth
(See Figure C).

When the lever 22 hits the stopper 24, the pressing down of the manual handle 27 is completed, and the gel supply path 2 is depressurized by the outflow of gel. When the manual handle 27 is raised, the inner plunger 8 is pushed by the pressing force of the spring 12. The lowered valve 8a closes the valve seat 3.

The effluent gel cut by the closing of the valve seat 3 naturally falls while covering the seeds 36 (see FIG. 4D).

The falling gel becomes spherical due to surface tension, falls into the gel curing liquid tank below, and hardens in the curing liquid.

As described above, the gel coating work on the seeds is completed by only moving the manual handle 27 up and down.

Therefore, by repeating the up and down movement of the manual handle 27, the seeds can be coated with gel continuously.

The amount of gel required varies depending on the size of the seeds, but by rotating the stopper and adjusting the vertical position, the amount of gel flowing out can be adjusted by changing the stroke amount of the operating lever.

〔effect〕

The present invention has the following effects.

(1) The gel in the gel supply channel is pressurized and discharged from the gel supply channel, and at the same time, the seeds are automatically supplied by falling onto the gel discharged from the seed supply device through the cylindrical body. Since the seeds are completely enveloped in the gel, and the surface tension causes the gel to become spherical and fall into the curing tank, the seeds can be coated with the gel continuously in one step.

(2) The amount of gel covering the seeds can be adjusted by adjusting the stroke of the manual handle, so the amount of gel can be adjusted according to the size of the seeds.

(3) Unlike seed coating processing equipment, no external force is applied to the seeds, and therefore no scratches or cracks occur.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention;
The figure is a longitudinal cross-sectional view of the gel coating device, FIG. 2 is a front view of the same, FIG. 3 is a side view of the same, and FIG. 4 is a cross-sectional view of essential parts for explaining the process of coating seeds with gel. 1... Nozzle body, 1a... Arm, 1b... Pillar,
2... Gel supply path, 3... Valve seat, 4... Outer plunger, 5, 9, 16... Packing, 6, 10
...Packing holder, 7, 12... Spring, 8... Cylindrical body, 8a... Valve, 8b... Pressure receiving part, 8c...
Tsuba, 11... Spring holder, 13... Gel channel, 14
... Pipe joint, 15 ... Reed valve, 17 ... Body fixing fitting, 19 ... Stand, 20 ... Support column,
21...Shaft, 22...Lever, 23...Threaded rod,
23a... Head, 24... Stopper, 25...
Seed container, 26...Seed container support stand, 27...Manual handle, 28...Rawl wheel, 29, 35...Bevel gear, 30...Shaft, 31...Claw, 32...Seed supply hole, 33... Rotating shaft, 34... Seed plate, 34a... Seed storage hole, 36... Seed, 37
...Seed Guide.

Claims (1)

[Claims] 1. A cylindrical outer plunger is inserted into a gel supply path provided in a nozzle body, and a cylindrical body with a seed supply path formed inside is inserted into the outer plunger to form a double structure. A nozzle is configured, and a gel flow path connected to the gel supply path is connected to a gel storage tank via a valve that opens and closes the gel flow path, and seeds are fed in synchronization with a handle that pushes the outer plunger. A gel coating device for seeds, characterized in that a seed supplying device for supplying seeds to the seed supply path is provided. 2. A valve seat is provided at the end of the gel supply channel provided in the nozzle body, and a cylindrical outer plunger is inserted into the gel supply channel, and a spring is provided to bias the outer plunger in a direction away from the valve seat. The cylindrical body, which is formed into a cylindrical shape and has a seed supply passage formed inside thereof, and which is inserted into the outer plunger, is provided with a valve that can be brought into contact with and separated from the valve seat, and the pressure in the gel supply passage is controlled by the pressure in the gel supply passage. A double structure nozzle is constructed by providing a pressure-receiving surface in the opposite direction of the valve and providing a spring that biases the cylindrical valve in a direction that presses the valve against the valve seat. The gel coating device for seeds according to scope 1. 3. A stopper that regulates the amount of operation of the handle is provided on the nozzle body side so that the position of the stopper can be adjusted so that the amount of gel discharged can be adjusted in accordance with the stroke amount of the outer plunger pushed by the handle. The gel coating device for seeds according to claim 1, characterized in that: 4 The seed coating device is provided above the nozzle body and is rotatable between a seed container having a seed supply hole at one location on the higher side of the inclined inner bottom surface and a hole provided in the bottom wall of the seed container. a rotating shaft inserted into the container and having a bevel gear fixed to the outside of the bottom wall; and a seed storage hole fixed to the rotating shaft and aligned with the seed supply hole when rotated along the inner bottom surface of the seed container. It is composed of a seed plate, a rotatable shaft having a ratchet wheel that engages and disengages with a pawl provided on the handle, and a bevel gear that meshes with the bevel gear, and the seed storage hole and the seed supply hole are aligned. 2. The gel coating device for seeds according to claim 1, wherein the seeds in the seed storage hole are sometimes supplied to the cylindrical body via the seed supply hole.