JPH0734682B2 - Liquid treatment tank for seed gel coater - Google Patents

Description

TECHNICAL FIELD The present invention relates to a liquid treatment tank for carrying out a hardening treatment in which a surface layer of a gel film coating seeds is dipped in a hardening agent and washing the hardening agent after the hardening treatment. It is a thing.

[Conventional technology]

Conventionally, seeds are generally sown without being coated, but the seeds are coated to protect the seeds from animal feeding damage and to be subjected to pretreatment such as sterilization and germination promotion treatment before sowing the seeds. There is a coating.

Conventional coated seeds are those in which clay or fine sand or a mixture of sugars is sprayed with a binder such as CMC and transferred to the seed surface.
An oxygen generator or the like may be added in some cases.

These are cases where the coating is relatively hard, but there is also a soft coating which coats the seed with a gel or gelatinous substance that swells when it contains water.

[Problems to be Solved by the Invention]

However, in the conventional coating technique, no example was found of coating seeds with an aqueous gel that hardens only the surface layer.

According to the present invention, seeds coated with a gel film (hereinafter referred to as gel-coated seeds) are immersed in a hardening agent to harden the surface of the gel film, and the hardening agent after the hardening treatment is washed with water. A liquid processing tank of a processing apparatus is provided.

[Means for Solving the Problems]

In order to achieve the above object, the liquid treatment tank of the gel coating apparatus for seeds of the present invention comprises a hardening agent tank for hardening the surface of the gel film and a washing water tank for washing the gel film surface after hardening treatment. The hardening agent tank has a seed receiving section for containing the hardening agent, a seed feeding section communicating with the seed receiving section, a screw conveyor provided in the seed feeding section, and a carry-out end of the screw conveyor. A scraping blade fixedly attached to the seed feeding section, a hardening agent return line communicating from the end of the seed feeding section to the seed receiving section, and a hardening agent attached inside the seed receiving section and sending a hardening agent to the seed receiving section. It is composed of an impeller.

Alternatively, the hardening agent tank comprises a seed receiving section for containing the hardening agent,
A seed feeding unit communicating with the seed receiving unit, a screw conveyor provided in the seed feeding unit, a scraping blade fixed to a carry-out end of the screw conveyor, and an end of the seed feeding unit. A hardener return line communicating with the seed receiving section, and a blower for sending air from the seed receiving section to the seed feeding section to the liquid level of the hardening agent in the seed receiving section.

The shape of the scraping blade is formed in a comb tooth shape in which teeth and slits are alternately arranged, and the seed feeding section may be provided with a comb tooth-shaped carry-out chute having a slit through which the teeth can pass. I can.

The water washing tank is provided on the other side of the water tank, a water tank for receiving the gel-coated seeds carried out from the hardening agent tank, a water flow creating pipe for communicating one side inside the water tank with a water supply source, and the other side of the water tank. It is composed of a water draining part in which a net is stretched on an upper surface at a height for receiving water overflowing from the water tank.

Alternatively, the washing tank contains water, a tank having a seed receiving section for receiving the gel-coated seed carried out from the hardening agent tank, and a seed feeding section communicating with the seed receiving section, and the seed feeding section A screw conveyor provided in, a scraping blade fixed to the carry-out end of the screw conveyor, a water washing preparation pipe that connects the water supply source and the seed receiving portion,
And a hardening agent return conduit communicating from the end of the seed feeding section to the seed receiving section.

[Action]

The operation of the liquid treatment tank of the seed gel-coating processing apparatus configured as described above is as follows.

The gel-coated seeds that drop toward the hardening agent tank are spheroidized during falling due to surface tension, then supplied to the hardening agent in the hardening agent tank, and conveyed to the carry-out port of the hardening agent tank by the feeding device. The surface layer of the gel-coated seed is hardened during a predetermined time of being conveyed to the carry-out port.

The gel-coated seeds whose surface has been hardened are sent from the carry-out port of the hardening agent tank to the washing tank, where the hardening agent adhering to the surface is removed while flowing from the water tank of the washing tank to the water draining section, and the surface of the net of the water draining section is removed. Sent to the outside.

〔Example〕

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

1 is a plan view of a hardening agent tank A and a water washing tank B, FIG. 2 is a front view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. 4 is a hardening agent showing a second embodiment. Figure 5 is a vertical cross-sectional view of tank A ₁
FIG. 6 is a plan view of A ₁ , and FIG. 6 is a sectional view taken along line XX of FIG.

A casing C containing a hardening agent tank A and a washing tank B inside
The front cover 3, the side cover 4, and the back cover 5 are attached by screws around the columns 2 standing upright at the four corners of the bottom wall 1 (see Fig. 2) (see Fig. 1), and the upper part of the column 2 An upper cover (not shown) is attached to the above to form a box shape, and a passage base 7 is suspended from a plurality of passage columns 6 attached to the lower surface of a shelf (not shown) provided inside the casing C. , The curing agent tank A is mounted on the flow path base 7 (second
See figure).

The hardening agent tank A communicates with the deep seed receiving portion 8a arranged at a position where the gel-coated seeds are dropped and supplied, and the seed feeding portion 8b having a shallow bottom and a horizontally long shape. And a screw conveyor 11 whose both ends are supported by bearings 9 and 10 is provided inside the seed feeding section 8b, and the end shaft 11a of the screw conveyor 11 carries the seed feeding section 8b out. A scraping blade 13 provided near an outlet 12 formed on the upper edge of the side is fixed, and a stepping motor 15, which is a drive source, is connected to an end shaft 11a via a coupling 14.

The motor bracket 16 is provided on the outer surface of the bottom wall of the seed receiving portion 8a, and the output shaft of the motor 17 attached to the motor bracket 16 is, via the coupling 18, the impeller 19 that penetrates the bottom wall of the seed receiving portion 8a in a watertight manner. The shaft 19a is connected.

This impeller 19 is provided to make a flow for feeding the hardening agent in the seed receiving portion 8a to the seed feeding portion 8b, and the gel-coated seeds floating on the liquid surface of the hardening agent within a short time. It is sent to the screw conveyor 11.

The curing agent sent to the end of the seed feeding unit 8b is the seed feeding unit 8b.
From the return pipe 20 communicating with the end of the pump, it is returned to the return pipe 22 by the pump 21 (see FIG. 2).

A chute 23 that is inclined downward toward the tip is provided outside the carry-out port 12 of the seed feeding unit 8b, and the chute 23 has a bottom wall 23.
a is connected to the drain collection unit 24, and inside the chute 23,
A perforated plate 25 parallel to the bottom wall 23a is provided, and a washing tank B is provided below the front of the perforated plate 25 (see FIG. 3).

The washing tank B is provided with a water flow creating pipe 27 communicating with a water supply source on one side (the right side in FIG. 2) of a water tank 26 containing water therein, and on the opposite side of the water flow creating pipe 27 in the water tank 26. On the upper surface at a height for receiving the water overflowed from the other side of the water tank 26, a drainer portion 28 provided with a net for preventing the gel-coated seeds from falling is provided, and the water supplied from the water flow creating pipe 27 is a water tank. The gel-covered seeds discharged downward from the upper edge of 26 through the drainer 28 and flowing out to the drainer 28 together with water roll on a net having an inclination that decreases toward the slide 29 and slide. It is delivered to 29.

The slide 29 is located below the tip, which becomes lower toward the bottom.
A carry-in hopper 30 is provided, and a drive-side feed screw 31 and a driven-side feed screw 32 are provided below the carry-in hopper 30.

Both ends of the feed screws 31 and 32 are supported by bearings 33 and 34,
The gear 35 fixed to the feed screw 31 and the gear 3 fixed to the feed screw 32 mesh with each other, and the shallow spiral grooves provided on the outer peripheral surfaces of the feed screws 31 and 32 have opposite twist angles to each other. A stepping motor 38 is connected to the end portion of the feed screw 31 via a coupling 37 (see FIGS. 3 and 4).

Therefore, when the stepping motor 38 is started, the gel-coated seeds placed in the shallow spiral grooves of the two feed screws 31, 32 are sent toward the exit hopper 39 provided on the opposite side of the carry-in hopper 30, and the exit hopper It is adapted to be supplied to a belt conveyor 40 provided below 39.

The operation of the liquid treatment tank of the seed gel coating apparatus configured as described above will be described.

After the seed is supplied on the gel film formed in the nozzle part, the hanging gel film is cut, and the gel film covering the seeds and bubbles is spheroidized by the surface tension during falling,
It is supplied to the surface of the hardener in the seed receiving portion 8a of the hardener tank A.

Since the curing agent in the seed receiving portion 8a flows toward the seed feeding portion 8b, the gel-coated seeds floating on the surface of the curing agent reach the inlet of the screw conveyor 11 in a short time, and the outlet end due to the rotation of the screw conveyor 11. And is sent to the chute 23 by the rotation of the scraping blade 13.

The time for which the surface of the gel-coated seed is immersed in the curing agent is almost equal to the feeding time of the screw conveyor 11, and the feeding time of the screw conveyor 11 is constant, so there is no excess or deficiency in the curing time of the gel-coated seed. Therefore, the hardness of the surface hardening bath becomes almost constant.

When it is necessary to change the curing time depending on the type of seeds, it is convenient because it can be freely adjusted by adjusting the rotation speed of the screw conveyor 11.

The gel-coated seed sent to the chute 23 rolls on the chute 23 and is sent to the water tank 26 of the water washing tank B, and the curing agent attached to the surface in the water tank 26 is removed.

The water in the water tank 26 flows to the left side in FIG. 1 and overflows from the left end on the left side to the draining section 28, so that the gel-coated seed flowing along with this water flow has a substantially constant time to move to the draining section 28. The surface cleaning time is almost constant, and no insufficient cleaning occurs.

When the gel-covered seeds overflow with water into the draining section 28, the gel-covered seeds are prevented from falling by the net provided on the upper surface of the draining section 28, and separated from the water falling below the draining section 28.

Since the net has an inclination that decreases toward the slide 29, the gel-coated seeds roll on the net and enter the slide 29, and are transferred from the slide 29 to the feed screws 31 and 32 via the loading hopper 30. When the feed screws 31 and 32 rotate, they are placed in the shallow spiral grooves of the feed screws 31 and 32 and fed to the outlet hopper 39.
The gel-coated seed carried out from 39 is carried out by the belt conveyor 40.

Since the gel-coated seed has water on its surface, the water gives adhesive force to the gel-coated seed placed on the surface of the belt conveyor 40, and the gel-coated seed does not roll or fall off the belt conveyor 40 during transportation. Absent.

Thus, the gel-coated seeds dropped and supplied to the hardening agent tank A are immersed in the hardening agent for a certain period of time to be hardened to a predetermined depth on the surface, and further supplied to the washing tank B to be almost constant in the washing tank B. After being washed with water for a certain period of time, it is carried out and then carried out by the belt conveyor 40 via the feed screws 31 and 32.

FIG. 4 and FIG. 5 are a vertical sectional view and a plan view of a hardening agent tank A ₁ showing a second embodiment of the present invention. The hardening agent tank A ₁ is located at a position where the gel-coated seeds are dropped and supplied. It has a deep-seed receiving part 8a having a deep bottom and a seed feeding part 8b communicating with the seed receiving part 8a. Inside the seed feeding part 8b, both ends are bearings 9 and 10.
The screw conveyor 11 supported by the screw conveyor 11 is provided, the scraping blade 48 is fixed to the end shaft 11a of the screw conveyor 11, and the stepping motor 15 is connected to the end shaft 11a via the coupling 14 as described above. The same as in the first embodiment, the end of the seed receiving portion 8a is provided with a fan chamber 42 that houses a fan 41 driven by a motor, the wind from the fan chamber 42 of the seed receiving portion 8a. The hardener is fed from the liquid surface toward the liquid surface of the seed feeding unit 8b, and a blade 44 for wind direction control is tiltably provided at the tip of the blower 43.

At the end of the seed feeding section 8b, a return pipe 45 communicating with the opening 45a of the seed receiving section 8a is provided, and the opening 46a of the overflow tube 46 is provided on the inner wall surface of the seed receiving section 8a. 8
An opening 47a of the drain pipe 47 is provided on the bottom wall of a.

In the curing agent tank A ₁ configured as described above, the wind blown from the blower 41 passes through the blades 44 for controlling the wind direction and the seed receiving portion.
The surface of the curing agent hits the liquid surface of the curing agent of 8a, and the seed feeding section
Since it flows in the direction of 8b, the gel-coated seed dropped and supplied to the seed receiving section 8a is supplied to the seed feeding section 8b within a short time.

As shown in FIGS. 4 to 6, the raking blade 48 is formed in a comb shape in which teeth and slits are alternately arranged, and the teeth of the raking blade 48 can pass through the seed feeding portion 8b. A carry-out chute 49 having a slit is provided.

In such a case, the gel-coated seed is scraped by the scraping blade 48, and the scraping blade 48 rolls and is transferred to the discharging chute 49 before passing through the discharging chute 49, and rolls on the discharging chute 49. And transferred to Shoot 23.

The scraping blade 13 of the first embodiment may be the scraping blade 48, and the scraping blade 48 of the second embodiment may be the scraping blade 13.

Since the hardening agent tanks A and A ₁ both supply the gel-coated seeds that have been dropped and supplied to the screw conveyor 11 within a short time, there is an advantage that the hardening time can be controlled to a predetermined time.

Therefore, in order to accurately control the washing time of the washing tank B, the structure of the washing tank B can be made the same as the hardening agent tanks A and A ₁ .

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

(1) When the gel-coated seeds are dropped and supplied to the curing agent tank, the gel-coated seeds are immersed in the curing agent for a predetermined time, so that the surface layer of the gel-coated seeds is cured to a predetermined depth, and after the curing, a water washing tank And is washed with water for a predetermined time, there is no risk of excess or deficiency of washing.

Further, the time of immersion in the curing agent can be freely adjusted by controlling the rotation speed of the screw conveyor, and the change of the washing time can also be controlled by adjusting the water flow speed.

If the structure of the washing tank is similar to the hardening agent tank,
The washing time can be controlled more accurately.

(2) Surface hardening of the gel-coated seed supplied by dropping and washing with water after hardening can be continuously and automatically performed.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a plan view of a hardening agent tank A and a water washing tank B, FIG. 2 is a front view of FIG. 1, and FIG. 3 is FIG. FIG. 4 is a vertical sectional view of the hardener tank A ₁ of the second embodiment, FIG. 5 is a plan view of the hardener tank A ₁ , and FIG. 6 is a sectional view taken along line XX of FIG. is there. A: hardening agent tank, B: washing tank, 8: tank, 8a: seed receiving section, 8b: seed feeding section, 11: screw conveyor, 13: scraping blade, 15: stepping motor,
19 …… impeller, 26 …… water tank, 28 …… drainer, 29 ……
Slides, 30 ... Carry-in hoppers, 31, 32 ... Feed screws, 38 ...
… Stepping motor, 40 …… Belt conveyor, 41 ……
Blower, 42 …… Blower room, 44 …… Blade for controlling wind direction,
45 ... Return line.

Claims (5)

[Claims] 1. A seed receiving part for containing a hardening agent, a seed feeding part communicating with the seed receiving part, a screw conveyor provided in the seed feeding part, and fixed to a carry-out end of the screw conveyor. By a scraping blade, a hardening agent return conduit communicating from the end of the seed feeding section to the seed receiving section, and an impeller attached inside the seed receiving section and sending a hardening agent to the seed receiving section. A liquid treatment tank of a seed gel coating processing apparatus, characterized by comprising a hardening agent tank. 2. A seed receiving section for containing a hardening agent, a seed feeding section communicating with the seed receiving section, a screw conveyor provided in the seed feeding section, and fixed to a carry-out end of the screw conveyor. A scraping blade, a hardening agent return conduit communicating from the end of the seed feeding section to the seed receiving section, and a liquid level of the hardening agent in the seed receiving section from the seed receiving section to the seed feeding section. A liquid treatment tank of a seed gel-coating processing device, characterized in that a hardening agent tank is constituted by an air blower that sends air toward it. 3. The shape of the scraping blade is formed into a comb tooth shape in which teeth and slits are alternately arranged, and the seed feeding section is provided with:
The liquid treatment tank of the seed gel coating apparatus according to claim 1, further comprising a comb-shaped discharge chute having a slit through which the teeth can pass. 4. A water tank for receiving the gel-coated seeds carried out from the hardening agent tank, a water flow creating pipe for communicating one side inside the water tank with a water source, and a water tank provided on the other side of the water tank. The gel washing apparatus for seeds according to claim 1 or 2, characterized in that the washing tank is constituted by a draining portion having a net stretched on an upper surface at a height for receiving water overflowing from the water tank. Liquid treatment tank. 5. A water tank containing water and having a seed receiving section for receiving the gel-coated seed carried out from the hardening agent tank, and a seed feeding section communicating with the seed receiving section; and in the seed feeding section. A screw conveyor provided, a scraping blade fixed to the carry-out end of the screw conveyor, a water flow creating pipe that connects a water supply source and the seed receiving portion, and the seed receiving portion from the end portion of the seed feeding portion. The liquid treatment tank of the seed gel coating apparatus according to claim 1 or 2, wherein a water washing tank is constituted by a curing agent return pipe communicating with the part.