JPH0449894Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (industrial application field) The invention is a device that absorbs water into the cultivation bed in hydroponic cultivation of vegetables, etc. More specifically, the present invention relates to a device that allows a cultivation bed to be squeezed using rollers and restored in water, thereby allowing complete water absorption to occur efficiently.

(Prior art) Conventionally, in hydroponic cultivation of Japanese mitsuba, fine onions, spinach, green vegetables, high cellar, etc., in order to make the cultivation bed made of urethane foam absorb water, the cultivation bed 20 is
As shown in the figure, it is placed in a water tank 21 and pressurized from above by a squeezing plate 23 with many holes 22 to squeeze out the air contained therein, and then the water is absorbed by the restoring force of the cultivation bed's elasticity. It was made in a similar manner.

(Problem to be solved by the invention) The conventional water absorption means described above is carried out by manually pressing the squeezing board, so even if the standard size of the cultivation bed of 30 x 60 cm is divided into three parts and pressure is applied separately. ,still,
It is difficult to completely remove air from the whole area by applying uniform force to each part, so air remains in some parts and does not absorb water, so elasticity works during sowing and the sown seeds As a result, the desired number of germination cannot be obtained as a result of this, and the presence of non-water-absorbing areas impairs the growth of seedlings, which reduces the quality and yield of the product. Furthermore, if the cultivation bed is divided into three parts and pressurized, the number of treatments will be tripled, resulting in a significant increase in labor and time, as well as severe worker fatigue.

The present invention was made to solve the above-mentioned problems, and by squeezing the cultivation bed with rollers and returning it to water, complete water absorption can be carried out efficiently, and hydroponic cultivation with good quality and yield can be achieved. The purpose is to provide a device for efficiently cultivating crops with less fatigue.

B. Structure of the invention (means for solving the problem) The means of the invention for achieving the above-mentioned purpose consists of an aquarium filled with water and a squeezing part located underwater on one side of the aquarium. A water absorption device for a hydroponic cultivation bed is provided with a pair of squeezing rollers, a guiding member that guides the cultivation bed to a squeezing portion between the squeezing rollers, and a driving means for rotating the pair of squeezing rollers in opposite directions. .

The cultivation bed used in this device is made of a sponge material to absorb and retain water.
Generally, synthetic resin such as foamed urethane or synthetic rubber is used, and when lifted from water after absorbing water,
A tray is placed in the water tank in advance to scoop up the cultivation bed evenly and prevent absorbed water from flowing out and creating non-water absorbing areas.

The aquarium is filled with water, and in order to squeeze out air from the cultivation bed and absorb water in the water, it is made wide and deep enough to accommodate the cultivation bed and tray. If a means for discharging the water-absorbed cultivation bed is provided, it should be made long accordingly.

The squeezing roller squeezes air out of the cultivation bed under water in the aquarium.For this purpose, the squeezing roller is placed on one side of the aquarium so that the gap between the pair of rollers, that is, the squeezing part, is located in the water. The distance between the rollers is set to 0 in order to completely squeeze out the air, that is, the circumferential surfaces are in contact with each other.The material used for the rollers is rubber or synthetic resin with appropriate hardness and elasticity. The line connecting them is inclined obliquely to the water surface, so that the cultivation bed, which is guided obliquely from above the water surface into the water by a guiding member described later, smoothly enters the squeezing part.

The cultivation bed guiding member is for placing the cultivation bed and guiding it to the clamping part of the squeezing roller, and has one end close to the squeezing part of the roller and the other end positioned above the water surface outside the aquarium. It is installed diagonally, and usually uses a chute on which the cultivation bed can be slid.
If necessary, a belt conveyor that rotates in synchronization with the squeezing roller may be used.

The squeezing roller drive means rotates a pair of squeezing rollers at the same speed in opposite directions. Gears of the same diameter are fixed to the roller shafts, and the gears are meshed to generate human power that is transmitted to one shaft. Alternatively, the power is transmitted to the other shaft and both rollers rotate oppositely at the same speed, so that the cultivation bed is squeezed evenly from above and below.

The means for carrying out the cultivation bed is for automatically taking out the cultivation bed that has absorbed water in the aquarium, and is provided at the upper part of the elongated aquarium, and the front side thereof is raised up when storing and taking out the container of the cultivation bed. It is formed so that it can be knocked down when being carried out, and the rear part has a gentle slope to go out of the water tank to prevent absorbed water from flowing out of the cultivation bed. If so, seeding can be performed following the water absorption operation.

In addition, this transport means was installed above the water tank because the cultivation bed floats, but if the cultivation bed sinks, it should be installed so that it rests on the bottom of the tank, and if it floats, it should be installed above the water tank. However, if they are arranged above and below so as to sandwich the cultivation bed, the cultivation bed can be carried out more reliably.

(Function) The device of the present invention configured as described above fills the water tank with water, rotates the squeezing roller, places the tray that receives the cultivation bed at the bottom of the tank, and then moves the cultivation bed to the guide member. When fed along the line, a pair of squeezing rollers draw in the cultivation bed and squeeze it by rotating at a constant speed in opposite directions, completely squeezing out the air contained in the internal space of the cultivation bed, and then restoring it in water, so that the air is removed. The operation of absorbing water into the empty space is performed evenly over the entire length of the cultivation bed, so the cultivation bed completely absorbs water and fits inside the tray, so at this time, the tray allows the cultivation to take place. If the bed is raised horizontally, a cultivation bed that has completely absorbed water can be obtained.

In addition, this device can be used by making the water tank long and providing means for transporting the cultivation bed.
By automatically taking out the water so as not to cause water to flow out and sowing the seeds at the rear, it is possible to further save labor and increase efficiency in water absorption and sowing.

(Example) Next, an example of a water absorption device for a hydroponic cultivation bed according to the present invention will be described based on the drawings.

1 and 2 of the drawings, reference numeral 1 denotes a water tank supported by a frame 2, which is formed to be wide and deep enough to accommodate a cultivation bed to be described later, and has a water supply port 3 at an appropriate position on its upper part. An overflow port 4 is provided to drain excess water and maintain the water level, and a drain pipe 6 plugged with a stopper 5 is provided at the bottom of the tank.

7, 7 is a pair of upper and lower squeezing rollers provided on one side of the water tank 1, which are made of rubber or synthetic resin with appropriate hardness and elasticity and have a length that matches the width of the water tank 1;
It is formed to a thickness of about 100 mm, and the supporting shafts 8, 8 are arranged so that the line a connecting them is inclined with respect to the water surface as shown in Fig. 1, and the guide member described later is used to connect the supporting shafts 8, 8 from above the water surface to the water. The cultivation bed guided diagonally is made to smoothly enter the squeezed part b between both rollers, and the gap between the squeezed part b varies depending on the material of the cultivation bed, but in the case of urethane foam, , the circumferential surfaces of both rollers 7, 7 are in contact with each other.

9 is a roller cover, and the above-mentioned squeezing roller 7,
7 to prevent the worker's clothes and other objects from getting caught.

Reference numeral 10 denotes a cultivation bed guiding member, one end of which is placed close to the squeezing portion b of the squeezing rollers 7, 7, and the other end is attached to the aquarium 1 with an incline so that it is positioned above the water surface of the aquarium. When the safety cover 11 is attached and the cultivation bed is placed on the guiding member 10 and sent, it is smoothly introduced into the squeezing portion b of the squeezing rollers 7, 7.

12, 12 are interlocking gears of the squeezing rollers 7, 7;
Two pieces of equal diameter are attached to the support shafts 8, 8 so as to mesh with each other, and one of the support shafts 8 is powered by a manual handle 13 as shown in FIG. 3 or a motor 14 as shown in FIG. When the rotation is transmitted, both squeezing rollers 7, 7 are rotated in opposite directions at the same speed, etc., so that the cultivation bed is squeezed evenly from above and below.

Reference numeral 15 denotes a toilet holding member provided on the rear side of the lower squeezing roller 7, and when the tip of a floating tray (described later) is inserted under this member, the tray passes through the squeezing rollers 7, 7 (described later). be kept under the growing bed.

Numeral 16 is the cultivation bed, which is made of a sponge material such as urethane foam and formed into a rectangular shape of 30 x 300 x 600 mm in order to sufficiently absorb and retain the water that serves as the culture medium. A cut c is made that connects only a portion so that it can be divided into division units, for example, 40 mm blocks.

Reference numeral 17 denotes a tray for storing the cultivation bed 16, which receives the water-absorbed cultivation bed 16 in water, takes it out of the aquarium 1, and sows and cultivates while retaining water in the cultivation bed. This is what I did.

Reference numeral 18 denotes a conveyor for carrying out the cultivated bed 16 which has absorbed water, and as shown in FIG. The front part d is aquarium 1.
When inserting the tray 17, raise it from the middle as shown by the chain line in Fig. 5, and after inserting the tray,
As shown by the solid line, the cultivation bed 16 which has been laid down and absorbed water is automatically carried out from the water tank 1 and is set up so as to be sent to the sowing section e.

C. Effects of the invention As mentioned above, the device of the present invention squeezes the cultivation bed with rollers and restores it in water, so the entire cultivation bed completely absorbs water and the sown seeds do not fly away when sowing. As the seeds all adhere to the cultivation bed, the germination of each part is averaged and the growth condition after germination is also uniform, resulting in a marked improvement in product quality and yield.
In addition, since roller squeezing allows continuous processing without dividing the cultivation bed as in the conventional method, the labor and time required for processing are greatly reduced, and there is almost no fatigue on the part of the operator.

If a means for carrying out the cultivation bed is provided, the cultivation bed that has absorbed water can be automatically taken out, which further improves the effects of labor saving and efficiency improvement.

If the rear part of the transport means is used as a seeding section, the seeds can be sown after the cultivation bed absorbs water, further streamlining the work.

It has the following unique effects.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing one embodiment of the device related to the present invention. Figure 2 is a plan view of the same as above. FIG. 3 is a partial front view showing another example of the driving means in the same as above. FIG. 4 is a perspective view of a cultivation bed for absorbing water and a tray for receiving it. FIG. 5 is a schematic longitudinal sectional side view showing an example in which the means for carrying out the same cultivation bed as described above is combined. FIG. 6 is a sectional view showing a conventional device. 1 is a water tank, 7, 7 are squeezing rollers, 16 is a cultivation bed, and 12, 12 and 13, 15 are driving means for the squeezing rollers.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An aquarium filled with water, a pair of squeezing rollers with a squeezing part located underwater on one side of the aquarium, and cultivation in the squeezing part between the two squeezing rollers. A water absorption device for a hydroponic cultivation bed, characterized by comprising a guide member that guides the bed, and a drive means that rotates a pair of squeezing rollers in opposite directions. (2) A water absorption device for a hydroponic cultivation bed, characterized in that the water tank according to claim (1) is provided with a means for transporting the water-absorbed cultivation bed out of the tank. (3) A water absorption device for a hydroponic cultivation bed, characterized in that a seeding section is provided on the rear side of the carrying-out means according to claim (2).