JPH0734829Y2 - Liquid tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a liquid tank used mainly when a chemical liquid such as an agricultural chemical is loaded on a vehicle and transported.

(Prior Art) For example, when a predetermined liquid (pesticides, etc.) prepared in advance in a mixing tank is loaded on a car and transported to a predetermined place, it generally has chemical resistance as a means for containing the liquid. Moreover, it is necessary to use a container that is convenient for transportation.

Therefore, conventionally, as a container used in such a case, there is a liquid tank made of reinforced plastic, polyethylene or the like. Some tanks of this type are further provided with a lid and those without a lid that are used with the upper side opened even during transportation.

The latter lidless tank is often relatively large,
In order to facilitate operations such as putting in and out of pesticides, stirring, spraying, etc., it is customary to use the water supply pipe and spill pipe of a sprayer or a stirring rod or other predetermined tool set in the tank.

(Problems to be solved by the invention) However, in the conventional liquid tank without a lid, which is opened at the upper side, when the liquid is put in the tank and is transported by a vehicle or the like, the tank is vibrated from the vehicle body. There was a problem that the liquid inside swelled and overflowed to the outside. This problem does not occur if the tank with a lid described above is used,
As described above, since the water supply pipe of the sprayer, the spill pipe, the stirring rod, etc. are set in the tank, the upper opening of the tank must be always open, so the tank with the lid is not used. .

Therefore, in order to deal with such a problem, the inner peripheral edge side of the rim portion that forms the upper opening of the tank is configured to project to the inside of the tank by a predetermined amount, and the liquid is tanked by the projecting portion. It is possible to prevent it from overflowing outside. However, in this way, when a large number of empty tanks are shipped from the factory or temporarily stored, the above-mentioned edge part interferes with other tanks in the lower tank. It is not possible to insert and stack them one after another, and the whole becomes bulky by that much, so a large space is taken up during the above-mentioned transportation and storage.

Also, Japanese Utility Model Publication No. 6-2322 and Japanese Utility Model Publication No. 63-27865 disclose a structure in which the opening has a smaller diameter than the bottom, but such structures cannot be stacked one after another.

The present invention addresses the above situation in the related art, and as a tank used when a liquid such as a pesticide is transported by a vehicle or the like, it is possible to prevent the liquid in the tank from wavy and overflowing outside during transportation. It is an object of the present invention to provide a liquid tank that can be prevented and can be stacked in a state where the tanks are sequentially inserted so that the bulk becomes low when not in use or stored.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, the inner diameter of the upper opening is larger than the outer diameter of the bottom, and a flange-shaped flange portion is provided outside the opening. The outer peripheral edge portion having an outer peripheral edge portion corresponding to the flange portion and an inner peripheral edge portion forming a central opening portion having a diameter smaller by a predetermined dimension than the opening portion of the tank main body with respect to the tank main body formed with To the inner peripheral edge portion, a rim member having an upwardly convex curved surface shape is detachably attached.

(Operation) According to the above configuration, even if the liquid level in the tank becomes wavy due to the vibration during transportation, the center portion is opened at the upper end of the tank body and the wave generated in the tank is transmitted to the outside of the tank. Since the rim member for preventing the jumping out is provided, it is blocked by the rim member generated on the liquid surface and returned to the inside of the tank. This effectively prevents the overflow from the opening during transportation.

On the other hand, when the liquid is not contained in the tank, the upper part of the tank main body is entirely opened by removing the lip member from the upper end of the tank main body. Therefore, in this state, it is possible to sequentially insert other tank bodies of the same kind into the tank body through the opening and stack them, and therefore, when transporting or storing a large number of tanks of this kind. It is possible to avoid making the whole bulky, and a smaller installation space or storage space is sufficient for that amount.

(Example) Hereinafter, an example of the present invention will be described.

As shown in FIG. 1, the liquid tank 1 according to this embodiment.
Is mainly composed of a plastic tank body 2 and a lip member 3. Of these, the tank body 2 is opened at the upper side, and a flange-shaped flange portion 2b is formed outside the upper end opening edge 2a. In addition, the tank body 2
In, the inner diameter of the upper opening edge 2a is slightly larger than the outer diameter of the bottom portion 2c.

On the other hand, as shown in FIG. 2, the lip member 3 has a diameter smaller than the outer peripheral edge portion 3a corresponding to the flange portion 2b of the tank body 2 and the upper end opening edge 2a of the tank body 2 by a predetermined dimension. And an inner peripheral edge 3b, and a portion surrounded by the inner peripheral edge 3b is a central opening 3c. An intermediate portion of the lip member 3 from the inner peripheral edge portion 3b to the outer peripheral edge portion 3a
Since 3d is formed in an upward convex curved surface shape, when a wave generated in the tank 1 hits the back surface side of the curved intermediate portion 3d and bounces back, the splash or reflected wave is generated in the central opening 3c. It is designed not to jump out from the outside.

Further, the lip member 3 is mounted with its outer peripheral edge portion 3a aligned with the flange portion 2b of the tank body 2. In that case, a rib 3e is formed on the outer peripheral edge portion 3a of the lip member 3, and a polychlorinated material for preventing liquid from leaking to the outside of the tank is provided between the rib 3e and the flange portion 2b of the tank body 2. A vinyl sealing pipe 4 is interposed. And
Plural places (four places in the illustrated example) of the mating portion are respectively fastened by respective fasteners composed of the metal fittings 5 and the bolts 6.

As a means for attaching the rim member 3 to the tank body 2, other means such as a hook may be used instead of the above fastener.

According to the above configuration, even if the liquid surface a in the tank 1 becomes wavy due to vibration or the like when the liquid tank 1 is transported, for example, a port mounted above the tank body 2 An intermediate portion 3d of the edge member 3 is formed in a curved shape in an upward convex shape, and an inner peripheral edge portion 3b of the mouth edge member 3 is formed smaller than the upper end opening edge 2a of the tank body 2 from the upper end opening edge 2a. Since it covers a certain area extending inward, the waves generated on the liquid surface a hit the back surface side of the intermediate portion 3d or the inner peripheral edge portion 3b of the lip member 3 and are returned to the inside of the tank body 2. Therefore, the liquid in the tank swells at the time of transportation or the like, and the tank upper opening (in this case, the central opening of the lip member 3 is
3c) can be effectively prevented from overflowing.

On the other hand, when the liquid is not contained in the tank 1, the upper part of the tank body 2 is initially opened by separating the rim member 3 from the tank body 2 after loosening the bolts 6 and removing the fasteners. Becomes Therefore, in such a case, it is possible to sequentially insert other tank bodies 2 of the same type into the body 2 from above the tank body 2 as shown by an arrow A in FIG. When a large number of tanks are transported or stored, the overall volume becomes smaller, and a smaller installation space or storage space is sufficient.

The shape of the lip member is not limited to that of the above embodiment. For example, as shown in FIG. 4, a ring-shaped lip member 3 ′ having a predetermined width or a lip member 3 ″ having a vertical rising portion 3d ″ at the middle portion as shown in FIG. It may be.

Further, although the liquid tank 1 in the above embodiment is a round tank whose shape when viewed from above is circular, it may of course be a rectangular tank whose shape when viewed from above is quadrangular or the like. .

(Effect of the Invention) As described above, according to the liquid tank of the present invention, even if the liquid level in the tank is ruffled due to vibration during transportation, the wave is blocked by the edge member at the top of the tank Since the liquid such as the pesticide in the tank overflows to the outside from the opening above the tank, it is effectively prevented.

Also, when the liquid is not contained in the tank, the rim member can be removed from the upper part of the tank to reduce the bulk when stacking many tanks of this type. The space occupied by the tank becomes smaller.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a partially longitudinal front view of a liquid tank, FIG. 2 is a plan view of the tank, and FIG.
FIG. 4 is a perspective view showing a state in which the rim member in the tank is removed and the tank main bodies are stacked, FIG. 4 is a perspective view showing another example of the rim member, and FIG. 5 is still another example of the rim member. FIG. 1 ... Liquid tank, 2 ... Tank body, 3, 3 ', 3 "
…… Edge member, 3c …… Central part (central opening).

Claims (1)

[Scope of utility model registration request] 1. A tank main body in which an inner diameter of an upper opening is larger than an outer diameter of a bottom and a flange-like flange is formed outside the opening, which corresponds to the flange. It has an outer peripheral edge portion and an inner peripheral edge portion forming a central opening having a diameter smaller than the opening portion of the tank body by a predetermined dimension, and an intermediate portion from the outer peripheral edge portion to the inner peripheral edge portion is convex upward. A liquid tank characterized in that a lip member formed in a curved shape is detachably attached.