JPH0687295U - Liquid inlet sealing device for liquid transfer tank - Google Patents

Abstract

(57) [Summary] [Purpose] When a lid is attached to a liquid inlet of a liquid transfer tank body, the lid can be tightly adhered to and sealed without deformation of the lid. An endless band 4 is fitted around a neck portion 3 of a liquid injection port 2 of a liquid transfer tank main body 1, and a radial bar-shaped member 9 is arranged on a lid 6 that closes the liquid injection port. By closely projecting the contact portion 7 of the lid to the liquid injection neck, and forming the outer wall of the contact portion vertically, and vertically applying the pressing force of the lid member by the crosspiece member, The vertical wall acts as a cylindrical column, so that the lid can be securely sealed without being deformed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to this invention, when a lid is attached to the liquid inlet of the liquid transfer tank body, the lid is closely attached to the liquid inlet without being deformed and sealed without using an inner lid. The present invention relates to a liquid injection port sealing device in a liquid transfer tank capable of

[0002]

[Prior art]

 BACKGROUND ART In recent years, liquid transfer tanks made of synthetic resin have been used as a means for carrying liquids such as agricultural water, disinfectant solutions, and other chemicals. The liquid transfer tank usually has a liquid injection port with a diameter of about 400 mm (may vary depending on the size of the tank body) on the upper part thereof. Is to be fitted with a lid.

In this state, the truck transports the fluid to the destination. During this transportation, it is unavoidable that the tank body itself or the liquid in the tank is shaken by the vibration of the truck. The liquid stored inside should not leak out from the inlet, especially if the liquid stored inside is a dangerous substance such as a powerful drug, but even if it is water, it will leak out. That's not a good thing. Therefore, the liquid inlet has to be always sealed by the lid, which cannot be easily sealed.

That is, conventional liquid transfer tanks and lids are usually molded by a rotary molding machine because of their shapes, and in particular, the lids are hollow. It is unavoidable that a slight distortion (deformation) will occur on both sides after demolding when molded by a rotary molding machine in this manner, but in order to achieve sealing while assuming this, the liquid transfer tank main body must be An inner lid having a concave cross section is fitted into the liquid inlet, and an outer lid (the above-mentioned lid) is fitted into the recess to achieve close contact between the inner lid and the liquid inlet, and liquid transfer. A metal endless band is arranged around the neck of the liquid injection port of the tank body, and a bar-shaped member shaped like an umbrella is arranged on the upper surface of the outer lid. It was considered that the band should be sealed by firmly connecting the band with the above.

[0005]

[Problems to be solved by the device]

 Although consideration was given to sealing as described above, in reality, sealing cannot be achieved. To examine the cause, when the outer lid is formed in a hollow shape as described above and is pressed by the cross member from above, there is no problem in the part where the cross member hits, but there is no problem with each of these cross members. This is because, as a result of the pressing of the portions, the spaces between the crosspieces slightly float, and the floating portions are not brought into close contact with each other.

When the cause of the floating between the crosspieces was further investigated, it was found that the outer peripheral wall of the outer lid was formed in a taper shape. That is, because the taper wall of the outer lid is present, when the crosswise member is vertically pressed from above the outer lid, the tapered wall is deformed in a wave shape, and as a result, the taper wall does not come into close contact with the closely contacted portion. The parts alternate with each other, and therefore leak out from the parts that do not adhere, that is, from the voids. It was also found that even if the tapered wall is molded by a rotary molding machine, it can be easily removed from the mold without forming this part in a tapered shape.

[0007]

[Means for Solving the Problems]

 Therefore, in order to solve the above-mentioned problems, the liquid inlet sealing device for a liquid transfer tank according to the present invention fits an endless band around the neck of the liquid inlet of the liquid transfer tank main body, In a liquid injection port sealing device in a liquid transfer tank, in which a radial bar-shaped member is arranged on a lid that closes an inlet, and the bar and the endless band are connected, the liquid injection port neck portion of the lid is provided. The outer wall of the close contact part is formed vertically while the close contact part to the lower part is projected downward.

[0008]

[Action]

 That is, by vertically forming the outer wall of the close contact portion of the liquid injection port neck portion of the lid body, by vertically applying the pressing force of the lid body by the cross member, the vertical wall acts as a cylindrical column. Therefore, it is possible to ensure the sealing property at all the contact parts without deforming the lid and without using the inner lid.

[0009]

【Example】

 Next, an embodiment of a liquid injection port sealing device in a liquid transfer tank according to the present invention will be described with reference to the drawings. 1 is a liquid transfer tank body rotationally molded of synthetic resin, and 2 is its liquid injection port. Is. The liquid inlet 2 is formed by folding a neck 3 formed at the upper end of the liquid transfer tank body 1 from the outside to the inside, and 4 is made of a metal fitted in a recess 5 formed on the outer periphery of the neck 3. Is an endless band.

Reference numeral 6 denotes a lid body rotationally molded of a synthetic resin. An outer peripheral end portion of the lid body 6 is made to project downward so as to be in close contact with the upper end of the neck 3 of the liquid injection port 2 of the liquid transfer tank body 1. It is as 7. The outer side wall 8 of the contact portion 7 is formed vertically. The central portion of the lower surface of the lid 6 is also projected downward, and this portion is an insertion portion into the liquid injection port 2.

Reference numeral 9 denotes a frame-shaped bar-shaped member of an umbrella arranged on the upper surface of the lid 6, and 10 denotes a bolt for connecting the bar-shaped member 9 and the endless band 4.

Reference numeral 11 is an endless packing disposed between the close contact portion 7 of the lid body 6 and the neck portion 3 of the liquid injection port 2.

Then, the lid 6 is inserted into the liquid injection port 2 of the liquid transfer tank body 1 with the protruding portion on the lower surface thereof, and then the end portions of the bar-shaped member 9 disposed on the upper surface of the lid 6 are connected to each other. An endless band 4 arranged on the outer periphery of the liquid injection port 2 is connected with a bolt 10.

Then, the lid 6 firmly adheres to the liquid inlet 2, and the adhered portions are the contact portion 7 of the lid 6 and the upper surfaces of the neck 3. In this case, pressure is applied to the lid body 6 in the vertical direction by the bar-shaped member 9, but since the outer wall 8 of the contact portion 7 is formed vertically, this vertical wall serves as a cylindrical pillar. The outer wall 8 does not deform even by the pressure.

Therefore, since the close contact portion 7 and the entire upper end of the neck portion 3 are firmly pressed, the liquid stored in the liquid transfer tank main body 1 does not leak to the outside. However, if the user is psychologically uneasy, the packing 11 may be arranged between the close contact portion 7 and the upper end of the neck portion 3.

In the present invention, since the sealing can be achieved as described above, the protrusion formed at the center of the lower surface of the lid 6 does not particularly contribute to achieving the hermeticity, and the positioning of the lid 6 It has only the desired function and does not require the use of an inner lid as in the past.

[0017]

[Effect of device]

 As described above, according to the liquid inlet sealing device for a liquid transfer tank according to the present invention, an endless band is fitted around the neck of the liquid inlet of the liquid transfer tank body, and the liquid inlet is closed. In a liquid pouring inlet sealing device in a liquid transfer tank in which a radial bar-shaped member is arranged on the lid, and the bar-shaped member and the endless band are connected, a close contact portion of the lid with the liquid injection neck is provided. Since it projects downward and the outer wall of this close contact is formed vertically, the vertical wall acts as a cylindrical column by vertically applying the pressing force of the lid by the crosspiece. This has an effect that the sealing property can be surely achieved in the entire contact portion without the lid body being deformed and without using the inner lid.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a liquid injection port sealing device in a liquid transfer tank according to the present invention.

FIG. 2 is an exploded perspective view of FIG.

[Explanation of symbols]

 1 Liquid Transfer Tank Body 2 Liquid Inlet 3 Neck 4 Endless Band 5 Recess 6 Lid 7 Adhesion 8 Outer Side Wall 9 Crosspiece 10 Bolt 11 Packing

Claims (2)

[Scope of utility model registration request] 1. A liquid transfer tank main body is fitted with an endless band around a neck portion of a liquid injection port, and a radial bar-shaped member is disposed on a lid for closing the liquid injection port,
In a liquid injection port sealing device in a liquid transfer tank that connects the crosspiece member and the endless band, a close contact portion of the lid with the liquid injection neck is provided so as to project downward, and an outer wall of the close contact portion is formed. A liquid injection port sealing device in a liquid transfer tank, which is formed vertically. 2. An endless packing is interposed between the upper end of the liquid injection neck and the lower end of the close contact portion of the lid.
A liquid inlet sealing device for a liquid transfer tank as described above.