JP3234857U - Large diameter clampless highly airtight plastic tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a large-diameter clampless highly airtight plastic tank having a simple structure and good airtightness, which is suitable for an automated package for mass production. SOLUTION: A large-diameter clampless highly airtight plastic tank is provided with a tank body having a mouth edge portion and a sealing lid, and a sealing ring is provided on the mouth edge portion of the tank body, and an outer peripheral surface of the sealing ring is provided. Is the first sealing surface, an annular locking collar is also provided on the outer surface of the tank body, the locking collar is located below the sealing ring, and a sealing groove 5 for attaching the mouth edge to the sealing lid is provided. The seal groove is provided and includes the inner side wall 5.1 of the seal groove and the outer wall 5.2 of the seal groove. A second sealing surface 5.4 that fits tightly with the first sealing surface is provided on the inner surface of the outer wall of the seal, and a tear tape 7 corresponding to the locking collar is provided on the outer peripheral surface of the sealing lid, and the inner side wall of the tear tape is provided. Is provided with a flange 9 that engages with the locking collar. [Selection diagram] FIG. 5

Description

The present invention relates to the field of sealing a large-diameter plastic tank, and particularly to a large-diameter clampless highly airtight plastic tank.

Currently, plastic tanks with clamps are used for high-end chemical industry raw materials that are required to be moisture-proof and hermetically sealed in powder or liquid such as polytetrafluoroethylene in Japan and overseas. Although it improves the sealing, the sealing of the plastic tank of this tightening principle can only reach the general level and it is very difficult to achieve the effect of high sealing; or the liner or nylon in the tank. A bag is provided for double wrapping, that is, because the airtightness of an ordinary large-diameter plastic tank is poor, the article is first wrapped in a liner or nylon bag and then secondarily wrapped via the plastic tank. The airtightness was improved and leakage was prevented.

However, in the above two packaging methods, the plastic tank that is sealed via the clamp must include the clamp tightening process in the processing, manufacturing, and packaging processes, and the specific flow of this process is clamp fitting, caulking, and clamping. It requires procedures such as rotating and tightening, and since this process can only be completed manually, it takes time and effort, it is easy to cause the phenomenon of not tightening securely, and at the same time there are many procedures, so it is fully automated. It is difficult to realize a mass production package of. The secondary packaging method, that is, the packaging method in which the liner or nylon bag is provided, requires the liner or nylon bag to be provided in the plastic tank, which greatly increases the manufacturing cost of the company and is also suitable for mass production automated packaging. There is no. Therefore, in order to solve the above problems, a large-diameter clampless highly airtight plastic tank having a simple structure and a sealing effect suitable for mass-produced automated packages is required.

It is a technical subject of the present invention to provide a large-diameter clampless highly airtight plastic tank having a simple structure, good airtightness, and suitable for a mass-produced automated package.

The present invention has taken the following technical measures to solve the above problems.
A large-diameter clampless highly airtight plastic tank provided with a tank body having a rim and a sealing lid for sealing the rim, which is sealed on the side of the rim of the tank body. A ring is provided, the outer peripheral surface of the sealing ring is the first sealing surface, the outer surface of the tank body is also provided with an annular locking collar, and the locking collar is located below the sealing ring. A seal groove for attaching the rim portion to the sealing lid is provided, the seal groove includes an inner side wall of the seal groove and an outer wall of the seal groove, and the outer surface of the inner side wall of the seal groove is the rim portion. A second sealing surface is provided on the inner surface of the outer wall of the sealing groove and is tightly fitted with the first sealing surface, and a tear tape corresponding to the locking collar is provided on the outer peripheral surface of the sealing lid. A flange that engages with the locking collar is provided on the inner wall of the tear tape.

Further, the tear tape is connected to the lower end of the outer wall of the seal groove, and a tear groove is provided inside the joint portion between the tear tape and the outer wall of the seal groove. The advantage is that the installation of the tear groove can greatly improve the convenience of removing the sealing lid after installation.

Further, the sealing lid is also provided with a lid opening pull-up portion, the tear tape is provided in a ring shape below the outer wall of the seal groove, and the head end and the end of the tear tape are each lid opening pull-up portion. It is located on both sides of the tier tape, and a picking piece for easily peeling off the tier tape is provided at the head end of the tier tape. The advantage is that the ring-shaped tier tape effectively ensures the reliability of the sealing lid fixing, and the installation of the picking piece and the tear groove makes it convenient to peel off the tier tape. It is easy to remove.

Further, a tear groove is provided at the joint portion between the lid opening pull-up portion and the outer wall of the seal groove. The advantage is that the installation of the tear groove makes it easier to pull up or open the lid opening pull-up.

Further, an annular retaining ring is also provided on the outside of the tank body, and the lower end of the lid opening pull-up portion extends to the upper end surface of the retaining ring. The advantage is that the lid opening pull-up portion extends to the upper end surface of the retaining ring, effectively reducing the possibility of the lid opening pull-up portion opening unexpectedly, and improving the reliability of the tank body.

Further, a first sealing surface perpendicular to the outer peripheral surface of the sealing ring is provided, a convex ring is provided on the inner surface of the outer wall of the sealing groove, and the convex ring is tightly fitted with the first sealing surface. A surface is provided.

Further, the thickness of the upper edge of the rim portion is larger than the distance between the first sealing surface and the second sealing surface. The advantage is that the tight-fitting rim and seal groove can effectively improve the tightness of the tank body.

Further, the difference between the thickness of the upper edge of the mouth edge and the distance between the first sealing surface and the second sealing surface is 0.1 mm to 1 mm. The advantage is that if the difference is within the above range, the rim of the tank body can be mounted deeper inside the seal groove, the sealing effect is better, it can be fixed more securely, and at the same time the sealing lid. It is also convenient to install.

Further, an inclined surface convenient for attaching the tank body is provided on the lower end surface of the convex ring. The advantage is that the installation of the inclined surface facilitates the positioning and mounting guide of the rim, which is convenient for the positioning and packaging of the equipment during the automated production of the enterprise, reduces the precision requirement for the equipment, and the resistance of the equipment. Improve disability.

Compared with the prior art, the advantage of the present invention is that a highly airtight package of the tank body can be realized through the tight fitting of the provided seal groove and the rim portion, and specifically, it is provided in the airtight ring. The first sealing surface is tightly fitted with the second sealing surface provided on the inner surface of the outer wall of the sealing groove to realize sealing, and the lower end surface of the convex ring is provided with an inclined surface convenient for mounting the tank body. Therefore, the rim of the tank body can be easily installed in the seal groove, which acts as an installation guide and is convenient for automated production. At the same time, the locking collar provided on the outer surface of the tank body engages with the corresponding tear tape to fix the sealing lid and prevent axial movement after the sealing lid is attached. Ensuring the reliability of sealing. As you can see, the sealing and fixing of the tank body and the sealing lid can be pressed only through one process, which is convenient and easy to operate, so companies can realize a large amount of automated sealed packaging. , The production of automation factory is also realized, the production efficiency of the company is improved, the labor is greatly reduced, and the production cycle is shortened to meet the demands of modern companies for the development of industrial intelligence and full automation. If removal is required, the tear groove installation allows the operator to tear the tear tape along the tear groove, making it relatively easy to remove while ensuring that the sealing lid is tightly closed.

It is a schematic cross-sectional structural view of the tank body of this invention. It is an enlarged view of the part A in FIG. It is a structural schematic diagram of the sealing lid of this invention. It is a schematic cross-sectional structure view of FIG. It is an enlarged view of the part B in FIG. It is the schematic of the tank body of this invention after attaching the sealing lid. FIG. 6 is a schematic cross-sectional structure diagram of FIG. It is an enlarged view of the part C in FIG. It is a figure which shows the state after peeling off the tear tape of this invention.

The present invention will be described in more detail below with reference to the drawings and examples.

A large-diameter clampless highly airtight plastic tank including a tank body 1 having a rim portion 3 and a sealing lid 2 for sealing the rim portion 3, wherein the rim portion of the tank body 1 is sealed. A sealing ring 4 is integrally provided on the outer side of the sealing ring 3, a first sealing surface 4.1 perpendicular to the outer peripheral surface of the sealing ring 4 is provided, and a seal for attaching the mouth edge portion 3 to the sealing lid 2. A groove 5 is provided, and the seal groove 5 includes a side wall 5.1 inside the seal groove and an outer wall 5.2 of the seal groove, and the outer surface of the side wall 5.1 inside the seal groove is a mouth. It fits tightly with the inner wall of the edge portion 3, a convex ring 5.3 is provided on the inner side surface of the outer wall 5.2 of the seal groove, and the convex ring 5.3 fits tightly with the first sealing surface 4.1. A second sealing surface 5.4 is provided, and an inclined surface 5.5 convenient for mounting the tank body 1 is provided on the lower end surface of the convex ring 5.3.

An annular locking collar 6 is also provided on the outer surface of the tank body 1, the locking collar 6 is located below the sealing ring 4, and a tier corresponding to the locking collar 6 is provided on the outer peripheral surface of the sealing lid 2. A tape 7 is provided, a lid opening pull-up portion 10 is also provided on the sealing lid 2, the tear tape 7 is provided in a ring shape below the outer wall 5.2 of the seal groove, and the head of the tear tape 7 is provided. The ends and ends are located on both sides of the lid opening pull-up portion 10, and a picking piece 11 for easily peeling off the tear tape 7 is provided at the head end of the tear tape 7; on the inner side wall of the tear tape 7. A flange 9 that engages with the locking collar 6 is provided. The tear tape 7 is connected to the lower end of the outer wall 5.2 of the seal groove, and a tear groove 8 is provided inside the joint portion between the tear tape 7 and the outer wall 5.2 of the seal groove. An annular retaining ring 12 is also provided on the outside of the tank body 1, and the lower end of the lid opening pull-up portion 10 extends to the upper end surface of the retaining ring 12.

A tear groove 8 is provided at the joint between the lid opening pull-up portion 10 and the outer wall 5.2 of the seal groove, and the tear groove 8 on the lid opening pull-up portion 10 is the tear groove 8 on the tear tape 7. Aligned. The tear groove 8 provided is convenient for the operator to peel off the lid opening pull-up portion 10 along the tear groove 8 and then to peel the tear tape 7 along the tear groove 8 through the picking piece 11. .. Here, the thickness of the tear groove 8 is preferably 0.3 mm to 0.6 mm, and the width is preferably 0.5 mm to 0.6 mm.

The thickness of the upper edge of the rim portion 3 is larger than the distance between the first sealing surface 4.1 and the second sealing surface 5.4. The difference between the thickness of the upper edge of the rim portion 3 and the distance between the first sealing surface 4.1 and the second sealing surface 5.4 is 0.1 mm to 1 mm, preferably 0.5 mm.

The raw materials of the tank body 1 and the sealing lid 2 are manufactured of PP, PE or PE modified engineering plastic, and the molding shrinkage rate of the raw materials after injection molding is less than 1.5%, so that the product is hermetically sealed. Avoid the impact on.

In the process of use of the present invention, the sealing lid 2 is covered on the upper end of the tank body 1, that is, the rim portion 3 of the tank body 1 is attached in the seal groove 5, and the tank body 1 is placed on the lower end surface of the convex ring 5.3. Since the inclined surface 5.5 is provided, which is convenient for mounting the tank body 1, the mouth edge portion 3 of the tank body 1 can be easily mounted in the seal groove 5, which serves as a guide and is convenient for automated production. Since the thickness of the upper edge of the mouth edge portion 3 is larger than the distance between the first sealing surface 4.1 and the second sealing surface 5.4, the outer surface of the side wall 5.1 inside the sealing groove. Is tightly fitted to the inner wall of the rim portion 3, and the second sealing surface 5.4 provided on the convex ring 5.3 is tightly fitted to the first sealing surface 4.1 on the sealing ring 4. A fit is realized, that is, a tight fit with the rim portion 3 of the tank body 1 is realized through the plasticity of the sealing lid 2 itself, and double-sided sealing is realized to improve the reliability of the sealing of the tank body 1. In this process, the locking collar 6 provided on the outer surface of the tank body 1 engages with the corresponding tear tape 7, and specifically the locking collar 6 engages with the flange 9 provided on the tear tape 7. As a result, the sealing lid 2 is fixed and the axial movement after the sealing lid 2 is attached is prevented, so that the reliability of sealing the tank body 1 is further ensured. When trying to remove the sealing lid 2, the tear tape 7 is peeled off along the tear groove 8 through the provided picking piece 11, and the locking collar 6 is separated from the flange 9 to release the crimped state. At this time, the operator can pull up the sealing lid 2 upward.

The present invention has been described in detail above, but the above description is only for preferred embodiments of the present invention, and the scope of protection of the present invention is not limited by these. A person skilled in the art can make various modifications and improvements without departing from the technical idea of the present invention, and such modifications and improvements are included in the scope of protection of the present invention.

Claims (9)

A large-diameter clampless highly airtight plastic tank provided with a tank body having a rim portion and a sealing lid for sealing the rim portion, on the side surface of the rim portion of the tank body. A sealing ring is provided, the outer peripheral surface of the sealing ring is the first sealing surface, the outer surface of the tank body is also provided with an annular locking collar, and the locking collar is located below the sealing ring. A seal groove for attaching the mouth edge portion is provided on the sealing lid, the seal groove includes an inner side wall of the seal groove and an outer wall of the seal groove, and the outer surface of the inner side wall of the seal groove is formed. A second sealing surface that fits tightly with the inner wall of the mouth edge portion and fits tightly with the first sealing surface is provided on the inner surface of the outer wall of the sealing groove, and the locking collar is formed on the outer peripheral surface of the sealing lid. A large-diameter, clampless, highly airtight plastic tank provided with a corresponding tear tape and a flange engaged with the locking collar on the inner wall of the tear tape. The large-diameter clampless according to claim 1, wherein the tear tape is connected to the lower end of the outer wall of the seal groove, and a tear groove is provided inside the joint portion between the tear tape and the outer wall of the seal groove. Highly airtight plastic tank. The sealing lid is also provided with a lid opening pull-up portion, the tear tape is provided in a ring shape below the outer wall of the seal groove, and the head end and the end of the tear tape are each of the lid opening pull-up portion. The large-diameter clampless highly airtight plastic tank according to claim 2, which is located on both sides and is provided with a picking piece at the head end of the tear tape for easily peeling off the tear tape. The large-diameter clampless highly airtight plastic tank according to claim 3, wherein a tear groove is provided at a joint portion between the lid opening pull-up portion and the outer wall of the seal groove. The large-diameter clampless highly airtight plastic tank according to claim 3, wherein an annular retaining ring is also provided on the outside of the tank body, and the lower end of the lid opening pull-up portion extends to the upper end surface of the retaining ring. .. A first sealing surface perpendicular to the outer peripheral surface of the sealing ring is provided, a convex ring is provided on the inner surface of the outer wall of the sealing groove, and the convex ring is tightly fitted with the first sealing surface. The large-diameter clampless highly airtight plastic tank according to claim 1. The large-diameter clampless highly airtight plastic tank according to claim 6, wherein the thickness of the upper edge of the mouth edge portion is larger than the distance between the first airtight surface and the second airtight surface. The large-diameter clampless high sealing property according to claim 7, wherein the difference between the thickness of the upper edge of the rim portion and the distance between the first sealing surface and the second sealing surface is 0.1 mm to 1 mm. Plastic tank. The large-diameter clampless highly airtight plastic tank according to claim 6, wherein an inclined surface convenient for mounting the tank body is provided on the lower end surface of the convex ring.

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