U.S. patent application number 17/561800 was filed with the patent office on 2022-04-21 for large-caliber, hoop-free and well-sealed plastic barrel.
The applicant listed for this patent is Ningbo Changqi Fluorine Plastic Products Co., Ltd.. Invention is credited to Aoqi LI, Hongwei LI.
Application Number | 20220119167 17/561800 |
Document ID | / |
Family ID | |
Filed Date | 2022-04-21 |
![](/patent/app/20220119167/US20220119167A1-20220421-D00000.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00001.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00002.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00003.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00004.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00005.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00006.png)
![](/patent/app/20220119167/US20220119167A1-20220421-D00007.png)
United States Patent
Application |
20220119167 |
Kind Code |
A1 |
LI; Aoqi ; et al. |
April 21, 2022 |
LARGE-CALIBER, HOOP-FREE AND WELL-SEALED PLASTIC BARREL
Abstract
A large-caliber, hoop-free and well-sealed plastic barrel,
including a barrel body with a rim portion and a cover. The rim
portion is provided with a sealing ring, whose outer peripheral
surface is a first sealing surface. An outer side of the barrel
body is provided with an annular clamp ring, which is arranged
below the sealing ring. The cover is provided with a sealing groove
fitting the rim portion. An outer surface of an inner side wall of
the sealing groove tightly fit an inner wall of the rim portion. An
inner surface of an outer side wall of the sealing groove is
provided with a second sealing surface in a seal fit with the first
sealing surface. An outer peripheral surface of the cover is
provided with a hook strip, whose inner side wall is provided with
a flange to be clamped with the clamp ring.
Inventors: |
LI; Aoqi; (Ningbo, CN)
; LI; Hongwei; (Ningbo, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ningbo Changqi Fluorine Plastic Products Co., Ltd. |
Ningbo |
|
CN |
|
|
Appl. No.: |
17/561800 |
Filed: |
December 24, 2021 |
International
Class: |
B65D 43/02 20060101
B65D043/02; B65D 1/16 20060101 B65D001/16 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 4, 2021 |
CN |
202110623715.2 |
Claims
1. A hoop-free plastic barrel, comprising: a barrel body with a rim
portion; and a cover configured for sealing the rim portion;
wherein a side edge of the rim portion of the barrel body is
provided with a sealing ring; an outer peripheral surface of the
sealing ring is a first sealing surface; an outer side of the
barrel body is provided with an annular clamp ring; the annular
clamp ring is arranged below the sealing ring; the cover is
provided with a sealing groove configured for fitting the rim
portion; the sealing groove comprises an inner side wall and an
outer side wall; wherein the inner side wall of the sealing groove
is close to a center of the barrel body, and the outer side wall of
the sealing groove is away from the center of the barrel body; pan
outer side surface of the inner side wall of the sealing groove
tightly fit an inner wall of the rim portion; an inner side surface
of the outer side wall of the sealing groove is provided with a
second sealing surface in a seal fit with the first sealing
surface; an outer peripheral surface of the cover is provided with
a hook strip corresponding to the annular clamp ring; and an inner
side wall of the hook strip is provided with a flange configured to
be clamped with the annular clamp ring.
2. The hoop-free plastic barrel of claim 1, wherein the hook strip
is connected to a lower end of the outer side wall of the sealing
groove; and an inner side of a connection between the hook strip
and the outer side wall of the sealing groove is provided with a
tearing groove.
3. The hoop-free plastic barrel of claim 2, wherein the cover is
provided with a cover opening wrench; the hook strip is annularly
arranged below the outer side wall of the sealing groove; a head
end of the hook strip and a tail end of the hook strip are arranged
at two sides of the cover opening wrench, respectively; and the
head end of the hook strip is provided with a pull strip configured
to facilitate tearing away the hook strip.
4. The hoop-free plastic barrel of claim 3, wherein a connection
between the cover opening wrench and the outer side wall of the
sealing groove is provided with the tearing groove.
5. The hoop-free plastic barrel of claim 3, wherein the outer side
of the barrel body is provided with an annular retaining ring; and
a lower end of the cover opening wrench extends to an upper end
surface of the annular retaining ring.
6. The hoop-free plastic barrel of claim 1, wherein the outer
peripheral surface of the sealing ring is vertically provided with
the first sealing surface; the inner side surface of the outer side
wall of the sealing groove is provided with a protrusion ring; and
the protrusion ring is provided with the second sealing surface in
a seal fit with the first sealing surface.
7. The hoop-free plastic barrel of claim 6, wherein a thickness of
an upper edge of the rim portion is larger than a distance between
the first sealing surface and the second sealing surface.
8. The hoop-free plastic barrel of claim 7, wherein the thickness
of the upper edge of the rim portion is 0.1-1 mm larger than the
distance between the first sealing surface and the second sealing
surface.
9. The hoop-free plastic barrel of claim 6, wherein a lower end
surface of the protrusion ring is provided with an inclined surface
configured to facilitate an installation of the barrel body.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority from Chinese
Patent Application No. 202110623715.2, filed on Jun. 4, 2021. The
content of the aforementioned application, including any
intervening amendments thereto, is incorporated herein by reference
in its entirety.
TECHNICAL FIELD
[0002] This application relates to sealing of large-caliber plastic
barrels, and more particularly to a large-caliber, hoop-free and
well-sealed plastic barrel.
BACKGROUND
[0003] Nowadays, high-grade powdered or liquid chemical raw
materials (i.e., polytetrafluoroethylene (PTFE)) with
moisture-proof and sealing requirements are generally stored in
plastic barrels with a hoop. The hoop is used to fix and tighten
the barrel lid, so as to improve the sealing performance of the
barrel lid. However, such sealing method fails to arrive at the
desirable sealing of the plastic barrels. A liner or a nylon bag
may be arranged in the barrel for secondary packaging.
Specifically, since the ordinary large-caliber plastic barrels have
poor sealing performance, the items are primarily packaged by the
liner or nylon bag, and then subjected to secondary packaging with
the plastic barrel, so as to improve the sealing performance and
prevent leakage.
[0004] However, the manufacture process of the hoop-equipped
plastic barrel requires a procedure of fastening the hoop, which
specifically includes hooping, clamping, and rotational locking of
the hoop. Moreover, this operation can only be manually carried
out. Therefore, the production of such plastic barrel is
time-consuming and labor-intensive, and the locking may be
unreliable. In addition, it is difficult to achieve the
fully-automated batch production and packaging due to the
complicated process. Regarding the secondary packaging method, the
arrangement of the liner or nylon bag greatly increases the
production cost, and is also not suitable for the large-scale
automated production and packaging. Therefore, it is needed to
design a large-caliber, hoop-free and well-sealed plastic barrel,
which has simple structure, and is suitable for the mass automated
packaging.
SUMMARY
[0005] An objective of the present disclosure is to provide a
large-caliber, hoop-free and well-sealed plastic barrel, which has
a simple structure and good sealing performance, and is suitable
for the automated mass production and packaging.
[0006] The technical solutions of the present disclosure are
described as follows.
[0007] This application provides a hoop-free plastic barrel,
comprising:
[0008] a barrel body with a rim portion; and
[0009] a cover configured for sealing the rim portion;
[0010] wherein a side edge of the rim portion of the barrel body is
provided with a sealing ring; an outer peripheral surface of the
sealing ring is a first sealing surface; an outer side of the
barrel body is provided with an annular clamp ring; the annular
clamp ring is arranged below the sealing ring; the cover is
provided with a sealing groove configured for fitting the rim
portion; the sealing groove comprises an inner side wall and an
outer side wall; wherein the inner side wall of the sealing groove
is close to a center of the barrel body, and the outer side wall of
the sealing groove is away from the center of the barrel body; an
outer side surface of the inner side wall of the sealing groove
tightly fit with an inner wall of the rim portion; an inner side
surface of the outer side wall of the sealing groove is provided
with a second sealing surface in a seal fit with the first sealing
surface; an outer peripheral surface of the cover is provided with
a hook strip corresponding to the annular clamp ring; and an inner
side wall of the hook strip is provided with a flange configured to
be clamped with the annular clamp ring.
[0011] In some embodiments, the hook strip is connected to a lower
end of the outer side wall of the sealing groove; an inner side of
a connection between the hook strip and the outer side wall of the
sealing groove is provided with a tearing groove. The tearing
groove largely facilitates a disassembly of the cover after an
installation.
[0012] In some embodiments, the cover is provided with a cover
opening wrench; the hook strip is annularly arranged below the
outer side wall of the sealing groove; a head end of the hook strip
and a tail end of the hook strip are arranged at two sides of the
cover opening wrench, respectively; and the head end of the hook
strip is provided with a pull strip configured to facilitate
tearing away the hook strip. The annularly arranged hook strip
ensures the fixing reliability of the cover, and the pull strip and
the tearing groove help to tear the hook strip, which facilitates
the disassembly of the cover.
[0013] In some embodiments, a connection between the cover opening
wrench and the outer side wall of the sealing groove is provided
with the tearing groove. The tearing groove helps to lift up and
open the cover opening wrench.
[0014] In some embodiments, an outer side of the barrel body is
provided with the annular retaining ring; and a lower end of the
cover opening wrench extends to an upper end surface of the annular
retaining ring, effectively avoiding the cover opening wrench being
opened accidently and improving the reliability of the barrel
body.
[0015] In some embodiments, the outer peripheral surface of the
sealing ring is vertically provided with the first sealing surface;
the inner side surface of the outer side wall of the sealing groove
is provided with a protrusion ring; and the protrusion ring is
provided with the second sealing surface in a seal fit with the
first sealing surface.
[0016] In some embodiments, a thickness of an upper edge of the rim
portion is larger than a distance between the first sealing surface
and the second sealing surface. The rim portion and the sealing
groove are in an interference fit, which effectively improves the
sealing performance of the barrel body.
[0017] In some embodiments, the thickness of the upper edge of the
rim portion is 0.1-1 mm larger the distance between the first
sealing surface and the second sealing surface. When the difference
is within such interval, the rim portion of the barrel body can be
installed to a deeper position inside the sealing groove, providing
a better sealing performance and fixing reliability, and
facilitating the installation of the cover.
[0018] In some embodiments, a lower end surface of the protrusion
ring is provided with an inclined surface configured to facilitate
an installation of the barrel body. The inclined surface help to
guide and position during the installation of the rim portion,
which facilitates the positioning and packaging of the equipment
during the automated production, reducing the requirements on the
accuracy of the equipment, and improving the fault tolerance rate
of the equipment.
[0019] The beneficial effects of the present disclosure are
described as follows.
[0020] In the plastic barrel, the sealing groove is in seal fit
with the rim portion, which allows the reliable sealing of the
barrel body. Specifically, the first sealing surface provided on
the sealing ring tightly fit the second sealing surface on the
inner side surface of the outer side wall of the sealing groove.
The lower end surface of the protrusion ring is provided with the
inclined surface to guide the installation of the barrel body, and
thus the rim portion of the barrel body can be easily installed in
the sealing groove, facilitating the automatic production. In
addition, the clamp ring arranged on the outer side of the barrel
body is clamped with the corresponding hook strip to fix the cover
and avoid an axial movement of the cover after the installation, so
as to further ensure the sealing reliability of the barrel body.
Therefore, the sealing and fixing of the barrel body and the cover
can be completed by one-step pressing, which is simple and easy to
operate, such that the mass automatic sealing packaging and
production may be easily reached, improving the production
efficiency, reducing the labor intensity and shortening the
production cycle. The tearing groove facilitates the operator to
tear the hook strip along the tearing groove, such that the cover
has simple disassembly.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 schematically depicts a cross-sectional structure of
a barrel body according to an embodiment of the present
disclosure;
[0022] FIG. 2 is an enlarged view of part A in FIG. 1;
[0023] FIG. 3 schematically depicts a structure of a cover
according to an embodiment of the present disclosure;
[0024] FIG. 4 is a cross-sectional view of the structure of the
cover in FIG. 3;
[0025] FIG. 5 is an enlarged view of part B in FIG. 4;
[0026] FIG. 6 schematically depicts the barrel body after the cover
is installed according to an embodiment of the present
disclosure;
[0027] FIG. 7 schematically depicts a cross-sectional view of the
barrel body in FIG. 6;
[0028] FIG. 8 is an enlarged view of part C in FIG. 7; and
[0029] FIG. 9 schematically depicts the plastic barrel according to
an embodiment of the present disclosure after a hook strip is
torn.
DETAILED DESCRIPTION OF EMBODIMENTS
[0030] The present disclosure will be further described in detail
below with reference to the embodiments and the accompany
drawings.
[0031] Referring to an embodiment shown in FIGS. 1-9, a
large-caliber, hoop-free and well-sealed plastic barrel is
provided, which includes a barrel body 1 providing with a rim
portion 3 and a cover 2 configured for sealing the rim portion 3.
An outer edge of the rim portion 3 of the barrel 1 is integrally
provided with a sealing ring 4. An outer peripheral surface of the
sealing ring 4 is vertically provided with a first sealing surface
4.1. The cover 2 is provided with a sealing groove 5 configured for
fitting the rim portion 3. The sealing groove 5 includes an inner
side wall 5.1 and an outer side wall 5.2. The inner side wall 5.1
of the sealing groove 5 is close to a center of the barrel body 1,
and the outer side wall 5.2 of the sealing groove 5 is away from
the center of the barrel body 1. An outer side surface of the inner
side wall 5.1 of the sealing groove 5 tightly fit with an inner
wall of the rim portion 3. An inner side surface of the outer side
wall 5.2 of the sealing groove 5 is provided with a protrusion ring
5.3. The protrusion ring 5.3 is provided with a second sealing
surface 5.4 that is in a seal fit with the first sealing surface
4.1. A lower end surface of the protrusion ring 5.3 is provided
with an inclined surface 5.5 configured to allow the barrel body 1
to be conveniently installed.
[0032] An outer side of the barrel body 1 is provided with an
annular clamp ring 6. The annular clamp ring 6 is arranged below
the sealing ring 4. An outer peripheral surface of the cover 2 is
provided with a hook strip 7 corresponding to the annular clamp
ring 6. The cover 2 is also provided with a cover opening wrench
10. The hook strip 7 is annularly arranged below the outer side
wall 5.2 of the sealing groove 5. A head end of the hook strip 7
and a tail end of the hook strip 7 are arranged at two sides of the
cover opening wrench 10, respectively. The head end of the hook
strip 7 is provided with a pull strip 11 configured to conveniently
tear the hook strip 7. An inner side wall of the hook strip 7 is
provided with a flange 9 fixedly clamping with the annular clamp
ring 6. The hook strip 7 is connected to a lower end of the outer
side wall 5.2 of the sealing groove 5. A tearing groove 8 is
provided on an inner side of a connection between the hook strip 7
and the outer side wall 5.2 of the sealing groove 5. An outer side
of the barrel body 1 is provided with an annular retaining ring 12.
A lower end of the cover opening wrench 10 extends to an upper end
surface of the annular retaining ring 12.
[0033] A connection between the cover opening wrench 10 and the
outer side wall 5.2 of the sealing groove 5 may be provided with
the tearing groove 8. The tearing groove 8 on the cover opening
wrench 10 is aligned with the tearing groove 8 on the hook strip 7.
The tearing groove 8 allows an operator to conveniently tear off
the cover opening wrench 10, and then allows the operator to
conveniently tear the hook strip 7 along the tearing groove 8
through the pull strip 11. The tearing groove 8 has a thickness of
0.3-0.6 mm, and a width of 0.5-0.6 mm.
[0034] A thickness of an upper edge of the rim portion 3 is larger
than a distance between the first sealing surface 4.1 and the
second sealing surface 5.4. A 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
0.1-1 mm; preferably 0.5 mm.
[0035] Raw material of the barrel body 1 and the cover 2 is made of
polypropylene (PP), polyethylene (PE) or a modified engineering
plastic of PE. A shrinkage rate of a product obtained through
injection molding of the raw material is less than 1.5% to ensure
the sealing performance of the product.
[0036] A process of using the large-caliber, hoop-free and
well-sealed plastic barrel is described as follows. The cover 2 is
pressed on an upper end of the barrel body 1, that is, the rim
portion 3 of the barrel body 1 is installed in the sealing groove
5. Due to the inclined surface 5.5 arranged on the lower end
surface of the protrusion ring 5.3, the rim portion of the barrel
body can be easily installed in the sealing groove 1. The inclined
surface 5.5 plays a guiding role and facilitates the automated
production. Since the thickness of the upper edge of the rim
portion 3 is greater than the distance between the first sealing
surface 4.1 and the second sealing surface 5.4, the outer side
surface of the inner side wall 5.1 of the sealing groove 5 and the
inner wall of the rim portion 3 are in a sealing and tight fit. The
second sealing surface 5.4 provided on the protrusion ring 5.3
closely fits with the first sealing surface 4.1 on the sealing ring
4 to achieve an interference fit. In other words, a seal fit
between the cover 2 and the edge 3 of the barrel body 1 is achieved
through the plasticity of the cover 2, and the sealing reliability
of the barrel body 1 is improved through double-sided sealing. In
this process, the annular clamp ring 6 arranged on the outer side
surface of the barrel body 1 is clamped with the hook strip 7.
Specifically, the clamp ring 6 is clamped with the flange 9
arranged on the hook strip 7 to fix the cover 2 and avoid an axial
movement of the cover 2 after the installation, so as to further
ensure the sealing reliability for the barrel body 1. When the
cover 2 needs to be disassembled, the hook strip 7 is torn along
the tearing groove 8 through the pull strip 11, that is, the clamp
ring is separated from the flange 9 to release a clamping state,
and the operator can lift up the cover 2 at this time.
[0037] The above-mentioned embodiments are merely preferred
embodiments of this disclosure, and are not intended to limit the
present disclosure. It should be understood that variations and
modifications made by those skilled in the art without departing
from the spirit of this disclosure should fall within the scope of
the present disclosure defined by the appended claims.
* * * * *