CN216284832U - Testing tool for oxygen permeability of LDPE (Low-Density polyethylene) bottle - Google Patents
Testing tool for oxygen permeability of LDPE (Low-Density polyethylene) bottle Download PDFInfo
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- CN216284832U CN216284832U CN202121812793.9U CN202121812793U CN216284832U CN 216284832 U CN216284832 U CN 216284832U CN 202121812793 U CN202121812793 U CN 202121812793U CN 216284832 U CN216284832 U CN 216284832U
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Abstract
A testing tool for the oxygen transmission capacity of an LDPE bottle relates to the technical field of oxygen transmission rate testing. It is used for adopting the commercialization equipment of coulometry, including: the oxygen sealing cylinder is hermetically assembled with the commercialized equipment, a containing cavity is arranged between the oxygen sealing cylinder and the commercialized equipment, and the LDPE bottle to be tested is arranged in the containing cavity; the guide pipe is hermetically assembled with the oxygen sealing cylinder, penetrates through the oxygen sealing cylinder and is communicated with the accommodating cavity, and the guide pipe is used for introducing or leading out oxygen into the accommodating cavity; and the air guide supporting assembly is hermetically assembled with the LDPE bottle, penetrates through the LDPE bottle to be tested and is communicated with the inner cavity of the LDPE bottle, is used for supporting and fixing the LDPE bottle and is also used for guiding in or guiding out detection gas to the inner cavity of the LDPE bottle to be tested. The testing tool for the oxygen permeability of the LDPE bottle has the advantages of simple structure, ingenious design, convenience in operation and low cost.
Description
Technical Field
The utility model relates to the technical field of oxygen transmission rate testing, in particular to a testing tool for the oxygen transmission rate of an LDPE (low-density polyethylene) bottle.
Background
In the field of medicine packaging, the oxygen permeability of the medicine inner packaging material can directly influence the quality of the medicine, so the oxygen permeability of the medicine inner packaging material must be monitored. The method for measuring the gas permeability of YB00082003-2015 in the current national medicine package material standard is to test the gas permeability of a medicine package material and comprises two test methods: differential pressure method and coulometry. The coulometry method is specially used for detecting the oxygen permeability, and the principle is as follows: the sample divides the gas permeable chamber into two parts, one side of the sample is introduced with oxygen, and the other side is introduced with nitrogen carrier gas. The oxygen passing through the sample enters the coulometric analysis detector along with the nitrogen carrier gas to carry out chemical reaction and generate voltage, and the voltage is in direct proportion to the oxygen passing through the coulometric analysis detector in unit time.
Although many companies have developed commercial devices for coulometry, it is mainly suitable for testing a film material (i.e., a packaging material can be spread into a sheet of film), in which a gas permeable chamber is divided into two parts by a film material, one side is filled with nitrogen gas, the other side is filled with oxygen gas, and the oxygen gas penetrating through the film material is carried by the nitrogen gas to a detector for analysis.
When the LDPE bottle is subjected to an oxygen transmission rate test, the LDPE bottle cannot be unfolded into a film material at all because the outer surface of the LDPE bottle is arc-shaped and the LDPE bottle is hard in material; even though the LDPE bottle with the capacity of less than 5ml can be unfolded into a film material, the unfolded area of the LDPE bottle can not reach the area required by the film material, so that the conventional commercial equipment can not directly test the oxygen transmission capacity of the LDPE bottle with small capacity. Therefore, to measure low capacity LDPE bottles, a special tool must be designed and the mold must meet the test requirements of YBB 000820003.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a testing tool for the oxygen transmission capacity of an LDPE (low-density polyethylene) bottle aiming at the defects and shortcomings in the prior art, and the testing tool has the advantages of simple structure, ingenious design, convenience in operation and low cost.
In order to achieve the purpose, the utility model adopts the technical scheme that: a test kit for the oxygen transmission capacity of an LDPE bottle for use in a commercial apparatus employing coulometry, comprising: the device comprises an oxygen sealing cylinder, a commercial device and a low-density polyethylene (LDPE) bottle, wherein the oxygen sealing cylinder is in sealing assembly with the commercial device, a containing cavity is formed between the oxygen sealing cylinder and the commercial device, and the LDPE bottle to be tested is arranged in the containing cavity; the guide pipe is hermetically assembled with the oxygen sealing cylinder, penetrates through the oxygen sealing cylinder and is communicated with the accommodating cavity, and the guide pipe is used for introducing or leading out oxygen into the accommodating cavity; the air guide supporting assembly is in sealing assembly with the LDPE bottle to be tested, penetrates through the LDPE bottle to be tested and is communicated with the inner cavity of the LDPE bottle to be tested, is used for supporting and fixing the LDPE bottle to be tested, and is also used for guiding in or guiding out detection gas to the inner cavity of the LDPE bottle to be tested.
Further, the oxygen sealing cartridge comprises: a barrel forming a receiving cavity with commercial equipment; the fixing part is arranged on one side, close to the commercialized equipment, of the cylinder body and is used for being fixedly assembled with the commercialized equipment; and, a first fixing nut screw-assembled with the commercialized equipment through the fixing part.
Furthermore, the fixing part protrudes out of the outer side wall of the cylinder body, and the fixing part and the cylinder body are integrally formed.
Further, the oxygen sealing cylinder further comprises a mounting part and an upper cover, wherein the mounting part is arranged on one side of the cylinder body, which is far away from the commercialized equipment, and is integrally formed with the cylinder body; the upper cover is arranged on one side, far away from the commercialized equipment, of the barrel body and is fixedly assembled with the mounting part through a second fixing nut.
Further, the catheter includes: the air inlet end of the air inlet pipe is connected with an oxygen outlet hole on the commercialized equipment in a sealing mode, and the air outlet end of the air inlet pipe penetrates through the fixing part and is connected with one side, far away from the commercialized equipment, of the cylinder in a sealing mode; the air inlet end of the air outlet pipe is connected with one side, far away from the commercialized equipment, of the cylinder body in a sealing mode, and the air outlet end of the air outlet pipe penetrates through the fixing part and is connected with the air inlet end of the commercialized equipment in a sealing mode; and the first connecting nut is sleeved on the air inlet pipe and the air outlet pipe and is fixedly connected with the oxygen sealing cylinder.
Further, the air guide support assembly includes: the gas inlet end of the gas inlet supporting pipe is hermetically connected with the gas outlet end of detection gas of commercial equipment, and the gas outlet end of the gas inlet supporting pipe is connected with the bottom of the LDPE bottle to be tested; the gas outlet support pipe is connected with the bottom of the LDPE bottle to be tested, and the gas outlet end of the gas outlet support pipe is hermetically connected with the gas inlet end of the detection gas of the commercial equipment; and the second connecting nut is sleeved on the air inlet supporting pipe and the air outlet supporting pipe respectively and is fixedly connected with commercial equipment.
Furthermore, the air outlet end of the air inlet supporting pipe and the air inlet end of the air outlet supporting pipe both penetrate through the bottom of the LDPE bottle to be tested and extend towards one side of the top of the LDPE bottle to be tested, and the air outlet end of the air inlet supporting pipe is closer to the top of the LDPE bottle to be tested.
Furthermore, the air guide supporting assembly further comprises a supporting block, and the air inlet supporting pipe and the air outlet supporting pipe penetrate through the supporting block and are connected with the bottom of the LDPE bottle to be tested in a sealing mode.
Furthermore, an installation notch is formed in one side, close to the LDPE bottle to be tested, of the supporting block, and the installation notch is matched with the shape of the bottom of the LDPE bottle to be tested.
Further, the guide tube, the air inlet support tube and the air outlet support tube are all air-impermeable.
After the technical scheme is adopted, the utility model has the beneficial effects that: through an oxygen sealed section of thick bamboo and pipe supporting component, realize that the LDPE bottle carries out oxygen transmissivity and detects under non-expansion state, and can be in order to guarantee effectively that the size of this apparatus is unanimous with the detection port of commercial equipment, be linked together with commercial equipment perfectly, have simple structure, design benefit, convenient operation, advantage with low costs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art configuration;
fig. 2 is a schematic view of the entire structure of embodiment 1.
Description of reference numerals: 1. an oxygen inlet pipe; 2. an oxygen delivery pipe; 3. a nitrogen inlet pipe; 4. a nitrogen gas delivery pipe; 5. a top cover; 6. fastening screws; 7. a gas permeable chamber; 8. a gas permeability testing device; 9. detecting a membrane material to be detected; 100. a commercial device; 200. an oxygen sealing cylinder; 201. a receiving cavity; 210. a barrel; 220. a fixed part; 230. an installation part; 240. an upper cover; 250. a first fixing nut; 260. a second fixing nut; 300. a conduit; 310. an air inlet pipe; 320. an air outlet pipe; 330. a first coupling nut; 400. the air guide supporting component; 410. an air intake support tube; 420. an air outlet supporting tube; 430. a support block; 440. a second coupling nut; 500. LDPE bottle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.
As shown in fig. 1, in the related art, the air permeability test apparatus 8 includes: an oxygen inlet pipe 1, an oxygen outlet pipe 2, a nitrogen inlet pipe 3, a nitrogen outlet pipe 4, a top cover 5 and a fastening screw 6. Wherein, upward notch is arranged on the top cover 5, downward notch is arranged on the air permeability testing equipment 8, and the membrane material to be tested is fixed at the notch on the air permeability testing equipment 8 and seals the notch, so that the air permeable chamber 7 is divided into two chambers.
Example 1:
the present embodiment relates to a test kit for the oxygen permeation amount of an LDPE bottle, which is used in a commercialized apparatus 100 using coulometry, as shown in fig. 2, and includes: an oxygen sealing cylinder 200, a guide tube 300, and an air guide support assembly 400.
Specifically, the oxygen sealing cylinder 200 is hermetically assembled with the commercialized equipment 100, a receiving cavity is provided between the oxygen sealing cylinder 200 and the commercialized equipment 100, and the LDPE bottle 500 to be tested is disposed in the receiving cavity. The conduit 300 is hermetically assembled with the oxygen sealing cylinder 200, and the conduit 300 is communicated with the accommodating cavity through the oxygen sealing cylinder 200. The conduit 300 is used for introducing or discharging oxygen into or from the accommodating cavity. The air guide supporting assembly 400 is hermetically assembled with the LDPE bottle 500 to be tested, and the air guide supporting assembly 400 passes through the LDPE bottle 500 to be tested and is communicated with the inner cavity of the LDPE bottle. The air guide support assembly 400 is used to support and secure the LDPE bottle 500 to be tested. The gas directing support assembly 400 is also used to direct or direct a test gas into the interior cavity of the LDPE bottle 500 to be tested. In this embodiment, the detecting gas is nitrogen, and in other embodiments, the detecting gas may be other gas that does not react with oxygen.
Further, as shown in fig. 2, the oxygen sealing cylinder 200 includes: a cylinder 210, a fixing part 220, a mounting part 230, and an upper cover 240. Specifically, a receiving cavity is formed between the cartridge 210 and the commercialized device 100. The fixing part 220 is disposed on the cylinder 210 near one side of the commercialization apparatus 100, and the fixing part 220 is used for fixing and assembling with the commercialization apparatus 100. The first fixing nut 250 is screw-assembled with the commercialized device 100 through the fixing part 220. The mounting part 230 is disposed on the cartridge body 210 at a side away from the commercialized device 100, and is integrally formed with the cartridge body 210. The upper cover 240 is disposed on the cylinder 210 at a side away from the commercialized device 100, and is fixedly assembled with the mounting part 230 by a second fixing nut 260.
Preferably, the fixing portion 220 protrudes from the outer side wall of the cylinder 210, and the fixing portion 220 is integrally formed with the cylinder 210. The cylinder 210, the fixing portion 220, and the mounting portion 230 are made of stainless steel. The mounting portion 230 also protrudes from the outer wall of the cylinder 210, and the mounting portion 230 has the same size as the fixing portion 220. After the upper cap 240 is fixed to the mounting portion 230, the upper cap 240 is used to press and fix the duct 300 to the bottom of the LDPE bottle 500. Wherein, LDPE bottle 500 is a plastic bottle made of low density polyethylene.
Further, as shown in fig. 2, the catheter 300 includes: an inlet pipe 310, an outlet pipe 320, and a first coupling nut 330. Specifically, the air inlet end of the air inlet pipe 310 is connected with the oxygen outlet hole of the commercial device 100 in a sealing manner through a snap spring. The air outlet end of the air inlet pipe 310 passes through the fixing portion 220 and is hermetically connected with the side of the cylinder 210 away from the commercialized equipment 100. The inlet end of the outlet tube 320 is sealingly connected to the side of the cartridge 210 remote from the commercial apparatus 100. The outlet end of the outlet pipe 320 passes through the fixing portion 220 and is hermetically connected with the inlet end of the commercialized equipment 100 by a snap spring. The first coupling nut 330 is sleeved on the air inlet pipe 310 and the air outlet pipe 320, and the first coupling nut 330 is fixedly connected with the oxygen sealing cylinder 200.
Preferably, the inlet pipe 310 and the outlet pipe 320 are symmetrically disposed, and both the inlet pipe 310 and the outlet pipe 320 are plastic pipes having no air permeability or poor air permeability. The air outlet end of the air inlet pipe 310 is connected to the top of the oxygen sealing cylinder 200 through the mounting part 230. The air inlet end of the air outlet pipe 320 passes through the mounting part 230 to be connected with the top of the oxygen sealing cylinder 200.
Further, as shown in fig. 2, the air guide supporting unit 400 includes: an inlet support pipe 410, an outlet branch pipe, a support block 430, and a second coupling nut 440. Specifically, the air inlet end of the air inlet support tube 410 is hermetically connected with the detection gas outlet end of the commercial device 100 through a snap spring. The air outlet end of the air inlet support pipe 410 is connected with the bottom of the LDPE bottle 500 to be tested. The air inlet end of the air outlet support pipe 420 is connected with the bottom of the LDPE bottle 500 to be tested. The gas outlet end of the gas outlet support tube 420 is hermetically connected with the gas inlet end of the commercial device 100 for detection by a clamp spring. The second coupling nut 440 is respectively sleeved on the air inlet support pipe 410 and the air outlet support pipe 420, and the second coupling nut 440 is fixedly coupled to the commercialized equipment 100. The air inlet support pipe 410 and the air outlet support pipe 420 are both connected with the bottom of the LDPE bottle 500 to be tested in a sealing way through the support block 430.
Preferably, the air outlet end of the air inlet support pipe 410 and the air inlet end of the air outlet support pipe 420 both extend through the bottom of the LDPE bottle 500 to be tested to one side of the top thereof, and the air outlet end of the air inlet support pipe 410 is closer to the top of the LDPE bottle 500 to be tested.
Preferably, as shown in fig. 2, the supporting block 430 is provided with a mounting recess at a side adjacent to the LDPE bottle 500 to be tested, and the mounting recess is adapted to the shape of the bottom of the LDPE bottle 500 to be tested. The inlet support tube 410 and the outlet support tube 420 are both stainless steel tubes.
The working principle of the present embodiment is roughly as follows: when testing the oxygen permeability of the LDPE bottle, firstly placing the LDPE bottle 500 to be detected on the mounting notch of the supporting block 430, inserting the air inlet supporting tube 410 and the air outlet supporting tube 420 from the bottom of the LDPE bottle 500 to be detected through the supporting block 430, and simultaneously ensuring that the insertion depth of the air inlet supporting tube 410 is greater than that of the air outlet supporting tube 420; then fixedly installing the oxygen sealing cylinder 200 at the installation position of the commercialized equipment 100, and connecting the air inlet pipe 310 with the oxygen outlet, the air outlet pipe 320 with the oxygen inlet, the air inlet support pipe 410 with the nitrogen outlet, and the air outlet support pipe 420 with the nitrogen inlet; finally, oxygen is introduced into the accommodating cavity 201 through the air inlet pipe 310, redundant oxygen is discharged out of the accommodating cavity 201 from the air outlet pipe 320, nitrogen is introduced into the LDPE bottle 500 through the air inlet supporting pipe 410, the gas in the LDPE bottle enters a detection position of the commercial equipment 100 through the air outlet supporting pipe 420, and the oxygen permeability is determined by detecting the content of oxygen in the gas discharged from the air outlet supporting pipe 420. The test tool has the advantages of simple structure, ingenious design, convenience in operation and low cost.
Example 2:
the present embodiment is different from embodiment 1 mainly in that in the present embodiment, no support block is provided in the conduit support assembly. The LDPE bottle to be detected is supported and fixed through two stainless steel pipes. The two stainless steel pipes are straight, are arranged side by side upwards and have the same length. During testing, the low-capacity LDPE bottle is directly transversely inserted into the stainless steel pipe, the joint is sealed by the sealant, and the test can be started.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A test kit for the oxygen transmission capacity of LDPE bottles for use in a commercial plant (100) employing coulometry, comprising:
an oxygen sealing cylinder (200), wherein the oxygen sealing cylinder (200) is hermetically assembled with the commercialized equipment (100), a containing cavity is arranged between the oxygen sealing cylinder (200) and the commercialized equipment (100), and the LDPE bottle (500) to be tested is arranged in the containing cavity;
the conduit (300) is in sealing assembly with the oxygen sealing cylinder (200), the conduit (300) penetrates through the oxygen sealing cylinder (200) to be communicated with the accommodating cavity, and the conduit (300) is used for introducing or leading out oxygen into or from the accommodating cavity;
and the air guide supporting assembly (400), the air guide supporting assembly (400) is in sealing assembly with the LDPE bottle (500) to be tested, the air guide supporting assembly (400) penetrates through the LDPE bottle (500) to be tested to be communicated with the inner cavity of the LDPE bottle, the air guide supporting assembly (400) is used for supporting and fixing the LDPE bottle (500) to be tested, and the air guide supporting assembly (400) is also used for leading in or leading out detection gas to the inner cavity of the LDPE bottle (500) to be tested.
2. The test kit for the oxygen transmission capacity of an LDPE bottle as claimed in claim 1, wherein the oxygen sealing cartridge comprises: a barrel (210), a housing cavity being formed between the barrel (210) and a commercialization apparatus (100);
the fixing part (220), the fixing part (220) is arranged on the side of the cylinder (210) close to the commercialized equipment (100), and the fixing part (220) is used for fixedly assembling with the commercialized equipment (100); and a first fixing nut (250), the first fixing nut (250) being screw-assembled with a commercialized device (100) through the fixing part (220).
3. The testing tool for the oxygen permeability of an LDPE bottle according to claim 2, wherein the fixing part (220) protrudes from the outer side wall of the barrel body (210), and the fixing part (220) is integrally formed with the barrel body (210).
4. The test kit for the oxygen permeability of an LDPE bottle as claimed in claim 2, wherein the oxygen sealing cartridge (200) further comprises a mounting portion (230) and an upper cover (240), the mounting portion (230) being provided on the cartridge body (210) on a side away from the commercialization apparatus (100) and being integrally formed with the cartridge body (210); the upper cover (240) is arranged on the side, far away from the commercialized equipment (100), of the cylinder body (210), and is fixedly assembled with the mounting part (230) through a second fixing nut (260).
5. Test kit for the oxygen transmission capacity of an LDPE bottle according to claim 3 or 4, characterized in that the duct (300) comprises: the air inlet end of the air inlet pipe (310) is connected with an oxygen outlet hole on the commercial equipment (100) in a sealing mode, and the air outlet end of the air inlet pipe (310) penetrates through the fixing part (220) to be connected with one side, far away from the commercial equipment (100), of the cylinder body (210) in a sealing mode;
the air inlet end of the air outlet pipe (320) is connected with one side, far away from the commercialized equipment (100), of the cylinder body (210) in a sealing mode, and the air outlet end of the air outlet pipe (320) penetrates through the fixing part (220) to be connected with the air inlet end of the commercialized equipment (100) in a sealing mode; and the number of the first and second groups,
the first connecting nut (330) is sleeved on the air inlet pipe (310) and the air outlet pipe (320), and the first connecting nut (330) is fixedly connected with the oxygen sealing cylinder (200).
6. The test kit for the oxygen transmission capacity of an LDPE bottle according to any of claims 1 to 4, wherein the gas guide support assembly (400) comprises:
the gas inlet supporting pipe (410), the gas inlet end of the gas inlet supporting pipe (410) is connected with the gas outlet end of the detection gas of the commercial equipment (100) in a sealing mode, and the gas outlet end of the gas inlet supporting pipe (410) is connected with the bottom of the LDPE bottle (500) to be tested;
the gas outlet supporting pipe (420), the gas inlet end of the gas outlet supporting pipe (420) is connected with the bottom of the LDPE bottle (500) to be tested, and the gas outlet end of the gas outlet supporting pipe (420) is hermetically connected with the gas inlet end of the detection gas of the commercialized equipment (100); and the number of the first and second groups,
the second connecting nut (440) is sleeved on the air inlet supporting pipe (410) and the air outlet supporting pipe (420) respectively, and the second connecting nut (440) is fixedly connected with commercial equipment (100).
7. The test kit for the oxygen permeability of the LDPE bottle according to claim 6, wherein the gas outlet end of the gas inlet support pipe (410) and the gas inlet end of the gas outlet support pipe (420) both extend through the bottom of the LDPE bottle (500) to be tested to one side of the top thereof, and the gas outlet end of the gas inlet support pipe (410) is closer to the top of the LDPE bottle (500) to be tested.
8. The test kit for testing the oxygen transmission capacity of an LDPE bottle according to claim 7, wherein the gas guide supporting assembly (400) further comprises a supporting block (430), and the gas inlet supporting tube (410) and the gas outlet supporting tube (420) are both connected with the bottom of the LDPE bottle (500) to be tested in a sealing way through the supporting block (430).
9. The test kit for the oxygen transmission capacity of an LDPE bottle according to claim 8, wherein the supporting block (430) is provided with a mounting notch at a side close to the LDPE bottle (500) to be tested, and the mounting notch is matched with the shape of the bottom of the LDPE bottle (500) to be tested.
10. The test kit for testing oxygen transmission capacity of LDPE bottle according to claim 6, wherein said conduit (300), said air intake support tube (410) and said air outlet support tube (420) are all impermeable to air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121812793.9U CN216284832U (en) | 2021-08-04 | 2021-08-04 | Testing tool for oxygen permeability of LDPE (Low-Density polyethylene) bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121812793.9U CN216284832U (en) | 2021-08-04 | 2021-08-04 | Testing tool for oxygen permeability of LDPE (Low-Density polyethylene) bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216284832U true CN216284832U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121812793.9U Active CN216284832U (en) | 2021-08-04 | 2021-08-04 | Testing tool for oxygen permeability of LDPE (Low-Density polyethylene) bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216284832U (en) |
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2021
- 2021-08-04 CN CN202121812793.9U patent/CN216284832U/en active Active
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