CN110987752A - Detection device for detecting column type membrane - Google Patents
Detection device for detecting column type membrane Download PDFInfo
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- CN110987752A CN110987752A CN201911140767.3A CN201911140767A CN110987752A CN 110987752 A CN110987752 A CN 110987752A CN 201911140767 A CN201911140767 A CN 201911140767A CN 110987752 A CN110987752 A CN 110987752A
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- column type
- type membrane
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- rotating
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- 239000012528 membrane Substances 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/086—Investigating permeability, pore-volume, or surface area of porous materials of films, membranes or pellicules
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a detection device for detecting a column type membrane, which relates to the field of column type membrane detection devices and comprises a detection pool, wherein a rectangular frame is arranged on the detection pool, a movable frame is arranged above the rectangular frame in a sliding manner, two rotating wheels are respectively arranged at the lower ends of two sides of the movable frame, a driving motor is arranged on the movable frame, a rotating motor is arranged at the upper end of the movable frame close to the front side, a driving wheel is arranged at the output end of the rotating motor, a driven wheel is arranged in the same plane on one side of the driving wheel on the movable frame, a rotating roller is arranged at the front end of the driven wheel, a column type membrane rope is arranged on the rotating roller, the air permeability of the column type membrane filter core is detected through the arrangement of the detection pool, the rotating roller is driven to rotate through the arrangement of the rotating motor, the extension and the shortening of the column type membrane rope are, the whole detection device is convenient to operate, can accurately and efficiently detect the column type membrane, and is high in practicability.
Description
Technical Field
The invention relates to the field of column type membrane detection devices, in particular to a detection device for detecting a column type membrane.
Background
KDF and active carbon are generally arranged in a filter element of the water purifier, and the filter element is used for cleaning polluted water to a state required by production and life, namely, the water reaches certain cleanliness. Removing solid particles in water, killing bacteria, and filtering out harmful chemical components.
In the manufacturing process of the water purification filter element, the internal filter element needs to be detected, and the common method is to block one end of the filter element and ventilate the other end of the filter element, and give a certain air pressure to see whether bubbles exist or not so as to judge whether the filter element is qualified or not. However, some filter elements are often heavy, and are simply lifted by hands and placed in a water pool, or are tied by a rope and placed in the water pool, so that whether bubbles exist or not is detected, the operation is inconvenient, and the accuracy of the whole detection result is influenced. The invention provides a detection device for detecting a column type membrane, which solves the defects.
Disclosure of Invention
The present invention is directed to a detection device for detecting a column membrane, so as to solve the above technical problems.
In order to solve the technical problems, the invention adopts the following technical scheme: a detection device for detecting column type membrane, includes the detection pond, its characterized in that:
the detection pool is of a cuboid structure with an unsealed upper end, support columns are vertically arranged at four corners of the upper end of the detection pool, a rectangular frame is horizontally arranged at the upper ends of the four support columns, the rectangular frame comprises two long support rods and short support rods, a sliding track is arranged at the upper end of each short support rod, a moving frame is arranged above the rectangular frame in a sliding manner, two rotating wheels are respectively arranged at the lower ends of two sides of the moving frame and are in sliding fit with the sliding tracks, rotating rods are fixedly connected between the corresponding rotating wheels at the left side and the right side, a driving motor is arranged on the moving frame, the output end of the driving motor is in transmission connection with the rotating rods, a rotating motor is arranged at the upper end of the moving frame close to the front side, a driving wheel is arranged at the output end of the rotating motor, a driven wheel is arranged in the same plane, the front end of the driven wheel is provided with a rotating roller, and the rotating roller is provided with a column type film rope. Through the setting that detects the pond, carry out the detection of gas permeability to column type membrane filter core, through rectangular frame's setting, can support fixedly moving frame, extend to the outside that detects the pond simultaneously, make column type membrane filter core be convenient for from outside the detection pond remove to the detection pond inside, drive the runner through driving motor and rotate, with the slip track cooperation, accomplish whole moving frame's removal, through the setting that rotates the motor, drive the live-rollers rotation, accomplish column type membrane rope extension and shorten.
Preferably, the length of the supporting short rod is half of the width of the detection pool.
Preferably, the rotating roller is provided with a limiting groove of the column type membrane rope.
Preferably, the column type membrane rope includes the main rope, and the upper end fixed mounting of main rope is in the spacing groove of live-rollers, and the lower extreme of main rope is provided with the fixed rope of first fixed rope and second, is provided with fixed cover on the first fixed rope, is provided with sealed the pad on the inner wall of fixed cover, the lower extreme of the fixed rope of second is provided with sealed lid, and sealed covering runs through and is provided with the breather pipe. The fixing and sealing at the two ends of the filter element are finished by arranging the fixing sleeve and the sealing gasket, so that the filter element is convenient to install and disassemble.
Preferably, a sealing ring is arranged on the inner side wall of the sealing cover.
Preferably, the retainer plate and the sealing cover are made of rubber materials, and the outer sides of the retainer plate and the sealing cover are provided with locking buckles.
Preferably, the locking is detained including the rubber belt, and the one end of rubber belt is provided with fixed the knot, and fixed the knot is gone up and is run through and be provided with the belt perforation, and the belt perforation is unanimous with the rubber belt direction, and the upper end of fixed knot is run through the belt perforation and is provided with the screw, and movable mounting has fixing bolt in the screw. The setting of locking knot can be tightly fixed cover and sealed the pad on the filter core.
Preferably, the fixing buckle and the fixing bolt are made of stainless steel.
The invention has the beneficial effects that:
according to the invention, the air permeability of the column type membrane filter element is detected through the arrangement of the detection pool, the movable frame can be supported and fixed through the arrangement of the rectangular frame and can extend to the outer side of the detection pool, so that the column type membrane filter element can be conveniently moved from the outside of the detection pool to the inside of the detection pool, the rotating wheel is driven to rotate through the driving motor and is matched with the sliding track to complete the movement of the whole movable frame, the rotating roller is driven to rotate through the arrangement of the rotating motor to complete the extension and the shortening of the column type membrane rope, the fixing sleeve and the sealing gasket are arranged to complete the fixing and the sealing of two ends of the filter element, the installation and the disassembly are convenient, the arrangement of the locking buckle can tightly fix the fixing sleeve and the sealing gasket on the filter element, the whole invention has the advantages of simple structure.
Drawings
FIG. 1 is a schematic perspective view of a detection device for detecting a column membrane according to the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the structure of the column-type membrane string of the present invention;
FIG. 5 is a schematic perspective view of the locking buckle of the present invention;
reference numerals: 1-a detection cell; 2-a support column; 3-a rectangular frame; 301-supporting a long pole; 302-supporting short bars; 4-a sliding track; 5-moving the frame; 6-rotating wheel; 7-rotating the rod; 8-driving a motor; 9-rotating the motor; 10-a driving wheel; 11-a driven wheel; 12-a conveyor belt; 13-a turning roll; 14-cylindrical membrane cords; 1401-a main rope; 1402-a first securing cord; 1403-a second securing line; 15-a stationary ring; 16-a seal gasket; 17-a sealing cover; 18-a ventilation pipe; 19-a locking buckle; 1901-rubber belt; 1902-a retaining buckle; 1903-belt perforation; 1904-screw hole; 1905-fixing the bolt.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-3, a detection device for detecting a column type membrane, comprising a detection pool 1, wherein the detection pool 1 is a cuboid structure with an unsealed upper end, four corners of the upper end of the detection pool 1 are vertically provided with support columns 2, the upper ends of the four support columns 2 are horizontally provided with a rectangular frame 3, the rectangular frame 3 comprises two support long rods 301 and support short rods 302, the upper end of the support short rods 302 is provided with a sliding track 4, a movable frame 5 is slidably arranged above the rectangular frame 3, two lower ends of two sides of the movable frame 5 are respectively provided with two rotating wheels 6, the rotating wheels 6 are in sliding fit with the sliding track 4, a rotating rod 7 is fixedly connected between the rotating wheels 6 corresponding to the left side and the right side, the movable frame 5 is provided with a driving motor 8, the output end of the driving motor 8 is in transmission connection with the rotating rod 7, the upper end of, the output end of the rotating motor 9 is provided with a driving wheel 10, a driven wheel 11 is arranged in the same plane on one side of the driving wheel 10 on the moving frame 5, the driving wheel 10 is in transmission connection with the driven wheel 11 through a conveying belt 12, the front end of the driven wheel 11 is provided with a rotating roller 13, and the rotating roller 13 is provided with a column type membrane rope 14.
The working principle is as follows: firstly, the driving motor 8 is controlled to be started, the rotating rod 7 is driven to rotate, the rotating rod 7 drives the rotating wheel 6 to move towards the front of the whole device until the moving frame 5 moves to the foremost end of the sliding track 4, at the moment, the rotating motor 9 is started to rotate clockwise, the rotating motor 9 rotates to drive the driving wheel 10 to rotate, the driving wheel 10 drives the driven wheel 11 to rotate through the conveying belt 12, the driven wheel 11 rotates to drive the rotating roller 13 to rotate clockwise, the column type membrane rope 14 on the rotating roller 13 can be put down until the column type membrane filter core to be detected reaches the ground, then the column type membrane filter core to be detected is fixed through the column type membrane rope 14, then the rotating motor 9 is controlled to rotate anticlockwise, the rotating roller 13 can also rotate anticlockwise, the column type membrane rope 14 can be gradually wound on the rotating roller 13, when the column type membrane filter core to be detected, and starting the driving motor 8, moving the moving frame 5 towards the rear part of the rectangular frame 3 until the moving frame coincides with the rear edge of the rectangular frame 3, stopping the work of the driving motor 8 at the moment, starting the rotating motor 9, enabling the rotating motor 9 to start to rotate clockwise, and enabling the column type membrane filter core 14 on the rotating roller 13 to be placed longer and longer until the column type membrane filter core to be detected at the lower end of the column type membrane filter core 14 completely enters the detection pool 1.
Example 2
As shown in fig. 1-5, a detection device for detecting a column type membrane, comprising a detection pool 1, wherein the detection pool 1 is a cuboid structure with an unsealed upper end, four corners of the upper end of the detection pool 1 are vertically provided with support columns 2, the upper ends of the four support columns 2 are horizontally provided with a rectangular frame 3, the rectangular frame 3 comprises two support long rods 301 and support short rods 302, the upper end of the support short rods 302 is provided with a sliding track 4, a movable frame 5 is slidably arranged above the rectangular frame 3, two lower ends of two sides of the movable frame 5 are respectively provided with two rotating wheels 6, the rotating wheels 6 are in sliding fit with the sliding track 4, a rotating rod 7 is fixedly connected between the rotating wheels 6 corresponding to the left side and the right side, the movable frame 5 is provided with a driving motor 8, the output end of the driving motor 8 is in transmission connection with the rotating rod 7, the upper end of, the output end of the rotating motor 9 is provided with a driving wheel 10, a driven wheel 11 is arranged in the same plane on one side of the driving wheel 10 on the moving frame 5, the driving wheel 10 is in transmission connection with the driven wheel 11 through a conveying belt 12, the front end of the driven wheel 11 is provided with a rotating roller 13, and the rotating roller 13 is provided with a column type membrane rope 14.
The column type membrane rope 14 comprises a main rope 1401, the upper end of the main rope 1401 is fixedly installed in a limiting groove of the rotating roller 13, a first fixing rope 1402 and a second fixing rope 1403 are arranged at the lower end of the main rope 1401, a fixing sleeve 15 is arranged on the first fixing rope 1402, a sealing gasket 16 is arranged on the inner wall of the fixing sleeve 15, a sealing cover 17 is arranged at the lower end of the second fixing rope 1403, a vent pipe 18 penetrates through the sealing cover 17, and a locking buckle 19 is arranged on the outer sides of the fixing sleeve 15 and the sealing cover 16.
The working principle is as follows: the pot head with column type membrane filter core is in fixed cover 15, the other end is fixed on sealed lid 17, rubber belt 1901 passes belt perforation 1903, a circle in the wall, the cover is in fixed cover 15 and sealed lid 17 outside, make locking buckle 19 with fixed cover 15 and sealed lid 17 and column type membrane filter core close coupling, then screw up fixing bolt 1905 in screw 1904, accomplish the fixed of rubber belt 1901, when putting into detection pond 1 inside with column type membrane filter core, ventilate breather pipe 18, and give certain atmospheric pressure, see whether there is the bubble, judge whether qualified.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A detection device for detecting a column membrane, comprising a detection cell (1), characterized in that:
the detection tank (1) is of a cuboid structure with an unsealed upper end, four corners at the upper end of the detection tank (1) are vertically provided with support columns (2), the upper ends of the four support columns (2) are horizontally provided with a rectangular frame (3), the rectangular frame (3) comprises two support long rods (301) and support short rods (302), the upper ends of the support short rods (302) are provided with sliding tracks (4), a movable frame (5) is arranged above the rectangular frame (3) in a sliding manner, the lower ends of the two sides of the movable frame (5) are respectively provided with two rotating wheels (6), the rotating wheels (6) are in sliding fit with the sliding tracks (4), rotating rods (7) are fixedly connected between the rotating wheels (6) corresponding to the left side and the right side, the movable frame (5) is provided with a driving motor (8), and the output end of the driving motor (8) is in, the upper end of the moving frame (5) is provided with a rotating motor (9) close to the front side, the output end of the rotating motor (9) is provided with a driving wheel (10), a driven wheel (11) is arranged on the moving frame (5) and located in the same plane on one side of the driving wheel (10), the driving wheel (10) is in transmission connection with the driven wheel (11) through a conveying belt (12), a rotating roller (13) is arranged at the front end of the driven wheel (11), and a column type membrane rope (14) is arranged on the rotating roller (13).
2. The detecting device for detecting the column type membrane as claimed in claim 1, wherein: the length of the supporting short rod (302) is half of the width of the detection pool (1).
3. The detecting device for detecting the column type membrane as claimed in claim 1, wherein: and a limiting groove of a column type membrane rope (14) is arranged on the rotating roller (13).
4. The detecting device for detecting the column type membrane as claimed in claim 1, wherein: the column type membrane rope (14) comprises a main rope (1401), the upper end of the main rope (1401) is fixedly installed in a limiting groove of a rotating roller (13), a first fixing rope (1402) and a second fixing rope (1403) are arranged at the lower end of the main rope (1401), a fixing sleeve (15) is arranged on the first fixing rope (1402), a sealing gasket (16) is arranged on the inner wall of the fixing sleeve (15), a sealing cover (17) is arranged at the lower end of the second fixing rope (1403), a vent pipe (18) penetrates through the sealing cover (17), and a locking buckle (19) is arranged on the outer sides of the fixing sleeve (15) and the sealing cover (17).
5. The detecting unit for detecting the column type membrane as claimed in claim 4, wherein: and a sealing ring is arranged on the inner side wall of the sealing cover (1406).
6. The detecting unit for detecting the column type membrane as claimed in claim 4, wherein: the fixed sleeve (15) and the sealing cover (16) are made of rubber.
7. The detecting unit for detecting the column type membrane as claimed in claim 6, wherein: locking is detained (19) and is included rubber belt (1901), and the one end of rubber belt (1901) is provided with fixed knot (1902), and fixed knot (1902) is gone up to run through and is provided with belt perforation (1903), and belt perforation (1903) are unanimous with rubber belt (1901) direction, and the upper end of fixed knot (1902) is run through belt perforation (1903) and is provided with screw (1904), and movable mounting has fixing bolt (1905) in screw (1904).
8. The detecting device for detecting the column type membrane as claimed in claim 7, wherein: the fixing buckle (1902) and the fixing bolt (1905) are both made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140767.3A CN110987752A (en) | 2019-11-20 | 2019-11-20 | Detection device for detecting column type membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140767.3A CN110987752A (en) | 2019-11-20 | 2019-11-20 | Detection device for detecting column type membrane |
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| Publication Number | Publication Date |
|---|---|
| CN110987752A true CN110987752A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911140767.3A Pending CN110987752A (en) | 2019-11-20 | 2019-11-20 | Detection device for detecting column type membrane |
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| CN (1) | CN110987752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297112A (en) * | 2023-05-25 | 2023-06-23 | 上海联风气体有限公司 | Gas permeability detection equipment and detection method for polymer film |
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| CN206700192U (en) * | 2017-01-04 | 2017-12-05 | 象山县第一人民医院 | A kind of abdominal operation blood vessel ligation ring |
| CN107939484A (en) * | 2017-09-20 | 2018-04-20 | 朱智慧 | A kind of waste gas absorption processing unit |
| CN108036900A (en) * | 2017-12-27 | 2018-05-15 | 安徽江航爱唯科环境科技有限公司 | A kind of air-tightness detection method |
| CN208476477U (en) * | 2018-05-18 | 2019-02-05 | 台州柯诗达净水设备股份有限公司 | Filter element of water purifier air-leakage test rapid determination device |
| CN109655207A (en) * | 2017-10-10 | 2019-04-19 | 曼胡默尔滤清器（上海）有限公司 | It is a kind of for testing the experimental rig of filter element tightness |
-
2019
- 2019-11-20 CN CN201911140767.3A patent/CN110987752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201653655U (en) * | 2010-04-15 | 2010-11-24 | 深圳市诚德来实业有限公司 | Ultra filter core conveyer and air leakage detection system |
| CN203333167U (en) * | 2013-05-31 | 2013-12-11 | 成都世唯科技有限公司 | Drilling racking platform manipulator |
| CN206700192U (en) * | 2017-01-04 | 2017-12-05 | 象山县第一人民医院 | A kind of abdominal operation blood vessel ligation ring |
| CN107939484A (en) * | 2017-09-20 | 2018-04-20 | 朱智慧 | A kind of waste gas absorption processing unit |
| CN109655207A (en) * | 2017-10-10 | 2019-04-19 | 曼胡默尔滤清器（上海）有限公司 | It is a kind of for testing the experimental rig of filter element tightness |
| CN108036900A (en) * | 2017-12-27 | 2018-05-15 | 安徽江航爱唯科环境科技有限公司 | A kind of air-tightness detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297112A (en) * | 2023-05-25 | 2023-06-23 | 上海联风气体有限公司 | Gas permeability detection equipment and detection method for polymer film |
| CN116297112B (en) * | 2023-05-25 | 2023-09-15 | 上海联风气体有限公司 | Gas permeability detection equipment and detection method for polymer film |
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Application publication date: 20200410 |