CN111982412B - Air leakage detection device for plastic bottle processing - Google Patents
Air leakage detection device for plastic bottle processing Download PDFInfo
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- CN111982412B CN111982412B CN202010750441.9A CN202010750441A CN111982412B CN 111982412 B CN111982412 B CN 111982412B CN 202010750441 A CN202010750441 A CN 202010750441A CN 111982412 B CN111982412 B CN 111982412B
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- cover plate
- lifting rod
- electric lifting
- fixed block
- tightening
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/10—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for containers, e.g. radiators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a gas leakage detection device for plastic bottle processing, which relates to the technical field of plastic bottle processing, wherein a barrel and a first electric lifting rod are arranged on a base, the barrel is provided with a deformation prevention device, the deformation prevention device consists of a cover plate, a tightening device, a water removing tank, a deformation prevention net and tightening wires, the cover plate is provided with a dehydration plate, an air pump and the tightening device, the water removing tank is provided with the deformation prevention net, the deformation prevention net is provided with the tightening wires, the tightening wires are connected with the barrel, the first electric lifting rod is provided with a connecting block, the connecting block is provided with the cover plate, when the tightening device clamps a plastic bottle, the air pump charges the plastic bottle, the plastic bottle stretches into the barrel through the electric lifting rod, and the barrel is put into water, so that the plastic bottle bubbles in the water to indicate the gas leakage of the plastic bottle.
Description
Technical Field
The invention relates to the technical field of plastic bottle processing, in particular to the technical field of plastic bottle processing.
Background
It is known that after the plastic bottle is processed, the quality of the plastic bottle needs to be detected, the tightness of the plastic bottle is a most important index to be detected, in the prior art, the tightness of the plastic bottle is mainly detected by using air pressure, firstly, air is filled into the plastic bottle to be pressurized, after a certain pressure is reached, the change of the pressure is detected, if the pressure becomes smaller, the plastic bottle is proved to have air leakage, the tightness is poor, defects exist, and the plastic bottle is a defective product, but the existing air leakage detection device only simply carries out one-time inflation detection on the inside of the plastic bottle, the detection is inaccurate, and when the plastic bottle is fixed, the bottle bottom or part of the bottle body is always shielded and extruded, the inaccuracy of the detection result is easily caused, and the detection work is influenced.
Disclosure of Invention
In order to overcome the defects in the background technology, the invention aims to provide an air leakage detection device for processing plastic bottles, the plastic bottles are clamped by a first fixing block and a second fixing block, the bottle mouths of the plastic bottles are placed in round grooves on a cover plate, an air pump inflates the plastic bottles, the plastic bottles extend into a cylinder body through an electric lifting rod, water is stored in the cylinder body, and the air leakage of the plastic bottles is indicated by bubbling of the plastic bottles in the water, so that the purpose of rapidly detecting the air leakage of the plastic bottles is achieved.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
an air leakage detection device for processing plastic bottles comprises a base, a cylinder body, an anti-deformation device,
The anti-deformation device comprises a cover plate, a dehydration plate, an air pump, a tightening device, a water removal tank, an anti-deformation net and tightening lines, wherein the dehydration plate, the air pump and the tightening device are arranged on the cover plate, the tightening device comprises a first displacement device, a first fixed block, a second displacement device and a second fixed block, the first displacement device is provided with the first fixed block, the second displacement device is provided with the second fixed block, the water removal tank is provided with the anti-deformation net, the anti-deformation net is provided with the tightening lines, the tightening lines are connected with the cylinder, and the first electric lifting rod is provided with the connecting block.
The middle position of the upper surface of the base is provided with a groove, a third round hole is formed in one side of the base, the size of the groove on the base is identical to the caliber of the cylinder, an inner thread is formed in the outer wall of the groove, a placing table is arranged in the middle of the groove, the cylinder is arranged on the groove, and a first electric lifting rod is arranged in the third round hole.
The cylinder body is of a cylindrical or prismatic tubular structure, the cylinder body is made of transparent materials, an external thread is arranged on the outer wall of one end of the cylinder body, the external thread on the cylinder body is matched with an internal thread in a base groove, a fixing ring is arranged on the inner wall of the other end of the cylinder body, a deformation preventing device is connected on the fixing ring,
the deformation preventing device comprises a cover plate, a dehydration plate, an air pump, a tightening device, a water removing tank, a deformation preventing net and tightening wires, wherein the dehydration plate, the air pump and the tightening device are arranged on the cover plate for dehydration, the tightening device comprises a first displacement device, a first fixed block, a second displacement device and a second fixed block, the first displacement device is provided with the first fixed block, the second displacement device is provided with the second fixed block, the water removing tank is provided with the deformation preventing net, the tightening wires are arranged on the deformation preventing net, and the tightening wires are connected with the cylinder body.
One end of the first electric lifting rod is fixed in a third round hole on the base, a connecting block is arranged on the other end of the first electric lifting rod, the connecting block is fixedly connected with the first electric lifting rod, a clamping pin is arranged at the central position of the other end of the connecting block, and a cover plate is arranged on the clamping pin
The cover plate is of a cylindrical or prismatic structure, a first round hole is formed in the cover plate, the first round hole is a through round hole, a round groove is formed in the lower surface of the cover plate, the center of the round groove is the first round hole, a sealing gasket is arranged on the inner wall of the round groove, an air pump is arranged on the upper surface of the cover plate, an air charging tube is arranged on the air pump, a knob switch is arranged on the air charging tube, the other end of the air charging tube penetrates through the first round hole in the cover plate to be fixed in the round groove in the lower surface of the cover plate, a dewatering plate is arranged on the side face of the cover plate, and a tightening device is arranged beside the round groove of the cover plate.
The tightening device is composed of a first displacement device, a first fixed block, a second displacement device and a second fixed block, wherein the first fixed block is arranged on the first displacement device, the second fixed block is arranged on the second displacement device, one end of the first displacement device is connected with the cover plate, and the other end of the first displacement device is connected with the first fixed block.
The first displacement device comprises a second electric lifting rod and a third electric lifting rod connected with the connecting plate, one end of the second electric lifting rod is connected with the cover plate, the other end of the second electric lifting rod is provided with the connecting plate, one side surface of the connecting plate is provided with the third electric lifting rod, the other end of the third electric lifting rod is connected with the first fixed block, and the other end of the first fixed block is provided with a buffer cushion in an arc shape.
The second displacement device has the same shape and structure as the first displacement device, and the second fixed block has the same shape and structure as the first fixed block.
The deformation-preventing net is a contractible net, the deformation-preventing net is provided with a tightening wire, the tightening wire on the deformation-preventing net is connected with a fixing ring fixed on the inner wall of the cylinder body, the deformation-preventing device belongs to a suspended state, the deformation-preventing device is provided with a water removing tank which is of a cylindrical or prismatic structure, water absorbing cotton is arranged in the water removing tank, the center of the water removing tank is provided with a second round hole, the second round hole penetrates the water removing tank, and the water removing tank is arranged in the cylinder body.
The invention provides a gas leakage detection device for plastic bottle processing, and aims to provide the gas leakage detection device for plastic bottle processing.
The invention has reasonable and practical structure, is simple and quick to operate, improves the accuracy of the detection result of workers, brings convenience to the detection work of the workers, and improves the working efficiency of the workers.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of a cover plate structure according to the present invention;
FIG. 3 is a schematic diagram of a first displacement device according to the present invention;
FIG. 4 is a schematic view of a base structure of the present invention;
FIG. 5 is a schematic view of a cylinder structure according to the present invention;
FIG. 6 is a schematic view of a connection block structure according to the present invention;
FIG. 7 is a schematic diagram of a second displacement device according to the present invention;
FIG. 8 is a schematic view of a tightening device according to the present invention;
FIG. 9 is a schematic view of a water removal tank according to the present invention
FIG. 10 is a schematic view of the deformation preventing net structure of the present invention
1. A base; 2. a cylinder; 3. a water removal tank; 4. a cover plate; 5. an air pump; 6. an inflation tube; 7. a knob switch; 8. a first round hole; 9. a first fixed block; 10. a tightening device; 11. a first electric lifting rod; 13. a connecting block; 14. the second electric lifting rod; 15. a first displacement device; 16. a connecting plate; 17. a third electric lifting rod; 18. a cushion pad; 19. a dewatering plate; 20. a groove; 21. a sealing gasket; 22. a circular groove; 23. tightening the wire; 24. a placement table; 25. an anti-deformation net; 26. an anti-deformation device; 27. a water-absorbing cotton; 28. a second round hole; 29. a third round hole; 30. a bayonet lock; 31. a fixing ring; 32. a second displacement device; 33. a second fixed block; 34. an internal thread; 35. and (5) external threads.
Detailed Description
The invention will be explained in more detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the invention.
Referring to fig. 1 to 10, an air leakage detection device for plastic bottle processing comprises a base 1, a barrel 2, an anti-deformation device 26, an air pump 5, a first electric lifting rod 11 and a connecting block 13, wherein the barrel 2 and the first electric lifting rod 11 are arranged on the base 1, the anti-deformation device 26 is arranged on the barrel 2, the anti-deformation device 26 is composed of a cover plate 4, a dehydration plate 19, the air pump 5, a tightening device 10 and a dehydration box 3, the anti-deformation net 25 and a tightening line 23, the dehydration plate 19, the air pump 5 and the tightening device 10 are arranged on the cover plate 4, the tightening device 10 is composed of a first displacement device 15, a first fixed block 9, a second displacement device 32 and a second fixed block 33, the first displacement device 15 is provided with the first fixed block 9, the second displacement device 32 is provided with the second fixed block 33, the anti-deformation net 25 is arranged on the dehydration box 3, the tightening line 23 is arranged on the anti-deformation net 25, the tightening line 23 is connected with the barrel 2, the first electric lifting rod 11 is provided with the connecting block 13, and the cover plate 4 is arranged on the connecting block 13.
The middle position of the upper surface of the base 1 is provided with a groove 20, one side of the base 1 provided with the groove 20 is provided with a third round hole 29, the size of the groove 20 on the base 1 is the same as the caliber size of the cylinder 2, the outer wall of the groove 20 is provided with an internal thread 34, the middle of the groove 20 is provided with a placing table 24, the groove 20 is provided with the cylinder 2, and the third round hole 29 is internally provided with a first electric lifting rod 11.
The barrel 2 is of a cylindrical or prismatic tubular structure, the barrel 2 is made of transparent materials, an external thread 35 is arranged on the outer wall of one end of the barrel 2, the external thread 35 on the barrel 2 is matched with an internal thread 34 in a groove 20 of the base 1, a fixing ring 31 is arranged on the inner wall of the other end of the barrel 2, and an anti-deformation device 26 is connected to the fixing ring 31.
The deformation preventing device 26 is composed of a cover plate 4, a dehydration plate 19, an air pump 5, a tightening device 10, a dehydration box 3, a deformation preventing net 25 and tightening wires 23, wherein the dehydration plate 19, the air pump 5 and the tightening device 10 are arranged on the cover plate 4, the tightening device 10 is composed of a first displacement device 15, a first fixed block 9, a second displacement device 32 and a second fixed block 33, the first fixed block 9 is arranged on the first displacement device 15, the second fixed block 33 is arranged on the second displacement device 32, the deformation preventing net 25 is arranged on the dehydration box 3, the tightening wires 23 are arranged on the deformation preventing net 25, and the tightening wires 23 are connected with the cylinder 2.
One end of the first electric lifting rod 11 is fixed in a third round hole 29 on the base 1, a connecting block 13 is arranged at the other end of the first electric lifting rod 11, the connecting block 13 is fixedly connected with the first electric lifting rod 11, a clamping pin 30 is arranged at the center of the other end of the connecting block 13, and a cover plate 4 is arranged on the clamping pin 30.
The cover plate 4 is of a cylindrical or prismatic structure, a first round hole 8 is formed in the cover plate 4, the first round hole 8 is a through round hole, a round groove 22 is formed in the lower surface of the cover plate 4, the first round hole 8 is formed in the center of the round groove 22, a sealing gasket 21 is arranged on the inner wall of the round groove 22, an air pump 5 is arranged on the upper surface of the cover plate 4, an air inflation tube 6 is arranged on the air pump 5, a knob switch 7 is arranged on the air inflation tube 6, the other end of the air inflation tube 6 penetrates through the first round hole 8 in the cover plate 4 and is fixed in the round groove 22 in the lower surface of the cover plate 4, a dewatering plate 19 is arranged on the side face of the cover plate 4, and a tightening device 10 is arranged beside the round groove 22 in the cover plate 4.
The tightening device 10 is composed of a first displacement device 15, a first fixed block 9, a second displacement device 32 and a second fixed block 33, the first displacement device 15 is provided with the first fixed block 9, the second displacement device 32 is provided with the second fixed block 33, one end of the first displacement device 15 is connected with the cover plate 4, and the other end of the first displacement device 15 is connected with the first fixed block 9.
The first displacement device 15 is composed of a second electric lifting rod 14 and a third electric lifting rod 17 connected with a connecting plate 16, one end of the second electric lifting rod 14 is connected with the cover plate 4, the other end of the second electric lifting rod 14 is provided with the connecting plate 16, one side surface of the connecting plate 16 is provided with the third electric lifting rod 17, the other end of the third electric lifting rod 17 is connected with the first fixed block 9, and a buffer cushion 18 is arranged on the arc-shaped other end of the first fixed block 9.
The second displacement device 32 has the same shape and structure as the first displacement device 15, and the second fixed block 33 has the same shape and structure as the first fixed block 9.
The deformation preventing net 25 is a contractible net, the deformation preventing net 25 is provided with a tightening wire 23, the tightening wire 23 on the deformation preventing net 25 is connected with a fixing ring 31 fixed on the inner wall of the cylinder 2, the tightening wire 23 controls tightness of the deformation preventing net 25, the deformation preventing net 25 is in a suspended state, the deformation preventing net 25 is provided with a water removing tank 3, the water removing tank 3 is of a cylindrical or prismatic structure, a water absorbing cotton 27 is arranged in the water removing tank 3, the center of the water removing tank 3 is provided with a second round hole 28, the second round hole 28 penetrates through the water removing tank 3, and the water removing tank 3 is arranged in the cylinder 2.
In the embodiment 1, referring to fig. 1 to 10, in the air leakage detection device for plastic bottle processing according to the present invention, a first displacement device 15 and a second displacement device 32 on a tightening device 10 control a first fixing block 9 and a second fixing block 33 to clamp a plastic bottle, a plastic bottle opening is placed in a circular groove 22 on a cover plate 4, a sealing gasket 21 in the circular groove 22 of the plastic bottle opening is sealed, an air pump 5 inflates the plastic bottle, the plastic bottle extends into a cylinder 2 through a first electric lifting rod 11, the cylinder 2 stores water, and bubbling in the water indicates that the plastic bottle leaks, so as to achieve the purpose of rapidly detecting the air leakage of the plastic bottle.
In addition, when a certain amount of water is absorbed in the absorbent cotton 27 in the dewatering box 3, the dewatering plate 19 is aligned downwards to the dewatering box 3 by rotating the cover plate 4, the dewatering plate 19 moves downwards by utilizing the first electric lifting rod 11, the dewatering plate 19 extrudes the water in the absorbent cotton 27 in the dewatering box 3, and the extruded water flows into the cylinder 2 below.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. An air leakage detection device for plastic bottle processing is characterized in that: comprises a base (1), a cylinder (2), a deformation preventing device (26), an air pump (5), a first electric lifting rod (11) and a connecting block (13), wherein the cylinder (2) and the first electric lifting rod (11) are arranged on the base (1), the deformation preventing device (26) is arranged on the cylinder (2), the deformation preventing device (26) consists of a cover plate (4), a dewatering plate (19), the air pump (5), a tightening device (10), a dewatering box (3), a deformation preventing net (25) and tightening wires (23), the dewatering plate (19), the air pump (5) and the tightening device (10) are arranged on the cover plate (4), the tightening device (10) consists of a first displacement device (15), a first fixed block (9), a second displacement device (32) and a second fixed block (11), the first fixed block (9) is arranged on the first displacement device (15), the second fixed block (33) is arranged on the second displacement device (32), the dewatering box (3) is provided with the deformation preventing net (25), the tightening wires (23) are arranged on the deformation preventing net (25), the tightening wires (23) are connected with the first electric lifting rod (11), a cover plate (4) is arranged on the connecting block (13);
the tightening device (10) is composed of a first displacement device (15), a first fixed block (9), a second displacement device (32) and a second fixed block (33), wherein the first fixed block (9) is arranged on the first displacement device (15), the second fixed block (33) is arranged on the second displacement device (32), one end of the first displacement device (15) is connected with the cover plate (4), and the other end of the first displacement device (15) is connected with the first fixed block (9);
the first displacement device (15) is composed of a second electric lifting rod (14) and a third electric lifting rod (17) of a connecting plate (16), one end of the second electric lifting rod (14) is connected with the cover plate (4), the other end of the second electric lifting rod (14) is provided with the connecting plate (16), one side surface of the connecting plate (16) is provided with the third electric lifting rod (17), the other end of the third electric lifting rod (17) is connected with the first fixed block (9), and the other end of the first fixed block (9) is provided with a buffer cushion (18) in an arc shape;
the second displacement device (32) has the same shape and structure as the first displacement device (15), and the second fixed block (33) has the same shape and structure as the first fixed block (9);
the anti-deformation net (25) is a contractible net, a tightening wire (23) is arranged on the anti-deformation net (25), the tightening wire (23) on the anti-deformation net (25) is connected with a fixed ring (31) fixed on the inner wall of the cylinder body (2), the tightening wire (23) controls tightness of the anti-deformation net (25), the anti-deformation net (25) is in a suspended state, a water removing tank (3) is arranged on the anti-deformation net (25), the water removing tank (3) is of a cylindrical or prismatic structure, a water absorbing cotton (27) is arranged in the water removing tank (3), a second round hole (28) is formed in the center of the water removing tank (3), the second round hole (28) penetrates through the water removing tank (3), and the water removing tank (3) is arranged in the cylinder body (2);
the middle position of the upper surface of the base (1) is provided with a groove (20), one side of the base (1) provided with the groove (20) is provided with a third round hole (29), the size of the groove (20) on the base (1) is the same as the caliber size of the cylinder (2), the outer wall of the groove (20) is provided with an internal thread (34), the middle of the groove (20) is provided with a placing table (24), the groove (20) is provided with the cylinder (2), and a first electric lifting rod (11) is arranged in the third round hole (29);
the cylinder body (2) is of a cylindrical or prismatic tubular structure, the cylinder body (2) is made of transparent materials, an external thread (35) is arranged on the outer wall of one end of the cylinder body (2), the external thread (35) on the cylinder body (2) is matched with an internal thread (34) in a groove (20) of the base (1), a fixed ring (31) is arranged on the inner wall of the other end of the cylinder body (2), and an anti-deformation device (26) is connected on the fixed ring (31);
one end of the first electric lifting rod (11) is fixed in a third round hole (29) on the base (1), a connecting block (13) is arranged at the other end of the first electric lifting rod (11), the connecting block (13) is fixedly connected with the first electric lifting rod (11), a clamping pin (30) is arranged at the center of the other end of the connecting block (13), and a cover plate (4) is arranged on the clamping pin (30);
the cover plate (4) is of a cylindrical or prismatic structure, a first round hole (8) is formed in the cover plate (4), the first round hole (8) is a through round hole, a round groove (22) is formed in the lower surface of the cover plate (4), the first round hole (8) is arranged in the center of the round groove (22), a sealing gasket (21) is arranged on the inner wall of the round groove (22), an air pump (5) is arranged on the upper surface of the cover plate (4), an air inflation tube (6) is arranged on the air pump (5), a knob switch (7) is arranged on the air inflation tube (6), the other end of the air inflation tube (6) penetrates through the first round hole (8) in the cover plate (4) and is fixed in the round groove (22) in the lower surface of the cover plate (4), a dewatering plate (19) is arranged on the side surface of the cover plate (4), and a tightening device (10) is arranged beside the round groove (22) in the cover plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010750441.9A CN111982412B (en) | 2020-07-30 | 2020-07-30 | Air leakage detection device for plastic bottle processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010750441.9A CN111982412B (en) | 2020-07-30 | 2020-07-30 | Air leakage detection device for plastic bottle processing |
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| Publication Number | Publication Date |
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| CN111982412A CN111982412A (en) | 2020-11-24 |
| CN111982412B true CN111982412B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010750441.9A Active CN111982412B (en) | 2020-07-30 | 2020-07-30 | Air leakage detection device for plastic bottle processing |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5146778A (en) * | 1990-12-26 | 1992-09-15 | Hsu Charles J | Oil and/or water detection apparatus |
| WO2020147435A1 (en) * | 2019-01-16 | 2020-07-23 | 山东科技大学 | Gas sealing performance detection device and method for using same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208606961U (en) * | 2018-08-31 | 2019-03-15 | 四川新升塑胶实业有限公司 | A kind of detection device of plastic bottle |
| CN208984293U (en) * | 2018-11-28 | 2019-06-14 | 无锡凯迭力输送机械有限公司 | A kind of hydrostatic test outside measurement tower that can dry gas cylinder |
| CN210071252U (en) * | 2019-07-08 | 2020-02-14 | 苏州市金桥包装容器有限公司 | Air tightness leakage-proof detection device for metal barrel manufacturing |
| CN210442048U (en) * | 2019-08-08 | 2020-05-01 | 四川潽鑫科技有限公司 | Filter equipment is used in plastics tubular product production |
| CN110375932B (en) * | 2019-08-09 | 2020-06-12 | 贵州万益包装材料有限公司 | Quick detection machine of polymer plastic bottle gas leakage |
-
2020
- 2020-07-30 CN CN202010750441.9A patent/CN111982412B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5146778A (en) * | 1990-12-26 | 1992-09-15 | Hsu Charles J | Oil and/or water detection apparatus |
| WO2020147435A1 (en) * | 2019-01-16 | 2020-07-23 | 山东科技大学 | Gas sealing performance detection device and method for using same |
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| CN111982412A (en) | 2020-11-24 |
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