CN109990860B - Pneumatic capillary clamping device - Google Patents
Pneumatic capillary clamping device Download PDFInfo
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- CN109990860B CN109990860B CN201910311199.2A CN201910311199A CN109990860B CN 109990860 B CN109990860 B CN 109990860B CN 201910311199 A CN201910311199 A CN 201910311199A CN 109990860 B CN109990860 B CN 109990860B
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- cylinder
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- piston
- rubber ring
- cylinder barrel
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- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 11
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Actuator (AREA)
Abstract
The invention discloses a pneumatic capillary clamping device, which comprises a cylinder barrel, a piston, a cylinder cover, a spring, a pair of push plates and a rubber ring, wherein the cylinder barrel is provided with a piston; one end of the cylinder barrel is matched and locked with the cylinder cover, the other end of the cylinder barrel is provided with an air inlet communicated with a compressed air source, the air inlet end inside the cylinder barrel is provided with an air cylinder communicated with the air inlet, a piston is arranged in the air cylinder, the top of the piston is provided with a limiting plate, the limiting plate is connected with the bottom of the cylinder barrel through a spring, and the spring is in a stretching state; the push plate comprises an upper push plate and a lower push plate, a rubber ring is arranged between the upper push plate and the lower push plate, an inward taper is arranged on the end surfaces of the upper push plate and the lower push plate matched with the rubber ring, and a capillary tube penetrates through the cylinder cover, the upper push plate, the rubber ring, the lower push plate, the limiting plate and stretches into the piston; the inward taper of the upper push plate and the lower push plate is matched with the rubber ring in an extrusion way, and the capillary tube is locked. The invention realizes two processes of automatic locking of the capillary tube by connecting the air source and automatic release of the capillary tube by disconnecting the air, improves the automation degree of the test and simplifies the test process.
Description
Technical Field
The invention belongs to the technical field of flow testing, relates to equipment for testing capillary flow, and particularly relates to a pneumatic capillary clamping device.
Background
In the prior art, the testing procedure of the capillary flow testing device is as follows: inserting a capillary tube; installing a locking device; switching on the test gas; testing; disconnecting the test gas; disassembling the locking device; the capillary tube is pulled out. Each capillary needs to be assembled and disassembled with a locking device, and the assembly and the disassembly are complicated and the efficiency is low. Therefore, the manual locking is changed into automatic locking, and the method has important significance for improving the degree of automation and simplifying the testing process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the pneumatic clamping device for the capillary flow testing equipment, which has the advantages of simple structure and high operation efficiency. The capillary tube can be automatically locked by only switching on the air source, and can be released when switching off the air source; the two manual procedures of time-consuming and complicated installation and disassembly of the locking device can be omitted, the testing process is simplified, and the method has important significance in improving the testing efficiency and the automation degree.
In order to solve the technical problems, the invention adopts the following technical scheme:
the pneumatic capillary clamping device comprises a cylinder barrel, a piston, a cylinder cover, a spring, a pair of push plates and a rubber ring;
the cylinder barrel is of a cylindrical structure, one end of the cylinder barrel is matched and locked with the cylinder cover, the other end of the cylinder barrel is provided with an air inlet communicated with a compressed air source, an air cylinder communicated with the air inlet is arranged at the air inlet end inside the cylinder barrel, the bottom of the air cylinder and the bottom of the cylinder barrel are of an integrated structure, and a through hole is formed in the side wall of the air cylinder;
the piston is arranged in the cylinder, the outer diameter of the piston is in clearance fit with the inner diameter of the cylinder, a through hole is formed in the side wall of the piston, a limiting plate is arranged at the top of the piston, the limiting plate and the piston are integrally designed, the limiting plate is connected with the bottom of the cylinder barrel through a spring, and the spring is in a stretching state;
the push plate comprises an upper push plate and a lower push plate, the rubber ring is arranged between the upper push plate and the lower push plate, the end surfaces of the upper push plate and the lower push plate matched with the rubber ring are provided with inward taper, the lower push plate is matched with the limiting plate, and the upper push plate is positioned at the top of the cylinder barrel; the capillary tube penetrates through the cylinder cover, the upper pushing plate, the rubber ring, the lower pushing plate and the limiting plate and stretches into the piston; the inward taper of the upper push plate and the lower push plate is matched with the rubber ring in an extrusion way, and the capillary tube is locked.
Furthermore, the whole push plate is cylindrical, a through hole with the aperture larger than the outer diameter of the capillary tube is designed in the center of the cylinder, and the outer diameter of the push plate is in clearance fit with the inner diameter of the cylinder barrel.
Further, one end of the lower push plate matched with the limiting plate is a plane, and one end of the lower push plate matched with the rubber ring is provided with an inward taper.
Further, one end of the upper push plate matched with the top of the cylinder barrel is a plane, and one end of the upper push plate matched with the rubber ring is provided with an inward taper.
Furthermore, the whole rubber ring is cylindrical, the outer diameter is arranged in the cylinder barrel in a clearance matching way, and a through hole with the aperture larger than the outer diameter of the capillary tube is designed in the center of the cylinder.
Further, the cylinder is tubular, and the side wall of the cylinder is provided with at least one through hole; the piston is of a hollow structure, and at least one through hole is formed in the side wall of the piston.
Further, a through hole is formed in the center of the limiting plate and is communicated with the piston cavity.
Further, the cylinder cover is in threaded fit connection with the cylinder barrel, and a through hole with the aperture larger than the outer diameter of the capillary tube is formed in the center of the cylinder cover.
Compared with the prior art, the invention has the advantages that:
the invention changes the power source of the capillary tube clamping device from manual operation to pneumatic operation, provides the pneumatic clamping device for the capillary tube flow testing equipment, has simple structure and high operation efficiency, realizes two processes of automatically locking the capillary tube by connecting an air source and automatically releasing the capillary tube by disconnecting the air, liberates manpower, shortens testing time, improves the automation degree of testing and simplifies testing technology.
Drawings
Figure 1 is a schematic cross-sectional view of the present invention,
FIG. 2 is an isometric view of FIG. 1;
FIG. 3 is an enlarged schematic view of the piston of FIG. 1;
fig. 4 is an enlarged schematic view of one of the push plates of fig. 1.
The device comprises a cylinder, a piston, a lower pushing plate, a rubber ring, an upper pushing plate, a cylinder cover and a capillary tube, wherein the cylinder is characterized in that the cylinder is provided with the cylinder, the piston is provided with the cylinder, the cylinder is provided with the piston, the lower pushing plate is provided with the cylinder, the rubber ring is provided with the rubber ring, the upper pushing plate is provided with the cylinder, the cylinder cover is provided with the cylinder cover, and the capillary tube is provided with the capillary tube; 11. and a limiting plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
As shown in fig. 1-2, the pneumatic capillary tube clamping device comprises a cylinder barrel, a piston, a cylinder cover, a spring, a pair of push plates and a rubber ring.
The cylinder barrel 4 is of a cylindrical structure, and one end of the cylinder barrel is provided with external threads which are matched and locked with the internal threads of the cylinder cover 9; the other end is an air inlet 1 which is communicated with a compressed air source. The inside air inlet end of cylinder 4 is equipped with the cylinder 3 with air inlet 1 intercommunication, and cylinder 3 is tubulose, and cylinder 3 bottom and cylinder 4 bottom structure as an organic whole, cylinder 3 lateral wall set up at least one through-hole.
The piston 5 is installed in the cylinder 3, and the piston 5 is hollow structure, and piston 5 external diameter size and cylinder 3 internal diameter clearance fit, and piston 5 lateral wall is provided with at least one through-hole, and the piston 5 top is equipped with limiting plate 11, and limiting plate 11 designs as an organic whole with piston 5, and limiting plate 11 is connected through spring 2 with cylinder 4 bottom, and spring 2 is in tensile state. The function of the spring 2 is: after the test gas has been disconnected, the piston 5 is pulled back into the initial limit position of the limit plate 11.
The push plate comprises an upper push plate 8 and a lower push plate 6, the whole push plate is cylindrical, a through hole with the aperture larger than the outer diameter of the capillary tube 10 is designed in the center of the cylinder, and the outer diameter of the push plate is in clearance fit with the inner diameter of the cylinder barrel 4. The rubber ring 7 is arranged between the upper push plate 8 and the lower push plate 6, the end faces of the upper push plate 8, the lower push plate 6 and the rubber ring 7 are provided with inward taper, the lower push plate 6 is matched with the limiting plate 11, and the upper push plate 8 is positioned at the top of the cylinder barrel 4. Regarding the structural design of the push plate, the end of the lower push plate 6 matched with the limiting plate 11 is preferably a plane, and the end matched with the rubber ring 7 is provided with an inward taper; the upper push plate 8 is flat at one end matched with the top of the cylinder barrel 4, and has an inward taper at one end matched with the rubber ring 7. The inward taper of the lower push plate 6 and the upper push plate 8 are matched with the rubber ring 7 in an extrusion mode, the cylinder barrel 4 is sealed, and the capillary tube 10 is locked. The invagination taper has two effects: firstly, the inward taper is matched with the rubber ring 7 in an extrusion mode, so that the cylinder 4 is sealed and the capillary tube 10 is locked; secondly, the capillary 10 is guided.
The rubber ring 7 is cylindrical in whole, the outer diameter is installed in the cylinder barrel 4 in a clearance matching way, and a through hole with the aperture larger than the outer diameter of the capillary tube 10 is designed in the center of the cylinder. The center of the limiting plate 11 is provided with a through hole and is communicated with the cavity of the piston 5.
The center of the cylinder cover 9 is provided with a through hole with the aperture larger than the outer diameter of the capillary tube 10, and the insertion end of the capillary tube 10 is provided with a taper hole, so that the capillary tube 10 is guided, and the capillary tube 10 is convenient to insert. When in use, the capillary tube 10 penetrates through the cylinder cover 9, the upper push plate 8, the rubber ring 7, the lower push plate 6 and the limit plate 11 and stretches into the piston 5; the inward taper of the upper push plate 8 and the lower push plate 6 are matched with the rubber ring 7 in an extrusion way, and the capillary tube 10 is locked.
The specific working process is as follows: the capillary tube 10 is inserted, the air source is connected, compressed air enters from the air inlet 1, the air pushes the piston 5 to move, the limiting plate 11 pushes the pushing plates (the upper pushing plate 8 and the lower pushing plate 6) to squeeze the rubber ring 7, and the rubber ring 7 locks and seals the capillary tube 10. At this time, the piston 5 is advanced to the through hole of the side wall of the cylinder 3, and the compressed gas is introduced into the cylinder tube 4, and the cylinder tube gas is communicated with the inner cavity of the piston through the through hole of the side wall of the piston 5 and is simultaneously communicated with the capillary tube 10. At this time, the capillary tube 10 is in a locking and sealing state and is communicated with an air source; the spring 2 is in tension.
When the gas is disconnected, the piston 5 returns to the initial position limited by the limiting plate under the tensile force of the spring 2, and the rubber ring 7 rebounds to release the capillary 10, so that the capillary 10 can be pulled out.
In summary, the invention realizes two processes of automatically locking the capillary tube by switching on the air source and automatically releasing the capillary tube by switching off the air source, liberates manpower, shortens the test time, simplifies the test process and improves the test efficiency.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. Pneumatic capillary clamping device, its characterized in that: the cylinder barrel comprises a cylinder barrel, a piston, a cylinder cover, a spring, a pair of push plates and a rubber ring;
the cylinder barrel is of a cylindrical structure, one end of the cylinder barrel is matched and locked with the cylinder cover, the other end of the cylinder barrel is provided with an air inlet communicated with a compressed air source, an air cylinder communicated with the air inlet is arranged at the air inlet end inside the cylinder barrel, the bottom of the air cylinder and the bottom of the cylinder barrel are of an integrated structure, and a through hole is formed in the side wall of the air cylinder;
the piston is arranged in the cylinder, the outer diameter of the piston is in clearance fit with the inner diameter of the cylinder, a through hole is formed in the side wall of the piston, a limiting plate is arranged at the top of the piston, the limiting plate and the piston are integrally designed, the limiting plate is connected with the bottom of the cylinder barrel through a spring, and the spring is in a stretching state;
the push plate comprises an upper push plate and a lower push plate, the rubber ring is arranged between the upper push plate and the lower push plate, the end surfaces of the upper push plate and the lower push plate matched with the rubber ring are provided with inward taper, the lower push plate is matched with the limiting plate, and the upper push plate is positioned at the top of the cylinder barrel; the capillary tube penetrates through the cylinder cover, the upper pushing plate, the rubber ring, the lower pushing plate and the limiting plate and stretches into the piston; the inward taper of the upper push plate and the lower push plate is matched with the rubber ring in an extrusion way, and the capillary tube is locked.
2. A pneumatic capillary clamping device according to claim 1, wherein: the whole cylinder of push pedal, cylinder center design has the aperture to be greater than the through-hole of capillary external diameter, push pedal external diameter size and cylinder internal diameter clearance fit.
3. A pneumatic capillary clamping device according to claim 2, wherein: one end of the lower push plate matched with the limiting plate is a plane, and one end of the lower push plate matched with the rubber ring is provided with an inward taper.
4. A pneumatic capillary clamping device according to claim 2, wherein: the matched end of the upper push plate and the top of the cylinder barrel is a plane, and the matched end of the upper push plate and the rubber ring is provided with an inward taper.
5. A pneumatic capillary clamping device according to claim 1, wherein: the rubber ring is integrally cylindrical, the outer diameter of the rubber ring is arranged in the cylinder barrel in a clearance matching way, and a through hole with the aperture larger than the outer diameter of the capillary tube is designed in the center of the cylinder.
6. A pneumatic capillary clamping device according to claim 1, wherein: the cylinder is tubular, and the side wall of the cylinder is provided with at least one through hole; the piston is of a hollow structure, and at least one through hole is formed in the side wall of the piston.
7. A pneumatic capillary gripping device according to claim 6, wherein: and the center of the limiting plate is provided with a through hole and is communicated with the piston cavity.
8. A pneumatic capillary clamping device according to claim 1, wherein: the cylinder cover is in threaded fit connection with the cylinder barrel, and a through hole with the aperture larger than the outer diameter of the capillary tube is formed in the center of the cylinder cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311199.2A CN109990860B (en) | 2019-04-18 | 2019-04-18 | Pneumatic capillary clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311199.2A CN109990860B (en) | 2019-04-18 | 2019-04-18 | Pneumatic capillary clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990860A CN109990860A (en) | 2019-07-09 |
| CN109990860B true CN109990860B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910311199.2A Active CN109990860B (en) | 2019-04-18 | 2019-04-18 | Pneumatic capillary clamping device |
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| CN (1) | CN109990860B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012100836B3 (en) * | 2012-02-01 | 2013-04-11 | Cybio Ag | Kapillardispenser |
| CN105705241A (en) * | 2013-11-07 | 2016-06-22 | 吉尔松有限合伙公司 | Positive displacement pipetting system, having a design facilitating the gripping of the piston of the capillary-piston assembly |
| CN205685069U (en) * | 2016-05-25 | 2016-11-16 | 深圳市兆捷科技有限公司 | A kind of pneumatic mechanism clamping workpiece |
| CN207864890U (en) * | 2017-12-27 | 2018-09-14 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe swelling clamping device |
| CN209605889U (en) * | 2019-04-18 | 2019-11-08 | 山东省科学院海洋仪器仪表研究所 | Pneumatic capillary pipe clamping device |
-
2019
- 2019-04-18 CN CN201910311199.2A patent/CN109990860B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012100836B3 (en) * | 2012-02-01 | 2013-04-11 | Cybio Ag | Kapillardispenser |
| CN105705241A (en) * | 2013-11-07 | 2016-06-22 | 吉尔松有限合伙公司 | Positive displacement pipetting system, having a design facilitating the gripping of the piston of the capillary-piston assembly |
| CN205685069U (en) * | 2016-05-25 | 2016-11-16 | 深圳市兆捷科技有限公司 | A kind of pneumatic mechanism clamping workpiece |
| CN207864890U (en) * | 2017-12-27 | 2018-09-14 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe swelling clamping device |
| CN209605889U (en) * | 2019-04-18 | 2019-11-08 | 山东省科学院海洋仪器仪表研究所 | Pneumatic capillary pipe clamping device |
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|---|---|
| CN109990860A (en) | 2019-07-09 |
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