CN102536743B - Two-way sealing structure for industrial vertical reciprocating compressor - Google Patents
Two-way sealing structure for industrial vertical reciprocating compressor Download PDFInfo
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- CN102536743B CN102536743B CN201210062574.2A CN201210062574A CN102536743B CN 102536743 B CN102536743 B CN 102536743B CN 201210062574 A CN201210062574 A CN 201210062574A CN 102536743 B CN102536743 B CN 102536743B
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- piston rod
- sealing structure
- upper cover
- way sealing
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Abstract
The invention provides a two-way sealing structure for an industrial vertical reciprocating compressor. By the two-way sealing structure, the downlink sealing of liquid high-carbon condensed matters can be ensured, and lubricating oil also can be prevented from entering an air cylinder, so that the uplink sealing of the lubricating oil is implemented to ensure the safe and stable running of the compressor. The two-way sealing structure comprises a piston rod, the air cylinder, a crankcase and a guiding bearing, wherein the guiding bearing is sleeved on the piston rod and isolates the air cylinder and the crankcase. The two-way sealing structure is characterized in that: an annular groove is formed at the upper end of the piston rod, which is positioned on the guiding bearing; an O-shaped ring is sleeved in the annular groove and is positioned in inner cavity formed by an oil blocking upper cover, an oil blocking lower cover and the piston rod; the oil blocking upper cover and the oil blocking lower cover are tightly attached to the O-shaped ring; the upper end face of the oil blocking upper cover inclines downwards; and a dirt collecting tank is sleeved on the outer edge of the piston rod and is positioned below the oil blocking lower cover.
Description
Technical field
The present invention relates to oily reciprocating compressor technical field of sealing technology, be specially a kind of two-way sealing structure for industrial vertical reciprocating compressor.
Background technique
Reciprocating compressor is the universal machine that is widely used in every profession and trade.For effective pressurized gas, and ensure that gas is clean without oil, the descending sealing of gas except between guarantee piston and cylinder and the descending sealing of some process gas medium high carbon polymer, also will ensure the up sealing of the lubricant oil in oil sump.At present, mainly between piston rod and cylinder adopt packing seal, and developed into contactless labyrinth seal by contact seal, avoided replacement and because lubricant oil and filler abrasive dust cause the problem of medium pollution.But this labyrinth packing sealing can not be to some process gas because the liquid high-carbon condensation product that compression forms plays effective seal action, the gap along labyrinth filler and piston rod is flowed into crankcase oil sump by high-carbon condensation product, can cause lubricant oil severe contamination, lose great; Meanwhile, due to pumping of piston, piston rod can be brought the more lubricant oil splashing, and existing structure lubricant oil easily enters cylinder and pollutes process gas, causes serious accident.
Summary of the invention
For the problems referred to above, the invention provides a kind of two-way sealing structure for industrial vertical reciprocating compressor, it can not only ensure the descending sealing of liquid high-carbon condensation product, can also effectively stop lubricant oil to enter cylinder, realize the up sealing of lubricant oil, guarantee the running of compressor safety and stability.
A kind of two-way sealing structure for industrial vertical reciprocating compressor, its technological scheme is such: it comprises piston rod, cylinder, crankcase, guide bearing, described guide bearing is set in described piston rod, described guide bearing is isolated described cylinder, crankcase, it is characterized in that: the upper end that is positioned at described guide bearing of described piston rod has annular groove, O type snare is loaded in described annular groove, described O type circle is positioned at the oily upper cover of gear, keep off oily lower cover, in the internal cavity that piston rod forms, the oily upper cover of described gear, keep off oily lower cover and be close to described O type circle, the upper-end surface of the oily upper cover of described gear is downward-sloping, sewage sump is set in the outer rim of described piston rod, described sewage sump is positioned at the below of the oily lower cover of described gear, described sewage sump is with downward-sloping inclined-plane, center, the outer emboss pit of the oily upper cover of described gear is supported on the mounting plane of described sewage sump, the inner side, underpart of described sewage sump is supported on described guide bearing, the outside, underpart of described sewage sump is supported on feculence box, described feculence box is provided with outlet passage.
It is further characterized in that: the oily upper cover of described gear, gear oil lower cover are fastenedly connected, the inner side of the oily upper cover of described gear, gear oil lower cover is provided with smooth inclined-plane in position in opposite directions, the oily upper cover of described gear, the gear oil inner side smooth bevel of lower cover and the outer rim of described piston rod form internal cavity, described gear oil upper cover, keep off smooth bevel inside oily lower cover and are close to described O type circle;
Described sewage sump is divided into two lobes, and the mutual buckle of the surface of contact of two lobe sewage sumps connects, and sewage sump inside thread connects the outer rim of described piston rod described in buckle all-in-one-piece;
The inner side, underpart of described sewage sump is horizontal plane, on described horizontal plane, is evenly equipped with through hole, and guide bearing end cap is fastenedly connected described through hole, and described guide bearing end cap mounts cover in described guide bearing;
The side away from piston rod that described outlet passage is specially described feculence box has aperture, described aperture connection outlet pipe joint;
Described aperture is positioned at the 10mm At The Height of described feculence box bottom plane;
Described feculence box has two, and described feculence box is installed on the below, position of corresponding sewage sump;
Described gear oil upper cover thickness D is 8～12mm, is designed with two inclined-planes, place: wherein ramp radial width W is taken as 10～12mm, and tilt angle alpha is 20 °～25 °; The inclination angle beta of lower inclined plane is 12 °～18 °;
Dividing plate is between described cylinder, crankcase, and described feculence box is supported on described dividing plate;
Between described guide bearing, piston rod, be provided with scraper ring.
In the present invention, the high-carbon condensation product forming in process gas in compressor operating has been blocked descending outlet by O type circle, upper-end surface along the oily upper cover of gear is slipped to sewage sump, be pooled in feculence box along the inclined-plane of sewage sump again, in the time that fluid accumulation arrives certain altitude, just discharge cylinder from outlet passage; Blocked up passage by the lubricant oil coming on piston rod adherent zone by O type circle, just along the oil sump of piston rod backflow crankcase, the lubricant oil splashing up due to moving element to-and-fro motion also can be by lower falling the after rise of interior inclined-plane gear of sewage sump, feculence box and gear oil lower cover.So, can ensure that lubricant oil and process gas are not contaminated simultaneously.To sum up, it can not only ensure the descending sealing of liquid high-carbon condensation product, can also effectively stop lubricant oil to enter cylinder, realizes the up sealing of lubricant oil, guarantees the running of compressor safety and stability.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the local structure for amplifying schematic diagram in the A place of Fig. 1.
Embodiment
See Fig. 1, Fig. 2, it comprises piston rod 1, cylinder 2, crankcase 3, guide bearing 4, guide bearing 4 is set in piston rod 1, guide bearing 4, 1, piston rod is provided with scraper ring 21, guide bearing 4 is isolated cylinder 2, crankcase 3, the upper end that is positioned at guide bearing 4 of piston rod 1 has annular groove 5, O type circle 6 is set in annular groove 5, O type circle 6 is positioned at the oily upper cover 7 of gear, keep off oily lower cover 8, in the internal cavity 9 that piston rod 1 forms, keep off oily upper cover 7, keep off oily lower cover 8 and be close to O type circle 6, the upper-end surface that keeps off oily upper cover 7 is downward-sloping, sewage sump 10 is set in the outer rim of piston rod 1, sewage sump 10 is positioned at the below of the oily lower cover 7 of gear, sewage sump 10 is with downward-sloping inclined-plane, center, the outer emboss pit 11 that keeps off oily upper cover 7 is supported on the mounting plane 12 of sewage sump 10, the inner side, underpart of sewage sump 10 is supported on guide bearing 4, the outside, underpart of sewage sump 10 is supported on feculence box 13, feculence box 13 is provided with outlet passage.
Keep off oily upper cover 7, keep off oily lower cover 8 and be fastenedly connected by screw 14, screw 14 and keep off between oily lower cover 8 plug pad 22 is housed, the inner side that keep off oily upper cover 7, keeps off oily lower cover 8 is provided with smooth inclined-plane in position in opposite directions, keep off oily upper cover 7, keep off the inner side smooth bevel of oily lower cover 8 and the outer rim of piston rod 1 and form internal cavity 9, keep off oily upper cover 7, keep off oily lower cover 8 inner side smooth bevels and be close to O type circle 6;
Sewage sump 10 is divided into two lobes, and the mutual buckle of surface of contact of two lobe sewage sumps connects, and buckle all-in-one-piece sewage sump 10 inside threads connect the outer rim of piston rod 1;
The inner side, underpart of sewage sump 10 is horizontal plane 15, is evenly equipped with through hole 16 on horizontal plane 15, and guide bearing end cap 17 is fastenedly connected through hole 16, and guide bearing end cap 17 mounts cover in guide bearing 4;
The side away from piston rod 1 that outlet passage is specially feculence box 13 has aperture 18, aperture 18 connection outlet pipe joints 19;
Aperture 18 is positioned at the 10mm At The Height of feculence box 13 bottom planes;
Feculence box 13 has two, and feculence box 13 is installed on the below, position of corresponding sewage sump 10;
Keeping off oily upper cover 7 thickness is 8～12mm, is designed with two inclined-planes, place: wherein ramp radial width is taken as 10～12mm, and angle of inclination is 20 °～25 °; The angle of inclination of lower inclined plane is 12 °～18 °;
Dividing plate 20 is between cylinder 2, crankcase 3, and feculence box 13 is supported on dividing plate 20.
Claims (10)
1. a two-way sealing structure for industrial vertical reciprocating compressor, it comprises piston rod, cylinder, crankcase, guide bearing, described guide bearing is set in described piston rod, described guide bearing is isolated described cylinder, crankcase, it is characterized in that: the upper end that is positioned at described guide bearing of described piston rod has annular groove, O type snare is loaded in described annular groove, described O type circle is positioned at the oily upper cover of gear, keep off oily lower cover, in the internal cavity that piston rod forms, the oily upper cover of described gear, keep off oily lower cover and be close to described O type circle, the upper-end surface of the oily upper cover of described gear is downward-sloping, sewage sump is set in the outer rim of described piston rod, described sewage sump is positioned at the below of the oily upper cover of described gear, described sewage sump is with the inclined-plane tilting, the outer emboss pit of the oily upper cover of described gear is supported on the mounting plane of described sewage sump, the inner side, underpart of described sewage sump is supported on described guide bearing, the outside, underpart of described sewage sump is supported on feculence box, described feculence box is provided with outlet passage.
2. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 1, it is characterized in that: the oily upper cover of described gear, gear oil lower cover are fastenedly connected, the inner side of the oily upper cover of described gear, gear oil lower cover is provided with smooth inclined-plane in position in opposite directions, the oily upper cover of described gear, the gear oil inner side smooth bevel of lower cover and the outer rim of described piston rod form internal cavity, described gear oil upper cover, keep off smooth bevel inside oily lower cover and are close to described O type circle.
3. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 2, it is characterized in that: described sewage sump is divided into two lobes, the mutual buckle of the surface of contact of two lobe sewage sumps connects, and sewage sump inside thread connects the outer rim of described piston rod described in buckle all-in-one-piece.
4. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 3, it is characterized in that: the inner side, underpart of described sewage sump is horizontal plane, on described horizontal plane, be evenly equipped with through hole, guide bearing end cap is fastenedly connected described through hole, and described guide bearing end cap mounts cover in described guide bearing.
5. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 1, is characterized in that: the side away from piston rod that described outlet passage is specially described feculence box has aperture, described aperture connection outlet pipe joint.
6. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 5, is characterized in that: described aperture is positioned at the 10mm At The Height of described feculence box bottom plane.
7. according to a kind of two-way sealing structure for industrial vertical reciprocating compressor described in claim 1 or 6, it is characterized in that: described feculence box has two, described feculence box is installed on the below, position of corresponding sewage sump.
8. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 2, it is characterized in that: described gear oil upper cover thickness D is 8～12mm, be designed with two inclined-planes, place: wherein ramp radial width W is taken as 10～12mm, tilt angle alpha is 20 °～25 °; The inclination angle beta of lower inclined plane is 12 °～18 °.
9. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 1, is characterized in that: dividing plate is between described cylinder, crankcase, and described feculence box is supported on described dividing plate.
10. a kind of two-way sealing structure for industrial vertical reciprocating compressor according to claim 1, is characterized in that: between described guide bearing, piston rod, be provided with scraper ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210062574.2A CN102536743B (en) | 2012-03-12 | 2012-03-12 | Two-way sealing structure for industrial vertical reciprocating compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210062574.2A CN102536743B (en) | 2012-03-12 | 2012-03-12 | Two-way sealing structure for industrial vertical reciprocating compressor |
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| CN102536743A CN102536743A (en) | 2012-07-04 |
| CN102536743B true CN102536743B (en) | 2014-07-30 |
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| US5050892A (en) * | 1989-03-09 | 1991-09-24 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Sealing arrangement for piston in compressor |
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| CN101660515A (en) * | 2009-09-18 | 2010-03-03 | 广州机械科学研究院 | Sealing structure of piston rod of piston type intermediate-pressure and high-pressure compressor |
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| JP4123547B2 (en) * | 1997-07-31 | 2008-07-23 | 株式会社スギノマシン | Ultra-high pressure fluid sealing device |
| CN101960142B (en) * | 2008-10-27 | 2013-08-21 | 松下电器产业株式会社 | Sealed compressor |
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| US5050892A (en) * | 1989-03-09 | 1991-09-24 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Sealing arrangement for piston in compressor |
| DE29717654U1 (en) * | 1997-10-02 | 1998-11-12 | Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben | Piston for a piston compressor |
| CN201121676Y (en) * | 2007-11-26 | 2008-09-24 | 江阴强顺科技有限公司 | Double-safety sealing gas spring |
| CN201232628Y (en) * | 2008-07-18 | 2009-05-06 | 西安交通大学 | Seal structure for piston ring |
| CN101660515A (en) * | 2009-09-18 | 2010-03-03 | 广州机械科学研究院 | Sealing structure of piston rod of piston type intermediate-pressure and high-pressure compressor |
| CN101737302A (en) * | 2010-01-22 | 2010-06-16 | 广州机械科学研究院 | Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor |
| CN102192126A (en) * | 2010-03-08 | 2011-09-21 | 盐城三益石化机械有限公司 | Sealing structure of pneumatic pump piston |
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