CN1216234C - Grease proofing sealed assembly on oil-free gas compressor - Google Patents
Grease proofing sealed assembly on oil-free gas compressor Download PDFInfo
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- CN1216234C CN1216234C CN 03116104 CN03116104A CN1216234C CN 1216234 C CN1216234 C CN 1216234C CN 03116104 CN03116104 CN 03116104 CN 03116104 A CN03116104 A CN 03116104A CN 1216234 C CN1216234 C CN 1216234C
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- sealing
- piston rod
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- rod
- gas compressor
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Abstract
The present invention relates to a piston-rod oilproof sealing assembly for oil-free lubrication gas compressors, which is characterized in that the piston-rod oilproof sealing assembly comprises a self-tightening hat-type sealing part and a rod-type sealing part, wherein the hat-type sealing part is composed of an upper sealing seat, a hat sealing element, an O-shaped sealing ring and an upper spring seat, the hat sealing element is arranged in a seat hole of the upper sealing seat and sheathed on a piston rod, the O-shaped sealing ring is sheathed on the periphery of the hat sealing element, and the top end surface of the upper spring seat presses against the hat sealing element and the O-shaped sealing ring; the rod-type sealing part is composed of a lower sealing seat, a rod sealing element and a lower spring seat; the rod sealing element is butted with one end of the lower sealing seat, provided with a conical convex ring and sheathed on the piston rod, and the lower spring seat is provided with a conical surface matched with the conical convex ring of the rod sealing element; a spring is arranged between the upper spring seat and the lower spring seat. The present invention solves the technical problem of short service life caused by great frictional resistance, high power consumption, and failure of automatically compensating abrasion, which exist in the existing sealing assembly.
Description
Technical field:
The invention relates to Sealing, especially about Sealing grease proofing, gas leakage.
Background technique:
Existing oil-free lubrication piston gas compressor is mostly basically to be to adopt knockdown sealing to prevent the leakage problem of oil, gas.The combination that wherein the most frequently used is by stuffing box and oil deflector, with the gap between packing box seal piston rod and the cylinder seat, prevent gas by in the cylinder along piston rod to external leakage; And stop that with oil deflector the lubricant oil in the crankcase brought in the stuffing box by piston rod, finally infiltrate in the cylinder.Sometimes in order to strengthen the oil resistance effect, can also be provided with oil wiper again, this existing combined labyrinth and carbon gland has following deficiency:
1. the frictional resistance of stuffing box is big, and not only power dissipation is big, and easily heating, and cooling effect is poor, if desire strengthens cooling, then causes problems such as complex structure, cost increase again.
2. filler is easy to wear, forms gas leakage, so need often to adjust, change, has increased the weight of maintenance service work.
3. can not get compensation after the wearing and tearing of oil wiper inner seal ring, cause the frizing effect to descend, working life is short.
4. the rubber stop of oil deflector oil lip and axle journal tighten a little less than the automatic compensation ability of degree, the poor reliability of sealing.
Summary of the invention:
The invention provides the grease proofing black box of a kind of non-lubricated gas compressor piston rod, solve that existing envelope seal assembly frictional resistance is big, power consumption greatly automatically compensate for wear cause the technical problem of lacking working life.
The technological scheme that the present invention solves the problems of the technologies described above is as follows:
The grease proofing black box of a kind of non-lubricated gas compressor piston rod is characterized in that: the sealing assembly comprises hat type sealing and rod-type sealing two-part of self tightening; The sealing of this hat type by upper seal support, place in the seat hole of upper seal support and be placed in cap-type seal on the piston rod, be enclosed within the upper spring seat that O RunddichtringO, the top end of this cap-type seal periphery be pressed against on cap-type seal and the O RunddichtringO and form; The sealing of this rod-type by bottom sealing socket, be resisted against bottom sealing socket one end and have the taper bulge loop and be enclosed within shaft seal on the piston rod, have the lower spring cup of the conical surface that is complementary with this shaft seal taper bulge loop; Between upper and lower spring seat, be provided with spring.
The above-mentioned grease proofing black box of non-lubricated gas compressor piston rod, it is characterized in that: this cap-type seal and shaft seal are by the filled polytetrafluoroethylene made.
The above-mentioned grease proofing black box of non-lubricated gas compressor piston rod is characterized in that: this taper bulge loop has the bipyramid face; This bottom sealing socket has the conical surface that is complementary with this shaft seal taper bulge loop.
The above-mentioned grease proofing black box of non-lubricated gas compressor piston rod, it is characterized in that: the endoporus of this shaft seal the other end is provided with the ring that rises.
The above-mentioned grease proofing black box of non-lubricated gas compressor piston rod is characterized in that: the distance between this hat type sealing and the rod-type sealing is greater than the stroke of piston rod.
The above-mentioned grease proofing black box of non-lubricated gas compressor piston rod is characterized in that: be provided with the fixedly closed casing of usefulness.
The present invention has following advantage:
1. the friction factor of cap-type seal and shaft seal and piston rod is little, thus resistance is little, heating less, power consumption is little.
2. under the effect of O RunddichtringO and spring force, cap-type seal and shaft seal are inwardly shunk automatically, compensate for the wearing and tearing in the motion, and the reliability height has improved working life.
3. envelope gas ability is strong, especially under high pressure leaks fewly, and does not have oil and enters cylinder, has improved the purity of pressurized gas.
4. simplify maintenance, reduced maintenance and operating cost.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
See also shown in Figure 1, hat type sealing 1 and rod-type that the present invention comprises self tightening seal 2 two-part, hat type sealing 1 and rod-type sealing 2 are set in respectively on the piston rod 4, and this hat type sealing 1 is made up of upper seal support 11, cap-type seal 15, O RunddichtringO 13 and upper spring seat 12.The cap-type seal made from filled polytetrafluoroethylene 15 is arranged in the seat hole of upper seal support 11, and its inner peripheral surface contacts with piston rod 4, and its outer peripheral surface is arranged with O RunddichtringO 13, two O RunddichtringOs 13 of operated by rotary motion, or more quantity.Stacked O RunddichtringO 13 and cap-type seal 15 upper-end surfaces are subjected to stopping of 11 hole end surfaces of upper seal support, its lower end surface is resisted against on the upper-end surface of upper spring seat 12, owing to contract in the O RunddichtringO 13, so the side face of cap-type seal 15 endoporus is close on the outer circumferential face of piston rod 4 all the time, form the cap sealing of self tightening, in cylinder, leak along piston rod 4 to prevent gas.Rod-type sealing 2 is made up of lower spring cup 24, shaft seal 21, bottom sealing socket 23.Shaft seal 21 also is the filled polytetrafluoroethylene made by wear-resistant and anti-oil, it with bottom sealing socket 23 against an end be provided with a taper bulge loop 212.Lower spring cup 24 has the conical surface that is complementary with this taper bulge loop 212, and one end of shaft seal 21 is exerted pressure by this conical surface, make its inside contraction, force the lower end inner peripheral wall of shaft seal 21 to be close to all the time on the outer circumferential face of piston rod 4, form the rod seal of self tightening, will go back by the lubricant oil removing of being stained with in the crank box on the piston rod 4.3 on spring is arranged between upper and lower spring seat 12 and 24, produces self-tightening power.Be the inside contraction of reinforcing bar Sealing 21, this taper bulge loop 212 can have bipyramid face as shown in the figure, and also be provided with on the bottom sealing socket 23 with the bipyramid face in the conical surface of following conical surface coupling.For reducing the friction of shaft seal 21 and piston rod, in shaft seal 21 the other end endoporus, be provided with one rise the ring 22, it struts tapered gaps of separating with piston rod 4 of formation with the endoporus of shaft seal 21 upper semisections, has reduced the friction power loss of shaft seal 21 widely; On the other hand, above-mentioned tapered gaps has formed a wedge shape pump pressure district under by the gas pressure in the closed casing 5, helps going back along the lubricating pump on the piston rod 4 on a small quantity.Be provided with the closed casing 5 that is fixed on the cylinder seat 6 is sealed in hat type sealing 1 and rod-type sealing 2.In upper seal support 11, can also be provided with guide ring 14,, prevent that the cylinder inner carrier from contacting with the casing wall direct friction in order to guiding piston rod 4.This guide ring 14 is seated in the upper/lower terminal of cap-type seal 15 and O RunddichtringO 13 respectively, guides the straight line motion of piston rod 4 on the one hand, can help the self-tightening effect of O RunddichtringO 13 on the other hand.Distance between cap-type seal 15 and the shaft seal 21 should be greater than the stroke of piston rod 4, contacts with shaft seal 21 like this or the shaft part of the piston rod 4 in rod-type seals 2 scopes that moves can not move to cap-type seal 15 places, and like this then grease proofing effect is better.
Claims (9)
1, the grease proofing black box of a kind of non-lubricated gas compressor piston rod is characterized in that: the sealing assembly comprises hat type sealing and rod-type sealing two-part of self tightening; The sealing of this hat type by upper seal support, place in the seat hole of upper seal support and be placed in cap-type seal on the piston rod, be enclosed within the upper spring seat that O RunddichtringO, the top end of this cap-type seal periphery be pressed against on cap-type seal and the O RunddichtringO and form; The sealing of this rod-type by bottom sealing socket, be resisted against bottom sealing socket one end and have the taper bulge loop and be enclosed within shaft seal on the piston rod, have the lower spring cup of the conical surface that is complementary with this shaft seal taper bulge loop; Between upper and lower spring seat, be provided with spring.
2, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 1, it is characterized in that: this cap-type seal and shaft seal are by the filled polytetrafluoroethylene made.
3, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 1, it is characterized in that: this taper bulge loop has the bipyramid face; This bottom sealing socket has the conical surface that is complementary with this shaft seal taper bulge loop.
4, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 2, it is characterized in that: this taper bulge loop has the bipyramid face; This bottom sealing socket has the conical surface that is complementary with this shaft seal taper bulge loop.
5, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 3, it is characterized in that: the endoporus of this shaft seal the other end is provided with the ring that rises.
6, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 4, it is characterized in that: the endoporus of this shaft seal the other end is provided with the ring that rises.
7, according to claim 1,2,3,4, the grease proofing black box of 5 or 6 described non-lubricated gas compressor piston rods, it is characterized in that: the distance between this hat type sealing and the rod-type sealing is greater than the stroke of piston rod.
8, according to claim 1,2,3,4, the grease proofing black box of 5 or 6 described non-lubricated gas compressor piston rods, it is characterized in that: be provided with the fixedly closed casing of usefulness.
9, the grease proofing black box of non-lubricated gas compressor piston rod according to claim 7 is characterized in that: be provided with the fixedly closed casing of usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116104 CN1216234C (en) | 2003-04-01 | 2003-04-01 | Grease proofing sealed assembly on oil-free gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116104 CN1216234C (en) | 2003-04-01 | 2003-04-01 | Grease proofing sealed assembly on oil-free gas compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1439807A CN1439807A (en) | 2003-09-03 |
| CN1216234C true CN1216234C (en) | 2005-08-24 |
Family
ID=27797085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03116104 Expired - Fee Related CN1216234C (en) | 2003-04-01 | 2003-04-01 | Grease proofing sealed assembly on oil-free gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1216234C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810428B (en) * | 2012-07-23 | 2015-12-16 | 平高集团有限公司 | A kind of vacuum circuit-breaker |
| CN102788110B (en) * | 2012-08-17 | 2015-03-04 | 上海应用技术学院 | Seal structure of dual-rod magnetorheological fluid damper |
-
2003
- 2003-04-01 CN CN 03116104 patent/CN1216234C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1439807A (en) | 2003-09-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050824 Termination date: 20210401 |