CN2861538Y - Mechanical shaft seal for compressor - Google Patents
Mechanical shaft seal for compressor Download PDFInfo
- Publication number
- CN2861538Y CN2861538Y CN 200520118068 CN200520118068U CN2861538Y CN 2861538 Y CN2861538 Y CN 2861538Y CN 200520118068 CN200520118068 CN 200520118068 CN 200520118068 U CN200520118068 U CN 200520118068U CN 2861538 Y CN2861538 Y CN 2861538Y
- Authority
- CN
- China
- Prior art keywords
- ring
- shaft seal
- seal cover
- housing
- guide ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model relates to a shaft seal, in particular to a compressor mechanical shaft seal in the gas compressor field, which comprises a rotary shaft supported by a housing, the shaft seals are arranged axially between the rotary shaft and the housing to prevent medium inside the body from leaking out from the housing. The model is characterized in that the shaft seal comprises a spring rotating with the shaft, a guide ring, an O ring, a dynamic fiction ring, a shaft seal cover fixed on the housing and a shaft seal cover gasket; an inner truncated cone is arranged on the guide ring side, and a secondary inner truncated cone is arranged on the other side; the spring props up the guide ring propping up the dynamic fiction ring by the O ring; the face of the dynamic fiction ring props up the shaft seal cover and the fiction between the two elements is rotating dynamic fiction. In the utility model, the spring props up the O ring and dynamic fiction ring to the shaft seal cover to prevent medium from leaking; thus the model has the advantages of good performance in self-lubrication due to high surface finish single face dynamic seal between the dynamic fiction ring and the shaft seal cover, wear resistance, corrosion resistance, and high temperature resistance, high strength, long life span, simple structure, convenient installation and leakage-free.
Description
Technical field
The utility model relates to a kind of envelope, refers in particular to compressor mechanical shaft seal in the gas compressor field.
Background technique
Compressor does not allow medium to leak, and is strict to the axle envelope.Different according to gaseous species and pressure are adopted different axle envelopes.Current domestic and international used axle envelope has liquid film to float ring shaftseal, mechanical shaft seal, throttling ring shaftseal and oil-free lubrication gas axle envelope, there is following shortcoming and defect part in these several sealing means: in the floating ring shaftseal of liquid film, floating ring metal manufacturing is by the oil film seal between axle and floating ring.Advantage is that overall structure is simple, and high, medium and low depressing all can be adopted, and shortcoming is that leakage rate is bigger.When sealing fluid recycles, leak the 20-40 liter every day, 6-10 liter every day is not reclaimed in oil return in the interior floating ring of special construction, needs to be equipped with huge sealing oil station and corresponding sealing control system.To inject separation gas in addition, with the pollution of oil return in reducing.Mechanical shaft seal is that the axle envelope place between medium and atmosphere installs one group of double mechanical seal, and logical therebetween sealing oil is with lubricated and cooling mechanical seal.It belongs to contact seal, because linear velocity is big, it is big to produce heat.Though leakage rate is less, every day is the 4-6 liter only, complex structure, and the installation specification height also need be set up the sealing oil station.In the restrictor ring sealing, seal ring is installed in the isolating ring with graphite or other suitable made, selects number of seals according to the pressure size, seal ring can not float, assemblage gap is strict, injects blanket gas (liquid) by media end, reduces pressure through the seal ring throttling, a seal ring to atmospheric side, exhaust (liquid) mouth is arranged, and it and negative pressure chamber connect, and avoid leaking into atmosphere.During it can be used for, under the low-pressure.The oil-free lubrication gas seal claims the self-applying gas seal again, it is the sealing means that new development is got up, its similar mechanical seal, difference is to be carved with spiral chute on the hard anchor ring, spiral chute plays pressurized gas during high speed rotating, and the air pressure of generation does not contact dynamic and static ring, and wearing and tearing and power consumpiton all reduce greatly, this air pressure has stoped leaking of medium again, thereby realizes sealing.Its shortcoming is to still have a small amount of medium to leak, and for hazardous gases such as hydrogen and petroleum gas, still needs to inject environmentally safe gas in Seal cage, for example nitrogen etc.This sealing means complex structure, cost is high.Comprehensive above several sealing means, the needs that have oil station has increased cost of equipment and rate of fault, the installation specification height that has, the cost height, Economy is all bad.
Summary of the invention
The purpose of this utility model is improved at shortcoming that exists in the background technique and problem, provides a kind of simple in structure, and cost is low, and the life-span is long, leak free compressor mechanical shaft seal.
The technological scheme that realizes the utility model purpose is: the utility model comprises the running shaft that is supported by housing, axle envelope component axial is arranged between running shaft and the housing, prevent that medium is outwards revealed from housing in the body, be characterized in that axle envelope parts are by the spring that rotates with the axis, guide ring, O type circle, dyanainic friction ring and the shaft seal cover and the shaft seal cover pad that are fixed on the housing are formed, wherein a side of guide ring is provided with interior round platform, opposite side is provided with round platform in the secondary, spring heads on guide ring, guide ring heads on the dyanainic friction ring by O type circle, and the end face of dyanainic friction ring heads on shaft seal cover and both are the rotational slide friction.
The utility model adopts international most advanced material formulated, spring withstands shaft seal cover with O type circle and dyanainic friction ring and prevents dielectric leakage, owing to adopt the mode of high finishingness single end face motive sealing between dyanainic friction ring and the shaft seal cover, it is good to have self-lubricating property, wear-resisting, corrosion-resistant, high temperature resistant, the intensity height, life-span is long, simple in structure, easy for installation, there are not advantages such as leakage substantially.
Description of drawings
Fig. 1 is the utility model assembly structure figure
Fig. 2 is axle envelope parts exploded perspective views
Embodiment
By accompanying drawing as can be known, the utility model comprises by the running shaft (8) of housing (9) supporting, axle envelope component axial is arranged between running shaft (8) and the housing (9), prevent that medium is outwards revealed from housing in the body, be characterized in that axle envelope parts are by the spring that rotates with the axis (1), guide ring (2), O type circle (3), dyanainic friction ring (4) and the shaft seal cover (6) and the shaft seal cover pad (5) that are fixed on the housing (9) are formed, wherein a side of guide ring (2) is provided with interior round platform, opposite side is provided with round platform in the secondary, spring (1) heads on guide ring (2), guide ring (2) heads on dyanainic friction ring (4) by O type circle (3), and the end face of dyanainic friction ring (4) heads on shaft seal cover (6) and both are the rotational slide friction.
Spring (1) one end described in the utility model is fixed on the interior round platform of guide ring (2), and the spring the other end is fixed on the bent axle.Connect spring (1) on the round platform in one side of described guide ring (2), opposite side is provided with round platform in the secondary, and one-level is equipped with O type circle (3), and another level is equipped with dyanainic friction ring (4).Described O type circle (3) is a seal ring, is located on the interior circle of guide ring (2), and a side of O type circle (3) and dyanainic friction ring (4) touch.Described dyanainic friction ring (4) is contained on the interior round platform of guide ring (2), and an end and O type circle touch, and the other end is the high finishingness end face, touches with shaft seal cover (6) friction.Described shaft seal cover (6) is fixed on the housing (9) by Luo bolt (7) with shaft seal cover pad (5), and an end of shaft seal cover (6) is the high finishingness end face, touches with dyanainic friction ring (4) friction.
Basic functional principle of the present utility model:
1, guide ring (2), O type circle (3), dyanainic friction ring (4) form radially static seal face.
2, guide ring (2), O type circle (3), dyanainic friction ring (4) form axial static seal face with the bent axle external part.
3, form the dynamic radial seal face between shaft seal cover (6) and the dyanainic friction ring (4).
Assembly technology of the present utility model:
Note the clean environment degree when 1, the make-up machinery axle seals.
2, before the assembling, the turbidity test and the nothing of please check the dyanainic friction ring, deciding attrition surface are damaged.
3, be coated with the thin oil film of one deck with refrigeration oil on the sealing surfaces such as dyanainic friction ring (4), shaft seal cover (6), O type circle (3) and compressor crank shaft.
4, dyanainic friction ring (4), O type circle (3) and guide ring (2) assemble together, and the big inclined-plane on the dyanainic friction ring (4) should be towards shaft seal cover (6).
5, in the assembly process, holddown spring (1) is with guide ring (2), O type circle (3), dyanainic friction ring (4) bent axle of packing into, can hear when putting in place by " card ".
Should note shaft seal cover pad (5) when 6, assembling, refill and join shaft seal cover, should note the TOP printed words up, fixing bolt (7) is tightened.
7, assembled the back and turned several circles, checked whether leak gas with hand.
Claims (6)
1, a kind of compressor mechanical shaft seal, comprise by the running shaft (8) of housing (9) supporting, axle envelope component axial is arranged between running shaft (8) and the housing (9), prevent that medium is outwards revealed from housing in the body, it is characterized in that axle envelope parts are by the spring that rotates with the axis (1), guide ring (2), O type circle (3), dyanainic friction ring (4) and the shaft seal cover (6) and the shaft seal cover pad (5) that are fixed on the housing (9) are formed, wherein a side of guide ring (2) is provided with interior round platform, opposite side is provided with round platform in the secondary, spring (1) heads on guide ring (2), guide ring (2) heads on dyanainic friction ring (4) by O type circle (3), and the end face of dyanainic friction ring (4) heads on shaft seal cover (6) and both are the rotational slide friction.
2, compressor mechanical shaft seal according to claim 1 is characterized in that described spring (1) one end is fixed on the interior round platform of guide ring (2), and the spring the other end is fixed on the bent axle.
3, compressor mechanical shaft seal according to claim 1 is characterized in that connecting spring (1) on the round platform in the side of described guide ring (2), and opposite side is provided with round platform in the secondary, and one-level is equipped with O type circle (3), and another level is equipped with dyanainic friction ring (4).
4, compressor mechanical shaft seal according to claim 1 is characterized in that described O type circle (3) is a seal ring, is located on the interior circle of guide ring (2), and a side of O type circle (3) and dyanainic friction ring (4) touch.
5, compressor mechanical shaft seal according to claim 1 is characterized in that described dyanainic friction ring (4) is contained on the interior round platform of guide ring (2), and an end and O type circle touch, and the other end is the high finishingness end face, touches with shaft seal cover (6) friction.
6, compressor mechanical shaft seal according to claim 1, it is characterized in that described shaft seal cover (6) is fixed on the housing (9) by Luo bolt (7) with shaft seal cover pad (5), one end of shaft seal cover (6) is the high finishingness end face, touches with dyanainic friction ring (4) friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520118068 CN2861538Y (en) | 2005-09-25 | 2005-09-25 | Mechanical shaft seal for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520118068 CN2861538Y (en) | 2005-09-25 | 2005-09-25 | Mechanical shaft seal for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2861538Y true CN2861538Y (en) | 2007-01-24 |
Family
ID=37659166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520118068 Expired - Fee Related CN2861538Y (en) | 2005-09-25 | 2005-09-25 | Mechanical shaft seal for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2861538Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234044A (en) * | 2013-05-13 | 2013-08-07 | 方高云 | Shaft seal of oil seal machinery |
| CN105026761A (en) * | 2012-12-31 | 2015-11-04 | 冷王公司 | Device and method for extending the lifespan of a shaft seal for an open-drive compressor |
| CN110945241A (en) * | 2017-07-20 | 2020-03-31 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
-
2005
- 2005-09-25 CN CN 200520118068 patent/CN2861538Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026761A (en) * | 2012-12-31 | 2015-11-04 | 冷王公司 | Device and method for extending the lifespan of a shaft seal for an open-drive compressor |
| US9897211B2 (en) | 2012-12-31 | 2018-02-20 | Thermo King Corporation | Device and method for extending the lifespan of a shaft seal for an open-drive compressor |
| US10801623B2 (en) | 2012-12-31 | 2020-10-13 | Thermo King Corporation | Device and method for extending the lifespan of a shaft seal for an open-drive compressor |
| CN103234044A (en) * | 2013-05-13 | 2013-08-07 | 方高云 | Shaft seal of oil seal machinery |
| CN110945241A (en) * | 2017-07-20 | 2020-03-31 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20110925 |