CN203348085U - Inner shaft seal of Roots vacuum pump - Google Patents
Inner shaft seal of Roots vacuum pump Download PDFInfo
- Publication number
- CN203348085U CN203348085U CN 201320296752 CN201320296752U CN203348085U CN 203348085 U CN203348085 U CN 203348085U CN 201320296752 CN201320296752 CN 201320296752 CN 201320296752 U CN201320296752 U CN 201320296752U CN 203348085 U CN203348085 U CN 203348085U
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- Prior art keywords
- ring
- seal
- seat
- seal ring
- machine
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- Expired - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
An inner shaft seal of a Roots vacuum pump comprises a labyrinth sealing seat, a sealing ring, a gasket, a first retainer ring, a mechanical seal static ring seat, a wavy spring, a mechanical seal sealing ring, a first sealing ring, a mechanical seal movable ring, a second retainer ring, a second sealing ring, a bearing and an end closure, wherein the labyrinth sealing seat, the sealing ring, the gasket, the first retainer ring, the mechanical seal static ring seat, the wavy spring, the mechanical seal sealing ring, the first sealing ring, the mechanical seal movable ring, the second retainer ring, the second sealing ring and the bearing are annularly arranged on an impeller shaft sequentially in a sleeving manner; the labyrinth sealing seat, the sealing ring, the gasket, the first retainer ring, the mechanical seal static ring seat, the wavy spring, the mechanical seal sealing ring, the first sealing ring and the second retainer ring are arranged inside the end closure. The inner shaft seal of the Roots vacuum pump has the advantages of capability of completely isolating and preventing an oil tank from being polluted by a process medium, applicability to water vapor, chemical gas and organic solvent vapor occasions, wide application range, and capability of effectively adapting to an occasion with very high requirements on treated gas, and the like.
Description
Technical field
The utility model relates to a kind of interior shaft seal, is specifically related to a kind of interior shaft seal for Roots pump.
Background technique
The interior shaft seal of traditional Roots pump is all very single piston ring packing, often can cause the emulsification of lubricating oil tank vacuum pump, causes bearing, gear failure, and short, the shortcoming such as rate of fault is high in working life is arranged.
The model utility content
The purpose of this utility model is, a kind of interior shaft seal of Roots pump is provided, to overcome the existing above-mentioned shortcoming and defect of prior art.
A kind of interior shaft seal of Roots pump, it is characterized in that, comprise: the labyrinth seal seat, seal ring, packing ring, the first back-up ring, machine envelope stationary seat, wavy spring, machine is sealed seal ring, the first seal ring, machine envelope rotating ring, the second back-up ring, the second seal ring, bearing and end cap, described labyrinth seal seat, seal ring, packing ring, the first back-up ring, machine envelope stationary seat, wavy spring, machine is sealed seal ring, the first seal ring, machine envelope rotating ring, the second back-up ring, the second seal ring, bearing is located on impeller shaft successively, described labyrinth seal seat, seal ring, packing ring, the first back-up ring, machine envelope stationary seat, wavy spring, machine is sealed seal ring, the first seal ring, the second back-up ring, be located in end cap, described end cap is wrapped in the impeller shaft periphery, and with the bearing adjacency.
Further, be provided with the cylindrical shape closed chamber of all grooves of several rings in the inwall of described labyrinth seal seat, described seal ring is located in the gap of groove, and described packing ring is located between labyrinth seal seat and seal ring, and described the first back-up ring is located at the opening of the closed chamber of labyrinth seal seat.
Further, described machine envelope stationary seat is provided with the cylindrical shape closed chamber, be provided with wavy spring in the closed chamber of described machine envelope stationary seat, machine is sealed seal ring and the first seal ring, described wavy spring is between the bottom and mechanical seal ring of the closed chamber of machine envelope stationary seat, be provided with the first seal ring between one side that described mechanical seal ring contacts with impeller shaft with the closed chamber of machine envelope stationary seat, described machine is sealed seal ring and machine envelope rotating ring adjacency, between one side that the closed chamber of described machine envelope stationary seat does not contact with impeller shaft and machine envelope rotating ring, is provided with the second back-up ring.
Further, between described machine envelope rotating ring and impeller shaft, be provided with the second seal ring, described machine envelope rotating ring and bearing adjacency.
The beneficial effects of the utility model:
Can isolate the pollution that fuel tank is not subject to the flow process medium fully, be applicable to the pump up water steam, occasion when chemical gases and organic vapor, have wide accommodation, can effectively tackle and process the very high occasion of gas requirement.
The accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Reference character:
Embodiment
Below in conjunction with specific embodiment, the utility model is done to progressive explanation.Should be understood that following examples are only for the utility model is described but not for limiting scope of the present utility model.
Embodiment 1
Fig. 1 is sectional view of the present utility model, as shown in Figure 1.A kind of interior shaft seal of Roots pump comprises: labyrinth seal seat 100, seal ring 200, packing ring 300, the first back-up ring 400, machine envelope stationary seat 500, wavy spring 510, machine are sealed seal ring 520, the first seal ring 530, machine envelope rotating ring 600, the second back-up ring 700, the second seal ring 610, bearing 800 and end cap 900.Labyrinth seal seat 100, seal ring 200, packing ring 300, the first back-up ring 400, machine envelope stationary seat 500, wavy spring 510, machine are sealed seal ring 520, the first seal ring 530, machine envelope rotating ring 600, the second back-up ring 700, the second seal ring 610, bearing 800 and are located on successively on impeller shaft 1000.Labyrinth seal seat 100, seal ring 200, packing ring 300, the first back-up ring 400, machine envelope stationary seat 500, wavy spring 510, machine are sealed seal ring 520, the first seal ring 530, the second back-up ring 700 and are located in end cap 900, end cap 900 is wrapped in impeller shaft 1000 peripheries, and with bearing 800 adjacency, coordinate and play seal action with inner Sealing parts, prevent that dust and foreign matter from entering simultaneously.
Wherein, labyrinth seal seat 100 is comprised of the thin slice of a lot of sheet fluoroplastic materials, with impeller shaft 1000, contacts with each other.Being provided with the cylindrical shape closed chamber of all grooves of several rings in the inwall of labyrinth seal seat 100, is 6 grooves in the present embodiment, and seal ring 200 is located in the gap of groove, and fits tightly in groove.Packing ring 300 is located between the groove inwall and seal ring 200 of labyrinth seal seat 100, has played the effect of buffering.The first back-up ring 400 is located at the opening of the closed chamber of labyrinth seal seat 100, and seal ring 200 and packing ring 300 are fixed in labyrinth seal seat 100, prevents that it is loosening.Although this structure can not seal fully and have a small amount of leakage gas, he can stop that the dust granule carried in process gas touches mechanical seal.Can in middle separate space, be filled with nitrogen formation sealing gland if needed and come isolation technology gas not contaminated with the protection fuel tank, can well support sealing gland, only have the nitrogen of minute quantity to enter in pump chamber.
Machine envelope stationary seat 500 is provided with the cylindrical shape closed chamber, be provided with wavy spring 510 in the closed chamber of machine envelope stationary seat 500, machine is sealed seal ring 520 and the first seal ring 530, wavy spring 510 is sealed between seal ring 520 at bottom and the machine of the closed chamber of machine envelope stationary seat 500, effectively reduce noise, reduce vibration.Machine is sealed between one side that the closed chamber of seal ring 520 and machine envelope stationary seat 500 contacts with impeller shaft 1000 and is provided with the first seal ring 530, prevents that lubricant oil from spilling and the foreign object intrusion.Machine is sealed seal ring 520 and machine envelope rotating ring 600 adjacency, between it, has very smooth surface of contact can make gas can not leak, and also scribbles oil film on sealing surface, can take away the fricative heat of surface of contact.Be provided with the second back-up ring 700 between one side that the closed chamber of machine envelope stationary seat 500 does not contact with impeller shaft 1000 and machine envelope rotating ring 600, prevent that part is loosening.The material of machine envelope rotating ring 600 is cemented carbide and fluororubber O-type ring, and the material of machine envelope stationary seat 500 is 316 Stainless Steel Cases, and the material that machine is sealed seal ring 520 is graphite and fluororubber O-type ring.
Be provided with the second seal ring 610 between machine envelope rotating ring 600 and impeller shaft 1000, prevent that lubricant oil from spilling and foreign object is invaded, machine envelope rotating ring 600 and bearing 800 adjacency, bearing 800 supports the fixing of whole interior shaft seal parts, and can make impeller shaft 1000 move smoothly.
Above embodiment of the present utility model is illustrated, but the utility model is as limit, only otherwise break away from aim of the present utility model, the utility model can also have various variations.
Claims (4)
1. the interior shaft seal of a Roots pump, is characterized in that, comprising: labyrinth seal seat (100), seal ring (200), packing ring (300), the first back-up ring (400), machine envelope stationary seat (500), wavy spring (510), machine is sealed seal ring (520), the first seal ring (530), machine envelope rotating ring (600), the second back-up ring (700), the second seal ring (610), bearing (800) and end cap (900), described labyrinth seal seat (100), seal ring (200), packing ring (300), the first back-up ring (400), machine envelope stationary seat (500), wavy spring (510), machine is sealed seal ring (520), the first seal ring (530), machine envelope rotating ring (600), the second back-up ring (700), the second seal ring (610), it is upper that bearing (800) is located on impeller shaft (1000) successively, described labyrinth seal seat (100), seal ring (200), packing ring (300), the first back-up ring (400), machine envelope stationary seat (500), wavy spring (510), machine is sealed seal ring (520), the first seal ring (530), the second back-up ring (700), be located in end cap (900), described end cap (900) is wrapped in impeller shaft (1000) periphery, and with bearing (800) adjacency.
2. the interior shaft seal of a kind of Roots pump according to claim 1, it is characterized in that: the cylindrical shape closed chamber that is provided with all grooves of a plurality of rings in the inwall of described labyrinth seal seat (100), described seal ring (200) is located in the gap of groove, described packing ring (300) is located between labyrinth seal seat (100) and seal ring (200), and described the first back-up ring (400) is located at the opening of the closed chamber of labyrinth seal seat (100).
3. the interior shaft seal of a kind of Roots pump according to claim 1, it is characterized in that: described machine envelope stationary seat (500) is provided with the cylindrical shape closed chamber, be provided with wavy spring (510) in the closed chamber of described machine envelope stationary seat (500), machine is sealed seal ring (520) and the first seal ring (530), bottom and machine that described wavy spring (510) is positioned at the closed chamber of machine envelope stationary seat (500) are sealed between seal ring (520), be provided with the first seal ring (530) between one side that described mechanical seal ring (520) contacts with the closed chamber of machine envelope stationary seat (500), described machine is sealed seal ring (520) and machine envelope rotating ring (600) adjacency, one side that the closed chamber of described machine envelope stationary seat (500) does not contact with impeller shaft (1000) and machine seal between rotating ring (600) and are provided with the second back-up ring (700).
4. the interior shaft seal of a kind of Roots pump according to claim 1, is characterized in that: between described machine envelope rotating ring (600) and impeller shaft (1000), be provided with the second seal ring (610), described machine envelope rotating ring (600) and bearing (800) adjacency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296752 CN203348085U (en) | 2013-05-28 | 2013-05-28 | Inner shaft seal of Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296752 CN203348085U (en) | 2013-05-28 | 2013-05-28 | Inner shaft seal of Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348085U true CN203348085U (en) | 2013-12-18 |
Family
ID=49747993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320296752 Expired - Fee Related CN203348085U (en) | 2013-05-28 | 2013-05-28 | Inner shaft seal of Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348085U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882593A (en) * | 2019-03-25 | 2019-06-14 | 江苏丰尚智能科技有限公司 | A kind of adjustable pressure double-sided compression sealing device |
| CN112780562A (en) * | 2021-01-06 | 2021-05-11 | 北京卫星制造厂有限公司 | Circulation pump body and positive displacement reaction gas circulation pump device for fuel cell |
-
2013
- 2013-05-28 CN CN 201320296752 patent/CN203348085U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882593A (en) * | 2019-03-25 | 2019-06-14 | 江苏丰尚智能科技有限公司 | A kind of adjustable pressure double-sided compression sealing device |
| CN112780562A (en) * | 2021-01-06 | 2021-05-11 | 北京卫星制造厂有限公司 | Circulation pump body and positive displacement reaction gas circulation pump device for fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131218 Termination date: 20170528 |