CN2040964U - Bernoulli sealing device - Google Patents
Bernoulli sealing device Download PDFInfo
- Publication number
- CN2040964U CN2040964U CN 88220038 CN88220038U CN2040964U CN 2040964 U CN2040964 U CN 2040964U CN 88220038 CN88220038 CN 88220038 CN 88220038 U CN88220038 U CN 88220038U CN 2040964 U CN2040964 U CN 2040964U
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- CN
- China
- Prior art keywords
- sealing
- fluid pump
- rotating shaft
- sealing case
- utility
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- 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.)
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- Mechanical Sealing (AREA)
Abstract
A Bernoulli sealing device of the utility model relates to a mechanical moving sealing device which is arranged on the turning shaft of a rotary fluid pump to prevent the fluid leaking in the pump body. The sealing pieces of the utility model are designed according to the Bernoulli principle, and the inside and outside walls of the sealing pieces in column shapes are respectively be opened with circular decompression tanks and a plurality of circular pressurization tanks, while the circular decompression tanks and the circular pressurization tanks are communicated via capillary pipes, and then communicated with the low pressure point in the pump body through a back flow bore on a sealing box. The utility model has the advantages of simple structure, easy fabrication, long service life, good tightness, and the requirements to the cleanliness of the sealing pieces is not high, and thus, the utility model ca be widely used as the mechanical moving sealing devices of the various rotary fluid pumps.
Description
The utility model relates to a kind of mechanical dynamic seal device to prevent that the pump housing inner fluid from leaking in the rotating shaft of rotary fluid pump that is installed in.
In the prior art, the mechanical dynamic seal device of rotary fluid pump generally is made up of sealing case, Sealing and sealing lid.Sealing case is a cylindrical shape, is sleeved on the periphery of fluid pump rotating shaft, and the one end and the fluid pump housing link together, and the other end is an opening.Sealing generally comprises stationary ring and rotating ring two-part; Stationary ring is the graphite grazing pad, is sleeved in the rotating shaft of sealing case fluid pump and with the sealing case bottom to be fixed together; Rotating ring is the alloy sealing gasket, is fixed together with the fluid pump shaft by spring and spring seat and also can rotates with the fluid pump shaft, and spring compressing rotating ring closely contacts to reach the purpose of sealing with stationary ring.The sealing lid is sleeved in the fluid pump rotating shaft of sealing case opening end and with the sealing case opening end and seals.The mechanical dynamic seal Unit Installation of this structure and debugging are very complicated, must make the alloy sealing gasket evenly stressed, otherwise will cause the wearing and tearing of graphite grazing pad and alloy sealing gasket.Simultaneously, very high to the cleanliness requirement of Sealing, any tiny impurity all may make graphite grazing get existing groove mark discard and influence the effect of motive sealing and the working life of Sealing.
The purpose of this utility model is to design a kind of simple in structure, and Installation and Debugging are convenient, the mechanical dynamic seal device of good seal performance, long service life.
To achieve these goals, the utility model adopts according to the Bernoulli's Sealing that does not have the grinding-in plane of the bernoulli principle design Sealing as the mechanical dynamic seal device, to simplify the Installation and Debugging of seal arrangement, improve sealability, increase the service life.Be described in further detail below in conjunction with the technical characteristics of specific embodiment the utility model Bernoulli seal arrangement.
Fig. 1 is the structural representation of Bernoulli's seal arrangement;
Fig. 2 is the sectional elevation of Sealing.
With reference to figure 1,2, Bernoulli's seal arrangement is made up of sealing case 1, Sealing 2 and sealing lid 3.Sealing case 1 is a cylindrical shape, is sleeved on the periphery of fluid pump rotating shaft 4, and the one end and the fluid pump housing 5 link together, and the other end is an opening, has the return port 6 of low pressure point in a communication seals box inner chamber and the fluid pump on the sealing case wall.Sealing 2 is cylindrical, is sleeved in the fluid pump rotating shaft in the sealing case, and its outer wall and the stationary fit of sealing case inwall, the aperture of its central shaft hole is greater than the fluid pump rotating shaft diameter of axle, and its actual axial play should be selected according to fluid parameter.Have a ring decompression groove 7 that communicates with return port on the sealing case wall on the outer wall of Sealing, at least have 2 annular supercharging grooves 8 parallel to each other and equally distributed on the inwall of Sealing, at least have the capillary tube 9 of 2 size identical and equally distributed connection supercharging grooves and decompressing groove on each annular supercharging groove plane, quantity capillaceous and caliber are determined by fluid parameter.At least have 2 equally distributed annular oil grooves 10 parallel to each other and annular oil groove 11 on the two ends inwall of Sealing.Sealing lid 3 is sleeved in the fluid pump rotating shaft of sealing case opening end so that sealing case opening end sealing and Sealing 2 compressed.During installation, at first be enclosed within Sealing 2 in the fluid pump rotating shaft 4 and push in the sealing case 1, will seal lid 3 then and tighten, can reach the purpose of sealing.
The utility model is simple in structure, and installation and debugging are very convenient. Owing to there is not the grinding-in plane, thus less demanding and not fragile to the cleanliness factor of seal, thereby good seal performance, long service life. The utility model can be widely used in the mechanical dynamic seal of various rotary fluid pumps.
Claims (1)
1, a kind of being installed in the rotating shaft of rotary fluid pump to prevent the mechanical dynamic seal device of pump housing inner fluid leakage, form by sealing case, Sealing and sealing lid, described sealing case is a cylindrical shape, be sleeved on the periphery of fluid pump rotating shaft, one end and fluid pump link together, and the other end is an opening; In the fluid pump rotating shaft of described sealing member sheathing in sealing case, the sealing lid is sleeved in the fluid pump rotating shaft of sealing case opening end and with the sealing case opening end and seals; The return port that has interior low pressure point of a communication of fluid pump and sealing case inner chamber on the described sealing case wall that is characterised in that of the present utility model; Described Sealing is cylindrical, the aperture of its central shaft hole is greater than the fluid pump rotating shaft diameter of axle, the outer wall of Sealing and sealing case inwall are stationary fit, a ring decompression groove that communicates with return port on the sealing case wall is arranged on the outer wall of Sealing, at least have 2 annular supercharging grooves parallel to each other and equally distributed on the inwall of Sealing, at least have the capillary tube of 2 size identical and equally distributed connection supercharging grooves and decompressing groove on each annular supercharging groove plane, have 2 annular oil grooves parallel to each other and equally distributed on the two ends inwall of Sealing at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220038 CN2040964U (en) | 1988-11-23 | 1988-11-23 | Bernoulli sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220038 CN2040964U (en) | 1988-11-23 | 1988-11-23 | Bernoulli sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2040964U true CN2040964U (en) | 1989-07-12 |
Family
ID=4852333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88220038 Withdrawn CN2040964U (en) | 1988-11-23 | 1988-11-23 | Bernoulli sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2040964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644334B (en) * | 2008-08-06 | 2011-04-06 | 中国科学院工程热物理研究所 | Non-contact hydrodynamic bearing sealing ring |
| CN101762359B (en) * | 2009-11-27 | 2012-02-08 | 哈尔滨电机厂有限责任公司 | Inside oil baffle structure of bearing bush machine for dynamic balance test of rotor of large turbo-type generator |
| CN109333077A (en) * | 2018-10-10 | 2019-02-15 | 西安理工大学 | The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type |
-
1988
- 1988-11-23 CN CN 88220038 patent/CN2040964U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644334B (en) * | 2008-08-06 | 2011-04-06 | 中国科学院工程热物理研究所 | Non-contact hydrodynamic bearing sealing ring |
| CN101762359B (en) * | 2009-11-27 | 2012-02-08 | 哈尔滨电机厂有限责任公司 | Inside oil baffle structure of bearing bush machine for dynamic balance test of rotor of large turbo-type generator |
| CN109333077A (en) * | 2018-10-10 | 2019-02-15 | 西安理工大学 | The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |