CN1089875C - Liquid-working-medium self-filling sealing method - Google Patents
Liquid-working-medium self-filling sealing method Download PDFInfo
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- CN1089875C CN1089875C CN96120690A CN96120690A CN1089875C CN 1089875 C CN1089875 C CN 1089875C CN 96120690 A CN96120690 A CN 96120690A CN 96120690 A CN96120690 A CN 96120690A CN 1089875 C CN1089875 C CN 1089875C
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- medium
- working
- liquid
- sealing
- supply system
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- 238000007789 sealing Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 210000000416 exudates and transudate Anatomy 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000013064 chemical raw material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 206010063045 Effusion Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The present invention relates to a liquid working medium self-filling sealing method which is realized by adopting a special device composed of main sealing surfaces, a sealing chamber coating the main sealing surface, auxiliary sealing surfaces, a medium supply system communicated with the sealing chamber, and a seeped medium collector, wherein the main sealing surfaces and the auxiliary sealing surfaces are two pairs of sealing surfaces forming a clearance fit, and working mediums in the sealing chamber completely coat the sealing surfaces; working mediums seeped out from the auxiliary sealing surfaces are collected and discharged by the seeped medium collector, the sealing chamber is communicated with the medium supply system, and the medium supply system is used for supplying working mediums to ensure that the sealing chamber is fully filled with working mediums. No direct friction exists among the sealing surfaces, so that the method of the present invention has the advantages of reliable seal, convenient maintenance and long service life.
Description
Technical field the present invention relates to the liquid-working-medium dynamic sealing method, a kind ofly specifically with working medium self-filling sealing is carried out at the position of needs sealings, makes the material of leakage be the encapsulating method of working medium.
Background technique motive sealing in machinery and scientific experimentation instrument has its crucial status, conventional encapsulating method as: packing seal, seal ring sealing etc. all exist the friction power consumption big, wear out failure, the life-span such as lacks at problem.
Summary of the invention the purpose of this invention is to provide a kind of liquid-working-medium self-filling sealing method, has reliable operation, does not have directly wearing and tearing, no stuffing box packing, and long lifetime and characteristics such as simple in structure are with a wide range of applications.
The object of the present invention is achieved like this:
A kind of liquid-working-medium self-filling sealing method is applied to such as centrifugal pump, use occasions such as vacuum pump, and described method comprises:
A, an isolated plant, this installs mainly by primary sealing area, coats the closed chamber of primary sealing area, secondary sealing area, the medium supply system that is connected with closed chamber oozes out the medium collection device and forms;
B, primary sealing area and secondary sealing area are the sealing surface of two pairs of Spielpassung, working medium in the closed chamber coats sealing surface fully, and makes between two pairs of sealing surfaces and be full of working medium, and the seepage between the sealing surface is working medium, prevent gas leap up into, thereby formed sealing to sealing surface;
C, the working medium that outwards oozed out by secondary sealing area collect and discharge by oozing out the medium collection device, and closed chamber is connected with the medium supply system, and supplies with working medium by the medium supply system, is full of working medium in the assurance closed chamber.
During enforcement, described primary sealing area (2) secondary sealing area (4) is the sealing surface of two pairs of Spielpassung, contain working medium in the medium supply system (5) and be communicated with closed chamber (3), make working medium be full of closed chamber (3), formation is to the coating of primary sealing area (2) and secondary sealing area (4), and make in primary sealing area (2) and sealing surface (4) gap separately and be full of working medium, ooze out medium collection device (6) and be provided with liquid port (7) and will draw by the working medium that secondary sealing area is discharged.
Described sealing surface can be an anchor ring, the surface of plane or other shape.
Described medium supply system can adopt multi-form, as: liquid tank, pump, methods such as pipeline.
Described liquid-working-medium can be liquid such as water, oil, chemical raw material.
This by closed chamber, sealing surface and medium supply system, ooze out the working-medium self-filling sealing that parts such as medium collection device are formed, by pipeline working medium is full of closed chamber by the medium supply system, working medium coats sealing surface fully, and the gap between two relative motion surface of filling primary sealing area, all effusions are working medium, thereby prevented the suction or the seepage of gas reliably, collected discharge by oozing out the medium collection device by the working medium that secondary sealing area outwards oozes out.
During enforcement,,, also can prevent to reveal in the mode that secondary sealing area adds seal ring as strong acid and strong base to not allowing the working medium of leakage.
The present invention has following beneficial effect:
1, reliable operation because all seepages are working medium, therefore can guarantee sealing effect, and the method for filling sealing voluntarily need not filler, the destruction that do not have wearing and tearing, therefore can not produce the working state that causes owing to seal fails
2. simple in structure, compare with packing seal or other seal form that it is simple in structure, and maintenance is very easy with maintenance
3, the long lifetime owing to there are not directly wearing and tearing between the sealing surface, can prolong its working life greatly, even the problem of seal failure is strengthened, also can not produce in sealing surface natural wastage gap.
4. increase work efficiency, owing to eliminated friction power loss between stuffing box packing and main shaft, the transmission efficiency height, energy-conservation.
5. of many uses since on make the medium self-filling sealing and have above characteristics, its purposes is very extensive, as at centrifugal pump, uses on the equipment such as vacuum pump and all can obtain effect preferably.Description of drawings is existing with preferred embodiment in conjunction with the accompanying drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the present invention is applied to the embodiment's schematic representation on the liquid-ring vacuum pump
Fig. 3 is embodiment's schematic representation that the present invention is applied to centrifugal pump
Embodiment sealing method for self-filling working of the present invention, basic structure as shown in Figure 1
Main shaft (1) passes and oozes out medium collection device (6), secondary sealing area (4) closed chamber (3) and primary sealing area (2), between main shaft (1) and primary sealing area (2), the secondary sealing area (4) for being slidingly matched, contain working medium in the medium supply system (5) and be communicated with closed chamber (3), make working medium be full of closed chamber (3), formation is to the coating of main shaft (1) and make primary sealing area (2) and secondary sealing area (4) is full of working medium, ooze out medium collection device (6) and be provided with liquid port (7), will draw by the working medium that secondary sealing area is discharged
Described working medium can be water, oil during enforcement, fluid chemical raw material and other liquid.
Because working medium makes all infiltrations and leakage on the primary sealing area (2) be working medium to the coating of primary sealing area (2), thereby realized sealing, the working medium that is leaked by secondary sealing area (4) is located to be collected the back and is discharged by exhaust port (7) oozing out medium collection device (6).
The embodiment of the present invention on liquid-ring vacuum pump as shown in Figure 2.
Main shaft (1) enters the pump housing (8) and impeller (9) is housed in the end behind the working-medium self-filling sealing that passes as shown in Figure 1, under the suction function in the pump housing (8), working medium infiltrates from primary sealing area (2), the working medium that infiltrates has formed liquid film between the pump housing (8) and impeller, be equivalent between each blade of impeller and the pump housing, form working-medium self-filling sealing again, formed the sealing between the impeller (9) and the pump housing (8).
The present invention be applied on the centrifugal pump embodiment as shown in Figure 3.
Main shaft (1) rotates under the support of bearing unit (14), main shaft (1) enters pump case (8) and locates to be provided with a closed chamber (3), impeller (9) is installed on main shaft (1) end, pump case (8) is provided with liquid entering hole (10) and liquid outlet (11), liquid outlet (11) has been located pipeline (12), valve (13) is communicated with closed chamber (3), when main shaft (1) impeller (9) is rotated, liquid in the pump case (8) is discharged from liquid outlet (11) under action of centrifugal force, form negative pressure in the pump case (8), the liquid that the moving liquid entering hole (10) of suction is located enters pump case (8), form continuous operation, the liquid part that liquid outlet (11) is located is introduced closed chamber (3) by pipeline (12) through valve (13) and is made full of liquid in the closed chamber (3), main shaft (1) is entered pump case (8) to be located to be coated by liquid, thereby prevented the air-breathing of gas, reach the purpose of sealing, described pipeline (12) locates to be provided with valve (13), enter the amount of closed chamber (3) liquid in order to adjustment, make it both guarantee closed chamber (3) full of liquid, do not cause too much loss again.
On the basis of above-mentioned working principle, can carry out deformation design adapting to different requirements, as:
(1) sealing surface can be an anchor ring, the surface of plane or other shape.
(2) sealing surface, closed chamber and other parts can adopt different materials as stainless steel, macromolecular material and other material as required.
(3) the medium supply system can adopt multi-form, as: modes such as liquid tank, pump, pipeline guarantee to be full of in the closed chamber working medium
What (four) ooze out that the medium collection device collects oozes out the recyclable or discharging of medium.
(5) working medium can be liquid such as water, oil, chemical raw material.
Claims (2)
1. a liquid-working-medium self-filling sealing method is applied to such as centrifugal pump, and inner chambers such as vacuum pump have the working machine of liquid-working-medium, it is characterized in that: described method comprises
A. be provided with the main two groups of sealing surfaces of paying between the movement parts of working machine and the non-movement parts, fill the own liquid-working-medium of working machine in the space that this two sealing surface is formed with Spielpassung by movement parts and non-movement parts and constitute, this primary sealing area one end is communicated with the inner chamber that liquid-working-medium is arranged of working machine, this two sealing surfaces gap is communicated with a closed chamber, the sealing chamber is communicated with the medium supply system, the medium collection device is oozed out in this supply system connection, this medium collection device is arranged at the liquid of paying sealing surface and oozes out the position and liquid body exudate is all collected the filling certainly of realization seal fluid;
B. liquid in liquid in described master, pair sealing surface gap and closed chamber, supply system, the medium collection device and the liquid in the working machine are the same liquid-working-medium that is interconnected.
2. liquid-working-medium self-filling sealing method as claimed in claim 1 is characterized in that:
The movement parts of described working machine is main shaft (1), non-movement parts is a housing, described primary sealing area (2), secondary sealing area (4) are the sealing surface of two groups of Spielpassung, contain working medium in the medium supply system (5) and be communicated with closed chamber (3), make working medium be full of closed chamber (3), formation is to the coating of primary sealing area (2) and secondary sealing area (4), and make in primary sealing area (2) and sealing surface (4) gap separately and be full of working medium, ooze out medium collection device (6) and be provided with liquid port (7) and will draw by the working medium that secondary sealing area (4) is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120690A CN1089875C (en) | 1996-11-21 | 1996-11-21 | Liquid-working-medium self-filling sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120690A CN1089875C (en) | 1996-11-21 | 1996-11-21 | Liquid-working-medium self-filling sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177686A CN1177686A (en) | 1998-04-01 |
| CN1089875C true CN1089875C (en) | 2002-08-28 |
Family
ID=5126513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120690A Expired - Fee Related CN1089875C (en) | 1996-11-21 | 1996-11-21 | Liquid-working-medium self-filling sealing method |
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| Country | Link |
|---|---|
| CN (1) | CN1089875C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086936B (en) * | 2009-12-08 | 2013-06-19 | 张意立 | Novel matching device with improved fluid sealing structure |
| CN106181532B (en) * | 2015-04-29 | 2018-11-09 | 无锡博华机电有限公司 | Central water outlet automatic tool changing electrical spindle negative pressure dehumidifier protection against leakage structure |
| JP6086415B1 (en) | 2016-06-22 | 2017-03-01 | 株式会社ニチリン | SEALING DEVICE, RUBBER HOSE CONTINUOUS VULCANIZING DEVICE INCLUDING THE SAME, AND SEALING METHOD AND RUBBER HOSE CONTINUOUS VULCANIZING METHOD |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205750U (en) * | 1987-04-02 | 1988-01-27 | 许建中 | Liquid pressure increased sealing structure |
-
1996
- 1996-11-21 CN CN96120690A patent/CN1089875C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205750U (en) * | 1987-04-02 | 1988-01-27 | 许建中 | Liquid pressure increased sealing structure |
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| Publication number | Publication date |
|---|---|
| CN1177686A (en) | 1998-04-01 |
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