CN102444718A - Combined mechanical seal - Google Patents
Combined mechanical seal Download PDFInfo
- Publication number
- CN102444718A CN102444718A CN201010507461XA CN201010507461A CN102444718A CN 102444718 A CN102444718 A CN 102444718A CN 201010507461X A CN201010507461X A CN 201010507461XA CN 201010507461 A CN201010507461 A CN 201010507461A CN 102444718 A CN102444718 A CN 102444718A
- Authority
- CN
- China
- Prior art keywords
- gland
- sealing
- seal
- housed
- axle sleeve
- 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.)
- Pending
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- Sealing Devices (AREA)
Abstract
The invention relates to a fluid combined mechanical seal, which comprises a front gland, a connecting screw, a gland packing, a middle gland, a sealing static ring, a sealing movable ring, a back gland, a spring, a push rod, a fastening screw, a shaft sleeve, sealing rings and the like, wherein the front gland is provided with a hole, and can be connected with a fixing piece required to be sealed, such as a pump body; the gland packing is arranged on the front gland, and is pressed by using the middle gland; the middle gland is connected with the front gland through the connecting screw; the middle gland is provided with a screw hole, and is provided with the sealing static ring; the back gland is provided with the sealing movable ring; the push block is provided with the fastening screw; the shaft sleeve and the back gland are provided with sealing rings respectively; the front gland, the middle gland, the back gland and the push block are arranged on the shaft sleeve; the gland packing arranged on the front gland is tightly contacted with the shaft sleeve under the compressional deformation action of the middle gland, so that primary seal is formed; the spring is arranged between the push block and the back gland; the push block is used for compressing the spring to compress the sealing movable ring and the sealing static ring, so that secondary seal is formed; the push block is fixed on the shaft sleeve through the fastening screw; combined seal is formed by the primary seal and the secondary seal; a cavity is formed among the gland packing, the middle gland, the back gland and the shaft sleeve; and a cooling liquid can be introduced through the screw hole on the middle gland for cooling and flushing impurities. Due to the adoption of the fluid combined mechanical seal, the sealing reliability is enhanced, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of fluid-tight, belong to a kind of combined machine sealing.
Technical background
In the machinery of process fluid, the sealing of running shaft is one sealing, when having impurity or temperature high in the fluid, seals inefficacy easy to wear.
Summary of the invention
Problem to be solved by this invention is to form first, second two seals with three glands, has cavity to be used for cooling and flushing impurity between the two seals.Improve sealing reliability, increase the service life.
The present invention solves its technical problem and adopts following technological scheme:
The present invention is made up of preceding gland, joint bolt, stuffing box packing, middle gland, stationary seal ring, sealing rotating ring, rear pressing cover, spring, pushing block, fastening screw trip bolt, axle sleeve, seal ring etc.Porose can the connection with the fixed block such as the pump housing of needs sealing on the gland, pushed down by middle gland before stuffing box packing is contained on the preceding gland, through joint bolt middle gland and preceding gland connected.Have screw on the middle gland, on the middle gland stationary seal ring is housed, the sealing rotating ring is housed on the rear pressing cover, fastening screw trip bolt is housed on the pushing block, seal ring is housed respectively on axle sleeve and the rear pressing cover.Preceding gland, middle gland, rear pressing cover, pushing block together are contained on the axle sleeve, and the stuffing box packing of gland closely contacts the sealing of formation first road through the extrusion-deformation of middle gland with axle sleeve before being contained in.Between pushing block and rear pressing cover, spring is housed, the pushing block pressure spring will seal rotating ring and stationary seal ring compresses the sealing of formation second road, and pushing block is fixed on the axle sleeve through fastening screw trip bolt, sealing of first road and second road sealing formation combination seal.Between stuffing box packing, middle gland, rear pressing cover and the axle sleeve cavity is arranged, can introduce cooling liquid through screw on the middle gland and cool off and wash impurity.Improve sealing reliability, increase the service life.
Description of drawings
Fig. 1 is a structural drawing of the present invention
Embodiment:
The present invention is made up of preceding gland 1, stuffing box packing 3, middle gland 4, joint bolt 5, stationary seal ring 7, sealing rotating ring 8, rear pressing cover 9, spring 10, seal ring 11, pushing block 12, fastening screw trip bolt 13, axle sleeve 14, seal ring 15 etc.Porose 2 can connect with the fixed block such as the pump housing of needs sealing on the preceding gland 1, on the gland 1, are pushed down by middle gland 4 before stuffing box packing 3 is contained in, and through joint bolt 13 middle gland 4 and preceding gland 1 are connected.Have screw 6 on the middle gland 4; On the middle gland 4 stationary seal ring 7 is housed; Sealing rotating ring 8 is housed on the rear pressing cover 9, fastening screw trip bolt 13 is housed on the pushing block 12, be equipped with on the axle sleeve 14 on seal ring 15 rear pressing covers 9 seal ring 11 is housed; Preceding gland 1, middle gland 4, rear pressing cover 9, pushing block 12 together are contained on the axle sleeve 14, and the stuffing box packing 3 of gland 1 closely contacts the sealing of formation first roads through the extrusion-deformation of middle gland 4 with axle sleeve 14 before being contained in.Between pushing block 12 and rear pressing cover 9, spring 10 is housed; Pushing block 12 pressure springs 10 will seal rotating ring 8 and compress the sealing of formation second road with stationary seal ring 7; Pushing block 12 is fixed on the axle sleeve 14 through fastening screw trip bolt 13, and the sealing of first road forms combination seal with the sealing of second road.Between stuffing box packing 3, middle gland 4, rear pressing cover 9 and the axle sleeve 14 cavity is arranged, can introduce cooling liquid through screw 6 on the middle gland 4 and cool off and wash impurity.Improve sealing reliability, increase the service life.
Claims (1)
1. combination of fluids mechanical seal.Form by preceding gland 1, stuffing box packing 3, middle gland 4, joint bolt 5, stationary seal ring 7, sealing rotating ring 8, rear pressing cover 9, spring 10, seal ring 11, pushing block 12, fastening screw trip bolt 13, axle sleeve 14, seal ring 15 etc.Porose 2 can connect with the fixed block such as the pump housing of needs sealing on the preceding gland 1, on the gland 1, are pushed down by middle gland 4 before stuffing box packing 3 is contained in, and through joint bolt 13 middle gland 4 and preceding gland 1 are connected.Have screw 6 on the middle gland 4; On the middle gland 4 stationary seal ring 7 is housed; Sealing rotating ring 8 is housed on the rear pressing cover 9, fastening screw trip bolt 13 is housed on the pushing block 12, seal ring 15 is housed on the axle sleeve 14; Glands 1 before the seal ring 11, middle gland 4, rear pressing cover 9, pushing block 12 are housed on the rear pressing cover 9 together are contained on the axle sleeve 14, the extrusion-deformation of the stuffing box packing 3 of gland 1 through middle gland 4 closely contacts formation first roads with axle sleeve 14 and seals before being contained in.Between pushing block 12 and rear pressing cover 9, spring 10 is housed; Pushing block 12 pressure springs 10 will seal rotating ring 8 and compress the sealing of formation second road with stationary seal ring 7; Pushing block 12 is fixed on the axle sleeve 14 through fastening screw trip bolt 13, and the sealing of first road forms combination seal with the sealing of second road.One cavity 16 is arranged between stuffing box packing 3, middle gland 4, rear pressing cover 9 and the axle sleeve 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010507461XA CN102444718A (en) | 2010-10-15 | 2010-10-15 | Combined mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010507461XA CN102444718A (en) | 2010-10-15 | 2010-10-15 | Combined mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102444718A true CN102444718A (en) | 2012-05-09 |
Family
ID=46007504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010507461XA Pending CN102444718A (en) | 2010-10-15 | 2010-10-15 | Combined mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102444718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821759A (en) * | 2014-03-06 | 2014-05-28 | 安徽嘉成泵业有限责任公司 | Cavity locking type zero-leakage shaft seal mechanism of slurry pump |
| CN107100883A (en) * | 2017-05-23 | 2017-08-29 | 孙海龙 | A kind of chemical centrifugal pump with shock-absorbing function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551790Y (en) * | 2002-06-08 | 2003-05-21 | 胡滨 | Combined sealer for sand digging pump |
| JP2007198417A (en) * | 2006-01-24 | 2007-08-09 | Sugiyama Juko Kk | Shaft sealing device |
| CN200958604Y (en) * | 2006-09-18 | 2007-10-10 | 丹东克隆集团有限责任公司 | Anti-block mechanical sealer |
| CN201284830Y (en) * | 2008-11-05 | 2009-08-05 | 自贡市红旗泵业密封件制造有限公司 | Combined mechanical sealing device |
-
2010
- 2010-10-15 CN CN201010507461XA patent/CN102444718A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551790Y (en) * | 2002-06-08 | 2003-05-21 | 胡滨 | Combined sealer for sand digging pump |
| JP2007198417A (en) * | 2006-01-24 | 2007-08-09 | Sugiyama Juko Kk | Shaft sealing device |
| CN200958604Y (en) * | 2006-09-18 | 2007-10-10 | 丹东克隆集团有限责任公司 | Anti-block mechanical sealer |
| CN201284830Y (en) * | 2008-11-05 | 2009-08-05 | 自贡市红旗泵业密封件制造有限公司 | Combined mechanical sealing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821759A (en) * | 2014-03-06 | 2014-05-28 | 安徽嘉成泵业有限责任公司 | Cavity locking type zero-leakage shaft seal mechanism of slurry pump |
| CN107100883A (en) * | 2017-05-23 | 2017-08-29 | 孙海龙 | A kind of chemical centrifugal pump with shock-absorbing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |