CN105276194A - Mechanical sealing device for multi-stage pump - Google Patents
Mechanical sealing device for multi-stage pump Download PDFInfo
- Publication number
- CN105276194A CN105276194A CN201510673431.9A CN201510673431A CN105276194A CN 105276194 A CN105276194 A CN 105276194A CN 201510673431 A CN201510673431 A CN 201510673431A CN 105276194 A CN105276194 A CN 105276194A
- Authority
- CN
- China
- Prior art keywords
- ring
- retainer
- rotating ring
- sealing device
- face seal
- 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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Abstract
The invention discloses a mechanical sealing device for a multi-stage pump. The mechanical sealing device comprises a box body. A cooling water inlet and outlet opening is formed in the box body. A shaft sleeve is arranged on the outer circle of a pump shaft. A first transmission seat is arranged at the position, close to the left end, of the outer circle of the shaft sleeve and is fixed to the shaft sleeve through a headless screw. An O-shaped ring is arranged between a protruding block extending rightwards of the first transmission seat and a groove in a first movable ring. The first transmission seat is connected with the first movable ring through a transmission pin B. An end face seal is arranged on the right end face of the first movable ring. A second transmission seat is arranged at the right end of the shaft sleeve and is connected with a second movable ring through a transmission pin A. An end face seal is arranged on the left end face of the second movable ring. Grooves are formed in a first static ring and a second static ring, and springs are arranged on the end faces of the two grooves. The two springs are connected through a spring pillar. End seals are arranged at the outer end of the first static ring and the outer end of the second static ring. The mechanical sealing device is simple in structure and reasonable in design, all the springs can axially float along with a rotating shaft, and the service life of the sealing device is prolonged.
Description
Technical field
The present invention relates to a kind of mechanical seal device, refer more particularly to a kind of mechanical seal device on multistage pump.
Background technique
At present, be widely used in the mechanical seal device on various multistage pump, for single sealing surface structure, when rotating shaft produces axial float, if towards stationary ring one side play, the scope of its bit shift compensation is exactly contractile scope after spring pressurized, when exceeding this scope, generation sealed cover ratio pressure increases, and the long-term over range pressurized of spring easily causes inefficacy; If towards rotating ring one side play, because stationary ring can not move with rotating shaft, cause rotating ring to be separated with stationary ring, produce and reveal, therefore this mechanical seal device cannot with rotating shaft at axial free play.
Summary of the invention
The object of the invention is to solve above-mentioned Problems existing.
The present invention is achieved in that a kind of mechanical seal device for pump of multilevel, comprise pump shaft, casing, first rotating ring, second rotating ring, first stationary ring, second stationary ring, described casing is provided with cooling water outlet and inlet, pump shaft cylindrical is provided with axle sleeve, it is characterized in that: axle sleeve is provided with the first retainer near left end cylindrical, first retainer is fixed by headless screw and axle sleeve, O type circle is provided with to the right between the groove of the projection that the first retainer extends and the first rotating ring, be connected by driving pin B between first retainer with the first rotating ring, first rotating ring right side is provided with end face seal, described axle sleeve right-hand member is provided with the second retainer, and the second retainer is connected with the second rotating ring by driving pin A, and the second rotating ring left side is provided with end face seal, the first described stationary ring and the second stationary ring are provided with groove, and two groove end faces are provided with spring, and two springs are connected by spring stack, and the first described stationary ring and the second stationary ring outer end are provided with end face seal.
Further, the material that described end face seal adopts is graphite.
Structure of the present invention is simple, reasonable in design, and spring all can be overall with rotating shaft axial float, extends the working life of seal arrangement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1, the first retainer, 101, projection, 2, headless screw, 3, axle sleeve, the 4, first rotating ring, the 5, first stationary ring, 6, spring, 7, spring stack, the 8, second stationary ring, 9, the second rotating ring, 10, pump shaft, the 11, second retainer, 12, driving pin B, 13, casing, 14, cooling water outlet and inlet, 15, end face seal, 16, driving pin B.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to accompanying drawing, a kind of mechanical seal device for pump of multilevel, comprise pump shaft 10, casing 13, first rotating ring 4, second rotating ring 9, first stationary ring 5, second stationary ring 8, described casing 13 is provided with cooling water outlet and inlet 14, pump shaft 10 cylindrical is provided with axle sleeve 3, it is characterized in that: axle sleeve 3 is provided with the first retainer 1 near left end cylindrical, first retainer 1 is fixed by headless screw 2 and axle sleeve 3, O type circle is provided with to the right between the projection 101 that first retainer 1 extends and the groove of the first rotating ring 4, be connected by driving pin B between first retainer 1 with the first rotating ring 4, first rotating ring 4 right side is provided with end face seal 15, described axle sleeve 3 right-hand member is provided with the second retainer 11, second retainer 11 and is connected with the second rotating ring 9, second rotating ring 9 left side by driving pin A and is provided with end face seal 15, the first described stationary ring and the second stationary ring are provided with groove, and two groove end faces are provided with spring 6, and two springs 6 are connected by spring stack 7, and the first described stationary ring 5 and the second stationary ring 8 outer end are provided with end face seal 15, the material that described end face seal 15 adopts is graphite.
During concrete enforcement, when rotating shaft produces axial float, no matter whichaway, spring all can be overall with rotating shaft axial float, the phenomenon of sealed cover ratio pressure increase or reduction and the long-term over range pressurized of spring can not be produced, thus extend the working life of sealing device.
The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; some improvements and modifications can also be made; these improvements and modifications also should be considered as protection scope of the present invention, and all available prior art of each constituent element not clear and definite in the present embodiment is realized.
Claims (2)
1. a mechanical seal device for pump of multilevel, comprise pump shaft (10), casing (13), first rotating ring (4), second rotating ring (9), first stationary ring (5), second stationary ring (8), described casing (13) is provided with cooling water outlet and inlet (14), pump shaft (10) cylindrical is provided with axle sleeve (3), it is characterized in that: axle sleeve (3) is provided with the first retainer (1) near left end cylindrical, first retainer (1) is fixed by headless screw (2) and axle sleeve (3), O type circle is provided with to the right between the projection (101) that first retainer (1) extends and the groove of the first rotating ring (4), by driving pin B(16 between first retainer (1) with the first rotating ring (4)) be connected, first rotating ring (4) right side is provided with end face seal (15), described axle sleeve (3) right-hand member is provided with the second retainer (11), and the second retainer (11) is by driving pin A(12) be connected with the second rotating ring (9), the second rotating ring (9) left side is provided with end face seal (15), the first described stationary ring and the second stationary ring are provided with groove, and two groove end faces are provided with spring (6), and two springs (6) are connected by spring stack (7), and described the first stationary ring (5) and the second stationary ring (8) outer end are provided with end face seal (15).
2. a kind of mechanical seal device for pump of multilevel according to claim 1, is characterized in that: the material that described end face seal (15) adopts is graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673431.9A CN105276194A (en) | 2015-10-19 | 2015-10-19 | Mechanical sealing device for multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673431.9A CN105276194A (en) | 2015-10-19 | 2015-10-19 | Mechanical sealing device for multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105276194A true CN105276194A (en) | 2016-01-27 |
Family
ID=55145722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510673431.9A Pending CN105276194A (en) | 2015-10-19 | 2015-10-19 | Mechanical sealing device for multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105276194A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985898Y (en) * | 2006-12-04 | 2007-12-05 | 颜铧 | Mechanical sealing device capable of freely scattering in axial direction used for multi-stage pump |
| CN201221492Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Double-end face mechanical seal device |
| CN201427038Y (en) * | 2009-06-30 | 2010-03-24 | 蒋敏 | Mechanical seal used for mixer of absorption tower |
| CN102678932A (en) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | Double mechanical seal without accessory system |
| CN204985044U (en) * | 2015-08-27 | 2016-01-20 | 江苏飞翔泵业制造有限公司 | Mechanical seal device for multistage pump |
-
2015
- 2015-10-19 CN CN201510673431.9A patent/CN105276194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985898Y (en) * | 2006-12-04 | 2007-12-05 | 颜铧 | Mechanical sealing device capable of freely scattering in axial direction used for multi-stage pump |
| CN201221492Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Double-end face mechanical seal device |
| CN201427038Y (en) * | 2009-06-30 | 2010-03-24 | 蒋敏 | Mechanical seal used for mixer of absorption tower |
| CN102678932A (en) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | Double mechanical seal without accessory system |
| CN204985044U (en) * | 2015-08-27 | 2016-01-20 | 江苏飞翔泵业制造有限公司 | Mechanical seal device for multistage pump |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |