CN105526355A - Device used for mechanical sealing - Google Patents
Device used for mechanical sealing Download PDFInfo
- Publication number
- CN105526355A CN105526355A CN201510755169.2A CN201510755169A CN105526355A CN 105526355 A CN105526355 A CN 105526355A CN 201510755169 A CN201510755169 A CN 201510755169A CN 105526355 A CN105526355 A CN 105526355A
- Authority
- CN
- China
- Prior art keywords
- ring
- stationary
- rotating
- axle sleeve
- seat
- 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
Links
Landscapes
- Mechanical Sealing (AREA)
Abstract
The invention discloses a device used for mechanical sealing. The device used for mechanical sealing comprises a shaft sleeve (2) and a static ring base (3), wherein the shaft sleeve (2) is used for being installed on a rotating shaft (1), the static ring base (3) is used for being connected with an opening in mechanical equipment, the opening allows the rotating shaft (1) to penetrate through, and the static ring base (3) is connected to the shaft sleeve (2) in a sleeving mode. The device used for mechanical sealing further comprises a first static ring (4), a second static ring (5), a first movable ring (6), a second movable ring (7), a first movable ring base (8), a second movable ring base (9) and a compressed spring (10), and the first movable ring base (8) and the shaft sleeve (2) are integrally formed. According to the device used for mechanical sealing, the effect that the end faces of the movable rings and the end faces of the static rings are always kept in an attached mode under the condition that the rotating shaft rotates can be ensured.
Description
Technical field
The present invention relates to technical field of mechanical, particularly relate to a kind of device for mechanical seal.
Background technique
Mechanical seal refers to, at least one end face perpendicular to shaft axis keeps laminating and relative sliding and device that the anti-fluid that forms is leaked under the effect of hydrodynamic pressure and compensation mechanism elastic force and under the cooperation of auxiliary seal.Such as in the equipment such as centrifugal pump, centrifuge, reactor and compressor, because rotating shaft is applied in inside and outside aforementioned device, therefore, a circumferential clearance between rotating shaft and equipment, will be there is; When rotating shaft is rotated relative to equipment, the medium of device interior can by this circumferential clearance to external leakage; If the pressure of device interior is lower than barometric pressure, then air can flow in equipment, thus one just must be had to stop the seal arrangement leaked.Current existed a large amount of devices for mechanical seal, mostly by equipment is connected with stationary ring, rotating shaft is connected with rotating ring, be axially provided with spring to ensure that rotating ring end face and stationary ring end face are fitted at rotating ring and stationary ring, and rotating ring can rotates relative to stationary ring.But when rotating ring of the prior art is relative to stationary ring generation axial runout, rotating ring end face and stationary ring end face still can produce the axial clearance of moment, thus the medium in equipment will from this axial clearance to external leakage.That is, the existing device for mechanical seal cannot ensure that in axis of rotation situation rotating ring end face and stationary ring end face remain the state of laminating.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes existing technological deficiency, and rotating ring end face and stationary ring end face keep the device for mechanical seal of fit-state always to provide a kind of rotating shaft can guarantee under rotation situation.
Technical solution of the present invention is, there is provided a kind of device for mechanical seal with following structure: comprise for being arranged on the axle sleeve in rotating shaft and the stationary seat for being connected with the opening that machinery supplies rotating shaft to pass, stationary seat is socketed on axle sleeve, also comprises the first stationary ring, the second stationary ring, the first rotating ring, the second rotating ring, the first rotating seat, the second rotating seat and stage clip; The first described stationary ring is socketed on axle sleeve periphery wall, and the first stationary ring is slidably connected in stationary seat, and the first stationary ring is arranged on the one end near machinery inside on axle sleeve; Second stationary ring is socketed on axle sleeve periphery wall, and the second stationary ring is slidably connected in stationary seat, and the second stationary ring is arranged on the one end near machinery outside on axle sleeve; First rotating seat and axle sleeve one-body molded, and the first rotating seat is arranged on axle sleeve near one end of machinery inside; Second rotating seat is connected on axle sleeve periphery wall along axle sleeve axial direction is adjustable, and the second rotating seat is arranged on the one end near machinery outside on axle sleeve; First stationary ring and the second stationary ring are positioned at the first rotating seat and the second rotating seat axial clearance along axle sleeve axis; First rotating ring is inlaid in the first rotating seat, and the first rotating ring is positioned at the first rotating seat and the first stationary ring axial clearance along axle sleeve axis; Second rotating ring is inlaid in the second rotating seat, and the second rotating ring is positioned at the second rotating seat and the second stationary ring axial clearance along axle sleeve axis; First stationary ring is provided with the first annular protrusion for pushing against with the first rotating ring end face towards the first rotating ring one end face, the second stationary ring is provided with the second annular protrusion for pushing against with the second rotating ring end face towards the second rotating ring one end face; Compression spring sleeve is connected on axle sleeve periphery wall, and stage clip one end is connected with the first stationary ring to promote the first stationary ring end face and the first rotating ring end face pushes against, and the other end is connected with the second stationary ring to promote the second stationary ring end face and the second rotating ring end face pushes against.
Rotating shaft in the present invention when rotation work, the first stationary ring and the second stationary ring have under the effect of stage clip mutually away from trend, that is, the first stationary ring and the second stationary ring can push against with the first rotating ring and the second rotating ring end face respectively under stage clip effect, in addition, after assembling, stage clip is all compressed all the time, so stage clip just all can apply active force to the first stationary ring and the second stationary ring all the time, to make, the first stationary ring pushes against with the first rotating ring all the time, the second stationary ring pushes against with the second rotating ring all the time, even if rotating shaft and axle sleeve move axially relative to the opening of machinery, on the one hand, the first stationary ring and the second stationary ring relative to stationary seat generation relative movement, thus can keep the axial spacing between the first stationary ring and the second stationary ring, on the other hand, because rotating shaft and axle sleeve can have the impact force of a moment to stage clip when generation moves axially instantaneously, this impact force meeting compression press spring, thus make stage clip can apply a larger reaction force to the first stationary ring and the second stationary ring, and then make the first stationary ring and the first rotating ring, second stationary ring and the second rotating ring support compacter to prevent the medium in machinery from leaking, such as: when rotating shaft is mobile to machinery outside, first stationary ring can play the effect of extruding stage clip and promote the second stationary ring by the active force of stage clip and draw close to the second stationary ring and push against, i.e. extruded stage clip but also pressure can be acted on the first stationary ring and the second stationary ring, until the first stationary ring and the second stationary ring reach a new balance, when rotating shaft is mobile to machinery inside, second stationary ring can play the effect of extruding stage clip and promote the first stationary ring by the active force of stage clip and draw close to the first stationary ring and push against, i.e. extruded stage clip but also pressure can be acted on the first stationary ring and the second stationary ring, until the first stationary ring and the second stationary ring reach a new balance, wherein, first rotating seat and the one-body molded sealing that can improve the first rotating seat and axle sleeve joint of axle sleeve, can thoroughly prevent the medium in machinery from leaking from the joint of the first rotating seat and axle sleeve, and the first rotating seat can also play the effect of a positioning datum, the installation of the component such as the first follow-up rotating ring, the second rotating ring, the first stationary ring, the second stationary ring can be facilitated, in addition, the area that can reduce the first stationary ring and contact with the first rotating ring is set by the first annular protrusion, improves the sealing of the first stationary ring and the first rotating ring surface of contact, the area that can reduce the second stationary ring and contact with the second rotating ring is set by the second annular protrusion, improves the sealing of the second stationary ring and the second rotating ring surface of contact.Therefore, the invention provides a kind of rotating shaft and can guarantee that under rotation situation rotating ring end face and stationary ring end face keep the device for mechanical seal of fit-state always.
Preferred as one, the first described stationary ring is provided with the first ring film on the end face of machinery inside and stationary seat between the end face of machinery inside, and the outer ring of the first ring film is inlaid on stationary seat, and passes through screw in compression; The inner ring of the first ring film is inlaid on the first stationary ring, and passes through screw in compression; Second stationary ring is provided with the second ring film on the end face of machinery outside and stationary seat between the end face of machinery outside, and the outer ring of the second ring film is inlaid on stationary seat, and passes through screw in compression; The inner ring of the second ring film is inlaid on the first stationary ring, and passes through screw in compression.Preferred by this, when the first stationary ring and the second stationary ring move axially relative to stationary seat, the medium in machinery cannot be revealed from the surface of contact of the first stationary ring, the second stationary ring and stationary seat, improves the sealing effect of this mechanical seal.
Preferred as one, be provided with pressure ring between the first described ring film and screw, between the second ring film and screw, be provided with pressure ring.Preferred by this, the first ring film can be made can both to be pressed on stationary seat end face and the first stationary ring end face at whole circumferencial direction, first ring film is fully pushed against with the component that contact, avoid the first ring film to there is gap at circumferencial direction with the component end face that contacts, improve the sealing effect of the first ring film and the component that contact; Effect for the second ring film is also like this.
Preferred as one, the second described rotating seat refers to along adjustable being connected on axle sleeve periphery wall of axle sleeve axial direction, second rotating seat offers multiple through hole along axle sleeve radial direction, axle sleeve offers lock screw blind hole second rotating seat is connected with for screwing through through hole and blind hole.Preferred by this, the axial position of the second rotating seat relative to axle sleeve can be adjusted, thus the axial spacing played between adjustment first rotating seat and the second rotating seat, namely indirectly the axial spacing of the first stationary ring and the second stationary ring is adjusted, and then change the degree that stage clip is extruded distortion; That is, make stage clip larger for the pressure of the first stationary ring and the second stationary ring, make the first stationary ring and the first rotating ring, the second stationary ring and the second rotating ring compacter against ground, improve the sealing effect of this mechanical seal; More direct effect is exactly, and this mechanical seal entirety can be disassembled the sealing that just can adjust this mechanical seal from machinery, only needs directly at the axial position of adjustment the second rotating seat in machinery outside relative to axle sleeve.
Preferred as one, described stationary seat is less than simultaneously the external diameter of the first rotating seat and the second rotating seat for the diameter of bore of accommodating first stationary ring and the second stationary ring.Preferred by this, can prevent rotating shaft and axle sleeve the first rotating seat and the second rotating seat when being axially moved from passing from stationary seat, play a spacing effect, make stationary seat be in the axial spacing between the first rotating seat and the second rotating seat all the time, the phenomenon departed from can not occur.
Preferred as one, the first described stationary ring and the second stationary ring end are equipped with the annular groove for accommodating stage clip end.Preferred by this, stage clip two end part can be made to be embedded in annular groove, stage clip two end part are played to the effect of location, prevent the first stationary ring and the second stationary ring stage clip when moving axially from moving radially, improve the working stability of whole mechanical seal, also make whole mechanical seal structure compacter.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Fig. 2 is the phase diagram that in the present invention, the second stationary ring is stressed when acting on.
Fig. 3 is the structural representation of the first stationary ring in the present invention.
Fig. 4 is the structural representation of stationary seat in the present invention.
Shown in figure: 1, rotating shaft, 2, axle sleeve, 3, stationary seat, the 4, first stationary ring, 5, the second stationary ring, the 6, first rotating ring, the 7, second rotating ring, 8, the first rotating seat, the 9, second rotating seat, 10, stage clip, 11, the first ring film, the 12, second ring film, 13, screw, 14, through hole, 15, blind hole, 16, annular groove, 17, the first annular protrusion, the 18, second annular protrusion, 23, lock screw.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
The device that the present invention is used for mechanical seal comprises for being arranged on the axle sleeve 2 in rotating shaft 1 and the stationary seat 3 for being connected with the opening that machinery supplies rotating shaft 1 to pass, stationary seat 3 is socketed on axle sleeve 2, also comprises the first stationary ring 4, second stationary ring 5, first rotating ring 6, second rotating ring 7, first rotating seat 8, second rotating seat 9 and stage clip 10;
The first described stationary ring 4 is socketed on axle sleeve 2 periphery wall, and the first stationary ring 4 is slidably connected in stationary seat 3, and the first stationary ring 4 is arranged on the one end near machinery inside on axle sleeve 2; Second stationary ring 5 is socketed on axle sleeve 2 periphery wall, and the second stationary ring 5 is slidably connected in stationary seat 3, and the second stationary ring 5 is arranged on the one end near machinery outside on axle sleeve 2;
First rotating seat 8 is one-body molded with axle sleeve 2, and the first rotating seat 8 is arranged on the one end near machinery inside on axle sleeve 2, and one end of described close machinery inside refers to the end that rotating shaft 1 can come in contact with machinery interior media; Second rotating seat 9 is connected on axle sleeve 2 periphery wall along axle sleeve 2 axial direction is adjustable, and the second rotating seat 9 is arranged on the one end near machinery outside on axle sleeve 2, one end of described close machinery outside refers to the end that rotating shaft 1 can not come in contact with machinery interior media; First stationary ring 4 and the second stationary ring 5 are positioned at the first rotating seat 8 and the second rotating seat 9 axial clearance along axle sleeve 2 axis; The first described rotating seat 8 refers to axle sleeve 2 is one-body molded, just gives casting out the first rotating seat 8 at axle sleeve 2 when cast blank, and the first rotating seat 8 is connected as a single entity with axle sleeve 2.
First rotating ring 6 is inlaid in the first rotating seat 8, and the first rotating ring 6 is positioned at the first rotating seat 8 and the first stationary ring 4 axial clearance along axle sleeve 2 axis; Second rotating ring 7 is inlaid in the second rotating seat 9, and the second rotating ring 7 is positioned at the second rotating seat 9 and the second stationary ring 5 axial clearance along axle sleeve 2 axis; The second annular protrusion 18 for pushing against with the second rotating ring 7 end face is provided with towards the second rotating ring 7 one end face on first stationary ring 4 is provided with for pushing against with the first rotating ring 6 end face the first annular protrusion 17, second stationary ring 5 towards the first rotating ring 6 one end face;
Stage clip 10 is socketed on axle sleeve 2 periphery wall, and stage clip 10 one end is connected with the first stationary ring 4 to promote the first stationary ring 4 end face and the first rotating ring 6 end face pushes against, and the other end is connected with the second stationary ring 5 to promote the second stationary ring 5 end face and the second rotating ring 7 end face pushes against.
The outer ring the first described stationary ring 4 being provided with on the end face of machinery inside and stationary seat 3 between the end face of machinery inside the first ring film 11, first ring film 11 is inlaid on stationary seat 3, and is compressed by screw 13; The inner ring of the first ring film 11 is inlaid on the first stationary ring 4, and is compressed by screw 13; The outer ring second stationary ring 5 being provided with on the end face of machinery outside and stationary seat 3 between the end face of machinery outside the second ring film 12, second ring film 12 is inlaid on stationary seat 3, and is compressed by screw 13; The inner ring of the second ring film 12 is inlaid on the first stationary ring 4, and is compressed by screw 13.Described outer ring refers to the circle that on the first ring film 11 and the second ring film 12, diameter is larger, and inner ring refers to the circle that on the first ring film 11 and the second ring film 12, diameter is less.The first described ring film 11 and the second ring film 12 are all be made up of elastic material, as the nitrile rubber in rubber, butadiene rubber, polyurethane rubber etc., the elastic deformability of these rubber is comparatively strong, provides certain amount of deformation can to the first stationary ring 4 relative to stationary seat, the second stationary ring 5 when moving axially relative to stationary seat 3.
Be provided with pressure ring between the first described ring film 11 and screw 13, between the second ring film 12 and screw 13, be provided with pressure ring.Described pressure ring is the platy structure of a ring, its shape and the first ring film 11, second ring film 12 matching form.
The second described rotating seat 9 refers to along adjustable being connected on axle sleeve 2 periphery wall of axle sleeve 2 axial direction, second rotating seat 9 offers multiple through hole 14 along axle sleeve 2 radial direction, axle sleeve 2 offers the lock screw 23 blind hole 15 second rotating seat 9 being connected with and screwing for passing through hole 14 and blind hole 15.
Described stationary seat 3 is less than simultaneously the external diameter of the first rotating seat 8 and the second rotating seat 9 for the diameter of bore of accommodating first stationary ring 4 and the second stationary ring 5.
The first described stationary ring 4 and the second stationary ring 5 end are equipped with the annular groove 16 for accommodating stage clip 10 end.
Wherein, this mechanical seal is also provided with many places seal ring, as the second rotating seat 9 and axle sleeve 2 surface of contact, the first rotating ring 6 and the first rotating seat 8 surface of contact, the second rotating ring 7 and the second rotating seat 9 surface of contact etc.The foregoing is only preferred embodiment of the present invention, not for limiting the scope of the invention.All within the claims in the present invention, any amendment done, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the device for mechanical seal, it comprises for being arranged on the axle sleeve (2) in rotating shaft (1) and the stationary seat (3) for being connected with the opening that machinery supplies rotating shaft (1) to pass, stationary seat (3) is socketed on axle sleeve (2), it is characterized in that: also comprise the first stationary ring (4), the second stationary ring (5), the first rotating ring (6), the second rotating ring (7), the first rotating seat (8), the second rotating seat (9) and stage clip (10);
Described the first stationary ring (4) is socketed on axle sleeve (2) periphery wall, first stationary ring (4) is slidably connected in stationary seat (3), and the first stationary ring (4) is arranged on the upper one end near machinery inside of axle sleeve (2); Second stationary ring (5) is socketed on axle sleeve (2) periphery wall, second stationary ring (5) is slidably connected in stationary seat (3), and the second stationary ring (5) is arranged on the upper one end near machinery outside of axle sleeve (2);
First rotating seat (8) is one-body molded with axle sleeve (2), and the first rotating seat (8) is arranged on the upper one end near machinery inside of axle sleeve (2); Second rotating seat (9) is connected on axle sleeve (2) periphery wall along axle sleeve (2) axial direction is adjustable, and the second rotating seat (9) is arranged on the upper one end near machinery outside of axle sleeve (2); First stationary ring (4) and the second stationary ring (5) are positioned at the first rotating seat (8) and the second rotating seat (9) axial clearance along axle sleeve (2) axis;
First rotating ring (6) is inlaid in the first rotating seat (8), and the first rotating ring (6) is positioned at the first rotating seat (8) and the axial clearance of the first stationary ring (4) along axle sleeve (2) axis; Second rotating ring (7) is inlaid in the second rotating seat (9), and the second rotating ring (7) is positioned at the second rotating seat (9) and the axial clearance of the second stationary ring (5) along axle sleeve (2) axis; First stationary ring (4) is provided with the first annular protrusion (17) for pushing against with the first rotating ring (6) end face towards the first rotating ring (6) end face, the second stationary ring (5) is provided with the second annular protrusion (18) for pushing against with the second rotating ring (7) end face towards the second rotating ring (7) end face;
Stage clip (10) is socketed on axle sleeve (2) periphery wall, stage clip (10) one end is connected with the first stationary ring (4) to promote the first stationary ring (4) end face and the first rotating ring (6) end face pushes against, and the other end is connected with the second stationary ring (5) to promote the second stationary ring (5) end face and the second rotating ring (7) end face pushes against.
2. the device for mechanical seal according to claim 1, it is characterized in that: between the end face of the upper end face near machinery inside of described the first stationary ring (4) and the upper close machinery inside of stationary seat (3), be provided with the first ring film (11), the outer ring of the first ring film (11) is inlaid on stationary seat (3), and is compressed by screw (13); The inner ring of the first ring film (11) is inlaid on the first stationary ring (4), and is compressed by screw (13);
The second ring film (12) is provided with between the end face of the upper end face near machinery outside of the second stationary ring (5) and the upper close machinery outside of stationary seat (3), the outer ring of the second ring film (12) is inlaid on stationary seat (3), and is compressed by screw (13); The inner ring of the second ring film (12) is inlaid on the first stationary ring (4), and is compressed by screw (13).
3. the device for mechanical seal according to claim 2, it is characterized in that: be provided with pressure ring between described the first ring film (11) and screw (13), between the second ring film (12) and screw (13), be provided with pressure ring.
4. the device for mechanical seal according to claim 1, it is characterized in that: described the second rotating seat (9) refers to along adjustable being connected on axle sleeve (2) periphery wall of axle sleeve (2) axial direction, second rotating seat (9) offers multiple through hole (14) along axle sleeve (2) radial direction, axle sleeve (2) offers the lock screw (23) blind hole (15) second rotating seat (9) being connected with and screwing for passing through hole (14) and blind hole (15).
5. the device for mechanical seal according to claim 1, is characterized in that: the external diameter described stationary seat (3) being less than simultaneously the first rotating seat (8) and the second rotating seat (9) for the diameter of bore of accommodating first stationary ring (4) and the second stationary ring (5).
6. the device for mechanical seal according to claim 1, is characterized in that: described the first stationary ring (4) and the second stationary ring (5) end are equipped with the annular groove (16) for accommodating stage clip (10) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755169.2A CN105526355A (en) | 2015-11-09 | 2015-11-09 | Device used for mechanical sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755169.2A CN105526355A (en) | 2015-11-09 | 2015-11-09 | Device used for mechanical sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105526355A true CN105526355A (en) | 2016-04-27 |
Family
ID=55768764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755169.2A Pending CN105526355A (en) | 2015-11-09 | 2015-11-09 | Device used for mechanical sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677869A (en) * | 2020-06-10 | 2020-09-18 | 重庆齿轮箱有限责任公司 | Split type magnetic sealing device |
| CN113803465A (en) * | 2021-09-09 | 2021-12-17 | 中国航发南方工业有限公司 | Vacuum anti-leakage device for main shaft of smelting chamber of vacuum casting furnace |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2168972Y (en) * | 1993-02-06 | 1994-06-15 | 沈阳辽东机械密封技术服务公司 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
| CN2345781Y (en) * | 1998-09-02 | 1999-10-27 | 崔忠信 | Adjustable built-in mechanical sealing device |
| CN2420229Y (en) * | 1999-11-05 | 2001-02-21 | 成都明达船用密封有限公司 | Water lubricating stern shaft sealing device for ship |
| CN1594892A (en) * | 2004-07-01 | 2005-03-16 | 宜兴市张泽化工设备厂 | Double end surface mechanical seal for centrifugal pumps |
| CN201027691Y (en) * | 2007-04-04 | 2008-02-27 | 胡滨 | Double-end face packaging type mechanical seal member used for chemical pump |
| CN202493770U (en) * | 2012-02-29 | 2012-10-17 | 上海骐荣机械自控有限公司 | Follow-up shaft seal ring structure of butterfly valve |
| CN202768465U (en) * | 2012-09-24 | 2013-03-06 | 重庆长风化学工业有限公司 | Methyldiethanolamine (MDEA) multistage delivery pump |
| CN203272220U (en) * | 2013-05-21 | 2013-11-06 | 白银鸿浩化工机械制造有限公司 | Two-end-face packaging type mortar pump mechanical seal |
-
2015
- 2015-11-09 CN CN201510755169.2A patent/CN105526355A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2168972Y (en) * | 1993-02-06 | 1994-06-15 | 沈阳辽东机械密封技术服务公司 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
| CN2345781Y (en) * | 1998-09-02 | 1999-10-27 | 崔忠信 | Adjustable built-in mechanical sealing device |
| CN2420229Y (en) * | 1999-11-05 | 2001-02-21 | 成都明达船用密封有限公司 | Water lubricating stern shaft sealing device for ship |
| CN1594892A (en) * | 2004-07-01 | 2005-03-16 | 宜兴市张泽化工设备厂 | Double end surface mechanical seal for centrifugal pumps |
| CN201027691Y (en) * | 2007-04-04 | 2008-02-27 | 胡滨 | Double-end face packaging type mechanical seal member used for chemical pump |
| CN202493770U (en) * | 2012-02-29 | 2012-10-17 | 上海骐荣机械自控有限公司 | Follow-up shaft seal ring structure of butterfly valve |
| CN202768465U (en) * | 2012-09-24 | 2013-03-06 | 重庆长风化学工业有限公司 | Methyldiethanolamine (MDEA) multistage delivery pump |
| CN203272220U (en) * | 2013-05-21 | 2013-11-06 | 白银鸿浩化工机械制造有限公司 | Two-end-face packaging type mortar pump mechanical seal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677869A (en) * | 2020-06-10 | 2020-09-18 | 重庆齿轮箱有限责任公司 | Split type magnetic sealing device |
| CN113803465A (en) * | 2021-09-09 | 2021-12-17 | 中国航发南方工业有限公司 | Vacuum anti-leakage device for main shaft of smelting chamber of vacuum casting furnace |
| CN113803465B (en) * | 2021-09-09 | 2023-12-01 | 中国航发南方工业有限公司 | Vacuum leakage-proof device for main shaft of smelting chamber of vacuum casting furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10302102B2 (en) | Seal assemblies for reciprocating and rotary applications | |
| CN104685273A (en) | Mechanical seal device | |
| KR101423410B1 (en) | Fluid pressure cylinder | |
| JP5547354B1 (en) | Sealing device | |
| CA2085052A1 (en) | Floating seal ring | |
| CN101429947A (en) | Centrifugal pump, a shaft sleeve and a stationary seal member | |
| WO2014024741A1 (en) | Sliding component | |
| CN105526360A (en) | Mechanical sealing mechanism | |
| CN105526355A (en) | Device used for mechanical sealing | |
| CN106051162A (en) | Shaft lever floating sealing device and application method | |
| JP6378548B2 (en) | Sealing device | |
| JP6941479B2 (en) | Seal structure and mechanical seal | |
| CN105526356A (en) | Mechanical sealing structure | |
| CN105526354A (en) | Mechanical sealing device | |
| KR101990173B1 (en) | Ball Bearing | |
| CN105526361A (en) | Mechanical sealing piece | |
| CN208237078U (en) | conical surface adaptive mechanical sealing device | |
| CN105526362A (en) | Mechanism used for mechanical sealing | |
| CN205047845U (en) | Quiet ring subassembly among mechanical seal | |
| KR20140043873A (en) | Seal structure of rotational shaft and valve device having the same | |
| CN204677489U (en) | Mechanical seal device | |
| JP5359638B2 (en) | Sealing structure | |
| CN104832452A (en) | Mechanical sealing device | |
| CN211344027U (en) | Adjustable throttle ring | |
| CN108488384A (en) | conical surface adaptive mechanical sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160427 |