CN109751277A - Self priming pump positive/negative-pressure operating condition mechanical seal - Google Patents
Self priming pump positive/negative-pressure operating condition mechanical seal Download PDFInfo
- Publication number
- CN109751277A CN109751277A CN201910144489.2A CN201910144489A CN109751277A CN 109751277 A CN109751277 A CN 109751277A CN 201910144489 A CN201910144489 A CN 201910144489A CN 109751277 A CN109751277 A CN 109751277A
- Authority
- CN
- China
- Prior art keywords
- hole
- negative pressure
- sealing gland
- mechanical seal
- pressure cavity
- 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.)
- Granted
Links
- 230000037452 priming Effects 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 210000004907 gland Anatomy 0.000 claims abstract description 39
- 238000011010 flushing procedure Methods 0.000 claims abstract description 11
- 238000005273 aeration Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 27
- 238000005493 welding type Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Self priming pump positive/negative-pressure operating condition mechanical seal, including sealing gland and axle sleeve, negative pressure cavity sealing element is provided in the inner hole of the sealing gland back, sealing gland is machined with independent hollow chilling chamber, axle sleeve is mounted on pump shaft and passes through sealing gland inner hole, the sleeve outer circle is arranged with bellows mechanical seal, bellows mechanical seal rotating ring and axle sleeve are fixedly mounted, stationary ring and sealing gland inner convex platform are fixedly mounted, the axle sleeve, bellows mechanical seal, negative pressure cavity sealing element and sealing gland form negative pressure cavity together, the flushing hole with seal chamber perforation is offered on sealing gland, drainage hole with the aspirating hole of negative pressure cavity perforation and with the perforation of chilling chamber, chilling hole.Also pass through aspirating hole while vacuum evacuation device is vacuumized to pump chamber before pump startup to vacuumize to bellows mechanical seal inside, offsets the influence vacuumized in pump chamber to bellows wave plate weld seam, improve bellows force-bearing situation.
Description
Technical field
The present invention relates to technical field of sealing technology, and in particular to self priming pump positive/negative-pressure operating condition mechanical seal is suitable for high temperature
With the sealing of solvent medium.
Background technique
Because welding type metallic bellows mechanical seal has good floatability and random back-off, without setting general throw-out collar
The dynamic auxiliary seal of type spring machine envelope can avoid sliding generation axial rub resistance on axis because of dynamic auxiliary seal
Power and reduce sealing compensation ability, and can avoid auxiliary seal ring non-refractory and become non-in mechanical seal the problems such as solvent
It is often common a kind of.Welding type metallic bellows mechanical seal normal operating conditions is full of medium outside bellows, is positive pressure,
Inner hole leads to atmosphere, is normal pressure, therefore stress when welding type metallic bellows mechanical seal design is only anti-external positive pressure,
Intolerant to negative pressure.With constantly improve for self priming pump technology, safety, stability are higher and higher, and self priming pump mentions under dielectric fluid
Upper operating condition will be used wider and wider.When self priming pump just starts starting, because being full of air in pump chamber and suction line, need
Discharge gas is vacuumized, is at this time negative pressure in pump, as the air in suction line is discharged, medium is sucked up into pump in pond
It is intracavitary, positive pressure is switched to by negative pressure in pump chamber after pump production run.Therefore self priming pump pump cavity pressure is in positive and negative alternating state, especially
It is that pump is out of order, and when maintenance pumps frequent starting, and alternately variation will cause and is installed on sealing frequent positive/negative-pressure inside pump chamber
Intracavitary welding type metallic bellows mechanical seal wave plate commissure fracture, therefore self priming pump often can only be close using spring type mechanical
Envelope, and spring type mechanical sealing in the case where high temperature and medium are solvent in use, auxiliary seal ring is mostly used polytetrafluoroethylene (PTFE)
(PTFE) it manufactures, maximum operation (service) temperature can not meet the requirement of high temperature pump seal at 200 DEG C or so.Soft graphite although resistance to height
Temperature, but its intensity is low, cracky, does not adapt to the operating condition that spring sealed seal ring of moving ring working condition need to slide axially.Though
Right perfluoroether cushion rubber can improve limiting temperature some but also can only be resistance to 300 DEG C and expensive.As high temperature and solvent
Positive/negative-pressure alternately changes when the common welding type metallic bellows mechanical seal of class mixture condition is because that can not adapt to self-priming pump work
And it cannot select.
Summary of the invention
The object of the present invention is to provide a kind of still to be able to normal use in the case where positive/negative-pressure operating condition alternately changes
Welding type metallic bellows mechanical seal.
To achieve the goals above, the present invention adopts the following technical scheme:
Self priming pump positive/negative-pressure operating condition mechanical seal, including sealing gland and axle sleeve, the sealing gland back offer
Inner hole is provided with negative pressure cavity sealing element in inner hole, and negative pressure cavity sealing element is fixedly mounted by bolt and sealing gland, sealing pressure
Lid is machined with independent hollow chilling chamber, and sealing gland is mounted by means of bolts on pump cover, and the axle sleeve is mounted on pump shaft
Sealing gland inner hole is gone up and passes through, sleeve outer circle is arranged with bellows mechanical seal, and bellows mechanical seal rotating ring and axle sleeve are logical
Bolt fixed installation is crossed, mechanical sealing static ring of bellows is fixedly mounted by bolt and sealing gland inner convex platform, the axle sleeve, wave
The mechanical seal of line pipe, negative pressure cavity sealing element and sealing gland form negative pressure cavity together, are opened up on sealing gland there are four hole, are distinguished
For flushing hole, aspirating hole, drainage hole and chilling hole, the flushing hole and seal chamber are penetrated through, and the aspirating hole and negative pressure cavity penetrate through,
The drainage hole and chilling hole and chilling chamber penetrate through.
The aspirating hole is connected with vacuum evacuation device air entry, and vacuum evacuation device is vacuumized to pump chamber and negative pressure cavity simultaneously,
Coolant liquid enters from chilling hole, flows through chilling chamber and is discharged from drainage hole to cool down to mechanical seal, keeps the temperature steam from drainage hole
Into, flow through chilling chamber and from chilling hole be discharged to be kept the temperature to mechanical seal.
The negative pressure cavity sealing element is made of aeration aperture, seal and air bag, and aeration aperture is offered on the seal, close
The inner hole of envelope body is provided with air bag, and the outlet side of aeration aperture is connected to air bag, the aeration aperture inlet end of negative pressure cavity sealing element and
Vacuum evacuation device exhaust pipe connects, and reduces air bag inner hole to air bag inflation by the gas of vacuum evacuation device discharge, air bag inner wall
Banding sleeve outer circle is to realize sealing of the negative pressure cavity sealing element to negative pressure cavity；Or the aeration aperture inlet end of negative pressure cavity sealing element and outer
It sets gas source to be connected, reduces air bag inner hole to air bag inflation by external gas source, air bag inner wall banding sleeve outer circle is negative to realize
Chamber sealing element is pressed to seal negative pressure cavity.
The invention has the benefit that
1, sealing gland is equipped with the aspirating hole penetrated through with negative pressure cavity, is taken out very by vacuum evacuation device to pump chamber before pump startup
Also pass through aspirating hole while empty to vacuumize to bellows mechanical seal inside, counteracts and vacuumized in pump chamber to bellows wave plate
The influence of weld seam improves bellows force-bearing situation.
2, vacuum evacuation device is vacuumized to pump chamber and negative pressure cavity simultaneously, multi-purpose content, saves cost and equipment；
3, independent hollow chilling chamber is set on sealing gland, and chilling chamber sets drainage hole and chilling hole, chilling chamber and negative pressure
Chamber is provided separately, and it is not necessary that drainage hole and chilling bore closure device for opening is separately arranged, can prevent from giving bellows mechanical seal inside
Because drainage hole and chilling hole are not turned off when pumping, gas enters negative pressure cavity from drainage hole or chilling hole, causes negative pressure cavity to take out true
Sky failure.
4, it fits closely when negative pressure cavity sealing element air bag inner wall is only vacuumized before pump operating with axle sleeve, runs well in pump
When and sleeve outer circle between have gap, it is ensured that air bag will not cause to wear because of axle sleeve high speed rotation, long service life, and will not
Air bag and axle sleeve fit closely power loss caused by phase mutual friction when because of pump operating.
5, air bag is inflated using the exhaust gas of vacuum evacuation device discharge, and vacuum evacuation device, which is started to work, to be started to inflate, and is taken out true
The empty device gas replenishment process that stops working also is simultaneously stopped, and be ensure that timely tightening of the air bag before pump operating and is disengaged, entire mistake
Journey vacuumizes and utilizes its original system with gas replenishment process, and all processes increase control system without manually controlling, without additional,
The reliable expense of performance safety is low.
6, air bag inner wall was vacuumized far from sleeve outer circle, the vacuum evacuation device of self priming pump when due to self priming pump commencement of commercial operation
The journey time is shorter (generally only more than ten seconds), and air bag will not be impacted by pumping interior high temperature, and the present invention is suitable for high temperature and solvent
The sealing of medium.
Detailed description of the invention
Fig. 1 is self priming pump positive/negative-pressure operating condition mechanical seal assembly schematic diagram one (vacuum evacuation device gas supply) of the present invention；
Fig. 2 is self priming pump positive/negative-pressure operating condition mechanical seal assembly schematic diagram two (external gas source feed) of the present invention；
Fig. 3 is sealing gland rearview of the present invention；
Fig. 4 is negative pressure cavity seal configuration schematic diagram of the present invention；
Fig. 5 is apparatus of the present invention bellows-welding structural schematic diagram；
1, vacuum evacuation device, 2, vacuum evacuation device exhaust pipe, 3, vacuum evacuation device air entry, 4, axle sleeve, 5, bellows machine
Tool sealing, 6, sealing gland, 7, chilling chamber, 8, aspirating hole, 9, negative pressure cavity, 10, negative pressure cavity sealing element, 11, drainage hole, 12, punching
Hole flushing, 13, chilling hole, 14, aeration aperture, 15, seal, 16, air bag, 17, wave plate, 18, weld seam, 19, external gas source, 20, from
Heart pump, 21, seal chamber.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, self priming pump positive/negative-pressure operating condition mechanical seal, including sealing gland 6 and axle sleeve
4,6 back of sealing gland offers inner hole, negative pressure cavity sealing element 10 is provided in inner hole, and negative pressure cavity sealing element 10 passes through
Bolt and sealing gland 6 are fixedly mounted, and sealing gland 6 is machined with independent hollow chilling chamber 7, and sealing gland 6 is solid by bolt
Dingan County is on pump cover, and the axle sleeve 4 is mounted on pump shaft and passes through 6 inner hole of sealing gland, and 4 outer circle of axle sleeve is arranged with bellows
Mechanical seal 5,5 rotating ring of bellows mechanical seal and axle sleeve 4 are bolted installation, and 5 stationary ring of bellows mechanical seal passes through
Bolt and 6 inner convex platform of sealing gland are fixedly mounted, and the bellows in bellows mechanical seal 5 is made of one group of wave plate 17, and wave
17 junction of piece is welded together to form weld seam 18 by plasma welding, and the axle sleeve 4, bellows mechanical seal 5, negative pressure cavity are close
Sealing 10 and sealing gland 6 form negative pressure cavity 9, the pump cover, bellows mechanical seal 5, sealing gland 6 and axle sleeve 4 one together
Composition seal chamber 21 is played, opens up that there are four holes, respectively flushing hole 12, aspirating hole 8, drainage hole 11 and chilling on sealing gland 6
Hole 13, the flushing hole 12 are penetrated through with seal chamber 21, and the aspirating hole 8 is penetrated through with negative pressure cavity 9, the drainage hole 11 and chilling hole
13 penetrate through with chilling chamber 7.
The aspirating hole 8 is connected with vacuum evacuation device air entry 3, and vacuum evacuation device 1 is taken out very to pump chamber and negative pressure cavity 9 simultaneously
Sky, when the pumped medium temperature entered in seal chamber 21 by flushing hole 12 is higher than the temperature that bellows mechanical seal 5 can bear
Chilling chamber 7 leads to coolant liquid with to medium cooling in seal chamber 21 when spending, liquid it is low into it is upper go out, coolant liquid enters anxious from chilling hole 13
Cold chamber 7 is simultaneously discharged from drainage hole 11, when the pumped medium temperature entered in seal chamber 21 by flushing hole 12 is lower than certain temperature
It will become that viscosity is excessively high or crystallization, heat preservation steam is led to thus when influencing mechanical seal normal use performance, in chilling chamber 7 to close
Seal chamber 21 heat up, gas height into it is lower go out, heat preservation steam from drainage hole 11 enter chilling chamber 7 and from chilling hole 13 be discharged.
The negative pressure cavity sealing element 10 is made of aeration aperture 14, seal 15 and air bag 16, is opened up on the seal 15
There is aeration aperture 14, the inner hole of seal 15 is provided with air bag 16, and the outlet side of aeration aperture 14 is connected to air bag 16, and negative pressure cavity is close
14 inlet end of aeration aperture of sealing 10 connects with vacuum evacuation device exhaust pipe 2, and the gas being discharged by vacuum evacuation device 1 is to air bag 16
Inflation reduces 16 inner hole of air bag, and 16 inner wall banding axle sleeve of air bag, 4 outer circle is to realize negative pressure cavity sealing element 10 to the close of negative pressure cavity 9
Envelope.
The operation principle of the present invention is that:
Centrifugal pump 20 is taken out very to the negative pressure cavity 9 of 20 pump chamber of centrifugal pump and sealing gland 6 before starting by vacuum evacuation device 1 simultaneously
Sky, vacuum evacuation device air entry 3 are connected with the aspirating hole 8 of 20 pump chamber of centrifugal pump and negative pressure cavity 9 respectively, vacuum evacuation device exhaust pipe
2 are connected with the aeration aperture 14 and atmosphere or waste gas recovering device of negative pressure cavity sealing element 10 respectively.Vacuum evacuation device 1 is from centrifugal pump 20
The gas extracted out in pump chamber and negative pressure cavity 9 is discharged from vacuum evacuation device exhaust pipe 2, and a part is filled with the gas of negative pressure cavity sealing element 10
In capsule 16, rest part enters atmosphere, and when it is poisonous and harmful that gas, which is discharged, the gas that original is discharged to atmosphere is discharged to exhaust gas
Recyclable device.There are gaps for inner hole and 4 outer circle of axle sleeve when not being charged gas in air bag 16, when vacuum evacuation device 1 starts to take out very
Negative pressure cavity 9 is negative pressure under 1 suction of vacuum evacuation device after sky, and the gas that vacuum evacuation device exhaust pipe 2 is discharged is in negative pressure cavity 9
Negative pressure and vacuum evacuation device exhaust pipe 2, which are vented under positive pressure collective effect, enters air bag 16, and 16 inside and outside differential pressure of air bag can prevent from being vented
16 inner wall of air bag is strutted and is tightly wrapped up by the gas that pipe discharge gas is only arranged to atmosphere without entering air bag 16, into air bag 16
Firmly 4 outer circle of axle sleeve can prevent outside air from entering negative pressure cavity 9, to guarantee smooth realization that negative pressure cavity 9 vacuumizes, ripple at this time
Pipe external and internal pressure is identical.Bellows wave plate 17 will not cause wave plate 17 to open outward because of inside and outside differential pressure, and then make 17 weld seam of wave plate
18 generate cracking phenomena.When sucting medium full of pump chamber, pump chamber vacuumizes end, and vacuum evacuation device air entry 3 stops pumping, takes out
Vacuum plant exhaust pipe 2 stops exhaust, and air bag 16 is interior, and there is no gas injection, 16 inner wall of air bag and 4 outer circles of axle sleeve to disengage, ripple
5 inner hole of pipe mechanical seal is communicated with the atmosphere, and pressure is atmospheric pressure, at this time 20 production run of centrifugal pump, and pumped medium is from flushing hole
12 enter seal chamber 21, and pressure becomes positive pressure in seal chamber 21, and 5 inside and outside differential pressure of bellows mechanical seal is positive pressure, are restoring it just
Normal working condition.Whole process utilizes its original system, increases control system without additional, performance safety is reliable.
Embodiment 2
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, embodiment 2 the difference from embodiment 1 is that, the negative pressure cavity sealing element 10
Aeration aperture 14 connect with external gas source 19, inflated by external gas source 19 to air bag 16, filled by external gas source 19 to air bag 16
Gas reduces 16 inner hole of air bag, and 16 inner wall banding axle sleeve of air bag, 4 outer circle is to realize negative pressure cavity sealing element 10 to the close of negative pressure cavity 9
Envelope.Rest part is same as Example 1.
Claims (3)
1. self priming pump positive/negative-pressure operating condition mechanical seal, which is characterized in that including sealing gland and axle sleeve, the sealing gland back
Portion offers inner hole, negative pressure cavity sealing element is provided in inner hole, and negative pressure cavity sealing element is pacified by the way that bolt and sealing gland are fixed
Dress, sealing gland are machined with independent hollow chilling chamber, and sealing gland is mounted by means of bolts on pump cover, and axle sleeve is mounted on
On pump shaft and sealing gland inner hole is passed through, the sleeve outer circle is arranged with bellows mechanical seal, bellows mechanical seal rotating ring
It is bolted installation with axle sleeve, mechanical sealing static ring of bellows is fixedly mounted by bolt and sealing gland inner convex platform, institute
It states axle sleeve, bellows mechanical seal, negative pressure cavity sealing element and sealing gland and forms negative pressure cavity together, offer four on sealing gland
A hole, respectively flushing hole, aspirating hole, drainage hole and chilling hole, the flushing hole and seal chamber penetrate through, the aspirating hole and negative
Chamber perforation, the drainage hole and chilling hole and chilling chamber is pressed to penetrate through.
2. self priming pump according to claim 1 positive/negative-pressure operating condition mechanical seal, it is characterised in that: the aspirating hole and pumping
Vacuum plant air entry is connected, and vacuum evacuation device is vacuumized to pump chamber and negative pressure cavity simultaneously, and chilling liquid enters stream from chilling hole
It is discharged through chilling chamber and from drainage hole, heat preservation steam enters from drainage hole to be flowed through chilling chamber and be discharged from chilling hole.
3. self priming pump according to claim 1 positive/negative-pressure operating condition mechanical seal, it is characterised in that: the negative pressure cavity sealing
Part is made of aeration aperture, seal and air bag, and aeration aperture is offered on the seal, and the inner hole of seal is provided with air bag,
And the outlet side of aeration aperture is connected to air bag, the aeration aperture inlet end of negative pressure cavity sealing element and vacuum evacuation device exhaust pipe or external
Gas source connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144489.2A CN109751277B (en) | 2019-02-27 | 2019-02-27 | Positive and negative pressure working condition mechanical seal for self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144489.2A CN109751277B (en) | 2019-02-27 | 2019-02-27 | Positive and negative pressure working condition mechanical seal for self-priming pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109751277A true CN109751277A (en) | 2019-05-14 |
| CN109751277B CN109751277B (en) | 2024-02-13 |
Family
ID=66407813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910144489.2A Active CN109751277B (en) | 2019-02-27 | 2019-02-27 | Positive and negative pressure working condition mechanical seal for self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109751277B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145468A (en) * | 2019-05-25 | 2019-08-20 | 锦州重型水泵有限公司 | Water pump keeps the method and device of negative pressure after shutting down |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU147871A1 (en) * | 1960-12-14 | 1961-11-30 | В.Ф. Померанцев | High-temperature sealing device for the rotating shaft of the pump, including a bellows mechanical seal with rubbing pairs |
| BE744777A (en) * | 1969-01-22 | 1970-07-01 | Duriron Cy Inc | CENTRIFUGAL PUMP FOR CORROSIVE MATERIALS |
| US4560173A (en) * | 1984-06-01 | 1985-12-24 | Durametallic Corporation | Mechanical seal assembly with coolant circulation structure |
| US4688806A (en) * | 1985-04-12 | 1987-08-25 | Oy Safematic Ltd. | Slide ring sealing assembly with bellows and fluid pressure control of sealing pressure |
| JPH02209674A (en) * | 1989-02-08 | 1990-08-21 | Ulvac Corp | Rod seal in sealing treatment device |
| JPH0360658U (en) * | 1989-10-17 | 1991-06-14 | ||
| US5823539A (en) * | 1995-04-21 | 1998-10-20 | Environamics Corporation | Environmentally safe pump having a bellows seal and a split ring shaft seal |
| US5873574A (en) * | 1996-07-18 | 1999-02-23 | John Crane Sealol Inc. | Bellows seal with reverse pressure capability |
| JP2003287146A (en) * | 2002-03-29 | 2003-10-10 | Fujitsu Ltd | Pressure space partition structure |
| US20030230851A1 (en) * | 2002-03-18 | 2003-12-18 | Roddis Alan James | Metal bellows mechanical seal |
| DE202006019205U1 (en) * | 2006-12-20 | 2007-02-22 | Burgmann Industries Gmbh & Co. Kg | Seal for viscous fluid pump has housing containing sliding seal ring, throttle ring and fixed seal for use when pump shaft is not rotating |
| CN101074733A (en) * | 2006-05-16 | 2007-11-21 | 泰州康乔机电设备有限公司 | Pallet high-temperature-resisting corrugated pipe mechanical seal |
| CN101769379A (en) * | 2010-03-23 | 2010-07-07 | 南京林业大学 | Active type adaptive control mechanical sealing device and control method |
| CN201916207U (en) * | 2010-11-23 | 2011-08-03 | 侯亚军 | Mechanical seal self-priming pump |
| CN202510713U (en) * | 2012-03-20 | 2012-10-31 | 江苏永盛流体科技有限公司 | Mechanical sealing part for reaction kettle |
| CN103233910A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Integrated bellows mechanical seal device for pump |
| CN203770195U (en) * | 2013-12-26 | 2014-08-13 | 东莞市华汇精密机械有限公司 | Mechanical sealing device for high temperature medium |
| CN104685272A (en) * | 2012-10-19 | 2015-06-03 | 日本伊格尔博格曼有限公司 | Bellows seal |
| US20150226335A1 (en) * | 2009-03-30 | 2015-08-13 | Eagle Industry Co., Ltd. | Bellows type mechanical seal |
| CN204663957U (en) * | 2015-05-30 | 2015-09-23 | 山东钢铁股份有限公司 | High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump |
| CN104995440A (en) * | 2013-05-27 | 2015-10-21 | 伊格尔工业股份有限公司 | Mechanical seal device |
| US20150330400A1 (en) * | 2014-05-16 | 2015-11-19 | Baker Hughes Incorporated | Metal Bellows Seal Section and Method to Evacuate Air During Filling |
| CN206801928U (en) * | 2017-04-26 | 2017-12-26 | 沈阳北碳密封有限公司 | Sulphur self priming pump seals |
| CN209539627U (en) * | 2019-02-27 | 2019-10-25 | 沈阳北碳密封有限公司 | Self priming pump positive/negative-pressure operating condition mechanical seal |
-
2019
- 2019-02-27 CN CN201910144489.2A patent/CN109751277B/en active Active
Patent Citations (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU147871A1 (en) * | 1960-12-14 | 1961-11-30 | В.Ф. Померанцев | High-temperature sealing device for the rotating shaft of the pump, including a bellows mechanical seal with rubbing pairs |
| BE744777A (en) * | 1969-01-22 | 1970-07-01 | Duriron Cy Inc | CENTRIFUGAL PUMP FOR CORROSIVE MATERIALS |
| US3551067A (en) * | 1969-01-22 | 1970-12-29 | Duriron Co | Lined corrosion resistant pump |
| US4560173A (en) * | 1984-06-01 | 1985-12-24 | Durametallic Corporation | Mechanical seal assembly with coolant circulation structure |
| US4688806A (en) * | 1985-04-12 | 1987-08-25 | Oy Safematic Ltd. | Slide ring sealing assembly with bellows and fluid pressure control of sealing pressure |
| JPH02209674A (en) * | 1989-02-08 | 1990-08-21 | Ulvac Corp | Rod seal in sealing treatment device |
| JPH0360658U (en) * | 1989-10-17 | 1991-06-14 | ||
| US5823539A (en) * | 1995-04-21 | 1998-10-20 | Environamics Corporation | Environmentally safe pump having a bellows seal and a split ring shaft seal |
| US5873574A (en) * | 1996-07-18 | 1999-02-23 | John Crane Sealol Inc. | Bellows seal with reverse pressure capability |
| US20030230851A1 (en) * | 2002-03-18 | 2003-12-18 | Roddis Alan James | Metal bellows mechanical seal |
| JP2003287146A (en) * | 2002-03-29 | 2003-10-10 | Fujitsu Ltd | Pressure space partition structure |
| CN101074733A (en) * | 2006-05-16 | 2007-11-21 | 泰州康乔机电设备有限公司 | Pallet high-temperature-resisting corrugated pipe mechanical seal |
| DE202006019205U1 (en) * | 2006-12-20 | 2007-02-22 | Burgmann Industries Gmbh & Co. Kg | Seal for viscous fluid pump has housing containing sliding seal ring, throttle ring and fixed seal for use when pump shaft is not rotating |
| US20150226335A1 (en) * | 2009-03-30 | 2015-08-13 | Eagle Industry Co., Ltd. | Bellows type mechanical seal |
| CN101769379A (en) * | 2010-03-23 | 2010-07-07 | 南京林业大学 | Active type adaptive control mechanical sealing device and control method |
| CN201916207U (en) * | 2010-11-23 | 2011-08-03 | 侯亚军 | Mechanical seal self-priming pump |
| CN202510713U (en) * | 2012-03-20 | 2012-10-31 | 江苏永盛流体科技有限公司 | Mechanical sealing part for reaction kettle |
| CN104685272A (en) * | 2012-10-19 | 2015-06-03 | 日本伊格尔博格曼有限公司 | Bellows seal |
| US20150240950A1 (en) * | 2012-10-19 | 2015-08-27 | EagleBurgmann Japan Co., Ltd. | Bellows Seal |
| CN103233910A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Integrated bellows mechanical seal device for pump |
| CN104995440A (en) * | 2013-05-27 | 2015-10-21 | 伊格尔工业股份有限公司 | Mechanical seal device |
| US20160003362A1 (en) * | 2013-05-27 | 2016-01-07 | Eagle Industry Co., Ltd. | Mechanical seal device |
| CN203770195U (en) * | 2013-12-26 | 2014-08-13 | 东莞市华汇精密机械有限公司 | Mechanical sealing device for high temperature medium |
| US20150330400A1 (en) * | 2014-05-16 | 2015-11-19 | Baker Hughes Incorporated | Metal Bellows Seal Section and Method to Evacuate Air During Filling |
| CN204663957U (en) * | 2015-05-30 | 2015-09-23 | 山东钢铁股份有限公司 | High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump |
| CN206801928U (en) * | 2017-04-26 | 2017-12-26 | 沈阳北碳密封有限公司 | Sulphur self priming pump seals |
| CN209539627U (en) * | 2019-02-27 | 2019-10-25 | 沈阳北碳密封有限公司 | Self priming pump positive/negative-pressure operating condition mechanical seal |
Non-Patent Citations (2)
| Title |
|---|
| 原栋文;: "API PLAN53C密封冲洗在加氢液力透平的首次应用", 炼油技术与工程, no. 05 * |
| 张巍;: "高温重油泵机械密封研究", 设备管理与维修, no. 04 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145468A (en) * | 2019-05-25 | 2019-08-20 | 锦州重型水泵有限公司 | Water pump keeps the method and device of negative pressure after shutting down |
| CN110145468B (en) * | 2019-05-25 | 2024-03-12 | 锦州重型水泵有限公司 | Method and device for maintaining negative pressure after water pump is stopped |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109751277B (en) | 2024-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8932034B2 (en) | Well pump with seal section having a labyrinth flow path in a metal bellows | |
| US5735676A (en) | Method and device for the autolubrication of the rolling bearings of turbomachines | |
| CN209539627U (en) | Self priming pump positive/negative-pressure operating condition mechanical seal | |
| CN109751277A (en) | Self priming pump positive/negative-pressure operating condition mechanical seal | |
| CN105604952B (en) | Vertical centrifugal oil pump | |
| US20200368641A1 (en) | Pump separating gas from liquid | |
| CN105987020B (en) | Open type pitot tube pump | |
| CN102062107A (en) | Multi-stage axial flow submerged pump with long shaft and method for conveying phosgene | |
| US3050008A (en) | Elimination of air and vapors from a centrifugal pump | |
| CN107013442A (en) | A kind of pneumatic diaphragm pump of external Pneumatic valve | |
| CN207750254U (en) | A kind of vertical driving pump installation of the special fluid liquid of conveying | |
| US2693148A (en) | Impulse feed pump for aircraft | |
| US11815105B2 (en) | Regenerative blowers-compressors with shaft bypass fluid re-vents | |
| CN207621031U (en) | A kind of single-stage cantilever centrifugal pump | |
| CN206129615U (en) | Circulating water horizontal centrifugal pump | |
| US3973879A (en) | Liquid ring compressor | |
| CN107882768B (en) | A kind of unsteady flow sealing control method and its device | |
| US2541850A (en) | Shaft seal arrangement | |
| CN207418598U (en) | Preform vacuum-pumping density seal apparatus | |
| CN207080381U (en) | A kind of leakage-proof centrifugal blower fan of new conveying toxic gas | |
| CN209430429U (en) | A kind of magnetic drive pump equipped with protective cover | |
| CN207961040U (en) | A kind of single-stage double-suction middle-opening formula centrifugal pump | |
| CN209370085U (en) | Centrifugal cryogenic liquid pump | |
| CN106351868B (en) | A kind of packaging type water chiller envelope and the pump containing machine envelope | |
| CN2200068Y (en) | Rotating isolating type sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |