CN108005947A - Rotary-jet pump packaging type radial double mechanical seal - Google Patents
Rotary-jet pump packaging type radial double mechanical seal Download PDFInfo
- Publication number
- CN108005947A CN108005947A CN201711321194.5A CN201711321194A CN108005947A CN 108005947 A CN108005947 A CN 108005947A CN 201711321194 A CN201711321194 A CN 201711321194A CN 108005947 A CN108005947 A CN 108005947A
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- Prior art keywords
- ring
- seat
- mechanical seal
- inner ring
- friction pair
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000012530 fluid Substances 0.000 abstract description 22
- 239000007788 liquid Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Rotary-jet pump of the present invention packaging type radial double mechanical seal, including rotating ring and stationary ring, rotating ring include the outer shroud dynamic friction pair that inner ring dynamic friction is secondary and is sleeved on outside it, and stationary ring includes the outer shroud static friction pair that inner ring static friction is secondary and is sleeved on outside it；Inner ring dynamic friction is secondary and outer shroud dynamic friction pair is relatively fixed with churning pump rotor, and inner ring static friction is secondary and outer shroud static friction pair is relatively fixed with rotary-jet pump pump cover.Using inner ring dynamic friction is secondary interior mechanical seal is cooperatively formed with inner ring static friction pair, outer shroud dynamic friction is secondary and outer shroud static friction pair cooperatively forms outer mechanical seal composition packaging type radial double mechanical seal, so that sealing performance preferably meets to be actually needed, the pumped medium of interior mechanical seal leakage is taken out of mechanical seal using the sealing fluid in the sealing sap cavity formed between inside and outside mechanical seal, alarm is realized in mechanical seal leakage and this mechanical seal can be picked and placeed integrally, fit precision is guaranteed in advance that by limited block axially position, so as to improve sealing performance.
Description
Technical field
The present invention relates to a kind of mechanical seal, especially a kind of rotary-jet pump packaging type radial double mechanical seal, belongs to
In mechanical seal for pump field.
Background technology
At present, it is on rotary-jet pump to use single mechanical end face seal or axial double mechanical seal more.
Single mechanical end face seal has limitation on its scope of application, backwashing manner, is only applicable in some media, general to use
It is good and allow the situation for having micro leakage in medium lubricity itself, when medium is poisonous, inflammable, explosive and have sternly to leakage rate
It is not easy to use during lattice requirement.
During using axial double mechanical seal, the mechanical seal of rotary-jet pump is installed on input end, seal assembly axial direction ruler
Modest ability, increases the net positive suction head (NPSH) of pump, reduces the cavitation performance of rotary-jet pump, have to the overall performance of rotary-jet pump compared with
It is big to influence.
Present integrated mechanical sealing new technology is widely adopted, and integrated mechanical sealing is the rotating part mechanical seal
Point and stationary part pre-install in a pre-installation it is integral, can also claim packaging type machine seal.Integrated mechanical sealing is because being assembled into one
A aggregate, thus it is easier for installation on body, fast, sealed reliable.
Different from conventional pumps, the mechanical seal of rotary-jet pump is installed on the input end of pump, and conventional pump out is enclosed in packaging type machine
The mounting means at mouth end is different, and the machine envelope of packaging type of the present invention need to take phase when installing according to the design feature of rotary-jet pump input end
The technical solution answered.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art and provide a kind of rotary-jet pump packaging type footpath
To double mechanical seal, the double mechanical seal that can form radial direction improves sealing performance, ensures the installation of mechanical seal
Precision and accommodation, to adapt to medium wide.
In order to solve the above technical problems, the present invention is using the basic conception of technical solution：
Rotary-jet pump packaging type radial double mechanical seal, including rotating ring and stationary ring, rotating ring include inner ring dynamic friction pair
With the outer shroud dynamic friction pair being sleeved on outside it, stationary ring includes the outer shroud static friction pair that inner ring static friction is secondary and is sleeved on outside it；Interior gyration
Friction is secondary and inner ring static friction pair complements each other to form interior mechanical seal, and outer shroud dynamic friction is secondary and outer shroud static friction is secondary cooperates
Form outer mechanical seal；Inner ring dynamic friction is secondary and outer shroud dynamic friction pair is relatively fixed with churning pump rotor, inner ring static friction pair
And outer shroud static friction pair is relatively fixed with rotary-jet pump pump cover.
Further, rotary-jet pump packaging type radial double mechanical seal, further includes rotating seat and stationary seat, rotating seat
It is fixedly connected with churning pump rotor, stationary seat is fixedly connected with rotary-jet pump pump cover, and inner ring dynamic friction pair is provided with rotating seat
With outer shroud dynamic friction pair, inner ring static friction pair and outer shroud static friction pair are installed on stationary seat.
Further, rotating seat is outer stairstepping ring, its internal diameter is identical, and outside diameter is different, and the larger part of outside diameter is provided with
Inner ring dynamic friction pair and outer shroud dynamic friction pair, the outer cover of outside diameter smaller portions is equipped with stationary seat, and inner ring dynamic friction is secondary and outer
Gyration friction is secondary towards stationary seat.
Further, axle sleeve is further included, it is on rotating seat and secondary and outer gyration rubs away from inner ring dynamic friction positioned at stationary seat
Wipe secondary side and be installed with transmission ring；Transmission ring is set in outside rotating seat, and rotating seat is set in outside axle sleeve, transmission
Through hole is equipped with ring, rotating seat, screw is by transmission ring, rotating seat and penetrates the axis inside rotating seat and being fixedly connected with the rotor
Set three is fixedly connected.
Further, limited block is installed on transmission ring, is connected by being pre-positioned screw and fixing limited block and transmission ring
Connect, limited block plays the role of axially position when mechanical seal assembles, and limited block offsets with stationary seat, for accurately adjusting machine envelope
Decrement, machine is enclosed in installed on rotary-jet pump after, limited block need to be removed.
Further, rotating ring or stationary ring are compensation ring.
Further, stationary ring is compensation ring, and stationary ring further includes spring, inner ring seat and outer ring spring seat, inner ring
Seat and outer ring spring seat are installed on stationary seat, and inner ring static friction is secondary to be installed on inner ring seat, the secondary peace of outer shroud static friction
On outer ring spring seat；Two groups of springs support inner ring seat and stationary seat, outer ring spring seat and stationary seat respectively.
Further, rotary-jet pump further includes sealing ring with packaging type radial double mechanical seal, rubs in interior gyration secondary
Between rotating seat, outer shroud dynamic friction it is secondary between rotating seat, between inner ring seat and stationary seat, outer ring spring seat and stationary ring
Sealing ring is provided between seat.
Further, it is provided with stationary seat outside sealingfluid inlet and outlet, sealingfluid inlet and outlet are again
The chamber formed between interior mechanical seal and outer mechanical seal.Interior mechanical seal is primary seal, plays canned pump liquor charging
The effect of body, outer mechanical seal are auxiliary seal, play the role of sealing sealing fluid.Sealing fluid has cooling friction pair, and
The medium of leakage can be taken out of to the effect of mechanical seal in interior mechanical seal leakage.
Further, in the secondary contact face with outer shroud dynamic friction pair of outer shroud static friction, outer shroud dynamic friction pair contact face
Area it is big；In the secondary contact face with inner ring dynamic friction pair of inner ring static friction, the area of inner ring dynamic friction pair contact face
Big, inner ring dynamic friction is secondary to be less than the secondary contact with outer shroud static friction pair of outer shroud dynamic friction with the contact area of inner ring static friction pair
Area.
The cantilever of the reception pipe of rotary-jet pump stretches out in rotor.Packaging type radial double mechanical seal is being installed on rotary-jet pump
When, axle sleeve is set in outside the cantilever of reception pipe first, and axle sleeve is attached by screws on rotor, shape between axle sleeve and cantilever
Into annular space form liquid enter rotor runner a part, then by rotating seat be sleeved on axle sleeve and with screw will
Stationary seat is fixed on pump cover, and tightening the trip bolt on transmission ring is fixedly connected with transmission ring, rotating seat and axle sleeve three.This
When, rotating seat has been fixed with stationary seat, must have gap between stationary seat and rotating seat, therefore by limited block and be fixed in biography
Pre-determined bit screw on rotating ring is removed, and is finally fixed on the inlet and outlet section of rotary-jet pump on pump cover by screw lock.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
Rotary-jet pump of the present invention packaging type radial double mechanical seal, utilizes inner ring dynamic friction pair and inner ring static friction pair
Interior mechanical seal is complemented each other to form, outer shroud dynamic friction is secondary and outer shroud static friction pair complements each other to form outer mechanical seal composition collection
Dress formula radial double mechanical seal so that sealing performance preferably meets to be actually needed, also, using interior mechanical seal and outside
Sealing fluid in the sealing sap cavity formed between mechanical seal takes the pumped medium of interior mechanical seal leakage out of mechanical seal, close
Sealing liquid closed-loop flow, that is, sealing sap cavity communication seals liquid storage tank circulates sealing fluid, to sealing fluid in sealing liquid storage tank
Pressure and liquid level are monitored, and when interior mechanical seal or outer mechanical seal are revealed, i.e., sealing fluid is leaked in pumped medium and caused
Sealed fluid pressure reduction, liquid level reduction, or pumped medium, which are leaked in sealing fluid, causes sealed fluid pressure increase, liquid level liter
Height, can all realize alarm and termination of pumping.Stationary seat is set on rotating seat so that mechanical seal can be picked and placeed integrally, be easily installed
And fit precision can be guaranteed in advance that by the axially position of limited block, so as to improve the sealing performance of mechanical seal, and adapt to model
Enclose, adapt to that medium is wide, and the situation of the net positive suction head there is no axial double mechanical seal increase pump.Also, due to churning
Pump inlet end pressure is much lower compared with outlet pressures, therefore packaging type radial double mechanical seal of the present invention is installed on churning
The input end of pump so that the requirement to machine envelope reduces, and the spring in machine envelope can use light spring, makes the structure that machine seals simpler
List, cost are lower.Packaging type radial double mechanical seal is used in rotary-jet pump input end, improves the pitting of rotary-jet pump
Can so that the length of mechanical seal is shorter, and the length of the reception pipe of rotary-jet pump is shorter, and rotary-jet pump entire length is shorter, economy
It is good.
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is scheme of installation of the rotary-jet pump packaging type radial double mechanical seal of the present invention on rotary-jet pump.
1st, rotor 2, pump cover 3, screw 4, inlet and outlet section 5, outer shroud static friction pair 6, spring base 7, stationary seat 8, spring 9, biography
Rotating ring 10, limited block 11, sealingfluid inlet 12, inner ring dynamic friction pair 13, rotating seat 14, axle sleeve 15, screw 16, inner ring static friction
Pair 17, outer shroud dynamic friction pair 18, positioning pin 19, trip bolt 20, pre-determined bit screw 21, screw.
Embodiment
As shown in Figure 1, rotary-jet pump of the present invention packaging type radial double mechanical seal, including rotating ring and stationary ring.Rotating ring
Including the outer shroud dynamic friction pair that inner ring dynamic friction is secondary and is sleeved on outside it, stationary ring includes the outer shroud that inner ring static friction is secondary and is sleeved on outside it
Static friction pair；Inner ring dynamic friction is secondary and inner ring static friction pair complements each other to form interior mechanical seal, outer shroud dynamic friction pair and outer shroud
Static friction pair complements each other to form outer mechanical seal；Inner ring dynamic friction is secondary and outer shroud dynamic friction pair is opposite with churning pump rotor solid
Fixed, inner ring static friction is secondary and outer shroud static friction pair is relatively fixed with rotary-jet pump pump cover.
In the present embodiment, for secondary, rotary-jet pump packaging type radial double mechanical seal of preferably fixing each friction
Rotating seat 13, stationary seat 7 and axle sleeve 14 are further included, rotating seat 13 is connected with axle sleeve 14, and axle sleeve 14 is fixed with churning pump rotor 1 to be connected
Connect, and then realize being relatively fixed for rotating seat 13 and churning pump rotor 1.Stationary seat 7 is solid by screw 3 with rotary-jet pump pump cover 2
Fixed connection.Inner ring dynamic friction pair 12 and outer shroud dynamic friction pair 17 are installed with rotating seat 13, is provided with stationary seat 7
Inner ring static friction pair 16 and outer shroud static friction pair 5.
In order to which installation is better achieved, easy to be picked and placeed mechanical seal as an entirety, in the present embodiment, such as Fig. 1
Shown, rotating seat 13 is outer stairstepping ring, its internal diameter is identical, and outside diameter is different, and the larger part of outside diameter is provided with inner ring dynamic friction
Pair 12 and outer shroud dynamic friction pair 17, the outer cover of outside diameter smaller portions are equipped with stationary seat 7, and inner ring dynamic friction pair 12 and outer gyration
Friction pair 17 is towards stationary seat 7.
Fixed on rotating seat 13 and positioned at stationary seat 7 away from the side of inner ring dynamic friction pair 12 and outer shroud dynamic friction pair 17
Transmission ring 9 is installed；Transmission ring is set in outside rotating seat 13, and rotating seat 13 is set in outside axle sleeve 14, transmission ring 9, rotating ring
Through hole is equipped with seat 13, and trip bolt 19 is by transmission ring 9, rotating seat 13 and penetrates the inside of rotating seat 13 and is fixed with rotor 1
14 three of axle sleeve of connection is fixedly connected.
Rotating ring or stationary ring are compensation ring.In the present embodiment, stationary ring is compensation ring, and stationary ring further includes spring 8, spring base 6,
Spring base 6 is divided into inner ring seat and outer ring spring seat again, and inner ring seat and outer ring spring seat are installed on stationary seat 7,
Inner ring static friction pair 16 is installed on inner ring seat, and outer shroud static friction pair 5 is installed on outer ring spring seat；Two groups of springs 8 divide
Inner ring seat and stationary seat 7, outer ring spring seat and stationary seat 7 are not supported.
Inner ring seat and outer ring spring seat are integrated the spring base of design, its shape has the ring of annular groove for centre,
There is through hole in the slot bottom of this groove, this through hole is unthreaded hole, by positioning pin 18 along ring axially across this through hole and stationary seat 7
It is fixedly connected, but spring base 6 can be slided along its axially opposing positioning pin 18, therefore leaning on for this ring is supported respectively in two groups of springs 8
In the case of the position of the position of nearly inner ring and close outer ring, i.e., two groups of springs 8 support inner ring seat and outer ring spring respectively
In the case of seat, spring base can be moved axially to realize compensation under the action of the spring along it so that inner ring dynamic friction 12 Hes of pair
Interior mechanical seal, outer shroud dynamic friction pair 17 and the outer shroud static friction pair 5 that inner ring static friction pair 16 complements each other to form cooperate
The sealing effect of the outer mechanical seal formed is more preferable.
In order to ensure the installation accuracy between rotating ring and stationary ring, limited block 10 is installed on transmission ring 9, passes through pre-determined bit
Limited block 10 is fixedly connected by screw 20 with transmission ring 9, and limited block 10 supports stationary seat 7 and locks pre-determined bit screw 20 so that
Limited block 10 plays the role of axially position before mechanical seal is installed on rotary-jet pump, therefore, packaging type radial direction double end-face machinery
It is sealed in the decrement that spring 8 has just been adjusted before being installed on rotary-jet pump.
Before rotary-jet pump is installed on, stationary seat is sleeved on rotating seat 13, makes inner ring dynamic friction pair 12 and inner ring static friction
The outer machine that interior mechanical seal, outer shroud dynamic friction secondary 17 and the outer shroud static friction pair 5 that pair 16 complements each other to form complement each other to form
Tool seals, and transmission ring 9 is sleeved on rotating seat 13, and fixes transmission ring 9, rotating seat 13 by trip bolt 19, then will limit
Position block 10 is fixed on transmission ring 9 by being pre-positioned screw 20, and 10 one side of limited block supports stationary seat and then limits stationary ring
Pre-determined bit screw 20 is simultaneously locked in position of the seat in 13 axial direction of rotating seat, and (decrement of spring 8 has been adjusted at this time) is used for essence
Really adjustment machine envelope decrement.
The cantilever of the reception pipe of rotary-jet pump stretches out in rotor, and packaging type radial double mechanical seal is installed on rotary-jet pump
When, axle sleeve 14 is set in outside the cantilever of reception pipe first, and by axle sleeve 14 with screw 15 be fixed to rotor 1 on, axle sleeve 14 with
The annular space formed between cantilever forms the part that liquid enters the runner of rotor, and rotating seat 13 then is sleeved on axle sleeve
It is fixed on 14 and with screw 3 by stationary seat 7 on pump cover 2, the trip bolt 19 tightened on transmission ring 9 makes transmission ring 9, rotating seat
13 and 14 three of axle sleeve be fixedly connected.Because of the effect of screw 3 and trip bolt 19, rotating seat, stationary seat have been fixed, therefore
Limited block 10 and the pre-determined bit screw 20 being fixed on transmission ring 9 are removed, to ensure between stationary seat 7 and transmission ring 9
Gap.
Finally the inlet and outlet section 4 of rotary-jet pump is locked on pump cover 2 by screw 21.Have on the face each contacted
O-ring seal realizes sealing, between the inner ring and rotating seat 13 of interior gyration friction pair 12, the outer ring of inner ring dynamic friction pair 12 with
Between rotating seat 13, between the outer ring of outer shroud dynamic friction pair 17 and rotating seat 13, the inner ring of inner ring seat and stationary seat 7 it
Between, between the outer ring of outer ring spring seat and stationary seat 7 be provided with sealing ring.Between 13 inner ring of rotating seat and axle sleeve 14, stationary ring
Sealing ring is provided between seat 7 and the inlet and outlet section 4 of rotary-jet pump.
It is provided with stationary seat 7 outside sealingfluid inlet 11 connects with seal fluid outlet, sealingfluid inlet and sealing fluid
The sealing sap cavity that outlet is formed between interior mechanical seal and outer mechanical seal again connects.
Interior mechanical seal is primary seal, plays the role of sealing pump liquid, outer mechanical seal is auxiliary seal, is played close
It is sealed the effect of sealing liquid.Sealing fluid is secondary with rubbing with cooling, and can be by the medium of leakage in interior mechanical seal leakage
Take the effect of mechanical seal out of.
In order to enable outer mechanical seal preferably meets seal request, outer shroud static friction pair 5 and outer shroud dynamic friction pair 17
In contact face, the area of outer shroud dynamic friction 17 contact faces of pair is big；Inner ring static friction pair 16 and inner ring dynamic friction pair 12
In contact face, the area of inner ring dynamic friction 12 contact faces of pair is big, and inner ring dynamic friction pair 12 and inner ring static friction pair
16 contact area is less than the contact area of outer shroud dynamic friction pair 17 and outer shroud static friction pair 5.
Invention rotary-jet pump packaging type radial double mechanical seal, it is secondary quiet with inner ring using inner ring dynamic friction
Friction pair complements each other to form interior mechanical seal, and outer shroud dynamic friction is secondary and outer shroud static friction pair complements each other to form outer mechanical seal
Form packaging type radial double mechanical seal so that sealing performance preferably meets to be actually needed, also, close using interior machinery
Sealing fluid in the sealing sap cavity formed between envelope and outer mechanical seal takes the pumped medium of interior mechanical seal leakage out of machinery
Sealing.Sealing fluid closed-loop flow, i.e. the sealingfluid inlet of sealing sap cavity, which connects exterior sealing liquid storage tank with seal fluid outlet, to be made
Sealing fluid circulates, and sealed fluid pressure and liquid level are monitored in sealing liquid storage tank, and interior mechanical seal or outer machinery are close
During envelope leakage, i.e., sealing fluid, which is leaked in pumped medium, causes sealed fluid pressure to reduce, liquid level reduces, or pumped medium leakage
Cause sealed fluid pressure increase, liquid level rise in sealing fluid, can all realize alarm and termination of pumping.Stationary seat is set in rotating seat
On so that mechanical seal can be picked and placeed integrally, be easily installed and can be guaranteed in advance that fit precision by the axially position of limited block,
So as to improve the sealing performance of mechanical seal, and accommodation, adaptation medium are wide, and there is no axial double mechanical seal increasing
Add the situation of the net positive suction head of pump.Also, since rotary-jet pump import end pressure is much lower compared with outlet pressures, thus it is of the present invention
Packaging type radial double mechanical seal is installed on the input end of rotary-jet pump so that the requirement to machine envelope reduces, the bullet in machine envelope
Spring can use light spring, make that the structure that machine seals is simpler, cost is lower.It is radially double using packaging type in rotary-jet pump input end
End surface mechanical sealing, improves the cavitation performance of rotary-jet pump so that the length of mechanical seal is shorter, the length of the reception pipe of rotary-jet pump
Spend shorter, rotary-jet pump entire length is shorter, good economy performance.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only to the present invention's
Preferred embodiment is described, and not the spirit and scope of the present invention are defined, and is not departing from design philosophy of the present invention
Under the premise of, various changes and modifications that professional and technical personnel in the art make technical scheme belong to this hair
Bright protection domain.
Claims (10)
1. rotary-jet pump packaging type radial double mechanical seal, it is characterised in that：Including rotating ring and stationary ring, rotating ring includes inner ring
Dynamic friction is secondary to include the outer shroud static friction that inner ring static friction is secondary and is sleeved on outside it with the outer shroud dynamic friction pair being sleeved on outside it, stationary ring
It is secondary；
Inner ring dynamic friction is secondary and inner ring static friction pair complements each other to form interior mechanical seal, outer shroud dynamic friction pair and outer shroud static friction
Pair complements each other to form outer mechanical seal；
Inner ring dynamic friction is secondary and outer shroud dynamic friction pair is relatively fixed with churning pump rotor, inner ring static friction pair and outer shroud static friction
Pair is relatively fixed with rotary-jet pump pump cover.
2. rotary-jet pump according to claim 1 packaging type radial double mechanical seal, it is characterised in that：Further include dynamic
Ring seat and stationary seat, rotating seat are fixedly connected with churning pump rotor, and stationary seat is fixedly connected with rotary-jet pump pump cover, on rotating seat
Inner ring dynamic friction pair and outer shroud dynamic friction pair are installed, inner ring static friction pair and outer shroud static friction pair are installed on stationary seat.
3. rotary-jet pump according to claim 2 packaging type radial double mechanical seal, it is characterised in that：Rotating seat is
Outer stairstepping ring, its internal diameter is identical, and outside diameter is different, and the larger part of outside diameter is provided with inner ring dynamic friction pair and outer shroud dynamic friction
Pair, the outer cover of outside diameter smaller portions are equipped with stationary seat.
4. rotary-jet pump according to claim 3 packaging type radial double mechanical seal, it is characterised in that：Further include axis
Set,
Transmission is installed with rotating seat and positioned at stationary seat away from the side of inner ring dynamic friction pair and outer shroud dynamic friction pair
Ring；
It is equipped with through hole on transmission ring, rotating seat, screw is by transmission ring, rotating seat and penetrates inside rotating seat and is fixed with rotor
The axle sleeve three of connection is fixedly connected.
5. rotary-jet pump according to claim 4 packaging type radial double mechanical seal, it is characterised in that：In transmission ring
On limited block is installed, limited block offsets with stationary seat and is removed after stationary seat is fixedly connected with rotary-jet pump.
6. according to claim 1-4 any one of them rotary-jet pump packaging type radial double mechanical seal, it is characterised in that：
Rotating ring or stationary ring are compensation ring.
7. rotary-jet pump according to claim 6 packaging type radial double mechanical seal, it is characterised in that：Stationary ring is benefit
Ring is repaid, stationary ring further includes spring, inner ring seat and outer ring spring seat,
Inner ring seat and outer ring spring seat are installed on stationary seat, and inner ring static friction is secondary to be installed on inner ring seat, outside
Ring static friction is secondary to be installed on outer ring spring seat；Two groups of springs support respectively inner ring seat and stationary seat, outer ring spring seat with
Stationary seat.
8. rotary-jet pump according to claim 7 packaging type radial double mechanical seal, it is characterised in that：Further include close
Seal, between interior gyration rubs secondary and rotating seat, outer shroud dynamic friction it is secondary between rotating seat, inner ring seat and stationary seat it
Between, between outer ring spring seat and stationary seat be provided with sealing ring.
9. rotary-jet pump according to claim 1 packaging type radial double mechanical seal, it is characterised in that：In stationary seat
On be provided with outside sealingfluid inlet and outlet, sealingfluid inlet and outlet again with interior mechanical seal and outer mechanical seal it
Between the chamber that is formed.
10. according to claim 1-4 any one of them rotary-jet pump packaging type radial double mechanical seal, its feature exists
In：Inner ring dynamic friction is secondary and the contact area of inner ring static friction pair is less than the secondary contact surface with outer shroud static friction pair of outer shroud dynamic friction
Product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321194.5A CN108005947B (en) | 2017-12-12 | 2017-12-12 | Assembled radial double-end-face mechanical seal for rotary jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321194.5A CN108005947B (en) | 2017-12-12 | 2017-12-12 | Assembled radial double-end-face mechanical seal for rotary jet pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108005947A true CN108005947A (en) | 2018-05-08 |
| CN108005947B CN108005947B (en) | 2024-07-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711321194.5A Active CN108005947B (en) | 2017-12-12 | 2017-12-12 | Assembled radial double-end-face mechanical seal for rotary jet pump |
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| CN (1) | CN108005947B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158405A (en) * | 2007-06-21 | 2008-04-09 | 丹东克隆集团有限责任公司 | Radial direction double end-face mechanical sealing device |
| CN201357068Y (en) * | 2009-01-10 | 2009-12-09 | 浙江长城减速机有限公司 | Pressure-resistant corrosion-resistant mechanical seal for kettles |
| CN203685665U (en) * | 2014-01-22 | 2014-07-02 | 自贡市双龙化工机械有限公司 | Sealing device of rotary injection pump |
| CN204985039U (en) * | 2015-07-20 | 2016-01-20 | 自贡市双龙化工机械有限公司 | A mechanical seal device for rotary jetting pump |
| CN207621071U (en) * | 2017-12-12 | 2018-07-17 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
-
2017
- 2017-12-12 CN CN201711321194.5A patent/CN108005947B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158405A (en) * | 2007-06-21 | 2008-04-09 | 丹东克隆集团有限责任公司 | Radial direction double end-face mechanical sealing device |
| CN201357068Y (en) * | 2009-01-10 | 2009-12-09 | 浙江长城减速机有限公司 | Pressure-resistant corrosion-resistant mechanical seal for kettles |
| CN203685665U (en) * | 2014-01-22 | 2014-07-02 | 自贡市双龙化工机械有限公司 | Sealing device of rotary injection pump |
| CN204985039U (en) * | 2015-07-20 | 2016-01-20 | 自贡市双龙化工机械有限公司 | A mechanical seal device for rotary jetting pump |
| CN207621071U (en) * | 2017-12-12 | 2018-07-17 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108005947B (en) | 2024-07-02 |
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