CN207621071U - Rotary-jet pump packaging type radial double mechanical seal - Google Patents
Rotary-jet pump packaging type radial double mechanical seal Download PDFInfo
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- CN207621071U CN207621071U CN201721722973.1U CN201721722973U CN207621071U CN 207621071 U CN207621071 U CN 207621071U CN 201721722973 U CN201721722973 U CN 201721722973U CN 207621071 U CN207621071 U CN 207621071U
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Abstract
The utility model rotary-jet pump packaging type radial double mechanical seal, including rotating ring and stationary ring, rotating ring include inner ring dynamic friction pair and the outer shroud dynamic friction pair that is sleeved on outside it, and stationary ring includes inner ring static friction pair and the outer shroud static friction pair that 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.Interior mechanical seal is cooperatively formed using inner ring dynamic friction pair and inner ring static friction pair, outer shroud dynamic friction pair and outer shroud static friction pair cooperatively form outer mechanical seal composition packaging type radial double mechanical seal, so that sealing performance preferably meets actual needs, 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, cooperation precision is guaranteed in advance that by limited block axially position, to improve sealing performance.
Description
Technical field
The utility model is related to a kind of mechanical seal, especially a kind of rotary-jet pump is close with packaging type radial direction double end-face machinery
Envelope, belongs to mechanical seal for pump field.
Background technology
Currently, using single mechanical end face seal or axial double mechanical seal on rotary-jet pump 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 have the case where micro leakage in medium lubricity itself, when medium is toxic, inflammable, explosive and have sternly to leakage rate
It is not easy to use when lattice require.
When using axial double mechanical seal, the mechanical seal of rotary-jet pump is mounted 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, to the overall performance of rotary-jet pump have 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 mounted 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 the utility model packaging type need to adopt when installing according to the design feature of rotary-jet pump input end
Take corresponding technical solution.
In view of this special to propose the utility model.
Utility model content
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a kind of rotary-jet pump packaging
Formula radial double mechanical seal can form radial double mechanical seal and improve sealing performance, ensure mechanical seal
Installation accuracy and accommodation, to adapt to medium wide.
In order to solve the above technical problems, the utility model 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 inner ring static friction pair and the outer shroud static friction pair that 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 pair and outer shroud static friction pair cooperate
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 equipped on 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, and internal diameter is identical, and outer diameter is different, and the larger part of outer diameter is equipped with
The outer cover of inner ring dynamic friction pair and outer shroud dynamic friction pair, outer 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, further include axle sleeve, rub on rotating seat and positioned at stationary seat away from inner ring dynamic friction pair and outer gyration
It wipes secondary side and is 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 on 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
It connects, 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 pair is mounted on inner ring seat, outer shroud static friction pair peace
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 packaging type radial double mechanical seal further includes sealing ring, is rubbed 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
It is provided with sealing ring between seat.
Further, it is provided on 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 secondary, and
The medium of leakage can be taken out of to the effect of mechanical seal in interior mechanical seal leakage.
Further, in the contact face of outer shroud static friction pair and outer shroud dynamic friction pair, outer shroud dynamic friction pair contact face
Area it is big；In the contact face of inner ring static friction pair and inner ring dynamic friction pair, the area of inner ring dynamic friction pair contact face
Big, inner ring dynamic friction pair is less than the contact of outer shroud dynamic friction pair and outer shroud static friction pair 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
At annular space constitute 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 makes transmission ring, rotating seat and axle sleeve three be fixedly connected.This
When, rotating seat has been fixed with stationary seat, must be had gap between stationary seat and rotating seat, therefore by limited block and is 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 utility model has the advantages that compared with prior art.
The utility model rotary-jet pump packaging type radial double mechanical seal rubs using inner ring dynamic friction pair and inner ring are quiet
It wipes pair and complements each other to form interior mechanical seal, outer shroud dynamic friction pair and outer shroud static friction pair complement each other to form outer mechanical seal group
At packaging type radial double mechanical seal so that sealing performance preferably meets actual needs, also, utilizes interior mechanical seal
Sealing fluid in the sealing sap cavity formed between outer mechanical seal takes the pumped medium of interior mechanical seal leakage out of mechanical close
Envelope, sealing fluid closed-loop flow, that is, sealing sap cavity communication seals liquid storage tank makes sealing fluid circulate, to close in sealing liquid storage tank
Sealing liquid pressure and liquid level are monitored, and when interior mechanical seal or outer mechanical seal are revealed, i.e., sealing fluid leaks in pumped medium
Causing sealed fluid pressure reduction, liquid level reduction or pumped medium to leak in sealing fluid leads to sealed fluid pressure increase, liquid level
It increases, 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, convenient for peace
It fills and can guarantee in advance that cooperation precision by the axially position of limited block, to improve the sealing performance of mechanical seal, and adapt to
Range, adaptation medium are wide, and there is no the situations of the net positive suction head of axial double mechanical seal increasing pump.Also, due to rotation
Spray pump import end pressure is much lower compared with outlet pressures, therefore packaging type radial double mechanical seal described in the utility model is installed
In the input end of rotary-jet pump so that the requirement to machine envelope reduces, and light spring may be used in the spring in machine envelope, the knot for making machine seal
Structure is simpler, cost is lower.Packaging type radial double mechanical seal is used in rotary-jet pump input end, improves the vapour of rotary-jet pump
Corrosion energy 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, warp
Ji property is good.
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is installation signal of the utility model rotary-jet pump packaging type radial double mechanical seal on rotary-jet pump
Figure.
1, rotor 2, pump cover 3, screw 4, inlet and outlet section 5, outer shroud static friction pair 6, spring base 7, stationary seat 8, bullet
Spring 9, transmission 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.
Specific implementation mode
As shown in Figure 1, the utility model rotary-jet pump packaging type radial double mechanical seal, including rotating ring and stationary ring.
Rotating ring includes inner ring dynamic friction pair and the outer shroud dynamic friction pair that is sleeved on outside it, and stationary ring includes inner ring static friction pair and is sleeved on outside it
Outer shroud static friction pair；Inner ring dynamic friction pair and inner ring static friction pair complement 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 with churning pump rotor phase
To fixation, 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, in order to preferably fix each friction pair, rotary-jet pump packaging type radial double mechanical seal
Further include rotating seat 13, stationary seat 7 and axle sleeve 14, rotating seat 13 is connect with axle sleeve 14, and axle sleeve 14 is fixed with churning pump rotor 1 to be connected
It connects, and then realizes 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.It is installed with inner ring dynamic friction pair 12 and outer shroud dynamic friction pair 17 on rotating seat 13, is equipped on stationary seat 7
Inner ring static friction pair 16 and outer shroud static friction pair 5.
In order to which installation is better achieved, convenient for picking and placeing mechanical seal as a whole, in the present embodiment, such as Fig. 1
Shown, rotating seat 13 is outer stairstepping ring, and internal diameter is identical, and outer diameter is different, and the larger part of outer diameter is equipped with inner ring dynamic friction
The outer cover of pair 12 and outer shroud dynamic friction pair 17, outer diameter smaller portions is equipped with stationary seat 7, and inner ring dynamic friction pair 12 and outer gyration
Friction pair 17 is towards stationary seat 7.
It is 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 on seat 13, trip bolt 19 is by transmission ring 9, rotating seat 13 and penetrates 13 inside of rotating seat 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 as inner ring seat and outer ring spring seat, and inner ring seat and outer ring spring seat are installed on stationary seat 7,
Inner ring static friction pair 16 is mounted on inner ring seat, and outer shroud static friction pair 5 is mounted 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, and shape is the ring that there is annular groove in 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 axially can be under the action of the spring moved along it to realize compensation so that secondary 12 Hes of inner ring dynamic friction
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 being installed on rotary-jet pump, 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 so that transmission ring 9, rotating seat 13 is fixed by trip bolt 19, then will limit
Position block 10 is fixed on by being pre-positioned screw 20 on transmission ring 9, 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 for essence
Really adjustment machine seals 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 constitutes the part that liquid enters the runner of rotor, and rotating seat 13 is then sleeved on axle sleeve
It is fixed on pump cover 2 on 14 and with screw 3 by stationary seat 7, 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 by screw 21 on pump cover 2.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 and rotating seat 13 of outer shroud dynamic friction pair 17, 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
It is provided with sealing ring between seat 7 and the inlet and outlet section 4 of rotary-jet pump.
It is provided on stationary seat 7 outside sealingfluid inlet 11 is connected to 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 is connected to.
Interior mechanical seal is primary seal, plays the role of canned pump liquor charging body, and 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 secondary 17 contact faces of outer shroud dynamic friction is big；Inner ring static friction pair 16 and inner ring dynamic friction pair 12
In contact face, the area of secondary 12 contact faces of inner ring dynamic friction 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.
The utility model the utility model rotary-jet pump packaging type radial double mechanical seal utilizes inner ring dynamic friction pair
Interior mechanical seal is complemented each other to form with inner ring static friction pair, outer shroud dynamic friction pair and outer shroud static friction pair complement each other to form outer
Mechanical seal forms packaging type radial double mechanical seal so that sealing performance preferably meets actual needs, also, utilizes
Sealing fluid in the sealing sap cavity formed between interior mechanical seal and outer mechanical seal is by the pumped medium of interior mechanical seal leakage
Take mechanical seal out of.Sealing fluid closed-loop flow, that is, the sealingfluid inlet for sealing sap cavity are connected to external sealing with seal fluid outlet
Liquid storage tank makes sealing fluid circulate, sealing liquid storage tank in sealed fluid pressure and liquid level are monitored, interior mechanical seal or
When outer mechanical seal leakage, i.e., sealing fluid, which leaks in pumped medium, causes sealed fluid pressure to reduce, liquid level reduces, or pumping
Cause sealed fluid pressure to increase in dielectric leakage to sealing fluid, liquid level raising, can all realize alarm and termination of pumping.Stationary seat is set in
On rotating seat so that mechanical seal can be picked and placeed integrally, be easily installed and can be guaranteed in advance that by the axially position of limited block and matched
Precision is closed, to improve the sealing performance of mechanical seal, and accommodation, adaptation medium are wide, and there is no axial Double End machines
Tool seals the situation of the net positive suction head of increasing pump.Also, since rotary-jet pump import end pressure is much lower compared with outlet pressures, therefore this
Packaging type radial double mechanical seal described in utility model is mounted on the input end of rotary-jet pump so that the requirement to machine envelope is dropped
Low, light spring may be used in the spring in machine envelope, makes that the structure that machine seals is simpler, cost is lower.Make in rotary-jet pump input end
With packaging type radial double mechanical seal, the cavitation performance of rotary-jet pump is improved so that the length of mechanical seal is shorter, churning
The length of the reception pipe of pump is shorter, and 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 new to this practicality
The preferred embodiment of type is described, and is not defined to the conception and scope of the utility model, new not departing from this practicality
Under the premise of type design philosophy, various change that professional and technical personnel in the art make the technical solution of the utility model and
It improves, belongs to the scope of protection of the utility model.
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 pair and the outer shroud dynamic friction pair being sleeved on outside it, stationary ring include inner ring static friction pair and the outer shroud static friction that is sleeved on outside it
It is secondary；
Inner ring dynamic friction pair and inner ring static friction pair complement 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 moving
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, internal diameter is identical, and outer diameter is different, and the larger part of outer diameter is equipped with inner ring dynamic friction pair and outer shroud dynamic friction
The outer cover of pair, outer diameter smaller portions is equipped with stationary seat.
4. rotary-jet pump according to claim 3 packaging type radial double mechanical seal, it is characterised in that：It further include axis
Set,
It is installed with transmission on rotating seat and positioned at stationary seat away from the side of inner ring dynamic friction pair and outer shroud dynamic friction pair
Ring；
Through-hole is equipped 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 to mend
Repay ring, 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 pair is mounted on inner ring seat, outside
Ring static friction pair is mounted 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, feature exists
In：The contact area of inner ring dynamic friction pair and inner ring static friction pair is less than the contact surface of outer shroud dynamic friction pair and outer shroud static friction pair
Product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722973.1U CN207621071U (en) | 2017-12-12 | 2017-12-12 | Rotary-jet pump packaging type radial double mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722973.1U CN207621071U (en) | 2017-12-12 | 2017-12-12 | Rotary-jet pump packaging type radial double mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207621071U true CN207621071U (en) | 2018-07-17 |
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ID=62822759
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721722973.1U Active CN207621071U (en) | 2017-12-12 | 2017-12-12 | Rotary-jet pump packaging type radial double mechanical seal |
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| Country | Link |
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| CN (1) | CN207621071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005947A (en) * | 2017-12-12 | 2018-05-08 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
-
2017
- 2017-12-12 CN CN201721722973.1U patent/CN207621071U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005947A (en) * | 2017-12-12 | 2018-05-08 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
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