CN209180364U - A kind of kettle double end-face mechanical sealing device - Google Patents
A kind of kettle double end-face mechanical sealing device Download PDFInfo
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- CN209180364U CN209180364U CN201821933226.7U CN201821933226U CN209180364U CN 209180364 U CN209180364 U CN 209180364U CN 201821933226 U CN201821933226 U CN 201821933226U CN 209180364 U CN209180364 U CN 209180364U
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- sealing
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Abstract
The utility model embodiment discloses a kind of kettle double end-face mechanical sealing device, it include: sealing device and pressure equaliser, sealing device includes top pressure closure, sealing drum and sealing bottom cover, inlet is provided on the outer wall of top pressure closure, it seals and is provided with lower inlet on the outer wall of bottom cover, sealing drum is internally provided with sealing fluid accommodating cavity, the both ends of sealing drum are provided with seal assembly, pressure equaliser includes compensator and connector, institute's compensator is internally provided with piston, and the inside of compensator is divided into two independent spaces by piston.Mechanical seal is when used for a long time, sealing fluid has a degree of loss, the sealing fluid liquid level line of the compensator of the application is higher than the sealing fluid liquid level line in sealing fluid accommodating cavity, the sealing fluid of compensator can automatically flow into sealing fluid accommodating cavity under gravity, prevent to cause machine envelope two sides pressure difference big due to gas-liquid equilibrium line clogging and lead to the damage of double mechanical seal.
Description
Technical field
The utility model relates to technical field of mechanical more particularly to a kind of kettle double end-face mechanical sealing devices.
Background technique
Compared with single mechanical end face seal, double mechanical seal performance is good, is suitable for deep-etching, high temperature, band suspension
Grain and fiber medium, gas medium, inflammable and explosive, volatile low-viscosity media, the sealing of condition of high vacuum degree operating condition.Double mechanical
Sealing is not only the repetition of single mechanical end face seal, in some emphasis occasions of chemical industry, can effectively local chronicle it is dangerous, toxic, easy
Combustion, the leakage of explosive substance, have high-performance safety effect.When sealing high-pressure medium, can reasonably distribute each close
The both ends pressure difference of envelope, improves the working pressure range of sealing., easily condensation, vaporized media poor to some self-lubrications, by close
Sealing cavity injection sealing fluid improves the operating condition of sealing, greatly improves the efficiency and service life of sealing.Double mechanical seal is former
Reason is essentially identical with single mechanical end face seal principle, is all by the section perpendicular to rotation axis in Fluid pressure and compensation mechanism
The device for preventing fluid from leaking for being bonded and constituting with respect to sliding is kept under the effect of elastic force and the cooperation of auxiliary seal.So
Often because gas-liquid equilibrium line clogging causes machine, envelope two sides pressure difference is big for double end-face mechanical sealing device in the prior art afterwards
And lead to the damage of double mechanical seal.
Utility model content
It is in the prior art to solve the purpose of this utility model is to provide a kind of kettle double end-face mechanical sealing device
Double end-face mechanical sealing device often leads to Double End machine because gas-liquid equilibrium line clogging causes machine envelope two sides pressure difference big
The problem of damage of tool sealing.
The utility model provides a kind of kettle double end-face mechanical sealing device, and the mechanically-sealing apparatus includes: sealing dress
It sets and pressure equaliser, the sealing device is connected by gas-liquid equilibrium pipeline with the pressure equaliser；
Institute's sealing device includes top pressure closure, sealing drum and sealing bottom cover, the top pressure closure and the sealing bottom cover
The both ends of the sealing drum are set to, the sealing bottom cover is fixedly connected with reaction kettle, is arranged on the outer wall of the top pressure closure
There is upper inlet, lower inlet is provided on the outer wall of the sealing bottom cover, the sealing drum is internally provided with sealing fluid appearance
Chamber is set, the upper inlet and the lower inlet are connected with the sealing fluid accommodating cavity, and main shaft is disposed through described
The inside of sealing fluid accommodating cavity；
The both ends of the sealing drum are provided with seal assembly, and the seal assembly includes rotating ring, stationary ring, O-ring, spring
And spring base, the internal diameter of the rotating ring, the internal diameter of the stationary ring, the internal diameter of the O-ring and the spring base internal diameter
Equal with the outer diameter of main shaft, the stationary ring is fixedly connected with the top pressure closure, and the rotating ring is set to the stationary ring and institute
It states between spring base, one end of the spring is connected with the spring base, and the other end of the spring is connected with the rotating ring
It connects, the O-ring is set between the rotating ring and main shaft；
The pressure equaliser includes compensator and connector, and the connector is fixedly connected with the compensator, is balanced
Tank is internally provided with piston, and the inside of the compensator is divided into two independent spaces, the compensator by the piston
Bottom space be connected with the inside of reaction kettle, the headspace of the compensator is held by the connector and the sealing fluid
It sets chamber to be connected, the sealing fluid liquid level line of the compensator is higher than the sealing fluid liquid level in the sealing fluid accommodating cavity
Line.
Preferably, gland is provided between the top pressure closure and the sealing drum.
Preferably, the top pressure closure and the sealing bottom cover are internally provided with cooling-water duct, the top pressure closure
Cooling water inlet and cooling water outlet, the cooling water inlet and the cooling are provided with on the side wall of the sealing bottom cover
Water out is connected with cooling-water duct.
Preferably, repairing mouth is provided at the top of the compensator, the repairing mouth is connected with the inside of the compensator
Logical, the repairing mouth is connected with handlance.
Preferably, the piston is connected with piston rod close to the one end at top, the piston rod far from the piston one
End is provided with alert position device, is provided with the alert bit line of highest and minimum alert bit line on the outer wall of police position device.
From the above technical scheme, kettle double end-face mechanical sealing device provided by the utility model, comprising: sealing dress
It sets and pressure equaliser, sealing device is connected by gas-liquid equilibrium pipeline with pressure equaliser；Institute's sealing device includes
Top pressure closure, sealing drum and sealing bottom cover, top pressure closure and sealing bottom cover are set to the both ends of sealing drum, sealing bottom cover and anti-
It answers kettle to be fixedly connected, is provided with inlet on the outer wall of top pressure closure, seal and be provided with lower inlet on the outer wall of bottom cover, it is close
Sealed tube is internally provided with sealing fluid accommodating cavity, and upper inlet and lower inlet are connected with sealing fluid accommodating cavity, and main shaft passes through
Wear the inside for being placed in sealing fluid accommodating cavity；The both ends of sealing drum are provided with seal assembly, and seal assembly includes rotating ring, quiet
Ring, O-ring, spring and spring base, the internal diameter of rotating ring, the internal diameter of stationary ring, the internal diameter of the internal diameter of O-ring and spring base are equal
Equal with the outer diameter of main shaft, stationary ring is fixedly connected with top pressure closure, and rotating ring is set between stationary ring and spring base, one end of spring
It is connected with spring base, the other end of spring is connected with rotating ring, and O-ring is set between rotating ring and main shaft；Pressure balance dress
It sets including compensator and connector, connector is fixedly connected with compensator, and institute's compensator is internally provided with piston, and piston is by compensator
Inside be divided into two independent spaces, the bottom space of compensator is connected with the inside of reaction kettle, the top of compensator
Space is connected by connector with sealing fluid accommodating cavity, and the sealing fluid liquid level line of compensator is higher than in sealing fluid accommodating cavity
Sealing fluid liquid level line.The big compensator bottom space of pressure when kettle is worked with double end-face mechanical sealing device, in reaction kettle
Pressure, push balance pipe piston base, forces piston rise, push balance canister headspace in sealing fluid, balance tank deck
Sealing fluid in portion space is expressed in sealing fluid accommodating cavity by connector, into sealing fluid accommodating cavity after make sealing fluid accommodating cavity
In sealing fluid generate pressure, reach after balancing each other with reacting kettle inner pressure, realize sealing fluid sealing；In addition turn with main shaft
The dynamic while vibration generated or the abrasion due to being used for a long time between rotating ring and stationary ring, spring can compensate abrasion or offset automatically
Part so that rotating ring and stationary ring are closely bonded, O-ring can also further play sealing function；Mechanical seal is in length
Phase, the sealing fluid liquid level line of the compensator of the application was higher than sealing in use, sealing fluid has a degree of loss
Sealing fluid liquid level line in liquid accommodating cavity, the sealing fluid of compensator can automatically flow into sealing fluid accommodating under gravity
Chamber prevents to cause machine envelope two sides pressure difference big due to gas-liquid equilibrium line clogging and lead to the damage of double mechanical seal.
Detailed description of the invention
It, below will be to attached drawing needed in the embodiment in order to illustrate more clearly of the technical solution of the utility model
It is briefly described, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall schematic of kettle double end-face mechanical sealing device provided by the utility model.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the utility model, below in conjunction with this reality
With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
The range of the utility model protection all should belong in example.
Please refer to the overall schematic that Fig. 1 is kettle double end-face mechanical sealing device provided by the utility model.It is mechanical close
Seal apparatus includes: sealing device 1 and pressure equaliser 2, and sealing device 1 passes through gas-liquid equilibrium pipeline and pressure equaliser 2
It is connected.
Institute's sealing device 1 includes top pressure closure 11, sealing drum 12 and sealing bottom cover 13, top pressure closure 11 and sealing bottom cover
13 are set to the both ends of sealing drum 12, and sealing bottom cover 13 is fixedly connected with reaction kettle, is provided on the outer wall of top pressure closure 11
Inlet 111 seals and is provided with lower inlet 131 on the outer wall of bottom cover 13, and sealing drum 12 is internally provided with sealing fluid accommodating
Chamber 121, upper inlet 111 and lower inlet 131 are connected with sealing fluid accommodating cavity 121, and main shaft is disposed through sealing fluid
The inside of accommodating cavity 121.
The both ends of sealing drum 12 are provided with seal assembly 14, and seal assembly 14 includes rotating ring 141, stationary ring 142, O-ring
143, spring 144 and spring base 145, the internal diameter of rotating ring 141, the internal diameter of stationary ring 142, O-ring 143 internal diameter and spring
The internal diameter of seat 145 is equal with the outer diameter of main shaft, and stationary ring 142 is fixedly connected with top pressure closure 11, and rotating ring 141 is set to stationary ring
Between 142 and spring base 145, one end of spring 144 is connected with spring base 145, the other end and 141 phase of rotating ring of spring 144
Connection, O-ring 143 are set between rotating ring 141 and main shaft.
Pressure equaliser 2 includes compensator 21 and connector 22, and connector 22 is fixedly connected with compensator 21, institute's compensator 21
Be internally provided with piston 211, the inside of compensator 21 is divided into two independent spaces, the bottom of compensator 21 by piston 211
Portion space is connected with the inside of reaction kettle, and the headspace of compensator 21 is connected by connector 22 with sealing fluid accommodating cavity 121
Logical, the sealing fluid liquid level line of compensator 21 is higher than the sealing fluid liquid level line in sealing fluid accommodating cavity 121.
From the above technical scheme, kettle double end-face mechanical sealing device provided by the utility model, 1 He of sealing device
Pressure equaliser 2, sealing device 1 are connected by gas-liquid equilibrium pipeline with pressure equaliser 2.Institute's sealing device 1 includes
Top pressure closure 11, sealing drum 12 and sealing bottom cover 13, top pressure closure 11 and sealing bottom cover 13 are set to the both ends of sealing drum 12,
Sealing bottom cover 13 is fixedly connected with reaction kettle, and inlet 111 is provided on the outer wall of top pressure closure 11, seals the outer of bottom cover 13
Lower inlet 131 is provided on wall, sealing drum 12 is internally provided with sealing fluid accommodating cavity 121, upper inlet 111 and lower feed liquor
Mouth 131 is connected with sealing fluid accommodating cavity 121, and main shaft is disposed through the inside of sealing fluid accommodating cavity 121.Sealing drum 12
Both ends are provided with seal assembly 14, and seal assembly 14 includes rotating ring 141, stationary ring 142, O-ring 143, spring 144 and spring
Seat 145, the internal diameter of rotating ring 141, the internal diameter of stationary ring 142, the internal diameter of O-ring 143 and spring base 145 internal diameter and main shaft
Outer diameter it is equal, stationary ring 142 is fixedly connected with top pressure closure 11, and rotating ring 141 is set between stationary ring 142 and spring base 145, bullet
One end of spring 144 is connected with spring base 145, and the other end of spring 144 is connected with rotating ring 141, and O-ring 143 is set to dynamic
Between ring 141 and main shaft.Pressure equaliser 2 includes compensator 21 and connector 22, and connector 22 is fixedly connected with compensator 21, institute
Compensator 21 is internally provided with piston 211, and the inside of compensator 21 is divided into two independent spaces by piston 211, balance
The bottom space of tank 21 is connected with the inside of reaction kettle, and the headspace of compensator 21 passes through connector 22 and sealing fluid accommodating cavity
121 are connected, and the sealing fluid liquid level line of compensator 21 is higher than the sealing fluid liquid level line in sealing fluid accommodating cavity 121.
When kettle is worked with double end-face mechanical sealing device, the pressure in reaction kettle is greater than the pressure of 21 bottom space of compensator, pushes flat
Weighing apparatus 211 bottom of tank piston, forces piston 211 rise, and push the sealing fluid in 21 headspace of compensator, and 21 top of compensator is empty
Between in sealing fluid be expressed in sealing fluid accommodating cavity 121 by connector 22, into sealing fluid accommodating cavity 121 sealing fluid accommodating cavity
Sealing fluid in 121 generates pressure, reaches after balancing each other with reacting kettle inner pressure, realizes sealing fluid sealing；In addition with main shaft
The vibration that generates simultaneously of rotation or the abrasion due to being used for a long time between rotating ring 141 and stationary ring 142, spring 144 can be automatically
The part of compensation abrasion or offset, so that rotating ring 141 and stationary ring 142 are closely bonded, O-ring 143 can also further be risen
To sealing function；When used for a long time, sealing fluid has a degree of loss for mechanical seal, the compensator 21 of the application it is close
Sealing liquid liquid level line is higher than the sealing fluid liquid level line in sealing fluid accommodating cavity 121, compensator 21 under gravity
Sealing fluid can automatically flow into sealing fluid accommodating cavity 121, prevent to cause machine envelope two sides pressure difference big due to gas-liquid equilibrium line clogging
And lead to the damage of double mechanical seal.
As the preferred embodiment of the utility model, gland 15 is provided between top pressure closure 11 and sealing drum 12.It is logical
It crosses the gland 15 increased on stationary ring 142 and compresses stationary ring 142, improve the sealing performance of mechanical seal.
As the preferred embodiment of the utility model, top pressure closure 11 is internally provided with cooling water with sealing bottom cover 13
Cooling water inlet 16 and cooling water outlet 17, cooling water are provided on the side wall of channel, top pressure closure 11 and sealing bottom cover 13
Import 16 and cooling water outlet 17 are connected with cooling-water duct.The liquid with media compatibility is passed through in cooling-water duct, from
And reach: preventing high temperature, toxic and valuable medium from leaking out from pump shaft, prevents the medium containing solid particle from leaking into sealing fluid accommodating
In chamber 121, sealing surface is worn, prevents the medium (such as liquefied gas) for easily vaporizing icing from leaking into and generates gas in sealing fluid accommodating cavity 121
Body causes dry friction and wears sealing surface, prevents the medium easily crystallized from leaking into sealing fluid accommodating cavity 121, because being cooled into knot
It is brilliant and wear sealing surface, it under negative pressure, prevents air and flushing liquor from leaking into pump, can also prevent high-temperature medium from entering sealing fluid
In accommodating cavity 121；The frictional heat generated when rotating ring and stationary ring work is taken away, in addition keeps having one layer of liquid film to play profit between sealing surface
Sliding effect.
As the preferred embodiment of the utility model, the top of compensator 21 is provided with repairing mouth 212, repairing mouth 212
It is connected with the inside of compensator 21, repairing mouth 212 is connected with handlance 213.In long-term use, sealing liquid can not for mechanical seal
With the consumption of degree, since the effect of piston 211 can constantly be automatically replenished sealing liquid, to guarantee that sealing liquid is in always in mechanical seal
Full state.21 fluid infusion of compensator other than artificial fluid infusion, can also otherwise designed it is electronic, 213 fluid infusion of handlance, as long as in repairing
The a set of fluid infusion system of installation at mouth 212.With electronic, manual pump fluid infusion, can fluid infusion by force in the operating condition, to guarantee
Mechanical seal can never fail.
As the preferred embodiment of the utility model, piston 211 is connected with piston rod 214 close to the one end at top, living
Stopper rod 214 is provided with alert position device 215 far from one end of piston 211, and the alert bit line of highest is provided on the outer wall of alert position device 215
23 and minimum alert bit line 24.As 21 sealing fluid of compensator is reduced, piston 211 can rise automatically, and general 211 mark post of piston rises
Piston 211 manually should be depressed into bottom under no pressure operating condition in chamber kettle when to 2/3rds, pass through 21 oiling bolt of compensator and mend
Sealing liquid is filled, while unscrewing bleeder screw, fluid infusion finishes, then tightens oiling and bleeder screw.The alert bit line 23 of highest is the mark of piston 211
The extreme higher position of knowledge, minimum alert bit line 24 are the extreme lower position that piston 211 identifies, and aspect operating personnel grasps in compensator 21
The case where sealing fluid capacity.
The above is only specific embodiment of the present utility model, make skilled artisans appreciate that or realizing that this is practical
It is novel.Various modifications to these embodiments will be apparent to one skilled in the art, defined herein
General Principle can realize in other embodiments without departing from the spirit or scope of the present utility model.Therefore,
The present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The consistent widest scope of clever feature.
Claims (5)
1. a kind of kettle double end-face mechanical sealing device, which is characterized in that the mechanically-sealing apparatus includes: sealing device (1)
With pressure equaliser (2), the sealing device (1) is connected by gas-liquid equilibrium pipeline with the pressure equaliser (2)；
Institute's sealing device (1) includes top pressure closure (11), sealing drum (12) and sealing bottom cover (13), the top pressure closure (11)
The both ends of the sealing drum (12), the sealing bottom cover (13) and the fixed company of reaction kettle are set to sealing bottom cover (13)
It connects, is provided with inlet (111) on the outer wall of the top pressure closure (11), is provided on the outer wall of sealing bottom cover (13)
Lower inlet (131), the sealing drum (12) are internally provided with sealing fluid accommodating cavity (121), the upper inlet (111) and
The lower inlet (131) is connected with the sealing fluid accommodating cavity (121), and main shaft is disposed through the sealing fluid accommodating
The inside of chamber (121)；
The both ends of the sealing drum (12) are provided with seal assembly (14), and the seal assembly (14) includes rotating ring (141), quiet
Ring (142), O-ring (143), spring (144) and spring base (145), internal diameter, the stationary ring (142) of the rotating ring (141)
Internal diameter, the O-ring (143) internal diameter and the spring base (145) internal diameter it is equal with the outer diameter of main shaft, it is described
Stationary ring (142) is fixedly connected with the top pressure closure (11), and the rotating ring (141) is set to the stationary ring (142) and the bullet
Between spring abutment (145), one end of the spring (144) is connected with the spring base (145), the spring (144) it is another
End is connected with the rotating ring (141), and the O-ring (143) is set between the rotating ring (141) and main shaft；
The pressure equaliser (2) includes compensator (21) and connector (22), the connector (22) and the compensator (21)
It is fixedly connected, institute's compensator (21) is internally provided with piston (211), and the piston (211) is by the interior of the compensator (21)
Part is divided into two independent spaces, and the bottom space of the compensator (21) is connected with the inside of reaction kettle, the balance
The headspace of tank (21) is connected by the connector (22) with the sealing fluid accommodating cavity (121), the compensator (21)
Sealing fluid liquid level line be higher than the sealing fluid accommodating cavity (121) in sealing fluid liquid level line.
2. a kind of kettle double end-face mechanical sealing device according to claim 1, which is characterized in that the top pressure closure
(11) it is provided between the sealing drum (12) gland (15).
3. a kind of kettle double end-face mechanical sealing device according to claim 1, which is characterized in that the top pressure closure
(11) and sealing bottom cover (13) is internally provided with cooling-water duct, the top pressure closure (11) and the sealing bottom cover
(13) cooling water inlet (16) and cooling water outlet (17) are provided on side wall, the cooling water inlet (16) and described cold
But water out (17) is connected with cooling-water duct.
4. a kind of kettle double end-face mechanical sealing device according to claim 1, which is characterized in that the compensator (21)
Top be provided with repairing mouth (212), the repairing mouth (212) is connected with the inside of the compensator (21), the repairing
Mouth (212) is connected with handlance (213).
5. a kind of kettle double end-face mechanical sealing device according to claim 4, which is characterized in that the piston (211)
One end close to top is connected with piston rod (214), and the piston rod (214) is provided with far from the one end of the piston (211)
It warns position device (215), highest alert bit line (23) and minimum alert bit line (24) is provided on the outer wall of police's position device (215).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933226.7U CN209180364U (en) | 2018-11-22 | 2018-11-22 | A kind of kettle double end-face mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933226.7U CN209180364U (en) | 2018-11-22 | 2018-11-22 | A kind of kettle double end-face mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209180364U true CN209180364U (en) | 2019-07-30 |
Family
ID=67373851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821933226.7U Active CN209180364U (en) | 2018-11-22 | 2018-11-22 | A kind of kettle double end-face mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209180364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586723A (en) * | 2021-08-05 | 2021-11-02 | 南通江山农药化工股份有限公司 | Automatic liquid supplementing system for oxidation kettle machine seal |
-
2018
- 2018-11-22 CN CN201821933226.7U patent/CN209180364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586723A (en) * | 2021-08-05 | 2021-11-02 | 南通江山农药化工股份有限公司 | Automatic liquid supplementing system for oxidation kettle machine seal |
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