CN205780884U - A kind of efficient shaft mechanical seal structure - Google Patents
A kind of efficient shaft mechanical seal structure Download PDFInfo
- Publication number
- CN205780884U CN205780884U CN201620635133.0U CN201620635133U CN205780884U CN 205780884 U CN205780884 U CN 205780884U CN 201620635133 U CN201620635133 U CN 201620635133U CN 205780884 U CN205780884 U CN 205780884U
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- Prior art keywords
- ring
- magnetic
- mentioned
- nonmagnetic
- latch segment
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Abstract
The utility model discloses a kind of efficient shaft mechanical seal structure, magnetic latch segment it is socketed with in rotary shaft successively described in its structure, magnetic rotating ring and nonmagnetic stationary ring, wherein said magnetic latch segment and magnetic rotating ring keep mutually exclusive shape, above-mentioned magnetic latch segment is provided with nonmagnetic linear guide, this is nonmagnetic, and linear guide keeps paralleling with above-mentioned rotary shaft, and above-mentioned magnetic rotating ring is run through in gap straight, described magnetic rotating ring remains the trend along nonmagnetic linear guide towards the distal movement of described magnetic latch segment under the magnetic repellence effect of magnetic latch segment, above-mentioned nonmagnetic stationary ring fits with the inner surface of end cap, this magnetic stationary ring is positioned at the opposite side of above-mentioned magnetic rotating ring and it is carried out axial limiting.Which solve the technical problem carrying major axis mechanical seal structure stability in use, after it is specifically used in plant equipment, there is at its rotary shaft sealing good stability, some class advantages such as service life is long, black box failure rate is low.
Description
Technical field
This utility model relates to a kind of shaft mechanical seal structure, particularly a kind of efficient shaft mechanical seal structure.
Background technology
Mechanical seal refers to be perpendicular to the end face of rotation axis at fluid pressure and compensation mechanism elastic force by least one pair of
The lower device preventing leakage keeping fitting and relatively sliding and constitute of the cooperation of effect and auxiliary seal.Mechanical seal and its
(such as packing seal, fluid-tight etc.) is compared in the sealing of his form, has the following characteristics that 1, good airproof performance, in long-term operating
Middle sealing state is the most stable, and leakage rate is the least, less than the 1% of the most about packing seal leakage rate；2, service life is long, machine
Tool seal face is made up of the self lubricity preferable material of machine wearability, also have a wear compensation mechanism, therefore seal face
Wear extent is the least, and general can use 1～2 year continuously, special available to more than 5～10 years；3、
Operating need not adjust, owing to mechanical seal makes friction pair fit by spring force and fluid pressure, even if on-stream friction pair
Abrasion, seal face keeps laminating the most automatically, and therefore after correct installation, machine need not often adjust, easy to use, is suitable for
Serialization, automated production；4, power attenuation is little, and owing to the end contact area of mechanical seal is little, frictional power loss is little, and one
As be only gland sealed 20%～30%；5, vibration resistance is strong, and mechanical seal is owing to having pooling feature, therefore when equipment or turn
When axle vibrates within the specific limits, remain to keep good sealing property；6, seal parameters is high, applied widely.
The structure that existing machinery seals is as follows: mechanical seal is installed on the rotary shaft, has holding screw, spring in annular seal space
Seat, spring, rotating ring auxiliary seal ring and rotating ring, they rotate with axle.Other parts of mechanical seal, including stationary ring,
Stationary ring auxiliary seal ring and stop pin are arranged in end cap, and end cap is connected with sealing cavity.Axle passes through holding screw, bullet
Spring abutment, spring drive rotating ring to rotate, and stationary ring is still in end cap due to the effect of stop pin.Rotating ring is at spring force and medium
Under the effect of pressure, fit tightly with the end face of stationary ring, and send slip relatively, prevent medium to let out along the radial direction between end face
Leakage, constitutes the primary seal of mechanical seal.Realize compensating under the promotion of spring and sealing-fluid pressure again after friction pair abrasion, begin
Keep the close contact of two seal faces eventually.Dynamic and static ring has nose balance ability be referred to as compensate ring, not there is axially benefit
That repays ability is referred to as uncompensated ring.Rotating ring auxiliary seal ring prevents medium to agree along the leakage in gap between rotating ring and axle；And it is quiet
Ring auxiliary seal ring prevents medium along the leakage in gap between stationary ring and end cap.During work, auxiliary seal ring is without the most relatively
Motion, substantially belongs to static seal.End cap and annular seal space junction for static seal, conventional O or pad seal.
From structure, it is close that the end face being difficult to reveal mainly is changed in the axial seal easily leaked by mechanical seal
Envelope.Wherein rotating ring end face and stationary ring end face are bonded to each other and that constitute movable sealing is to determine mechanical sealing performance and the pass in life-span
Key.But, in the structure that above-mentioned existing machinery seals, rotating ring end face is occurring with the friction pair of stationary ring end face composition bonded to each other
After abrasion condition, it is to realize compensating under the promotion by employing spring and sealing-fluid pressure, and spring is main compensation power,
Owing to spring easily the situations such as elastic extenuation occurs after a long time use (particularly in the environment having fluid media (medium)).Cause
This, the mechanical seal structure of said structure also exists the major defect of stability in use difference.
Utility model content
The purpose of this utility model is to provide a kind of efficient shaft mechanical seal knot to solve the deficiency of above-mentioned technology
Structure.
In order to achieve the above object, a kind of efficient shaft mechanical seal structure designed by this utility model, including sealing
Chamber, is arranged on the end cap on described annular seal space port and sequentially passes through the rotary shaft of described annular seal space and end cap, in above-mentioned rotation
Be socketed with magnetic latch segment, magnetic rotating ring and nonmagnetic stationary ring in rotating shaft successively, this magnetic latch segment, magnetic rotating ring with without magnetic
Property stationary ring three is respectively positioned in above-mentioned annular seal space body, and wherein said magnetic latch segment keeps mutually exclusive with magnetic rotating ring
The axle surface laminating of shape, the inner ring surface of described magnetic latch segment and rotary shaft, and locked by screw, in above-mentioned magnetic lock
Tight block is provided with nonmagnetic linear guide, and this is nonmagnetic, and linear guide keeps paralleling with above-mentioned rotary shaft, and gap is passed through straight
Putting on and state magnetic rotating ring, described magnetic rotating ring remains under the magnetic repellence effect of magnetic latch segment along nonmagnetic straight line and leads
Bar fits towards the trend of the distal movement of described magnetic latch segment, above-mentioned nonmagnetic stationary ring with the inner surface of end cap, this magnetic
Stationary ring is positioned at the opposite side of above-mentioned magnetic rotating ring and it is carried out the internal ring of axial limiting, above-mentioned magnetic rotating ring and nonmagnetic stationary ring
There is gap in all axle surfaces with rotary shaft, face, the inner ring surface at above-mentioned magnetic rotating ring is provided with spacing ring, and in this spacing ring, plug connects
Having the first sealing ring, the lip of this first sealing ring is fitted with axle face seal, at the interior table of above-mentioned nonmagnetic stationary ring Yu end cap
The joint place in face has additional the second sealing ring.
Above-mentioned provided a kind of efficient shaft mechanical seal structure, the magnetic latch segment in rotary shaft in its concrete structure
Matching with magnetic rotating ring, under the magnetic repellence effect of described magnetic latch segment, described magnetic rotating ring remains along nonmagnetic
Linear guide is towards the trend of the distal movement of the tight block of above-mentioned magnetic lock, therefore when the magnetic rotating ring end face in said structure and stationary ring
The friction pair of end face composition bonded to each other is after there is abrasion condition, and magnetic rotating ring is by using magnetic force and sealing-fluid pressure
Promotion under realize compensating, and magnetic force is main compensation power, owing to present this material strong has possessed corrosion-resistant, wear-resistant etc.
Some row superior functions so that the mechanical seal structure of said structure to there is good stability in use poor.
As a kind of technology preferred version, the lip of above-mentioned first sealing ring and axle surface concrete sealing paste between the two
Conjunction structure is: described first sealing ring is H RunddichtringO, is equipped with oil sealing in the upper lip of described H RunddichtringO and lower lip,
And its lateral part is provided with the taper pin hole of through upper lip and lower lip, its lower lip pastes with above-mentioned axle face seal
Close.
Above-mentioned a kind of preferred version has selected H RunddichtringO, then at the upper lip of H RunddichtringO due to the first sealing ring
It has been all provided with oil sealing, so that an above-mentioned simple H RunddichtringO has possessed sealing ring and fluid in mouth and lower lip
Two seals, lift-off seal effectiveness；Meanwhile, the fluid of oil sealing can also effectively absorb described H RunddichtringO because of rotating ring reciprocal
Motion, two with axle mantle friction produced by frictional heat, thus extend the service life of H RunddichtringO.
As further technological improvement, the port of above-mentioned annular seal space is provided with the 3rd sealing ring along face, and the 3rd seals
The lip of circle mutually fits tightly with end cover surface.
In above-mentioned further Technological improvement plan, the 3rd circle can be sealed with the end cap place of cooperation in lift-off seal chamber
Effect property.
One provided by the utility model efficient shaft mechanical seal structure, after it is specifically used in plant equipment,
There is sealing good stability, some class advantages such as service life is long, black box failure rate is low at its rotary shaft such that it is able to fall
Low business equipment seals maintenance number of times, reduces production cost for enterprise.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present embodiment 1 is provided a kind of efficient shaft mechanical seal structure；
Fig. 2 is the schematic diagram that the present embodiment 2 is provided a kind of efficient shaft mechanical seal structure；
Fig. 3 is the close-up schematic view in Fig. 2 at A；
Fig. 4 is the schematic diagram that the present embodiment 3 is provided a kind of efficient shaft mechanical seal structure.
Wherein: annular seal space 1, end cap 2, rotary shaft 3, magnetic latch segment 4, magnetic rotating ring 5, nonmagnetic stationary ring 6, sealing cavity
7, screw 8, nonmagnetic linear guide 9, spacing ring the 10, first sealing ring the 11, second sealing ring 12, upper lip 13, lower lip 14,
Oil sealing 15, lateral part 16, taper pin hole the 17, the 3rd sealing ring 18.
Detailed description of the invention
The utility model will be further described to combine accompanying drawing below by embodiment.
Embodiment 1:
As it is shown in figure 1, a kind of efficient shaft mechanical seal structure that the present embodiment is provided, including annular seal space 1, it is arranged on
End cap 2 on described annular seal space 1 port and sequentially pass through the rotary shaft 3 of described annular seal space 1 and end cap 2, in above-mentioned rotary shaft 3
On be socketed with magnetic latch segment 4, magnetic rotating ring 5 and nonmagnetic stationary ring 6 successively, this magnetic latch segment 4, magnetic rotating ring 5 and nothing
Magnetic stationary ring 6 three is respectively positioned in above-mentioned sealing cavity 7, and wherein said magnetic latch segment 4 keeps mutually with both magnetic rotating rings 5
The axle surface laminating of rejection-like, the inner ring surface of described magnetic latch segment 4 and rotary shaft 3, and locked, upper by screw 8
Stating magnetic latch segment 4 and be provided with nonmagnetic linear guide 9, this is nonmagnetic, and linear guide 9 keeps paralleling with above-mentioned rotary shaft 3,
And above-mentioned magnetic rotating ring 5 is run through in gap straight, described magnetic rotating ring 5 is protected under the magnetic repellence effect of magnetic latch segment 4 all the time
Hold the trend along nonmagnetic linear guide 9 towards the distal movement of described magnetic latch segment 4, above-mentioned nonmagnetic stationary ring 6 and end cap 2
Inner surface fits, and this magnetic stationary ring is positioned at the opposite side of above-mentioned magnetic rotating ring 5 and it is carried out axial limiting, and above-mentioned magnetic is moved
There is gap in the inner ring surface of ring 5 and nonmagnetic stationary ring 6 all axle surfaces with rotary shaft 3, the inner ring surface at above-mentioned magnetic rotating ring 5 sets
Restraining position ring block 10, in this spacing ring 10, plug is connected to the first sealing ring 11, and the lip of this first sealing ring 11 pastes with axle face seal
Close, have additional the second sealing ring 12 in the joint place of above-mentioned nonmagnetic stationary ring 6 with the inner surface of end cap 2.
O-ring seals all selected by the first sealing ring 11 and the second sealing ring 12 in above-mentioned.
Above-mentioned provided a kind of efficient shaft mechanical seal structure, the locking of the magnetic in rotary shaft 3 in its concrete structure
Block 4 matches with magnetic rotating ring 5, and under the magnetic repellence effect of described magnetic latch segment 4, described magnetic rotating ring 5 remains edge
Nonmagnetic linear guide 9 is towards the trend of the distal movement of the tight block of above-mentioned magnetic lock 4, therefore when the magnetic rotating ring 5 in said structure
The friction pair of end face and stationary ring end face composition bonded to each other after abrasion condition occurs, magnetic rotating ring 5 be by use magnetic force and
Realize under the promotion of sealing-fluid pressure compensating, and magnetic force is main compensation power, owing to present this material strong has possessed resistance to
Some row superior functions of grade that burn into is wear-resistant, stablize so that the mechanical seal structure of said structure exists good use
Property is poor.
Embodiment 2:
A kind of efficient shaft mechanical seal structure provided in the present embodiment, its general structure is consistent with embodiment 1,
As shown in Figures 2 and 3, but the concrete sealing between the two of the lip of the first sealing ring 11 described in the present embodiment and axle surface
Bonding structure is: described first sealing ring 11 is H RunddichtringO, and the upper lip 13 of described H RunddichtringO is equal with in lower lip 14
It is provided with oil sealing 15, and its lateral part 16 is provided with the taper pin hole 17 of through upper lip 13 and lower lip 14, its lower lip
14 fit with above-mentioned axle face seal.
The present embodiment has selected H RunddichtringO due to the first sealing ring 11, then H RunddichtringO upper lip 13 with
It has been all provided with oil sealing 15, so that an above-mentioned simple H RunddichtringO has possessed sealing ring and fluid in lower lip 14
Two seals, lift-off seal effectiveness；Meanwhile, the fluid of oil sealing 15 can also effectively absorb described H RunddichtringO because of rotating ring past
Multiple motion, two with axle mantle friction produced by frictional heat, thus extend the service life of H RunddichtringO.
Embodiment 3:
A kind of efficient shaft mechanical seal structure provided in the present embodiment, its general structure is consistent with embodiment 2,
As shown in Figure 4, but the port of annular seal space 1 described in the present embodiment is provided with the 3rd sealing ring 18, the 3rd sealing ring along face
The lip of 18 mutually fits tightly with end cap 2 surface.
The 3rd circle in above-mentioned can seal effectiveness with both end caps 2 place of cooperation in lift-off seal chamber 1.
Claims (3)
1. an efficient shaft mechanical seal structure, including annular seal space (1), is arranged on the end cap on described annular seal space (1) port
(2) and sequentially pass through the rotary shaft (3) of described annular seal space (1) and end cap (2), it is characterized in that depending in above-mentioned rotary shaft (3)
Secondary it is socketed with magnetic latch segment (4), magnetic rotating ring (5) and nonmagnetic stationary ring (6), this magnetic latch segment (4), magnetic rotating ring
(5) it is respectively positioned on nonmagnetic stationary ring (6) three in above-mentioned sealing cavity (7), wherein said magnetic latch segment (4) and magnetic rotating ring
(5) both keep the axle surface laminating of mutually exclusive shape, the inner ring surface of described magnetic latch segment (4) and rotary shaft (3), and pass through
Screw (8) is locked, and is provided with nonmagnetic linear guide (9) on above-mentioned magnetic latch segment (4), this is nonmagnetic linear guide
(9) keeping paralleling with above-mentioned rotary shaft (3), and above-mentioned magnetic rotating ring (5) is run through in gap straight, described magnetic rotating ring (5) exists
Remain under the magnetic repellence effect of magnetic latch segment (4) along nonmagnetic linear guide (9) towards described magnetic latch segment (4)
The trend of distal movement, above-mentioned nonmagnetic stationary ring (6) fits with the inner surface of end cap (2), and this magnetic stationary ring is positioned at above-mentioned magnetic
The opposite side of property rotating ring (5) and it is carried out axial limiting, above-mentioned magnetic rotating ring (5) is equal with the inner ring surface of nonmagnetic stationary ring (6)
There is gap with the axle surface of rotary shaft (3), the inner ring surface above-mentioned magnetic rotating ring (5) is provided with spacing ring (10), this spacing ring
(10) in, plug is connected to the first sealing ring (11), and the lip of this first sealing ring (11) is fitted with axle face seal, above-mentioned without magnetic
Property stationary ring (6) have additional the second sealing ring (12) with the joint place of the inner surface of end cap (2).
One the most according to claim 1 efficient shaft mechanical seal structure, is characterized in that above-mentioned first sealing ring (11)
Lip and the axle surface concrete bonding structure that seals between the two be: described first sealing ring (11) is H RunddichtringO, described
It is equipped with oil sealing (15) in the upper lip (13) of H RunddichtringO and lower lip (14), and its lateral part (16) are provided with and pass through
Logical upper lip (13) and the taper pin hole (17) of lower lip (14), its lower lip (14) is fitted with above-mentioned axle face seal.
One the most according to claim 1 and 2 efficient shaft mechanical seal structure, is characterized in that above-mentioned annular seal space (1)
Port is provided with the 3rd sealing ring (18) along face, and the lip of the 3rd sealing ring (18) mutually fits tightly with end cap (2) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635133.0U CN205780884U (en) | 2016-06-23 | 2016-06-23 | A kind of efficient shaft mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635133.0U CN205780884U (en) | 2016-06-23 | 2016-06-23 | A kind of efficient shaft mechanical seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780884U true CN205780884U (en) | 2016-12-07 |
Family
ID=58130408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620635133.0U Expired - Fee Related CN205780884U (en) | 2016-06-23 | 2016-06-23 | A kind of efficient shaft mechanical seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205780884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167525A (en) * | 2017-04-20 | 2017-09-15 | 中国电力科学研究院 | A kind of all-sealed calibrating gas/oil sample storage and transportation apparatus and method |
-
2016
- 2016-06-23 CN CN201620635133.0U patent/CN205780884U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167525A (en) * | 2017-04-20 | 2017-09-15 | 中国电力科学研究院 | A kind of all-sealed calibrating gas/oil sample storage and transportation apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170623 |