CN106523707B - A kind of mechanically-sealing apparatus - Google Patents
A kind of mechanically-sealing apparatus Download PDFInfo
- Publication number
- CN106523707B CN106523707B CN201610936326.4A CN201610936326A CN106523707B CN 106523707 B CN106523707 B CN 106523707B CN 201610936326 A CN201610936326 A CN 201610936326A CN 106523707 B CN106523707 B CN 106523707B
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- Prior art keywords
- stationary
- ring
- seal box
- seat
- mechanically
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
- F16J15/3472—Means for centering or aligning the contacting faces
Abstract
The present invention relates to a kind of mechanically-sealing apparatus, including seal box, be provided with and the rotating seat of rotating ring and the stationary seat of stationary ring be installed, throw-out collar is provided between stationary seat and seal box；Rotating seat is fastenedly connected with axle sleeve by fastening bolt, and is rotated together；Supporting and space is left between the inwall of stationary seat and the outer wall of axle sleeve, the stationary ring radial direction adjustment mechanism for overcoming stationary ring and stationary seat to sink by gravity is installed in supporting and space, external adjustable stationary ring nose balance mechanism is provided with the outer face of seal box.The present invention is for large-diameter mechanical seal compensation stationary ring because gravity causes dynamic and static ring decentraction problem, and the not uniform problem of frictional force on the unequal axial circumferencial direction of cause of sealing ring circumferential clearance is sealed between stationary ring and stationary seat, simultaneously, for solving separately-loaded and integrated mechanical sealing, the problem of not changing in the working depth of spring during installing and using because of the adjustment of the pump housing, and damage spring element can be changed in time under not detaching equipment in use.
Description
Technical field
The present invention relates to mechanical seal field, is to be related to a kind of mechanically-sealing apparatus in particular.
Background technology
At present, domestic and international large dredger uses L-type rubber seal device with pump shaft sealing device, and its operation principle is
Static 3 L-type rubber blankets 101 and the dynamic friction of axle sleeve 104 of rotation, are connected by pressing plate 102 with annular seal space 103, in L-type
Between rubber seal provide high pressure clean water to lubricate and obstruct pumped medium, using rubber natural resiliency and its attach
Spring provide wear-compensating and reach sealing purpose, see Fig. 1.This sealing device adaptation condition narrow range, service life is not
Stable, actual life is mostly 1 to 6 month, and by beat, vibration, sharp particle and solid particle erosion, marine creature are attached
The influence of operating mode, be pumped, causes sealing using effect unstable, eccentric wear and violent abrasive wear frequently occurs and causes system
Service life shortens (actual life is mostly 1~6 month).Time-consuming more, the cycle length of maintenance dismounting of large-scale dredge pump, is reduced
The utilization rate of equipment and installations of dredge pump, substantial amounts of maintenance fund is not only expended, also slattern dredger many valuable engineering time.
In existing mechanical seal structure, compensation stationary ring is mostly unbraced structure, especially large-diameter (300 millimeters of ∮ with
On) the alloy seal ring of mechanical seal, because weight issue easily causes above and below stationary ring sealing ring that decrement is inconsistent, influence close
Seal effect and to not uniform on axial friction circumferencial direction, the final partially sealed failure of sealing ring, or seal face circumference by
Power is uneven to trigger seal failure leakage；The support of stationary ring is compensated as a difficult point in mechanical seal structure design.
In existing mechanical seal structure, after spring installation be a fixation and can not adjustment element, but special
Constrained on pump by pump body structure and installation dimension, it is impossible to ensure the stability of spring works height, this unstability is direct
Have influence on the spring pressure of mechanical seal.Spring force is mainly acted between sealing dynamic and static ring, is prevented equipment from starting, stopping or is situated between
Seal face is opened during matter pressure oscillation, compensation ring is followed end face and is applied closing force vertically, spring pressure is too small to be difficult to
Function as described above, otherwise cross the abrasion of conference aggravation sealing ring, have influence on the reliability and service life of whole mechanical seal.
Especially separately-loaded mechanical seal, pump chamber and the front and rear adjustment gap of impeller are big, the work of spring when mechanical seal is installed
Make height because the impeller clearance of pump adjusts to change, spring pressure is cannot get a stable design data, thus turn into machine
A difficult point in tool design of Sealing Structure.
In addition, applicant be submitted to application before to patent retrieval referral centre of State Intellectual Property Office have submitted on
The search report of the application is asked, docket G1611175, and the patent type quoted in search report is all " A " file,
It is exactly background technology file, that is, reacts some technical characteristics of claim or a part of file of relevant prior art；
CN201858359U, CN201215106Y, CN2542859, WO2015009150A1, JP2010060105A,
WO2012002812A1；Immediate documents are CN201858359U in the result of search report, on a kind of band two
The resistance to mechanical seal of shaking of the large dredger of level protection device, can not overcome stationary ring and stationary seat because of gravity in this kind of mechanical seal
The problem of sinking causes eccentric wear and violent abrasive wear and causes system service life to shorten.It is specifically designed for this invention
A kind of mechanically-sealing apparatus.
The content of the invention
The present invention provides one kind for large-diameter mechanical seal compensation to solve technical problem present in known technology
Stationary ring is because gravity causes dynamic and static ring decentraction problem, and sealing sealing ring circumferential clearance is unequal between stationary ring and stationary seat
The not uniform problem of frictional force on axial circumferencial direction is caused, ensures the stability and reliability of capabilities of user devices, while is not being torn open
It can arbitrarily be adjusted in the case of unloading single unit system, change flexible member, seal face is reached the ideal value of design than pressure；And
It is effectively guaranteed the concentricity of rotating ring and stationary ring and the mechanically-sealing apparatus of followability.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：
A kind of mechanically-sealing apparatus, the mechanically-sealing apparatus are installed in dredger on the pump shaft of dredge pump, including with dredge pump
The seal box of sealed connection, the axle sleeve being arranged in seal box on dredge pump axle, rotating ring is installed in seal box
Rotating seat and the stationary seat for being provided with stationary ring, it is provided between rotating ring and rotating seat, stationary ring and stationary seat and realizes the close of floating seal
Seal and the stop pin I for preventing rotation；The stationary seat is arranged in seal box, quiet by sealing ring axial slip and sealing
Throw-out collar is provided between ring seat and seal box, the throw-out collar is connected by connecting bolt with seal box, the throw-out collar and stationary seat it
Between be additionally provided with stop pin II, one end of the axle sleeve in seal box is connected with the positioning sleeve on pump shaft, the other end and dredge pump
The impeller hub of impeller end is connected, and is sealed by sealing ring；The rotating seat is fastenedly connected with axle sleeve, and with pump shaft
Rotate；Intercepter plate is provided between seal box and rotating seat；It is empty that support is left between the inwall of the stationary seat and the outer wall of axle sleeve
Between, the stationary ring radial direction adjustment mechanism for overcoming stationary ring and stationary seat to sink by gravity is installed in the supporting and space；In seal box
Outer face be provided with external adjustable stationary ring nose balance mechanism, the stationary ring nose balance mechanism is used for outside the seal box
Side freely adjusts the nose balance power being applied on the stationary seat.
The present invention can also use following technical measures：
The stationary ring radial direction adjustment mechanism includes the support set between supporting and space internal axle sleeve and stationary seat；The branch
One end of support set is connected with seal box；The other end upper semicircumference of the support set is provided with wedge shape adjustment supporting mechanism.
For the wedge shape adjustment supporting mechanism at least provided with one, each wedge shape adjustment supporting mechanism is evenly distributed on support set
Upper semicircumference end face on, it is symmetrical along center line, at the same when it is described wedge shape adjustment supporting mechanism for it is multiple when, at least two
It is individual to be centrally located in the region of 45 ° of line both sides.
The wedge shape adjustment supporting mechanism includes wedge-shaped adjusting block, and the support set is provided with what is coordinated with wedge-shaped adjusting block
Lozenges；The upper surface of the wedge-shaped adjusting block is embedded with the rolling support component being bonded with stationary seat inwall；The wedge shape is adjusted
Monoblock is linked together with support set by adjusting screw.
The rolling support component uses ball, and the upper surface of the wedge-shaped adjusting block is provided with the groove of setting-in ball.
Installation step is provided with the inner side axis hole of the seal box, the support set includes installation portion and supporting part, described
Installation portion is inserted into installation step；The supporting part installation wedge shape adjustment supporting mechanism.
Stationary ring compensation component includes support pin, and the support pin includes spring mountings, location division and slotting
Dress portion, the cartridge part of the support pin are inserted into the mounting hole of gland, and the spring mountings of support pin are inserted into sealing
In the pilot hole of case, spring is set with the spring mountings of the support pin in pilot hole, the bullet in seal box
Spring holds out against throw-out collar.
Stop pin II is provided between the throw-out collar and stationary seat.
Jackscrew is in axial direction additionally provided with the gland.
The present invention has the advantages and positive effects of：Because the present invention uses above-mentioned technical proposal, there is advantages below：
1st, the present invention be provided with the stationary ring radial direction adjustment mechanism for overcoming stationary ring to sink by gravity ensure that to greatest extent it is dynamic,
The pairing stability of stationary ring, dynamic and static ring all the time on same axle center, can be ensured that the running parameter of sealing is steady in working condition
It is fixed reliable, extend the service life of dynamic and static ring；
2nd, rotating seat separates with outer shaft in the present invention, and diverse location has the positioning hole coordinated with rotating seat on outer shaft,
Adjusted according to the change of dredge pump size, fasten and position by screw, mode can adjust by this separately-loaded, mechanical seal can be made
Device is easy for installation；
3rd, adjust pad is provided between gland and seal box, therefore within the specific limits, can freely adjust its length.
4th, being extruded because gland is formed to spring, gland is connected by adjustment bolt with seal box, in not device for disassembling,
Spring can freely be changed.
5th, spring belongs to external in the present invention, and the working condition of observable spring, can pinpoint the problems in time at any time, spring knot
Structure overall structure is simple, practical reliable.
6th, the present invention can the dynamic source of additional belt equipment, realize the highly automated adjustment of spring works.
To sum up, overall structure of the present invention is simple, convenience in transport and in-site installation, is adapted to various equipment mounting conditions.Not
It can arbitrarily be adjusted in the case of dismounting single unit system, change flexible member, seal face is reached the ideal value of design than pressure；And
And it is effectively guaranteed the concentricity and followability of rotating ring and stationary ring；After mounting, encounter problems detachable, it is convenient and swift, protect
The reliability and maintenance convenience of the device are demonstrate,proved.
Brief description of the drawings
Fig. 1 is the structural representation that Dredge Pump's use L-type rubber seal in the prior art；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is wedge shape adjustment supporting mechanism sectional view in the present invention；
Fig. 4 is wedge-shaped adjusting block structural representation；
Fig. 5 is wedge shape adjustment supporting mechanism distribution map；
Fig. 6 is the sectional view of stop pin II in the present invention；
Fig. 7 is this Fig. 2 side structure schematic view；
Fig. 8 is that seal box is measured when carrying out mechanical seal mounting and adjusting to the actual size H of axle sleeve schematic diagram；
Fig. 9 is the measurement position of Steel Ruler and mark schematic diagram when carrying out mechanical seal mounting and adjusting；
Figure 10 is the schematic diagram of locked position A of the rotating seat on outer shaft when carrying out mechanical seal mounting and adjusting；
Figure 11 is the schematic diagram that rotating seat is integrated with outer shaft design；
Figure 12 is to connect stationary seat force analysis figure in non-matted state.
In figure：1st, pump shaft；2nd, axle sleeve；3rd, stationary ring radial direction adjustment mechanism；5th, wedge shape adjustment supporting mechanism；6th, stationary ring is axially mended
Repay mechanism 10, internal axle sleeve；20th, outer shaft；21st, sealing ring；23rd, rotating seat；24th, rotating ring；26th, stop pin I；27th, fastening bolt；
29th, positioning hole；30th, stationary seat；31st, stationary ring；40th, throw-out collar；41st, connecting bolt；42nd, stop pin II；50th, support set；502nd, pacify
Dress portion；503rd, supporting part；51st, wedge-shaped adjusting block；501st, groove；52nd, ball；53rd, adjusting screw；60th, gland；61st, spiral shell is connected
Bolt；62nd, adjust pad；63rd, spring；64th, support pin；65th, jackscrew；66th, stationary ring compensation component；70th, seal box；71st, install
Step；72nd, pilot hole；80th, intercepter plate；81st, clamping screw；90th, dredge pump；100th, impeller end；110th, slurries；120th, positioning sleeve.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows：
The present embodiment illustrates by exemplified by mechanically-sealing apparatus used on large dredger dredge pump, refers to Fig. 2
To Fig. 7, a kind of mechanically-sealing apparatus of large dredger dredge pump, the mechanically-sealing apparatus is installed on the pump shaft of dredge pump in dredger
On 1, including the seal box 70 being tightly connected with dredge pump 90, its main function are to make a whole set of mechanical seal stationary part and dredge pump
90 fix, and stationary ring 31 is not rotated by the rotation of rotating ring 24；The axle sleeve 2 being arranged in seal box on dredge pump axle, axle sleeve
Effect be pump shaft not by the attrition and attack of extraneous factor, for supporting and connecting the other parts part of mechanical seal；
Being provided with seal box 70 and is provided with the stationary seat 30 of stationary ring 31, rotating ring 24 and rotating seat at the rotating seat 23 of rotating ring 24
23rd, the stop pin I 26 for realizing the sealing ring 21 of floating seal and preventing from rotating, stationary ring are provided between stationary ring 31 and stationary seat 30
The sealing function reached to pump cavity fluid is bonded with the anchor ring of rotating ring；The stationary seat 30 is arranged in seal box 70, is relied on
The axial slip of sealing ring 21 and sealing, are provided with throw-out collar 40, the throw-out collar passes through connecting bolt between stationary seat 30 and seal box 70
41 are connected with seal box；Stop pin II 42, the sides of stop pin II 42 and seal box 70 are provided between the throw-out collar and stationary seat
It is slidably matched, opposite side coordinates with stationary seat 30, and its main function is the rotation for preventing stationary seat 30 to be servo-actuated ring seat 23 and turned
It is dynamic；One end of internal axle sleeve 10, outer shaft 20 in seal box is connected with the positioning sleeve 120 on pump shaft, the other end and dredge pump
The impeller hub of impeller end 100 be connected, and sealed by sealing ring 21；The rotating seat is fastenedly connected with axle sleeve, and with
Pump shaft rotates together；Rotating ring 24 rotates with the rotation of axle sleeve 2 when mechanical seal works, and is closely pasted with two anchor rings of stationary ring 31
Close, rotating ring 24 and stationary ring 31 are on same axle center, a dynamic quiet sealing function reached to pump cavity fluid；Seal box 70 is with moving
Intercepter plate 80 is provided between ring seat 23；The main function of intercepter plate 80 be to make between seal box 70 and dynamic and static ring formed one compared with
For closed space, the frictional heat that interior flushing water walks dynamic and static ring by this spatial band is mixed in slurries 110, makes sound
Ring is adequately cooled and lubricated；To be effectively guaranteed the concentricity of rotating ring and stationary ring and followability, the stationary seat
Supporting and space is left between inwall and the outer wall of axle sleeve, is provided with the supporting and space and overcomes stationary ring and stationary seat because under gravity
Heavy stationary ring radial direction adjustment mechanism 3；Seal face is reached the ratio pressure of design, ensure sealing effectiveness；In the outer end of seal box 70
Face is provided with external adjustable stationary ring nose balance mechanism 6, and main function is to provide balancing force to stationary ring 31.
The present invention can also use following technical measures：
The stationary ring radial direction adjustment mechanism 3 includes the support set 50 between supporting and space internal axle sleeve and stationary seat 30；
One end of the support set and seal box are closely coupled, to provide enough support forces to support under the gravity of stationary ring and stationary seat
It is heavy；The other end upper semicircumference of the support set is provided with wedge shape adjustment supporting mechanism 5；The wedge shape adjustment supporting mechanism 5 wraps
Wedge-shaped adjusting block 51 is included, the support set is provided with the lozenges coordinated with wedge-shaped adjusting block；The upper table of the wedge-shaped adjusting block
Face is embedded with the rolling support component 52 being bonded with stationary seat inwall；Rolling support component can roll with the movement of stationary seat
It is dynamic, the double action of support and sliding is served, the frictional force of rolling support is small, and abrasion is low, service life length, and can realize
The function of automatic aligning；The wedge-shaped adjusting block is linked together with support set by adjusting screw 53, passes through adjusting screw 53
Adjustable stationary ring 31 and rotating ring 24, seal box it is concentric, make dynamic and static ring can be all the time on same axle center in working condition, guarantee
The running parameter of sealing is reliable and stable, extends the service life of dynamic and static ring.
In order to reach frictional force minimum, abrasion is minimum, and the rolling support component 52 uses ball, the wedge-shaped adjusting block
51 upper surface is provided with the groove 501 of setting-in ball.
The wedge shape adjustment supporting mechanism 5 is at least provided with one, preferably three in the present embodiment, three wedge shape adjustment supports
Mechanism is evenly distributed on the upper semicircumference end face of support set.
Installation step 71 is provided with the inner side axis hole of the seal box 70, the support set 50 includes installation portion 502 and branch
Support part 503, the installation portion are inserted into installation step 71；The supporting part installation wedge shape adjustment supporting mechanism 5.
The axle sleeve 2 can both use integrative-structure, can also use Split type structure, the preferred Split type structure of the present embodiment,
Including internal axle sleeve 10 and outer shaft 20, the joint gap sealing ring 21 between internal axle sleeve 10 and outer shaft 20 seals.
The rotating seat 23 and axle sleeve can use integrative-structure, can also use Split type structure, and the present embodiment is preferred
Split type structure, the rotating seat 23 are fastenedly connected with axle sleeve 2 by the fastening bolt 27 being radially arranged；And corresponding described axle
Put and be provided with the various sizes of positioning hole 29 of two or more rows, the joint gap between rotating seat 23 and rotating ring 24 is provided with
Sealing ring 21.
Figure 12 is referred to, in the case of unsupported, stationary ring can sink large-diameter stationary ring because of gravity, cause stationary ring
It is uneven to slide sealing ring decrement, stationary ring upper end (a-quadrant) sealing ring frictional force reduces, or even can disappear, and may directly lead
Mechanical seal leakage is caused, the increase of stationary ring lower end (B area) sealing ring frictional force, hinders spring effect in the balancing force on stationary ring,
Balancing force is reduced or is disappeared, partial end-face may be caused to reveal.The sinking of stationary ring also results in dynamic and static ring matching trim
Change, reduce the area of matching trim, spring pressure increase, frictional force skewness, have a strong impact on mechanical seal
Reliability and service life.
By taking large-diameter mechanical seal as an example, influenceed by cavity size, stainless steel parts wall thickness is relatively thin, and processing is loaded tired
Difficulty, it is yielding after processing, and common support structure has suitable strict requirements for the dimensional tolerance of part, this is caused to production
It is greatly difficult.And supporting construction of the present invention is less demanding to the size of part, maximize favourable factors and minimize unfavourable ones, both reduced the tired of production and processing
Difficult and cost realizes the concentric effect of dynamic and static ring again, and does not influence the movable of stationary ring.
In said structure, the adjustable stationary ring nose balance mechanism 6 includes being arranged on the gland 60 of seal box outer end, institute
Gland is stated to be connected with the outer face of seal box 70 by bolt 61；Adjustment is provided between gland 60 and seal box 70 outer face
Pad 62, adjust pad 62 can be superimposed by multiple pads and formed, and reach adjustment spring work by increasing or decreasing pad quantity
Make the purpose of height, i.e. adjustment is applied to the nose balance power on stationary seat 30；In axial direction it is additionally provided with the gland 60
Jackscrew 65, the main function of jackscrew 65 is to support the not flexural deformation of gland 60, so as to ensure the working depth of all springs 63
Unanimously；Stationary ring compensation component 66 is laid with the outer face circumferencial direction of the seal box 70.
The stationary ring compensation component includes support pin 64, and one end of the support pin is inserted on gland 60, support
The other end of pin 64 is inserted into the pilot hole 72 of seal box, is set with spring 63 in the support pin in pilot hole,
The spring top clamping throw-out collar 40 in seal box, the effect of support pin 64 can make the not flexural deformation of spring 63.
Mechanical seal of the present invention is that spring 63 provides balancing force by flexible member, overcome compensation ring auxiliary seal ring 21 with
Frictional force between seal box 70, compensation ring is closely adhered to the end face of uncompensated ring, form seal face first closure
Power, when main frame is full of pressure medium and starts working, seal face can be made to produce closing force, set so that seal face reaches
The ratio pressure of meter, realizes the dynamic sealing of convection body slurries 110.
Apparatus of the present invention install convenient, actual life up to 3 years or higher, are avoided because frequently changing sealing system
Caused utilization rate of equipment and installations is low, a large amount of human and material resources and security risk of maintenance dismounting consumption.Overall structure letter of the present invention
It is single, convenience in transport and in-site installation, it is adapted to various equipment mounting conditions.Can arbitrarily it be adjusted in the case where not dismantling single unit system
Whole, replacing flexible member, makes seal face reach the ideal value of design than pressure；And it is effectively guaranteed the same of rotating ring and stationary ring
Heart degree and followability；After mounting, encounter problems detachable, it is convenient and swift, it ensure that the reliability of the device and maintenance are convenient
Property.
Former excavating pump L-type rubber seal structure is as shown in figure 1, its operation principle is 3 static L-type rubber blankets and rotation
The axle sleeve dynamic friction turned, high pressure clean water is provided between L-type rubber seal to lubricate and obstruct pumped medium, utilizes rubber
The natural resiliency of glue and its incidental spring provide wear-compensating and reach sealing purpose.This sealing structure service life
Short, actual life is mostly 1 to 3 month.And apparatus of the present invention install convenient, actual life up to 3 years or higher, keep away
The a large amount of human and material resources and safety that utilization rate of equipment and installations is low, maintenance dismounts consumption caused by frequently changing sealing system are exempted from
Risk.
Further illustrate that mechanical seal installation adjusting method is as follows：
(1) seal box that prior assembling is completed is encased on dredge pump 90, from impeller end 100 by internal axle sleeve 10 and outer shaft
20 penetrate on pump shaft 1 successively, and the actual size H of measurement seal box 70 to axle sleeve 2 (impeller end) performs record, sees Fig. 8.
(2) Steel Ruler is put into (by adjust pad) from the end face of seal box 70, be deep on axle sleeve, see that Steel Ruler is being carved
Position on degree line simultaneously makes a record, and sees Fig. 9, (red paint, white paint and blue paint are carried out with the paint of different colours respectively in the present embodiment
Mark).
(3) outer shaft 2 is removed, according to locked position A of the size H adjustment rotating seats 23 actually measured on outer shaft 2
Position and adjust pad 62 quantity, see Figure 10.
(4) rotating ring adjusted is combined into outer shaft 2 from impeller end 100 and rotating seat 23 is penetrated on pump shaft 1, with positioning
Set 120 and impeller demolition ring are brought into close contact.
(5) impeller is attached on pump shaft, impeller demolition ring, mechanical seal, impeller is brought into close contact in place.
(6) position of graduation mark is checked again for (see Fig. 9), if changed because of the locking of impeller, if it happens
Change (be more than 1 millimeter), can use increases adjust pad 62 come correcting spring power, and the bolt on gland 60 is tightened after adjustment
61。
(7) after mechanical seal installs, intercepter plate 80 is fixed on seal box 70 with clamping screw 81.
It is of the invention in summary, there is advantages below：
1st, the present invention be provided with the stationary ring radial direction adjustment mechanism for overcoming stationary ring to sink by gravity ensure that to greatest extent it is dynamic,
The pairing stability of stationary ring, dynamic and static ring all the time on same axle center, can be ensured that the running parameter of sealing is steady in working condition
It is fixed reliable, extend the service life of dynamic and static ring.
2nd, rotating seat separates with outer shaft in the present invention, and diverse location has the positioning hole coordinated with rotating seat on outer shaft,
Adjusted according to the change of dredge pump size, fasten and position by screw, mode can adjust by this separately-loaded, mechanical seal can be made
Device is easy for installation.
3rd, adjust pad is provided between gland and seal box, therefore within the specific limits, can freely adjust its length.
4th, being extruded because gland is formed to spring, gland is connected by adjustment bolt with seal box, in not device for disassembling,
Spring can freely be changed.
5th, spring belongs to external in the present invention, and the working condition of observable spring, can pinpoint the problems in time at any time, spring knot
Structure overall structure is simple, practical reliable.
6th, the present invention can the dynamic source of additional belt equipment, realize the highly automated adjustment of spring works.
To sum up, overall structure of the present invention is simple, convenience in transport and in-site installation, is adapted to various equipment mounting conditions.Not
It can arbitrarily be adjusted in the case of dismounting single unit system, change flexible member, seal face is reached the ideal value of design than pressure；And
And it is effectively guaranteed the concentricity and followability of rotating ring and stationary ring；After mounting, encounter problems detachable, it is convenient and swift, protect
The reliability and maintenance convenience of the device are demonstrate,proved；Ensure that the running parameter of sealing is reliable and stable, extend dynamic and static ring uses the longevity
Life.
It is described above to be only the preferred embodiments of the present invention, any formal limitation not is made to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (10)
1. a kind of mechanically-sealing apparatus, the mechanically-sealing apparatus is arranged on pump shaft (1), including seal box (70), axle sleeve (2),
The rotating seat (23) for being provided with rotating ring (24) and the stationary seat (30) for being provided with stationary ring (31) in seal box (70), rotating ring
(24) it is provided between rotating seat (23), stationary ring (31) and stationary seat (30) and realizes the sealing ring (21) of floating seal and anti-rotation stop
Dynamic stop pin I (26)；The stationary seat (30) be arranged on seal box (70) in, by sealing ring (21) axial slip with it is close
Envelope, is provided with throw-out collar (40) between stationary seat (30) and seal box (70), the throw-out collar (40) passes through connecting bolt (41) and sealing
Case (70) connects；It is characterized in that：Supporting and space is left between the inwall of the stationary seat (30) and the outer wall of axle sleeve (2), institute
State the stationary ring radial direction adjustment mechanism (3) for being provided with supporting and space and overcoming stationary ring (31) and stationary seat (30) to sink by gravity；
The outer face of seal box (70) is provided with external adjustable stationary ring nose balance mechanism (6), and the stationary ring nose balance mechanism (6) is used
In freely adjusting the nose balance power that is applied on the stationary seat (30) on the outside of the seal box (70).
2. mechanically-sealing apparatus according to claim 1, it is characterised in that：The stationary ring radial direction adjustment mechanism (3) includes
Support set (50) between supporting and space internal axle sleeve (2) and stationary seat (30)；One end of the support set (50) and sealing
Case (70) is connected；The other end upper semicircumference of the support set (50) is provided with wedge shape adjustment supporting mechanism (5).
3. mechanically-sealing apparatus according to claim 2, it is characterised in that：The wedge shape adjustment supporting mechanism (5) is at least
Provided with one, each wedge shape adjustment supporting mechanism is evenly distributed on the upper semicircumference end face of support set (50), along center line pair
Claim distribution.
4. mechanically-sealing apparatus according to claim 2, it is characterised in that：The wedge shape adjustment supporting mechanism (5) includes
Wedge-shaped adjusting block (51), the support set (50) are provided with the lozenges coordinated with wedge-shaped adjusting block (51)；The wedge shape adjustment
The upper surface of block (51) is embedded with the rolling support component (52) being bonded with stationary seat (30) inwall；The wedge-shaped adjusting block (51)
Linked together with support set (50) by adjusting screw (53).
5. mechanically-sealing apparatus according to claim 4, it is characterised in that：The rolling support component (52) is using rolling
Pearl, the upper surface of the wedge-shaped adjusting block (51) are provided with the groove (501) of setting-in ball.
6. mechanically-sealing apparatus according to claim 2, it is characterised in that：Set at the inner side axis hole of the seal box (70)
There is installation step (71), the support set (50) includes installation portion (502) and supporting part (503), installation portion (502) inserting
In installation step (71)；Supporting part (503) the installation wedge shape adjustment supporting mechanism (5).
7. mechanically-sealing apparatus according to claim 1, it is characterised in that：The adjustable stationary ring nose balance mechanism
(6) gland (60) for being arranged on seal box (70) outer end is included, the gland (60) passes through bolt (61) and seal box (70)
Outer face connects；Adjust pad (62) is provided between the gland (60) and seal box (70) outer face；The seal box (70)
Outer face circumferencial direction on be laid with stationary ring compensation component (66).
8. mechanically-sealing apparatus according to claim 7, it is characterised in that：The stationary ring compensation component (66) includes support
Pin (64), the support pin (64) include spring mountings, location division and cartridge part, and the support pin (64) is inserted
Dress portion is inserted into the mounting hole of gland (60), and the spring mountings of support pin (64) are inserted into the pilot hole (72) of seal box
It is interior, spring (63) is set with the spring mountings of the support pin (64) in pilot hole (72), in seal box (70)
The spring (63) holds out against throw-out collar (40).
9. mechanically-sealing apparatus according to claim 1, it is characterised in that：Between the throw-out collar (40) and stationary seat (30)
Provided with stop pin II.
10. mechanically-sealing apparatus according to claim 7, it is characterised in that：On the gland (60) in axial direction also
Provided with jackscrew (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936326.4A CN106523707B (en) | 2016-11-01 | 2016-11-01 | A kind of mechanically-sealing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936326.4A CN106523707B (en) | 2016-11-01 | 2016-11-01 | A kind of mechanically-sealing apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN106523707A CN106523707A (en) | 2017-03-22 |
| CN106523707B true CN106523707B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610936326.4A Active CN106523707B (en) | 2016-11-01 | 2016-11-01 | A kind of mechanically-sealing apparatus |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355541A (en) * | 2017-07-28 | 2017-11-17 | 丹东克隆集团有限责任公司 | Nuclear power safety injection pump mechanically-sealing apparatus drag ring and the fit structure of its ring seat |
| CN107676485B (en) * | 2017-11-07 | 2024-04-16 | 昆山密友机械密封有限公司 | High-temperature horizontal mechanical sealing structure |
| CN107842455A (en) * | 2017-11-23 | 2018-03-27 | 国家电网公司 | A kind of radial direction self-compensation type sealing |
| CN108194638B (en) * | 2018-01-09 | 2022-05-03 | 上海康晟航材科技股份有限公司 | Mechanical sealing device and application thereof |
| DE102018202681B3 (en) * | 2018-02-22 | 2019-07-04 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal assembly with split shaft sleeve |
| CN110939738B (en) * | 2019-12-05 | 2022-06-07 | 中国航发四川燃气涡轮研究院 | Quick-release end face sealing device |
| CN114060522A (en) * | 2021-11-10 | 2022-02-18 | 浙江环誉泵业科技有限公司 | Independent floating type static ring with compact structure and mechanical seal comprising same |
| CN115013090B (en) * | 2022-07-06 | 2023-04-07 | 四川航天中天动力装备有限责任公司 | Air bleeding mechanism for turbine engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3007090B1 (en) * | 1999-03-16 | 2000-02-07 | 日本ピラー工業株式会社 | Mechanical seal |
| US6485023B2 (en) * | 2000-05-04 | 2002-11-26 | Flowserve Management Company | Split mechanical face seal |
| CN2542859Y (en) * | 2002-01-18 | 2003-04-02 | 胡滨 | Mechanical sealing element for dredge pump |
| CN201215106Y (en) * | 2008-04-10 | 2009-04-01 | 石家庄强大泵业集团有限责任公司 | Sealing mechanism between excavating pump principal axis and pump body |
| CN201202809Y (en) * | 2008-06-11 | 2009-03-04 | 于信太 | Stationary ring adjustable mechanical sealing device |
| CN201858359U (en) * | 2010-11-05 | 2011-06-08 | 天津市合润科技有限责任公司 | Anti-vibration mechanical seal provided with secondary protective device and used for large dredge boat |
| CN206159474U (en) * | 2016-11-01 | 2017-05-10 | 天津市合润科技有限责任公司 | Mechanical seal device |
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2016
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| CN106523707A (en) | 2017-03-22 |
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