CN206159474U - Mechanical seal device - Google Patents

Abstract

The utility model relates to a mechanical seal device, the rotating seat of rotating ring and the stationary seat of installing quiet ring are installed to the seal box that includes, are equipped with the throw -out collar between stationary seat and seal box, the rotating seat passes through the fastening bolt fastening connection with the axle sleeve, and rotates together, leave support space between the inner wall of stationary seat and the outer wall of axle sleeve, install in the support space and overcome quiet ring sum stationary seat because of the radial guiding mechanism of the submerged quiet ring of gravity, be equipped with external adjustable quiet annular shaft at the outer terminal surface of seal box and construct to compensator. The utility model discloses result in sound ring decentraction problem to the quiet ring of big diameter of axle mechanical seal compensation because of the gravity reason to and not equipartition problem of frictional force is sent on the axial circumferencial direction to sealed sealing washer circumferential backlash unequality between quiet ring and stationary seat, simultaneously, is used for solving segmental type and cartridge -type mechanical seal, the work height that installs and use the in -process spring not because of the adjustment of the pump body changes, and in use can in time change damage spring element's problem down at disassembling equipment not.

Description

A kind of mechanically-sealing apparatus

Technical field

This utility model is related to mechanical seal field, is to be related to a kind of mechanically-sealing apparatus in particular.

Background technology

At present, using L-type rubber seal device, its operation principle is domestic and international large dredger pump shaft sealing device Static 3 road L-type rubber blanket 101 and the dynamic friction of axle sleeve 104 of rotation, are connected, in L-type by pressing plate 102 with annular seal space 103 Between rubber seal provide high pressure clean water to lubricate and intercept 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 mostly is 1 to 6 month, by beat, vibrates, and sharp particle and solid particle erosion, marine creature are attached The impact of operating mode, is pumped, causes sealing using effect unstable, frequently eccentric wear and violent abrasive wear are occurred and cause system Service life shortens (actual life mostly is 1～6 month).The maintenance dismounting time-consuming many, cycle of large-scale dredge pump is long, reduces The utilization rate of equipment and installations of dredge pump, substantial amounts of maintenance fund is not only expended, also slattern dredger many preciousness engineering times.

In existing mechanical seal structure, compensation stationary ring mostly is unbraced structure, especially large-diameter (300 millimeters of ∮ with On) the alloy seal ring of mechanical seal, because weight issue easily causes the upper and lower decrement of stationary ring sealing ring inconsistent, affect close Envelope effect and to uniform in axial circle of frictional force circumferential direction, the partially sealed failure of final sealing ring, or seal face circumference are received Power is uneven to cause seal failure leakage；The support of compensation stationary ring becomes a difficult point in mechanical seal structure design.

In existing mechanical seal structure, spring install after be a fixation and can not adjustment element, but special Constrained with installation dimension by pump body structure on pump, 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, is enable compensation ring to follow end face and is applied closing force vertically, and spring pressure is too small to be difficult to Function as described above, otherwise cross the abrasion that conference aggravates sealing ring, have influence on the reliability and service life of whole mechanical seal.

Especially separate loading mechanical seal, adjusts gap greatly, the work of spring when mechanical seal is installed before and after pump chamber and impeller Make height to change because the impeller clearance of pump adjusts, make spring pressure cannot get a stable design data, thus become 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 with regard to The retrieval report request of the application, docket G1611175, the patent type quoted in retrieval 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 retrieval report, with regard to a kind of band two The large dredger of level protection device cannot overcome stationary ring and stationary seat because of gravity with resistance to mechanical seal of shaking in this kind of mechanical seal The problem that sinking causes eccentric wear and violent abrasive wear and causes system service life to shorten.Create special for this this utility model Design a mechanism sealing device.

The content of the invention

This utility model provides a kind of for large-diameter mechanical seal to solve technical problem present in known technology Compensation stationary ring causes dynamic and static ring decentraction problem because of gravity, and seals sealing ring circumferential clearance not between stationary ring and stationary seat Equalization causes the not uniform problem of frictional force on axial circumferencial direction, ensures the stability and reliability of capabilities of user devices, while Can arbitrarily adjust in the case of not dismantling single unit system, change flexible member, make seal face that the ideal value of design is reached than pressure； And it is effectively guaranteed the concentricity and the mechanically-sealing apparatus of followability of rotating ring and stationary ring.

This utility model 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 being tightly connected, the axle sleeve being arranged in seal box on dredge pump axle is provided with rotating ring in seal box Rotating seat and the stationary seat for being provided with stationary ring, are provided between rotating ring and rotating seat, stationary ring and stationary seat and realize the close of floating seal Seal and prevent rotate stop pin I；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；Support is left between the inwall of the stationary seat and the outer wall of axle sleeve empty Between, the stationary ring radial direction adjustment mechanism for overcoming stationary ring and stationary seat to sink because of 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.

This utility model can also adopt following technical measures：

The stationary ring radial direction adjustment mechanism includes the support set being located between supporting and space internal axle sleeve and stationary seat；Described 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.

The wedge shape adjusts supporting mechanism at least provided with one, and each wedge shape adjustment supporting mechanism is evenly distributed on support set Upper semicircumference end face on, it is symmetrical along centrage, at the same when the 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 and wedge-shaped adjusting block cooperation Lozenges；The upper surface of the wedge-shaped adjusting block is embedded with the rolling support component fitted with stationary seat inwall；The wedge shape is adjusted Monoblock is linked together with support set by adjusting screw.

The rolling support component adopts ball, the upper surface of the wedge-shaped adjusting block to be 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 in installation step；The supporting part installs wedge shape adjustment supporting mechanism.

Stationary ring compensation component includes support pin, and the support pin includes spring mountings, location division and inserts Dress portion, the cartridge part of the support pin is inserted in the installing 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.

This utility model has the advantages and positive effects that：Because this utility model adopts above-mentioned technical proposal, have Advantages below：

1st, this utility model is provided with and overcomes stationary ring to ensure to greatest extent because of the stationary ring radial direction adjustment mechanism that gravity sinks The pairing stability of dynamic and static ring, in making dynamic and static ring in working order can all the time on same axle center, it is ensured that the work ginseng of sealing Number is reliable and stable, extends the service life of dynamic and static ring；

2nd, rotating seat is separated with outer shaft in this utility model, and diverse location has the positioning coordinated with rotating seat on outer shaft Hole, adjusts according to the change of dredge pump size, positions by screw fastening, by the adjustable mode of this separate loading, can make machinery Sealing device is easy for installation；

3rd, adjust pad is provided between gland and seal box, therefore within the specific limits, can freely adjusts its length.

4th, extrude 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 this utility model, at any time the working condition of observable spring, can pinpoint the problems in time, bullet Spring structure overall structure is simple, practical reliable.

6th, this utility model can the dynamic source of additional belt equipment, realize the highly automated adjustment of spring works.

To sum up, this utility model overall structure is simple, convenient to transport and in-site installation, is adapted to various equipment mounting conditions. Can arbitrarily adjust in the case where single unit system is not dismantled, change flexible member, make seal face that the ideal of design is reached than pressure Value；And it is effectively guaranteed the concentricity and followability of rotating ring and stationary ring；After mounting, encounter problems detachable, it is convenient fast It is prompt, it is ensured that the reliability and maintenance convenience of the device.

Description of the drawings

Fig. 1 is the structural representation that Dredge Pump's adopt L-type rubber seal in prior art；

Fig. 2 is this utility model structural representation；

Fig. 3 is wedge shape adjustment supporting mechanism sectional view in this utility model；

Fig. 4 is wedge-shaped adjusting block structural representation；

Fig. 5 is wedge shape adjustment supporting mechanism scattergram；

Fig. 6 is the sectional view of stop pin II in this utility model；

Fig. 7 is the side structure schematic view of this Fig. 2；

Fig. 8 is that seal box is measured when carrying out mechanical seal mounting and adjusting to the schematic diagram of actual size H of axle sleeve；

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, spiral shell is fastened Bolt；29th, location hole；30th, stationary seat；31st, stationary ring；40th, throw-out collar；41st, connecting bolt；42nd, stop pin II；50th, support set；502、 Installation portion；503rd, supporting part；51st, wedge-shaped adjusting block；501st, groove；52nd, ball；53rd, adjusting screw；60th, gland；61st, connect Bolt；62nd, adjust pad；63rd, spring；64th, support pin；65th, jackscrew；66th, stationary ring compensation component；70th, seal box；71st, pacify Dress step；72nd, pilot hole；80th, intercepter plate；81st, clamping screw；90th, dredge pump；100th, impeller end；110th, serosity；120th, position Set.

Specific embodiment

For the content of the invention of the present utility model, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinated Accompanying drawing describes in detail as follows：

As a example by the present embodiment is by mechanically-sealing apparatus used on large dredger dredge pump, illustrate, refer to Fig. 2 To Fig. 7, a kind of mechanically-sealing apparatus of large dredger dredge pump, the mechanically-sealing apparatus are 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 is 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 by extraneous factor attrition and attack, for the other parts part for supporting be connected 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 sealing ring 21 for realizing floating seal and the stop pin I 26 for preventing rotation, stationary ring are provided between stationary ring 31 and stationary seat 30 Fit with the anchor ring of rotating ring and reach sealing function to pump cavity fluid；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 between stationary seat 30 and seal box 70, the throw-out collar passes through connecting bolt 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, its Main Function is to prevent stationary seat 30 to be servo-actuated the rotation of ring seat 23 and turn It is dynamic；One end of axle sleeve 10,20 in seal box is connected with the positioning sleeve 120 on pump shaft, the impeller end of the other end and dredge pump 100 impeller hub is connected, and is sealed by sealing ring 21；The rotating seat is fastenedly connected with axle sleeve, and with pump shaft Rotate；Rotating ring 24 is rotated with the rotation of axle sleeve 2 when mechanical seal works, and is brought into close contact with two anchor rings of stationary ring 31, rotating ring 24 and stationary ring 31 on same axle center, a dynamic quiet sealing function reached to pump cavity fluid；Seal box 70 and rotating seat 23 Between be provided with intercepter plate 80；The Main Function of intercepter plate 80 is to make formation one between seal box 70 and dynamic and static ring more closed Space, interior flushing water is mixed in serosity 110 by the frictional heat that this spatial band walks dynamic and static ring, obtains dynamic and static ring Sufficiently cooling and lubrication；To be effectively guaranteed the concentricity and followability of rotating ring and stationary ring, the inwall of the stationary seat with Supporting and space is left between the outer wall of axle sleeve, be provided with the supporting and space overcome stationary ring and stationary seat because gravity sink it is quiet Ring radial direction adjustment mechanism 3；Seal face is set to reach the ratio pressure of design, it is ensured that sealing effectiveness；It is provided with the outer face of seal box 70 External adjustable stationary ring nose balance mechanism 6, Main Function is to provide balancing force to stationary ring 31.

This utility model can also adopt following technical measures：

The stationary ring radial direction adjustment mechanism 3 includes the support set 50 being located between supporting and space internal axle sleeve and stationary seat 30； One end of the support set is closely coupled with seal box, to provide enough support forces come under the gravity for supporting 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 is wrapped 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 fitted with stationary seat inwall；Rolling support component can be rolled with the movement of stationary seat, Serve support and sliding dual function, the frictional force of rolling support is little, weares and teares low, service life into, and can realize from The function of dynamic regulation of mental activities；The wedge-shaped adjusting block is linked together with support set by adjusting screw 53, can by adjusting screw 53 Adjustment stationary ring 31 is concentric with rotating ring 24, seal box, can all the time on same axle center in making dynamic and static ring in working order, it is ensured that close The running parameter of envelope is reliable and stable, extends the service life of dynamic and static ring.

It is minimum in order to reach frictional force, wear and tear minimum, the rolling support component 52 adopts ball, the wedge-shaped adjusting block 51 upper surface is provided with the groove 501 of setting-in ball.

The wedge shape adjusts supporting mechanism 5 at least provided with one, and preferably three in the present embodiment, three wedge shape adjustment are supported 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 props up Support part 503, the installation portion is inserted in installation step 71；The supporting part installs wedge shape adjustment supporting mechanism 5.

The axle sleeve 2 can both adopt integrative-structure, it would however also be possible to employ 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 is sealed.

The rotating seat 23 and axle sleeve can adopt integrative-structure, it would however also be possible to employ Split type structure, the present embodiment is preferred Split type structure, the rotating seat 23 is fastenedly connected with axle sleeve 2 by the fastening bolt 27 being radially arranged；And the described axle of correspondence Put and be provided with the various sizes of location hole 29 of two or more rows, the joint gap between rotating seat 23 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 Sliding sealing ring decrement is uneven, and stationary ring upper end (a-quadrant) sealing ring frictional force reduces, or even can disappear, and may directly lead Mechanical seal leakage, the increase of stationary ring lower end (B regions) sealing ring frictional force is caused to hinder balancing force of the spring effect 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, the area for making matching trim reduces, spring pressure increase, frictional force skewness has a strong impact on mechanical seal Reliability and service life.

By taking large-diameter mechanical seal as an example, affected by cavity size, stainless steel parts wall thickness is relatively thin, processing is installed 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 this utility model supporting construction is not high to the dimensional requirement of part, maximize favourable factors and minimize unfavourable ones, both reduced production and processing Difficulty and cost realize the concentric effect of dynamic and static ring again, and do not affect 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 State gland to be connected with the outer face of seal box 70 by bolt 61；Adjustment is provided between the gland 60 and the outer face of seal box 70 Pad 62, adjust pad 62 can be made up of multiple pads superposition, and by increasing or decreasing pad quantity adjustment spring work is reached Make the purpose of height, i.e. adjustment and be 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, is supported The other end of pin 64 is inserted in 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.

This utility model mechanical seal is that spring 63 provides balancing force by flexible member, overcomes compensation ring auxiliary seal ring Frictional force between 21 and seal box 70, makes compensation ring be closely adhered to the end face of uncompensated ring, forms seal face initial Closing force, when main frame is full of pressure medium and starts working, can make seal face produce closing force, so that seal face reaches To the ratio pressure of design, the dynamic sealing of convection cell serosity 110 is realized.

This utility model device install convenient, actual life is up to 3 years or higher, it is to avoid because frequently changing sealing Utilization rate of equipment and installations is low caused by system, maintenance dismounts consumption a large amount of human and material resources and security risk.This utility model entirety Simple structure, convenient transport and in-site installation, are adapted to various equipment mounting conditions.Can appoint in the case where single unit system is not dismantled Meaning adjustment, replacing flexible member, make seal face that the ideal value of design is reached than pressure；And it is effectively guaranteed rotating ring and stationary ring Concentricity and followability；After mounting, encounter problems detachable, it is convenient and swift, it is ensured that the reliability of the device and maintenance Convenience.

Former excavating pump L-type rubber seal structure is as shown in figure 1, its operation principle is 3 static road L-type rubber blankets and rotation The axle sleeve dynamic friction for turning, provides high pressure clean water to lubricate and intercept pumped medium, using rubber between L-type rubber seal The natural resiliency of glue and its incidental spring provide wear-compensating and reach sealing purpose.This sealing structure service life Short, actual life mostly is 1 to 3 month.And this utility model device install convenient, actual life is up to 3 years or more It is high, it is to avoid because frequently change low utilization rate of equipment and installations caused by sealing system, maintenance dismounting consumption a large amount of human and material resources and Security risk.

Further illustrate mechanical seal installation adjusting method as follows：

(1) will in advance assemble the seal box that completes to be encased on dredge pump 90, from impeller end 100 by internal axle sleeve 10 and outer shaft 20 penetrate into successively on pump shaft 1, and measurement seal box 70 performs record to actual size H of axle sleeve 2 (impeller end), sees Fig. 8.

(2) Steel Ruler is put into from the end face of seal box 70 (by adjust pad), is deep on axle sleeve, see that Steel Ruler is being carved Position on degree line simultaneously makes a record, and sees Fig. 9, and respectively with the paint of different colours, (red paint, white paint and blue paint are carried out in the present embodiment Mark).

(3) outer shaft 2 is removed, according to locked position A of the size H adjustment rotating seat 23 of actual measurement 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 (see Fig. 9) of graduation mark is checked again for, if change because of the locking of impeller, if it happens Change (is more than 1 millimeter), can adjust the bolt tightened on gland 60 after finishing using adjust pad 62 is increased come correcting spring power 61。

(7) after mechanical seal is installed, intercepter plate 80 is fixed on seal box 70 with clamping screw 81.

This utility model in sum, with advantages below：

1st, this utility model is provided with and overcomes stationary ring to ensure to greatest extent because of the stationary ring radial direction adjustment mechanism that gravity sinks The pairing stability of dynamic and static ring, in making dynamic and static ring in working order can all the time on same axle center, it is ensured that the work ginseng of sealing Number is reliable and stable, extends the service life of dynamic and static ring.

2nd, rotating seat is separated with outer shaft in this utility model, and diverse location has the positioning coordinated with rotating seat on outer shaft Hole, adjusts according to the change of dredge pump size, positions by screw fastening, by the adjustable mode of this separate loading, can make machinery Sealing device is easy for installation.

3rd, adjust pad is provided between gland and seal box, therefore within the specific limits, can freely adjusts its length.

4th, extrude 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 this utility model, at any time the working condition of observable spring, can pinpoint the problems in time, bullet Spring structure overall structure is simple, practical reliable.

6th, this utility model can the dynamic source of additional belt equipment, realize the highly automated adjustment of spring works.

To sum up, this utility model overall structure is simple, convenient to transport and in-site installation, is adapted to various equipment mounting conditions. Can arbitrarily adjust in the case where single unit system is not dismantled, change flexible member, make seal face that the ideal of design is reached than pressure Value；And it is effectively guaranteed the concentricity and followability of rotating ring and stationary ring；After mounting, encounter problems detachable, it is convenient fast It is prompt, it is ensured that the reliability and maintenance convenience of the device；Ensure that the running parameter of sealing is reliable and stable, extend making for dynamic and static ring Use the life-span.

The above is only, to preferred embodiment of the present utility model, not to make any formal to this utility model Restriction, it is every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations with Modification, belongs in the range of technical solutions of the utility model.

Claims (10)

1. a kind of mechanically-sealing apparatus, the mechanically-sealing apparatus are arranged on axle (1), including seal box (70), axle sleeve (2), position 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) sealing ring (21) and anti-rotation stop for realizing floating seal is provided with and rotating seat (23), stationary ring (31) and stationary seat (30) between Dynamic stop pin I (26)；The stationary seat (30) in the seal box (70), 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) is by 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 and stationary ring radial direction adjustment mechanism (3) for overcoming stationary ring (31) and stationary seat (30) to sink because of gravity is installed in supporting and space； 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) in the seal box (70) outside.

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：Wedge shape adjustment supporting mechanism (5) is at least One is provided with, each wedge shape adjustment supporting mechanism is evenly distributed on the upper semicircumference end face of support set (50), along centrage pair Claim distribution.

4. mechanically-sealing apparatus according to claim 2, it is characterised in that：Wedge shape adjustment supporting mechanism (5) includes Wedge-shaped adjusting block (51), the support set (50) is 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) fitted with stationary seat (30) inwall；The wedge-shaped adjusting block (51) Linked together by adjusting screw (53) with support set (50).

5. mechanically-sealing apparatus according to claim 2, it is characterised in that：The rolling support component (52) is using rolling Pearl, the upper surface of the wedge-shaped adjusting block (51) is 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)；The supporting part (503) installs 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) including the gland (60) for being arranged on seal box (70) outer end, the gland (60) is by 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：Stationary ring compensation component (66) is including support Pin (64), the support pin (64) includes spring mountings, location division and cartridge part, and the support pin (64) is inserted Dress portion is inserted in the installing 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) It is provided with stop pin II.

10. mechanically-sealing apparatus according to claim 1, it is characterised in that：On the gland (60) in axial direction also It is provided with jackscrew (65).