[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN109578590A - A kind of hydraulic propeller axis mechanical seal - Google Patents

A kind of hydraulic propeller axis mechanical seal Download PDF

Info

Publication number
CN109578590A
CN109578590A CN201811623035.5A CN201811623035A CN109578590A CN 109578590 A CN109578590 A CN 109578590A CN 201811623035 A CN201811623035 A CN 201811623035A CN 109578590 A CN109578590 A CN 109578590A
Authority
CN
China
Prior art keywords
ring
flange
seal
face
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811623035.5A
Other languages
Chinese (zh)
Other versions
CN109578590B (en
Inventor
都森欣
曹云鹏
关键
胡益军
蔡昌莎
卓梓聿
陆晶妮
邹豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lopland Machinery Equipment (ningbo) Co Ltd
Original Assignee
Lopland Machinery Equipment (ningbo) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lopland Machinery Equipment (ningbo) Co Ltd filed Critical Lopland Machinery Equipment (ningbo) Co Ltd
Priority to CN201811623035.5A priority Critical patent/CN109578590B/en
Publication of CN109578590A publication Critical patent/CN109578590A/en
Application granted granted Critical
Publication of CN109578590B publication Critical patent/CN109578590B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/34Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/40Sealings between relatively-moving surfaces by means of fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

The invention discloses a kind of hydraulic propeller axis mechanical seals, including the primary seal, lip envelope and gas-flow closure being sequentially sleeved in shaft;Axially connecting mounting flange and seal chamber flange are arranged in shaft, primary seal is located at one end of seal chamber flange, the other end of seal chamber flange is connect with mounting flange, and lip seals the connecting end surface position for being located at mounting flange and seal chamber flange, and the inner sidewall of lip envelope is fitted in shaft;Gas-flow closure includes pneumatic tyre, pneumatic tyre is located on the inner hole of mounting flange, and pneumatic tyre is equipped with annular convex platform close to shaft side, the aeration aperture being connected to pneumatic tyre is additionally provided on mounting flange, when risk of leakage occurs for primary seal, it is filled with gas from aeration aperture, pneumatic tyre expands so that annular convex platform inside contracts and is sealed in shaft outer surface and prevents seawater from entering propeller cabin.A kind of hydraulic propeller axis mechanical seal disclosed by the invention has multiple-sealed structure, can guarantee stable, reliable sealing performance, and convenient for disassembly and assembly.

Description

A kind of hydraulic propeller axis mechanical seal
Technical field
The present invention relates to technical field of mechanical, specifically a kind of hydraulic propeller axis mechanical seals.
Background technique
Hydraulic propeller is a kind of novel driving tool of ship, it and Ship Power Equipment together, are used to propelling ship. Hydraulic propeller is that the spout part of propulsive mechanism is under water, and the reaction force driving ship generated using injection water is advanced A kind of propeller.It is made of water pump, pipeline, suction inlet and spout etc., and the injection direction of water flow can be changed by spout come real The manipulation of spot oceangoing ship.Hydraulic propeller is used as power with water pump, water is sucked from hull bottom hole, through side of a ship portion pipe, water after ship Direction discharge, the reaction force by water carry out propelling ship.
Traditional marine propeller sealing has following several forms, and one is the mechanical seals of rubber bellows;It is a kind of It is that individual 3 or 4 lips are sealed envelope;One is traditional packing seals.
Above-mentioned traditional sealing has the following deficiencies:
1, traditional rubber bellows mechanical seal, there are digestion periods for rubber bellows, and when replacement sealing, need entirety It replaces together, maintenance cost is high.Sealing performance is reduced with the aging of bellows.
2, individual 34 lip envelope, is suitable for slow-speed of revolution axis (the general revolving speed of hydraulic propeller is very high), the service life is short.
3, traditional packing seal, leakage rate is big, and service life is short, and consumption shaft power is big.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of be able to solve at least one in the defect that above-mentioned traditional machine is sealed The hydraulic propeller axis mechanical seal of kind defect, and it is convenient for disassembly and assembly, and sealing performance is stable, reliable.
The technical solution used in the present invention is: providing a kind of hydraulic propeller axis mechanical seal, including successively it is arranged Primary seal, lip envelope and gas-flow closure in shaft;Axially connecting mounting flange and sealing are arranged in the shaft Cell method is blue, and the primary seal is located at one end of seal chamber flange, and the other end of the seal chamber flange is connect with mounting flange, institute The connecting end surface position that lip envelope is located at mounting flange and seal chamber flange is stated, and the inner sidewall of lip envelope is fitted in shaft;It is described Gas-flow closure includes pneumatic tyre, and pneumatic tyre is located on the inner hole of mounting flange, and the pneumatic tyre is equipped with annular convex platform close to shaft side, It is additionally provided with the aeration aperture being connected to pneumatic tyre on mounting flange, when risk of leakage occurs for primary seal, gas is filled with from aeration aperture, Pneumatic tyre expands so that annular convex platform inside contracts and is sealed in shaft outer surface and prevents seawater from entering propeller cabin.
Further, the primary seal includes moving ring assembly and static components, and the seal chamber flange is far from Method for Installation Blue one end is equipped with the first mounting groove of indent, and the tail portion sealing of the static components is fitted in the first mounting groove, and quiet Compensation component is equipped between the tail end face of ring assemblies and the bottom surface of the first mounting groove, the moving ring assembly and shaft driving connect It connects, the seal face of the moving ring assembly is bonded to form primary seal flour milling with the seal face of static components.
Preferably, the compensation component includes several springs and several guide pins, the bottom edge of first mounting groove Several spring eyes circumferentially are uniformly provided with, one end of the guide pin is actively installed in spring eye, and the other end of guide pin is equipped with platform Rank ring, and step ring acts against on static components end face;Several springs are set on guide pin, and one end of spring is located at In spring eye, the other end is acted against on step ring.
Preferably, the static components include stationary ring, stationary seat and first press fitting cover board, the one of the stationary seat End sliding is located in the first mounting groove, and the other end is equipped with the second mounting groove of indent, and one end of the stationary ring is fitted in the second peace In tankage, first annular boss is equipped with outside the stationary ring, first press fitting cover board one end is connected on stationary seat, the other end It is pressed together on first annular raised head face, and is additionally provided with sealing ring between the first press fitting cover board and first annular boss.
As improved, the seal chamber flange is on the end face of the first mounting groove side circumferentially arranged with multiple limits Block, multiple limited blocks are equipped with limit pressing plate, and the limit pressing plate press fitting is fitted on stationary seat end face.Stationary seat and close Setting limited block carries out limit connection between envelope cell method orchid, so that the stationary ring of static components and seal chamber flange at a set of integrated form Component, the mounting structure of modular improve efficiency convenient for the installation and removal of entire mechanical seal.
Improved again, position corresponding with lip envelope is arranged with axle sleeve in the shaft, and the mounting flange is equipped with accommodating Slot, the lip envelope is fitted in accommodation groove, and the inner hole sleeve of lip envelope is mounted in the outside of axle sleeve.After axle sleeve structure setting, there can be guarantor It is not frayed to protect shaft outer surface.
Preferably, the moving ring assembly includes rotating ring, rotating seat and the second press fitting cover board, set on the rotating seat There is third mounting groove, one end sealing of the rotating ring is fitted in third mounting groove, and the other end of rotating ring and stationary ring are separate One end face paste of stationary seat closes to form primary seal flour milling;The rotating ring is equipped with the second annular convex platform, the second press fitting cover board One end is connected on rotating seat, and the other end is pressed together on the second annular convex platform end face, and the second press fitting cover board and the second convex annular Sealing ring is additionally provided between platform.
As improved, the mounting flange is equipped with annular groove and circumferentially close to a side end face of seal chamber flange The multiple threaded holes being arranged, the end face of the seal chamber flange is equipped with the position limiting convex ring equipped with annular groove sealing, described Seal chamber flange on be additionally provided with multiple through-holes, connection bolt is equipped in the through-hole, and the end for connecting bolt extends to spiral shell In pit.
Improved again, the lateral wall of the seal chamber flange is arranged with ring sleeve, and the ring sleeve is towards rotating ring Component direction extends up to rotating seat position.
It is improved again, adjusting bolt is additionally provided on the mounting flange, seal chamber end face of flange.
After using the above structure, compared with the prior art, the present invention has the following advantages:
1, in mechanical seal structure of the invention, other than the primary seal of sound ring assemblies composition is sealed seawater, It is also provided with lip simultaneously to seal, the silt in seawater can be stopped to enter primary seal flour milling, effective protection flour milling and sealing ring are not It is frayed, it improves service life, and the outside in shaft positioned at primary seal is also additionally arranged one of gas-flow closure as emergency Sealing is inflated once disclosure risk occurs for primary seal into gas-flow closure, and pneumatic tyre medial surface is promoted in gas-flow closure to be sealed in turn On axis, interim emergency sealing is carried out, prevents seawater from entering cabin.
2, all increase an annular gasket between rotating seat and shaft and between axle sleeve and shaft, holding screw is avoided to damage Hurt axis.
3, in sealing structure by the way of stationary ring compensation, setting compensating element, in this way will not be rotated with shaft, be compensated Active force is more steady, to guarantee the stability of sealing performance.
4, in the outermost end of stationary ring cavity, a ring sleeve is increased, it is therefore an objective to prevent sealing surface once and have and is slight Leakage, the droplet come out from sealing surface are disorderly got rid of;Another effect, prevents people from accidentally hand is protruded into or being touched the machine being currently running Envelope, avoids personal injury.
5, be provided on mounting flange and seal chamber flange and be adjusted axially bolt, when welded hull deforms to Adjust sealing geometric tolerance.
6, rotating ring, the design of stationary ring both ends clamped-in style prevent biggish vibration when vessel motion from causing carborundum ring abrasion gold Belong to drive pin, so as to cause seal failure.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of hydraulic propeller axis mechanical seal of the invention.
Fig. 2 is a kind of cross-sectional view of hydraulic propeller axis mechanical seal of the invention.
Fig. 3 is a kind of partial sectional view at another angle of hydraulic propeller axis mechanical seal of the invention.(main display limit Position block)
Fig. 4 is the structural schematic diagram of the static components in the present invention.
Fig. 5 is a kind of partial sectional view at another angle of hydraulic propeller axis mechanical seal of the invention.(main display peace Fill the adjusting bolt on flange)
Fig. 6 is a kind of partial sectional view at another angle of hydraulic propeller axis mechanical seal of the invention.It (mainly shows close Seal the adjusting bolt on cell method orchid)
Wherein, 100- shaft, 101- lip envelope, 102- pneumatic tyre, 102.1- annular convex platform, 1- mounting flange, 1.1- aeration aperture, 1.2- accommodation groove, 1.3- annular groove, 1.4- threaded hole, 2- seal chamber flange, the first mounting groove of 2.1-, 2.2- spring eye, 2.3- position limiting convex ring, 2.4- through-hole, 3- stationary ring, the first annular boss of 3.1-, 4- stationary seat, the second mounting groove of 4.1-, 5- first Press fitting cover board, 6- limited block, 6.1- limit pressing plate, 7- spring, 8- guide pin, 8.1- step ring, 9- axle sleeve, 10- rotating ring, The second annular protrusion of 10.1-, 11- rotating seat, 11.1- third mounting groove, 12- second are pressed cover board, 13- connection bolt, 14- ring Shape casing, 15- adjusting bolt, 16- annular gasket, 17- stop pin, 17.1- trundle, 18- threaded, 19- nylon protective case, 20- adjusting nut, 21- drive bolt, 22- fastening bolt, 23- inlet opening.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " connects Connect ", " equipped " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as indicating Or imply relative importance.
As shown in figs. 1 to 6, a kind of hydraulic propeller axis mechanical seal provided by the invention, including be sequentially sleeved at and turn Primary seal, lip envelope 101 and gas-flow closure, three parts mechanism on axis 100 are sleeved on outside shaft 100 and have sequentially formed three Sealing structure, the most importantly mechanical seal structure of primary seal, lip envelope are outside framework oil seal.
Axially connecting mounting flange 1 and seal chamber flange 2 are arranged in shaft 100, herein axial connection, specifically Refer to, mounting flange 1 is equipped with annular groove 1.3 and circumferentially arranged multiple spiral shells close to a side end face of seal chamber flange 2 Pit 1.4, the end face of seal chamber flange 2 is equipped with the position limiting convex ring 2.3 equipped with the sealing of annular groove 1.3, in position limiting convex ring 2.3 outside is further sleeved with sealing ring, so that forming seal point in this position after mounting flange 1 is connect with seal chamber flange 2. It is additionally provided with multiple through-holes 2.4 on seal chamber flange 2, connection bolt 13 is equipped in through-hole 2.4, and the end for connecting bolt 13 extends Into threaded hole 1.4, for mounting flange 1 and seal chamber flange 2 to be linked together.
Primary seal is located at one end of seal chamber flange 2, and the other end of seal chamber flange 2 is connect with mounting flange 1, lip envelope 101 are located at the connecting end surface position of mounting flange 1 and seal chamber flange 2, and the inner sidewall of lip envelope 101 is fitted in shaft 100.
In the present embodiment, as shown in Figure 1,3, at least one is equipped on the side wall of sealing ring flange 2 and is connected to its inner cavity Inlet opening 23, and it is high by the inlet opening 23 to be passed through the insulating liquid pressure ratio seawater pressure in 2 cavity of seal chamber flange.Into Fluid apertures 23 is either one or more to be evenly arranged on 2 outside of seal chamber flange.
The effect of insulating liquid: first is that insulating sea water, prevents external seawater from entering seal chamber;Since there are one in extraneous seawater The particulate matters such as a little silts, if into the flour milling of primary seal, it will sealing flour milling inordinate wear is caused, is leaked, so Pass through setting lip before contact with sea water to sealing surface and seal 101, the particulate matters such as sand grains can be stopped, prevent it from entering sealing Flour milling improves the service life of sealing surface.Second is that the effect of lubrication sealing surface.
Specifically, lip, which seals 101 structures, can be located at mounting flange 1 on the end face of 2 side of seal chamber flange, Seal chamber flange 2 can be located on the end face of 1 side of mounting flange, accommodation groove 1.2, lip envelope are equipped on mounting flange 1 101 are fitted in accommodation groove 1.2.Also, 101 corresponding positions are sealed with lip in shaft 100 and are arranged with axle sleeve 9, axle sleeve 9 passes through Holding screw is connect with shaft 100.Damage is generated in order to avoid holding screw is pressed on 100 surface of shaft simultaneously, so in axis An annular gasket 16 is increased between 100 outer surface of inside and shaft of set 9, the annular gasket 16 and axle sleeve 9 are fixed, in this way After setting, fastening screw is resisted against outside annular gasket 16, to realize connection of the holding screw indirectly with shaft 100, thus Shaft outer surface is avoided to be damaged.After axle sleeve 9 is connected to 100 outside of shaft, the inner hole sleeve of lip envelope 101 is mounted in the outside of axle sleeve 9, Also, the inner surface of lip envelope 101 is gently to contact with the outer surface of axle sleeve 9, because axle sleeve 9 is rotation, with table in lip envelope 101 There is friction in face, cannot have too big magnitude of interference when so equipped, as long as light contact can stop sand grains.
Gas-flow closure includes pneumatic tyre 102, and installation cavity is equipped on the inner hole side wall of mounting flange 1, and pneumatic tyre 102 is located at installation In the installation cavity of flange 1, and pneumatic tyre 102 close to 100 side of shaft integrally formed with annular convex platform 102.1,1 side wall of mounting flange On be additionally provided with the venthole 1.1 being connected to 102 inner cavity of pneumatic tyre, after machine envelope installs, which can connect tracheae, connect valve And pressure gauge, once machine envelope leakage, i.e., openable valve are inflated for pneumatic tyre.
The mechanical seal of this structure, when risk of leakage occurs for major seal, seawater can enter cabin, at this time from logical Gas is filled in stomata 1.1, pneumatic tyre 102 expands rapidly after inflation so that annular convex platform 102.1 inside contracts being pressed on for sealing and turns 100 outer surface of axis plays the role of sealing of temporarily meeting an urgent need, prevents seawater from entering propeller cabin.
Main seal portion, including moving ring assembly and static components, seal chamber flange 2 are equipped with far from one end of mounting flange 1 First mounting groove 2.1 of indent, the tail portion sealing of static components is fitted in the first mounting groove 2.1, and the tail of static components Compensation component is equipped between end surface and the bottom surface of the first mounting groove 2.1, compensation component is mainly used in static components flour milling quilt After abrasion, under the action of compensation component, the flour milling of static components is promoted to be fitted on the flour milling of moving ring assembly always, guarantees master The sealing performance of sealing.Moving ring assembly and shaft 100 are drivingly connected, the seal face of moving ring assembly and the sealed end of static components Face paste closes to form primary seal flour milling.In this structure, it is equipped with special threaded 18 in the bottom of the first mounting groove 2.1, in stationary ring The tail end face of component is equipped with the pin hole being equipped with threaded 18, protects in the outer cover of threaded 18 equipped with a nylon Set.The tail portion of static components refers to herein, and one end of sealed end flour milling is deviated from static components.
Compensation component includes several springs 7 and several guide pins 8, and the bottom of the first mounting groove 2.1 is circumferentially uniformly provided with Several spring eyes 2.2, one end of guide pin 8 are actively installed in spring eye 2.2, and the other end of guide pin 8 is equipped with step ring 8.1, And step ring 8.1 acts against on static components end face far from one end of guide pin 8.Several springs 7 are set in corresponding guiding On pin 8, and one end of spring 7 is located in spring eye 2.2, and the other end acts against on the step ring 8.1 of guide pin 8.In spring 7 8 structure of guide pin is set, the run-off the straight in forced compression of spring 7 can be effectively prevented, so that spring 7 acts on stationary ring The compensating action power of 3 tail portions is more steady.
Static components, including stationary ring 3, stationary seat 4 and the first press fitting cover board 5, one end sliding of stationary seat 4 are located at the first peace In tankage 2.1, the other end is equipped with the second mounting groove 4.1 of indent, and one end of stationary ring 3 is fitted in the second mounting groove 4.1, stationary ring 3 outsides are equipped with first annular boss 3.1, and first press fitting 5 one end of cover board is connected on stationary seat 4, and the other end is pressed together on the first ring On 3.1 end face of shape boss, specifically, one end of the first press fitting cover board 5 is pressed abd fixed on stationary seat 3 by fastening bolt 22 End face on, and this first press fitting cover board 5 on be additionally provided with annular stop flanging, annular stop flanging is pressed together on the first of stationary ring 3 On 3.1 end face of annular convex platform, realize being fixedly connected for stationary ring 3 and stationary seat 4, and first be pressed cover board 5 with it is first annular It is additionally provided with sealing ring between boss 3.1, forms sealed connection face.
This structure in the process of running, in order to enable stationary ring 3 with the flour milling frictional force of rotating ring effect under will not occur turn It is dynamic, so be provided with stop pin 17 in the bottom of the second mounting groove 4.1, it is equipped in the bottom of stationary ring 3 and is equipped with stop pin 17 Pin hole, because the stationary ring 3 in mechanical seal generallys use silicon carbide material, and stop pin 17 is then metal material, in pin hole Edge stress in position is frangible, so being also set with a nylon protective case 19 in the outside of stop pin 17, avoids the pin of metalwork The pin hole marginal position for directly hitting stationary ring 3, effectively reduces the risk of 3 fragmentation of stationary ring.
Seal chamber flange 2 is on the end face of 2.1 side of the first mounting groove circumferentially arranged with multiple limited blocks 6, multiple limits Position block 6 is equipped with limit pressing plate 6.1, and the limit press fitting of pressing plate 6.1 is fitted on 4 end face of stationary seat, and limited block 6 passes through connection Screw is fastened on the end face of stationary seat 4.The static components of integrated form are connected into this structure with limited block 6 and fastening screw, It is easy for removal and installation.
Moving ring assembly includes that rotating ring 10, rotating seat 11 and the second press fitting cover board 12, rotating seat 11 are equipped with third mounting groove 11.1, one end sealing of rotating ring 10 is fitted in third mounting groove 11.1, and the other end of rotating ring 10 and stationary ring 3 are far from stationary ring One end face paste of seat 4 closes to form primary seal flour milling.
As shown in Fig. 2, moving ring assembly specifically refers to the drive connection of shaft 100, on the lateral wall of rotating seat 11 Damage is generated circumferentially arranged with multiple driving bolts 21, while in order to avoid driving bolt 21 is pressed on 100 surface of shaft, so An annular gasket 16 is equally increased between 100 outer surface of inside and shaft of rotating seat 11, after being arranged in this way, drives spiral shell The end of bolt 21 is acted directly against on annular gasket 16, while meeting the driving rotation of rotating seat 11 of shaft 100, is effectively kept away It is injury-free to exempt from 100 outer surface of shaft.
Rotating ring 10 is equipped with the second annular convex platform 10.1, and second press fitting 12 one end of cover board is connected on rotating seat 11, another End is pressed together on 10.1 end face of the second annular convex platform, and specifically, one end of the second press fitting cover board 12 passes through fastening bolt 22 It is pressed abd fixed on the end face of rotating seat 11, and is additionally provided with annular stop flanging, annular stop pressure on the second press fitting cover board 12 While being pressed together on 10.1 end face of the second annular convex platform of rotating ring 10, realization rotating ring 10 is fixedly connected with rotating seat 11, and It is additionally provided with sealing ring between second press fitting cover board 12 and the second annular convex platform 10.1, forms sealed connection face.
In this moving ring assembly, it is equipped with trundle 17.1 in the bottom of third mounting groove 11.1, is equipped in the bottom of rotating ring 10 The pin hole being equipped with trundle 17.1, trundle 17.1 are mainly used for being driven rotating ring 10.And in trundle 17.1 Outside is equally set with a nylon protective case 19, and the pin of metalwork is avoided directly to hit the pin hole marginal position of rotating ring 10, Effectively reduce the risk of 10 fragmentation of rotating ring.
In the present embodiment, ring sleeve 14 is arranged in the lateral wall of seal chamber flange 2, and ring sleeve 14 is towards rotating ring group Part direction extends up to 11 position of rotating seat.The purpose of this ring sleeve 14 setting is to prevent from primary sealing area once to have slight let out Dew, the droplet come out from sealing face leakage are disorderly got rid of;Another effect prevents people from accidentally hand protrudes into or being touched and is currently running Machine envelope, avoids personal injury.
In structure of the invention, it is additionally provided on mounting flange 1, seal chamber flange 2 and adjusts bolt 15.
The present invention is in mechanical seal structure, and rotating ring 10, stationary ring 3 are all made of silicon carbide material, all metal parts in addition to Other than spring 7 is the stronger two phase stainless steel of corrosion resistance, and prior compensation part is also the part for being easy failure Spring 7 is then to have used the better Hastelloy of corrosion resistance, to improve the service life of mechanical seal.
Mechanically-sealing apparatus installation method of the invention is as follows:
1, first mounting flange 1 is sleeved in shaft 100, it is then mobile towards 200 position of cabin cavity wall, in advance in cabin Four parallel with shaft 100 and uniformly distributed along its circumferencial direction adjusting blocks 25 are welded on side, and on each adjusting block 25 Be respectively arranged with the positioning bolt 26 vertical with shaft 100, when mounting flange 1 close to cabin about 20mm apart from when, each adjusting block Corresponding positioning bolt 26 can be respectively held against the outer diameter of mounting flange 1 above 25, adjust the radial position of mounting flange 1.(such as Shown in Fig. 5)
Then the nylon adjusted the adjusting bolt 15 on mounting flange 1 on bolt 15 equipped with about 20mm long is adjusted to protect Set 27.With the positioning bolt 26 adjusted on bolt 15 and adjusting block 25 on mounting flange 1, the parallel of mounting flange 1 is adjusted Degree, verticality and concentricity, are tightened with fastening bolt 28 preset in cabin cavity wall 200, until 1 end face of mounting flange and cabin The distance between cavity wall 200 is equal to the length distance of nylon protective case 27.As shown in Figure 1, being connected in fastening bolt 28 with cabin There is also nylon protective case 27 between hole, avoids fastening bolt 28 and cabin wall from contacting, prevent electrochemical corrosion.
2, it is then cast between 1 end face of mounting flange and cabin cavity wall 200 with epoxy resin, it is complete to epoxy resin cure It at, the adjusting bolt 15 unscrewed on mounting flange 1 gently, avoids cabin wall and adjusts bolt 15 contacting, prevent the electricity of bolt Chemical attack.
Mounting flange 1 in this step refers to a component, i.e., gas-flow closure 102, lip envelope are pre-installed on mounting flange 1 The structures such as 101.It after the completion of equal epoxy resin cures, then by axle sleeve 9, is sleeved in shaft 100, toward 200 position of cabin cavity wall It is mobile, until guaranteeing then the holding screw on axle sleeve 9 is tightened in relative position in 101 contact of lip envelope.By static components set It is then mobile towards the position of mounting flange 1 in shaft 100, after working good to static components and mounting flange 1, lead to The adjusting bolt 15 crossed on sealing cell method orchid 2 regulates the depth of parallelism and verticality of static components, then again with connection bolt 13 Stationary seat 4 is connect fastening with mounting flange 1.This ensure that stationary ring 3 and 100 relative position of shaft, make the operation of machine envelope more Reliably.
3, moving ring assembly is installed, moving ring assembly is mobile toward 3 direction of stationary ring, until tightening dynamic in two sealing surface fittings Driving bolt 21 in ring seat 11 plays transmission effect then under the action of driving bolt 21.
4, the limited block on stationary seat is unloaded, machine envelope is installed.
After standby envelope installs, it will be welded on originally on the adjusting block in cabin cavity wall 200 25 and adjusting block 25 Bolt 26 is adjusted to cut away.
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair Bright to be not only limited to above embodiments, specific structure is allowed to vary, all institutes in the protection scope of demand for independence of the present invention The various change of work is within the scope of the invention.

Claims (10)

1. a kind of hydraulic propeller axis mechanical seal, it is characterised in that: the master including being sequentially sleeved on shaft (100) is close Envelope, lip envelope (101) and gas-flow closure (102);Be arranged in the shaft (100) axially connecting mounting flange (1) and Seal chamber flange (2), the primary seal are located at one end of seal chamber flange (2), the other end and peace of the seal chamber flange (2) Flange (1) connection is filled, the lip envelope (101) is located at the connecting end surface position of mounting flange (1) and seal chamber flange (2), and lip The inner sidewall of envelope (101) is fitted on shaft (100);The gas-flow closure includes pneumatic tyre (102), and pneumatic tyre (102) is located at installation On the inner hole of flange (1), and the pneumatic tyre (102) is equipped with annular convex platform (102.1) close to shaft (100) side, mounting flange (1) aeration aperture (1.1) being connected to pneumatic tyre (102) is additionally provided on, when risk of leakage occurs for primary seal, from aeration aperture (1.1) In be filled with gas, pneumatic tyre (102) expands so that annular convex platform (102.1) inside contracts and is sealed in shaft (100) outer surface and prevents seawater Into propeller cabin.
2. a kind of hydraulic propeller axis mechanical seal according to claim 1, it is characterised in that: the primary seal packet Moving ring assembly and static components are included, the seal chamber flange (2) is equipped with the first installation of indent far from the one end of mounting flange (1) Slot (2.1), the tail portion sealing of the static components is fitted in the first mounting groove (2.1), and the tail end face of static components Compensation component is equipped between the bottom surface of the first mounting groove (2.1), the moving ring assembly and shaft (100) are drivingly connected, institute The seal face for stating moving ring assembly is bonded to form primary seal flour milling with the seal face of static components.
3. a kind of hydraulic propeller axis mechanical seal according to claim 2, it is characterised in that: the compensation component Including several springs (7) and several guide pins (8), the bottom of first mounting groove (2.1) is circumferentially uniformly provided with several bullets The one end in spring hole (2.2), the guide pin (8) is actively installed in spring eye (2.2), and the other end of guide pin (8) is equipped with step Ring (8.1), and step ring (8.1) acts against on static components end face;Several springs (7) are set on guide pin (8), and One end of spring (7) is located in spring eye (2.2), and the other end acts against on step ring (8.1).
4. a kind of hydraulic propeller axis mechanical seal according to claim 2 or 3, it is characterised in that: the stationary ring Component includes stationary ring (3), stationary seat (4) and the first press fitting cover board (5), and one end sliding of the stationary seat (4) is located at the first peace In tankage (2.1), the other end is equipped with the second mounting groove (4.1) of indent, and one end of the stationary ring (3) is fitted in the second mounting groove (4.1) in, first annular boss (3.1) are equipped with outside the stationary ring (3), first press fitting cover board (5) one end is connected to quiet In ring seat (4), the other end is pressed together on first annular boss (3.1) end face, and the first press fitting cover board (5) and first annular boss (3.1) sealing ring is additionally provided between.
5. a kind of hydraulic propeller axis mechanical seal according to claim 4, it is characterised in that: the seal chamber flange (2) circumferentially arranged with multiple limited blocks (6) on the end face of the first mounting groove (2.1) side, on multiple limited blocks (6) Equipped with limit pressing plate (6.1), limit pressing plate (6.1) press fitting is fitted on stationary seat (4) end face.
6. a kind of hydraulic propeller axis mechanical seal according to claim 1, it is characterised in that: the shaft (100) Upper position corresponding with lip envelope (101) is arranged with axle sleeve (9), and the mounting flange (1) is equipped with accommodation groove (1.2), the lip Envelope (101) is fitted in accommodation groove (1.2), and the inner hole sleeve of lip envelope (101) is mounted in the outside of axle sleeve (9).
7. a kind of hydraulic propeller axis mechanical seal according to claim 2, it is characterised in that: the moving ring assembly Third mounting groove is equipped with including rotating ring (10), rotating seat (11) and the second press fitting cover board (12), the rotating seat (11) (11.1), the rotating ring (10) one end sealing be fitted in third mounting groove (11.1), the other end of rotating ring (10) with Stationary ring (3) closes to form primary seal flour milling far from one end face paste of stationary seat (4);The rotating ring (10) is equipped with the second annular convex platform (10.1), second press fitting cover board (12) one end is connected on rotating seat (11), and the other end is pressed together on the second annular convex platform (10.1) on end face, and sealing ring is additionally provided between the second press fitting cover board (12) and the second annular convex platform (10.1).
8. a kind of hydraulic propeller axis mechanical seal according to claim 1, it is characterised in that: the mounting flange (1) side end face close to seal chamber flange (2) is equipped with annular groove (1.3) and circumferentially arranged multiple threaded holes (1.4), the end face of the seal chamber flange (2) is equipped with the position limiting convex ring (2.3) equipped with annular groove (1.3) sealing, institute It is additionally provided with multiple through-holes (2.4) on the seal chamber flange (2) stated, connection bolt (13) is equipped in the through-hole (2.4), and connect The end of bolt (13) extends in threaded hole (1.4).
9. a kind of hydraulic propeller axis mechanical seal according to claim 1, it is characterised in that: the seal chamber flange (2) lateral wall is arranged with ring sleeve (14), and the ring sleeve (14) extends up to rotating ring towards moving ring assembly direction Seat (11) position.
10. a kind of hydraulic propeller axis mechanical seal according to claim 1, it is characterised in that: the Method for Installation It is additionally provided on blue (1), seal chamber flange (2) end face and adjusts bolt (15).
CN201811623035.5A 2018-12-28 2018-12-28 Mechanical seal for water spraying propeller shaft Active CN109578590B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811623035.5A CN109578590B (en) 2018-12-28 2018-12-28 Mechanical seal for water spraying propeller shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811623035.5A CN109578590B (en) 2018-12-28 2018-12-28 Mechanical seal for water spraying propeller shaft

Publications (2)

Publication Number Publication Date
CN109578590A true CN109578590A (en) 2019-04-05
CN109578590B CN109578590B (en) 2023-10-03

Family

ID=65933315

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811623035.5A Active CN109578590B (en) 2018-12-28 2018-12-28 Mechanical seal for water spraying propeller shaft

Country Status (1)

Country Link
CN (1) CN109578590B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821881A (en) * 2019-11-21 2020-02-21 江苏华青流体科技有限公司 Spring rotary pump sealing device for water jet propulsion unit
CN110816798A (en) * 2019-11-21 2020-02-21 江苏华青流体科技有限公司 Shaft sealing device for water jet propulsion unit
CN111623178A (en) * 2020-05-22 2020-09-04 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Fluid rotary joint sealing guarantee device and using method thereof
CN111828644A (en) * 2020-08-11 2020-10-27 国电大渡河检修安装有限公司 Combined sealing device
CN112145702A (en) * 2020-11-03 2020-12-29 江苏博利奥流体机械有限公司 Semi-split type shaft end mechanical sealing device
CN113324035A (en) * 2021-06-07 2021-08-31 台州海辰科技有限公司 Shaft lever mechanical sealing mechanism of high-temperature and high-pressure mixer for plastic production

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3319040A1 (en) * 1983-05-26 1984-11-29 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Rotating mechanical seal
CN2364276Y (en) * 1998-11-06 2000-02-16 中国人民解放军第四八零九工厂 Stern sealing device
CN201180790Y (en) * 2008-04-03 2009-01-14 江苏华阳科技开发有限公司 Turning place sealing device of underwater expansion, full-revolving electric thruster for vessel
CN107314110A (en) * 2017-08-11 2017-11-03 无锡市宏源弹性器材有限公司 Rubber antelabium friction pair type stern shaft seal gland
CN207762250U (en) * 2018-01-13 2018-08-24 东台市远洋船舶配件有限公司 Screw shaft of ship water lubrication sealing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3319040A1 (en) * 1983-05-26 1984-11-29 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Rotating mechanical seal
CN2364276Y (en) * 1998-11-06 2000-02-16 中国人民解放军第四八零九工厂 Stern sealing device
CN201180790Y (en) * 2008-04-03 2009-01-14 江苏华阳科技开发有限公司 Turning place sealing device of underwater expansion, full-revolving electric thruster for vessel
CN107314110A (en) * 2017-08-11 2017-11-03 无锡市宏源弹性器材有限公司 Rubber antelabium friction pair type stern shaft seal gland
CN207762250U (en) * 2018-01-13 2018-08-24 东台市远洋船舶配件有限公司 Screw shaft of ship water lubrication sealing device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821881A (en) * 2019-11-21 2020-02-21 江苏华青流体科技有限公司 Spring rotary pump sealing device for water jet propulsion unit
CN110816798A (en) * 2019-11-21 2020-02-21 江苏华青流体科技有限公司 Shaft sealing device for water jet propulsion unit
CN111623178A (en) * 2020-05-22 2020-09-04 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Fluid rotary joint sealing guarantee device and using method thereof
CN111828644A (en) * 2020-08-11 2020-10-27 国电大渡河检修安装有限公司 Combined sealing device
CN111828644B (en) * 2020-08-11 2024-03-12 国能大渡河检修安装有限公司 Combined sealing device
CN112145702A (en) * 2020-11-03 2020-12-29 江苏博利奥流体机械有限公司 Semi-split type shaft end mechanical sealing device
CN113324035A (en) * 2021-06-07 2021-08-31 台州海辰科技有限公司 Shaft lever mechanical sealing mechanism of high-temperature and high-pressure mixer for plastic production

Also Published As

Publication number Publication date
CN109578590B (en) 2023-10-03

Similar Documents

Publication Publication Date Title
CN109578590A (en) A kind of hydraulic propeller axis mechanical seal
CN209622050U (en) A kind of hydraulic propeller axis mechanical seal
CN109654230A (en) Hydraulic propeller mechanical sealing device used for pump
JP4892529B2 (en) Ship vertical shaft centrifugal pump and parts replacement method for ship vertical shaft centrifugal pump
CN103612735B (en) Propeller device with adjustable pitch
CN113815832B (en) Rim-driven semi-submerged propeller
CN201787069U (en) Dynamic sealing structure for stern shaft of underwater pressure-bearing shell
CN201517609U (en) Water-lubricated stern shaft end surface sealing device
CN205801474U (en) A kind of lowering or hoisting gear of the sonar for boats and ships
CN209622051U (en) Hydraulic propeller mechanical sealing device used for pump
CN110159664A (en) A kind of shafting thrust-compensating device
CN109027239B (en) Marine rudder stock double-sided lip-shaped sealing ring
CN204459160U (en) The multi-sealed stern shaft seal gland of complete section formula
CN208503031U (en) A kind of damping type total pressure oil-immersed pump
JPH10238495A (en) Blade-less impeller for submersible pump
CN111661291A (en) Sealing device for pod propeller
CN109114043A (en) A kind of manufacturing method of peripheral pump and the combination connecting component for peripheral pump
CN201705677U (en) Semi-open impeller submerged slurry pump
CN212869311U (en) Oil pump with support ring for heavy vehicle engine
CN108001649A (en) Underwater power pack and submersible
CN211820724U (en) Oil seal for outboard machine
CN113415397A (en) Light rotary unloading dry type cabin
CN218986929U (en) Rudder pushing structure for high-performance ship
CN221323340U (en) Knife gate valve with supporting structure
CN106321502B (en) A kind of emergent sealing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant