CN107701501A - A kind of pump shaft seal structure with wearing clearance compensation - Google Patents
A kind of pump shaft seal structure with wearing clearance compensation Download PDFInfo
- Publication number
- CN107701501A CN107701501A CN201710873814.XA CN201710873814A CN107701501A CN 107701501 A CN107701501 A CN 107701501A CN 201710873814 A CN201710873814 A CN 201710873814A CN 107701501 A CN107701501 A CN 107701501A
- Authority
- CN
- China
- Prior art keywords
- friction pair
- ring
- ring friction
- connection ring
- rear end
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of pump shaft seal structure with wearing clearance compensation, belong to Modern fluid mechanical field.The pump shaft seal structure of the present invention, including pump cover body, screw plug, preceding connection ring, back clevis, stationary ring friction pair, rotating ring friction pair；The hydraulic medium pressurization filled in and screwed in after liquid injection hole to being full of in liquid storage cavity is screwed, stationary ring friction pair is pressed closer rotating ring friction pair forward.After between stationary ring friction pair and rotating ring friction pair contact surface because abrasion and gap becomes big, will screw plug continues to screw in downwards, to the hydraulic medium repressurization being full of in liquid storage cavity, compensates the friction gap between stationary ring friction pair and rotating ring friction pair.The pump shaft seal structure of the present invention, sealing effect is good, and compensation wear adjustment is simple, when friction gap compensates, hydraulic medium contacts to stationary ring friction pair rear end for face, ensure that the direction of motion of stationary ring friction pair axially forward, the reliability of mechanical seal is improved, extends machine envelope service life.
Description
Technical field
The present invention relates to a kind of pump shaft seal structure with wearing clearance compensation, belong to Modern fluid mechanical field.
Background technology
Sealing is a part indispensable on pump, is that pump is normal, the steady, guarantee of safe operation.Sealing system ensures
Medium will not leak, and protect site environment, while it also avoid endangering to caused by people due to the dielectric leakage such as poisonous and harmful
Evil.Traditional pump shaft seal structure is as shown in figure 1, including spring, static components and moving ring assembly, static components are arranged on pump cover
Chamber body, static components and pump cover body remains stationary；Moving ring assembly is fixed with pump shaft axle sleeve, and moving ring assembly rotates with pump shaft
And rotate, it is fitted close between static components and the friction pair of moving ring assembly, passes through what is formed between two friction pair abutted surfaces
Nanoscale gap ensures sealing effectiveness.During pump long time running, static components contact with the friction pair of moving ring assembly
Between face gap can be made to become big because of abrasion, if the friction pair for changing static components and moving ring assembly need to dismantle part compared with
More, replacement operation is relatively complicated.The method that conventional art solves compensation abrasion is pacified in static components and pump cover body junction
Equipped with spring, spring passes through the wearing clearance between stretch compensation static components and moving ring assembly friction pair.But the structure is deposited
In following shortcoming, spring easily fails under long compressive state, so as to ensure wearing clearance compensation function；In addition, and by
Connection between spring and static components contacts for point, and spring carries out easily making static components and moving ring assembly during stretch compensation
Friction pair between contact surface out-of-flatness dock, so as to cause leakage phenomena such as, reduce mechanical seal service life.
The content of the invention
It is an object of the invention to solve conventional pump to be compensated as wearing clearance using spring by the use of in sealing, spring be present
Easily failure, and contact surface out-of-flatness is docked between friction pair caused by the contact of spring point, so that sound czermak space increases failure,
The problems such as service life of reduction machine envelope, and a kind of pump shaft seal structure with wearing clearance compensation is provided.
The purpose of the present invention is achieved through the following technical solutions：
A kind of pump shaft seal structure with wearing clearance compensation of the present invention, including pump cover body, screw plug, preceding connection
Ring, back clevis, stationary ring friction pair, rotating ring friction pair；
The front end processing friction Submount of preceding connection ring, the rear end outer wall of preceding connection ring are machined with stepped positioning table；
The outer wall of back clevis is stepped cylinder face；
Rotating ring friction pair is fixed with pump shaft axle sleeve, the friction Submount of connection ring front end before stationary ring friction pair is fixed on
It is interior, the front end of the rear end insertion pump cover chamber body of preceding connection ring, and the stepped positioning of the outer wall by preceding connection ring rear end
Platform, connection ring is spacing backward with respect to pump cover body before making, and is provided between the annular contact surface of preceding connection ring and pump cover body close
Seal；Back clevis is fixed on the rear end of pump cover chamber body, connects before the less face of cylinder insertion of leading portion external diameter of back clevis
The inner ring of ring is connect, and sealing ring is placed between the less face of cylinder of back clevis leading portion external diameter and preceding connection ring inwall, makes two
Person joint seals；Ring is left between the vertical cascaded surface of back clevis outer wall and the vertical cascaded surface of preceding connection ring rear end outer wall
Shape liquid storage cavity；The outer wall of pump cover body is inwardly provided with the liquid injection hole connected with annular liquid storage cavity, when liquid injection hole and annular store up
When liquid air intracavitary is full of hydraulic medium, the mouth thread connection of liquid injection hole screws plug, and the screw-in depth of plug is screwed by control, quiet
Ring friction pair front end face presses closer the rear end face of rotating ring friction pair.
Operation principle
The hydraulic medium pressurization filled in and screwed in after liquid injection hole to being full of in liquid storage cavity is screwed, stationary ring friction pair is pressed closer forward
Rotating ring friction pair.After between stationary ring friction pair and rotating ring friction pair contact surface because abrasion and gap becomes big, will screw plug after
It is continuous to screw in downwards, to the hydraulic medium repressurization being full of in liquid storage cavity, compensate between stationary ring friction pair and rotating ring friction pair
Friction gap.
Connected between liquid injection hole and liquid storage cavity by small―gap suture, avoid when screw plug it is descending too fast when, from liquid injection hole to
The descending hydraulic medium of liquid storage cavity produces non axial thrust to the friction pair of static components, causes stationary ring friction pair to be rubbed with rotating ring
The problem of contact surface out-of-flatness is docked between wiping is secondary, so as to ensure that stationary ring friction pair is closely matched somebody with somebody with rotating ring friction pair axially forward
Close.
Beneficial effect
The pump shaft seal structure of the present invention, sealing effect is good, and compensation wear adjustment is simple, when friction gap compensates, liquid
Press medium to contact stationary ring friction pair rear end for face, ensure that the direction of motion of stationary ring friction pair axially forward, improve machinery
The reliability of sealing, extend machine envelope service life.
Brief description of the drawings
Fig. 1 is traditional pump shaft seal structure schematic diagram；
Fig. 2 is pump shaft seal structure schematic diagram of the present invention；
In figure, 1- back clevis；2- pump cover bodies；3- screws plug；Connection ring before 4-；5- stationary ring friction pairs；6- rotating rings rub
Wipe secondary.
Embodiment
Present disclosure is further described with reference to the accompanying drawings and examples.
Embodiment
A kind of pump shaft seal structure with wearing clearance compensation of the present invention, as shown in Fig. 2 including pump cover body 2, rotation
Tight plug 3, preceding connection ring 4, back clevis 1, stationary ring friction pair 5, rotating ring friction pair 6；
The front end processing friction Submount of preceding connection ring 4, the rear end outer wall of preceding connection ring 4 are machined with stepped positioning
Platform；
The outer wall of back clevis 1 is stepped cylinder face；
Rotating ring friction pair 6 is fixed with pump shaft axle sleeve, the friction pair installation of the front end of connection ring 4 before stationary ring friction pair 5 is fixed on
In seat, the front end of the inner chamber of rear end insertion pump cover body 2 of preceding connection ring 4, and the outer wall for passing through the preceding rear end of connection ring 4 is stepped
Positioning table, connection ring 4 is spacing backward with respect to pump cover body 2 before making, between preceding connection ring 4 and the annular contact surface of pump cover body 2
Sealing ring is installed；Back clevis 1 is fixed on the rear end of the inner chamber of pump cover body 2, the less cylinder of leading portion external diameter of back clevis 1
The inner ring of connection ring 4 before the insertion of face, and put between the less face of cylinder of the leading portion external diameter of back clevis 1 and the inwall of preceding connection ring 4
Sealing ring is put, seals the two joint；The vertical cascaded surface of the outer wall of back clevis 1 is vertical with the preceding rear end outer wall of connection ring 4
Annular liquid storage cavity is left between cascaded surface；The outer wall of pump cover body 2 is inwardly provided with the liquid injection hole connected with annular liquid storage cavity,
And connected between liquid injection hole and liquid storage cavity by small―gap suture；When being full of hydraulic medium in liquid injection hole and annular liquid storage cavity,
The mouth thread connection of liquid injection hole screws plug 3, the screw-in depth of plug 3 is screwed by control, the front end face of stationary ring friction pair 5 presses closer dynamic
The rear end face of ring friction pair 6.
Operation principle
The hydraulic medium that is full of in liquid storage cavity is pressurizeed after screwing the screw-in liquid injection holes of plug 3, makes stationary ring friction pair 5 tight forward
Push ring friction pair 6.After between stationary ring friction pair 5 and the contact surface of rotating ring friction pair 6 because abrasion and gap becomes big, it will screw
Plug 3 continues to screw in downwards, to the hydraulic medium repressurization being full of in liquid storage cavity, compensation stationary ring friction pair 5 and rotating ring friction
Friction gap between pair 6.
Avoid when screw plug 3 it is descending too fast when, the descending hydraulic medium from liquid injection hole to liquid storage cavity is to static components
Friction pair produces non axial thrust, causes the problem of contact surface out-of-flatness is docked between stationary ring friction pair 5 and rotating ring friction pair 6,
So as to ensure that stationary ring friction pair 5 is fitted close with rotating ring friction pair 6 axially forward.
Claims (2)
1. a kind of pump shaft seal structure with wearing clearance compensation, it is characterized in that：Including pump cover body, screw plug, preceding connection
Ring, back clevis, stationary ring friction pair, rotating ring friction pair；
The front end processing friction Submount of preceding connection ring, the rear end outer wall of preceding connection ring are machined with stepped positioning table；
The outer wall of back clevis is stepped cylinder face；
Rotating ring friction pair is fixed with pump shaft axle sleeve, preceding before stationary ring friction pair is fixed in the friction Submount of connection ring front end
The front end of the rear end insertion pump cover chamber body of connection ring, and the stepped positioning table of the outer wall by preceding connection ring rear end, make
Preceding connection ring is spacing backward with respect to pump cover body, and sealing ring is provided between the annular contact surface of preceding connection ring and pump cover body；
Back clevis is fixed on the rear end of pump cover chamber body, connection ring before the less face of cylinder insertion of leading portion external diameter of back clevis
Inner ring, and sealing ring is placed between the less face of cylinder of back clevis leading portion external diameter and preceding connection ring inwall, the two is connected
Place's sealing；Annular liquid storage is left between the vertical cascaded surface of back clevis outer wall and the vertical cascaded surface of preceding connection ring rear end outer wall
Cavity；The outer wall of pump cover body is inwardly provided with the liquid injection hole connected with annular liquid storage cavity, when liquid injection hole and annular liquid storage cavity
Interior when being full of hydraulic medium, the mouth thread connection of liquid injection hole screws plug, and the screw-in depth of plug, stationary ring friction are screwed by controlling
Secondary front end face presses closer the rear end face of rotating ring friction pair.
2. a kind of pump shaft seal structure with wearing clearance compensation as claimed in claim 1, it is characterized in that：Liquid injection hole and storage
Connected between liquid air chamber by small―gap suture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873814.XA CN107701501A (en) | 2017-09-25 | 2017-09-25 | A kind of pump shaft seal structure with wearing clearance compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873814.XA CN107701501A (en) | 2017-09-25 | 2017-09-25 | A kind of pump shaft seal structure with wearing clearance compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701501A true CN107701501A (en) | 2018-02-16 |
Family
ID=61176009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710873814.XA Pending CN107701501A (en) | 2017-09-25 | 2017-09-25 | A kind of pump shaft seal structure with wearing clearance compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340168A (en) * | 2018-10-22 | 2019-02-15 | 柳州酸王泵制造股份有限公司 | A kind of threaded single-end face integrated mechanically-sealing apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798455A4 (en) * | 2004-10-08 | 2009-08-05 | Nippon Pillar Packing | Static pressure type non-contact gas seal |
| CN101776152A (en) * | 2010-03-05 | 2010-07-14 | 北京化工大学 | Outside pressurized type dynamic and static pressure gas lubricating and sealing device |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN202707586U (en) * | 2011-11-18 | 2013-01-30 | 江苏国泉泵业制造有限公司 | Seal device of multiple-stage centrifugal pump |
-
2017
- 2017-09-25 CN CN201710873814.XA patent/CN107701501A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798455A4 (en) * | 2004-10-08 | 2009-08-05 | Nippon Pillar Packing | Static pressure type non-contact gas seal |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN101776152A (en) * | 2010-03-05 | 2010-07-14 | 北京化工大学 | Outside pressurized type dynamic and static pressure gas lubricating and sealing device |
| CN202707586U (en) * | 2011-11-18 | 2013-01-30 | 江苏国泉泵业制造有限公司 | Seal device of multiple-stage centrifugal pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340168A (en) * | 2018-10-22 | 2019-02-15 | 柳州酸王泵制造股份有限公司 | A kind of threaded single-end face integrated mechanically-sealing apparatus |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180216 |
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| WD01 | Invention patent application deemed withdrawn after publication |