CN107143516A - A kind of elastic protective shaft sleeve - Google Patents
A kind of elastic protective shaft sleeve Download PDFInfo
- Publication number
- CN107143516A CN107143516A CN201710509886.6A CN201710509886A CN107143516A CN 107143516 A CN107143516 A CN 107143516A CN 201710509886 A CN201710509886 A CN 201710509886A CN 107143516 A CN107143516 A CN 107143516A
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- protective shaft
- center section
- gap
- elastic
- 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.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 41
- 210000003734 kidney Anatomy 0.000 claims description 17
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
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
- F04D29/04—Shafts or bearings, or assemblies thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of elastic protective shaft sleeve, including the protective shaft sleeve body being connected between pump shaft and axle sleeve；Described protective shaft sleeve body includes pressing the center section of normal size tolerance fit with axle sleeve；Described center section is provided at both ends with the edge by normal size tolerance fit with pump shaft；It is characterized in that：Several elastic telescopic grooves are provided with described center section；The first gap is formed between described center section and pump shaft；The second gap is formed between described edge and axle sleeve；The first described gap includes annular space；Described annular space is provided at both ends with cone space；The first described gap is more than the second gap；Structural strength is high, and stability is good, it is ensured that coordinate close between pump shaft and axle sleeve all the time so that magnetic force driving pump is safely and steadily run.
Description
Technical field
The present invention relates to protection device technical field, in particular to a kind of pump shaft with magnetic force driving pump with
Between axle sleeve, the deflection for expanding with heat and contract with cold and producing caused by the temperature change for preventing magnetic force driving pump pumped (conveying) medium so that axle
Set produces spalling and damages failure, the elastic protective shaft sleeve for causing magnetic force driving pump to be not normally functioning.
Background technology
Current almost all of magnetic force driving pump is in process of manufacture, the medium conveyed by different user scene
Temperature is different, the fit clearance between pump shaft and axle sleeve is different, causes the fit dimension between pump shaft and axle sleeve to be difficult
To effective and reasonable unified, it is impossible to manufacture is processed to pump shaft and axle sleeve using uniform sizes, and pump shaft and axle sleeve can not
Installation is interchangeable as general part, is easy to mistake its fit dimension when being transported to part, installation and maintenance and has influence on magnetic force driving pump
Maintenance, cause magnetic force driving pump to be unable to normal table safe operation；
If processing its fit dimension by normal temperature medium designs, the easy for installation, stable and reliable operation in normal temperature；But during high temperature due to
The coefficient of thermal expansion of pump shaft and axle sleeve is inconsistent, causes the fit clearance between pump shaft and axle sleeve to increase so that magnetic force driving pump is not
The stable safe operation of energy, has a strong impact on the service life of magnetic force driving pump；
If processing its fit dimension by high-temperature medium design, installed just under stable and reliable operation at high operating temperatures, but normal temperature
It is difficult to be assembled, because the material of axle sleeve is usually the broken material such as hard alloy or carborundum, it is easy in assembling
It is stuck to cause fragmentation or position is attached to；Some producers use the structure type of spring tensioner ring or spring expanding sleeve, but produce and add
Work is relatively difficult, it is necessary to using roll forming after wire cutting or particular manufacturing craft punching press, and fit dimension is difficult measurement and control,
Assembling and changing all cumbersome simultaneously；Also some producers use "O"-ring structure, but by the elastomeric material of "O"-ring
The influence of decay resistance and high and low temperature resistance, it is impossible to conveying operating mode is met using the "O"-ring of conventional quality of rubber materials and is situated between
The requirement of matter, the requirement of conveying operating mode medium is met according to the "O"-ring of special quality of rubber materials, and its production cost is again suitable
Costliness, and the "O"-ring of wrongly installed unlike material is easy to when being transported to part or user's replacing, so as to influence magnetic force driving pump just
Often safe handling.
The content of the invention
It is an object of the present invention to provide between a kind of pump shaft and axle sleeve with magnetic force driving pump, prevent magnetic force driving pump defeated
Send the deflection for expanding with heat and contract with cold and producing caused by the temperature change of medium so that axle sleeve produces spalling and damages failure, causes pump
The elastic protective shaft sleeve for the special structure form being not normally functioning, solves above technical problem.
In order to realize above-mentioned technical purpose, above-mentioned technical requirements are reached, the technical solution adopted in the present invention is：It is a kind of
Elastic protective shaft sleeve, including the protective shaft sleeve body being connected between pump shaft and axle sleeve；Described protective shaft sleeve body includes pressing with axle sleeve
The center section of normal size tolerance fit；Described center section is provided at both ends with pump shaft by normal size tolerance fit
Edge；It is characterized in that：Several elastic telescopic grooves are provided with described center section；Described center section and pump shaft
Between form the first gap；The second gap is formed between described edge and axle sleeve.
It is used as preferred technical scheme：Described elastic telescopic groove includes the first telescopic chute group and the second telescopic chute group；Institute
It is to be arranged in parallel between the first telescopic chute group and the center line floor projection of the second telescopic chute group stated.
It is used as preferred technical scheme：Described the first telescopic chute group and the second telescopic chute group is mutually staggered, in being distributed on
Between on part-circular periphery direction.
It is used as preferred technical scheme：The first described telescopic chute group includes two kidney slots of structure identical first.
It is used as preferred technical scheme：The second described telescopic chute group includes second kidney slot and two the 3rd kidney-shapeds
Groove；The 3rd described kidney slot is symmetricly set on the second kidney slot both sides.
It is used as preferred technical scheme：Described elastic telescopic slot number amount is 3-5, is distributed on center section.
It is used as preferred technical scheme：Described elastic telescopic slot number amount is three, and center section is divided into three structures
Contiguous block in the middle of identical.
It is used as preferred technical scheme：The first described gap includes annular space；Described annular space two ends are set
There is cone space.
It is used as preferred technical scheme：The cross section on the inclined-plane on described cone space and the center line of protective shaft sleeve body
Between angle α be 7o-10o.
It is used as preferred technical scheme：The first described gap is more than the second gap.
The beneficial effects of the invention are as follows：A kind of elastic protective shaft sleeve, compared with traditional structure：It is provided with several elastic telescopics
Groove；Described elastic telescopic groove is distributed on the circumferencial direction of center section；It is additionally provided with the first gap and the second gap；Actually make
Used time, due to high temperature, the coefficient of thermal expansion of pump shaft and axle sleeve is inconsistent, causes the fit clearance between pump shaft and axle sleeve to increase, makes
Safe operation can not be stablized by obtaining magnetic force driving pump, and the setting of elastic telescopic groove causes center section flexible, then coordinates first
Gap and the second gap, collective effect, it is ensured that coordinate between pump shaft and axle sleeve close；During installation, by controlling pump shaft and axle
Gap between set so that protective shaft sleeve body is in the state of compression in normal temperature, when high-temperature heat expansion, pump shaft and axle sleeve it
Between fit clearance increase, now protective shaft sleeve body resilience, fill up gap increase after space, it is ensured that between pump shaft and axle sleeve
All the time coordinate close so that magnetic force driving pump is safely and steadily run.
Brief description of the drawings
Structural representation when Fig. 1 uses for the present invention；
Fig. 2 is Figure 1A of the present invention to partial enlarged view；
Fig. 3 is protective shaft sleeve body first embodiment structural representation of the present invention；
Fig. 4 is elastic telescopic groove first embodiment local expansion view of the present invention；
Fig. 5 is protective shaft sleeve body second embodiment structural representation of the present invention；
In figure：1. pump shaft, 2. axle sleeves, 3. protective shaft sleeve bodies, 4. center sections, 5. edges, 6/61. elastic telescopic groove,
7. the first gap, 8. second gaps, 601. first telescopic chute groups, 602. second telescopic chute groups, 603. first kidney slots, 604.
Two kidney slots, 605. the 3rd kidney slots, 401. middle contiguous blocks, 701. annular spaces, 702. cone spaces, 703. inclined-planes,
301. center line.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings；
In the accompanying drawings：A kind of elastic protective shaft sleeve, including the protective shaft sleeve body 3 being connected between pump shaft 1 and axle sleeve 2；Described shield
Sleeve body 3 includes pressing the center section 4 of normal size tolerance fit with axle sleeve 2；Described center section 4 be provided at both ends with
Pump shaft 1 presses the edge 5 of normal size tolerance fit；Be provided with described center section 4 several elastic telescopic grooves 6,
61；The first gap 7 is formed between described center section 4 and pump shaft 1；Second is formed between described edge 5 and axle sleeve 2
Gap 8；When actual use, first according to the size of protective shaft sleeve body 3, the distance between pump shaft 1 and axle sleeve 2 are determined, further
Protective shaft sleeve body 3 is installed on pump shaft 1, further axle sleeve 2 is installed on protective shaft sleeve body 3 by the method for hot charging, this
When protective shaft sleeve body 3 on should be at compressive state；When magnetic force driving pump conveys high-temperature medium, the thermal expansion of pump shaft 1 and axle sleeve 2
Rate is inconsistent, causes the fit clearance between pump shaft 1 and axle sleeve 2 to increase, now protective shaft sleeve body 3 is in center section 4, Yi Ji
Under the collective effect in one gap 7 and the second gap 8, resilience has filled up between the pump shaft 1 and axle sleeve 2 that thermal expansion causes what is increased
Fit clearance；So that protective shaft sleeve body 3 is not only able to adapt to normal temperature operating mode to use, and it can adapt to worst hot case and use, protect
Having demonstrate,proved magnetic force driving pump can safely and steadily run,
In Fig. 4, first embodiment：Described elastic telescopic groove 6 includes the first telescopic chute group 601 and the second telescopic chute group 602；
It is to be arranged in parallel between the first described telescopic chute group 601 and the center line floor projection of the second telescopic chute group 602；Described
One telescopic chute group 601 and the second telescopic chute group 602 are mutually staggered, and are distributed on the circumferencial direction of center section 4；Described first stretches
Contracting groove group 601 includes two the first kidney slots of structure identical 603；The second described telescopic chute group 602 includes second waist
Shape groove 604 and two the 3rd kidney slots 605；The 3rd described kidney slot 605 is symmetricly set on the both sides of the second kidney slot 604；It is real
Border is distributed on the circumference side of center section 4 in use, be provided with the first telescopic chute group 601 and the second telescopic chute group 602 is mutually staggered
Upwards, including multiple kidney slots, similar network structure is formed, not only structural strength is high, and with certain flexible resilient energy
Power.
In Figure 5, second embodiment：The described quantity of elastic telescopic groove 61 is 3-5, is distributed on center section 4；Most
Good scheme is that the described quantity of elastic telescopic groove 61 is three, and center section 4 is divided into contiguous block in the middle of three structure identicals
401；Described middle contiguous block 401, not only ensure that the bonding strength between edge 5, and stretch with certain
Contracting resilience.
In Fig. 2, Fig. 3：The first described gap 7 includes annular space 701；The described two ends of annular space 701 are set
There is cone space 702；The cross section on the inclined-plane 703 on described cone space 702 and the center line 301 of protective shaft sleeve body 3 it
Between angle α be 7o-10o；The setting on the inclined-plane 703 on described cone space 702, facilitates stretching back for center section 4
Resilience energy power, improves the elasticity and tensile toughness of protective shaft sleeve body 3, extends the service life of protective shaft sleeve body 3.
In Fig. 2, Fig. 3：The first described gap 7 is more than the second gap 8；Prevent center section 4, excessive condensation, no
But easily cause and be broken at inclined-plane 703, and cause center section 4 to lose the ability of resilience, so as to not have, compensation heat is swollen
The effect of the swollen pump shaft 1 caused and the fit clearance increased between axle sleeve 2.
The specific implementation of the present invention：Protective shaft sleeve body 3 should select high temperature resistant, corrosion-resistant and with certain toughness and elasticity
Material, such as 316L.
Above-described embodiment is only intended to clearly illustrate the description made of the present invention, and the not restriction to embodiment,
To those of ordinary skill in the art, other various forms of changes or change can also be made on the basis of the above description
Dynamic, there is no necessity and possibility to exhaust all the enbodiments, and the obvious change or change thus amplified out
Among moving still in protection scope of the present invention.
Claims (10)
1. a kind of elastic protective shaft sleeve, including it is connected to pump shaft（1）And axle sleeve（2）Between protective shaft sleeve body（3）；Described shield axle
Cover body（3）Including with axle sleeve（2）By the center section of normal size tolerance fit（4）；Described center section（4）Two ends are set
It is equipped with and pump shaft（1）By the edge of normal size tolerance fit（5）；It is characterized in that：Described center section（4）It is upper to set
There are several elastic telescopic grooves（6、61）；Described center section（4）With pump shaft（1）Between form the first gap（7）；Described
Edge（5）With axle sleeve（2）Between form the second gap（8）.
2. a kind of elastic protective shaft sleeve according to claim 1, it is characterized in that：Described elastic telescopic groove（6）Including first
Telescopic chute group（601）With the second telescopic chute group（602）；The first described telescopic chute group（601）With the second telescopic chute group（602）'s
It is to be arranged in parallel between center line floor projection.
3. a kind of elastic protective shaft sleeve according to claim 2, it is characterized in that：The first described telescopic chute group（601）With
Two telescopic chute groups（602）Mutually it is staggered, is distributed on center section（4）On circumferencial direction.
4. a kind of elastic protective shaft sleeve according to claim 3, it is characterized in that：The first described telescopic chute group（601）Including
Two kidney slots of structure identical first（603）.
5. a kind of elastic protective shaft sleeve according to claim 3, it is characterized in that：The second described telescopic chute group（602）Including
One the second kidney slot（604）With two the 3rd kidney slots（605）；The 3rd described kidney slot（605）It is symmetricly set on second
Kidney slot（604）Both sides.
6. a kind of elastic protective shaft sleeve according to claim 1, it is characterized in that：Described elastic telescopic groove（61）Quantity is 3-
5, it is distributed on center section（4）On.
7. a kind of elastic protective shaft sleeve according to claim 6, it is characterized in that：Described elastic telescopic groove（61）Quantity is three
It is individual, by center section（4）It is divided into contiguous block in the middle of three structure identicals（401）.
8. a kind of elastic protective shaft sleeve according to claim 1, it is characterized in that：The first described gap（7）Including annular empty
Between（701）；Described annular space（701）It is provided at both ends with cone space（702）.
9. a kind of elastic protective shaft sleeve according to claim 8, it is characterized in that：Described cone space（702）On inclined-plane
（703）Cross section and protective shaft sleeve body（3）Center line（301）Between angle α be 7o-10o.
10. a kind of elastic protective shaft sleeve according to claim 1, it is characterized in that：The first described gap（7）Between second
Gap（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509886.6A CN107143516A (en) | 2017-06-28 | 2017-06-28 | A kind of elastic protective shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509886.6A CN107143516A (en) | 2017-06-28 | 2017-06-28 | A kind of elastic protective shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107143516A true CN107143516A (en) | 2017-09-08 |
Family
ID=59785376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509886.6A Pending CN107143516A (en) | 2017-06-28 | 2017-06-28 | A kind of elastic protective shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143516A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575361Y (en) * | 2002-10-26 | 2003-09-24 | 大连海密梯克密封泵有限公司 | Energy-saving skating device for motorcycle |
| CN2703904Y (en) * | 2004-06-22 | 2005-06-08 | 杭州大路实业有限公司 | Magnetic driving pump axis structural assembly |
| CN101203696A (en) * | 2005-06-09 | 2008-06-18 | 孔斯贝格汽车公司 | Tuneable bushing |
| CN201196157Y (en) * | 2008-04-17 | 2009-02-18 | 黄佳华 | Shaft protection sleeve |
| CN101560989A (en) * | 2008-04-17 | 2009-10-21 | 黄佳华 | Protective shaft sleeve |
| CN206943069U (en) * | 2017-06-28 | 2018-01-30 | 江苏海天科技有限公司 | Elastic protective shaft sleeve |
-
2017
- 2017-06-28 CN CN201710509886.6A patent/CN107143516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575361Y (en) * | 2002-10-26 | 2003-09-24 | 大连海密梯克密封泵有限公司 | Energy-saving skating device for motorcycle |
| CN2703904Y (en) * | 2004-06-22 | 2005-06-08 | 杭州大路实业有限公司 | Magnetic driving pump axis structural assembly |
| CN101203696A (en) * | 2005-06-09 | 2008-06-18 | 孔斯贝格汽车公司 | Tuneable bushing |
| CN201196157Y (en) * | 2008-04-17 | 2009-02-18 | 黄佳华 | Shaft protection sleeve |
| CN101560989A (en) * | 2008-04-17 | 2009-10-21 | 黄佳华 | Protective shaft sleeve |
| CN206943069U (en) * | 2017-06-28 | 2018-01-30 | 江苏海天科技有限公司 | Elastic protective shaft sleeve |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170908 |
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| WD01 | Invention patent application deemed withdrawn after publication |