CN107084149A - A kind of thrust bearing for magnetic pumps structure and magnetic drive pump - Google Patents
A kind of thrust bearing for magnetic pumps structure and magnetic drive pump Download PDFInfo
- Publication number
- CN107084149A CN107084149A CN201710473809.XA CN201710473809A CN107084149A CN 107084149 A CN107084149 A CN 107084149A CN 201710473809 A CN201710473809 A CN 201710473809A CN 107084149 A CN107084149 A CN 107084149A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- bearing portion
- axle
- bearing
- thrust bearing
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000010935 stainless steel Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000735558 Senna coronilloides Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 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
- F04D29/046—Bearings
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/226—Carbides
- F05D2300/2261—Carbides of silicon
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention provides a kind of thrust bearing for magnetic pumps structure, it includes pedestal, pedestal has bottom plate, bottom plate is circular bottom plate, the edge of bottom plate is provided with annular projection portion, annular projection portion is along the axially extending of bottom plate, the center of bottom plate is equipped with pump shaft, axle sleeve is set with pump shaft, annular installing space is formed between the outer wall of axle sleeve and the inwall in annular projection portion, first axle bearing portion is provided with annular installing space, first axle bearing portion is ring bodies, first axle bearing portion is SiC bearing, there is an at least protuberance on the inwall in annular projection portion, radial direction of the protuberance along annular projection portion extends into annular installing space, protuberance props up first axle bearing portion.Present invention also offers a kind of magnetic drive pump.The present invention has high-wearing feature compared to prior art, and high impact properties, service life length and the strong advantage of stability overcome the weak point in conventional structure use.
Description
Technical field
The present invention relates to magnetic force pump technical field, and in particular to a kind of thrust bearing for magnetic pumps structure and magnetic drive pump.
Background technology
Thrust bearing, in mechanical field extensive use, is the special bearing for specially bearing axial force.Thrust bearing point
For thrust rolling bearing and plain thrust bearing.Wherein, plain thrust bearing be divided into again tile type sliding bearing and it is flat only
Sliding dynamic bearing.Tile type sliding bearing uses thin oil lubricant.Flat thrust bearing uses medium self-lubricating, flat thrust
Bearing is using widely in magnetic force pumping system, and it has installation operation convenient, long lifespan, advantages of simple structure and simple.
Due to being limited by the intrinsic axially position feature of magnetic drive pump in magnetic force pumping system, so in magnetic force pumping system all
Axial restraint is carried out using flat thrust bearing and axial force is born.But, because the operation stability of magnetic force pumping system will
Ask very high, thus require magnetic drive pump thrust bearing will have high-wearing feature, high impact properties, high self lubricity, long lifespan,
The advantages of stability is high.In conventional application process, have made using overall stainless steel, Integral alloy or carborundum make or
The thrust bearing that person's entirety Stainless steel application special alloy makes.But, in these thrust bearings, no matter which kind of all has necessarily
Deficiency, do not reach preferable use requirement, it is specific as follows.
When being made using overall stainless steel, because stainless steel material hardness is low, the thrust shaft for causing overall stainless steel to make
Short life is held, the material mutually rubbed with it can only select the material than stainless steel soft, more cause it to narrow using scope, can only
Using in relatively simple field working conditions.
When being made using Integral alloy, as a result of alloy material, its hardness is greatly improved, and its service life is carried significantly
Height, but cause its cost very high because it uses Integral alloy and made, also limit it a wide range of on magnetic force pumping system
Use.
When being made using overall Stainless steel application special alloy, base material is stainless steel material, and abrasive end face is special using spraying
Kind of alloy, although with the characteristics of hardness is high, cost is low, but because its spray layer thickness is usually no more than 1mm, it is wear-resistant,
And spray layer thickness not impact resistance, thus cause its service life short.
The content of the invention
In consideration of it, the invention provides a kind of thrust bearing for magnetic pumps structure and magnetic drive pump, with high-wearing feature, high-impact
Hitting property, service life length and the strong advantage of stability, overcome the weak point in conventional structure use.
On the one hand, the invention provides a kind of thrust bearing for magnetic pumps structure, it includes pedestal, and pedestal has bottom plate, bottom
Plate is circular bottom plate, and the edge of bottom plate is provided with annular projection portion, and annular projection portion is along the axially extending of bottom plate, in bottom plate
The heart, which is equipped with pump shaft, pump shaft, is set with axle sleeve, and annular is formed between the outer wall of axle sleeve and the inwall in annular projection portion and installs empty
Between, first axle bearing portion is provided with annular installing space, first axle bearing portion is ring bodies, and first axle bearing portion is SiC bearing,
There is an at least protuberance, radial direction of the protuberance along annular projection portion is into annular installing space on the inwall in annular projection portion
Extension, protuberance props up first axle bearing portion.
Further, above-mentioned pedestal is metal pedestal.
Further, second bearing portion is provided with above-mentioned first axle bearing portion, second bearing portion is ring bodies, second bearing
Portion is bush(ing) bearing, and second bearing portion is extended axially outward along first axle bearing portion.
Further, the notch part of correspondence protuberance is provided with the outer wall of above-mentioned first axle bearing portion.
Further, above-mentioned protuberance is arcuate projections.
Further, there is annular gap between above-mentioned first axle bearing portion and axle sleeve.
Further, multiple grooves are offered on above-mentioned bottom plate, multiple grooves are distributed in a ring, multiple grooves are located at first
The lower section of bearing portion.
Further, the bottom of above-mentioned groove is connected with through hole, through hole insertion bottom plate.
Further, above-mentioned groove is circular groove, and through hole is circular hole.
On the other hand, the invention provides a kind of magnetic drive pump, it includes pump main body, and pump main body is provided with a kind of above-mentioned magnetic
Power pump thrust bearing structure.
A kind of thrust bearing for magnetic pumps structure provided by the present invention and magnetic drive pump, as a result of pedestal, pump shaft and work
The structure being made up of the first axle bearing portion of SiC bearing (thrust bearing), therefore, it mainly has compared to prior art
Advantages below：
1) simple in construction, installation operation is convenient, reduces cost using pedestal and first axle bearing portion combination, improves
The use scope of magnetic drive pump；
2) as the first axle bearing portion of SiC bearing, with very high hardness, (9.5 grades of Mohs' hardness is only second to most hard
Diamond), and corrosion resistance is splendid, is resistant to the corrosion of All Media, service life, impact resistance, wearability all than with
It is greatly improved toward structure, this also further increasing the use scope of magnetic drive pump.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is a kind of structural representation of the thrust bearing for magnetic pumps structure provided in an embodiment of the present invention under depression angle
Figure；
Fig. 2 be Fig. 1 in A-A to sectional view.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Thrust bearing for magnetic pumps constructive embodiment：
Embodiment one：
Referring to Fig. 1 to Fig. 2, a kind of thrust bearing for magnetic pumps structure that the embodiment of the present invention one is provided is shown in figure, its
Including pedestal 1, pedestal 1 has bottom plate 11, and bottom plate 11 is circular bottom plate, and the edge of bottom plate 11 is provided with annular projection portion 12, ring
Shape lug boss 12 is axially extending along bottom plate 11, and the center of bottom plate 11, which is equipped with pump shaft 2, pump shaft 2, is set with axle sleeve 21, axle
Formed between the outer wall of set 21 and the inwall in annular projection portion 12 in annular installing space 3, annular installing space 3 and be provided with first
Bearing portion 4, first axle bearing portion 4 is ring bodies, and first axle bearing portion 4 is to have on SiC bearing, the inwall in annular projection portion 12
One protuberance 121, radial direction of the protuberance 121 along annular projection portion 12 extends into annular installing space 3, and protuberance 121 is supported
Firmly first axle bearing portion 4.
Wherein, further, pedestal 1 is specifically as follows metal pedestal, to improve the intensity of pedestal.Meanwhile, protuberance 121
It can also be arranged as required to be multiple, it can be distributed on the inwall in annular projection portion along the circumference in annular projection portion.
A kind of thrust bearing for magnetic pumps structure that the present embodiment is provided, is carbonized as a result of pedestal, pump shaft and conduct
The structure that the first axle bearing portion of silicon bearing is constituted, therefore, it mainly has advantages below compared to prior art：
1) simple in construction, installation operation is convenient, reduces cost using pedestal and first axle bearing portion combination, improves
The use scope of magnetic drive pump；
2) as the first axle bearing portion of SiC bearing, with very high hardness, (9.5 grades of Mohs' hardness is only second to most hard
Diamond), and corrosion resistance is splendid, is resistant to the corrosion of All Media, service life, impact resistance, wearability all than with
It is greatly improved toward structure, this also further increasing the use scope of magnetic drive pump.
Embodiment two：
Referring to Fig. 1 to Fig. 2, a kind of thrust bearing for magnetic pumps structure that the embodiment of the present invention two is provided is shown in figure, this
Embodiment is also further made that following as improved technical scheme on the basis of above-described embodiment：First axle bearing portion 4
On be provided with second bearing portion 5, second bearing portion 5 is ring bodies, and second bearing portion 5 is bush(ing) bearing, second bearing portion 5
Along extending axially outward for first axle bearing portion 4.First axle bearing portion (i.e. thrust bearing) is arranged on pump shaft, is provided with pump shaft
Axle sleeve simultaneously forms friction pair with pedestal axial compression, first axle bearing portion and second bearing portion (i.e. bush(ing) bearing), to realize
The fixation and carrying of shafting.
Embodiment three：
Referring to Fig. 1 to Fig. 2, a kind of thrust bearing for magnetic pumps structure that the embodiment of the present invention three is provided is shown in figure, this
Embodiment is also further made that following as improved technical scheme on the basis of above-described embodiment：First axle bearing portion 4
Outer wall on be provided with the notch part 41 of correspondence protuberance 121, to realize and the clamping location fit of protuberance.
Wherein, further, with continued reference to Fig. 1 to Fig. 2, protuberance 121 is specifically as follows arcuate projections, recessed to be formed
Trough roller presses detent mechanism, so as to first axle bearing portion is fixedly secured present internal.
Example IV：
Referring to Fig. 1 to Fig. 2, a kind of thrust bearing for magnetic pumps structure that the embodiment of the present invention four is provided is shown in figure, this
Embodiment is also further made that following as improved technical scheme on the basis of above-described embodiment：First axle bearing portion 4
There is annular gap 42 between axle sleeve 21.First axle bearing portion is arranged on pump shaft with merging by gap especially by parts such as keys
On, utilize the effect of annular gap so that when pump shaft rotates, vortical flow is formed between first axle bearing portion and pump shaft, so that
The rotation of pump shaft can constantly be accelerated so that the delivery efficiency of pump can be higher.
Embodiment five：
Referring to Fig. 1 to Fig. 2, a kind of thrust bearing for magnetic pumps structure that the embodiment of the present invention five is provided is shown in figure, this
Embodiment is also further made that following as improved technical scheme on the basis of above-described embodiment：Opened up on bottom plate 11
There are six grooves 111, six grooves 111 are distributed in a ring, six grooves 111 are located at the lower section of first axle bearing portion 4.Utilize groove
Effect, sufficient medium can be provided the rubbing surface of first axle bearing portion is lubricated and cooled down, improve first axle bearing portion
Service life, solve conventional structure due to cooling deficiency cause first axle bearing portion damage failure problems.Wherein, groove
111 quantity can as needed depending on, shown in the present embodiment with six, other embodiment can also be two, three
Etc..In addition, with reference to the effect of " annular gap " in above-described embodiment four, further moistening to the rubbing surface of first axle bearing portion
Sliding and cooling, improves the service life of first axle bearing portion.
Wherein, further, with continued reference to Fig. 1 to Fig. 2, the bottom of groove 111 is connected with through hole 112, the insertion of through hole 112
Bottom plate 11；Meanwhile, groove 111 is specifically as follows circular groove, and through hole 112 is circular hole., can also be simultaneously sharp by the setting of the structure
With the effect of groove and through hole, sufficient medium is further provided the rubbing surface of first axle bearing portion is lubricated and cooled down,
So as to further increasing the service life of first axle bearing portion, conventional structure is further solved because cooling deficiency causes
The failure problems that first axle bearing portion is damaged.
Magnetic drive pump embodiment：
A kind of magnetic drive pump (not shown) provided in an embodiment of the present invention, including pump main body, pump main body is provided with appoints as described above
A kind of thrust bearing for magnetic pumps structure described in one embodiment.As a result of a kind of magnetic drive pump described in any of the above-described embodiment
Thrust bearing structure, thus the magnetic drive pump of the present embodiment equally mainly has advantages below compared to prior art：
1) simple in construction, installation operation is convenient, reduces cost using pedestal and first axle bearing portion combination, improves
The use scope of magnetic drive pump；
2) as the first axle bearing portion of SiC bearing, with very high hardness, (9.5 grades of Mohs' hardness is only second to most hard
Diamond), and corrosion resistance is splendid, is resistant to the corrosion of All Media, service life, impact resistance, wearability all than with
It is greatly improved toward structure, this also further increasing the use scope of magnetic drive pump.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of thrust bearing for magnetic pumps structure, it is characterised in that including pedestal (1), the pedestal (1) has bottom plate (11),
The bottom plate (11) is circular bottom plate, and the edge of the bottom plate (11) is provided with annular projection portion (12), the annular projection portion
(12) along the axially extending of the bottom plate (11), the center of the bottom plate (11) is equipped with pump shaft (2), the pump shaft (2)
Axle sleeve (21) is set with, annular is formed between the outer wall of the axle sleeve (21) and the inwall in the annular projection portion (12) and installs empty
Between (3), first axle bearing portion (4) is provided with the annular installing space (3), the first axle bearing portion (4) is ring bodies, described
First axle bearing portion (4) is to have an at least protuberance (121), institute on SiC bearing, the inwall of the annular projection portion (12)
State radial direction of the protuberance (121) along the annular projection portion (12) into the annular installing space (3) to extend, the protrusion
Portion (121) props up the first axle bearing portion (4).
2. a kind of thrust bearing for magnetic pumps structure according to claim 1, it is characterised in that the pedestal (1) is metal
Pedestal.
3. a kind of thrust bearing for magnetic pumps structure according to claim 1, it is characterised in that the first axle bearing portion (4)
On be provided with second bearing portion (5), the second bearing portion (5) is ring bodies, and the second bearing portion (5) is radially slides axle
Hold, second bearing portion (5) the extending axially outward along first axle bearing portion (4).
4. a kind of thrust bearing for magnetic pumps structure according to claim 1, it is characterised in that the first axle bearing portion (4)
Outer wall on be provided with the notch part (41) of the correspondence protuberance (121).
5. a kind of thrust bearing for magnetic pumps structure according to claim 1 or 4, it is characterised in that the protuberance (121)
For arcuate projections.
6. a kind of thrust bearing for magnetic pumps structure according to claim 1, it is characterised in that the first axle bearing portion (4)
There is annular gap (42) between the axle sleeve (21).
7. a kind of thrust bearing for magnetic pumps structure according to claim 1, it is characterised in that opened up on the bottom plate (11)
There are multiple grooves (111), the multiple groove (111) is distributed in a ring, the multiple groove (111) is located at the clutch shaft bearing
The lower section in portion (4).
8. a kind of thrust bearing for magnetic pumps structure according to claim 7, it is characterised in that the bottom of the groove (111)
Portion is connected with through hole (112), bottom plate (11) described in through hole (112) insertion.
9. a kind of thrust bearing for magnetic pumps structure according to claim 8, it is characterised in that the groove (111) is circle
Groove, the through hole (112) is circular hole.
10. a kind of magnetic drive pump, it is characterised in that including pump main body, the pump main body is installed any just like claim 1-9 described
A kind of thrust bearing for magnetic pumps structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710473809.XA CN107084149A (en) | 2017-06-21 | 2017-06-21 | A kind of thrust bearing for magnetic pumps structure and magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710473809.XA CN107084149A (en) | 2017-06-21 | 2017-06-21 | A kind of thrust bearing for magnetic pumps structure and magnetic drive pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107084149A true CN107084149A (en) | 2017-08-22 |
Family
ID=59606522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710473809.XA Pending CN107084149A (en) | 2017-06-21 | 2017-06-21 | A kind of thrust bearing for magnetic pumps structure and magnetic drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541839A (en) * | 2019-09-02 | 2019-12-06 | 丹东通博泵业有限公司 | Embedded thrust bearing assembly for magnetic pump and magnetic pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421445A (en) * | 1965-06-24 | 1969-01-14 | Hayward Tyler & Co Ltd | Glandless electrically driven pumps |
| CN101392763A (en) * | 2008-10-29 | 2009-03-25 | 顾建军 | High-temperature and high-pressure magnetic pump |
| CN103573682A (en) * | 2012-07-31 | 2014-02-12 | 上海佰诺泵阀有限公司 | Magnetic drive pump with bearing block |
| CN204213032U (en) * | 2014-10-22 | 2015-03-18 | 安徽南方化工泵业有限公司 | The general thrust bearing mechanism of magnetic drive pump high/low temperature |
| CN206972599U (en) * | 2017-06-21 | 2018-02-06 | 江苏建安泵业制造有限公司 | A kind of thrust bearing for magnetic pumps structure and magnetic drive pump |
-
2017
- 2017-06-21 CN CN201710473809.XA patent/CN107084149A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421445A (en) * | 1965-06-24 | 1969-01-14 | Hayward Tyler & Co Ltd | Glandless electrically driven pumps |
| CN101392763A (en) * | 2008-10-29 | 2009-03-25 | 顾建军 | High-temperature and high-pressure magnetic pump |
| CN103573682A (en) * | 2012-07-31 | 2014-02-12 | 上海佰诺泵阀有限公司 | Magnetic drive pump with bearing block |
| CN204213032U (en) * | 2014-10-22 | 2015-03-18 | 安徽南方化工泵业有限公司 | The general thrust bearing mechanism of magnetic drive pump high/low temperature |
| CN206972599U (en) * | 2017-06-21 | 2018-02-06 | 江苏建安泵业制造有限公司 | A kind of thrust bearing for magnetic pumps structure and magnetic drive pump |
Non-Patent Citations (1)
| Title |
|---|
| 关醒凡编: "《化工机器与设备检修技术》", 北京航空航天出版社, pages: 735 - 741 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541839A (en) * | 2019-09-02 | 2019-12-06 | 丹东通博泵业有限公司 | Embedded thrust bearing assembly for magnetic pump and magnetic pump |
| CN110541839B (en) * | 2019-09-02 | 2024-04-09 | 丹东通博泵业有限公司 | Embedded thrust bearing assembly for magnetic drive pump and magnetic drive pump |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170822 |
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| RJ01 | Rejection of invention patent application after publication |