CN106670954A - Combined type rotary polishing device for centrifugal pump impeller - Google Patents
Combined type rotary polishing device for centrifugal pump impeller Download PDFInfo
- Publication number
- CN106670954A CN106670954A CN201611256885.7A CN201611256885A CN106670954A CN 106670954 A CN106670954 A CN 106670954A CN 201611256885 A CN201611256885 A CN 201611256885A CN 106670954 A CN106670954 A CN 106670954A
- Authority
- CN
- China
- Prior art keywords
- impeller
- cylinder
- centrifugal pump
- combined type
- type rotary
- 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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Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
- B24B31/0224—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the workpieces being fitted on a support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Provided is a combined type rotary polishing device for a centrifugal pump impeller. A bottom drive device is mounted on a base. An output shaft of the bottom drive device is connected with a transmission shaft. A cylinder body is located on a workbench. The impeller is mounted in the cylinder body. The transmission shaft penetrates the workbench and extends into the cylinder. The upper end of the transmission shaft is connected with the impeller. An opening in the upper portion of the impeller communicates with an outlet in the lower portion of a current regulator. The impeller is located on the lower side of an inner cavity of the cylinder body. A water storage tank is arranged on the upper side of the inner cavity of the cylinder body. Water inlet holes are formed around the water storage tank. A water outlet in the lower portion of the water storage tank is connected with a pore plate. The pore plate is connected an inlet in the upper portion of the current regulator. A water injection hole is formed in the upper end of the cylinder body. A water outlet hole is formed in the lower end of the cylinder body. The upper end of the cylinder body is in linkage with an output shaft of a top drive device. A frame is mounted on the workbench. The top drive device is mounted on the frame. The combined type rotary polishing device for the centrifugal pump impeller is simplified in structure, small in size, high in polishing efficiency and low in cost.
Description
Technical field
The present invention relates to centrifugal pump impeller rotary polishing apparatus, especially a kind of centrifugal pump impeller combined type rotation polishing dress
Put.
Background technology
At present, most domestic centrifugal pump impeller still adopts traditional sand casting process, and impeller surface is typically more thick
It is rough.And impeller, used as the core component of centrifugal pump, its roughness has large effect to the performance of unit.Reduce impeller surface
Roughness improves unit efficiency and has significant role to reducing the hydraulic loss in impeller.To improve the matter on flow passage components surface
Amount grade, needs to be polished impeller.When carrying out sanding and polishing to impeller using traditional-handwork technique, as blade is three-dimensional
The curved surface of distortion, dynamics and direction it is wayward, to Benchwork require it is higher, polishing efficiency is relatively low.It is particularly right
In the narrower double shrouded wheel of runner, hand polish difficulty is very big.
Abrasive Flow Machining is that friction adds repeatedly under a certain pressure using the viscoelastic matrix medium (abrasive media) for carrying
Work surface and reach the special process of polishing action.In abrasive Flow Machining, the chemical property of abrasive material is inactive and non-corrosiveness,
Part material is removed by grinding method, and the cutting force of surface of the work is low, and after grinding, surface will not be left substantially
Stress.Abrasive Flow removal material is very clean, and surface of the work place defective will not leave behind other impurity to fill and lead up, no
The workpiece of same material can be processed using same abrasive material, the material removed from a workpiece, will not be sticked or be embedded in
On other surfaces.But, existing centrifugal pump impeller burnishing device needs abrasive particle mixing plant, and pipeline connection is also more, dress
Put complex structure, volume larger, relatively costly.
The content of the invention
In order to overcome that complex structure, the volume of existing centrifugal pump impeller burnishing device are larger, polishing efficiency is relatively low, cost compared with
High deficiency, the present invention provide that a kind of structure simplifications, small volume, polishing efficiency be higher, lower-cost centrifugal pump impeller is answered
Box-like rotary polishing apparatus.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of centrifugal pump impeller combined type rotary polishing apparatus, including base, framework, cylinder, impeller, flow straightener, water storage
Groove, orifice plate, bottom drive unit and top-drive device, install the bottom drive unit on the base, the bottom is driven
The output shaft of dynamic device is connected with the bottom driving axle, and the cylinder is located on workbench, and impeller, institute are installed in the cylinder
Power transmission shaft is stated through workbench and is stretched in cylinder；The upper inlet of the impeller is connected with the lower part outlet of flow straightener；It is described
Impeller is located at the downside of cylinder lumen；The upside of the cylinder lumen arranges aqua storage tank, and a circle of the aqua storage tank is provided with into water
Hole, the lower section outlet of the aqua storage tank are connected with orifice plate, and the orifice plate is connected with the upper entrance of the flow straightener, the cylinder
The upper end of body is provided with water injection hole, and the lower end of the cylinder is provided with apopore, the upper end of the cylinder and the top-drive device
Output shaft linkage, installation frame on the workbench installs the top-drive device on the framework.
Further, the power transmission shaft includes bottom driving axle and top power transmission shaft, between the bottom driving axle and cylinder
Sealed by filler, upper end and the impeller of the bottom driving axle are connected by impeller sleeve and impeller nut；The impeller
The effect of axle sleeve is that, by changing respective impeller axle sleeve, the impeller and bottom driving axle in order to different pore size size connects, described
Impeller sleeve is threaded connection with bottom driving axle, thread rotary orientation show with the impeller direction of rotation one avoid loosen, institute
State.
Further, the impeller port ring gap be 3~5mm, to avoid choma gap too small, granule to impeller port ring at
, there is abrasion in excessive polishing；The choma is connected in flow straightener exit by screw, is engaged with impeller, the choma
Internal diameter size is for multiple, and the choma of corresponding size can be changed according to different impeller sizes, with ensure impeller port ring gap as 3~
5mm；The baffle plate is connected in flow straightener outlet outside by screw, and angled downward-sloping, to avoid abrasive particle from stopping
On the upside of baffle plate, flow channels between baffle plate and front shroud of impeller, are formed.
Further, the upper inlet empty set of the impeller is in the be connected choma of flow straightener lower part outlet.
The output shaft of the bottom drive unit is connected with the bottom driving axle by shaft coupling, the top drive dress
The output shaft put is connected with the top power transmission shaft by shaft coupling.
Further, the bottom drive unit and top-drive device are frequency conversion motor.
The top-drive device is arranged on electric machine support, and the electric machine support is installed on said frame.
The cylinder is arranged on cylinder base, and the cylinder floor installation is on the table.
The present invention technology design be：A total of two motors of whole device, two power transmission shafts, motor by shaft coupling with
Power transmission shaft connects.The lower sections of motor of described device is rotated by bottom driving axle impeller, and impeller passes through impeller sleeve
It is connected with bottom driving axle with impeller nut, the fluid that the centrifugal force produced when wheel rotation can be ordered about in impeller goes out from impeller
Mouth flows out, while producing a low-pressure area in impeller inlet, water inspiration is gone.Fluid used by device is a kind of abrasive Flow, that is, flow
Some abrasive medias are carried in body, when wheel rotation, the fluid about and within impeller can carry out polishing to impeller surface,
Polish, remove burr.To avoid choma gap from crossing little particle to excessive polishing at impeller port ring, impeller port ring gap is 3~
5mm；The fluid flow through by choma gap, its abrasive particle understand cover plate before the impeller and leading to that baffle plate is formed due to the turning effort of impeller
Reciprocal collision reaction in road, until flowing out the passage, thus strengthens polishing action of the abrasive particle to front shroud.When fluid flows out
Impeller, the fluid with certain kinetic energy can be along runners upwards, into aqua storage tank, and aqua storage tank is fixed on above cylinder, aqua storage tank
A flow straightener is installed below, the fluid in aqua storage tank flows downwardly into flow straightener, finally flows into impeller inlet, has realized that one is followed
Ring.Motor above device is fixedly mounted on support, and motor is connected with power transmission shaft by shaft coupling, and power transmission shaft is logical with cylinder again
Bolt connection is crossed, the top power transmission shaft being connected with cylinder and the bottom driving axle that is connected with impeller are in the vertical centrage of same
On.After impeller work a period of time, the abrasive particle in fluid is evenly distributed substantially, causes the wear particle concentration around impeller
Reduce, the efficiency and effect of polishing can be reduced.In order to solve such case, at this time need impeller stops, be then turned on
Motor on the upside of device, drives barrel body rotation, improves the wear particle concentration around intermediate impeller by the spun down effect of cylinder.
Beneficial effects of the present invention are mainly manifested in：1st, the invention provides a kind of rotation polishing of centrifugal pump impeller combined type
Device, is capable of achieving self-loopa, saves sanding and polishing cost, reduce manpower and materials in device.2nd, the present invention devises one kind and can turn
Dynamic cylinder, can be such that abrasive particle is deposited to around impeller, make the polishing of impeller, polishing more efficient.3rd, apparatus of the present invention structure
Simply, compact, easy to operate, long service life, and polishing effect is good, reduces manufacturing cost and use cost.
Description of the drawings
Fig. 1 is centrifugal pump impeller combined type rotary polishing apparatus schematic diagram.
Fig. 2 is support schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
See figures.1.and.2, a kind of centrifugal pump impeller combined type rotary polishing apparatus, including base 1, framework 6, cylinder 7,
Impeller 21, impeller sleeve 23, bottom driving axle 25, top power transmission shaft 11, flow straightener 16, baffle plate 17, choma 18, aqua storage tank 14,
Orifice plate 15, bottom drive unit 2 and top-drive device 9, install the bottom drive unit 2, the bottom on the base 1
The output shaft of driving means 2 is connected with the bottom driving axle 25, and the cylinder 7 is located on workbench 5, peace in the cylinder 7
Dress impeller 21, the power transmission shaft 25 pass through workbench and stretch in cylinder 7, and upper end and the impeller 21 of the power transmission shaft 25 pass through leaf
Axle sleeve 23 and impeller nut 19 (20) are connected；The impeller sleeve 23 is threaded connection with power transmission shaft 25, thread rotary orientation with
21 direction of rotation one of impeller show avoid loosen, keyway is provided with the impeller sleeve 23 be connected impeller 21；The impeller 21
Upper inlet connect with the lower part outlet of flow straightener 16；The choma 18 is connected in 16 exit of flow straightener, with 21 phase of impeller
Coordinate, and the choma 18 of corresponding size can be changed according to 21 size of different impellers；21 choma gap of the impeller be 3~5mm, institute
Impeller 21 is stated positioned at the downside of cylinder lumen, the upside of the cylinder lumen arranges aqua storage tank 14, a circle of the aqua storage tank 14
Inlet opening 13 is provided with, the lower section outlet of the aqua storage tank 14 is connected with orifice plate 15, the orifice plate 15 and the flow straightener 16
Upper entrance connects, and the upper end of the cylinder 7 is provided with water injection hole 12, and the lower end of the cylinder 7 is provided with apopore 22, the cylinder
The output shaft of 7 upper end and the top-drive device 9 passes through shaft coupling 10 and top power transmission shaft 11 links, the workbench 5
Upper installation frame 6, installs the top-drive device 9 on the framework 6.
Further, the upper inlet empty set of the impeller 21 is in the be connected choma 18 of the lower part outlet of flow straightener 16.
Further, the output shaft of the bottom drive unit 2 is connected with the bottom driving axle 25 by shaft coupling 4；
The output shaft of the top-drive device 9 is connected with the top power transmission shaft 11 by shaft coupling 10.
Further, the bottom drive unit 2 and top-drive device 9 are frequency conversion motor.
The top-drive device 9 is arranged on electric machine support 8, and the electric machine support 8 is arranged on the framework 6.
The cylinder 7 is arranged on cylinder base 24, and the cylinder base 24 is arranged on workbench 5.
The centrifugal pump impeller combined type rotary polishing apparatus of the present embodiment include：Base 1, bottom drive unit 2, shaft coupling
3rd, bearing (ball) cover 4, workbench 5, framework 6, cylinder 7, electric machine support 8, top-drive device 9, shaft coupling 10, top power transmission shaft
11st, water injection hole 12, aqua storage tank inlet opening 13, aqua storage tank 14, orifice plate 15, flow straightener 16, baffle plate 17, choma 18, impeller nut 19
(20), impeller 21, apopore 22, impeller sleeve 23, cylinder base 24, bottom driving axle 25.After device is installed, by water outlet
Hole 22 is closed, and opens water injection hole 12, abrasive fluid is injected in cylinder 7, and bottom drive unit 2 is fixed by motor base 1
On the ground, then by shaft coupling 3, it is connected with bottom driving axle 25, bottom driving axle passes through impeller sleeve 23 and impeller nut
19 (20) are connected with impeller 21, and bottom drive unit 2 is rotated, and impeller 21 is rotated, as impeller 21 rotates the centrifugation for producing
Power makes the fluid outward movment in impeller, flows out from impeller outlet, and the liquid of outflow carries certain kinetic energy, may proceed in cylinder
Moved in 7 upwards, flow through aqua storage tank inlet opening 13, into aqua storage tank 14, aqua storage tank 14 is fixed on cylinder, under aqua storage tank 14
Side is mounted with that a flow straightener 16, fluid enter flow straightener 16 after flowing out aqua storage tank, is finally entering into impeller inlet, is realizing
One circulation, entirely circulates simple, compact.After operation a period of time, bottom drive unit 2 is stopped, open top part drives
Device 9, top-drive device 9 at the uniform velocity drive cylinder 7 to rotate, and the fluid in cylinder 7 can also be rotated so that the abrasive particle rotation in fluid
Turn sedimentation, the wear particle concentration of the fluid around impeller 21 increases, and now, closes top-drive device 9, makes cylinder 7 static, again
Bottom drive unit 2 is opened, impeller 21 is rotated again, is carried out polishing, polishes.Top is controlled by using power-supply controller of electric
The operating of driving means 9 and bottom drive unit 2, after the running a period of time of bottom drive unit 2, automatically cuts off bottom drive
2 power supply of dynamic device, open top part driving means 9, operating cut off 9 power supply of top-drive device after a period of time again, are followed with this
Ring, realizes automatically controlling.So blocked operation always, improves the polishing efficiency and effect of impeller.
Claims (8)
1. a kind of centrifugal pump impeller combined type rotary polishing apparatus, it is characterised in that：Including base, framework, cylinder, impeller, biography
Moving axis, flow straightener, aqua storage tank, orifice plate, bottom drive unit and top-drive device, install the bottom and drive on the base
Device, the output shaft of the bottom drive unit are connected with the power transmission shaft, and the cylinder is located on workbench, in the cylinder
Impeller is installed, the power transmission shaft passes through workbench and stretches in cylinder, and the upper end of the power transmission shaft is connected with impeller, the impeller
Open topped connect with the lower part outlet of flow straightener；The impeller be located at cylinder lumen downside, at the impeller port ring between
Gap is 3mm；The upside of the cylinder lumen arranges aqua storage tank, and a circle of the aqua storage tank is provided with inlet opening, the aqua storage tank
Lower section outlet is connected with orifice plate, and the orifice plate is connected with the upper entrance of the flow straightener, and the upper end of the cylinder is provided with note
Water hole, the lower end of the cylinder are provided with apopore, and the output shaft of the upper end of the cylinder and the top-drive device links, institute
Installation frame on workbench is stated, the top-drive device is installed on the framework.
2. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1, it is characterised in that：The power transmission shaft includes
Bottom driving axle and top power transmission shaft, are sealed by filler between the bottom driving axle and cylinder, the bottom driving axle
Upper end and impeller pass through impeller sleeve and impeller nut is connected；The impeller sleeve is threaded connection with bottom driving axle,
Thread rotary orientation is consistent with the impeller direction of rotation, is provided with keyway with the impeller that is connected on the impeller sleeve.
3. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：The impeller
Choma gap is 3~5mm, and the choma is connected in flow straightener exit by screw and is engaged with impeller, the choma it is interior
Footpath size is multiple；The baffle plate is connected in flow straightener outlet outside by screw, and angled downward-sloping, baffle plate with
Flow channels are formed between front shroud of impeller.
4. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：The impeller
Inner chamber of the open topped empty set in the lower part outlet of flow straightener.
5. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：Drive the bottom
The output shaft of dynamic device is connected with the power transmission shaft by shaft coupling, the output shaft of the top-drive device by shaft coupling with
The top power transmission shaft connection.
6. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：Drive the bottom
Dynamic device and top-drive device are frequency conversion motor,.
7. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：Drive at the top
Dynamic device is arranged on electric machine support, and the electric machine support is installed on said frame.
8. centrifugal pump impeller combined type rotary polishing apparatus as claimed in claim 1 or 2, it is characterised in that：The cylinder peace
It is mounted on cylinder base, the cylinder floor installation is on the table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256885.7A CN106670954B (en) | 2016-12-30 | 2016-12-30 | A kind of centrifugal pump impeller combined type rotary polishing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256885.7A CN106670954B (en) | 2016-12-30 | 2016-12-30 | A kind of centrifugal pump impeller combined type rotary polishing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106670954A true CN106670954A (en) | 2017-05-17 |
| CN106670954B CN106670954B (en) | 2018-09-07 |
Family
ID=58872375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611256885.7A Active CN106670954B (en) | 2016-12-30 | 2016-12-30 | A kind of centrifugal pump impeller combined type rotary polishing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106670954B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415926A (en) * | 2022-09-23 | 2022-12-02 | 中模智造科技江苏有限公司 | Centrifugal pump impeller combined type rotary polishing device |
| CN115741445A (en) * | 2022-11-21 | 2023-03-07 | 滁州市成业机械制造股份有限公司 | Processing equipment for multistage centrifugal pump impeller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679471B1 (en) * | 1994-04-26 | 1999-07-07 | Emerson Electric Co. | Mechanical drive for dual motion motor used in oscillating spindle sander |
| CN201175872Y (en) * | 2008-03-10 | 2009-01-07 | 浙江工业大学 | External special mixing separator of abrasive grain stream circulating system for barrel finishing |
| CN103612212A (en) * | 2013-12-03 | 2014-03-05 | 浙江工业大学 | Abrasive grain flow polishing device with vane wheel |
| CN103894933A (en) * | 2012-12-25 | 2014-07-02 | 大连深蓝泵业有限公司 | Hydraulic impeller passage polishing device |
| CN206811728U (en) * | 2016-12-30 | 2017-12-29 | 浙江工业大学 | A kind of centrifugal pump impeller combined type rotary polishing apparatus |
-
2016
- 2016-12-30 CN CN201611256885.7A patent/CN106670954B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679471B1 (en) * | 1994-04-26 | 1999-07-07 | Emerson Electric Co. | Mechanical drive for dual motion motor used in oscillating spindle sander |
| CN201175872Y (en) * | 2008-03-10 | 2009-01-07 | 浙江工业大学 | External special mixing separator of abrasive grain stream circulating system for barrel finishing |
| CN103894933A (en) * | 2012-12-25 | 2014-07-02 | 大连深蓝泵业有限公司 | Hydraulic impeller passage polishing device |
| CN103612212A (en) * | 2013-12-03 | 2014-03-05 | 浙江工业大学 | Abrasive grain flow polishing device with vane wheel |
| CN206811728U (en) * | 2016-12-30 | 2017-12-29 | 浙江工业大学 | A kind of centrifugal pump impeller combined type rotary polishing apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415926A (en) * | 2022-09-23 | 2022-12-02 | 中模智造科技江苏有限公司 | Centrifugal pump impeller combined type rotary polishing device |
| CN115415926B (en) * | 2022-09-23 | 2024-02-02 | 中模智造科技江苏有限公司 | Centrifugal pump impeller combined type rotary polishing device |
| CN115741445A (en) * | 2022-11-21 | 2023-03-07 | 滁州市成业机械制造股份有限公司 | Processing equipment for multistage centrifugal pump impeller |
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| Publication number | Publication date |
|---|---|
| CN106670954B (en) | 2018-09-07 |
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