CN102797697A - Light and portable pump impeller - Google Patents
Light and portable pump impeller Download PDFInfo
- Publication number
- CN102797697A CN102797697A CN2012100956317A CN201210095631A CN102797697A CN 102797697 A CN102797697 A CN 102797697A CN 2012100956317 A CN2012100956317 A CN 2012100956317A CN 201210095631 A CN201210095631 A CN 201210095631A CN 102797697 A CN102797697 A CN 102797697A
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- impeller
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Abstract
The invention provides a light and portable pump impeller. The light and portable pump impeller comprises a cover plate, a front blade and a back blade, wherein a connecting part is arranged in the middle of the cover plate; the light and portable pump impeller is arranged on the power output shaft of an engine through the connecting part on the cover plate; at least three front blades are arranged on the front end surface of the cover plate at equal angles; at least three back blades are arranged on the back end surface of the cover plate at equal angles; the cover plate, the front blade and the back plate are integrated; the front blade comprises a front blade end and a back blade end; the back blade end is bent along the counter clockwise direction; and an included angle is formed between the blade front end and the blade back end. By designing a light and portable pump impeller, the conventional impeller structure is improved, so that the high lift of a draining pump can be achieved by adopting a single impeller; and therefore, the light and portable pump impeller provided by the invention can be arranged on the power output shaft of the engine without a shaft coupling for using directly, and the structure of a centrifugal pump can be simplified greatly.
Description
Technical field
The present invention relates to the centrifugal pump fitting field, particularly a kind of light impeller of pump.
Background technique
Water pump is before work, and the pump housing and intake pipe must jar full waters, relies on the impeller of high speed rotating afterwards; Can improve pressure in it thereby make liquid under the inertial centrifugal force effect, obtain energy, when the impeller quick rotation, blade impels water to rotate very soon; The water that is rotating flies to from impeller under action of centrifugal force, and after the water in the pump was dished out, the core of impeller formed vacuum area; The water at water source is pressed onto in the intake pipe through pipe network under the effect of atmospheric pressure (or hydraulic pressure) afterwards, and circulation endlessly just can realize continuous pumpage like this; Because the advantages such as conveying that it has is simple in structure, processing ease, flow are easy to regulate and be applicable to various special nature materials,, often at present adopt multistage centrifugal pump as shown in Figure 1 to draw water in order to reach certain effect of drawing water; So just need a plurality of impellers to be rotated; Therefore need coupling that a plurality of impellers are connected, thereby strengthened the complex structure degree of whole centrifugal pump greatly, make centrifugal pump not portable.
Summary of the invention
To above problem, the present invention improves existing blade wheel structure through a kind of light impeller of pump of design; Therefore make draining pump adopt single impeller can reach very high-lift, use the said impeller of this patent to need not directly to use on the pto that coupling is installed in motor, thereby can simplify centrifugal pump structure greatly; For reaching this purpose, the present invention provides a kind of light impeller of pump, comprises cover plate, front vane and rear blade; Joint is arranged in the middle of the said cover plate; Said light impeller of pump is installed in through the joint on the cover plate on the pto of motor, and the front-end face equal angles of said cover plate is provided with at least 3 front vanes, and the ear end face equal angles of cover plate is provided with at least 3 rear blades; Said cover plate and front vane, rear blade are integrally formed; Said front vane comprises blade front end and blade rearward end, and said blade rearward end is along bending counterclockwise, and blade front end and blade rearward end have angle.
As further improvement of the present invention; Said front vane number is greater than rear blade, and the rear blade number can make pressure balance before and after the blade greater than the front vane number, can avoid because of axial pressure impeller being caused damage; And then influence impeller axial seal, and then reduce impeller working life.
As further improvement of the present invention; Angle is 90 °-175 ° between said blade front end and the blade rearward end; This patent blade front end and blade rearward end can adopt any angle in 90 °-175 °; The effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach the manufacturing degree of difficulty as the case may be and select.
As further improvement of the present invention, adopt circular arc to be connected between said front vane blade front end and the blade rearward end, thereby the employing circular arc is connected the resistance raising that can the significantly reduce current effect of drawing water between front vane blade front end and the blade rearward end.
As further improvement of the present invention; Said blade rearward end comprises free edge portion and back root part, and said back root part is along counterclockwise or clockwise direction bending, and free edge portion and back root part have angle; The blade rearward end adopts the bending design can significantly reduce the resistance of current, improves the effect of drawing water.
As further improvement of the present invention; Angle is 15 °-175 ° between said free edge portion and the back root part; This patent blade front end and blade rearward end can adopt any angle in 15 °-175 °; The effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach the manufacturing degree of difficulty as the case may be and select.
As further improvement of the present invention, adopt circular arc to be connected between the free edge portion of said front vane blade rearward end and the back root part, effect thereby the resistance raising of adopting circular arc to be connected between free edge portion and the back root part can to significantly reduce current is drawn water.
As further improvement of the present invention, said handybilly uses the impeller surface roughness to be 0.8-6.4, and the high more resistance to water-flow of precision is more little, and the effect of drawing water is good more.
As further improvement of the present invention; Said handybilly uses impeller material to mould aluminium as alloy; This patent adopts alloy to mould aluminium ZL205A as main rapidoprint; Because alloy is moulded aluminium ZL205A and had high mechanical property, therefore adopt it can improve the intensity and the mechanical property of whole impeller greatly as main material.
The present invention improves existing blade wheel structure through a kind of light impeller of pump of design, utilizes the indoor current of front vane slosh pump of bending; Thereby can make the liquid in the pump chamber produce the spiral flow that flows to the rotation of pump protecgulum direction; Thereby the flow in the impeller front vane space is boosted, and it is higher that the centrifugal pump that make to adopt the said impeller of this patent and centrifugal pump at the same level are compared boost capability, thereby make pump discharge pressure higher; More stable; Therefore adopt single impeller can reach very high-lift, therefore use the said impeller of this patent to need not directly to use on the pto that coupling is installed in motor, thereby can simplify centrifugal pump structure greatly; Make centrifugal pump structure more light, be easier to use.
Description of drawings
Fig. 1 is existing draining pump internal structure schematic representation;
Fig. 2 is the structural representation of a kind of specific embodiment of the present invention;
Fig. 3 is the structural representation of the another kind of specific embodiment of the present invention;
Fig. 4 is the structural representation of the another kind of specific embodiment of the present invention;
Fig. 5 is the structural representation of the another kind of specific embodiment of the present invention;
Member among the figure is:
1, cover plate; 1-1, joint; 2, front vane; 2-1, blade front end;
2-2, blade rearward end; 2-2-1, free edge portion; 2-2-2, back root part; 3, rear blade;
Embodiment
Below in conjunction with accompanying drawing and embodiment detailed explanation is done in invention:
The present invention is through a kind of light impeller of pump of design; Existing blade wheel structure is improved; Make draining pump adopt single impeller can reach very high-lift; Therefore use the said impeller of this patent to need not directly to use on the pto that coupling is installed in motor, thereby can simplify centrifugal pump structure greatly.
As a kind of specific embodiment of the present invention, the present invention provides structural representation a kind of light impeller of pump as shown in Figure 2, comprises cover plate 1, front vane 2 and rear blade 3; In the middle of the said cover plate 1 joint 1-1 is arranged; Said light impeller of pump is installed on the pto of motor through the joint 1-1 on the cover plate 1, because it is higher make to adopt centrifugal pump and the centrifugal pump at the same level of the said impeller of this patent compare boost capability, pump discharge pressure is higher; More stable; Therefore adopt single impeller can reach the lift of traditional multi-stage impeller, therefore use the said impeller of this patent to need not can directly use on the pto that coupling is installed in motor, the front-end face equal angles of said cover plate 1 is provided with 4 front vanes 2; The ear end face equal angles of cover plate 1 is provided with 6 rear blades 3; Said cover plate 1 is integrally formed with front vane 2, rear blade 3, and this external impeller increases rear blade 3 at the back, can make pressure balance as far as possible in the pump chamber; Thereby can improve the working life of sealing greatly; Said front vane 2 comprises blade front end 2-1 and blade rearward end 2-2, and said blade rearward end 2-2 is along bending counterclockwise, and blade front end 2-1 and blade rearward end 2-2 have angle; Angle is 90 °-175 ° between said blade front end 2-1 and the blade rearward end 2-2; This patent blade front end 2-1 and blade rearward end 2-2 can adopt any angle in 90 °-175 °, and the effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach the manufacturing degree of difficulty as the case may be and select; Adopt circular arc to be connected between said front vane blade front end 2-1 and the blade rearward end 2-2, effect thereby the resistance raising that can significantly reduce current is drawn water.
As the another kind of specific embodiment of the present invention, the present invention provides structural representation a kind of light impeller of pump as shown in Figure 3, comprises cover plate 1, front vane 2 and rear blade 3; In the middle of the said cover plate 1 joint 1-1 is arranged, said light impeller of pump is installed on the pto of motor through the joint 1-1 on the cover plate 1, because it is higher to make the centrifugal pump that adopts the said impeller of this patent and centrifugal pump at the same level compare boost capability; Pump discharge pressure is higher, and is more stable, therefore adopts single impeller can reach the lift of traditional multi-stage impeller; Therefore use the said impeller of this patent to need not can directly use on the pto that coupling is installed in motor, the front-end face equal angles of said cover plate 1 is provided with 5 front vanes 2, and the ear end face equal angles of cover plate 1 is provided with 6 rear blades 3; Said cover plate 1 is integrally formed with front vane 2, rear blade 3; This external impeller increases rear blade 3 at the back, can make pressure balance as far as possible in the pump chamber, thereby can improve the working life of sealing greatly; Said front vane 2 comprises blade front end 2-1 and blade rearward end 2-2; Said blade rearward end 2-2 is along bending counterclockwise, and blade front end 2-1 and blade rearward end 2-2 have angle, and angle is 90 °-175 ° between said blade front end 2-1 and the blade rearward end 2-2; This patent blade front end 2-1 and blade rearward end 2-2 can adopt any angle in 90 °-175 °; The effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach as the case may be and make degree of difficulty and select, and the employing circular arc is connected between said front vane blade front end 2-1 and the blade rearward end 2-2; Thereby the resistance that can significantly reduce current improves the effect of drawing water; Said blade rearward end 2-2 comprises 2-2-1 of free edge portion and back root part 2-2-2, and said back root part 2-2-2 is along bending counterclockwise, and can bend along clockwise direction between this patent free edge 2-2-1 of portion and the back root part 2-2-2 also can be along bending counterclockwise; Adopt clockwise better effects if; Said free edge 2-2-1 of portion and back root part 2-2-2 have angle, and blade rearward end 2-2-1 adopts the bending design can significantly reduce the resistance of current, improves the effect of drawing water; Angle is 15 °-175 ° between said free edge 2-2-1 of portion and the back root part 2-2-2; This patent free edge 2-2-1 of portion and back root part 2-2-2 can adopt any angle in 15 °-175 °, and the effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach the manufacturing degree of difficulty as the case may be and select.
As the another kind of specific embodiment of the present invention, the present invention provides structural representation a kind of light impeller of pump as shown in Figure 4, comprises cover plate 1, front vane 2 and rear blade 3; In the middle of the said cover plate 1 joint 1-1 is arranged, said light impeller of pump is installed on the pto of motor through the joint 1-1 on the cover plate 1, because it is higher to make the centrifugal pump that adopts the said impeller of this patent and centrifugal pump at the same level compare boost capability; Pump discharge pressure is higher, and is more stable, therefore adopts single impeller can reach the lift of traditional multi-stage impeller; Therefore use the said impeller of this patent to need not can directly use on the pto that coupling is installed in motor, the front-end face equal angles of said cover plate 1 is provided with 6 front vanes 2, and the ear end face equal angles of cover plate 1 is provided with 6 rear blades 3; Said cover plate 1 is integrally formed with front vane 2, rear blade 3; This external impeller increases rear blade 3 at the back, can make pressure balance as far as possible in the pump chamber, thereby can improve the working life of sealing greatly; Said front vane 2 comprises blade front end 2-1 and blade rearward end 2-2; Said blade rearward end 2-2 is along bending counterclockwise, and blade front end 2-1 and blade rearward end 2-2 have angle, and angle is 90 °-175 ° between said blade front end 2-1 and the blade rearward end 2-2; This patent blade front end 2-1 and blade rearward end 2-2 can adopt any angle in 90 °-175 °; The effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach as the case may be and make degree of difficulty and select, and the employing circular arc is connected between said front vane blade front end 2-1 and the blade rearward end 2-2; Thereby the resistance that can significantly reduce current improves the effect of drawing water; Said blade rearward end 2-2 comprises 2-2-1 of free edge portion and back root part 2-2-2, and said back root part 2-2-2 bends along clockwise direction, and can bend along clockwise direction between this patent free edge 2-2-1 of portion and the back root part 2-2-2 also can be along bending counterclockwise; Adopt clockwise better effects if; Said free edge 2-2-1 of portion and back root part 2-2-2 have angle, and blade rearward end 2-2-1 adopts the bending design can significantly reduce the resistance of current, improves the effect of drawing water; Angle is 15 °-175 ° between said free edge 2-2-1 of portion and the back root part 2-2-2; This patent free edge 2-2-1 of portion and back root part 2-2-2 can adopt any angle in 15 °-175 °, and the effect and the design difficulty that adopt the different amount impeller to be produced are all different, and producer can reach the manufacturing degree of difficulty as the case may be and select.
As the best specific embodiment of the present invention, the present invention provides structural representation a kind of light impeller of pump as shown in Figure 4, comprises cover plate 1, front vane 2 and rear blade 3; In the middle of the said cover plate 1 joint 1-1 is arranged, said light impeller of pump is installed on the pto of motor through the joint 1-1 on the cover plate 1, because it is higher to make the centrifugal pump that adopts the said impeller of this patent and centrifugal pump at the same level compare boost capability; Pump discharge pressure is higher, and is more stable, therefore adopts single impeller can reach the lift of traditional multi-stage impeller; Therefore use the said impeller of this patent to need not can directly use on the pto that coupling is installed in motor, the front-end face equal angles of said cover plate 1 is provided with 6 front vanes 2, and the ear end face equal angles of cover plate 1 is provided with 5 rear blades 3; Said cover plate 1 is integrally formed with front vane 2, rear blade 3, and this patent can be provided with the front vane 2 and rear blade 3 of respective numbers according to producer's needs, and wherein front vane 2 numbers are best more than rear blade 3; Can make pressure balance before and after the blade like this, therefore can avoid, and then influence impeller axial seal because of axial pressure causes damage to impeller; And then reducing impeller working life, this external impeller increases rear blade 3 at the back, can make pressure balance as far as possible in the pump chamber; Thereby can improve the working life of sealing greatly, said front vane 2 comprises blade front end 2-1 and blade rearward end 2-2, and said blade rearward end 2-2 is along bending counterclockwise; Blade front end 2-1 and blade rearward end 2-2 have angle; Angle is 90 °-175 ° between said blade front end 2-1 and the blade rearward end 2-2, and this patent blade front end 2-1 and blade rearward end 2-2 can adopt any angle in 90 °-175 °, and the effect and the design difficulty that adopt the different amount impeller to be produced are all different; Producer can reach the manufacturing degree of difficulty as the case may be and select; Adopt circular arc to be connected between said front vane blade front end 2-1 and the blade rearward end 2-2, the effect thereby the resistance raising that can significantly reduce current is drawn water, said blade rearward end 2-2 comprises 2-2-1 of free edge portion and back root part 2-2-2; Said back root part 2-2-2 bends along clockwise direction; Can bend along clockwise direction between this patent free edge 2-2-1 of portion and the back root part 2-2-2 also and can adopt clockwise better effects if along bending counterclockwise, said free edge 2-2-1 of portion and back root part 2-2-2 have angle; Blade rearward end 2-2-1 adopts the bending design can significantly reduce the resistance of current; Improve the effect of drawing water, angle is 15 °-175 ° between said free edge 2-2-1 of portion and the back root part 2-2-2, and this patent free edge 2-2-1 of portion and back root part 2-2-2 can adopt any angle in 15 °-175 °; The effect and the design difficulty that adopt the different amount impeller to be produced are all different; Producer can reach as the case may be and make degree of difficulty and select, and adopts circular arc to be connected between the 2-2-1 of free edge portion of said front vane blade rearward end and the back root part 2-2-2, thereby the employing circular arc is connected the resistance raising that can the significantly reduce current effect of drawing water between the 2-2-1 of free edge portion and the back root part 2-2-2.
The said handybilly of this patent uses the impeller surface roughness to be 0.8-6.4, and the high more resistance to water-flow of precision is more little, and the effect of drawing water is good more; Even can efficient be improved 8%; Because this patent handybilly is high with the impeller surface roughness, therefore need to adopt the three-coordinate numerical control machine tool to carry out high-precision processing and compare with the impeller that casting is produced, the processing of adopting the three-coordinate numerical control machine tool to carry out can improve impeller surface degree of finish greatly; The impeller balance of being produced is fabulous; And adopt the impeller that casting produced since have in the impeller pore balance not can, therefore in order to keep balance, often need in impeller, burrow; Therefore the working life of impeller can be reduced greatly, and the impeller effect of drawing water can be influenced.
The said handybilly of this patent uses impeller material to mould aluminium as alloy; This patent adopts alloy to mould aluminium ZL205A as main rapidoprint; Alloy is moulded aluminium ZL205A as the high metallic material of mechanical property; Be used widely at space industry at present, this patent is said to be stated light impeller of pump and adopts this material, can improve the intensity and the mechanical property of whole impeller greatly.
The present invention utilizes the indoor current of front vane 2 slosh pump of bending; Thereby can make the liquid in the pump chamber produce the spiral flow that flows to the rotation of pump protecgulum direction, thereby the flow impeller front vane 2 spaces in is boosted, thus the centrifugal pump that adopts the said impeller of this patent and centrifugal pump at the same level to compare boost capability higher; Pump discharge pressure is higher; More stable, be a plurality of impellers of alternative multistage draining pump with the said impeller of single this patent, thereby can simplify centrifugal pump structure greatly; Make centrifugal pump structure more light, be easier to use.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made any other form, and according to any modification or equivalent variations that technical spirit of the present invention is done, still belongs to the present invention's scope required for protection.
Claims (9)
1. light impeller of pump; Comprise cover plate (1), front vane (2) and rear blade (3); It is characterized in that: joint (1-1) is arranged in the middle of the said cover plate (1); Said light impeller of pump is installed on the pto of motor through the joint (1-1) on the cover plate (1), and the front-end face equal angles of said cover plate (1) is provided with at least 3 front vanes (2), and the ear end face equal angles of cover plate (1) is provided with at least 3 rear blades (3); Said cover plate (1) and front vane (2), rear blade (3) are integrally formed; Said front vane (2) comprises blade front end (2-1) and blade rearward end (2-2), and said blade rearward end (2-2) is along bending counterclockwise, and blade front end (2-1) has angle with blade rearward end (2-2).
2. a kind of light impeller of pump according to claim 1 is characterized in that: said front vane (2) number is greater than rear blade (3).
3. a kind of light impeller of pump according to claim 1 is characterized in that: angle is 90 °-175 ° between said blade front end (2-1) and the blade rearward end (2-2).
4. a kind of light impeller of pump according to claim 3 is characterized in that: adopt circular arc to be connected between said front vane (2) blade front end (2-1) and the blade rearward end (2-2).
5. according to claim 1 or 4 described a kind of light impeller of pump; It is characterized in that: said blade rearward end (2-2) comprises free edge portion (2-2-1) and back root part (2-2-2); Said back root part (2-2-2) is along counterclockwise or clockwise direction bending, and free edge portion (2-2-1) has angle with back root part (2-2-2).
6. a kind of light impeller of pump according to claim 5 is characterized in that: angle is 15 °-175 ° between said free edge portion (2-2-1) and the back root part (2-2-2).
7. a kind of light impeller of pump according to claim 6 is characterized in that: adopt circular arc to be connected between the free edge portion (2-2-1) of said front vane (2) blade rearward end (2-2) and the back root part (2-2-2).
8. according to claim 4 or 7 described a kind of light impeller of pump, it is characterized in that: said handybilly uses the impeller surface roughness to be 0.8-6.4.
9. a kind of light impeller of pump according to claim 8, it is characterized in that: said handybilly uses impeller material to mould aluminium as alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100956317A CN102797697A (en) | 2012-04-01 | 2012-04-01 | Light and portable pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100956317A CN102797697A (en) | 2012-04-01 | 2012-04-01 | Light and portable pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102797697A true CN102797697A (en) | 2012-11-28 |
Family
ID=47196944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100956317A Pending CN102797697A (en) | 2012-04-01 | 2012-04-01 | Light and portable pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102797697A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN102797696A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN103537985A (en) * | 2013-09-30 | 2014-01-29 | 陈美青 | Automatic dust-collection polishing machine |
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN109139534A (en) * | 2018-09-18 | 2019-01-04 | 安徽正华电气有限公司 | A kind of stable fan blade and its formula |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317692A (en) * | 1996-05-23 | 1997-12-09 | Mitsubishi Heavy Ind Ltd | Centrifugal impeller of rotational fluid machinery |
| CN201031817Y (en) * | 2007-04-26 | 2008-03-05 | 李世煌 | Centrifugal impeller |
| CN102797696A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN202597227U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN202597231U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Lightweight pump impeller |
| CN202597228U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Impeller for light pump |
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2012
- 2012-04-01 CN CN2012100956317A patent/CN102797697A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317692A (en) * | 1996-05-23 | 1997-12-09 | Mitsubishi Heavy Ind Ltd | Centrifugal impeller of rotational fluid machinery |
| CN201031817Y (en) * | 2007-04-26 | 2008-03-05 | 李世煌 | Centrifugal impeller |
| CN102797696A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN202597227U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN202597231U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Lightweight pump impeller |
| CN202597228U (en) * | 2012-04-01 | 2012-12-12 | 苏州市世强流体技术有限公司 | Impeller for light pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN102797696A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Novel pump impeller |
| CN103537985A (en) * | 2013-09-30 | 2014-01-29 | 陈美青 | Automatic dust-collection polishing machine |
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN105387893B (en) * | 2015-12-11 | 2020-02-11 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flowmeter and turbine flowmeter thereof |
| CN109139534A (en) * | 2018-09-18 | 2019-01-04 | 安徽正华电气有限公司 | A kind of stable fan blade and its formula |
| CN109139534B (en) * | 2018-09-18 | 2020-06-30 | 安徽正华电气有限公司 | Stable fan blade and formula thereof |
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Application publication date: 20121128 |