CN203783918U - Multi-rotor pipeline pump - Google Patents
Multi-rotor pipeline pump Download PDFInfo
- Publication number
- CN203783918U CN203783918U CN201420205573.3U CN201420205573U CN203783918U CN 203783918 U CN203783918 U CN 203783918U CN 201420205573 U CN201420205573 U CN 201420205573U CN 203783918 U CN203783918 U CN 203783918U
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- tooth
- rotating speed
- rotor
- circle
- pipeline pump
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- 239000000463 material Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 210000000515 tooth Anatomy 0.000 claims description 89
- 238000006062 fragmentation reaction Methods 0.000 claims description 11
- 238000013467 fragmentation Methods 0.000 claims description 10
- 235000012489 doughnuts Nutrition 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model aims to solve the technical problem of providing a multi-rotor pipeline pump to increase the line speed of a rotor so as to increase the shearing rate of a working head on the material. The multi-rotor pipeline pump is characterized by comprising a material feeding cavity, a material discharging cavity and a working head component, wherein the working head component comprises a high-speed rotor and a low-speed rotor, and the multi-rotor pipeline pump is provided with a high rotating speed side a low rotating speed side; the high rotating speed side comprises a driving device, a driving shaft, a bearing box, and a mechanical sealing component; the driving device is used for driving the driving shaft, the bearing box is used for supporting the driving shaft, and the mechanical sealing component is used for sealing the clearance between the driving shaft and the material feeding cavity; the low rotating speed side comprises a driving device, a driving shaft, a bearing box, a mechanical sealing component; the driving device is used for driving the driving shaft, the bearing box is used for supporting the driving shaft, and the mechanical sealing component is used for sealing the clearance between the driving shaft and the material discharging cavity; the driving shaft on the high rotating speed side is connected with the high-speed rotor, and the driving shaft on the low rotating speed side is connected with the low-speed rotor, so that the rotation direction of the high-speed rotor is opposite to that of the low-speed rotor, thereby increasing the shearing rate of the working head on the material.
Description
Technical field
The utility model relates to emulsifying device, relates in particular to the pipeline pump that possesses emulsification function.
Background technique
Existing pipeline pump, comprises a frequency conversion or common electric machine, coupling, a set of mechanical seal, a working cavity, one group of work head assembly composition.Improve the needed energy consumption of linear velocity by the diameter that promotes rotor, will inevitably be far longer than by promoting rotating speed and improve the needed power of linear velocity, therefore promote linear velocity by increasing root diameter, do not have energy-conservation effect.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of many rotors pipeline pump, increases the linear velocity of rotor, to improve the shear rate of working head to material.
For solving the problems of the technologies described above, the utility model provides a kind of many rotors pipeline pump, be characterized in, comprise charging cavity, discharging cavity and work head assembly, work head assembly comprises high speed rotor and low speed rotor, this many rotors pipeline pump has the high side of rotating speed and rotating speed downside, comprise drive unit in the high side of rotating speed, the live axle being driven by drive unit, the bearing housing of supporting driving shaft, the mechanical sealing assembly that gap between live axle and charging cavity is sealed, comprise drive unit at rotating speed downside, the live axle being driven by drive unit, the bearing housing of supporting driving shaft, the mechanical sealing assembly that gap between live axle and discharging cavity is sealed, the live axle of the high side of rotating speed connects high speed rotor, the live axle of rotating speed downside connects low speed rotor, so that the switched in opposite of high speed rotor and low speed rotor, and then the shear rate of raising work head assembly to material.
Described many rotors pipeline pump, its further feature is, and the drive unit of the high side of rotating speed comprises the high side motor of rotating speed and belt drive system, and the high side motor of rotating speed drives its corresponding live axle by belt drive system.
Described many rotors pipeline pump, its further feature is, and the drive unit of rotating speed downside comprises rotating speed downside motor and belt drive system, and rotating speed downside motor drives its corresponding live axle by belt drive system.
Described many rotors pipeline pump, its further feature is, and high speed rotor comprises inside and outside two circle teeth, and two circle teeth arrange in the same side; Low speed side rotor has blade and inside and outside two circle teeth, and blade and tooth are back-to-back installation; Two circle intervals, flank of tooth opposite installations of two circle teeth and low speed rotors of high speed rotor, so that each described tooth provides shearing force for material fragmentation, each described blade provides power for material throws away cavity.
Described many rotors pipeline pump, its further feature is that the power of the motor of the high side of rotating speed is greater than the power of the motor of rotating speed downside.
Described many rotors pipeline pump, its further feature is, and low speed rotation attached bag is drawn together two-part, and first portion comprises blade and blade base; Blade base has angle of inclination from edge to center, spending as reference point taking outermost circle 0, respectively centered by clockwise and counterclockwise predetermined angle, the outermost circle of blade base is obtained cut portion by two identical circular excisions of size, outermost fenestra between two cut portions is cut out, so that smooth transition between two cut portions, taking blade base center as benchmark, be evenly arranged many group excision objects the circumference week of outermost circle, blade becomes streamline arc convex, projection, from excising the segmental arc center starting of remaining outermost circle, ends at the center of blade base; Second portion comprises donut and inside and outside tooth, internal tooth is that multi-disc is distributed in inner circumference, internal tooth partial center is arranged, the internal tooth eccentric angle of arranging with the Central Symmetry of donut is identical, and the adjacent internal tooth eccentric angle difference of circumferencial direction, multiple external tooths are distributed in the excircle partial center of donut and place, and external tooth is identical with adjacent internal tooth eccentric angle, and keep predetermined spacing with adjacent internal tooth.
Described many rotors pipeline pump, its further feature is, and high speed rotor comprises rotator seat and is positioned at an outer field circle tooth and is positioned at a circle tooth of internal layer, and two circle teeth are all positioned at the same side of rotator seat; The tooth that is positioned at internal layer is cuboid, cuts away the major part of transverse tooth thickness near circle centre position, but be not resected to the end with inclined-plane, makes this cuboid have the function of blade, so that can realize the fragmentation of material, the tooth of internal layer is eccentric and be distributed in the center of circle; Be positioned at the circumference that outer field tooth is distributed in rotator seat, outer field tooth is identical with the transverse tooth thickness degree of internal layer, and is also that the inclined to one side center of circle is arranged.
The advantage of many rotors of high linear speed pipeline pump of the present utility model: the increase of linear velocity, working head also increases the shear rate of material, make in same time by the material particular diameter of this equipment more carefully more evenly, more save energy consumption compared with existing pipeline pump, the working efficiency of lifting means.
Brief description of the drawings
The above and other feature of the present utility model, character and advantage are by by becoming more obvious below in conjunction with the description of drawings and Examples, wherein:
Fig. 1 is the plan view of many rotors pipeline pump of an embodiment of the utility model.
Fig. 2 is the plan view of the work head assembly of many rotors pipeline pump of an embodiment of the utility model.
Fig. 3 is that K that in Fig. 2, (1) is located is to view.
Fig. 4 is that K that in Fig. 2, (2) are located is to view.
Fig. 5 is that the blade base of the first portion of the low speed rotor of an embodiment's of the utility model work head assembly forms schematic diagram.
Fig. 6 is the plan view of the high speed rotor of an embodiment's of the utility model work head assembly.
Fig. 7 is the right elevation of the high speed rotor of an embodiment's of the utility model work head assembly.
Fig. 8 is the plan view of the pipeline pump of a comparative example of the present utility model.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail; set forth in the following description more details so that fully understand the utility model; but the utility model obviously can be implemented with the multiple alternate manner that is different from this description; those skilled in the art can do similar popularization, deduction according to practical situations without prejudice to the utility model intension in the situation that, therefore should be with the content constraints of this specific embodiment protection domain of the present utility model.
Fig. 1 to Fig. 7 shows the structure of an embodiment's of the utility model rotor pipeline pump.It should be noted that these and follow-up other accompanying drawing are all only as example, it is not to draw according to the condition of equal proportion, and should be using this as the protection domain of the utility model actual requirement is construed as limiting.
As shown in Figure 1, many rotors pipeline pump has the high side of rotating speed and rotating speed downside, the live axle 72 that comprise drive unit 12 in the high side of rotating speed, is driven by drive unit 12, the bearing housing 32 of supporting driving shaft 72, the mechanical sealing assembly 42 that the gap between live axle 72 and charging cavity 5 is sealed, the live axle 71 that comprise drive unit 11 at rotating speed downside, is driven by drive unit 11, the bearing housing 31 of supporting driving shaft 71, the mechanical sealing assembly 41 that the gap between live axle 71 and discharging cavity 6 is sealed.Charging cavity 5 and discharging cavity 6 can be also integrated two cavitys.Work head assembly 8 as shown in Figure 2, comprise high speed rotor and low speed rotor, high speed rotor refers to the rotor with relative high speed running connecting with the live axle 72 of the high side of rotating speed, and low speed rotor refers to the rotor with relatively low speed running that the live axle 71 of rotating speed downside connects.
The drive unit 12 of the high side of rotating speed comprises the high side motor of rotating speed and belt drive system 22, and the high side motor of rotating speed drives its corresponding live axle 72 by belt drive system 22.But be not limited to this, drive unit 12 can also be the moving live axle 72 of motor straight tape splicing that can export corresponding moment of torsion, or drives live axle 72 by motor.But preferably carry out transmission by belt drive system 22, can play so the multiple benefits such as vibration damping.Belt drive system can adopt speedup design, and motor adopts variable-frequency motor, can be at any time requires the rotating speed of the equipment of adjusting according to the flow of equipment and particle diameter.
Same, the drive unit of rotating speed downside, in preferred embodiment as shown in the figure, comprises rotating speed downside motor and belt drive system 21, rotating speed downside motor drives its corresponding live axle 71 by belt drive system 21.
As previously mentioned, the live axle 72 of the high side of rotating speed connects high speed rotor, and the live axle 71 of rotating speed downside connects low speed rotor, so that the switched in opposite of high speed rotor and low speed rotor, and then improve the shear rate of work head assembly to material.
The power of motor of the high side of rotating speed is greater than opposite side power of motor, Main Function: bring material into working cavity, and carry out running at a high speed, play main shear action.Opposite side motor speed is relatively low, does driven shear action.
The running that bearing housing 31,32 is live axle 71,72 provides support a little, ensures the balance of spindle.The design of high speed rotor and low speed rotor will be carried out fragmentation to material on the one hand, on the other hand, material be thrown away to discharging cavity, and generally, high speed rotor comprises inside and outside two circle teeth, and two circle teeth arrange in the same side.Low speed side rotor has blade and inside and outside two circle teeth, and blade and tooth are back-to-back installation.Two circle intervals, flank of tooth opposite installations of two circle teeth and low speed rotors of high speed rotor, so that each described tooth provides shearing force for material fragmentation, each described blade provides power for material throws away cavity.High speed rotor is knife-type and tooth-like, and tooth and blade are all positioned at the same side.Low speed side rotor is also knife-type and tooth-like, knife-type and tooth-like be back-to-back installation.The blade rotor of low speed side provides power for material throws away cavity; Profile of tooth rotor provides shearing force for material fragmentation.
In embodiment as shown in Figures 2 to 5, low speed rotation attached bag is drawn together two-part.As shown in Figures 3 to 5, first portion comprises blade 811 and blade base 81.Blade base 81 has angle of inclination from outermost edge to center, for example, be 10 degree.(in Fig. 5 taking horizontal line as example) is as reference point spending with outermost circle 0, respectively centered by clockwise and counterclockwise predetermined angle, the outermost circle of blade base 81 is obtained cut portion 81B by two identical circular 81A excisions of size, outermost fenestra between two cut portion 81B is cut out, obtain transition part 81C, transition part 81C makes smooth transition between two cut portion 81B, Fig. 5 shows the forming principle of blade base, but aforementioned description does not really want to limit moulding process or the profile cutter of blade base, at this only for by clear to the shape of blade base 81 or structure explanation.Continue with reference to Fig. 3 and Fig. 5, taking blade base 81 centers as benchmark, be evenly arranged many group excision objects 812 (being formed by the transition part 81C between two cut portion 81B and two cut portion 81B) the circumference week of outermost circle.811 one-tenth streamline arc convex of blade, as shown in Figure 3, projection, from excising the segmental arc center starting of remaining outermost circle, ends at the center of blade base.In Fig. 5, taking outermost circle 0 degree as reference point, centered by spending with counterclockwise 13 clockwise, form cut portion 81B respectively, now outermost circle 0 is spent anticlockwise first blade 811 across 28 degree between 76 degree.In Fig. 5, be divided into and be furnished with 6 blades 811, be similar to plum blossom shape.
As shown in Figure 4, the second portion of low speed rotor comprises donut 82 and internal tooth 821, external tooth 822, multiple internal tooths 822 are distributed in inner circumference for multi-disc, internal tooth 822 partial centers are arranged (its sensing departs from the center of circle), the internal tooth 822 of arranging taking the Central Symmetry of donut 82 two internal tooths 822 of cornerwise two ends (in the drawings as) eccentric angle is identical, and the adjacent internal tooth 822 eccentric angle differences of circumferencial direction, multiple external tooths 822 are distributed in the excircle partial center of donut 82 and place (sensing departs from the center of circle), external tooth 822 is identical with adjacent internal tooth 821 eccentric angles, and keep predetermined spacing with adjacent internal tooth 821.
As shown in Figure 6 and Figure 7, high speed rotor comprises rotator seat 83 and circle tooth 832, two circle 831,832 teeth that are positioned at an outer field circle tooth 831 and are positioned at internal layer are all positioned at the same side of rotator seat 83.The tooth 832 that is positioned at internal layer is cuboid, cut away the major part of transverse tooth thickness with inclined-plane near circle centre position, cut out 7/9 of cuboid, but be not resected to the end, form cut portion 832A, make this cuboid there is the function of blade, so that can realize the fragmentation of material, as shown in Figure 7, the tooth 832 of internal layer is eccentric and be distributed in the center of circle, the generation that it can effectively prevent eddy current in pipeline, makes material moment under the effect of centrifugal force be broken and throw away.Be positioned at the circumference that outer field tooth 831 is distributed in rotator seat 83, outer field tooth 831 is identical with tooth 832 thickness of internal layer, and is also that the inclined to one side center of circle is arranged.The material particular diameter that the quantity of each tooth 831,832 and the distance of tooth and between cog can reach according to final requirement designs.While being passed through external tooth 831 by the material after internal tooth 832 fragmentations, because tooth 831 spacing are less, produce finer fragmentation, thereby reach the object of homogeneous.
After high speed rotor matches with low speed rotor, the tooth of the two ensures that at axial direction the spacing between two rotors is not more than 2 millimeters, is radially ensureing that the spacing between two rotors is not more than 0.1 millimeter, also can be according to the size of the different adjustment spacing of material.
In addition, the blade of low speed rotor and the internal tooth of high speed rotor are all that partial center is arranged, blade or the tooth that plays blade effect drive material to carry out running at a high speed and produce centrifugal force at blade or tooth place in the time running up, and make material respectively by after tooth fragmentation, throw away cavity.
For the ease of more in depth understanding previous embodiment, Fig. 8 shows a comparative example, and rotor pipeline pump wherein comprises motor 91, coupling 92, mechanical sealing assembly 93, rotor 94 and active chamber 95.
Work head assembly is divided into stator and rotor, stator and cavity 95 integral types, and for fixed, rotor 94 turns round under the drive of motor 91, and the rotating speed of motor 91 is rating value, can not rely on increase motor 91 rotating speeds to increase the linear velocity of pipeline pump completely.As need increase linear velocity, can only realize by increasing rotor 94 diameters.
According to formula:
P＝Np*ρ*N
3*d
5
P---power of motor
Np---power factor
Ρ---material density
N---rotating speed
D---root diameter
Can find out, when in the constant situation of power factor, material density, can, by promoting rotating speed or increasing root diameter, improve the linear velocity of equipment.
But, improve the needed energy consumption of linear velocity by the diameter that promotes rotor 94, will inevitably be far longer than by promoting rotating speed and improve the needed power of linear velocity, therefore promote linear velocity by increasing root diameter, do not have energy-conservation effect.
According to formula V=π * D*N/60
V---linear velocity
π——3.14
D---root diameter
N---rotating speed
In the constant situation of root diameter, can improve by improving the rotating speed of two relative rotors the linear velocity of equipment.Bus speed=low speed side linear velocity+high-speed side linear velocity of equipment, in the situation that not changing motor rated power, can obtain higher linear velocity.
Shearing rate=linear velocity/rotor gap
In the constant situation in rotor gap, linear velocity ↑, the shearing rate of equipment also ↑.The two rotor rotating speed differences that relatively turn round, produce speed difference, make to throw away from the gap between rotor by the material of rotor, thereby are broken.
Therefore, by contrast, improve the needed energy consumption of linear velocity by the diameter that promotes rotor, will inevitably be far longer than by promoting rotating speed and improve the needed power of linear velocity.
The advantage of many rotors of previous embodiment high linear speed pipeline pump of the present utility model: the increase of linear velocity, working head also increases the shear rate of material.Make in same time by the material particular diameter of this equipment more carefully more evenly, more save energy consumption compared with existing pipeline pump, the working efficiency of lifting means.
Many rotors of high linear speed pipeline pump of previous embodiment of the present utility model can be applied to the occasion that needs high linear speed emulsification: as the demulsification technology in fine chemistry industry.
Although the utility model with preferred embodiment openly as above, it is not for limiting the utility model, and any those skilled in the art, not departing from spirit and scope of the present utility model, can make possible variation and amendment.Therefore, every content that does not depart from technical solutions of the utility model, any amendment, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, within all falling into the protection domain that the utility model claim defines.
Claims (7)
1. more than rotor pipeline pump, it is characterized in that, comprise charging cavity, discharging cavity and work head assembly, work head assembly comprises high speed rotor and low speed rotor, this many rotors pipeline pump has the high side of rotating speed and rotating speed downside, comprise drive unit in the high side of rotating speed, the live axle being driven by drive unit, the bearing housing of supporting driving shaft, the mechanical sealing assembly that gap between live axle and charging cavity is sealed, comprise drive unit at rotating speed downside, the live axle being driven by drive unit, the bearing housing of supporting driving shaft, the mechanical sealing assembly that gap between live axle and discharging cavity is sealed, the live axle of the high side of rotating speed connects high speed rotor, the live axle of rotating speed downside connects low speed rotor, so that the switched in opposite of high speed rotor and low speed rotor, and then the shear rate of raising work head assembly to material.
2. many rotors pipeline pump as claimed in claim 1, is characterized in that, the drive unit of the high side of rotating speed comprises the high side motor of rotating speed and belt drive system, and the high side motor of rotating speed drives its corresponding live axle by belt drive system.
3. many rotors pipeline pump as claimed in claim 1, is characterized in that, the drive unit of rotating speed downside comprises rotating speed downside motor and belt drive system, and rotating speed downside motor drives its corresponding live axle by belt drive system.
4. many rotors pipeline pump as claimed in claim 1, is characterized in that, high speed rotor comprises inside and outside two circle teeth, and two circle teeth arrange in the same side; Low speed side rotor has blade and inside and outside two circle teeth, and blade and tooth are back-to-back installation; Two circle intervals, flank of tooth opposite installations of two circle teeth and low speed rotors of high speed rotor, so that each described tooth provides shearing force for material fragmentation, each described blade provides power for material throws away cavity.
5. many rotors pipeline pump as claimed in claim 2, is characterized in that, the power of the motor of the high side of rotating speed is greater than the power of the motor of rotating speed downside.
6. many rotors pipeline pump as claimed in claim 1, is characterized in that, low speed rotation attached bag is drawn together two-part, and first portion comprises blade and blade base; Blade base has angle of inclination from edge to center, spending as reference point taking outermost circle 0, respectively centered by clockwise and counterclockwise predetermined angle, the outermost circle of blade base is obtained cut portion by two identical circular excisions of size, outermost fenestra between two cut portions is cut out, so that smooth transition between two cut portions, taking blade base center as benchmark, be evenly arranged many group excision objects the circumference week of outermost circle, blade becomes streamline arc convex, projection, from excising the segmental arc center starting of remaining outermost circle, ends at the center of blade base; Second portion comprises donut and inside and outside tooth, internal tooth is that multi-disc is distributed in inner circumference, internal tooth partial center is arranged, the internal tooth eccentric angle of arranging with the Central Symmetry of donut is identical, and the adjacent internal tooth eccentric angle difference of circumferencial direction, multiple external tooths are distributed in the excircle partial center of donut and place, and external tooth is identical with adjacent internal tooth eccentric angle, and keep predetermined spacing with adjacent internal tooth.
7. the many rotors pipeline pump as described in claim 1 or 6, is characterized in that, high speed rotor comprises rotator seat and be positioned at an outer field circle tooth and be positioned at a circle tooth of internal layer, and two circle teeth are all positioned at the same side of rotator seat; The tooth that is positioned at internal layer is cuboid, cuts away the major part of transverse tooth thickness near circle centre position, but be not resected to the end with inclined-plane, makes this cuboid have the function of blade, so that can realize the fragmentation of material, the tooth of internal layer is eccentric and be distributed in the center of circle; Be positioned at the circumference that outer field tooth is distributed in rotator seat, outer field tooth is identical with the transverse tooth thickness degree of internal layer, and is also that the inclined to one side center of circle is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205573.3U CN203783918U (en) | 2014-04-25 | 2014-04-25 | Multi-rotor pipeline pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205573.3U CN203783918U (en) | 2014-04-25 | 2014-04-25 | Multi-rotor pipeline pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783918U true CN203783918U (en) | 2014-08-20 |
Family
ID=51320111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205573.3U Expired - Lifetime CN203783918U (en) | 2014-04-25 | 2014-04-25 | Multi-rotor pipeline pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899543A (en) * | 2014-04-25 | 2014-07-02 | 上海弗鲁克科技发展有限公司 | Multi-rotor pipeline pump |
| CN104801218A (en) * | 2015-04-16 | 2015-07-29 | 刘金辉 | Double-rotor pipeline type emulsifying machine |
-
2014
- 2014-04-25 CN CN201420205573.3U patent/CN203783918U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899543A (en) * | 2014-04-25 | 2014-07-02 | 上海弗鲁克科技发展有限公司 | Multi-rotor pipeline pump |
| CN103899543B (en) * | 2014-04-25 | 2016-08-24 | 上海弗鲁克科技发展有限公司 | Many rotors in-line pump |
| CN104801218A (en) * | 2015-04-16 | 2015-07-29 | 刘金辉 | Double-rotor pipeline type emulsifying machine |
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Granted publication date: 20140820 |
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