CN110821826A - Stainless steel rotor, fluid pump and machining method of stainless steel rotor - Google Patents
Stainless steel rotor, fluid pump and machining method of stainless steel rotor Download PDFInfo
- Publication number
- CN110821826A CN110821826A CN201911034018.2A CN201911034018A CN110821826A CN 110821826 A CN110821826 A CN 110821826A CN 201911034018 A CN201911034018 A CN 201911034018A CN 110821826 A CN110821826 A CN 110821826A
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- Prior art keywords
- mounting hole
- stainless steel
- rotating shaft
- steel rotor
- shaft part
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Abstract
The invention discloses a stainless steel rotor, which is characterized by being used for a fluid pump for food and medicine production equipment, and the stainless steel rotor comprises: a rotating shaft part; the impeller part is positioned on the periphery of the rotating shaft part and is provided with three blades which are uniformly distributed along the circumferential direction; wherein, the rotating shaft part and the impeller part are integrally formed. Based on the technical scheme of this application, can make stainless steel rotor have at least acid and alkali corrosion resistance, the structure is reliable, the performance satisfies the operating requirement's beneficial effect.
Description
Technical Field
The invention relates to the field of parts for food and medicine production equipment, in particular to the field of parts for a fluid pump, and specifically relates to a stainless steel rotor, a fluid pump and a processing method of the stainless steel rotor.
Background
The rotor is an execution component for rotating, extruding and pushing the raw materials of the fluid pump, wherein one end of the rotor is connected with a shaft as an input end of power, the rotor is generally used by combining two components, and the fluid output function of the fluid pump is realized by meshing, rotating and extruding particles in the raw materials and pushing the particles.
Because the two rotors are used in a group, the fineness of particles is influenced by the meshing rotating gap, the requirement on the profile degree of the rotor profile is higher, and meanwhile, in order to keep stable output, the high precision requirement on the coaxiality of the profile and the rotating center is also met; meanwhile, the rotor needs to be in contact with food and medicine raw materials, and is required to be easy to clean and disinfect and resistant to acid and alkali corrosion.
The existing rotor has insufficient processing precision, is difficult to meet the use requirement of a fluid pump used in the field of food and medicine equipment, cannot ensure the fineness of particles in rotary extrusion raw materials, and is difficult to meet the use requirement.
Disclosure of Invention
At least one object of the present invention is to provide a stainless steel rotor, a fluid pump, and a method of machining a stainless steel rotor. The stainless steel rotor has the advantages of acid and alkali corrosion resistance, reliable structure and performance meeting the use requirement. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a stainless steel rotor, which is characterized in that the stainless steel rotor is used for a fluid pump for food and medicine production equipment, and comprises:
a rotating shaft part;
the impeller part is positioned on the periphery of the rotating shaft part and is provided with three blades which are uniformly distributed along the circumferential direction;
wherein, the rotating shaft part and the impeller part are integrally formed.
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
the first mounting hole is formed in the first end of the rotating shaft; and
the second mounting hole is formed in the second end of the rotating shaft;
the center lines of the first mounting hole and the second mounting hole are coincident with the axis of the rotating shaft part.
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
and the connecting holes are formed in the rotating shaft part and are positioned between the first mounting hole and the second mounting hole along the axial direction of the rotating shaft part.
As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or the following paragraphs, the number of the plurality of connecting holes is three, in a direction perpendicular to the axis of the rotating shaft, centers of the three connecting holes are distributed at three vertexes of a first equilateral triangle, three vertexes of the blades are distributed at three vertexes of a second equilateral triangle, and a high line of the first equilateral triangle coincides with a high line of the second equilateral triangle.
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
and the positioning mark hole is formed in the end face, close to the first mounting hole, of the impeller part and is positioned on a height line of the second equilateral triangle.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first mounting hole and the second mounting hole are machined based on the positioning mark hole, so that the coaxiality of the first mounting hole and the second mounting hole does not exceed the coaxiality of the first mounting hole and the second mounting hole
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
the first sealing groove is arranged at the outer edge of the first mounting hole; and
and the second sealing groove is arranged in the first mounting hole, and a set distance is reserved between the second sealing groove and the first sealing groove along the axial direction of the rotating shaft part.
The invention provides a fluid pump, which comprises a stainless steel rotor according to any one of the technical schemes.
The invention provides a method for processing a stainless steel rotor, which comprises the following steps:
selecting an acid and alkali corrosion resistant stainless steel bar blank;
roughly turning two end faces of the bar blank to provide a rough reference for subsequent processing;
performing linear cutting on the outline of the bar blank, and reserving machining allowance for the subsequent machining outline;
processing a first mounting hole and a second mounting hole at two ends of the bar blank by using a precise numerical control lathe; and
and machining a positioning mark hole by using a numerical control machining center, machining the outline of the impeller part by taking the positioning mark hole as a reference, and correcting the coaxiality of the first mounting hole and the second mounting hole.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the processing method further includes:
after the coaxiality of the first mounting hole and the second mounting hole is corrected, a plurality of connecting holes are machined in the rotating shaft part by using a numerical control machining center, and a first sealing groove and a second sealing groove are machined in the inner circumferential surface of the first mounting hole.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
the stainless steel bar material is adopted for processing, so that the performance requirement of acid and alkali corrosion resistance of the part is met; the bar blank is subjected to line cutting after the end face is roughly turned, so that the processing amount of subsequent processing is reduced, and the deformation after finish machining is reduced; the high-precision numerical control lathe and the numerical control machining center are adopted for machining, the high-precision size requirements and the relative position requirements of the holes, the connecting holes and the sealing grooves are effectively guaranteed, errors during the assembly of the whole machine are reduced, the assembly efficiency is improved, and the performance of the whole machine is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a stainless steel rotor in a front view according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional structural view of a stainless steel rotor in a side view according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a stainless steel rotor according to an embodiment of the present invention;
reference numerals: 1. wheel shaft portion, 2, impeller portion, 3, first mounting hole, 4, second mounting hole, 5, connecting hole, 6, location mark hole, 7, first seal groove, 8, second seal groove.
Detailed Description
The contents of the present invention and the points of distinction between the present invention and the prior art can be understood with reference to the accompanying drawings and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown. It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any technical means provided by the invention can be replaced or any two or more technical means or technical characteristics provided by the invention can be combined with each other to obtain a new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without inventive efforts and new technical solutions that can be obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.
The embodiment of the invention provides a stainless steel rotor, which is characterized by being used for a fluid pump for food and medicine production equipment, and the stainless steel rotor comprises:
a rotating shaft part;
the impeller part is positioned on the periphery of the rotating shaft part and is provided with three blades which are uniformly distributed along the circumferential direction;
wherein, the rotating shaft part and the impeller part are integrally formed.
Stainless steel is resistant to the corrosion of weak corrosive media such as air, steam, water and the like and chemical corrosive media (such as acid, alkali, salt and the like), has good plasticity, toughness, weldability, corrosion resistance and no magnetism or weak magnetism, has good corrosion resistance in oxidizing and reducing media, and is commonly used for manufacturing acid-resistant equipment, such as corrosion-resistant containers, equipment linings, conveying pipelines, nitric acid-resistant equipment parts and the like. Because of these characteristics, it is also widely used in the fields of food and medicine production equipment which have high requirements for acid and alkali corrosion resistance. Therefore, the corrosion-resistant stainless steel bar is adopted for mechanical processing.
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
the first mounting hole is formed in the first end of the rotating shaft; and
the second mounting hole is formed in the second end of the rotating shaft;
the center lines of the first mounting hole and the second mounting hole are coincident with the axis of the rotating shaft part.
As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the stainless steel rotor further includes:
and the connecting holes are formed in the rotating shaft part and are positioned between the first mounting hole and the second mounting hole along the axial direction of the rotating shaft part.
In order to reduce the dynamic unbalance degree of the rotor, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the number of the plurality of connecting holes is three, in a direction perpendicular to the axis of the rotating shaft portion, centers of the three connecting holes are distributed at three vertices of a first equilateral triangle, three vertices of the blades are distributed at three vertices of a second equilateral triangle, and a high line of the first equilateral triangle coincides with a high line of the second equilateral triangle.
Further, in order to improve the machining precision of the rotor and reduce the influence of the positioning reference on the dynamic unbalance of the rotor as much as possible, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following, the stainless steel rotor further comprises:
and the positioning mark hole is formed in the end face, close to the first mounting hole, of the impeller part and is positioned on a height line of the second equilateral triangle.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first mounting hole and the second mounting hole are machined based on the positioning mark hole, so that the coaxiality of the first mounting hole and the second mounting hole does not exceed the coaxiality of the first mounting hole and the second mounting hole
In order to avoid the adverse effect of the residues of the rotor processing materials on the rotor connecting part, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following, the stainless steel rotor further comprises:
the first sealing groove is arranged at the outer edge of the first mounting hole; and
and the second sealing groove is arranged in the first mounting hole, and a set distance is reserved between the second sealing groove and the first sealing groove along the axial direction of the rotating shaft part.
The invention provides a fluid pump, which comprises a stainless steel rotor according to any one of the technical schemes.
The invention provides a method for processing a stainless steel rotor, which comprises the following steps:
selecting an acid and alkali corrosion resistant stainless steel bar blank; the rotor is processed by using an acid-alkali corrosion resistant stainless steel bar material, so that the corrosion resistance requirement required by design is met.
Roughly turning two end faces of the bar blank to provide a rough reference for subsequent processing; the rotor performs rough end face turning on the bar stock to set a rough reference for subsequent processing.
Performing linear cutting on the outline of the bar blank, and reserving machining allowance for the subsequent machining outline; the rotor carries out linear cutting outline, and leaves the machining allowance for the follow-up processing outline, reduces the processing amount of follow-up processing, reduces the deformation after finish machining.
Processing a first mounting hole and a second mounting hole at two ends of the bar blank by using a precise numerical control lathe; the rotor precision numerical control lathe processes the inner holes and the sealing grooves at two ends, and the high-precision size requirement of the inner holes at two ends is effectively guaranteed. And
and machining a positioning mark hole by using a numerical control machining center, machining the outline of the impeller part by taking the positioning mark hole as a reference, and correcting the coaxiality of the first mounting hole and the second mounting hole. The rotor adopts a numerical control machining center to machine the connecting hole, the two end faces and the outline, so that the requirements on the precision of the outline and the coaxiality of the outline and the rotating center hole are met.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the processing method further includes:
after the coaxiality of the first mounting hole and the second mounting hole is corrected, a plurality of connecting holes are machined in the rotating shaft part by using a numerical control machining center, and a first sealing groove and a second sealing groove are machined in the inner circumferential surface of the first mounting hole.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
the stainless steel bar material is adopted for processing, so that the performance requirement of acid and alkali corrosion resistance of the part is met; the bar blank is subjected to line cutting after the end face is roughly turned, so that the processing amount of subsequent processing is reduced, and the deformation after finish machining is reduced; the high-precision numerical control lathe and the numerical control machining center are adopted for machining, the high-precision size requirements and the relative position requirements of the holes, the connecting holes and the sealing grooves are effectively guaranteed, errors during the assembly of the whole machine are reduced, the assembly efficiency is improved, and the performance of the whole machine is improved.
The technical scheme provided by the invention is explained in more detail in the following with reference to the attached drawings.
Fig. 1 is a front view showing the profile (end No. 1) of the rotor and the internal connection holes (end No. 2), and is mainly processed by a numerical control processing center, and has high requirements on the profile and the position of the three connection holes (end No. 3). Fig. 2 is a right side view (sectional view) showing the structures of the center holes (end marks 5) and the seal grooves (end marks 4) at the two ends of the rotor, which are mainly machined by a numerically controlled lathe.
Selecting an acid-alkali corrosion resistant stainless steel bar material, firstly performing rough end surface turning on the bar material, and establishing a rough reference for subsequent processing; further performing linear cutting on the outline, and reserving machining allowance for the subsequent machining outline, so that the machining amount of subsequent machining is reduced, and the deformation after finish machining is reduced; and then, an inner hole and a sealing groove at two ends are machined by using a precise numerical control lathe, and then a connecting hole, two end faces and an outline are machined by using a numerical control machining center, so that the requirements on the precision of the outline and the coaxiality of the outline and a rotating center hole are met.
Through the technical scheme, the invention has the beneficial effects that:
the stainless steel bar material is adopted for processing, so that the performance requirement of acid and alkali corrosion resistance of the part is met; the bar blank is subjected to line cutting after the end face is roughly turned, so that the processing amount of subsequent processing is reduced, and the deformation after finish machining is reduced; the high-precision numerical control lathe and the numerical control machining center are adopted for machining, the high-precision size requirements and the relative position requirements of the holes, the connecting holes and the sealing grooves are effectively guaranteed, errors during the assembly of the whole machine are reduced, the assembly efficiency is improved, and the performance of the whole machine is improved.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
If the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the description of the invention, the above-described terms are intended to be based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device, mechanism, component, or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A stainless steel rotor for a fluid pump for a food and medicine production apparatus, the stainless steel rotor comprising:
a rotating shaft part;
the impeller part is positioned on the periphery of the rotating shaft part and is provided with three blades which are uniformly distributed along the circumferential direction;
wherein, the rotating shaft part and the impeller part are integrally formed.
2. The stainless steel rotor of claim 1, further comprising:
the first mounting hole is formed in the first end of the rotating shaft; and
the second mounting hole is formed in the second end of the rotating shaft;
the center lines of the first mounting hole and the second mounting hole are coincident with the axis of the rotating shaft part.
3. The stainless steel rotor of claim 1, further comprising:
and the connecting holes are formed in the rotating shaft part and are positioned between the first mounting hole and the second mounting hole along the axial direction of the rotating shaft part.
4. The stainless steel rotor of claim 3, wherein the number of the plurality of connecting holes is three, and in a direction perpendicular to the axis of the rotating shaft, the centers of the three connecting holes are distributed at three vertexes of a first equilateral triangle, the three vertexes of the blades are distributed at three vertexes of a second equilateral triangle, and a high line of the first equilateral triangle coincides with a high line of the second equilateral triangle.
5. The stainless steel rotor of claim 4, further comprising:
and the positioning mark hole is formed in the end face, close to the first mounting hole, of the impeller part and is positioned on a height line of the second equilateral triangle.
6. The stainless steel rotor of claim 4, wherein the first mounting hole and the second mounting hole are machined based on the positioning mark hole so that the coaxiality of the first mounting hole and the second mounting hole does not exceed the coaxiality of the first mounting hole and the second mounting hole
7. The stainless steel rotor of claim 1, further comprising:
the first sealing groove is arranged at the outer edge of the first mounting hole; and
and the second sealing groove is arranged in the first mounting hole, and a set distance is reserved between the second sealing groove and the first sealing groove along the axial direction of the rotating shaft part.
8. A fluid pump comprising the stainless steel rotor according to any one of claims 1 to 7.
9. A method for processing a stainless steel rotor is characterized by comprising the following steps:
selecting an acid and alkali corrosion resistant stainless steel bar blank;
roughly turning two end faces of the bar blank to provide a rough reference for subsequent processing;
performing linear cutting on the outline of the bar blank, and reserving machining allowance for the subsequent machining outline;
processing a first mounting hole and a second mounting hole at two ends of the bar blank by using a precise numerical control lathe; and
and machining a positioning mark hole by using a numerical control machining center, machining the outline of the impeller part by taking the positioning mark hole as a reference, and correcting the coaxiality of the first mounting hole and the second mounting hole.
10. The method of machining a stainless steel rotor of claim 9, further comprising:
after the coaxiality of the first mounting hole and the second mounting hole is corrected, a plurality of connecting holes are machined in the rotating shaft part by using a numerical control machining center, and a first sealing groove and a second sealing groove are machined in the inner circumferential surface of the first mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034018.2A CN110821826A (en) | 2019-10-28 | 2019-10-28 | Stainless steel rotor, fluid pump and machining method of stainless steel rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034018.2A CN110821826A (en) | 2019-10-28 | 2019-10-28 | Stainless steel rotor, fluid pump and machining method of stainless steel rotor |
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| CN110821826A true CN110821826A (en) | 2020-02-21 |
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|---|---|---|---|
| CN201911034018.2A Pending CN110821826A (en) | 2019-10-28 | 2019-10-28 | Stainless steel rotor, fluid pump and machining method of stainless steel rotor |
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| JPH0571475A (en) * | 1991-09-04 | 1993-03-23 | Anlet Co Ltd | Cocoon type two-shaft multistage positive displacement pump to reduce torque fluctuation |
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| CN217712925U (en) * | 2022-06-29 | 2022-11-01 | 浙江力高泵业科技有限公司 | Nonmetal overflowing end anti-corrosion wear-resistant three-vane rotor pump |
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2019
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| CN217712925U (en) * | 2022-06-29 | 2022-11-01 | 浙江力高泵业科技有限公司 | Nonmetal overflowing end anti-corrosion wear-resistant three-vane rotor pump |
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