CN114876859A - Industrial fluid conveying device - Google Patents

Industrial fluid conveying device Download PDF

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Publication number
CN114876859A
CN114876859A CN202210560936.4A CN202210560936A CN114876859A CN 114876859 A CN114876859 A CN 114876859A CN 202210560936 A CN202210560936 A CN 202210560936A CN 114876859 A CN114876859 A CN 114876859A
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CN
China
Prior art keywords
auxiliary
blades
branch
industrial fluid
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210560936.4A
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Chinese (zh)
Inventor
朱洁莲
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210560936.4A priority Critical patent/CN114876859A/en
Publication of CN114876859A publication Critical patent/CN114876859A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses an industrial fluid conveying device, which is a centrifugal pump device and comprises an impeller and a volute, wherein the impeller comprises a rear disc (1), a front disc (2), main blades (3) and auxiliary blades, and the auxiliary blades are arranged on one side surface of the front disc, which is far away from the main blades, and the industrial fluid conveying device is characterized in that: the auxiliary blades comprise a plurality of first auxiliary blades (4) and a plurality of second auxiliary blades (5), and the first auxiliary blades and the second auxiliary blades are arranged at intervals in a staggered mode along the circumferential direction; the first auxiliary blade (4) comprises a first main body part (6), a first branch part (7) and a second branch part (8), and the radial inner ends of the first branch part and the second branch part are connected with the radial outer end of the first main body part; the second auxiliary blade (5) comprises a second main body part (10), and the front end of the second main body part is provided with a flow guide arc part (11). The centrifugal pump device can reduce liquid backflow outside the front disc, balance the stress on the side of the front disc and balance the axial force, and therefore the running stability of the centrifugal pump is improved.

Description

Industrial fluid conveying device
Technical Field
The invention relates to the technical field of industrial fluid conveying devices and liquid conveying machinery, in particular to an industrial fluid conveying device.
Background
The liquid conveying usually adopts a centrifugal pump as a power device, the existing centrifugal pump comprises an impeller and a volute, the impeller is arranged in the volute and comprises a rear disc, a front disc, main blades and auxiliary blades, and the auxiliary blades are arranged on the outer side of the front disc. The auxiliary vane structure of existing centrifugal pumps is typically a simple straight vane or a curved arc vane. However, the existing centrifugal pump has the problems of large backflow and axial force play at the outer side of the front disc.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an industrial fluid conveying device, which can reduce liquid backflow outside a front disc through the design of an auxiliary blade structure, balance the stress on the side of the front disc and balance the axial force, thereby improving the operation stability of a centrifugal pump.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an industrial fluid conveying device, its is the centrifugal pump, and it includes impeller, spiral case, and the impeller sets up in the spiral case, and the impeller includes back plate (1), front bezel (2), main blade (3), assists the blade, and a plurality of main blades are connected between back plate, front bezel, and the front bezel has the water inlet, and a side of keeping away from main blade of front bezel is provided with assists the blade, its characterized in that: the auxiliary blades comprise a plurality of first auxiliary blades (4) and a plurality of second auxiliary blades (5), and the first auxiliary blades and the second auxiliary blades are arranged in a staggered mode at intervals along the circumferential direction.
Furthermore, in the circumferential direction, the plurality of first auxiliary blades (4), the plurality of second auxiliary blades (5) and the plurality of main blades (3) are arranged in a staggered mode at intervals in sequence.
Further, the first auxiliary blade (4) comprises a first main body part (6), a first branch part (7) and a second branch part (8), and the radial inner ends of the first branch part and the second branch part are connected with the radial outer end of the first main body part; the second auxiliary blade (5) comprises a second main body part (10), and the front end of the second main body part is provided with a flow guide arc part (11).
Further, the radial lengths of the first auxiliary blade (4) and the second auxiliary blade (5) are different, and the radial length of the second auxiliary blade is equal to 0.7-1.3 times of the radial length of the first branch portion.
Further, the outer diameter of the second auxiliary blade (5) is equal to the outer diameter of the first auxiliary blade or the first branch portion.
Further, the first main body portion (6) extends in the radial direction, and the first branch portion (7) is curved/inclined to the opposite side of the rotational direction (R), and the first branch portion is an arc-shaped portion.
Further, the radial length of the first branch part (7) is 30-70% of the radial length of the first auxiliary blade; the radial inner end of the second branch portion (8) has a gentle transition section (9) which is curved/inclined to the opposite side of the rotation direction (R), and the second branch portion is an arc-shaped portion.
Further, the second main body part (10) is bent/inclined to the opposite side of the rotation direction (R), the second main body part is an arc-shaped part, and the outer contour of the flow guide arc part (11) is a part of an ellipse.
Furthermore, a communication hole (12) is formed in the second branch portion (8), and the communication hole (12) is used for communicating fluid spaces on two sides of the second branch portion (8) in the circumferential direction.
Compared with the simple auxiliary blade structure (straight blades or curved arc blades) of the existing centrifugal pump, the centrifugal pump device can obviously reduce the liquid backflow outside the front disc and balance the stress on the side of the front disc so as to balance the axial force, thereby improving the operation stability and durability of the centrifugal pump.
Drawings
FIG. 1 is a schematic structural view (front view) of a centrifugal pump according to the present invention;
FIG. 2 is a schematic structural view (side view) of a centrifugal pump of the present invention;
FIG. 3 is a schematic view of the centrifugal pump of the present invention;
fig. 4 is a schematic structural diagram of the centrifugal pump of the present invention.
In the figure: the fan comprises a rear disc 1, a front disc 2, a main blade 3, a first auxiliary blade 4, a second auxiliary blade 5, a first main body part 6, a first branch part 7, a second branch part 8, a straight transition section 9, a second main body part 10, a flow guide arc part 11 and a communication hole 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, an industrial fluid conveying device includes an impeller and a volute, the impeller is disposed in the volute, the impeller includes a back disk 1, a front disk 2, main blades 3, and auxiliary blades, the main blades 3 are connected between the back disk 1 and the front disk 2, the front disk 2 has a water inlet, and one side of the front disk 2 away from the main blades 3 is provided with the auxiliary blades; the auxiliary blades comprise a plurality of first auxiliary blades 4 and a plurality of second auxiliary blades 5, and the plurality of first auxiliary blades 4 and the plurality of second auxiliary blades 5 are arranged in a staggered mode at intervals along the circumferential direction.
In the circumferential direction, the plurality of first auxiliary blades 4, the plurality of second auxiliary blades 5, and the plurality of main blades 3 are arranged alternately in sequence.
As shown in fig. 2 to 3, the first auxiliary vane 4 includes a first main body portion 6, a first branch portion 7, and a second branch portion 8, and the radially inner ends of the first branch portion 7 and the second branch portion 8 are connected to the radially outer end of the first main body portion 6; the second auxiliary blade 5 includes a second main body portion 10, and a guide arc portion 11 is provided at a front end of the second main body portion 10. The radial lengths of the first auxiliary blade 4 and the second auxiliary blade 5 are different, further, the radial length of the second auxiliary blade 5 is equal to 0.8-1.2 times of the radial length of the first branch portion 7, and the outer diameter of the second auxiliary blade 5 is equal to the outer diameter of the first auxiliary blade 4/the first branch portion 7.
The design of this supplementary blade structure can reduce the liquid backward flow in the front bezel outside, thereby balanced front bezel side atress balanced axial force to improve centrifugal pump operating stability.
The first main body part 6 extends along the radial direction, the first branch part 7 bends/inclines towards the opposite side of the rotation direction R, the first branch part 7 is an arc-shaped part, and the radial length of the first branch part 7 is 40-60% of the radial length of the first auxiliary blade 4; the radially inner end of the second branch portion 8 has a straight/gentle transition section 9, the second branch portion 8 is curved/inclined to the opposite side of the rotation direction R, and the second branch portion 8 is an arc-shaped portion. The second body portion 10 is curved/inclined to the opposite side of the rotation direction R, the second body portion 10 is an arc-shaped portion, and the outer contour of the air guide arc portion 11 is a part of an ellipse. Through the structural design of the first auxiliary blade and the second auxiliary blade, the liquid backflow outside the front disc can be further reduced, and therefore the axial force is balanced by the stress on the side of the front disc, and the running stability of the centrifugal pump is improved.
As shown in fig. 4, the second branch portion 8 is further provided with a communication hole 12, and the communication hole 12 is used for communicating fluid spaces on both sides of the second branch portion 8 in the circumferential direction, so that the pressure distribution on the front disk side is further adjusted, and the axial force can be balanced.
Compared with the simple auxiliary blade structure (straight blades or curved arc blades) of the existing centrifugal pump, the centrifugal pump device can obviously reduce the liquid backflow outside the front disc and balance the stress on the side of the front disc so as to balance the axial force, thereby improving the operation stability and durability of the centrifugal pump.
The industrial fluid conveying device can reduce liquid backflow outside the front disc through the design of the auxiliary blade structure, balance the stress on the side of the front disc and balance the axial force, and therefore the operation stability of the centrifugal pump is improved.
The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides an industrial fluid conveying device, its is centrifugal pump device, and it includes impeller, spiral case, and the impeller sets up in the spiral case, and the impeller includes back plate (1), front bezel (2), main blade (3), assists the blade, and a plurality of main blades are connected between back plate, front bezel, and the front bezel has the water inlet, and a side of keeping away from main blade of front bezel is provided with assists the blade, its characterized in that: the auxiliary blades comprise a plurality of first auxiliary blades (4) and a plurality of second auxiliary blades (5), and the first auxiliary blades and the second auxiliary blades are arranged in a staggered mode at intervals along the circumferential direction.
2. An industrial fluid transfer device according to claim 1, wherein the plurality of first auxiliary vanes (4), the plurality of second auxiliary vanes (5), and the plurality of main vanes (3) are alternately arranged in sequence in the circumferential direction.
3. An industrial fluid conveying device according to claim 2, wherein the first auxiliary vane (4) comprises a first main body part (6), a first branch part (7) and a second branch part (8), and the radial inner ends of the first branch part and the second branch part are connected with the radial outer end of the first main body part; the second auxiliary blade (5) comprises a second main body part (10), and the front end of the second main body part is provided with a flow guide arc part (11).
4. An industrial fluid transfer device according to claim 3, wherein the first and second auxiliary vanes (4, 5) have different radial lengths, and the second auxiliary vane has a radial length equal to 0.7 to 1.3 times the radial length of the first branch portion.
5. An industrial fluid transfer device, according to claim 4, wherein the second auxiliary vane (5) has an outer diameter equal to the outer diameter of the first auxiliary vane or the first branch.
6. An industrial fluid transfer device according to claim 5, wherein the first main body portion (6) extends in a radial direction, and the first branch portion (7) is curved/inclined to the opposite side of the rotational direction (R), the first branch portion being an arc-shaped portion.
7. An industrial fluid transfer device, according to claim 6, wherein the radial length of said first branch portion (7) is 30-70% of the radial length of the first auxiliary vane; the radial inner end of the second branch portion (8) has a gentle transition section (9) which is curved/inclined to the opposite side of the rotation direction (R), and the second branch portion is an arc-shaped portion.
8. An industrial fluid transfer device according to claim 7, wherein the second body portion (10) is curved/inclined to the opposite side of the direction of rotation (R), the second body portion is an arc-shaped portion, and the outer contour of the arc-shaped flow guide portion (11) is a part of an ellipse.
9. An industrial fluid transfer device according to claim 8, wherein the second branch portion (8) is provided with a communication hole (12), and the communication hole (12) is used for communicating the fluid spaces at both sides of the second branch portion (8) in the circumferential direction.
CN202210560936.4A 2022-05-23 2022-05-23 Industrial fluid conveying device Withdrawn CN114876859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210560936.4A CN114876859A (en) 2022-05-23 2022-05-23 Industrial fluid conveying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210560936.4A CN114876859A (en) 2022-05-23 2022-05-23 Industrial fluid conveying device

Publications (1)

Publication Number Publication Date
CN114876859A true CN114876859A (en) 2022-08-09

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CN202210560936.4A Withdrawn CN114876859A (en) 2022-05-23 2022-05-23 Industrial fluid conveying device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116335949A (en) * 2023-04-28 2023-06-27 江苏大学流体机械温岭研究院 Pump station for irrigation system and feed pump or fertilization pump thereof
CN117366010A (en) * 2023-10-17 2024-01-09 浙江山江水务科技有限公司 Ice-containing medium cleaning system and conveying pump thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116335949A (en) * 2023-04-28 2023-06-27 江苏大学流体机械温岭研究院 Pump station for irrigation system and feed pump or fertilization pump thereof
CN116335949B (en) * 2023-04-28 2024-03-08 江苏大学流体机械温岭研究院 Pump station for irrigation system and feed pump or fertilization pump thereof
CN117366010A (en) * 2023-10-17 2024-01-09 浙江山江水务科技有限公司 Ice-containing medium cleaning system and conveying pump thereof

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Application publication date: 20220809