CN111946660A - Impeller structure of centrifugal pump - Google Patents
Impeller structure of centrifugal pump Download PDFInfo
- Publication number
- CN111946660A CN111946660A CN202010863549.9A CN202010863549A CN111946660A CN 111946660 A CN111946660 A CN 111946660A CN 202010863549 A CN202010863549 A CN 202010863549A CN 111946660 A CN111946660 A CN 111946660A
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- CN
- China
- Prior art keywords
- guide pipe
- turntable
- blade
- centrifugal pump
- positioning sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
Abstract
The invention discloses an impeller structure of a centrifugal pump, which comprises a rear rotary table, a plurality of arc-shaped blades and a front rotary table, wherein a water inlet is formed in the center of the front rotary table, a flow guide pipe communicated with the water inlet is formed on the front end surface of the front rotary table, inclined grooves penetrating through the front end of the flow guide pipe are formed on the opposite inner walls of the two sides of the front end of the flow guide pipe, the front end of the flow guide pipe is inserted into an inclined blade, and the two ends of the blade are inserted into the inclined grooves of the flow guide; the guide pipe on the plug bush locating sleeve, the front end shaping of locating sleeve has annular retaining ring, the retaining ring covers the chute of guide pipe and supports and leans on the preceding terminal surface of guide pipe, the retaining ring interpolation of locating sleeve is equipped with the fixed support of "ten" font relative with the blade, the outer end welded fastening of fixed support is on the inner wall of locating sleeve retaining ring.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to an impeller structure of a centrifugal pump.
Background
The pump product is one of important general mechanical products in various fields of national economy, and the centrifugal pump is widely applied by the characteristics of high efficiency and large flow. The core structure of a centrifugal pump is the combination of an impeller and a liquid guide cover, and the efficiency and the performance of the pump are greatly determined as a hydrodynamic transmission device. The centrifugal pump firstly discharges gas by self-absorption when working, the pump body is full of water and can enter a normal working state, the traditional centrifugal pump impeller is in a flat cake shape, a water inlet is arranged at the center of the impeller, blades distributed spirally are arranged in the impeller, adjacent blades are provided with flow channels which are enlarged from the center of the impeller to the outer side of the impeller, the inlet of the flow channel close to the center of the impeller is smaller, when the centrifugal pump works, sundries such as aquatic weeds and the like can be sucked into the impeller of the centrifugal pump from the water inlet sometimes, and the aquatic weeds and the like easily cause the blockage of the inlet of the flow channel in the impeller.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an impeller structure of a centrifugal pump, wherein a set bracket is additionally arranged at a water inlet of an impeller, and is an impeller cutting blade, and the fixed bracket fixed by the rotation matching of the impeller can cut aquatic weeds flowing into the centrifugal pump, so that the blockage of the centrifugal pump is avoided.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an impeller structure of a centrifugal pump comprises a rear turntable, a plurality of arc-shaped blades and a front turntable, wherein the blades are welded and fixed between the rear turntable and the front turntable and spirally distributed around the central axis of the rear turntable; a water inlet is formed in the center of the front rotary disc, a flow guide pipe communicated with the water inlet is formed on the front end face of the front rotary disc, inclined grooves penetrating through the front end of the flow guide pipe are formed on the opposite inner walls of the two sides of the front end of the flow guide pipe, the front end of the flow guide pipe is inserted in the inclined blades, and the two ends of each blade are inserted in the inclined grooves of the flow guide pipe; the guide pipe is inserted and sleeved with a positioning sleeve, the front end of the positioning sleeve is formed with an annular check ring, the check ring covers the chute of the guide pipe and abuts against the front end surface of the guide pipe, a cross-shaped fixed support opposite to the blade is inserted into the check ring of the positioning sleeve, and the outer end of the fixed support is welded and fixed on the inner wall of the check ring of the positioning sleeve;
a limiting lug is formed on two opposite side walls of the positioning sleeve, a threaded hole is formed in the limiting lug, and a jackscrew is screwed in the threaded hole; an annular limiting groove is formed in the outer wall of the flow guide pipe, and the tail end of the jackscrew is inserted into the limiting groove of the flow guide pipe.
Preferably, the blade edge part of the blade is positioned at the front side of the blade, a gap is arranged between the blade and the fixed support, and a chamfer is formed on the edge at the rear side of the fixed support.
Preferably, the width of the blade is smaller than the depth of the chute on the flow guide pipe, an annular groove communicated with the chute is formed on the front end face of the flow guide pipe, a convex ring is formed on the rear end face of the retainer ring on the positioning sleeve, and the convex ring is inserted into the annular groove of the flow guide pipe and pressed on the blade.
Preferably, the diameter of the inner wall of the positioning sleeve is equal to that of the outer wall of the guide pipe, a ball is embedded at the tail end of the jackscrew, and the ball abuts against the bottom surface of the limiting groove.
Preferably, the diameter of the rear turntable is equal to that of the front turntable, and the thickness of the rear turntable is equal to that of the front turntable.
Preferably, a conical connecting shaft is formed in the center of the rear end face of the rear turntable, a shaft hole is formed in the rear end face of the connecting shaft, and a key groove is formed in the inner wall of the shaft hole.
Preferably, a conical counter bore penetrating through the front end face of the rear turntable is formed at the front end of the connecting shaft, a spherical flow guide block is formed on the bottom surface of the counter bore, and a transition arc is formed between the outer ring of the flow guide block and the inner wall of the counter bore.
Preferably, the central axis of the counter bore coincides with the central axis of the rear rotary table, and the diameter of the open end of the counter bore is equal to the aperture of the water inlet on the front rotary table.
The invention has the beneficial effects that: the impeller that its adopted increases at the water inlet and sets for the support to for impeller cutting blade, utilize fixed support of impeller normal running fit can realize cutting up the pasture and water etc. that flow in the centrifugal pump, avoid the jam of centrifugal pump.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a side view of the present invention;
fig. 5 is a schematic sectional view at B-B in fig. 4.
In the figure: 1. a rear turntable; 11. a connecting shaft; 12. a counter bore; 13. a flow guide block; 14. a shaft hole; 2. a blade; 12. mounting holes; 3. a front turntable; 31. a water inlet; 32. a flow guide pipe; 33. a chute; 34. an annular groove; 35. a limiting groove; 4. a blade; 5. a positioning sleeve; 51. a limiting bump; 52. a threaded hole; 53. a convex ring; 6. carrying out top thread; 7. and (5) fixing the bracket.
Detailed Description
Example (b): as shown in fig. 1 to 5, an impeller structure of a centrifugal pump comprises a rear turntable 1, a plurality of arc-shaped blades 2 and a front turntable 3, wherein the blades 2 are welded and fixed between the rear turntable 1 and the front turntable 3 and spirally distributed around the central axis of the rear turntable 1; a water inlet 31 is formed in the center of the front rotary disc 3, a flow guide pipe 32 communicated with the water inlet 31 is formed on the front end face of the front rotary disc 3, inclined grooves 33 penetrating through the front end of the flow guide pipe 32 are formed on the opposite inner walls of the two sides of the front end of the flow guide pipe 32, the front end of the flow guide pipe 32 is inserted in the inclined blades 4, and the two ends of each blade 4 are inserted in the inclined grooves 33 of the flow guide pipe 32; the guide pipe 32 is inserted and sleeved with the positioning sleeve 5, the front end of the positioning sleeve 5 is formed with an annular check ring, the check ring covers the chute 33 of the guide pipe 32 and abuts against the front end surface of the guide pipe 32, a cross-shaped fixed support 7 opposite to the blade 4 is inserted into the check ring of the positioning sleeve 5, and the outer end of the fixed support 7 is welded and fixed on the inner wall of the check ring of the positioning sleeve 5;
limiting lugs 51 are formed on two opposite side walls of the positioning sleeve 5, threaded holes 52 are formed in the limiting lugs 51, and jackscrews 6 are screwed in the threaded holes 52; an annular limiting groove 35 is formed in the outer wall of the draft tube 32, and the tail end of the jackscrew 6 is inserted into the limiting groove 35 of the draft tube 32.
The blade part of the blade 4 is positioned at the front side of the blade 4, a gap is arranged between the blade 4 and the fixed support 7, and a chamfer is formed on the edge at the rear side of the fixed support 7.
The width of the blade 4 is smaller than the depth of the chute 33 on the draft tube 32, an annular groove 34 communicated with the chute 33 is formed on the front end surface of the draft tube 32, a convex ring 53 is formed on the rear end surface of the retainer ring on the positioning sleeve 5, and the convex ring 53 is inserted into the annular groove 34 of the draft tube 32 and pressed on the blade 4.
The diameter of the inner wall of the positioning sleeve 5 is equal to that of the outer wall of the guide pipe 32, a ball is embedded at the tail end of the jackscrew 6, and the ball abuts against the bottom surface of the limiting groove 35.
The diameter of the rear turntable 1 is equal to that of the front turntable 3, and the thickness of the rear turntable 1 is equal to that of the front turntable 3.
The center of the rear end face of the rear turntable 1 is provided with a conical connecting shaft 11, the rear end face of the connecting shaft 11 is provided with a shaft hole 14, and the inner wall of the shaft hole 14 is provided with a key groove.
A conical counter bore 12 penetrating through the front end face of the rear rotary table 1 is formed at the front end of the connecting shaft 11, a spherical flow guide block 13 is formed on the bottom face of the counter bore 12, and a transition arc is formed between the outer ring of the flow guide block 13 and the inner wall of the counter bore 12.
The central axis of the counter bore 12 coincides with the central axis of the rear rotary disc 1, and the diameter of the opening end of the counter bore 12 is equal to the aperture of the water inlet 31 on the front rotary disc 3.
The working principle is as follows: the invention relates to an impeller structure of a centrifugal pump, which adopts the technical point that a positioning sleeve 5 capable of being positioned and fixed is additionally arranged for an impeller, limiting convex blocks 52 are arranged on two sides of the positioning sleeve 5, the limiting convex blocks 52 can be inserted into corresponding positioning grooves of a pump body, and when the impeller rotates, the positioning sleeves 5 are different, so that blades 4 arranged on the impeller work in a matching way with a fixed support 7 fixed on the positioning sleeve 5, the fixed support 7 can hang aquatic weeds, the rotating blades 4 can cut the aquatic weeds, and the cut aquatic weeds cannot wind around the inlet ends of blades 2, thereby avoiding the blockage of the centrifugal pump.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (8)
1. An impeller structure of a centrifugal pump comprises a rear turntable (1), a plurality of arc-shaped blades (2) and a front turntable (3), wherein the blades (2) are welded and fixed between the rear turntable (1) and the front turntable (3) and spirally distributed around the central axis of the rear turntable (1); the method is characterized in that: a water inlet (31) is formed in the center of the front rotary disc (3), a guide pipe (32) communicated with the water inlet (31) is formed on the front end face of the front rotary disc (3), inclined grooves (33) penetrating through the front end of the guide pipe (32) are formed on the opposite inner walls of the two sides of the front end of the guide pipe (32), the front end of the guide pipe (32) is inserted into the inclined blades (4), and the two ends of each blade (4) are inserted into the inclined grooves (33) of the guide pipe (32); the guide pipe (32) is sleeved with the positioning sleeve (5) in an inserting manner, the front end of the positioning sleeve (5) is formed with an annular check ring, the check ring covers a chute (33) of the guide pipe (32) and abuts against the front end surface of the guide pipe (32), a cross-shaped fixed support (7) opposite to the blade (4) is inserted into the check ring of the positioning sleeve (5), and the outer end of the fixed support (7) is welded and fixed on the inner wall of the check ring of the positioning sleeve (5);
limiting lugs (51) are formed on two opposite side walls of the positioning sleeve (5), threaded holes (52) are formed in the limiting lugs (51), and jackscrews (6) are screwed in the threaded holes (52); an annular limiting groove (35) is formed in the outer wall of the draft tube (32), and the tail end of the jackscrew (6) is inserted into the limiting groove (35) of the draft tube (32).
2. An impeller structure of a centrifugal pump according to claim 1, wherein: the edge of the blade (4) is positioned at the front side of the blade (4), a gap is arranged between the blade (4) and the fixed support (7), and a chamfer is formed on the edge at the rear side of the fixed support (7).
3. An impeller structure of a centrifugal pump according to claim 2, wherein: the width of the blade (4) is smaller than the depth of the chute (33) on the draft tube (32), an annular groove (34) communicated with the chute (33) is formed on the front end face of the draft tube (32), a convex ring (53) is formed on the rear end face of the retainer ring on the positioning sleeve (5), and the convex ring (53) is inserted into the annular groove (34) of the draft tube (32) and is pressed against the blade (4).
4. An impeller structure of a centrifugal pump according to claim 1, wherein: the diameter of the inner wall of the positioning sleeve (5) is equal to that of the outer wall of the guide pipe (32), the tail end of the jackscrew (6) is embedded with a ball, and the ball abuts against the bottom surface of the limiting groove (35).
5. An impeller structure of a centrifugal pump according to claim 1, wherein: the diameter of the rear turntable (1) is equal to that of the front turntable (3), and the thickness of the rear turntable (1) is equal to that of the front turntable (3).
6. An impeller structure of a centrifugal pump according to claim 1, wherein: the center of the rear end face of the rear turntable (1) is provided with a conical connecting shaft (11), the rear end face of the connecting shaft (11) is provided with a shaft hole (14), and the inner wall of the shaft hole (14) is provided with a key groove.
7. An impeller structure of a centrifugal pump according to claim 6, wherein: the front end of the connecting shaft (11) is provided with a conical counter bore (12) which penetrates through the front end face of the rear turntable (1), the bottom surface of the counter bore (12) is provided with a spherical flow guide block (13), and a transition circular arc is formed between the outer ring of the flow guide block (13) and the inner wall of the counter bore (12).
8. An impeller structure of a centrifugal pump according to claim 7, wherein: the central axis of the counter bore (12) coincides with the central axis of the rear turntable (1), and the diameter of the opening end of the counter bore (12) is equal to the aperture of the water inlet (31) on the front turntable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863549.9A CN111946660A (en) | 2020-08-25 | 2020-08-25 | Impeller structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863549.9A CN111946660A (en) | 2020-08-25 | 2020-08-25 | Impeller structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111946660A true CN111946660A (en) | 2020-11-17 |
Family
ID=73367646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863549.9A Withdrawn CN111946660A (en) | 2020-08-25 | 2020-08-25 | Impeller structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111946660A (en) |
Citations (15)
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| CN2672326Y (en) * | 2003-12-30 | 2005-01-19 | 南京蓝深制泵集团股份有限公司 | Double reamer cutting pump |
| CN2735052Y (en) * | 2004-09-08 | 2005-10-19 | 上海中航泵业制造有限公司 | Chopping dredge pump |
| CN201696308U (en) * | 2010-06-17 | 2011-01-05 | 上海汇业机械科技有限公司 | Diving sewage pump with cutting tools |
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| CN202266451U (en) * | 2011-10-17 | 2012-06-06 | 浙江奇峰泵业有限公司 | Sewage dirt submerged electric pump with cutting device |
| CN203230592U (en) * | 2013-04-26 | 2013-10-09 | 上海山楠泵业(集团)有限公司 | Cutting submerged pump |
| CN103821763A (en) * | 2014-02-21 | 2014-05-28 | 重庆岷龙机械制造有限公司 | Methane tank residue liquid blow-down pump head |
| CN103899565A (en) * | 2012-12-28 | 2014-07-02 | 上海连成（集团）有限公司 | Cutting type submersible axial-flow pump |
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104481917A (en) * | 2014-09-03 | 2015-04-01 | 江苏大学 | Semi-open type self-cutting blocking-free pump impeller for shearing structure |
| CN107588034A (en) * | 2017-09-27 | 2018-01-16 | 湖州南丰机械制造有限公司 | A kind of cutter device of sewage pump |
| CN107975479A (en) * | 2017-12-04 | 2018-05-01 | 江苏凯泉泵业制造有限公司 | Dredge pump with cutting is without stifled water inlet pipe |
| CN209067492U (en) * | 2018-09-18 | 2019-07-05 | 重庆岷龙机械制造有限公司 | Biogas slurry and biogas residue pumping and discharging pumps pump head structure |
| CN209704926U (en) * | 2019-03-23 | 2019-11-29 | 长沙天鹏泵业制造有限公司 | A kind of multistage centrifugal pump wheel |
-
2020
- 2020-08-25 CN CN202010863549.9A patent/CN111946660A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672326Y (en) * | 2003-12-30 | 2005-01-19 | 南京蓝深制泵集团股份有限公司 | Double reamer cutting pump |
| CN2735052Y (en) * | 2004-09-08 | 2005-10-19 | 上海中航泵业制造有限公司 | Chopping dredge pump |
| CN102042236A (en) * | 2009-10-14 | 2011-05-04 | 苏道忠 | Sewage pump capable of automatically crushing high viscosity solid medium |
| CN201696308U (en) * | 2010-06-17 | 2011-01-05 | 上海汇业机械科技有限公司 | Diving sewage pump with cutting tools |
| CN202266451U (en) * | 2011-10-17 | 2012-06-06 | 浙江奇峰泵业有限公司 | Sewage dirt submerged electric pump with cutting device |
| CN102434481A (en) * | 2011-11-18 | 2012-05-02 | 江苏国泉泵业制造有限公司 | Crushing pump utilizing streamlined cutter heads |
| CN103899565A (en) * | 2012-12-28 | 2014-07-02 | 上海连成（集团）有限公司 | Cutting type submersible axial-flow pump |
| CN203230592U (en) * | 2013-04-26 | 2013-10-09 | 上海山楠泵业(集团)有限公司 | Cutting submerged pump |
| CN103821763A (en) * | 2014-02-21 | 2014-05-28 | 重庆岷龙机械制造有限公司 | Methane tank residue liquid blow-down pump head |
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104481917A (en) * | 2014-09-03 | 2015-04-01 | 江苏大学 | Semi-open type self-cutting blocking-free pump impeller for shearing structure |
| CN107588034A (en) * | 2017-09-27 | 2018-01-16 | 湖州南丰机械制造有限公司 | A kind of cutter device of sewage pump |
| CN107975479A (en) * | 2017-12-04 | 2018-05-01 | 江苏凯泉泵业制造有限公司 | Dredge pump with cutting is without stifled water inlet pipe |
| CN209067492U (en) * | 2018-09-18 | 2019-07-05 | 重庆岷龙机械制造有限公司 | Biogas slurry and biogas residue pumping and discharging pumps pump head structure |
| CN209704926U (en) * | 2019-03-23 | 2019-11-29 | 长沙天鹏泵业制造有限公司 | A kind of multistage centrifugal pump wheel |
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Application publication date: 20201117 |
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| WW01 | Invention patent application withdrawn after publication |