CN203978849U - A kind of single channel centrifugal pump of runner built-in knife - Google Patents
A kind of single channel centrifugal pump of runner built-in knife Download PDFInfo
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- CN203978849U CN203978849U CN201420288417.8U CN201420288417U CN203978849U CN 203978849 U CN203978849 U CN 203978849U CN 201420288417 U CN201420288417 U CN 201420288417U CN 203978849 U CN203978849 U CN 203978849U
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- Prior art keywords
- pump
- impeller
- pump cover
- runner
- single channel
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Abstract
The single channel centrifugal pump of the built-in cutting blade of a kind of runner, comprise the pump housing, front pump cover, rear pump cover, pump shaft, the pump housing is positioned at equipment upper end, which is provided with outlet, the pump housing is positioned at both sides, pump housing below with front pump cover and rear pump cover and is fixedly connected with the pump housing by clamping bolt, front pump cover middle part is provided with import, pump shaft is fixedly connected with through the Kong Bingyu impeller at rear pump cover middle part, between pump shaft and rear pump cover, seal, pump shaft is supported and can in bearing support, freely be rotated by the bearing support of its periphery, at front pump cover, between rear pump cover, be provided with impeller, on impeller, a side is fixedly connected with pump shaft, impeller and front pump cover sealing, impeller is provided with pipe-like runner near a side of front pump cover, pipe-like runner and outlet are positioned on same circle core shaft, it is characterized in that being provided with blade near the runner inner wall of described import, the utility model compact structure, not needing increases extra cutting device, and axial dimension is little, and its blade structure is conducive to improve mobility status, suppresses to stop up.
Description
Technical field
The invention belongs to centrifugal pump manufacturing technology field, particularly the single channel centrifugal pump of the built-in cutting blade of a kind of runner.
Background technique
Centrifugal pump is in the time carrying the thick slurry of glass yarn, plastic rope, long fibre shape, and the passing capacity of its pump is not strong, generally acknowledge at present can elevator pump at impeller inlet leading portion installation cutting device passing capacity.The known this cutting device part that comes with some shortcomings: the one, increase the power of pump, simultaneously the Effect of Rotation of upstream cutting device the mobility status in downstream impeller and pump case, increase hydraulic loss, then affected the characteristics such as flow, lift and the efficiency of pump; The 2nd, increased pump shaft to size, define the bulk of installation; The 3rd, complex structure, maintenance difficult.Single channel centrifugal pump is widely used because its known passing capacity is good at present, but in the time carrying the thick slurry of long fibre shape, there is too the problem of passing capacity deficiency, if increase extra cutting device but bring too the problems referred to above, the asymmetry of single blade impeller makes impeller internal flow situation extremely complicated simultaneously, the cutting device of impeller inlet front end can affect the dynamic balance performance of single channel centrifugal pump, causes the stability of single channel centrifugal pump to reduce.
Summary of the invention
Technical problem to be solved by this invention is, the preposition cutting device axial dimension of single blade impeller is large, complex structure, poor reliability and the low defect of pump efficiency, a kind of single channel centrifugal pump of runner built-in knife is proposed, this single channel centrifugal pump axial dimension is little, simple in structure, efficiency and operational reliability high.
Technological scheme of the present invention is: the single channel centrifugal pump of the built-in cutting blade of a kind of runner, relates to the manufacture field of centrifugal pump, comprise the pump housing, front pump cover, rear pump cover, pump shaft, the pump housing is positioned at equipment upper end, which is provided with outlet, the pump housing is positioned at both sides, pump housing below with front pump cover and rear pump cover and is fixedly connected with the pump housing by clamping bolt, front pump cover, rear pump cover is fixedly connected with other device or ground by fixing device, front pump cover middle part is provided with import, pump shaft is fixedly connected with through the Kong Bingyu impeller at rear pump cover middle part, between pump shaft and rear pump cover, seal, pump shaft is supported and can in bearing support, freely be rotated by the bearing support of its periphery, bearing support is fixed by fixing device and other device or ground, bearing support is fixedly connected with rear pump cover, at front pump cover, between rear pump cover, be provided with impeller, on impeller, a side is fixedly connected with pump shaft, impeller and front pump cover sealing, impeller is provided with pipe-like runner near a side of front pump cover, pipe-like runner and outlet are positioned on same circle core shaft, it is characterized in that being provided with blade near the runner inner wall of described import.Above-mentioned arrangement can reduce the axial dimension of single channel centrifugal pump, and blade can cut off the long fibre of suction, can prevent the obstruction at impeller inlet place, is easy to carry thereby the thick slurry of glass yarn, plastic rope, long fibre shape is become.
As preferably, the fixed end of described blade adopts welding or cast structure to be fixed on impeller, simple in structure like this, is easy to processing.
As preferably, described blade is circular arc curved shape, and blade starting point is pointed, and described circular arc convex surface is towards import.From described suction side, the sense of rotation of described blade is consistent with wheel rotation direction.Described blade is built in impeller channel, does not have the interference effect between different parts, has improved the operational reliability of pump; The shape of described blade plays certain guide functions, improves the mobility status of impeller inlet, improves the operational efficiency of pump.
As preferably, described pump shaft and rear pump cover seal by mechanical seal.
As preferably, described is provided with bearing between pump shaft and bearing support.
As preferably, on described impeller, to be fixedly connected with pump shaft 7 be to be fixed on pump shaft by key to a side, and be fastenedly connected by impeller nut and pump shaft.
As preferably, between described impeller and front pump cover, be provided with seal ring.
As preferably, the quantity Z of described blade
1it is 3～5.
As preferably, described blade shaft to length be described inlet diameter D
j0.1～0.25 times.
As preferably, described blade height is radially described inlet diameter D
j0.1～0.15 times.
As preferably, the starting point of described blade is 20～40 degree to the angle θ of end.
Be 0～0.5mm as the thickness of preferred described blade starting point, the thickness of described blade end is 2～4mm, and the thickness of described blade evenly increases progressively successively from starting point to end; The cutting edge of described blade does tapered, to increase sharpness.
The invention has the beneficial effects as follows: blade arrangement is in impeller inside, and axial dimension is little; Blade adopts welding or cast structure to be fixed on impeller, simple in structure, is easy to processing; Cutting blade and impeller are made of one, and improve the operational reliability of pump; Blade can cut off the long fibre of suction, prevents the obstruction at impeller inlet place, does not need to increase extra cutting device; The shape of blade has guide functions, improves the mobility status of impeller inlet, improves the operational efficiency of pump.
Brief description of the drawings
Fig. 1 is an embodiment's of single channel centrifugal pump of a kind of runner built-in knife of the present invention structural profile schematic diagram.
Fig. 2 is embodiment's blade wheel structure generalized section.
Fig. 3 is embodiment's impeller blade schematic diagram.
Fig. 4 is embodiment's blade wheel structure left view.
Fig. 5 is embodiment's blade structure schematic diagram.
In figure: 1. the pump housing, 2. outlet, 3. front pump cover, 4. rear pump cover, 5. clamping bolt, 6. outlet, 7. pump shaft, 8. mechanical seal, 9. bearing, 10. bearing support, 11. impellers, 12. keys, 13. impeller nuts, 14. seal rings, 15. runners, 16. blades, 17. front shrouds, 18. back shrouds, 19. blades, 20. starting points, 21. ends, 22. fixed ends, 23. cutting edges.
Embodiment
In conjunction with Fig. 1, the single channel centrifugal pump of the built-in cutting blade of runner of the present invention comprises: the single channel centrifugal pump of the built-in cutting blade of a kind of runner, relates to the manufacture field of centrifugal pump, comprise the pump housing 1, front pump cover 3, rear pump cover 4, pump shaft 7, the pump housing 1 is positioned at equipment upper end, which is provided with outlet 2, the pump housing 1 is positioned at the pump housing 1 both sides, below with front pump cover 3 and rear pump cover 4 and is fixedly connected with the pump housing 1 by clamping bolt 5, front pump cover 3, rear pump cover 4 is fixedly connected with other device or ground by fixing device, front pump cover middle part is provided with import 6, pump shaft 7 is fixedly connected with through the Kong Bingyu impeller 11 at rear pump cover 4 middle parts, sealing between pump shaft 7 and rear pump cover 4, the bearing support 10 of pump shaft 7 by its periphery supports and can freely rotate bearing support 10 is interior, bearing support 10 is fixed by fixing device and other device or ground, bearing support 10 is fixedly connected with rear pump cover 4, at front pump cover 3, between rear pump cover 4, be provided with impeller 11, on impeller 11, a side is fixedly connected with pump shaft 7, impeller 11 seals with front pump cover 3, impeller 11 is provided with pipe-like runner 15 near a side of front pump cover 3, pipe-like runner 15 is positioned on same circle core shaft with outlet 6, it is characterized in that being provided with blade 16 near runner 15 inwalls of described import 6.5, the single channel centrifugal pump of the built-in cutting blade of a kind of runner according to claim 1 and 2, is characterized in that: described pump shaft 7 seals by mechanical seal 8 with rear pump cover 4.
Described is provided with bearing 9 between pump shaft 7 and bearing support 10.
On described impeller 11, to be fixedly connected with pump shaft 7 be to be fixed on pump shaft 7 by key 12 to a side, and be fastenedly connected by impeller nut 13 and pump shaft 7.
Between described impeller 11 and front pump cover 3, be provided with seal ring 14.
In conjunction with Fig. 2, Fig. 3, embodiment's impeller 11 only has the blade 19 of a spatial warping, described blade 19 is at runner 15 of the interior formation of impeller 11, and blade 16 is positioned at the front end of described runner 15, and described blade 16 is fixed on the inwall of front shroud 17 of impeller 11 by welding or cast structure; Described blade 16 is circular arc curved shape, and the starting point 20 of blade 16 is pointed, and described circular arc convex surface is towards import 6.
In conjunction with Fig. 4, the quantity of blade 16 is 4, and described blade 16 sense of rotation are consistent with impeller 11 sense of rotation.
In conjunction with Fig. 5, the thickness of blade 16 evenly increases progressively successively from starting point 20 to end 21, and the cutting edge 23 of described blade 16 does tapered, to increase sharpness.
Working procedure is as follows:
In the time that single channel centrifugal pump is worked, pump shaft 7 rotates impeller 11 and blade 16 synchronous rotaries, the thick slurry that contains long fibre shape enters impeller 11 by import 6, long fibre is shredded by blade 16 in the import of impeller 11, import in the pump housing 1 by the centrifugal action of impeller 11, finally by outlet 2, the long fibre of chopping is discharged.
Claims (10)
1. the single channel centrifugal pump of a runner built-in knife, comprise the pump housing (1), front pump cover (3), rear pump cover (4), pump shaft (7), the pump housing (1) is positioned at equipment upper end, which is provided with outlet (2), the pump housing (1) is positioned at both sides, the pump housing (1) below with front pump cover (3) and rear pump cover (4) and is fixedly connected with the pump housing (1) by clamping bolt (5), front pump cover (3), rear pump cover (4) is fixedly connected with other device or ground by fixing device, front pump cover middle part is provided with import (6), pump shaft (7) is fixedly connected with through the Kong Bingyu impeller (11) at rear pump cover (4) middle part, sealing between pump shaft (7) and rear pump cover (4), pump shaft (7) is supported and can in bearing support (10), freely be rotated by the bearing support (10) of its periphery, bearing support (10) is fixed by fixing device and other device or ground, bearing support (10) is fixedly connected with rear pump cover (4), in front pump cover (3), between rear pump cover (4), be provided with impeller (11), the upper side of impeller (11) is fixedly connected with pump shaft (7), impeller (11) and front pump cover (3) sealing, impeller (11) is provided with pipe-like runner (15) near a side of front pump cover (3), pipe-like runner (15) is positioned on same circle core shaft with outlet (6), it is characterized in that being provided with blade (16) near runner (15) inwall of described import (6).
2. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1, is characterized in that: the fixed end (22) of described blade (16) adopts welding or cast structure to be fixed on impeller (11).
3. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1 and 2, it is characterized in that: described blade (16) is circular arc curved shape, the starting point (20) of blade (16) is pointed, and described circular arc convex surface is towards import (6); From described import (6) side, described blade (16) sense of rotation is consistent with impeller (11) sense of rotation.
4. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1, is characterized in that: the quantity Z of described blade (16)
1it is 3～5.
5. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1 and 2, is characterized in that: described pump shaft (7) seals by mechanical seal (8) with rear pump cover (4).
6. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1 and 2, is characterized in that: described is provided with bearing (9) between pump shaft (7) and bearing support (10).
7. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1 and 2, it is characterized in that: it is to be fixed on pump shaft (7) above by key (12) that the described upper side of impeller (11) is fixedly connected with pump shaft (7), and is fastenedly connected by impeller nut (13) and pump shaft (7).
8. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1 and 2, is characterized in that: between described impeller (11) and front pump cover (3), be provided with seal ring (14).
9. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1, is characterized in that: the axial length of described blade (16) is described import (6) diameter D
j0.1～0.25 times; Described blade (16) height is radially described import (6) diameter D
j0.1～0.15 times; The starting point (20) of described blade (16) is 20～40 degree to the angle θ of end (21).
10. the single channel centrifugal pump of a kind of runner built-in knife according to claim 1, it is characterized in that: the thickness of the starting point (20) of described blade (16) is 0～0.5mm, the thickness of the end (21) of described blade (16) is 2～4mm, and the thickness of described blade (16) evenly increases progressively successively from starting point to end; The cutting edge (23) of described blade (16) is taper, to increase sharpness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288417.8U CN203978849U (en) | 2014-05-30 | 2014-05-30 | A kind of single channel centrifugal pump of runner built-in knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288417.8U CN203978849U (en) | 2014-05-30 | 2014-05-30 | A kind of single channel centrifugal pump of runner built-in knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978849U true CN203978849U (en) | 2014-12-03 |
Family
ID=51976301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420288417.8U Expired - Fee Related CN203978849U (en) | 2014-05-30 | 2014-05-30 | A kind of single channel centrifugal pump of runner built-in knife |
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| Country | Link |
|---|---|
| CN (1) | CN203978849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
-
2014
- 2014-05-30 CN CN201420288417.8U patent/CN203978849U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104005962B (en) * | 2014-05-30 | 2017-02-01 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170530 |