CN205277905U - Inducer and have self priming pump of this inducer - Google Patents
Inducer and have self priming pump of this inducer Download PDFInfo
- Publication number
- CN205277905U CN205277905U CN201521107254.XU CN201521107254U CN205277905U CN 205277905 U CN205277905 U CN 205277905U CN 201521107254 U CN201521107254 U CN 201521107254U CN 205277905 U CN205277905 U CN 205277905U
- Authority
- CN
- China
- Prior art keywords
- inducer
- blade
- impeller
- pump
- angle
- 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.)
- Active
Links
- 239000000411 inducer Substances 0.000 title claims abstract description 43
- 230000037452 priming Effects 0.000 title claims abstract description 21
- 230000007704 transition Effects 0.000 claims description 12
- 230000008719 thickening Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an inducer, include the wheel hub who is connected with the pump shaft and install the helical blade on wheel hub, helical blade's blade inlet angle is less than blade outlet angle, helical blade thickness is from the apex to blade root direction thickened gradually, the utility model also discloses a self priming pump of having above -mentioned inducer, the utility model discloses an inducer and the self priming pump that is equipped with this inducer are through the structure of setting the inducer to the variable -pitch to gain better cavitation performance, improved the inlet pressure of impeller, effectively reduce the influence of cavitation to the impeller.
Description
Technical field
This utility model relates to self priming pump technical field, particularly to a kind of inducer and with the self priming pump of this inducer.
Background technology
Self priming pump need not be poured water before activation, directly by scavenging action own, can be drunk up by water, complete self-priming. Needing at ordinary times at a certain amount of water of pump internal memory, water in impeller is drained into spiral case by impeller high speed rotating, forms vacuum at impeller eye, and air and water in suction tube enter the pump housing. When self priming pump is in the process rotating water suction, the entrance of impeller is in negative pressure condition, impeller anti-cavitation scarce capacity, and impeller is subjected to cavitation and damages.
Being directed to the situation of part self priming pump anti-cavitation scarce capacity, improved the mode of impeller eye pressure in the numerous modes improving pump anti-cavitation ability, the mode adding inducer in self priming pump front end is maximally efficient, and to performance without having a strong impact on.
The such as patent documentation of Authorization Notice No. CN203570603U discloses a kind of strong self-priming unprssurized pump, described strong self-priming unprssurized pump is provided with inducer and sealing ring, described inducer is positioned at the suction side of described impeller and constitutes coaxial rotation with described impeller, described sealing ring is fixed in the described pump case outside described suction side, and between described inducer and described sealing ring, composition has pressure chamber. The advantage of this utility model is: can ensure that impeller suction side does not produce cavitation, significantly improve the effective absorption distance of self-priming unprssurized pump, and simple and reasonable, cheap.
The such as patent documentation of Authorization Notice No. CN201106568Y discloses a kind of high rotating speed centrifugal self-priming pump again, including pump case, impeller, be arranged on the change speed gear box of pump shaft input, the sealing device being arranged between impeller and pump case, be arranged on impeller water inlet front end and with the inducer of pump shaft coaxial rotation. This utility model solves that existing centrifugal self-priming pump volume is big, suct the technical problems such as speed is slow, suction head is low, has that volume is little, suction head big, it is fast to suct speed, be easy for installation and maintenance, seal the advantage reliable, efficiency is high.
The technical problems such as but the self priming pump with inducer in said structure still suffers from suction, and journey is limited, anti-cavitation scarce capacity.
Utility model content
This utility model provides a kind of inducer, simple in construction, easily manufactured, it is possible to effectively reduces the cavitation impact on impeller, improves the suction journey of self priming pump simultaneously.
A kind of inducer, including the wheel hub being connected with pump shaft and be arranged on the helical blade on wheel hub, the inlet blade angle of described helical blade is less than outlet blade angle, and described helical blade thickness is thickening gradually to blade root direction from blade tip.
Inducer is designed to the outlet blade angle Variable-pitch Inducers more than inlet blade angle by this utility model, the self priming pump being provided with inducer of the present utility model can obtain good cavitation performance, improve the inlet pressure of impeller, effectively reduce the cavitation impact on impeller. Blade root design thicker to bear various load and to be unlikely to deformation and failure; Considering cavitation performance, blade design is in the tail of cavitation flow, therefore design blade tip is thinner. It is further preferred that the thickness of described helical blade blade tip is 1��1.5mm.
Vane inlet and blade exit are to be defined with the flow direction of liquid stream, and inlet angle is the relative fluid flow angle �� of import1, the angle of outlet is for exporting relative fluid flow angle ��2, it is contemplated that inducer entrance cavitation performance, inlet angle generally gets the small value, and the angle of outlet takes large values, it is further preferred that the inlet blade angle of described helical blade is 4 �㡫5 ��. It is further preferred that the outlet blade angle of described helical blade is 20 �㡫25 ��.
In order to convenient, inducer of the present utility model is installed, it is preferred that described wheel hub and pump shaft link are provided with screwed hole. Said structure is simple, easily processes, and is linked and packed conveniently, manufactures installation cost low.
In order to reduce the exclusion to liquid stream, satisfying dynamic equilibrium, it is preferred that described helical blade circumferentially has three.
Owing to described helical blade thickness is thickening gradually to blade root direction from blade tip, therefore the two sides of helical blade form angle, it is preferred that the angle angle that described helical blade two sides are formed is 2��3 ��. After the thickness of blade tip is determined, angle angle is the thickness of 2��3 �� of decision blade roots.
This utility model additionally provides a kind of self priming pump, and including the pump housing, pump shaft and impeller, the entrance point of described impeller is connected to transition conduit, is provided with the above-mentioned inducer being connected with pump shaft in described transition conduit.
In order to reduce the loss of energy, it is preferred that the gap between blade tip and the transition conduit tube wall of described inducer and transition conduit internal diameter diameter ratio are 0.8��1.1%. When then getting the small value in the good situation of axiality, excesssive gap will cause revealing to be increased, and produces backflow and increases energy loss.
The effect of cavitation is reduced, it is preferred that described pump shaft is vertically arranged and the inlet openings of impeller is downward in order to improve this utility model.
The beneficial effects of the utility model:
Inducer of the present utility model and the self priming pump equipped with this inducer, by inducer is arranged to the structure of varying pitch, thus obtaining good cavitation performance, improve the inlet pressure of impeller, effectively reduces the cavitation impact on impeller.
Accompanying drawing explanation
Fig. 1 is the structural representation of self priming pump of the present utility model.
Fig. 2 is inducer structural representation of the present utility model.
Fig. 3 is the right view of Fig. 2.
Wherein: 1-shaft coupling, 2-accessory impeller, 3-top cover labyrinth plate, 4-lower seal cover plate, 5-impeller, 6-inducer, 7-outlet, 8-spiral case, 9-inlet tube, 10-screwed hole, 11-wheel hub, 12-helical blade, 13-transition conduit, the 14-pump housing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 1 to 3, the self priming pump of the present embodiment includes:
The pump housing 14; For connecting the shaft coupling 1 of power source; For the accessory impeller 2 of sealed coupler 1 end, top cover labyrinth plate 3 and lower seal cover plate 4; Pump shaft that the spiral case 8 being arranged in the pump housing 14 is connected with shaft coupling 1 and the impeller 5 being arranged on pump shaft; Connect the liquid outlet of impeller 5 and the outlet 7 of inlet and inlet tube 9.
Being connected to transition conduit 13 between inlet and the inlet tube 9 of impeller 5, Open Side Down for the inlet of impeller 5, is provided with, in the transition conduit 13 vertically arranged, the inducer 6 being vertically installed at pump shaft end.
Gap �� t between blade tip and transition conduit 13 inwall of inducer 6 is �� t/D1=0.8%��1.1% than transition conduit 13 internal diameter diameter D1, then can get the small value in the good situation of axiality, and excesssive gap causes revealing to be increased, and produces backflow and increases energy loss.
Inducer 6 includes wheel hub 11 and the helical blade 12 being arranged on wheel hub 11, and wheel hub 11 and pump shaft link are provided with screwed hole 10, and in pump shaft front end, threading matches with screwed hole 10, simple in construction, it is simple to processing and installation.
Inducer 6 adopts liquid stream exclusion effect little, and the 3 of satisfying dynamic equilibrium numbers of blade, blade tip thickness, less than blade root, makes the angle that the two sides of helical blade 12 form 2��3 ��, the inlet blade angle of helical blade, less than outlet blade angle, forms the inducer of varying pitch.
The technical problems such as in sum, it is low that the inducer of the present embodiment and self priming pump solve self-priming pumping journey, and anti-suction capacity is not enough, have simple in construction, easily process, and low cost of manufacture improves the advantages such as anti-cavitation ability is obvious.
Claims (7)
1. an inducer, including the wheel hub being connected with pump shaft and be arranged on the helical blade on wheel hub, it is characterised in that the inlet blade angle of described helical blade is less than outlet blade angle, and described helical blade thickness is thickening gradually to blade root direction from blade tip.
2. inducer as claimed in claim 1, it is characterised in that described wheel hub and pump shaft link are provided with screwed hole.
3. inducer as claimed in claim 1, it is characterised in that described helical blade circumferentially has three.
4. inducer as claimed in claim 1, it is characterised in that the angle angle that described helical blade two sides are formed is 2��3 ��.
5. a self priming pump, including the pump housing, pump shaft and impeller, it is characterised in that the entrance point of described impeller is connected to transition conduit, is provided with the inducer as described in Claims 1 to 4 any claim being connected with pump shaft in described transition conduit.
6. self priming pump as claimed in claim 5, it is characterised in that the gap between blade tip and the transition conduit tube wall of described inducer and transition conduit internal diameter diameter ratio are 0.8��1.1%.
7. self priming pump as claimed in claim 5, it is characterised in that described pump shaft is vertically arranged and the inlet openings of impeller is downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107254.XU CN205277905U (en) | 2015-12-25 | 2015-12-25 | Inducer and have self priming pump of this inducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107254.XU CN205277905U (en) | 2015-12-25 | 2015-12-25 | Inducer and have self priming pump of this inducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277905U true CN205277905U (en) | 2016-06-01 |
Family
ID=56062485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521107254.XU Active CN205277905U (en) | 2015-12-25 | 2015-12-25 | Inducer and have self priming pump of this inducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277905U (en) |
-
2015
- 2015-12-25 CN CN201521107254.XU patent/CN205277905U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205243867U (en) | Vortex pump | |
| CN203500031U (en) | Amphibious multistage pump | |
| CN205277905U (en) | Inducer and have self priming pump of this inducer | |
| CN205789245U (en) | A kind of seashore cable cooling device | |
| CN207830155U (en) | A kind of immersible pump pump head structure | |
| CN205089635U (en) | Turn over and bend formula blade water pump | |
| CN206582127U (en) | A kind of horizontal multi-stage centrifugal pump | |
| CN203146407U (en) | Rear vertical shaft tubular pump device with front guide vane | |
| CN107781174A (en) | A kind of efficient submersible axial flow pump of New-type electric machine underneath type | |
| CN207437389U (en) | A kind of efficient submersible axial flow pump of New-type electric machine underneath type | |
| CN204267305U (en) | New-type automatic water pump | |
| CN211343491U (en) | Water activating pump cover with water outlet flow guide channel and water activating pump | |
| CN208900365U (en) | A kind of horizontal linked self-priming pump group with sealing device | |
| CN207598589U (en) | Inhibit the centrifugal pump device of impeller blade cavitation | |
| CN203488256U (en) | Novel self-absorption centrifugal peripheral pump | |
| CN203670235U (en) | Double-impeller submersible pump | |
| CN203717367U (en) | Self-suction non-blockage sewage pump | |
| CN106246605A (en) | A kind of rotary-jet pump header using double split flow blade | |
| CN205908481U (en) | Energy -saving and heat radiation motor | |
| CN205841184U (en) | A kind of gear pump of new structure | |
| CN205478343U (en) | S type double suction centrifugal pump | |
| CN207906088U (en) | A kind of pump head in self priming pump | |
| CN208330767U (en) | A kind of turbocharging acid and alkali-resistance self priming pump | |
| CN207064257U (en) | A kind of water pump complement | |
| CN205089692U (en) | Two -way cooling cooling water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |