CN202789688U - Pump impeller with novel attached blades - Google Patents
Pump impeller with novel attached blades Download PDFInfo
- Publication number
- CN202789688U CN202789688U CN 201220178086 CN201220178086U CN202789688U CN 202789688 U CN202789688 U CN 202789688U CN 201220178086 CN201220178086 CN 201220178086 CN 201220178086 U CN201220178086 U CN 201220178086U CN 202789688 U CN202789688 U CN 202789688U
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- CN
- China
- Prior art keywords
- impeller
- pump
- novel
- shaft seal
- blades
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- Expired - Fee Related
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Abstract
The utility model discloses a pump impeller with novel attached blades. The pump impeller with the novel attached blades comprises blades, an impeller, an impeller disc, a rear protection cover, a pump cover and a shaft seal. Novel second order blades are arranged on the rear side of the impeller disc. The rear protection cover, the pump cover and the shaft seal are sequentially arranged on the rear end of the impeller disc, wherein the pump cover and the shaft seal are connected on a pump shaft. Due to the fact that attached centrifugal force is utilized when the impeller with the novel attached blades rotates, and reversed pressure is produced. Therefore, pressure difference of the two sides of the impeller can be reduced, axial force of the impeller is reduced, at the same time the pressure difference of the two sides of a sealing element is reduced, and leakage quantity is reduced. Impeller efficiency is improved to a certain extent. The problem that axial force of a number of high-pressure single suction pumps, caused by high pressure, is large is solved. Service life of a bearing is prolonged and cost is saved for users. At the same time, reduction of positive pressure of the shaft seal is favorable for preventing slurry medium from leaking so that running reliability and using sealing of a slurry pump are integrally improved. Requirements of environment protection and energy saving are satisfied. The pump impeller with the novel attached blades is strong in generality and can be served as the full open type or half-open type or closed type impeller.
Description
Technical field
The utility model relates to the blade wheel structure technical field of pump, can be widely used in the technical field of the single stage centrifugal pump such as medium water pump, stock pump, chemical pump.
Background technique
The structural type of centrifugal pump shows as, pump intake piping is along the impeller shaft direction, outer pipe becomes an angle of 90 degrees with impeller shaft, in vane rotary operation fed sheet of a media process, the medium of carrying is imported and exported velocity magnitude and change has occured direction, particularly axial velocity becomes 0, according to principle of momentum conservation, medium can impose on the very large axial force of runner, axial force passes to bearing and sealing system by main shaft, excessive axial force can make bearing and sealing part abrasion serious, greatly shortens the working life of pump.General pump impeller is by reducing this axial force at a plurality of vents of hub disk processing, has a large amount of leakages that cause medium if vent is excessive, significantly reduces the efficient of impeller, and vent is too small, and the axial force on the impeller still can be very large.Also can reduce axial force by the mode that installs attached blade additional of trying to get to the heart of a matter at wheel, attached blade produces certain centrifugal force during vane rotary, thereby behind impeller, produce reverse pressure, can reduce the pressure difference of impeller both sides, therefore axial force of impeller is reduced, but the existence of attached blade meeting can increase volumetric loss and the disc friction losses of impeller, significantly reduces impeller adiabatic efficiency.
Summary of the invention
The utility model is for defects, purpose is to provide a kind of can reduce axial force of impeller, but can not increase the volumetric loss of impeller, and the degree that impeller adiabatic efficiency is descended is reduced to minimum, the pattern of the attached blade of novel second order all can adopt at standard-sized sheet, half-open or double shrouded wheel, and versatility is good.
[0004]The technical solution of the utility model is: the utility model is a kind of pump impeller with novel attached blade; comprise blade, impeller, wheel disc, rear wing, pump cover, shaft seal; the wheel disc rear side is provided with the attached blade of novel second order, and the wheel back-end disk is established successively rear wing, is connected to pump cover and shaft seal on the pump shaft.Attached blade behind the wheel disc has two rank; close outer rim place is the attached blade of streamlined bending behind the wheel disc; protrude vertically near the inner edge position behind the wheel disc; on the wheel disc platform that protrudes the attached blade of second-order right cylinder shape is set; the rear wing of wheel back-end disk also is made as step-like; closely cooperate with the attached blade of second order, rear wing is connected on the pump cover.
The utility model has the advantages that: 1) the more traditional attached blade of the attached blade pattern of the utility model can reduce axial force of impeller greatly, therefore under same case, can effectively reduce impeller vent diameter, improves the volumetric loss of impeller, improves impeller adiabatic efficiency; 2) the attached blade of the utility model also makes the pressure reduction of Sealing both sides on the pump cover reduce, and effectively reduces wearing and tearing and the leakage of Sealing, more energy-conserving and environment-protective.3) the attached blade of the utility model can also effectively prevent the obstruction of pump chamber.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model impeller.
Fig. 3 is the side view of Fig. 2.
1 is that blade, 2 is that impeller, 3 is that wheel disc, 4 is the attached blade of single order among the figure, and 5 is the attached blade of second order, and 6 is that rear wing, 7 is that pump cover, 8 is shaft seal.
Embodiment
The utility model comprises blade 1, impeller 2, wheel disc 3, rear wing 6, pump cover 7 and shaft seal 8, and wheel disc 3 rear sides are provided with the attached blade 4 of novel single order, the attached blade 5 of second order, and wheel disc 3 rear ends are established rear wing 6 and the pump cover 7 that is connected on the pump shaft successively.Attached blade behind the wheel disc 3 has two rank; wheel disc 3 rear close outer rim places are the attached blade of streamlined bending; wheel disc 3 is rear near protruding vertically the inner edge position; on wheel disc 3 platforms that protrude the attached blade of second-order right cylinder shape is set; the rear wing 6 of wheel disc 3 rear ends also is made as step-like; closely cooperate with the attached blade 5 of second order, rear wing 6 is connected on the pump cover 7.
Impeller 2 structures of the attached blade of the utility model can be standard-sized sheet impeller, half-open impeller or double shrouded wheel.
Claims (1)
1. pump impeller with novel attached blade; comprise blade, impeller, wheel disc, rear wing, pump cover, shaft seal; the wheel disc rear side is provided with the attached blade of second order; the wheel back-end disk is established successively rear wing, is connected to pump cover and shaft seal on the pump shaft; it is characterized in that; attached blade behind the wheel disc has two rank; wheel disc is the attached blade that is streamlined bending near outer rim; wheel disc protrudes vertically near the inner edge position; the attached blade of second-order right cylinder shape is set on the wheel disc boss; rear wing also is made as step-like, closely cooperates with the attached blade of second order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178086 CN202789688U (en) | 2012-04-25 | 2012-04-25 | Pump impeller with novel attached blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178086 CN202789688U (en) | 2012-04-25 | 2012-04-25 | Pump impeller with novel attached blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789688U true CN202789688U (en) | 2013-03-13 |
Family
ID=47816957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220178086 Expired - Fee Related CN202789688U (en) | 2012-04-25 | 2012-04-25 | Pump impeller with novel attached blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10533557B2 (en) | 2016-04-26 | 2020-01-14 | Pentair Flow Technologies, Llc | Cutting assembly for a chopper pump |
| US11655821B2 (en) | 2013-03-15 | 2023-05-23 | Pentair Flow Technologies, Llc | Cutting blade assembly |
-
2012
- 2012-04-25 CN CN 201220178086 patent/CN202789688U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11655821B2 (en) | 2013-03-15 | 2023-05-23 | Pentair Flow Technologies, Llc | Cutting blade assembly |
| US10533557B2 (en) | 2016-04-26 | 2020-01-14 | Pentair Flow Technologies, Llc | Cutting assembly for a chopper pump |
| US11168693B2 (en) | 2016-04-26 | 2021-11-09 | Pentair Flow Technologies, Llc | Cutting assembly for a chopper pump |
| US11560894B2 (en) | 2016-04-26 | 2023-01-24 | Pentair Flow Technologies, Llc | Cutting assembly for a chopper pump |
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Legal Events
| 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 |
Granted publication date: 20130313 Termination date: 20150425 |
|
| EXPY | Termination of patent right or utility model |