CN202251072U

CN202251072U - Single-stage centrifugal pump impeller

Info

Publication number: CN202251072U
Application number: CN201120390697XU
Authority: CN
Inventors: 管仁强
Original assignee: SHANDONG LUYUAN PUMP CO Ltd
Current assignee: SHANDONG LUYUAN PUMP CO Ltd
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-05-30
Anticipated expiration: 2021-10-14

Abstract

The utility model discloses a single-stage centrifugal pump impeller which comprises a front cover plate, a rear cover plate and a blade for connecting the front cover plate and the rear cover plate, wherein the blade gradually increases in thickness size along the radial direction from a water inlet to a water outlet, and is helical in the radial direction from the water inlet to the water outlet. According to the utility model, the blade enables a runner to be gradually extruded along the circumference direction, thus a relatively larger distance between the front cover plate and the rear cover plate is obtained on the premise that the discharge area of an impeller is unchangeable. The single-stage centrifugal pump impeller is reasonable in structure, the obtained sand core has high strength, casting process is gppd and the casting yield of the impeller is high.

Description

The one-stage centrifugal pump impeller

Technical field

The utility model relates to a kind of centrifugal pump impeller.

Background technique

Existing IS50-32-200 centrifugal pump impeller is made up of front shroud, back shroud, blade, wheel hub; Generally speaking; Be designed with preoral loop on the front shroud, be designed with the back choma on the back shroud, blade is clipped between front shroud and the back shroud; Each position role is: preoral loop forms micro-gap confined liquid capacity of reflux with the efficient of avoiding waste with back choma and shell; Front shroud, back shroud and blade form several along the circumferential direction equally distributed runners jointly, and liquid is exactly in these runners, under the impeller rotation drives, flowed to outer radius from the center portion of impeller by action of centrifugal force, thereby produce the flow and the lift of pump.But existing IS50-32-200 centrifugal pump impeller owing to its blade along import to export its thickness almost no change cause between the front and rear cover plate apart from too small, also just make casting sand core thin excessively, cause the impeller qualified casting too low.

Summary of the invention

The technical problem that the utility model will solve is in order to overcome the too low problem of impeller qualified casting of existing IS50-32-200 pump, to provide a kind of qualified casting high one-stage centrifugal pump impeller.

For solving the problems of the technologies described above; The utility model comprises front shroud, back shroud and connects the blade of front and rear cover plate; To be described blade be thickness size from the radial direction of water intake to water outlet to its structural feature becomes gradually greatly, and blade is from the radial direction of water intake to water outlet shape in the shape of a spiral.

Described blade is a plain vane.

After adopting said structure, become gradually greatly, and blade is from the radial direction of water intake to water outlet shape in the shape of a spiral because blade is thickness size from the radial direction of water intake to water outlet; Runner is along the circumferential direction squeezed gradually; In order to keep the due discharge area of impeller, thereby obtain distance between the relatively large front and rear cover plate, thereby also just can obtain thicker casting sand core relatively; Then the intensity of casting sand core improves relatively, makes that improving the impeller qualified casting becomes possibility.

Description of drawings

Describe in further detail below in conjunction with the embodiment of accompanying drawing the utility model:

Fig. 1 is the structural representation of the utility model vertical profile;

Fig. 2 is the cross-sectional structural representation of the utility model.

Embodiment

With reference to accompanying drawing, this one-stage centrifugal pump impeller comprises front shroud 2, back shroud 4 and the blade 3 that connects front and rear cover plate and be provided with at interval, and front shroud 2 centers are designed with preoral loop 1; Preoral loop 1 inner chamber is a water intake; The impeller outer radial periphery is a water outlet, and back shroud 4 centers are designed with wheel hub 6, and blade 3 is thickness size from the radial direction of water intake to water outlet and becomes big gradually; Width dimensions diminishes gradually, and blade 3 is from the radial direction of water intake to water outlet shape in the shape of a spiral.Runner is along the circumferential direction squeezed gradually; In order to keep the due discharge area of impeller, thereby obtain distance between the relatively large front and rear cover plate, thereby also just can obtain thicker casting sand core relatively; Make that improving qualified casting becomes possibility, blade 3 is a plain vane.

Claims

1. one-stage centrifugal pump impeller; The blade (3) that comprises front shroud (2), back shroud (4) and connection front and rear cover plate; It is characterized in that described blade (3) is thickness size from the radial direction of water intake to water outlet and becomes gradually greatly, and blade (3) is from the radial direction of water intake to water outlet shape in the shape of a spiral.

2. one-stage centrifugal pump impeller according to claim 1 is characterized in that described blade (3) is a plain vane.