SU1231273A1 - Impeller of centrifugal pump - Google Patents

Description

The invention relates to pumping, in particular to the designs of impellers of centrifugal pumps.

The purpose of the invention is to reduce the hydraulic losses in the pump by reducing the uneven flow rates at the wheel outlet.

The drawing shows the design of the impeller.

The impeller of the centrifugal pump 10, the face (angle) allows to provide contains the main blades 1, which form the equality of the working environment costs for

When the impeller rotates, the flow of working medium passing through the interscapular channels is divided into two parts by additional blades 3. At the dark sides of 6 blades, 1 flow has great speed. The offset of the input edges 4 additional blades 3 in the direction of the rear sides of the 6 main blades 1 on a certain,

interscapular channels 2, and additional shortened blades 3 with inlet and outlet edges 4 and 5, while the inlet edges 4 are offset from the axial lines of interscapular channels 2 towards the 6 sides of the main vanes 1, and the outlet edges 5 are placed on the outer diameter of the impeller Additional the blades 3 are S-shaped, while their exit edges 5 are located on the center lines of the interscapular channels 2.

The impeller operates as follows / manner.

two parts of the interscapular channels 2. Since the outlet edges of the blades 3 are located on the center line of the interscapular channels (width t) of the two parts of the interscapular channels 2 are the same), the uneven flow rates at the outlet are reduced. This leads to a decrease in hydraulic losses in the pump outlet. The indicated displacement of the input edges 4 and the location of the output edges on the axes of the interscapular channels 2 require the execution of additional S-shaped blades.

Editor M. Nedoluzhenko Order 2551/41

Compiled by V. Devisilov

Tehred N. Boikapo Proofreader V. Sinitska

Circulation 586 VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

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Production and printing company, Uzhgorod, st. Project, 4

When the impeller rotates, the flow of working medium passing through the interscapular channels is divided into two parts by additional blades 3. At the dark sides of 6 blades, 1 flow has great speed. The offset of the input edges 4 additional blades 3 in the direction of the rear sides of the 6 main blades 1 on a certain,

two parts of interscapular channels 2. Since the outlet edges of the blades 3 are located on the center lines of the interscapular channels (width t) of the two parts of interscapular channels 2 are the same), the uneven flow rates at the outlet are reduced. This leads to a decrease in hydraulic losses in the pump outlet. The indicated displacement of the input edges 4 and the location of the output edges on the axes of the interscapular channels 2 require the execution of additional S-shaped blades.

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Claims (1)

CENTRIFUGAL PUMP RUNNING WHEEL containing main vanes. forming interscapular channels, and additional shortened blades with input and output edges, while the input edges are offset from the center lines of the interscapular channels towards the back sides of the main blades, and the output edges are placed on the outer diameter of the impeller, characterized in that, in order to reduce hydraulic losses in the pump by reducing the unevenness of the flow rates at the exit of the wheel, additional blades are made in the form of a S shape, while their output edges are located on the axial lines of the intersection accurate channel KZ GO KZ Μ GO 1 12312