BLOCK-MODULAR CENTRIFUGAL PUMP Russian patent published in 2012 - IPC F04D1/06 F04D29/62 

FIELD: engines and pumps.

SUBSTANCE: pump includes outer housing 1 with inlet and delivery branch pipes 2, 3. From branch pipe 3 side there is delivery cover 4. Inside outer housing there are arranged guide vanes 5, sections 6 and adapter 7 forming inner housing. Inside the things mentioned there is rotor installed containing shaft 8 with unloader 9 of axial force and blade wheels 10. Inner housing is connected to outer housing 1 via circular step 11 and additional circular step 12 and gaskets 13, 14. Steps 11, 12 are made on sides being of different diameter. Inner housing end opposite to adapter 7 is located in area of cover 4 contacting to sprung springs 15, shells 16 installed in cover 4 mortices. Cover 4 has a circular step 17 with gasket 18. Cover 4 is located in the middle of outer housing 1 and is enveloped by its ledge 19. All steps 11, 12, 17 on adapter 7 sideboards and on cover 4 are arranged so that gaskets 13, 14, 18 are behind these steps in relation to branch pipe 3. Between step 12, on larger sideboard of adapter 7, and branch pipe 3 there is connector 20 of outer housing 1 consisting of two circular steps 21, 22 with gasket 23. Outer housing is pressed with fastening elements 24, 25.

EFFECT: improving operation and assembling of pump, reducing efforts upon assembling, enhancing production effectiveness.

2 cl, 1 dwg