CN201133356Y

CN201133356Y - Self-suction centrifugal pump structural optimization and improvement

Info

Publication number: CN201133356Y
Application number: CNU2007200752456U
Authority: CN
Inventors: 陈金平; 张锡淼
Original assignee: Shanghai Liancheng Group Co Ltd
Current assignee: Shanghai Liancheng Group Co Ltd
Priority date: 2007-09-29
Filing date: 2007-09-29
Publication date: 2008-10-15
Anticipated expiration: 2017-09-29

Abstract

The utility model relates to an optimized and improved structure of a self-priming centrifugal pump, which comprises a pump case, a pump cavity, an impeller, a bearing bracket, a mechanical seal, a pump shaft and a reinforced seal. The optimized and improved structure is characterized in that the back of the impeller is provided with a back blade; the bearing bracket is directly cooperated with the small clearance of the back blade; the bearing bracket is directly connected with the radial sealing of the pump case by an O-type seal ring; a leakage and cushion chamber is arranged on the outside of the mechanical seal on the pump shaft, and the leakage and cushion chamber is connected with a fluid accumulation chamber that locates at the bottom of the pump bottom by a water leading hole, and the fluid accumulation chamber is communicated with the pump case by a tap hole. The utility model has the advantages that the optimized and improved structure optimizes and improves the structure of the self priming centrifugal pump, the cushion function for leakage fluid is provided, the appearance of the equipment is improved, the disassembly is convenient, and meanwhile, the added back blade structure, not only balances parts of axial force, but also avoids hydraulic loss on the upper of the impeller caused by the impact of rotational flows as well as improves the efficiency of a water pump. The utility model has obvious economic benefit and higher social benefit.

Description

The structure optimization of self-priming centrifugal pump improves

Technical field

The structure optimization that the utility model relates to a kind of self-priming centrifugal pump, particularly a kind of self-priming centrifugal pump improves.

Background technique

The outer form height of general self-priming centrifugal pump and narrow (as Fig. 1), impeller 14 is not considered balancing axial thrust, and right-hand member and pump cover 12 and pump case 15 surround pump chamber 13, and bearing bracket stand parts 11 cooperate with pump cover 12, and pass through pump cover 12 and connect with pump case 15.Complicated integral structure, shortage aesthetics, mounting or dismounting trouble and cost are higher; There is hydraulic loss in pump chamber 13 because of eddy flow impacts, and has reduced the efficient of water pump.

Summary of the invention

The purpose of this utility model is the existing the problems referred to above of structure that solve self-priming centrifugal pump in the prior art, provides a kind of structure optimization of self-priming centrifugal pump to improve.The structure optimization of the utility model design self-priming centrifugal pump improves, comprise pump case, pump chamber, impeller, bearing bracket stand, mechanical seal, pump shaft, reinforced seal, it is characterized in that: there is back blade at the back at impeller, direct and the little Spielpassung of back blade of bearing bracket stand, bearing bracket stand is connected with the pump case radial seal by the O RunddichtringO, the outside of the mechanical seal on pump shaft has one to leak buffer cavity, leak buffer cavity and connect the fluid collection chamber that is positioned at the pump case bottom by priming hole, fluid collection chamber is communicated with the pump case outside by taphole.The utility model has the advantages that the optimization to the self-priming centrifugal pump structure improves, newly added the leakage fluid pooling feature, strengthened the equipment aesthetics; Also made things convenient for mounting or dismounting, set up back vane structure simultaneously, both balance section axial power, also avoided upper impeller because of eddy flow impacts the hydraulic loss that causes, improved pump efficiency.Have tangible economic benefit and high social.

Description of drawings

Accompanying drawing 1 is the prior art constructions schematic representation,

Accompanying drawing 2 is a structural representation of the present utility model,

Below in conjunction with drawings and Examples the utility model is elaborated,

Embodiment

Comprise pump case 1, pump chamber 2, impeller 3, bearing bracket stand 4, mechanical seal 5, pump shaft 6, outside framework oil seal 7 among the figure, it is characterized in that: back blade 8 is arranged at the back of impeller 3, bearing bracket stand 4 direct and back blade 8 little Spielpassung, bearing bracket stand 4 is connected with pump case 1 radial seal by O RunddichtringO 9, the outside of the mechanical seal 5 on pump shaft 6 has one to leak buffer cavity 10, leak buffer cavity 10 and connect the fluid collection chamber 12 that is positioned at pump case 1 bottom by priming hole 11, fluid collection chamber 12 is communicated with pump case 1 outside by taphole 13.The utility model is on general self-priming centrifugal pump basis, strengthens pump case 1 width, reduces water intake and water outlet height, outside corner angle are designed to big fillet, remove former pump cover 12, bearing bracket stand 4 direct and back blade 8 little Spielpassung realize radial seal by O RunddichtringO 9 and pump case 1; Buffer cavity 10 is leaked in mechanical seal 5 left sides design one, leakage fluid is introduced fluid collection chamber 12 and is discharged by taphole 13 by priming hole 11.Leak buffer cavity 10 right-hand members one outside framework oil seal 7 is set, make the 5 inefficacy initial stages of mechanical seal can postpone leakage fluid and enter bearing bore 14.

Claims

1, the structure optimization of self-priming centrifugal pump improves, comprise pump case, pump chamber, impeller, bearing bracket stand, mechanical seal, pump shaft, reinforced seal, it is characterized in that: there is back blade at the back at impeller, direct and the little Spielpassung of back blade of bearing bracket stand, bearing bracket stand is connected with the pump case radial seal by the O RunddichtringO, the outside of the mechanical seal on pump shaft has one to leak buffer cavity, leaks buffer cavity and connects the fluid collection chamber that is positioned at the pump case bottom by priming hole, and fluid collection chamber is communicated with the pump case outside by taphole.