CN102954032A

CN102954032A - Centrifugal water pump

Info

Publication number: CN102954032A
Application number: CN2012104777000A
Authority: CN
Inventors: 丁黎清
Original assignee: Jiangsu Wuxi Huishan Pump Industry Co Ltd
Current assignee: Jiangsu Wuxi Huishan Pump Industry Co Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-03-06

Abstract

The invention discloses a centrifugal water pump. The centrifugal water pump comprises a pump body and an impeller arranged in the pump body; one end of the blade on the impeller is fixed on an impeller shaft in an inclined way; and the end of the blade away from the impeller shaft is parallel to the shaft of the impeller. According to the centrifugal water pump provided by the invention, as the blade is fixed on the impeller shaft in an inclined way, and the end away from the impeller shaft is parallel to the impeller shaft of the impeller, the arrangement of the blade can reduce the shearing force between fluid and the blade at an inlet, while the blade structure at an outlet still maintains the effect of the existing straight paddle blade; the side of the blade inclined forwards with the same rotation direction is arranged to be tangential with the rotation direction, thus, the shearing force is further reduced and the efficiency of the water pump is improved.

Description

Centrifugal water pump

Technical field

The present invention is a kind of centrifugal water pump.

Background technique

Water pump is a kind of machinery of carrying fluid or increasing hydrodynamic pressure, generally is to adopt centrifugation to improve the fluid rotating speed, reaches the speed when improving fluid and leaving impeller; Existing impeller is the straight-arm chip architecture a lot, and active area is large, and liquid speed promotes fast, but produce larger shear force effect between such blade structure and the fluid, that is to say the effect that inputs to impeller, have part to be converted into idle work, cause the power of water pump to reduce, affected pump efficiency.

Summary of the invention

The purpose of this invention is to provide a kind of centrifugal water pump, solve the existing lower problem of centrifugal water pump efficient.

Purpose of the present invention is come specific implementation by the following technical programs: a kind of centrifugal water pump, include the pump housing and be located at the interior impeller of the pump housing, oblique being fixed on the impeller shaft of this impeller upper blade one end, and this blade is parallel with the axle of impeller away from a distolateral limit of impeller shaft.

Further, oblique front side and sense of rotation of this blade is tangent.

Further, should be thinner than another side with the tangent side of sense of rotation.

Centrifugal water pump of the present invention is fixed on the impeller shaft blade is oblique, and it is still parallel with impeller shaft away from an end of impeller shaft, blade is set like this can reduces the ingress, the shearing force effect between fluid and the blade, and the blade structure in outlet port also keeps the effect of existing straight-arm sheet; Oblique front blade side that will be consistent with sense of rotation is made as with sense of rotation tangent, then further reduces shearing force, improves pump efficiency.

Figure of description

The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.

Fig. 1 is the structural drawing of the described centrifugal water pump of the embodiment of the invention;

Fig. 2 is the structural representation of Leaf of the present invention.

Embodiment

The below adopts specific embodiment to describe the present invention by reference to the accompanying drawings:

A kind of centrifugal water pump as shown in Figure 1 includes the pump housing 1 and impeller 2, and impeller 2 is located in the pump housing 1; The end that blade 21 on the impeller 2 is fixedly connected with impeller shaft is made as oblique setting, and should hold the blade side consistent with sense of rotation front, as shown in Figure 2, be to be oblique active force between blade 21 these sides and the fluid, reduce the shearing force between traditional straight paddle blade and the fluid, improved the efficient of water pump blade; And this blade 21 still is made as conventional vane shapes away from an end of impeller shaft simultaneously, and namely this end is parallel with impeller shaft, has kept the large effect area of traditional blades, and is fast thereby liquid speed promotes.

Side and sense of rotation before blade 21 is oblique are tangent, like this between blade 21 and the fluid for tangentially to contact, the shearing force minimum, more fluid enters in the rotation blade 21, has improved fluid at the pressure that exports 12 places, has increased the efficient of water pump.

Because blade 21 sides before should be oblique are mainly and fluid contact, its thickness is made as thin than another side, both kept the Driving force of blade, reduce simultaneously the frictional force between blade 21 and the fluid, and then improved pump efficiency.

Claims

1. a centrifugal water pump includes the pump housing and is located at the interior impeller of the pump housing, it is characterized in that: oblique being fixed on the impeller shaft of this impeller upper blade one end, and this blade is parallel with the axle of impeller away from a distolateral limit of impeller shaft.

2. centrifugal water pump as claimed in claim 1, it is characterized in that: side and sense of rotation before this blade is oblique are tangent.

3. centrifugal water pump as claimed in claim 2 is characterized in that: should be thinner than another side with the tangent side of sense of rotation.