CN2493761Y

CN2493761Y - Water discharge pump

Info

Publication number: CN2493761Y
Application number: CN 01241835
Authority: CN
Inventors: 傅杰文
Original assignee: Zhejiang Sanhua Co Ltd
Current assignee: Zhejiang Sanhua Co Ltd
Priority date: 2001-08-06
Filing date: 2001-08-06
Publication date: 2002-05-29
Anticipated expiration: 2011-08-06

Abstract

A water discharge pump includes a pump body, a rotating impeller arranged in the pump body and driven by electric motor components. The lower part of the rotating impeller is provided with a conical prerotation vane consisting of at least two uniformly arranged small diameter vanes in a right-angled triangle shape. The upper part of the rotating impeller is provided with at least four uniformly arranged big diameter vanes. The small diameter vanes in a right-angled triangle shape in the lower part are connected with the corresponding big diameter vanes in the upper part so as to cause the pump to have a reasonable and compact structure and liquid can flow to a liquid outlet swimmingly from a lower part liquid inlet, thereby improving the pump lift. And as the liquid flow pressure changes gently, air bladders generated in the pump body are reduced, thereby reducing noise.

Description

Draining pump

The utility model relates to a kind of draining pump small central air conditioning, that get rid of condensed water that is exclusively used in, belong to a kind of refrigeration part.

Traditional draining pump that is used for small central air conditioning, it by the pump housing, be placed in the electric machine assembly in the pump housing and form by the rotary blade that rotatingshaft drives.The bottom of rotary blade is provided with the guide plate that is made of four rectangle path blades, and top is provided with eight big footpath blades, and the path blade is provided with a little hypotenuse transition with big footpath blade.During draining pump work, liquid flows in the pump housing under path blade centrifugal action upward, when flowing to big blade, centrifugal force sharply increases, flow velocity also sharply increases thereupon, cause the hydrodynamic pressure sudden change in large and small blade joint, thereby produce bubble on the top of rotary blade, this bubble collides rotation blade and pump housing inwall becomes noise and vibrates the reason that produces.And because the big relatively footpath of path blade centrifugal force blade is little, and the variation of track of stream direction greatly, and the liquid of impeller bottom can not add to the top of impeller smooth and easy and in time, thereby has limited the lift of water pump.

The purpose of this utility model is to solve can not smooth and easyly circulating because of bubble makes current of existing in the prior art, thereby limited the bigger defective of pump head and noise, proposed following technical solution: it includes the pump housing, is placed in the rotary blade that is driven by electric machine assembly in the pump housing, at least the cone-shaped guide plate that is made of two uniform rectangular respectively leg-of-mutton path blades is arranged at the bottom of this rotary blade, top is provided with at least four uniform big footpath blades, and the big footpath blade that the path blade of bottom right-angled triangle is corresponding with top is connected.

The cone-shaped guide plate that is made of four uniform rectangular respectively leg-of-mutton path blades is arranged at described rotary blade bottom, and its tapering is the 34-42 degree, and correspondingly the suction port inwall at the pump housing also is designed to the cone-shaped wall of identical tapering with it.

The utility model has been done corresponding improvement on rotary blade, make it to have rational in infrastructure, compact, liquid can flow to liquid outlet from the bottom liquid entering hole swimmingly, thereby has improved the lift of water pump, and changes mild because of flow stream pressure, the bubble that has reduced in the pump housing generates, make characteristics such as noise reduction, through sampling comparative trial as can be known, under the identical situation of input power with traditional product, it is big that flow becomes, thereby illustrate that efficient of the present utility model is higher.

Description of drawings is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of rotary blade of the present utility model,

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is that the B of Fig. 2 is to view.

Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model mainly includes the pump housing 4 that is combined by upper pump casing 1 and lower pump body 2 and seal ring 3, is placed in the rotary blade 7 that driven by electric machine assembly 5 and rotatingshaft 6 in the pump housing etc.Rotatingshaft 6 stretches out in the end of electric machine assembly 5 and has been inserted in a block water plate 8.This block water plate 8 had both played the dash effect, stopped that the moisture content that upwards be with through rotary blade 7 bottom enters in the electric machine assembly 5; Simultaneously can play the oil-collecting effect again, and when motor stops operating, following lubricant oil be sucked in the electric machine assembly 5 again.Fig. 2 is to shown in Figure 4, and the bottom of rotary blade 7 is a cone-shaped guide plate 10 that is made of four uniform rectangular leg-of-mutton path blades 9, and its tapering is 38 degree.The top of rotary blade 7 is provided with eight of symmetric arrangement big footpath blades 11, and path blade 9 is connected with corresponding big footpath blade 11.Corresponding to the guide plate of cone-shaped, also be designed to the cone-shaped wall 13 of corresponding tapering at suction port 12 inwalls of pump housing bottom.Because the guide plate two relative path blade-shaped of rotary blade bottom into a cone shape, and tapering is identical with the inwall of pump housing suction port, the path blade is connected with big footpath blade, so track of stream curvature is less, and the lower guide flow area of rotary blade is bigger, and centrifugal force is bigger, and pumpage is strong, liquid can in time flow to big footpath blade from bottom path blade swimmingly, thereby the raising lift, and, because of flow stream pressure changes mild, reduce the bubble in the pump housing, reduced noise.

Claims

1, a kind of draining pump, it includes the pump housing, be placed in the rotary blade that drives by electric machine assembly in the pump housing, at least the cone-shaped guide plate (10) that is made of two uniform rectangular leg-of-mutton path blades (9) is arranged at the bottom that it is characterized in that rotary blade (7), top is provided with at least four uniform big footpath blades (11), and the big footpath blade (11) that the path blade (9) of bottom right-angled triangle is corresponding with top is connected.

2, draining pump according to claim 1, it is characterized in that the cone-shaped guide plate (10) that is made of four rectangular leg-of-mutton path blades of uniform difference (9) is arranged at described rotary blade (7) bottom, the tapering of cone-shaped guide plate is the 34-42 degree, and correspondingly suction port (12) inwall at the pump housing also is designed to the cone-shaped wall of identical tapering with it.