CN201180673Y

CN201180673Y - Bidirectional reflux pump

Info

Publication number: CN201180673Y
Application number: CNU2008200664271U
Authority: CN
Inventors: 吴新生; 林木松; 范北林; 刘小斌; 陈鸿丽
Original assignee: Changjiang River Scientific Research Institute Changjiang Water Resources Commission
Current assignee: Changjiang River Scientific Research Institute Changjiang Water Resources Commission
Priority date: 2008-04-09
Filing date: 2008-04-09
Publication date: 2009-01-14
Anticipated expiration: 2018-04-09

Abstract

A bidirectional reflux pump includes a frequency conversion motor and an impeller, and is characterized in that the impeller and a shaft 2 take the symmetrical S shapes with an overlook view when the impeller axis thereof is parallel with the horizon after the pump is placed on a horizontal plane. The thickness of the impeller is 10 to 12 mm. The bidirectional reflux pump has the advantages that all of the original advantages and characteristics of a reflux pump are maintained, and the bidirectional function thereof can save pipeline equipment investment and operational cost, thereby saving large investment; the bidirectional reflux pump suits the occasions using the reflux pump and requiring bidirectional drainage; and the efficiency and the energy saving effect can be better than those of the water pumps of other types.

Description

The bidirectional-reflux pump

Technical field

The utility model relates to the backflow water pump, the backflow water pump of especially a kind of little lift, the two-way use of big flow energy.

Background technique

Known reflux pump is used for the mixed-liquor return of environmental protection industry (epi) B-grade sewage treatment plant mixed-liquor return, denitrification denitrogenation more, also can be used for the place of the little lift of needs such as recirculation in land drainage, irrigation and the wastewater treatment process, big flow.At present, need all need use the reflux pump more than two in the circulation between two cesspools and discharging or two-way operating mode of drawing water for these, existing reflux pump can not two-wayly draw water, and therefore increased equipment and installed and operating cost, and power consumption.

Summary of the invention

The utility model provides a kind of energy bidirectional-reflux pump that positive and negative both direction draws water, and is used for little lift, the big two-way place of drawing water of flow needs, in order to the installation of saving equipment, operating cost, cuts down the consumption of energy.

The blade wheel structure feature of described bidirectional-reflux pump is: this pump is placed ground level, and its impeller shaft line parallel is when the horizon, and from overlooking direction, its impeller is symmetrical S shape with axle 2.Impeller thickness is 10～12mm.

The beneficial effects of the utility model are, the original whole excellent characteristics of reflux pump have not only been kept, its two-way function that has can make pipeline equipment input and operating cost save great amount of investment, in the place that is fit to use reflux pump and needs double drainage, can be than obtaining higher efficient and energy-saving effect with the water pump of other pattern.

Description of drawings

Fig. 1 is the utility model bimodal current impeller plan view,

Fig. 2 is the plan view of Fig. 1,

Fig. 3 is Figure 1A-A face sectional view,

Fig. 4 is existing reflux pump current impeller plan view,

Fig. 5 is the plan view of Fig. 4.

Embodiment

Show as Fig. 1～3, described bidirectional-reflux pump comprises variable-frequency motor, impeller 1-1,1-2,1-3, this pump is placed ground level, its impeller shaft line parallel is when the horizon, from overlooking direction, its impeller is symmetrical S shape with axle 2, and promptly from overlooking direction (showing as Fig. 2), the axis of its impeller 1-3 and 1-2 and axle 2 is symmetrical S shape; Among Fig. 3, impeller thickness 3 can be selected according to the size in pump footpath, is being between 10～12mm mostly, also need consider the caused Strength Changes of pump rotary speed simultaneously, and match the motor of suitable power with it.

With the existing reflux pump current impeller plan view of Fig. 5 and Fig. 2 the utility model bimodal current impeller plan view relatively after, can obviously find out, the major character of technical solutions of the utility model is that the asymmetric shape of unidirectional impeller is made into symmetrical S shape impeller, from the plan view of Mechanical drawing three-view diagram as can be seen, the impeller of bidirectional-reflux pump and wheel axis are symmetrical S shape (showing as Fig. 2), and general unidirectional be C shape (showing) as Fig. 5.When motor commutation turned round, current are reverse flow thereupon.When using the bidirectional-reflux pump, but the automatic controller of a frequency control of motor speed of adapted, to be suitable for the place that needs the control of flow size variation.

The bidirectional-reflux pump can be widely used in the field that recirculation in land drainage, irrigation and the wastewater treatment process etc. needs little lift, big flow, also can be used for tide simulation system, used the tide simulation system of bidirectional-reflux pump can simulate the tidal wave that the tidal system system is given birth in control preferably.

Claims

1. a bidirectional-reflux pump comprises variable-frequency motor, impeller, it is characterized in that: this pump is placed ground level, and its impeller shaft line parallel is when the horizon, and from overlooking direction, its impeller is symmetrical S shape with axle (2).