CN200958478Y

CN200958478Y - Split centrifugal pump

Info

Publication number: CN200958478Y
Application number: CN 200620021769
Authority: CN
Inventors: 赖轩明
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2007-10-10
Anticipated expiration: 2016-09-29

Abstract

The utility model provides a bypass type centrifugal pump, which is composed of a pump body, a blade arranged in the pump body, a motor connected by an output shaft and the blade, an axial seal between the output shaft of the motor and the pump body; wherein, the motor is fixed on the pump body, and the blade is composed of straight radial blades distributed in uniformpiston. The pump body is provided with a differential pressure plate, which is provided with the rectangular varying area channels distributed in uniformpiston for separating the dynamic and static pressure. A circulation pipe is arranged between a water inlet and a water outlet on the pump body, and the circulation pipe is provided with a control valve. The utility model can realize the ideal high efficiency operating condition in 100%, and has high head coefficient. The structure and process is very simple and reasonable and has high degree of general utilization. The utility model can separate the dynamic and static pressure and free of axial force, and no inlet end circumfluence of the blade will occur. By adopting the technical proposal of arranging the circulation pipe and the control valve, the storing liquid power of the internal circulation in the blade can be changed into the external circulation of the pump body.

Description

The shunt-type centrifugal pump

(1) technical field

The utility model relates to a kind of pump, particularly a kind of centrifugal pump.

(2) background technique

Centrifugal pump is widely used in the every field of the development of the national economy.His chief component comprises impeller, suction chamber, delivery chamber, seal arrangement, transmission device and drive motor etc.Existing centrifugal pump all is to manufacture and design according to traditional basic theory and water conservancy design method, and the centuries fluctuates.Exist problems such as working principle is unreasonable, efficient is low, complex structure, cost height.Present centrifugal pump moves under the state of rated flow also relatively steadily, can reach every operating index.But when under non-rated flow states such as small flow, moving, occur unavoidably the energy loss, do not reach problems such as lift such as required.

(3) summary of the invention

The purpose of this utility model is to provide a kind of working principle novelty, and is simple and reasonable for structure, the efficient height, and cost is low, shunt-type centrifugal pump easy to adjust.

The purpose of this utility model is achieved in that it comprises the pump housing, be installed in the impeller in the pump housing, the motor that output shaft links to each other with impeller, axle envelope between the motor output shaft and the pump housing, motor is fixed on the pump housing, described impeller is that the straight radial blade by equidistant distribution constitutes, in the pump housing, be provided with the branch platen, divide the rectangle variable section runner that has the equidistant distribution that separates dynamic and static pressure on the platen, between water inlet on the pump housing and water outlet, be provided with circulation loop, have control valve on the circulation loop.

The utility model can also comprise some structure characteristics like this:

1, described rectangle variable section runner sectional area from inlet to outlet enlarges gradually, and outlet is divergent contour.

2, the straight radial blade of described composition impeller is made up of linear leaf and short blade, and linear leaf and short blade are arranged at interval.

According to design concept of the present utility model, can design single suction, double suction, single-stage, twin-stage, vertical, horizontal, at a high speed, multi-form centrifugal pump such as low speed.

The utility model passes through the improvement to working principle, basic structure and the water conservancy design method of centrifugal pump, makes it to possess following advantage:

1, efficient height.Water conservancy advanced design, reliable.The efficient operating mode of can absolutely realizing ideal.The head coefficient height significantly reduces disc friction losses power.Diverter pump efficient is higher than the international standard efficient of similar conventional pump.

2, cost is low.Structure, technology are very simple, reasonable, generalization degree height.Especially significantly multistage pump, two-stage pump structure, technology have been simplified.Vertical Combination multi-stage diffluence pump compares with similar conventional pump, on average reduces cost about 50% (not comprising motor).

3, separate dynamic and static pressure, no axial force, no impeller eye end refluxes.

4, by the technological scheme of circulation loop and control valve is set, change circuit stock fluid power in the impeller into pump housing outer circulation.

(4) description of drawings

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

Fig. 2 is the A-A sectional view of Fig. 1.

(5) embodiment

For example the utility model is done description in more detail below in conjunction with accompanying drawing:

In conjunction with Fig. 1 and Fig. 2, the composition of shunt-type centrifugal pump comprises the pump housing 4, is installed in the impeller 3 in the pump housing, the motor 7 that output shaft links to each other with impeller, and the axle envelope 6 between the motor output shaft and the pump housing, motor is fixed on the pump housing.Impeller is that the straight radial blade by equidistant distribution constitutes.In the pump housing, be provided with branch platen 2, divide the rectangle variable section runner that has the equidistant distribution that separates dynamic and static pressure on the platen.Between water inlet on the pump housing and water outlet, be provided with circulation loop 1, have control valve 8 on the circulation loop.Described rectangle variable section runner sectional area from inlet to outlet enlarges gradually, and outlet is divergent contour.The straight radial blade of described composition impeller is made up of linear leaf and short blade, and linear leaf and short blade are arranged at interval.

Shunt-type centrifugal pump of the present utility model can be single suction, double suction, and single-stage, twin-stage are vertical, horizontal, at a high speed, multi-form centrifugal pump such as low speed.

Claims

1, a kind of shunt-type centrifugal pump, it comprises the pump housing, be installed in the impeller in the pump housing, the motor that output shaft links to each other with impeller, axle envelope between the motor output shaft and the pump housing, motor is fixed on the pump housing, it is characterized in that: described impeller is that the straight radial blade by equidistant distribution constitutes, in the pump housing, be provided with the branch platen, divide the rectangle variable section runner that has the equidistant distribution that separates dynamic and static pressure on the platen, between water inlet on the pump housing and water outlet, be provided with circulation loop, have control valve on the circulation loop.

2, shunt-type centrifugal pump according to claim 1 is characterized in that: described rectangle variable section runner sectional area from inlet to outlet enlarges gradually, and outlet is divergent contour.

3, shunt-type centrifugal pump according to claim 1 and 2, it is characterized in that: the straight radial blade of described composition impeller is made up of linear leaf and short blade, and linear leaf and short blade are arranged at interval.