CN2297571Y

CN2297571Y - Single stage centrifugal pump

Info

Publication number: CN2297571Y
Application number: CN 96248378
Authority: CN
Inventors: 刘希庚; 尹清禄; 魏保胜; 姜玉田; 卢殿忠; 赵俊亭; 庞胜利; 王福林
Original assignee: NINGJIN COUNTY MACHINERY PLANT SHANDONG PROV
Current assignee: NINGJIN COUNTY MACHINERY PLANT SHANDONG PROV
Priority date: 1996-11-19
Filing date: 1996-11-19
Publication date: 1998-11-18
Anticipated expiration: 2006-11-19

Abstract

The utility model relates to a single-stage centrifugal pump, which is basically composed of a pump shaft (1), a bearing body (2), a pump body (3), a blade (4) and an impeller (5). Under the condition that efficiency, cavitation, rotary speed and specification are determined, for increasing the lift and the flow rate of the utility model, the placing angle beta of an outlet of the blade of the utility model is selected between 70 DEG and 80 DEG; simultaneously, the diameter of the impeller (5) and the width of the blade (4) can be increased, and thus compared with centrifugal pump which is in IQ series and in identical specifications with the utility model, the flow rate and the lift of the utility model are increased greatly.

Description

Single stage centrifugal pump

The utility model relates to a kind of single stage centrifugal pump.

At present, the river, farmland is irritated regional employed single stage centrifugal pump and mostly is the serial centrifugal pump in IQ100～125, and this pump is made up of pump shaft, bearing support, the pump housing and impeller substantially.Under the situation that efficient, net positive suction head, rotating speed and specification are determined, in the using process, the defective that this pump ubiquity flow is little, lift is low is difficult to satisfy the needs of agricultural production.The user is badly in need of a kind of sigle-stage AC centrifugal pump, and this pump can keep under the constant substantially situation of existing IQ series centrifugal pump specification, weight, efficient, net positive suction head and rotating speed flow and lift being improved to some extent than the serial centrifugal pump of same specification IQ.

The purpose of this utility model, just provide a kind of sigle-stage AC centrifugal pump, this pump can keep under the constant substantially situation of existing IQ series centrifugal pump specification, weight, efficient, net positive suction head and rotating speed, and its flow and lift have raising largely than the serial centrifugal pump of same specification IQ.

For achieving the above object, the new technological scheme of this practicality is: the utility model is made up of pump shaft, bearing support, the pump housing, impeller and blade, pump shaft and bearing support are interference fit, pump shaft can freely dally on bearing support, blade-carrying impeller is fixed on the pump shaft afterbody, and the pump housing and bearing support are tightly connected and form the outer surface of centrifugal pump.Its blade exit laying angle is 70 °～80 °, and wherein most preferably the blade exit laying angle is 75 °.

The utility model is when importing and exporting diameter and be 100 millimeters, and also can adopt diameter is that 140～156 millimeters, width of blade are 40 millimeters impeller.

Compared with prior art, the utility model is owing to adopted bigger blade exit laying angle, make impeller in rotary course, increase the power that throws away of convection cell, again owing to adopted large diameter impeller and the bigger blade of width, the active force and the fluid course of impeller convection cell are further increased, thereby make lift of the present utility model and flow raising to a certain degree arranged than the serial centrifugal pump of same specification IQ.Test shows that after the employing technique scheme, the utility model improves 20%～70% than the serial centrifugal lift of pump of same specification IQ, and flow improves 30%～100%.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the plan view of a specific embodiment of the utility model, and Fig. 2 is the impeller plan view, and Fig. 3 is the impeller left view.

As shown in the figure, 1 pump shaft, 2 bearing suppories, 3 pump housings, 4 blades, 5 impellers, β blade exit laying angle.

As shown in Figure 1, pump shaft (1) and bearing support (2) are installed together, pump shaft (1) can freely be dallied, the impeller (5) of blade exit laying angle for (β) is fixed on the pump shaft (1), install the pump housing (3), can use.In the present embodiment, it is 100 millimeters that the utility model centrifugal pump is imported and exported diameter, selecting blade exit laying angle (β) is 75 °, and impeller (5) diameter is 140～156 millimeters, and blade (4) width is 40 millimeters, this embodiment in actual applications, through measuring and calculating, its flow is 160 cubic metres/hour, 33 meters of lifts, compare with IQ100～125 centrifugal pumps, its flow and lift improve 100% and 70% respectively.

Claims

1, a kind of single stage centrifugal pump, form by pump shaft (1), bearing support (2), the pump housing (3), blade (4) and impeller (5), pump shaft (1) is an interference fit with bearing support (2), pump shaft (1) can be gone up at bearing support (2) and freely dally, the impeller (5) that has blade (4) is fixed on pump shaft (1) afterbody, the pump housing (3) is tightly connected with bearing support (2) and forms the outer surface of centrifugal pump, it is characterized in that blade exit laying angle (β) is 70 °～80 ° a impeller (5).

2, single stage centrifugal pump according to claim 1 is characterized in that blade exit laying angle (β) is 75 ° a impeller (5).

3, single stage centrifugal pump according to claim 1 and 2 is characterized in that: when it was imported and exported diameter and is 100 millimeters, said impeller (5) diameter was that 140～156 millimeters, blade (4) width are 40 millimeters.