CN2627248Y

CN2627248Y - Two-stage single suction vertical centrifugal pump

Info

Publication number: CN2627248Y
Application number: CN 03231802
Authority: CN
Inventors: 李建飞; 方坤才
Original assignee: Shanghai Kalee Pump Group Co ltd
Priority date: 2003-06-02
Filing date: 2003-06-02
Publication date: 2004-07-21
Anticipated expiration: 2013-06-02

Abstract

A two-stage single-suction vertical centrifugal pump is provided, the utility model relates to a vertical centrifugal pump in plumbing equipment and provides a vertical centrifugal pump with higher delivery head and smooth performance. The utility model adopts the vertical centrifugal pump driven by an electric motor, the centrifugal pump consists of a pump body, a pump shaft, as well as impellers, which is characterized in that the pump body is provided with two impellers arranged with positive and negative directions, a baffle plate is arranged between the two impellers to divide the pump body cavity into an upper part and a lower part, the baffle plate center is provided with a water bearing, and the pump chamber export of the first-stage impeller and the pump chamber export of the second-stage impeller are arranged with 180 DEG. The utility model is applied to lifting and delivering fluid.

Description

The double-stage, single absorption vertical centrifugal pump

Technical field:

The utility model relates to the vertical centrifugal pump in the plumbing equipment.

Background technique

A kind of vertical centrifugal pump by driven by motor is arranged in the prior art, and centrifugal pump mainly is made up of the pump housing, pump shaft and impeller.The pump housing is by upper and lower two sections combinations, and the pump housing one side has suction inlet, pump housing opposite side that outlet is arranged, and pump cover is arranged above the pump housing, and there is axis hole in pump cover central authorities, between axis hole and the pump shaft mechanical seal are arranged, and pump housing inner chamber is like the volute chamber shape; Pump shaft is a multidiameter shaft, can adopt shaft coupling to be connected with motor shaft, and impeller is contained in the pump shaft front portion, and compresses at the terminal loading nut of pump shaft, and impeller also can directly be contained in the motor output shaft end.During the centrifugal pump running, flow of liquid has absorbed the impeller energy delivered through pump chamber, has improved hydraulic pressure, can be used for promoting and carrying liquid.

The model utility content

The utility model technical issues that need to address provide that a kind of lift is higher, vertical centrifugal pump stably turns round.

The technical solution of the utility model adopts the vertical centrifugal pump of driven by motor, centrifugal pump is made up of the pump housing, pump shaft and impeller, it is characterized in that being provided with in the pump housing two impellers that become forward and reverse layout, there is dividing plate that pump housing inner chamber is divided into upper and lower two parts between two impellers, there is submerged bearing in dividing plate central authorities, and the pump chamber outlet of first order impeller becomes 180 ° of layouts with the pump chamber exit position of second level impeller.

The utility model is owing to be provided with two impellers, can significantly improve lift, two impellers become forward and reverse layout can eliminate axial force, the pump chamber outlet of first order impeller becomes 180 ° of layouts can eliminate radial force with the pump chamber exit position of second level impeller, and dividing plate central authorities have submerged bearing to help to move steadily, reduce the technique effect that leaks.

Description of drawings

Fig. 1 represents the utility model schematic representation of adopting shaft coupling to be connected with motor output shaft;

Fig. 2 is the junction plane of hypomere on the pump housing, and the pump chamber outlet of expression the utility model first order impeller exports into 180 ° of layouts with the pump chamber of second level impeller.

Embodiment

Implement concrete mode of the present utility model below in conjunction with description of drawings: what accompanying drawing 1 was represented is the vertical centrifugal pump that motor 1 drives, centrifugal pump mainly is made up of the pump housing 2, pump shaft 3 and

impeller

4,5, pump housing inner chamber is like the scroll casing shape chamber, the pump housing one side is established suction inlet 6, pump housing opposite side sets out mouth 9, pump housing top armored pump lid 7; When pump shaft was connected with motor output shaft by shaft coupling, pump cover 7 had the support that is connected with the motor land, installing mechanical sealing element 8 on the pump cover 7 of belt supporting frame; When motor output shaft was directly installed impeller, pump cover was made land and is connected with the land of motor; Axis hole installing mechanical sealing element 8 on the pump cover 7; Pump shaft 3 is multidiameter shafts, adopts shaft coupling 10 to be connected with motor shaft 11, and

impeller

4,5 is contained in pump shaft 3 front portions, and compresses at the terminal loading nut of pump shaft; Two

impellers

4,5 one-tenth forward and reverse layouts are established dividing plate 12 in the pump housing between two impellers, and dividing plate 12 is divided into former and later two parts with pump housing inner chamber, and dividing plate 12 central authorities establish submerged bearing 14; The pump chamber outlet 16 of accompanying drawing 2 expression first order impellers exports 18 positions on the pump chamber bottom and the pump chamber top of second level impeller and becomes 180 ° of layouts.

Claims

The double-stage, single absorption vertical centrifugal pump is by driven by motor, centrifugal pump is made up of the pump housing, pump shaft and impeller, it is characterized in that being provided with in the pump housing two impellers that become forward and reverse layout, there is dividing plate that pump housing inner chamber is divided into upper and lower two parts between two impellers, there is submerged bearing in dividing plate central authorities, and the pump chamber outlet of first order impeller becomes 180 ° of layouts with the pump chamber exit position of second level impeller.