CN103629161A

CN103629161A - Second-level cantilever type small flow centrifugal pump

Info

Publication number: CN103629161A
Application number: CN201310697486.4A
Authority: CN
Inventors: 左传玺; 左文英; 徐秀生
Original assignee: LIAONING CHANGZHI PUMP Co Ltd
Current assignee: LIAONING CHANGZHI PUMP Co Ltd
Priority date: 2013-12-17
Filing date: 2013-12-17
Publication date: 2014-03-12

Abstract

The invention belongs to the field of centrifugal pump devices, and particularly relates to a second-level cantilever type small flow centrifugal pump. The second-level cantilever type small flow centrifugal pump comprises a pump body, wherein the front end of the pump body is provided with a front pump cover, and the rear end of the pump body is connected with a motor through a bracket; the pump body is internally horizontally provided with a pump shaft, and a motor shaft is sleeved with the pump shaft; the pump shaft is axially provided with a first-level impeller and a second-level impeller, the pump cover is internally provided with a suction inlet which corresponds to the pump shaft, and the suction inlet is internally provided with an inducer; a guiding body is arranged between the first-level impeller and the second-level impeller, the inducer and the guiding body are both arranged on the pump shaft, and the periphery of the pump body is provided with a discharge opening. The second-level cantilever type small flow centrifugal pump provided by the invention has the advantages that the structure is simple, the manufacture is easy, a flow state is stable, and the pressure is constant without fluctuation; a condition that a working condition is stable is guaranteed, and the flow is exact; due to the universality and interchangeability design, the spare part storing and managing cost and the comprehensive operating cost of the pump are reduced, and the second-level cantilever type small flow centrifugal pump is a novel replacing product in the field of small flow centrifugal pumps based on unique durability, reliability and economy.

Description

Secondary cantilever type small flow centrifugal pump

Technical field

The present invention relates to a kind of secondary cantilever type small flow centrifugal pump, belong to centrifugal pump device field.

Background technique

In industries such as chemistry, petrochemical industry, oil refinery, Coal Chemical Industry, power station, non-ferrous metal, paper-making industry, pharmacy industry, food industry, sugar industry, steel works, spent acid processing, plumbing, town water supply, further processing of grains, carry not solids-laden fluid, conventionally need to use high-lift centrifugal pump, but the centrifugal pump of use only has a water outlet conventionally, and the relative position between water intake and water outlet is single, bad adaptability, and complex structure, affects the stability of fluid.

Summary of the invention

The technical problem to be solved in the present invention is: provides a kind of rational in infrastructure, can adapt to various working, and the mobile stable secondary cantilever type small flow centrifugal pump of fluid.

Secondary cantilever type small flow centrifugal pump of the present invention, comprise the pump housing, pump housing front end arranges front pump cover, and rear end connects motor by bracket, pump shaft is laterally installed in the pump housing, pump shaft is sleeved on motor shaft, and first stage impeller and sencond stage impeller are axially installed on pump shaft, and corresponding pump shaft arranges suction port in front pump cover, inducer is installed in suction port, between first stage impeller and sencond stage impeller, deflector is installed, inducer and deflector are installed on pump shaft, and pump housing periphery is provided with discharge opening.

Between the pump housing and motor, by intermediate bracket, complete, Placement is simple, easily operation; Chopped-off head and sencond stage impeller runner can adopt complete mechanical processing, and the method that it welds after completing again guarantees that product performance are stable, guarantee under minimum flow rate working conditions fluid stable, constant pressure ripple disable; The outer pump housing is forge piece, and discharge opening flange welding is on the pump housing; Deflector is fixed in the pump housing, and suction port welds or is cast on pump cover; Arranging of deflector can make the flow direction of seal flush liquid flow by changing into around axle vertically, and Seal cage can configure various fillers and mechanical seal, is applicable to the conveying of various media; Fluid level enters, and first through inducer, then enters between first stage impeller and sencond stage impeller, finally from discharge opening position, flows out, and this kind of structure can be determined the position of discharge opening on the pump housing according to actual conditions, flexible structure, and applicability is strong.

Described discharge opening axis is parallel, vertical with suction port axis place horizontal plane or be 45 degree angles.Discharge opening position is flexible, all can make fluid stable flow out.

Described discharge opening is set to 1 or 2.Can according to concrete operating mode choice for use one or two.

Described deflector is scroll casing type deflector.Water conservancy diversion is effective, fluid is flowed in the pump housing stable, is convenient to the liquid of conveying to become Vertical direction from substantially horizontal.

The invention has the beneficial effects as follows:

Simple in structure, easily manufacture fluid stable, constant pressure ripple disable; Assurance operating mode is stable, and flow is accurate; Versatility and interchangeability design, not only reduced spare part and stored and administration expenses, and reduced the integrated operation cost of pump, makes it with its distinctive serviceability, reliability, Economy, become the novel substitute products in small flow centrifugal pump field.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the layout schematic diagram of discharge opening in Fig. 1.

In figure: 1, sencond stage impeller 2, the pump housing 3, discharge opening 4, bracket 5, motor 6, motor shaft 7, pump shaft 8, suction port 9, inducer 10, first stage impeller 11, deflector 12, front pump cover.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described further:

As shown in Fig. 1～Fig. 2, secondary cantilever type small flow centrifugal pump of the present invention, comprise the pump housing 2, the pump housing 2 front ends arrange front pump cover 12, rear end connects motor 5 by bracket 4, the interior horizontal installation pump shaft 7 of the pump housing 2, pump shaft 7 is sleeved on motor shaft 6, first stage impeller 10 and sencond stage impeller 1 are axially installed on pump shaft 7, corresponding pump shaft 7 is at the interior suction port 8 that arranges of front pump cover 12, and the interior installation inducer 9 of suction port 8, installs deflector 11 between first stage impeller 10 and sencond stage impeller 1, inducer 9 and deflector 11 are installed on pump shaft 7, and the pump housing 2 peripheries are provided with discharge opening 3.Discharge opening 3 axis are parallel, vertical with suction port 8 axis place horizontal planes or be 45 degree angles.Discharge opening 3 is set to 1.Deflector 11 is scroll casing type deflector.

Discharge opening 3 axis are parallel with suction port 8 axis place horizontal planes is that discharge opening is positioned at and is positioned at the pump housing 2 left sides or right side shown in Fig. 2; Discharge opening 3 axis are vertical with suction port 8 axis place horizontal planes is that discharge opening is positioned at and is positioned at the pump housing 2 tops or bottom shown in Fig. 2; It is the position that discharge opening is positioned at the upper left corner that is positioned at the pump housing 2, the upper right corner, the lower left corner or the lower right corner shown in Fig. 2 that discharge opening 3 axis and suction port 8 axis place horizontal planes are 45 degree angles.

During work, starting electrical machinery 5, motor shaft 6 drives pump shafts 7 to rotate, and pump shaft 7 drives chopped-off heads and sencond stage impeller to rotate, and deflector 11 rotates, and the liquid of transmission is flowed into from suction port 8, through chopped-off head and sencond stage impeller, drives and vertically from discharge opening 3, spues.

Claims

1. a secondary cantilever type small flow centrifugal pump, it is characterized in that: comprise the pump housing (2), the pump housing (2) front end arranges front pump cover (12), rear end connects motor (5) by bracket (4), pump shaft (7) is laterally installed in the pump housing (2), pump shaft (7) is sleeved on motor shaft (6), upper first stage impeller (10) and the sencond stage impeller (1) axially installed of pump shaft (7), corresponding pump shaft (7) arranges suction port (8) in front pump cover (12), inducer (9) is installed in suction port (8), between first stage impeller (10) and sencond stage impeller (1), deflector (11) is installed, inducer (9) and deflector (11) are installed on pump shaft (7), the pump housing (2) periphery is provided with discharge opening (3).

2. secondary cantilever type small flow centrifugal pump according to claim 1, is characterized in that: discharge opening (3) axis is parallel, vertical with suction port (8) axis place horizontal plane or be 45 degree angles.

3. secondary cantilever type small flow centrifugal pump according to claim 1 and 2, is characterized in that: discharge opening (3) is set to 1 or 2.

4. secondary cantilever type small flow centrifugal pump according to claim 3, is characterized in that: deflector (11) is scroll casing type deflector.