CN102338122A

CN102338122A - Tangent pump

Info

Publication number: CN102338122A
Application number: CN2011102598567A
Authority: CN
Inventors: 柴立平; 何玉杰; 巫建波; 胡敬宁; 李强; 宫恩祥; 石海峡; 张军辉; 燕浩
Original assignee: HEFEI HUASHENG PUMPS VALVES CO Ltd
Current assignee: HEFEI HUASHENG PUMPS VALVES CO Ltd
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2012-02-01

Abstract

The invention discloses a tangent pump, which comprises a tangent pump, which is characterized in that: a bearing is arranged between a shaft body of a pump shaft outside an inlet end and an outlet end and a bearing seat, a sealing module is respectively arranged between the pump shaft and the outer side part of the inlet end and between the pump shaft and the outer side part of the outlet end, the shaft body between the inlet end and the outlet end is connected with an impeller through a key, a guide vane comprising a forward guide vane and a backward guide vane and a restriction middle section are arranged between the inlet end and the outlet end, the guide vane and the restriction middle section are sleeved on the impeller, at least a group of impellers and a group of guide vanes and restriction middle sections, which are matched with the impeller, are arranged, and a separation blade is arranged inside a flow passage between the guide vane and the restriction middle section and/or between the guide vane and an outlet section. The tangent pump has a simple structure, is convenient to operate, can effectively prevent the circulation of the fluid inside the flow passage from influencing the hydraulic loss, and can improve the efficiency of the multi-stage tangent pump.

Description

Partial emission pump

Technical field

The present invention relates to a kind of multistage partial emission pump, relate generally to the structure of runner.

Technical background

Partial emission pump has compact structure, is easy to processing, and the unsteady flow constant voltage by characteristics such as flow are obvious, is widely used in fields such as Aero-Space, petrochemical industry, pharmacy, urban construction.Because between the stator of traditional multistage partial emission pump and the stage casing and the runner between stator and the pump discharge be circulating runner; When fluid process circulatory flow, will produce hydraulic loss, thereby reduce multistage partial emission pump efficient, axial force is big; When impeller outer diameter is restricted; The lift of partial emission pump is on the low side, and middle piece housing is unfavorable for that line and dynamic balance accuracy are lower, and then has limited further developing of partial emission pump.

Summary of the invention

The object of the invention just provides a kind of multistage partial emission pump, and the hydraulic loss that produces when reducing fluid through circulatory flow is to improve multistage partial emission pump efficient.

For realizing above-mentioned purpose; The present invention has adopted technological scheme: a kind of partial emission pump; Comprise that pump shaft is provided with bearing between the axle body of entrance point, outlet end outer end and bearing support; Between pump shaft and entrance point, the outlet end outside left black box is set; On the axle body between entrance point, the outlet end, be connected with impeller by key, the stator and the constraint stage casing that contain guide vane and return guide vane are set between entrance point, outlet end, stator and constraint stage casing are set on the impeller; Described impeller and the stator peace treaty that is mated are provided with one group for intrafascicular section at least, it is characterized in that: between described stator and the line stage casing and/or in the runner between stator and the outlet section catch is set.

Catch is fixed between stator and the line stage casing and/or in the circulatory flow between stator and the pump discharge section and promptly constitutes acyclic runner.When fluid gets in the acyclic runner from gate vane channel; Fluid just can not circulate arbitrarily in runner; Because it is less and can not influence the radial force of pump that catch thickness takies Flow area for a short time; Fluid can not circulate and then reduce hydraulic loss in runner like this, reaches the purpose that improves multistage partial emission pump efficient.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the local enlarged diagram among Fig. 1;

Fig. 3 is the position of catch in stator and line stage casing;

Embodiment

As shown in Figure 1; A kind of partial emission pump; Comprise that pump shaft 10 is provided with bearing between the axle body of entrance point 20, outlet end 30 outer ends and bearing support, between pump shaft 10 and entrance point 20, outlet end 30 outside lefts black box is set, on the axle body between entrance point 20, the outlet end 30, be connected with impeller 50 by key; The stator 40 and the constraint stage casing 60 that contain guide vane 41 and return guide vane 42 are set between entrance point 20, outlet end 30; Stator 40 and constraint stage casing 60 are set on the impeller 50, and described impeller 50 and stator 40 peace treaties that are mated are provided with one group for intrafascicular section 60 at least, between described stator 40 and the line stage casing 60 and/or in the runner 70 between stator 40 and the outlet section 30 catch 80 are set; In conjunction with Fig. 3,4; So at least, on stage casing and outlet section, formed acyclic runner, just can effectively reduce hydraulic loss as long as constituted acyclic runner, the improvement of pump being flowed efficient has good effect.

In conjunction with Fig. 3,4, between described stator 40 and the line stage casing 60 and in the runner 70 between stator 40 and the outlet section 30 catch 80 is set all, the scheme that catch 80 is set like this can guarantee that the impeller 50 pump liquid of each grade all can reduce the loss of stream power.

As preferred version; Like Fig. 3, shown in 4, described catch 80 is arranged on the front of the flow liquid current drainage direction in the gate vane channel that is communicated with the place 43 of runner 70 and gate vane channel 43, and the flow liquids in the gate vane channel 43 are discharged in the runner 70 and are just stopped by catch 80 at once in other words; Guaranteed being communicated with of runner 70 and gate vane channel 43 like this; Help flow liquid again and can get into runner 70 and discharge, reduced flow liquid get into runner 70 and participate in circuit maybe, reduce the loss of stream power to greatest extent.

Preferred version when specifically being provided with is exactly that described catch 80 is fixedly installed on the housing of line stage casing 60 and outlet section 30, that is to say that catch 80 can finish in single-piece work; Be welded on afterwards, on the housing of line stage casing 60 and outlet section 30, because the housing of line stage casing 60 and outlet section 30 is external stability parts; Both are state of rest during work; Its volume is also bigger, can not influence its shape during welding, certainly also just can not influence the assembly precision of itself and other parts.

When fluid is in gate vane channel 43 entering runners 70; Fluid just can not circulate in runner, that is to say that catch 80 is arranged in the pump housing runner, the acyclic runner that made pump housing runner basic comprising; Thereby stoped the circulation of water in the pump housing; Simultaneously since catch 80 thickness to take Flow area for a short time less and can not influence the radial force of pump, fluid can not circulate and then reduce hydraulic loss in runner like this, reaches the purpose of the multistage partial emission pump efficient of raising.

Claims

1. partial emission pump; Comprising that pump shaft (10) is positioned between axle body and the bearing support of entrance point (20), outlet end (30) outer end is provided with bearing; Between pump shaft (10) and entrance point (20), outlet end (30) outside left black box is set; Be positioned on the axle body between entrance point (20), the outlet end (30) and be connected with impeller (50) by key; Be positioned at stator (40) and the constraint stage casing (60) that contains guide vane (41) and return guide vane (42) is set between entrance point (20), the outlet end (30); Stator (40) and constraint stage casing (60) are set on the impeller (50), and described impeller (50) and stator (40) peace treaty intrafascicular section (60) that is mated are provided with one group at least, it is characterized in that: between described stator (40) and line stage casing (60) and/or in the runner (70) between stator (40) and the outlet section (30) catch (80) is set.

2. partial emission pump according to claim 1 is characterized in that: between described stator (40) and line stage casing (60) and in the runner (70) between stator (40) and the outlet section (30) catch (80) is set all.

3. partial emission pump according to claim 1 is characterized in that: described catch (80) is arranged on the front of runner (70) and the interior flow liquid current drainage of the gate vane channel that is communicated with the place (43) direction of gate vane channel (43).

4. partial emission pump according to claim 1 and 2 is characterized in that: described catch (80) is fixedly installed on the housing of line stage casing (60) and outlet section (30).