CN2846821Y

CN2846821Y - Single suction double flow path semi open semi close type impeller

Info

Publication number: CN2846821Y
Application number: CN 200520085164
Authority: CN
Inventors: 曹大清
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-10
Filing date: 2005-07-10
Publication date: 2006-12-13
Anticipated expiration: 2015-07-10

Abstract

The utility model provides a single suction double-flow path semi-opened and semi-closed type impeller, which belongs to the impeller on a pump. The utility model is provided with an impeller body, the middle part of which is provided with a shaft hole, wherein a circular back wall plate is arranged on the impeller body, and a circular front wall plate is arranged in the front of the back wall plate; back vanes are fixed between the back wall plate and the front wall plate; the front side of the front wall plate is fixed with front vanes; the back vanes and the front vanes are distributed in a stagger way; the outlet edge of each vane is inclined to a shaft line; the cross section of each wall plate is in an arc. The impeller is in a double-flow path semi-opened and semi-closed type structure, and can furthest lower the outflow impact of slurry and improve the quality and the stability of paper production in the way that the outlet edge of each vane is inclined, single flow path is changed into double-flow path, and the back vanes and the front vanes are distributed in the stagger way.

Description

The half-open single shrouded wheel of single-suction double flow path

Technical field

The utility model provides a kind of impeller, the impeller on especially a kind of low pulse starching pump.

Background technique

At present, the low pulse starching pump of using in paper production all is a double suction middle open type pump.This pump is fragile, and floor space is big.The impeller that uses on this pump adopts single channel open type, semi-open type or double shrouded wheel.The impeller of this structure is when carrying the slurry of low density, and the stream that goes out of slurries impacts inhomogeneously, and it is excessive promptly to pulse, and causes the paper of being produced in uneven thickness, second-rate, and working efficiency is also lower.

Summary of the invention

Technical problem to be solved in the utility model is, provides a kind of single-suction double flow path half-open single shrouded wheel, and after it was used on the low pulse starching pump, the stream that goes out that can reduce pump impacted, and improves the quality of the paper of being produced.

The utility model is to realize like this, the half-open single shrouded wheel of single-suction double flow path, it has impeller body, and there is axis hole at the middle part of impeller body, and circular rear wall plate is arranged above the impeller body, there is circular front panel in rear wall plate the place ahead, be fixed with rear blade between rear wall plate and the front panel, the front panel front side is fixed with front vane, and stagger arrangement distributes between rear blade and the front vane, and the outlet limit of each blade favours axis, and the cross section of each wallboard is curved.

Adopt the impeller of said structure, be double flow channel, half-open half-closed structure, inclination, single channel by exit edge of blade changes double flow channel into, the interlobate stagger arrangement in front and back distributes, and the stream that goes out that has reduced slurries to greatest extent impacts, and improved quality and stability that paper is produced.

Description of drawings

Fig. 1 is the plan view of the utility model structure.

Fig. 2 is the left view of Fig. 1.

Among the figure, 1-front vane, 2-front panel, 3-rear blade, 4-rear wall plate, 5-impeller body, 6-sub-propeller, 7-axis hole.

Embodiment

The embodiment who provides below in conjunction with accompanying drawing illustrates structure of the present utility model and working principle.

As shown in drawings, the half-open single shrouded wheel of the single-suction double flow path of the utility model, it has impeller body (5), and there is axis hole (7) at the middle part of impeller body, and circular rear wall plate (4) is arranged on described impeller body, there is circular front panel (2) in rear wall plate the place ahead, be fixed with rear blade (3) between rear wall plate and the front panel, the front panel front side is fixed with front vane (1), and stagger arrangement distributes between rear blade and the front vane, and the outlet limit of each blade favours axis, and the cross section of each wallboard is curved.

Each wallboard profile is for being the circle in the center of circle with the axle center.On its cross section, the radian of rear wall plate is greater than front panel.The inlet side of blade also is the inclination form, and each blade has big torsion.

Front panel, rear wall plate and rear blade have surrounded the runner of a circle sealing, and front panel and front vane have surrounded the runner of a circle open type, have promptly formed the half-open half-closed structure of double flow channel.During work, the runner of open type constitutes complete runner with the pump housing.

The mobile of liquid is actually a pulsed flow in the low pulse starching pump, excessively will influence paper quality but pulse.The outlet limit of blade is designed to favour axis, and the pressure pulsation that can reduce to cause when exit edge of blade turns over cut water on the pump housing stream and impacts, and this for the less pump efficiency fruit of flow obviously.When slurries entered impeller unevenly, because two runners are arranged, and the blade stagger arrangement in two runners distributes, and greatly reduces out stream and impacts, and reduced pressure pulsation, and was also very obvious for the pump efficiency fruit that flow is bigger.

During use, impeller is installed in the pump housing, and is installed on the pump shaft by axis hole, rotates under the drive of pump shaft.Slurries enter runner from impeller the place ahead, flow out from the outlet limit.

Rear side at described impeller body (5) has sub-propeller (6).Sub-propeller is near pump cover.Sub-propeller plays good action to sealing during with wheel rotation, makes shaft sealing only bear stable low pressure rather than whole pump pressure, and it is low that chance is stopped up in sealing, long service life.

Obviously, except that low pulse starching pump, the impeller of the utility model also can be used on other pumps that are fit to.

Claims

1, the half-open single shrouded wheel of single-suction double flow path, it has impeller body (5), there is axis hole (7) at the middle part of impeller body, it is characterized in that, circular rear wall plate (4) is arranged on described impeller body (5), there is circular front panel (2) in rear wall plate the place ahead, be fixed with rear blade (3) between rear wall plate and the front panel, the front panel front side is fixed with front vane (1), and stagger arrangement distributes between rear blade and the front vane, and the outlet limit of each blade favours axis, and the cross section of each wallboard is curved.

2, the two double shrouded wheels of single-suction double flow path as claimed in claim 1 is characterized in that, at the rear side of described impeller body (5) sub-propeller (6) are arranged.