CN202108778U

CN202108778U - Liquid conveying pump with a suspension type impeller

Info

Publication number: CN202108778U
Application number: CN2011202121356U
Authority: CN
Inventors: 汪相武; 栗连库
Original assignee: BEIJING YUWANG PUMP CO LTD
Current assignee: BEIJING YUWANG PUMP CO LTD
Priority date: 2011-06-22
Filing date: 2011-06-22
Publication date: 2012-01-11
Anticipated expiration: 2021-06-22

Abstract

The utility model relates to a liquid conveying pump with a suspension type impeller, belonging to the technical field of the liquid conveying machine. An impeller (3) with a pump axle (2) partly or wholly shrinks away from a pumping chamber channel (4), the impeller (3) is a half-open type structure, a main impeller (7) is arranged on the main surface of a back cover plate (6) and a '+'shaped sub-impeller (8) is arranged on the back surface of the back cover plate. The liquid conveying pump has features of good non-blockage performance, strong through capacity of solid particles and/or fibers, small wear on the impeller (3), simple structure, easy manufacture process, stable operation and long operation. The liquid conveying pump is useful for the submersible pumps or the ground pumps according to different mated electric machines life, widely suitable for the technical field of conveying the liquid containing the solid and liquid in various apartments and also useful for conveying the liquid capable of easily resolving the gas out from the liquid.

Description

A kind of infusion pump with floated impeller

Technical field

The invention belongs to the liquid conveying machinery technical field, relate to a kind of infusion pump with floated impeller.

Background technique

In the existing technology, centrifugal pump is the widest a kind of pump of liquid delivery application in commercial production, and its impeller is a centrifugal structure; Open type, semi-open type, enclosed are arranged, and being used to carry the impeller of the transh pump class centrifugal pump of the suspension that contains solid particle and/or fiber is open type or semi-open type, and its deficiency is; Take place easily to stop up and/or twine, influence the normal operation of pump, can make motor overload in the time of seriously and burn; And efficient is low, simultaneously, and because of the wearing and tearing in being transferred of the solid particle in the suspension and/or fiber to the blade and the pump housing of impeller; Be prone to cause the matching gap between the two to continue to increase, thereby cause the efficient of pump seriously to descend.

Summary of the invention

The technical problem that solves:

A kind of infusion pump with floated impeller is provided; With regard to working principle; In fact also belong to the centrifugal pump class; Partly or entirely contract tripping hydroecium runner-be the spiral case passage in the pump housing inner chamber of its impeller can overcome the deficiency that exists in the existing technology, and being transferred most of solid particle and/or fiber in the suspension can be without impeller, do not contact with the blade of impeller and the directly outflow of the spiral case passage from the pump housing inner chamber of no impeller.Therefore, do not exist easy generation to stop up and/or twine, the blade of the impeller that not existing weares and teares causes and the gap between the pump housing continue to increase the serious problem that descends of the efficient that causes pump; Simple in structure, be prone to make.

The technological scheme that adopts:

A kind of infusion pump with floated impeller comprises the pump housing of carrying liqs inlet/outlet, and is supporting and be contained in the impeller on the pump shaft with pump housing inner chamber, it is characterized in that: partly or entirely contract tripping hydroecium runner-be the spiral case passage in the pump housing inner chamber of impeller; Impeller is whole semi-open type structure that process or that be welded; The back shroud that has sleeve body and connect as one with it; Connect as one with the interarea of back shroud is rectilinear; Again while and the primary blades that sleeve body axially connects as one, also has the back blades that is cross distribution on the back side of back shroud.

Beneficial effect:

The tripping hydroecium runner because impeller partly or entirely contracts; Therefore; No plugging performance is good, and is strong to the passing capacity of solid particle in the liquid and/or fiber, and most of solid particle and/or fiber can be without impeller, do not contact with primary blades and directly the spiral case passage from the bladeless pump intracoelomic cavity flow out; Therefore, do not exist the primary blades of the impeller that causes because of wearing and tearing and the gap between the pump housing to continue to increase the serious problem that descends of the efficient that causes pump; Simple in structure, the easy manufacturing operated steadily, and service life is long; Simultaneously, because the phenomenon of liquid be difficult for to take place to cause can't sucting in the pump housing because of " vapour is tied up ", therefore; Can not only contain the solid-liquid two-phase flow field adaptable across the multidisciplinary conveying of conglomerate; And be applicable to the liquid of carrying the legibility product gas, like underground petroleum etc., can be used for submersible pump or ground type pump according to equipped motor difference.

Description of drawings

Fig. 1, Overall Group's assembling structure schematic representation;

The plan view of Fig. 2, impeller;

Fig. 3, press the A-A sectional view shown in Fig. 2.

Embodiment

In conjunction with further explanation in detail of accompanying drawing; Among the figure, 1 is shown the pump housing, and arrow is shown the sense of rotation of impeller among the figure.

Shown in Fig. 1～3, be contained in impeller 3 on the pump shaft 2 tripping hydroecium runner 4 that partly or entirely contracts---be the spiral case passage in the pump housing inner chamber; Impeller 3 is whole semi-open type structure that process or that assembly welding forms; The back shroud 6 that has sleeve body 5 and connect as one with it; Connect as one with the interarea of back shroud 6 is rectilinear; Again while and the primary blades 7 that sleeve body 5 axially connects as one, also has the back blades 8 that is crossing distribution on the back side of back shroud 6; Primary blades 7 is 8～16 and is uniformly distributed with, primary blades 7 with become the α angle through its tangent plane with the junction line of the periphery of sleeve body 5, the α angle is 20～40 degree, primary blades 7 also has the limit wing 9 at folding β angle in the sense of rotation of impeller 3, the β angle is 10～20 degree; The external diameter of primary blades 7 is D; Its down distance one of the downside of rotation plane separation pumping chamber runner 4 be that the contract distance of tripping hydroecium runner 4 of impeller 3 is S; S equals 0.25～0.35D, and the effective height of primary blades is h, and h equals 0.2～0.25D; The last plane of rotation of back blades 8 is δ apart from the gap of the axle head seat board 10 of the pump housing 1, and δ is 0.5～1.0mm.

Impeller 3 the increasing of tripping hydroecium runner 4 that contract apart from S, the efficient of pump reduces, but the passing capacity of solid particle and/or fiber improves.

Said " contract and leave " is meant that impeller 3 upwards deflects away from pumping chamber runner 4, thereby makes pumping chamber runner 4 no impeller space occur.

Claims

1. infusion pump with floated impeller comprises the pump housing of carrying liqs inlet/outlet, it is characterized in that with the supporting impeller that pump shaft is housed of pump housing inner chamber:

Partly or entirely contract tripping hydroecium runner-be the spiral case passage in the pump housing inner chamber of the impeller that pump shaft is housed; Impeller is whole semi-open type structure that process or that be welded; The back shroud that has sleeve body and connect as one with it; Connect as one with the interarea of back shroud is rectilinear; Again while and the primary blades that sleeve body axially connects as one, also has the back blades that is cross distribution on the back side of back shroud.

2. a kind of infusion pump with floated impeller according to claim 1 is characterized in that:

Primary blades (7) is 8～16 and is uniformly distributed with; Primary blades (7) becomes the α angle with the tangent plane of the junction line of periphery through its same sleeve body (5); The α angle is 20～40 degree, and primary blades (7) also has the limit wing (9) at folding β angle in the sense of rotation of impeller (3), and the β angle is 10～20 degree; The external diameter of primary blades (7) is D; Its down the contract distance of tripping hydroecium runner (4) of the distance of the downside of rotation plane separation pumping chamber runner (4)-be impeller (3) be S; S equals 0.25～0.35D, and the effective height of primary blades is h, and h equals 0.2～0.25D; The last plane of rotation of back blades (8) is δ apart from the gap of the axle head seat board (10) of the pump housing (1), and δ is 0.5～1.0mm.