CN207568929U - A kind of blade wheel structure of sewage pump - Google Patents

Abstract

The utility model is related to the technical fields of pump, disclose a kind of blade wheel structure of sewage pump, and including impeller and cut ring, impeller includes back shroud, axis body and blade, and blade is in log spiral sigmoid；Hole among cut ring rotates inside for the blade of impeller, the one side of cut ring is the curved surface in round and smooth indent from outer circle to inner circle, it is offered in the one side of the cut ring and in log spiral sigmoid and passes to outer ring surface from the inner ring surface of cut ring with the matched groove of the blade of impeller, groove.The utility model uniform force, the failure rate of sewage pump at work is significantly reduced, is safeguarding that labour cost is surging instantly, the maintenance cost of equipment can be reduced, there is considerable economic benefit for a long time, can also avoid increasing energy consumption since water pump blocking causes operational efficiency to decline.

Description

A kind of blade wheel structure of sewage pump

Technical field

The utility model is related to pump technical fields, the more particularly to blade wheel structure in pump.

Background technology

In terms of the blade wheel structure of Non-blinding pump, single channel, binary channels, spiral-flow type, semi-open type, spiral is developed after first Etc. the blade wheel structure product of a variety of styles, the product of single channel blade wheel structure is mainly for delivery of containing big solid in these products Particle and a large amount of long stapled sanitary sewages, the product of binary channels blade wheel structure is mainly for delivery of containing solid particle and containing A small amount of long stapled sewage, the product of spiral-flow type blade wheel structure is mainly for delivery of containing big solid particle and containing a large amount of long The sewage of fiber, the product of half-opened impeller structure is mainly for delivery of containing a large amount of long stapled sewage, screw impeller knot The product of structure is also used as the lossless conveying of food mainly for delivery of the sewage containing solid particle and fiber.But it is Reaching, which prevents the fiber in pumped (conveying) medium from winding impeller, causes pump to block, it is necessary to according to the situation of impurity in pumped (conveying) medium correct Suitable impeller of pump flow passage structure is selected to reach best transfer efficiency in ground, it has been investigated that using cutting type impeller or single-pass Road impeller can effectively prevent blocking, but single channel impeller due to operation when unbalance stress, bore is usually in the pump of below 300mm Upper use, and stress is more uniform during the operation of cutting type impeller, bore is unrestricted only, therefore improves existing blade wheel structure and innovation and creation A kind of novel, cutting type blade wheel structure.

Utility model content

The fiber that the utility model is directed in pumped (conveying) medium easily winds the problem of impeller causes pump to block, and provides a kind of impeller With the blade wheel structure of sewage pump of the wear ring with cutting.

The purpose of this utility model can be realized by following technical proposals：A kind of blade wheel structure of sewage pump, including Impeller and cut ring；

The impeller includes back shroud, axis body and blade, and back shroud is in the form of annular discs, and the end face center of back shroud is erect admittedly Dead axle body, one end and the back shroud of axis body are fixed, and the other end of axis body is vacantly set, and the other end center of back shroud, which is equipped with, to be led to Axis hole in axis body, blade are stood on the end face of the back shroud, and one end of blade is connect with axis body, the other end of blade Setting outward, blade are in log spiral sigmoid；

Hole among the cut ring rotates inside for the blade of impeller, and multiple installations are circumferentially evenly equipped in cut ring Hole, the one side of cut ring is the curved surface in round and smooth indent from outer circle to inner circle so that the thickness of the inner ring of cut ring is less than outer ring Thickness, be further opened in the one side of the cut ring with the matched groove of the blade of impeller, groove is curved in logarithmic spiral threadiness It is bent and pass to outer ring surface from the inner ring surface of cut ring.

Further, the quantity of the blade and groove is two, and two panels blade is in 180 ° relative to the axis of axis body It is arranged symmetrically, two grooves are arranged symmetrically relative to the axis of cut ring in 180 °.

Further, the shape of the blade is：One sheet body is using one end direction of the axis body as starting, along axis The other end direction of the axis of body towards the axis body is threadingly advanced, while the distance of sheet body to the axis of axis body is in geometry Series is incremented by, the thickness of sheet body also in being gradually incremented by, then sheet body where one end end face of the axis body plane and it is described after The middle section that the two planes of plane where the end face of cover board are cut is blade.

Further, the shape of groove is：One groove body is using the inner circle direction of the one side of the cut ring as starting, edge The outer circle direction for axis towards the one side of the cut ring of cut ring is threadingly advanced, while groove body is to the axis of cut ring The distance of line is incremented by geometric progression, and the width of groove is also in gradually incremental.

The beneficial effects of the utility model：The groove on blade and cut ring on impeller is curved in logarithmic spiral threadiness Long fibre in pumped (conveying) medium can be torn and shortened by song, blade and fit depressions and the cutting mouth for forming logarithmic spiral structure, And the dirt after cutting can be pressed into the outside that impeller is transferred in groove by blade.Entire blade wheel structure uniform force, significantly The failure rate of sewage pump at work is reduced, is safeguarding that labour cost is surging instantly, the maintenance cost of equipment can be reduced, There is considerable economic benefit for a long time, can also avoid disappearing since water pump blocking causes operational efficiency to decline the increase energy Consumption.In real life, each pumping plant of Bai Long ports sewage transport branch company (pumping plants such as Shanghai east 1 station, No. 2 stations, Dezhou, Yun Lian) dirt Water increases and largely the rubbish such as cotton-wool, cloth, polybag will note impeller and chute card after 3 months, cause conveying nothing Flow, electric current are infinitely great, it is very big that motor is damaged, for the sewage pump of PW, PLW series of main pumping plant model, by The impeller in portion and the blade wheel structure of wear ring improvement cost utility model, achieve good effect.

Description of the drawings

Fig. 1 is the structure diagram of impeller.

Fig. 2 is the structure diagram of cut ring.

Fig. 3 is the schematic top plan view of cut ring.

Part numbers are as follows in figure：

1 impeller, 11 back shrouds, 12 axis bodies, 13 blades, 2 cut ring, 21 mounting holes, 22 curved surfaces, 23 grooves.

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, becomes apparent from those skilled in the art How ground understanding puts into practice the utility model.Although describing the utility model with reference to its preferred embodiment, these Embodiment only illustrates rather than limitation the scope of the utility model.

A kind of blade wheel structure of sewage pump, including impeller 1 and cut ring 2.

Referring to Fig. 1, the impeller 1 is half-opened impeller, and impeller 1 includes back shroud 11, axis body 12 and blade 13.Back shroud 11 is in the form of annular discs, and fixed axis body 12 is erect at the end face center of back shroud 11, and one end and the back shroud 11 of axis body 12 are fixed, axis body 12 other end is vacantly set, and the other end center of back shroud 11 is equipped with the axis hole passed in axis body 12, the axis hole be used for The shaft connection of sewage pump.The quantity of blade 13 is two panels, which stands on the end face of the back shroud 11 And two panels blade 13 is arranged symmetrically relative to the axis of axis body 12 in 180 °, one end of every blade 13 is connect with axis body 12, leaf The other end of piece 13 is set outward, wherein, every blade 13 is in log spiral sigmoid, the shape of blade 13：One sheet body Using one end direction of the axis body 12 as starting, along the axis of axis body 12 towards the other end place side of the axis body 12 To being threadingly advanced, while the distance of sheet body to the axis of axis body 12 is incremented by geometric progression, the thickness of sheet body is also incremented by gradual, Then plane where sheet body end face of plane and the back shroud 11 where one end end face of the axis body 12 the two put down The middle section that face is cut is blade 13.

Referring to Fig. 2 and Fig. 3, the cut ring 2 is original stainless steel wear ring, and the hole of 2 centre of cut ring is used for leaf The blade 13 of wheel 1 rotates inside, is set on the face of cut ring 2 there are four the uniformly distributed mounting hole 21 in week side, mounting hole 21 is used to cut Ring 2 is cut to be fixedly installed in pump；The one side of cut ring 2 is the curved surface 22 in round and smooth indent from outer circle to inner circle, so that cutting The thickness for cutting the inner ring of ring 2 is less than the thickness of outer ring, and the two panels blade 13 with impeller 1 is further opened in the one side of the cut ring 2 Matched two grooves 23, two grooves 23 are arranged symmetrically relative to the axis of cut ring 2 in 180 °, wherein, each groove 23 pass to outer ring surface in log spiral sigmoid and the inner ring surface from cut ring 2, and the shape of groove 23 is：One groove body is with described The inner circle direction of the one side of cut ring 2 is starting, along the axis of cut ring 2 towards the outer of the one side of the cut ring 2 Circle direction is threadingly advanced, while the distance of groove body to the axis of cut ring 2 is incremented by geometric progression, the width of groove 23 In gradually incremental.

During installation, cut ring 2 is fixedly installed in pump, makes setting there are two the one of groove 23 facing towards leaf for cut ring 2 Impeller 1, is installed on the end of the shaft of pump, seals and be changed to packing seal by original mechanical seal by wheel 1.During work, impeller 1 The part of blade 13 rotated in the hole among cut ring 2, since blade 13 and the groove of cut ring 2 23 are in logarithm spiral shell The quantity of spin line sigmoid, blade 13 and groove 23 is two and is symmetrical structure, on the one hand, the long fibre in pumped (conveying) medium It can be cut by the cutting mouth of logarithmic spiral structure, long fibre can be torn and shorten, and on the other hand, the dirt after cutting can be pressed Enter in groove 23, so as to be transferred to the outside of impeller 1.

Another embodiment, difference part are that the quantity of the groove 23 of blade 13 and cut ring 2 is 3, due to quantity For odd number, it cannot also use and blade 13 and groove 23 are respectively arranged in impeller 1 and cutting around 180 ° of symmetrical modes of axis On ring 2, but respectively arranged by the way of circumferentially uniformly distributed.

Another embodiment, difference part are that the quantity of the groove 23 of blade 13 and cut ring 2 is 4, by 4 leaves Circumferentially the quartering is distributed on impeller 1 piece 13, and similarly four grooves 23 are arranged in cut ring 2.

When can be seen that the quantity of blade 13 and the groove 23 of cut ring 2 from above-mentioned two embodiment and being all higher than two, Arrangement on impeller 1 and cut ring 2 should be arranged by the way of circumferentially uniformly distributed.

The half-opened impeller 1 of band cutting structure in most occasions, the utility model has anti-clogging strong, and efficiency is relatively revolved The advantages that streaming type Non-blinding pump is high, energy saving, running stability is far better to be compared compared with single channel impeller 1, It is particularly suitable in residence district and other conveyings is containing in a large amount of long stapled sewage, sewage impeller of pump 1 can be substantially reduced and occurred Phenomenon of the failure caused by blocking, although the rated efficiency of pump is more slightly lower than common sewage pump in clean water experiment, using this The sewage pump efficiency of actual of 1 structure of utility model impeller more can be close to design rating, and common sewage pump is due to impeller 1 The reason of in structure, which easily blocks efficiency of actual, can be less than rated value, and efficiency of actual instead can be much lower.

In addition, impeller 1 in the utility model is due to need to cut long fibre and firmware dirt during work, impeller 1 The mechanical property of materials（Hardness, wear-resisting property）It is more demanding, while corrosion of the sewage to impeller 1 when working in order to prevent, so The material of impeller 1 uses superhard high nickel cast iron.

It should be pointed out that for the utility model through absolutely proving, can also have a variety of transformation and the implementation of remodeling Scheme, it is not limited to the specific embodiment of the above embodiment.Above-described embodiment as just the utility model explanation, and It is not the limitation to the utility model.In short, the scope of protection of the utility model should include those for ordinary skill It obviously converts or substitutes and retrofit for personnel.

Claims (4)

1. a kind of blade wheel structure of sewage pump, which is characterized in that including impeller and cut ring；The impeller includes back shroud, axis Body and blade, back shroud is in the form of annular discs, and fixed axis body is erect at the end face center of back shroud, and one end and the back shroud of axis body are consolidated Fixed, the other end of axis body is vacantly set, and the other end center of back shroud is equipped with the axis hole passed in axis body, and blade stands on described On the end face of back shroud, one end of blade is connect with axis body, and the other end of blade is set outward, and blade is linear in logarithmic spiral Bending；Hole among the cut ring rotates inside for the blade of impeller, is circumferentially evenly equipped with multiple mounting holes in cut ring, cuts The one side for cutting ring is the curved surface in round and smooth indent from outer circle to inner circle so that the thickness of the inner ring of cut ring is less than the thickness of outer ring Degree, be further opened in the one side of the cut ring with the matched groove of the blade of impeller, groove in log spiral sigmoid and Outer ring surface is passed to from the inner ring surface of cut ring.

2. the blade wheel structure of sewage pump according to claim 1, which is characterized in that the quantity of the blade and groove is Two, two panels blade is arranged symmetrically relative to the axis of axis body in 180 °, and two grooves are in 180 ° relative to the axis of cut ring It is arranged symmetrically.

3. the blade wheel structure of sewage pump according to claim 1 or 2, which is characterized in that the shape of the blade is：It is a piece of Body using one end direction of the axis body as starting, along axis body axis towards the axis body other end direction spiral shell Rotation is advanced, while the distance of sheet body to the axis of axis body is incremented by geometric progression, and the thickness of sheet body is also incremented by gradual, then piece During the two planes of plane are cut where body end face of plane and the back shroud where one end end face of the axis body Between partly be blade.

4. the blade wheel structure of sewage pump according to claim 1 or 2, which is characterized in that the shape of the groove is：One slot Body using the inner circle direction of the one side of the cut ring as starting, along cut ring axis towards the cut ring one side Outer circle direction be threadingly advanced, while the distance of groove body to the axis of cut ring is incremented by geometric progression, the width of groove Also in gradually incremental.