CN207333282U - efficient double-suction centrifugal pump - Google Patents

Abstract

The utility model discloses efficient double-suction centrifugal pump, is related to industrial water drainage equipment technical field.Including pump case, impeller and the pump shaft through the pump case；Impeller includes the outlet of left import front shroud, left import back shroud, right import front shroud, right import back shroud and V-type；Wherein, left import linear leaf and left import short blade are equipped between left import front shroud and left import back shroud, left import linear leaf is in shift to install with left import short blade；Right import linear leaf and right import short blade are equipped between right import front shroud and right import back shroud, right import linear leaf is in shift to install with right import short blade；Left import back shroud is connected as a single entity with right import back shroud；Left import linear leaf is connected as a single entity with right import short blade in the exit of V-type；Left import short blade is connected as a single entity with right import linear leaf in the exit of V-type；Impeller is arranged in pump case and is connected in pump shaft, and the both ends of pump shaft are arranged on pump case；The efficient double-suction efficiency of centrifugal pump is high.

Description

Efficient double-suction centrifugal pump

Technical field

Industrial water drainage equipment technical field is the utility model is related to, more particularly, to efficient double-suction centrifugal pump.

Background technology

Pump is the machine for the energy for the mechanical energy of prime mover being converted to liquid.Pump belongs to universal machine, and use is very wide It is general, wherein, centrifugal pump is most popular in the application of pump.Centrifugal pump includes the pump of diversified forms, including height Double suction centrifugal pump is imitated because its flow is big, cavitation performance is good and is widely used；

Efficient double-suction centrifugal pump includes pump case, impeller and pump shaft etc., for impeller therein, has developed at present The impeller of many outstanding hydraulic performances simultaneously proposes the water inlet both sides blade dislocation arrangement of double-entry impeller improving flowing water Counteracting forces, improve the efficiency of efficient double-suction centrifugal pump, still, when efficient double-suction centrifugal pump is bigger, its impeller more connects Nearly mixed-flow pump impeller；When efficient double-suction centrifugal pump impeller becomes mixed-flow pump impeller shape, by efficient double-suction centrifugal pump impeller Both sides blade dislocation of intaking arranges that the phenomenon of " lacking " back shroud occurs in exit edge of blade in both sides, causes the efficient double-suction The efficiency of centrifugal pump reduces.

Utility model content

The purpose of this utility model is to provide efficient double-suction centrifugal pump, the efficient double-suction efficiency of centrifugal pump are high.

To achieve the above object, the utility model provides following technical scheme：

One side according to the present utility model, there is provided efficient double-suction centrifugal pump, including pump case, impeller and through the pump The pump shaft of shell；The impeller includes left import front shroud, left import back shroud, right import front shroud, right import back shroud and V The outlet of type；Wherein,

Left import linear leaf and left import short blade are equipped between the left import front shroud and the left import back shroud, The left import linear leaf is in shift to install with the left import short blade；

Right import linear leaf and right import short blade are equipped between the right import front shroud and the right import back shroud, The right import linear leaf is in shift to install with the right import short blade；

The left import back shroud is connected as a single entity with the right import back shroud；The left import linear leaf with it is described it is right into Mouth short blade is connected as a single entity in the exit of the V-type；The left import short blade is with the right import linear leaf in the V-type Exit be connected as a single entity；

The impeller is arranged in the pump case and is connected in the pump shaft, and the both ends of the pump shaft are arranged at described On pump case.

Further, the inner to outer end of the thickness of the left import linear leaf and the left import short blade from itself Gradually it is incremented by；And/or the thickness of the right import linear leaf and the right import short blade from itself it is inner to outer end by Gradually it is incremented by.

Further, the surface of the left import linear leaf, the surface of the left import short blade, the right import are come into leaves The surface of piece and the surface of the right import short blade are curved surface.

Further, two bearing assemblies for being socketed in the pump shaft are further included；

One end of the pump shaft is fixedly connected by a bearing assembly with the pump case, and the other end passes through another The bearing assembly is fixedly connected with the pump case.

Further, the bearing assembly includes bearing, bearing body and bearing gland；

The bearing is socketed on the pump shaft and in the bearing body；The bearing gland is socketed in the pump It is fixedly connected on axis and with the bearing body；The bearing body is fixedly connected with the pump case.

Further, the pump shaft cecum is equipped with can prevent the bearing assembly from loosening locking when the pump shaft inverts Component.

Further, the retention device includes butterfly spring and locking nut；

The locking nut is threadedly coupled with the pump shaft；Described butterfly spring one end is acted on the bearing, another End is acted on the inner face of the locking nut.

Further, the bandage body between the thread gluing master tape and the thread gluing subband is scalable bandage sheet Body.

Further, the pump shaft outer surface is fixed and is coated with axle sleeve.

Further, the outside of the impeller is equipped with impeller ring, and the impeller ring and the pump case is interior Casing ring is equipped between wall.

Further, the impeller ring, which uses, divides valve dual-mouth formula sealing structure；The inner side of the impeller ring Protrusion equipped with the fit depressions in twice and the impeller；The outside of the impeller ring be equipped with together with pump case The boss of fit depressions.

Compared with prior art, the beneficial effects of the utility model are：

Efficient double-suction centrifugal pump according to the present utility model, including pump case, impeller and the pump shaft through the pump case；Institute Stating impeller includes the outlet of left import front shroud, left import back shroud, right import front shroud, right import back shroud and V-type；Its In, left import linear leaf and left import short blade are equipped between the left import front shroud and the left import back shroud, it is described Left import linear leaf is in shift to install with the left import short blade；The right import front shroud and the right import back shroud it Between be equipped with right import linear leaf and right import short blade, the right import linear leaf is set with the right import short blade in dislocation Put；The left import back shroud is connected as a single entity with the right import back shroud；The left import linear leaf and the right import are short Blade is connected as a single entity in the exit of the V-type；The left import short blade and right import linear leaf the going out in the V-type It is connected as a single entity at mouthful；The impeller is arranged in the pump case and is connected in the pump shaft, and the both ends of the pump shaft are arranged at On the pump case；In the efficient double-suction centrifugal pump, impeller comes into leaves including left import linear leaf, left import short blade, right import Piece and right import short blade, left import linear leaf are in shift to install with left import short blade, right import linear leaf and right import Short blade has the advantages that short blade is arranged with linear leaf dislocation, improves the effect of the efficient double-suction centrifugal pump in shifting to install Rate, meanwhile, left import linear leaf is connected as a single entity with right import short blade in the exit of V-type, left import short blade and right import Linear leaf is connected as a single entity in the exit of V-type, realizes that short blade connects with linear leaf reasonable change, can reduce reflux so that leaf Flow distribution tends to uniformly small impingement mix outflow in wheel, improves flow regime, to improve the efficiency of the efficient double-suction centrifugal pump； Therefore, the efficient double-suction centrifugal pump is efficient.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical solution of the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, describe below In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other attached drawings can also be obtained according to these attached drawings.

Fig. 1 is the structure diagram for the efficient double-suction centrifugal pump that the utility model embodiment provides；

Fig. 2 is the structure diagram of impeller in the efficient double-suction centrifugal pump that the utility model embodiment provides；

The right view of the structure diagram of impeller in the efficient double-suction centrifugal pump that Fig. 3 the utility model embodiments provide.

Icon：100- pump cases；200- impellers；The left import front shrouds of 201-；The left import back shrouds of 202-；Before the right imports of 203- Cover board；The right import back shrouds of 204-；The left import linear leafs of 205-；The left import short blades of 206-；The right import linear leafs of 207-；208- Right import short blade；300- pump shafts；401- bearings；402- bearing bodies；403- bearing glands；501- butterfly springs；502- is locked Nut.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality Novel protected scope.

, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the One ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Fingerstall optional factor according to the present utility model is more.Claim according to the present utility model can be combined into more Kind embodiment, therefore the technical solution that claim combinations according to the present utility model go out is in the protection model of the utility model Within enclosing.The utility model nozzle cleaning device is further described through below in conjunction with specific embodiments.

Embodiment

Fig. 1 is the structure diagram for the efficient double-suction centrifugal pump that the utility model embodiment provides；Fig. 2 is the utility model The structure diagram of impeller in the efficient double-suction centrifugal pump that embodiment provides；Fig. 3 the utility model embodiments provide efficient double It is sucked away from the right view of the structure diagram of impeller in heart pump.

One side according to the present utility model, there is provided efficient double-suction centrifugal pump, as shown in Figure 1 and Figure 2, including pump case 100th, impeller 200 and the pump shaft 300 through pump case 100；Impeller 200 includes left import front shroud 201, left import back shroud 202nd, the outlet of right import front shroud 203, right import back shroud 204 and V-type；Wherein,

Left import linear leaf 205 and left import short blade are equipped between left import front shroud 201 and left import back shroud 202 206, left import linear leaf 205 is in shift to install with left import short blade 206；

Right import linear leaf 207 and right import short blade are equipped between right import front shroud 203 and right import back shroud 204 208, right import linear leaf 207 is in shift to install with right import short blade 208；

Left import back shroud 202 is connected as a single entity with right import back shroud 204；Left import linear leaf 205 and the short leaf of right import Piece 208 is connected as a single entity in the exit of V-type；Left import short blade 206 is linked as with right import linear leaf 207 in the exit of V-type One；

Impeller 200 is arranged in pump case 100 and is connected in the both ends of pump shaft 300 and is arranged on pump case 100.

Efficient double-suction centrifugal pump according to the present utility model, in the efficient double-suction centrifugal pump, impeller 200 includes left import Linear leaf 205, left import short blade 206, right import linear leaf 207 and right import short blade 208, left import linear leaf 205 With left import short blade 206 in shifting to install, right import linear leaf 207, in shifting to install, has short with right import short blade 208 The advantages of blade is arranged with linear leaf dislocation, improves the efficiency of the efficient double-suction centrifugal pump, meanwhile, left import linear leaf 205 It is connected as a single entity with right import short blade 208 in the exit of V-type, left import short blade 206 is with right import linear leaf 207 in V-type Exit be connected as a single entity, realize that short blade connects with linear leaf reasonable change, reflux can be reduced so that Flow in Impeller be distributed Tend to uniformly small impingement mix outflow, improve flow regime, to improve the efficiency of the efficient double-suction centrifugal pump；Therefore, this is efficient Double suction centrifugal pump it is efficient；

Wherein, by the outlet that the exit design of impeller 200 is V-type, outlet return and hydraulic pulse are reduced so that the height Imitate the efficient of double suction centrifugal pump；

It should be noted that the material of impeller 200 is cast steel, in order to increase the anti-corrosion of efficient double-suction centrifugal pump effect Fruit, the corrosion-inhibiting coating being made of anticorrosive paint basic unit and anticorrosive paint surface layer, anticorrosive paint are provided with the outer surface of impeller 200 Basic unit contacts with impeller 200, and anticorrosive paint surface layer is arranged in anticorrosive paint basic unit.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, as shown in FIG. 2 and 3, left import length The thickness of blade 205 and left import short blade 206 is gradually incremented by from the inner of itself to outer end；And/or right import linear leaf 207 and the thickness of right import short blade 208 be gradually incremented by outer end from the inner of itself.

The thickness of efficient double-suction centrifugal pump according to the present utility model, left import linear leaf 205 and left import short blade 206 Spend from the inner of itself and be gradually incremented by outer end, alternatively, the thickness of right import linear leaf 207 and right import short blade 208 from The inner of itself to outer end gradually be incremented by, alternatively, the thickness of left import linear leaf 205 and left import short blade 206 from itself The inner be gradually incremented by outer end and the thickness of right import linear leaf 207 and right import short blade 208 from itself it is inner to Outer end is gradually incremented by；

Above-mentioned left import linear leaf 205, left import short blade 206, right import linear leaf 207 and right import short blade 208 thickness is gradually incremented by from the inner of itself to outer end so that its surface has certain height fall so that impeller 200 The ability increase of current is conveyed, so that the efficient double-suction centrifugal pump is efficient.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, the surface of left import linear leaf 205, Zuo Jin The surface on the mouth surface of short blade 206, the surface of right import linear leaf 207 and right import short blade 208 is curved surface.

Efficient double-suction centrifugal pump according to the present utility model, deviated splitter vane is different from import to outlet shapes, but a left side into Mouthful linear leaf 205 and right import short blade 208 and right import linear leaf 207 and left 206 connection of import short blade be by Import short blade 206, right import short blade 208 are approximate to the left for left import linear leaf 205, right 207 curved inclined surface of import linear leaf Cylinder Surface transition, so can make front and back flow velocity tend to be equal, and the increase of water runner blade grid density, avoids producing back in runner The influence of stream, reduces pulsation and vibrations, left and right blades flows are mutually mixed, and energy difference improves the double-suction centrifugal pump water away from diminishing The efficiency of pump；

It should be noted that the cross-sectional area of impeller 200 is circle, the different left side of 200 left side quantity equal shape of impeller Import linear leaf 205 is circumferentially spaced apart with left import short blade 206, the angle between left import linear leaf 205 be equal to it is left into Angle between mouthful short blade 206, the piece number that above-mentioned two angle is equal to 360 ° divided by left import is come into leaves；Similarly, the right side of impeller 200 The different right import linear leaf 207 of quantity equal shape is circumferentially spaced apart with right import short blade 208, right import linear leaf Angle between 207 is equal to the angle between right import short blade 208, and above-mentioned two angle is equal to 360 ° divided by right import linear leaf Number.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, be socketed in pump shaft 300 two are further included Bearing assembly；

One end of pump shaft 300 is fixedly connected by a bearing assembly with pump case 100, and the other end passes through another bearing group Part is fixedly connected with pump case 100.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, as shown in Figure 1, bearing assembly includes bearing 401st, bearing body 402 and bearing gland 403；

Bearing 401 is socketed on pump shaft 300 and in bearing body 402；Bearing gland 403 is socketed on pump shaft 300, And it is fixedly connected with bearing body 402；Bearing body 402 is fixedly connected with pump case 100.

Efficient double-suction centrifugal pump according to the present utility model, between above-mentioned bearing gland 403 and pump shaft 300, bearing body Oil seal is equipped between 402 and pump shaft 300, in order to ensure the normal operation of bearing and extend its service life, in bearing body Lubricating grease or lubricating oil are installed in 402, and can ensure that lubricating grease or lubricating oil will not be leaked to the external world by oil seal；

Wherein, bearing body structure is using enclosed in external-open, bearing 401, bearing gland 403 respectively by the non-gear evil end in both sides into Luggage is matched somebody with somebody, this structure, which is installed bearing, replaces and repaired, to be provided conveniently, time saving and energy saving without integral demounting, greatly improves dress Match somebody with somebody, maintenance efficiency, can be operated if necessary by dust pan, also, the inner side of bearing body 402 is changed into overall structure, and it is relatively whole For machine, rigidity is good；Bearing gland 403 is bolted from the through finite length that is changed into bearing body 402 and is connected, to single axis Body structure increase rigidity is held, the wall thickness of bearing body 402 can be suitably cut down if necessary, ensure rigid and cost-effective.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, 300 cecum of pump shaft is equipped with when pump shaft inverts When can prevent bearing assembly loosen retention device.

Efficient double-suction centrifugal pump according to the present utility model, since pump occurs in efficient double-suction centrifugal pump during termination of pumping Moment is inverted, pump shaft 300 can be subject to the impact force of moment, therefore, can bear instant impact by the locking gear, so that So that the bearing assembly and impeller 200 on pump shaft 300 are not in loosen, structure is still compact；

Wherein, being equipped with the drive end of pump shaft 300 can make bearing assembly fix the snap ring on pump shaft 300, snap ring Baffle ring is equipped between bearing 401, by snap ring impeller 200, bearing 401 etc. be not on pump shaft 300 displacement and Loosen, structure is still compact.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, retention device includes 501 He of butterfly spring Locking nut 502；

Locking nut 502 is threadedly coupled with pump shaft 300；501 one end of butterfly spring is acted on bearing 401, and the other end is made With on the inner face of locking nut 502.

Efficient double-suction centrifugal pump according to the present utility model, compresses generation axis by locking nut 502 by butterfly spring 501 Locking nut 502 is reacted on to pretightning force, locking nut 502 is not unclamped when pump startup moment producing impact force.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, 300 outer surface of pump shaft is fixed and is coated with axis Set.

Efficient double-suction centrifugal pump according to the present utility model, on above-mentioned pump shaft 300 fixation be coated with axle sleeve, axle sleeve plays The effect of sealing, it can be ensured that pump shaft 300 from pumped (conveying) medium corrosion, pump shaft 300 with liquid is completely isolated separates, prevent pump shaft 300 corrosion and abrasion, so as to extend the service life of pump shaft 300.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, the outside of impeller 200 is equipped with impeller seals Ring, and casing ring is equipped between the inner wall of impeller ring and pump case 100.

According to a kind of embodiment of the utility model efficient double-suction centrifugal pump, impeller ring, which uses, divides valve dual-mouth formula Sealing structure；The inner side of impeller ring is equipped with twice and the protrusion of the fit depressions on impeller 200；Outside impeller ring Side is equipped with the boss with the fit depressions on pump case 100 together.

Efficient double-suction centrifugal pump according to the present utility model, impeller ring are reduced herein using valve dual-mouth form is divided Caused leakage loss, improves pump own volume efficiency, increases leakproofness, directly improve gas leak phenomenon, improve in axial direction and open height Imitate double suction centrifugal pump itself net positive suction head so that this pump application range expands, and can be adapted to plateau pressure is low to wait mal-condition；

It is also, convex on the outside of the raised groove cooperation and impeller ring with impeller 200 on the inside of impeller ring Platform coordinates the leakproofness for adding impeller 200 and impeller 200 and pump case 100 with the groove on pump case 100, and it is efficient to improve this The efficiency of double suction centrifugal pump.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should manage Solution：It can still modify the technical solution described in foregoing embodiments, either to which part or whole skills Art feature carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model The scope of each embodiment technical solution.

Claims (10)

1. efficient double-suction centrifugal pump, it is characterised in that including pump case, impeller and the pump shaft through the pump case；The impeller Include the outlet of left import front shroud, left import back shroud, right import front shroud, right import back shroud and V-type；Wherein,

Left import linear leaf and left import short blade are equipped between the left import front shroud and the left import back shroud, it is described Left import linear leaf is in shift to install with the left import short blade；

Right import linear leaf and right import short blade are equipped between the right import front shroud and the right import back shroud, it is described Right import linear leaf is in shift to install with the right import short blade；

The left import back shroud is connected as a single entity with the right import back shroud；The left import linear leaf and the right import are short Blade is connected as a single entity in the exit of the V-type；The left import short blade and right import linear leaf the going out in the V-type It is connected as a single entity at mouthful；

The impeller is arranged in the pump case and is connected in the pump shaft, and the both ends of the pump shaft are arranged at the pump case On.

2. efficient double-suction centrifugal pump according to claim 1, it is characterised in that the left import linear leaf and the left side The thickness of import short blade is gradually incremented by from the inner of itself to outer end；And/or the right import linear leaf and it is described it is right into The thickness of mouth short blade is gradually incremented by from the inner of itself to outer end.

3. efficient double-suction centrifugal pump according to claim 1, it is characterised in that the surface of the left import linear leaf, institute The surface for stating the surface of left import short blade, the surface of the right import linear leaf and the right import short blade is song Face.

4. efficient double-suction centrifugal pump according to claim 1, it is characterised in that further include be socketed in the pump shaft two Bearing assembly；

One end of the pump shaft is fixedly connected by a bearing assembly with the pump case, and the other end passes through described in another Bearing assembly is fixedly connected with the pump case.

5. efficient double-suction centrifugal pump according to claim 4, it is characterised in that the bearing assembly includes bearing, bearing Body and bearing gland；

The bearing is socketed on the pump shaft and in the bearing body；The bearing gland is socketed on the pump shaft, And it is fixedly connected with the bearing body；The bearing body is fixedly connected with the pump case.

6. efficient double-suction centrifugal pump according to claim 5, it is characterised in that the pump shaft cecum, which is equipped with, works as the pump shaft The retention device that can prevent the bearing assembly from loosening during reversion.

7. efficient double-suction centrifugal pump according to claim 6, it is characterised in that the retention device include butterfly spring and Locking nut；

The locking nut is threadedly coupled with the pump shaft；Described butterfly spring one end is acted on the bearing, and the other end is made With on the inner face of the locking nut.

8. efficient double-suction centrifugal pump according to claim 1, it is characterised in that the pump shaft outer surface is fixed and is coated with axis Set.

9. according to claim 1-8 any one of them efficient double-suction centrifugal pumps, it is characterised in that the outside of the impeller is equipped with Impeller ring, and casing ring is equipped between the inner wall of the impeller ring and the pump case.

10. efficient double-suction centrifugal pump according to claim 9, it is characterised in that the impeller ring, which uses, divides valve double Bayonet type sealing structure；The inner side of the impeller ring is equipped with twice and the protrusion of the fit depressions on the impeller；Institute The outside for stating impeller ring is equipped with the boss with the fit depressions on pump case together.