CN207145317U - Stove pump impeller - Google Patents

Abstract

The utility model discloses a kind of stove pump impeller, and it includes the impeller being arranged on rotor on same main shaft, and impeller is located in the sealed pressure housings being connected with rotor；Impeller includes the fixed shaft hole that blade, wheel hub and set are inserted on main shaft, and fixed shaft hole is located at the center of wheel hub, and blade is distributed on the wheel hub surface of fixed shaft hole periphery；Blade is L-shaped, and is in arc transition between the vertical section of blade and traversing section connection；The height on both sides of blade are more than the centre-height of blade, the center rounding off of two lateral blades of blade；The first reinforcement being fixedly connected with wheel hub is provided with each blade, the first reinforcement is two and the setting that intersects；Blade is provided with an anticorrosive coat, and the lower end that impeller is located in pressure housing is provided with a heat-insulated back-up ring；The stove pump impeller structure is novel, is effectively improved the operating efficiency of impeller.

Description

Stove pump impeller

Technical field

The utility model is specifically related to a kind of stove pump impeller.

Background technology

Stove water pump is the key equipment of high-rating generator field forced circulation boiler normal operation, and stove water pump mainly reclaims pot The superheated steam of hot water, steam water interface, saturated vapor and degree of superheat deficiency that stove initial start stage is discharged, in economizer and water cooling Circulation is played between wall, to realize the recovery of working medium and heat；At present, there is rotation speed in the impeller in the prior art for stove water pump The defects of degree is slow, axial thrust load is high, operating efficiency is low and work smoothness are poor.

Utility model content

The purpose of this utility model is to provide a kind of stove pump impeller, and to solve, velocity of rotation mentioned above is slow, axle To the problems such as thrust loading is high, operating efficiency is low and work smoothness are poor.

In order to solve the above technical problems, the utility model provides a kind of stove pump impeller, it includes pacifying with rotor Impeller on same main shaft, impeller are located in the sealed pressure housings being connected with rotor；Impeller includes blade, wheel Hub and set are inserted in the fixed shaft hole on main shaft, and fixed shaft hole is located at the center of wheel hub, and blade is distributed on fixed shaft hole periphery On wheel hub surface；Blade is L-shaped, and is in arc transition between the vertical section of blade and traversing section connection；The height on both sides of blade More than the centre-height of blade, the center rounding off of two lateral blades of blade；It is provided with each blade and consolidates with wheel hub Surely the first reinforcement connected, the first reinforcement are two and the setting that intersects；Blade is provided with an anticorrosive coat, pressure housing It is interior to be provided with a heat-insulated back-up ring positioned at the lower end of impeller.

Further, impeller is unshrouded impeller, and the second reinforcement is provided between the two neighboring blade on impeller.

Further, it is provided with a wearing layer in fixed shaft hole.

Further, the wheel hub surface of fixed blade is curved surface.

Further, the length of traversing section is 1.5 ~ 2.2 times of vertical segment length.

Further, the number of blade is 6 ~ 8.

The beneficial effects of the utility model are：The stove pump impeller structure is novel, the region between two neighboring blade For fluid passage, and pass through the design effectively to L-shaped blade so that in the impeller course of work, both improve current Separate efficiency, increase the velocity of rotation of impeller, in turn ensure that hydro-cushion, reduce axial thrust load, and then effectively carry The high operating efficiency of impeller.

The height on both sides of blade are more than the centre-height of blade, and the center rounding off of two lateral blades of blade is existing The structural strength of blade is improved to effect, its service life is improved, improves its stationarity again, it is ensured that the efficient fortune of complete machine OK.

By the design effectively to the first reinforcement, the bonding strength of blade and wheel hub is improved, prevents from loosening or even de- The phenomenon fall, being broken；The setting of anticorrosive coat, is effectively protected to blade, improves the service life of blade；Heat-insulated gear The setting of circle, reduce in pressure housing positioned at the injury of caused hot-fluid to impeller due to convection current and conduction of impeller bottom.

Brief description of the drawings

Fig. 1 show schematically the stove water pump structure schematic diagram of stove pump impeller.

Fig. 2 show schematically the structural representation of stove pump impeller.

Fig. 3 show schematically the top view of stove pump impeller.

Fig. 4 show schematically the top view of the blade of stove pump impeller.

Wherein：1st, rotor；2nd, main shaft；3rd, impeller；4th, pressure housing；5th, blade；6th, wheel hub；7th, fixed shaft hole；8、 Vertical section；9th, traversing section；10th, anticorrosive coat；11st, heat-insulated back-up ring.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that described embodiment is only a kind of embodiment of the utility model, rather than whole realities Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made The every other embodiment obtained, belongs to the scope of protection of the utility model.

To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this Application is described in further detail.

In the following description, the reference to " one embodiment ", " embodiment ", " example ", " example " etc. shows The embodiment or example so described can include special characteristic, structure, characteristic, property, element or limit, but not each real Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to One embodiment of the application " is not necessarily referring to identical embodiment although it is possible to refer to identical embodiment.

According to one embodiment of the application, there is provided a kind of stove pump impeller, as shown in Fig. 1 ~ Fig. 4, the stove water pump is used Impeller includes the impeller 3 being arranged on rotor 1 on same main shaft 2, and impeller 3 is located at the sealing being connected with rotor 1 In pressure housing 4；Impeller 3 includes the fixed shaft hole 7 that blade 5, wheel hub 6 and set are inserted on main shaft 2, and fixed shaft hole 7 is positioned at wheel The center of hub 6, blade 5 are distributed on the face of wheel hub 6 of the periphery of fixed shaft hole 7.

The blade 5 of the stove pump impeller is L-shaped, and is in circular arc between the vertical section 8 of blade 5 and the connection of traversing section 9 Transition；The height on both sides of blade 5 are more than the centre-height of blade 5, the center rounding off of two lateral blades 5 of blade 5；Each The first reinforcement being fixedly connected with wheel hub 6 is provided with blade 5, the first reinforcement is two and the setting that intersects；Leaf Piece 5 is provided with an anticorrosive coat 10, and the lower end that impeller 3 is located in pressure housing 4 is provided with a heat-insulated back-up ring 11.

In specific implementation, the region between two neighboring blade 5 is fluid passage, and by L-shaped blade 5 Design effectively so that in the course of work of impeller 3, both improved the separation efficiency of current, and increased the velocity of rotation of impeller 3, again Hydro-cushion is ensure that, reduces axial thrust load, and then is effectively improved the operating efficiency of impeller 3；Meanwhile blade 5 Height on both sides be more than blade 5 centre-height, the center rounding off of two lateral blades 5 of blade 5, be both effectively improved The structural strength of blade 5, improves its service life, improves its stationarity again, it is ensured that the Effec-tive Function of complete machine.

By the design effectively to the first reinforcement, the bonding strength of blade 5 and wheel hub 6 is improved, prevents from loosening even The phenomenon come off, being broken；The setting of anticorrosive coat 10, blade 5 is effectively protected, improves the service life of blade 5； The setting of heat-insulated back-up ring 11, reduce in pressure housing 4 positioned at the bottom of impeller 3 due to convection current and conduction and caused hot-fluid to leaf The injury of wheel 3.

According to one embodiment of the application, impeller 3 is unshrouded impeller 3, is set between the two neighboring blade 5 on impeller 3 It is equipped with the second reinforcement；By the design effectively to the second reinforcement, the bonding strength between two neighboring blade 5 is improved, Both blade 5 had been protected, the micro deformation in the rotation process of blade 5 has been reduced again, avoids turbulent flow.

According to one embodiment of the application, a wearing layer is provided with fixed shaft hole 7.

According to one embodiment of the application, the face of wheel hub 6 of fixed blade 5 is curved surface, improves effectively the opening to water of wheel hub 6 Power, improve the operating efficiency of impeller 3.

According to one embodiment of the application, the length of traversing section 9 is 1.5 ~ 2.2 times of the length of vertical section 8.

According to one embodiment of the application, the number of blade 5 is 6 ~ 8.

The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality Type.A variety of modifications to these embodiments will make it will be apparent that defined herein for those skilled in the art General Principle can be realized in other embodiments in the case where not departing from the spirit or scope of utility model.Therefore, originally Utility model will not be limited and the embodiments shown herein, and is to fit to and principles disclosed herein and novelty The property consistent most wide scope of feature.

Claims (6)

1. A kind of 1. stove pump impeller, it is characterised in that：Including with rotor（1）Installed in same main shaft（2）On impeller （3）, the impeller（3）With the rotor（1）Positioned at the sealed pressure housings being connected（4）It is interior；The impeller（3）Including Blade（5）, wheel hub（6）And set is inserted in the main shaft（2）On fixed shaft hole（7）, the fixed shaft hole（7）Positioned at the wheel Hub（6）Center, the blade（5）It is distributed on the fixed shaft hole（7）On the wheel hub surface of periphery；The blade（5）In " L " Shape, and the blade（5）Vertical section（8）With traversing section（9）It is in arc transition between connection；The blade（5）Both sides it is high Degree is more than the blade（5）Centre-height, the blade（5）The two lateral blades（5）Center rounding off；Each The blade（5）On be provided with and the wheel hub（6）The first reinforcement being fixedly connected, first reinforcement be two and Intersect setting；The blade（5）It is provided with an anticorrosive coat（10）, the pressure housing（4）It is interior to be located at the impeller（3）'s Lower end is provided with a heat-insulated back-up ring（11）.
2. 2. stove pump impeller according to claim 1, it is characterised in that：The impeller（3）For unshrouded impeller, the leaf Wheel（3）On two neighboring blade（5）Between be provided with the second reinforcement.
3. 3. stove pump impeller according to claim 1, it is characterised in that：The fixed shaft hole（7）It is wear-resisting to be inside provided with one Layer.
4. 4. stove pump impeller according to claim 1, it is characterised in that：The fixed blade（5）Wheel hub surface for song Face.
5. 5. stove pump impeller according to claim 1, it is characterised in that：The traversing section（9）Length be described perpendicular Straight section（8）1.5 ~ 2.2 times of length.
6. 6. stove pump impeller according to claim 1, it is characterised in that：The blade（5）Number be 6 ~ 8.