CN214092438U

CN214092438U - Plate type hub and impeller for axial flow fan

Info

Publication number: CN214092438U
Application number: CN202022844503.0U
Authority: CN
Inventors: 钟燕燕; 王新; 徐超
Original assignee: Weihai Creditfan Ventilator Co Ltd
Current assignee: Weihai Creditfan Ventilator Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-08-31
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a board-like wheel hub and impeller of axial fan is equipped with wheel hub, wheel hub is the disc, wheel hub's middle part is equipped with the axle sleeve, wheel hub's periphery circumference array is equipped with the petiole mounting groove, the petiole mounting groove radially sets up along wheel hub center, the inner of petiole mounting groove is equipped with the petiole positioning groove with root location boss matched with, petiole positioning groove is linked together with the petiole mounting groove, the groove depth of petiole positioning groove is greater than the groove depth of petiole mounting groove, wheel hub adopts the steel sheet to make, wheel hub is last to be equipped with the location inclined plane with middle part location boss matched with in the outer end of petiole mounting groove, wheel hub is last to be equipped with petiole fixing hole in the left and right sides symmetry of petiole mounting groove, the utility model has the advantages of simple structure, high structural strength, low in manufacturing cost, accurate positioning of petiole installation, The blade handle and the hub have the advantages of good fixing effect, convenient assembly and disassembly and the like.

Description

Plate type hub and impeller for axial flow fan

Technical Field

The utility model relates to an axial fan technical field, specific plate-type wheel hub and impeller for axial fan that says so.

Background

At present, hubs for axial fans can be roughly classified into two types: one is the hub plate welding or bolt connection mounting seat assembly, and the other is the cast integral hub.

Adopt wheel hub that the hub plate welding or bolted connection mount pad are constituteed, need process hub plate and mount pad earlier, with the mount pad welding again or with bolted connection on the hub plate, the weak point that this structure exists does: the problems of multiple parts, high manufacturing cost, complex manufacturing process, complex assembly process, inaccurate positioning, reverse mounting seat and the like exist.

An integrated hub is cast, and a retrieval CN2018208433461 discloses an integrated hub and impeller for an axial flow fan, wherein the integrated hub and impeller are provided with a hub and a blade mounting plate, the hub is in a disc shape, a shaft sleeve is arranged in the middle of the hub, a blade fixing groove is arranged in a peripheral circumferential array, the axis of the blade fixing groove is radially arranged along the center of the hub, blade angle positioning holes are formed in the blade fixing groove, mounting plate fixing through holes are formed in two sides of the blade fixing groove, the end part of a blade handle is positioned through the blade shaft end positioning surface of the blade fixing groove, the blade mounting plate and the hub are fixed through fixing bolts, and locking screws penetrate through the blade angle positioning holes to enable blades to be tightly pressed against the blade mounting plate. The structure has the following defects: firstly, a blade mounting plate needs to be arranged, a blade handle is arranged in a blade fixing groove, the blade mounting plate is arranged on the blade handle and is fixed with a hub through a fixing bolt, and the blade handle and the blade mounting plate are tightly pushed through a locking screw, so that a plurality of parts are required, and the mounting and dismounting operations are troublesome; secondly, the hub is integrally cast, the characteristics of positioning holes, fixing grooves and the like are processed, the manufacturing cost is high, the processing cost is long, the casting is thick and heavy, the hub often has the defects of air holes or uneven casting and the like, and the integral strength and the paint spraying effect of the structure are influenced.

CN2017201686703 discloses a fan wheel hub, wheel hub cast molding is equipped with the mounting groove that supplies the petiole installation and the mounting groove that feeds through the mounting groove and supply the petiole to inlay the establishment, and the mounting groove has the annular that supplies the petiole to inlay the establishment for the other end intercommunication of mounting groove, and the petiole root is equipped with root location boss, and the middle part is equipped with middle part location boss, and root location boss card is in mounting groove, and middle part location boss card is in the annular, realizes the axial fixity to the petiole. The structure has the following defects: firstly, the annular groove is formed in the hub, so that the processing difficulty is increased, the consumed processing time is long, the diameter of the hub is increased, and the waste of raw materials and heavy weight are caused; secondly, the installation and positioning of the petioles are accurate, the requirements on the machining precision of the installation clamping groove, the installation groove and the annular groove are high, the flatness of the installation clamping groove, the installation groove and the bottom surface of the annular groove needs to be ensured to be consistent, and the machining difficulty is increased; thirdly, the hub is cast and formed, the integral manufacturing cost is high, the processing cost is long, the casting is thick and heavy, the hub often has defects of air holes or uneven casting and the like, and the integral strength and the paint spraying effect of the structure are influenced.

Disclosure of Invention

The utility model aims at solving the not enough of above-mentioned prior art, provide a simple structure, structural strength height, cost of manufacture low, petiole installation location accurate, petiole and wheel hub fix effectual, the installation dismantle convenient axial fan with board-like wheel hub and impeller.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a board-like wheel hub for axial fan, is equipped with wheel hub, wheel hub is the disc, wheel hub's middle part is equipped with the axle sleeve, wheel hub's periphery circumference array is equipped with the petiole mounting groove, the petiole mounting groove radially sets up along the wheel hub center, the inner of petiole mounting groove is equipped with and fixes a position boss matched with petiole positioning slot with the root, petiole positioning slot is linked together with the petiole mounting groove, petiole positioning slot's the groove depth is greater than the groove depth of petiole mounting groove, its characterized in that: wheel hub adopts the steel sheet to make, wheel hub is last be equipped with middle part location boss matched with location inclined plane in the outer end of petiole mounting groove, wheel hub is last to be equipped with petiole fixing hole in the left and right sides symmetry of petiole mounting groove, and wheel hub adopts steel sheet processing to make, and structural strength is high, saves raw and other materials, light in weight, and through setting up location inclined plane, simple structure, processing is convenient, but the petiole location of the different machining precision of adaptation leaves simultaneously for follow-up petiole surface treatment leaves the surplus.

Inclination on location inclined plane is 30~60 degrees, and through setting up the location inclined plane, the inclined plane of petiole middle part location boss is laminated with the location inclined plane mutually, and location inclined plane inclination sets up at this within range, can adapt to the different machining precision of petiole, and when the petiole processing has the error, no matter petiole machining precision is high or low, the petiole homoenergetic is installed in the petiole mounting groove.

Petiole positioning groove comprises perpendicular spacing preceding terminal surface, perpendicular spacing rear end face, positioning groove bottom surface, terminal surface and perpendicular spacing rear end face parallel arrangement and perpendicular to positioning groove bottom surface before perpendicular spacing, the front end of positioning groove bottom surface is connected with perpendicular spacing preceding terminal surface, and the rear end is connected with perpendicular spacing rear end face, the upper end of perpendicular spacing rear end face is connected with the tank bottom surface of petiole mounting groove, carries on spacingly to the petiole through petiole positioning groove, and the rear end face of root location boss is with perpendicular spacing rear end face looks butt on the petiole to guarantee that the petiole can radially not deviate from.

The utility model provides an impeller for axial fan which characterized in that: including wheel hub, petiole, blade, U-shaped bolt, fixation nut as above, petiole one end is established in the petiole mounting groove, and root location boss on the petiole is inserted in petiole positioning slot, and middle part location boss on the petiole cooperatees with the location inclined plane, and the petiole other end and blade fixed connection, the U-shaped bolt is inserted in the petiole fixed through-hole, the petiole is fixed on wheel hub through U-shaped bolt, fixation nut, fixes the petiole through using the U-shaped bolt, and simple structure, spare part are few, and fastening effect is good, and the installation is dismantled conveniently, and the cooperation of U-shaped bolt and petiole positioning slot guarantees that the petiole is axial, radially fixed.

The utility model discloses still include the wing flap, the wing flap is established at root of blade leeward end, wing flap and blade fixed connection to promote the work efficiency of impeller, reach the effect of energy saving consumption.

The utility model has the advantages that: the hub is made of steel plates, so that the structure strength is high, raw materials are saved, the weight is light, the structure is simple, the processing is convenient by arranging the positioning inclined plane, the hub can be adapted to the positioning of the petioles with different processing precisions, and meanwhile, the allowance is left for the surface treatment of the following petioles; the blade handles are fixed by the U-shaped bolts, the structure is simple, the number of parts is small, the fastening effect is good, and the U-shaped bolts are matched with the blade handle positioning clamping grooves to ensure that the blade handles are axially and radially fixed.

Drawings

Fig. 1 is the overall structure schematic diagram of the plate type wheel hub of the present invention.

Fig. 2 is a cross-sectional view of a portion of the shank mounting slot of fig. 1.

Fig. 3 is a schematic view of the overall structure of the impeller of the present invention.

Reference numerals: the blade comprises a hub-1, a blade shank mounting groove-101, a blade shank positioning clamping groove-102, a vertical limiting front end surface-1021, a vertical limiting rear end surface-1022, a positioning inclined surface-103, a blade shank fixing through hole-104, a blade-2, a flap-3, a rivet positioning mounting hole-301, a U-shaped bolt-4 and a blade shank-5.

Detailed Description

The present invention will be described with reference to the accompanying drawings and examples.

As shown in the attached drawings, the plate-type hub for the axial flow fan is provided with a hub 1, the hub 1 is disc-shaped, a shaft sleeve is arranged in the middle of the hub 1, the periphery of the hub 1 is circumferentially arrayed with petiole mounting grooves 101, the petiole mounting grooves 101 are radially arranged along the center of the hub, one ends, close to the center of the hub, of the petiole mounting grooves 101 are provided with petiole positioning clamping grooves 102 matched with root positioning bosses, the petiole positioning clamping grooves 102 are communicated with the petiole mounting grooves 101, the groove depth of the petiole positioning clamping grooves 102 is larger than that of the petiole mounting grooves 101, the hub 1 is machined and formed by steel plates, one end, far away from the center of the hub, of the petiole mounting grooves 101 is provided with positioning inclined planes 103 matched with the middle positioning bosses on the hub 1, the left side and the right side of the petiole mounting grooves on the hub are symmetrically provided with petiole fixing through holes 104, and the hub is machined by steel plates, structural strength is high, save raw and other materials, light in weight, through setting up the location inclined plane, simple structure, and processing is convenient, but the petiole location of the different machining precision of adaptation leaves, leaves the surplus for follow-up petiole surface treatment simultaneously.

The inclination of location inclined plane 103 is 30~60 degrees, and through setting up the location inclined plane, the inclined plane and the location inclined plane of petiole middle part location boss laminate mutually, and location inclined plane inclination sets up in this within range, can adapt to the different machining precision of petiole, and when petiole processing had the error, petiole machining precision was high or low to make the petiole can install in the petiole mounting groove. The positioning ramp in this embodiment is at a 45 degree angle of inclination.

The petiole positioning slot 102 is composed of a vertical limiting front end face 1021, a vertical limiting rear end face 1022 and a positioning slot bottom face, wherein the vertical limiting front end face 1021 and the vertical limiting rear end face 1022 are arranged in parallel and are perpendicular to the positioning slot bottom face, the front end of the positioning slot bottom face is connected with the vertical limiting front end face 1021, the rear end of the positioning slot bottom face is connected with the vertical limiting rear end face 1022, the upper end of the vertical limiting rear end face 1022 is connected with the slot bottom face of the petiole mounting slot 101, the petiole is limited through the petiole positioning slot, and the rear end face of a root positioning boss on the petiole is abutted against the vertical limiting rear end face to ensure that the petiole cannot be separated from the positioning slot in the radial direction.

An impeller for an axial flow fan comprises a hub 1, a blade handle 5, blades 2, U-shaped bolts 4 and fixing nuts, wherein the hub 1 is disc-shaped, a shaft sleeve is arranged in the middle of the hub 1, a blade handle mounting groove 101 is formed in the peripheral circumference array of the hub 1, the blade handle mounting groove 101 is radially arranged along the center of the hub, a blade handle positioning clamping groove 102 matched with a root positioning boss is formed in one end, close to the center of the hub, of the blade handle mounting groove 101, the blade handle positioning clamping groove 102 is communicated with the blade handle mounting groove 101, the groove depth of the blade handle positioning clamping groove 102 is larger than that of the blade handle mounting groove 101, the hub 1 is machined and formed by steel plates, a positioning inclined plane 103 matched with the middle positioning boss is arranged at one end, far away from the center of the hub, of the blade handle mounting groove 101 on the hub 1, and handle fixing through holes 104 are symmetrically formed in the left side and the right side of the blade handle mounting groove, the hub is made of steel plates, is high in structural strength, saves raw materials, is light in weight, is simple in structure and convenient to machine by arranging the positioning inclined plane, can be matched with the blade stalk positioning with different machining precision, and meanwhile leaves a margin for subsequent blade stalk surface treatment.

The blade handle fixing structure is characterized in that one end of the blade handle 5 is arranged in the blade handle mounting groove 101, a root positioning boss on the blade handle is inserted into the blade handle positioning clamping groove 102, a middle positioning boss is matched with the positioning inclined plane 103, the other end of the blade handle is fixedly connected with the blade 2, the U-shaped bolt 4 is inserted into the blade handle fixing through hole 104, the blade handle 5 is fixed on the hub 1 through the U-shaped bolt 4 and the fixing nut, the blade handle is fixed through the U-shaped bolt, the structure is simple, parts are few, the fastening effect is good, the installation and the disassembly are convenient, and the axial and radial fixation of the blade handle is ensured through the matching of the U-shaped bolt and the blade handle positioning clamping groove.

In this embodiment, a flap 3 is further arranged at the trailing edge of the root of the blade, a rivet positioning mounting hole 301 is formed in the flap, the flap is fixed to the blade through a rivet, and the structure of the flap is the prior art and is not described herein any more.

The utility model discloses when the preparation, use the wheel hub 1 of steel sheet preparation disc, set up at wheel hub's center with axle sleeve matched with opening, rethread machining sets up petiole mounting groove 101, petiole positioning channel section 102, direction inclined plane 103 and petiole fixed through

hole

104, 5 one ends of petiole are established in petiole mounting groove 101, insert through U-shaped bolt 4 and fix the petiole on wheel hub 1 in petiole fixed through hole 104, the petiole other end is fixed with blade 2, pass through fix with rivet with wing flap 3 on the blade.

Claims

1. The utility model provides a board-like wheel hub for axial fan, is equipped with wheel hub, wheel hub is the disc, wheel hub's middle part is equipped with the axle sleeve, wheel hub's periphery circumference array is equipped with the petiole mounting groove, the petiole mounting groove radially sets up along the wheel hub center, the inner of petiole mounting groove is equipped with and fixes a position boss matched with petiole positioning slot with the root, petiole positioning slot is linked together with the petiole mounting groove, petiole positioning slot's the groove depth is greater than the groove depth of petiole mounting groove, its characterized in that: wheel hub adopts the steel sheet to make, wheel hub is last be equipped with middle part location boss matched with location inclined plane in the outer end of petiole mounting groove, wheel hub is last to be equipped with petiole fixing hole in the left and right sides symmetry of petiole mounting groove.

2. The plate hub according to claim 1, wherein: the inclined angle of the positioning inclined plane is 30-60 degrees.

3. The plate hub according to claim 2, wherein: petiole positioning groove comprises terminal surface before perpendicular spacing, perpendicular spacing rear end face, positioning groove bottom surface, terminal surface and perpendicular spacing rear end face parallel arrangement and perpendicular to positioning groove bottom surface before perpendicular spacing, the front end of positioning groove bottom surface is connected with the terminal surface before perpendicular spacing, and the rear end is connected with perpendicular spacing rear end face, the upper end of perpendicular spacing rear end face is connected with the tank bottom surface of petiole mounting groove.

4. The utility model provides an impeller for axial fan which characterized in that: the blade comprises a hub, a blade handle, blades, U-shaped bolts and fixing nuts according to the claims 1, 2 or 3, wherein one end of the blade handle is arranged in the blade handle mounting groove, a root positioning boss on the blade handle is inserted into a blade handle positioning clamping groove, a middle positioning boss on the blade handle is matched with a positioning inclined plane, the other end of the blade handle is fixedly connected with the blades, the U-shaped bolts are inserted into blade handle fixing through holes, and the blade handle is fixed on the hub through the U-shaped bolts and the fixing nuts.

5. The impeller for an axial flow fan according to claim 4, wherein: the wing flap is arranged at the leeward end of the root of the blade and is fixedly connected with the blade.