A kind of blower fan shaft sleeve device
Technical field
The present invention relates to a kind of new blower fan shaft sleeve device, belong to blower fan and ventilation system engineering structure technical field.
Background technique
Draught fan impeller and motor main shaft as everyone knows, must disassemble impeller from motor reel when blower fan assembling or repairing, owing to need carry out drawing in conjunction with tightr with the horse of drawing of special use during dismounting.Also need special instrument that impeller is installed on the axle of motor during assembling.Particularly impeller size is bigger, and blower fan is installed in again on the Gao Qu air channel, makes installation and removal impeller difficulty more.Often need blower fan integral body is hung on the ground from using the position, dismantle again.Waste of manpower and material resources greatly.
Summary of the invention
For solving the problem of above-mentioned existence, the invention provides a kind of blower fan shaft sleeve device of convenient disassembly.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of blower fan shaft sleeve device comprises the axle sleeve that is installed on the motor reel, on the outer wall of axle sleeve impeller is installed, and is provided with tapered sleeve between described axle sleeve and the motor reel, and the centre of tapered sleeve offers the through hole that cooperates with motor reel, is provided with keyway in the through hole; The axis hole of axle sleeve is a cone shape hole, and the outer wall of tapered sleeve is equipped with in axis hole; The rear end outer wall of the tapered sleeve formation flange that stretches out offers several equally distributed holes and several equally distributed screws on the flange, flange is positioned at the rear of axle sleeve, cooperates on the hole to be provided with the hold-down bolt of fixedlying connected with axle sleeve.
As the further setting of such scheme, offer the groove that communicates with the tapered sleeve outer wall in the through hole of described tapered sleeve and on the position relative with keyway, can make more convenient being assembled on the motor reel of tapered sleeve.
The tapering of described axis hole is 1:7.Because the outer wall of tapered sleeve is equipped with in axis hole, so the outer wall tapering of tapered sleeve also is 1:7.
Arrange described hole and screw space.
Described hole and screw are respectively arranged with three.
A kind of blower fan shaft sleeve device of the present invention changes the axis hole of draught fan impeller axle sleeve into taper hole by straight hole, and cooperate tapered sleeve in taper hole.Tapered sleeve outer wall and taper hole match, and the tapered sleeve through hole is connected with motor reel.Tapered sleeve is fixedlyed connected with axle sleeve by hold-down bolt.During the blower fan assembling, tapered sleeve can be enclosed within on the motor reel easily, tightens the hold-down bolt that compresses tapered sleeve and axle sleeve, and the axis hole of axle sleeve and tapered sleeve outer wall are combined closely, and make firm the linking together of impeller and motor reel.During blower fan dismounting impeller, unscrew hold-down bolt, be screwed on the screw of flange with bolt, tapered sleeve and axle sleeve are backed down under the effect of bolt on the screw.At this moment, the wheel member of blower fan just can disassemble from motor reel easily.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of a kind of blower fan of the present invention with shaft sleeve device;
Fig. 2 is the structural representation of tapered sleeve among Fig. 1;
Fig. 3 looks schematic representation for the right side of Fig. 2.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, a kind of blower fan shaft sleeve device of the present invention comprises the axle sleeve 4 that is installed on the motor reel 1, and impeller 5 is installed on the outer wall of axle sleeve 4.Be provided with tapered sleeve 3 between axle sleeve 4 and the motor reel 1, the centre of tapered sleeve 3 offers the through hole 7 that cooperates with motor reel 1, is provided with keyway 11 in the through hole 7.The axis hole 41 of axle sleeve 4 is a cone shape hole, and the outer wall of tapered sleeve 3 is equipped with in axis hole 41.The rear end outer wall of tapered sleeve 3 stretches out and forms flange 9, offers several equally distributed hole 6 and several equally distributed screws 10 on the flange 9, and flange 9 is positioned at the rear of axle sleeve 4, cooperates on the hole 6 to be provided with the hold-down bolt 2 of fixedlying connected with axle sleeve 4.
As the further setting of such scheme, offer the groove 8 that communicates with tapered sleeve 3 outer walls in the through hole of tapered sleeve 37 and on the position relative with keyway 11.The tapering of axis hole 41 is 1:7.Hole 6 is respectively arranged with three with screw 10, and arrange with screw 10 spaces in hole 6.
Be the convenience of assembling, the present invention has a groove 8 at the another side of keyway 11 correspondences after tapered sleeve 3 machines.So when mounted, just can be enclosed within axle sleeve 4, tapered sleeve 3 easily on the motor reel 1 easily.By the hole on the tapered sleeve 36, three hold-down bolts 2 are fixed on the axle sleeve 4.Tighten the hold-down bolt 2 that compresses tapered sleeve 3 and axle sleeve 4, the axis hole 41 and tapered sleeve 3 outer walls of axle sleeve 4 are combined closely, and make wheel member and motor reel 1 firm linking together.During blower fan dismounting wheel member, unscrew hold-down bolt 2, be screwed on the screw 10 of flange 9 with bolt, tapered sleeve 3 and axle sleeve 4 are backed down under the effect of bolt on the screw 10.At this moment, the wheel member of blower fan just can disassemble from motor reel 1 easily.
A kind of blower fan shaft sleeve device of the present invention is fit to the installation or removal of other axle sleeves equally.
The foregoing description only is used to the inventive concept of the present invention of explaining, but not to the qualification of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.