CN205503571U - Centrifugal fan vibration absorbing shaft cover and centrifugal fan - Google Patents
Centrifugal fan vibration absorbing shaft cover and centrifugal fan Download PDFInfo
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- CN205503571U CN205503571U CN201620326839.9U CN201620326839U CN205503571U CN 205503571 U CN205503571 U CN 205503571U CN 201620326839 U CN201620326839 U CN 201620326839U CN 205503571 U CN205503571 U CN 205503571U
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- axle sleeve
- sleeve
- centrifugal blower
- damping
- lobe
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Abstract
The utility model provides a centrifugal fan vibration absorbing shaft cover, including axle sleeve outer sleeve and axle sleeve inner skleeve, axle sleeve inner skleeve and axle sleeve outer sleeve are coaxial to be set up, wherein be provided with damper unit between axle sleeve outer sleeve and the axle sleeve inner skleeve, be formed with the bellying on the inner wall of axle sleeve outer sleeve, the bellying embedding among the damper unit, bellying and the contact of damper unit face. The utility model discloses still disclose simultaneously a centrifugal fan who has above -mentioned vibration absorbing shaft cover. The utility model provides a centrifugal fan vibration absorbing shaft cover through forming bellying and the cooperation between the damper unit on axle sleeve outer sleeve inner wall, has improved the bonding strength between axle sleeve sleeve and the damper unit, has avoided appearing rotatory in -process sleeve and damper unit effectively and the problem that separation or even axial drop has appeared. The utility model has the advantages of rationally just the practicality is good for simple structure, atress.
Description
Technical field
This utility model relates to fluid machinery technical field, particularly relates to a kind of centrifugal blower damping axle sleeve and is provided with the centrifugal blower of this damping axle sleeve.
Background technology
Centrifugal blower is widely used in factory, mine, tunnel, cooling tower, vehicle, boats and ships, boiler, constructure ventilation and household electrical appliance, utilize extraneous kinetic energy, by the impeller of high speed rotating, gas is accelerated, thus improve gas pressure and realize the effect of dispatch gas.As the ingredient of centrifugal blower, forming matched in clearance between axle sleeve and the main shaft in centrifugal blower, cylindrical circular formation outside main shaft is protected.
Axle sleeve is in long-term running, journal surface is by expanding the extruding force of axle sleeve and acting on of synthesis mechanical force, cause its permanent deformation, diameter changes, and then cause what the mechanical engagement between axle sleeve and main shaft do not reached requirement to tighten power, fit clearance, and then abrasion axle sleeve occur between axle sleeve and main shaft.Prior art uses new material solve the problems referred to above, i.e. formed the situation avoiding the occurrence of axle sleeve abrasion by the combination of sleeve and rubber.For increasing frictional force therebetween, usual sleeve outer wall uses simple annular knurl to process.
But, between annular knurl and the rubber of sleeve outer wall, junction bonding appearance insecure, easy loosens phenomenon, and after long-play, rubber easily comes off with alloy, increases the noise of centrifugal blower, even results in it and be kept completely separate, thus cause security incident.For avoiding the occurrence of above-mentioned situation, then must arrange operator's periodic inspection, add the human cost of plant maintenance.
Summary of the invention
This utility model is intended to design a kind of centrifugal fan damping axle sleeve, overcomes rubber in prior art to hold caducous defect with alloy.
A kind of centrifugal blower damping axle sleeve that this utility model provides, including axle sleeve outer sleeve and axle sleeve inner sleeve, described axle sleeve inner sleeve and the coaxial setting of axle sleeve outer sleeve；It is provided with damping portion between wherein said axle sleeve outer sleeve and axle sleeve inner sleeve；It is formed with lobe on the inwall of described axle sleeve outer sleeve；Described lobe embeds in described damping portion, and described lobe contacts with damping portion face,
For improving the bond strength between lobe and damping portion, described lobe extends radially inwardly along axle sleeve outer sleeve and its end profile is round and smooth.
For guaranteeing the stress balance in rotary course, described lobe includes multiple, and described lobe is symmetrical along described axle sleeve outer sleeve inwall.
Preferably, multiple described lobe are uniformly distributed along axle sleeve outer sleeve inwall circumference.
Preferably, described lobe is 12, is separated by 15 ° between adjacent projections.
Preferably, described axle sleeve outer sleeve is made up of die casting aluminium.
For improving the adhesion strength between lobe and damping portion, described axle sleeve outer sleeve surface is formed with sandblasting layer.
Preferably, described damping portion is made up of CR rubber.
For improving the adhesion strength between axle sleeve inner sleeve and damping portion, described axle sleeve inner sleeve surface is formed with sandblasting layer.
The centrifugal blower damping axle sleeve that this utility model is proposed, by the cooperation being formed between lobe and the damping portion on axle sleeve outer sleeve inwall, improve the bond strength between bushing sleeves and damping portion, efficiently avoid and occur that rotary course middle sleeve and damping portion occur separating the problem the most axially come off.Centrifugal blower elastic axis set disclosed in the present embodiment has the advantage that simple in construction, reasonable stress and practicality are good.
This utility model also discloses a kind of centrifugal blower, including centrifugal blower damping axle sleeve；Described centrifugal blower damping axle sleeve includes axle sleeve outer sleeve and axle sleeve inner sleeve, described axle sleeve inner sleeve and the coaxial setting of axle sleeve outer sleeve；It is provided with damping portion between wherein said axle sleeve outer sleeve and axle sleeve inner sleeve；It is formed with lobe on the inwall of described axle sleeve outer sleeve；Described lobe embeds in described damping portion, and described lobe contacts with damping portion face.
Centrifugal blower disclosed in the utility model has the advantage that structural strength is good and stability is high.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The front view of the centrifugal blower damping axle sleeve first embodiment that Fig. 1 is proposed by this utility model；
Fig. 2 is the longitudinal sectional view of Fig. 1；
Fig. 3 is the front view of Fig. 1 bottom bracket axle inner sleeve；
Fig. 4 is the longitudinal sectional view of Fig. 3；
Fig. 5 is the front view of Fig. 1 bottom bracket axle outer sleeve；
Fig. 6 is the longitudinal sectional view of Fig. 5.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
See the structural representation that Fig. 1 to Fig. 6 is centrifugal blower damping axle sleeve first embodiment disclosed in the utility model.As it is shown in figure 1, the axle sleeve 1 for centrifugal blower main shaft axle body has axle sleeve outer sleeve 100 and axle sleeve inner sleeve 101.Main shaft axle body passes from axle sleeve 1 central through hole 104.Axle sleeve outer sleeve 100 and the coaxial setting of axle sleeve inner sleeve 101.Damping portion 102 it is provided with between axle sleeve outer sleeve 100 and axle sleeve inner sleeve 101.Damping portion 102 is coaxially laid between two sleeves.Damping portion 102 can be made up of elastomeric material, rubber or other material that can realize damping, buffering effect.Outer wall and the inwall of axle sleeve outer sleeve 100 of axle sleeve inner sleeve 101 is close on two surfaces of damping portion 102 respectively.Damping portion 102 is laid the most in the form of a ring, improves axle sleeve bulk strength, it is also possible to be distributed the most axisymmetricly.For bonding unstable problem in junction between annular knurl and the rubber of solution sleeve surface, the inwall of axle sleeve outer sleeve 100 is inwardly formed lobe 103.After having assembled, lobe 103 embeds in damping portion 102, and lobe 103 contacts with having formation face between resilient damping portion 102.The lobe 103 embedded in damping portion 102 improves bonding strength therebetween, can be prevented effectively from and axially come off.
Fig. 2 shows axle sleeve that the present embodiment the provided profile along longitudinally cutting.As shown in the figure, lobe 103 extends radially inwardly along axle sleeve 1, and the profile of the outer surface of lobe 103 is round and smooth, and damping portion 102 is coated on the outside of lobe 103 completely, and fit tightly therebetween, realize being connected between damping portion 102 and lobe 103 by lobe 103.
For making the connection between damping portion 102 and lobe 103 more stable, shown in Figure 1, lobe 103 is provided with multiple and symmetrical along axle sleeve outer sleeve 100 inwall.Preferably, arrange 12 along the axial equally distributed lobe 103 of axle sleeve outer sleeve 100 inwall, 15 ° it are separated by between any two adjacent projections 103, to guarantee in the rotary course of centrifugal blower, the stress equalization that the junction of lobe 103 and damping portion 102 is gone up in all directions, avoid wherein some part or the unbalance stress of some angle, promote the structural strength of axle sleeve on the whole.Certainly, lobe 103 can also arrange 6 or 18, or is the most circumferentially uniformly arranged the lobe 103 of other quantity, to realize similar technique effect.
Axle sleeve outer sleeve 100 and axle sleeve inner sleeve 101 are the most preferably made up of die casting aluminium, and damping portion 102 is preferably made up of CR rubber, i.e. neoprene.For improving the adhesion strength between aluminum post and rubber, the surface of axle sleeve outer sleeve 100 and axle sleeve inner sleeve 101 is each formed with sandblasting coating, i.e. in the forming process of sleeve, by spray beam at a high speed, such as copper ore, quartz sand, corundum etc. are ejected into axle sleeve outer sleeve 100 and the surface of axle sleeve inner sleeve 101, make the surface of axle sleeve outer sleeve 100 and axle sleeve inner sleeve 101 by impacting and cutting is acted on, form the sandblasting layer with certain roughness, thus improve axle sleeve outer sleeve 100 and the fatigue resistance of axle sleeve inner sleeve 101, increase sleeve simultaneously, adhesive force between lobe 103 and damping portion 102.
The centrifugal blower damping axle sleeve that the present embodiment is proposed, the bond strength that improve between bushing sleeves and damping portion by the lobe being formed on axle sleeve outer sleeve inwall, efficiently avoid and occur that rotary course middle sleeve and damping portion occur separating the problem the most axially come off.Centrifugal blower elastic axis set disclosed in the present embodiment has the advantage that simple in construction, reasonable stress and practicality are good.
The present embodiment also discloses the centrifugal blower of a kind of damping axle sleeve having described in above-described embodiment, wherein the concrete structure of centrifugal blower damping axle sleeve refers to above-described embodiment and the detailed description of Figure of description and description, not repeating them here, the centrifugal blower being provided with above-mentioned damping axle sleeve has same technique effect.
Last it is noted that above example is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of this utility model each embodiment technical scheme.
Claims (10)
1. a centrifugal blower damping axle sleeve, it is characterised in that include axle sleeve outer sleeve and axle sleeve inner sleeve, described axle sleeve inner sleeve and the coaxial setting of axle sleeve outer sleeve；It is provided with damping portion between wherein said axle sleeve outer sleeve and axle sleeve inner sleeve；It is formed with lobe on the inwall of described axle sleeve outer sleeve；Described lobe embeds in described damping portion, and described lobe contacts with damping portion face.
Centrifugal blower damping axle sleeve the most according to claim 1, it is characterised in that described lobe extends radially inwardly along axle sleeve outer sleeve and its end profile is round and smooth.
Centrifugal blower damping axle sleeve the most according to claim 2, it is characterised in that described lobe includes multiple, described lobe is symmetrical along described axle sleeve outer sleeve inwall.
Centrifugal blower damping axle sleeve the most according to claim 3, it is characterised in that multiple described lobe are uniformly distributed along axle sleeve outer sleeve inwall circumference.
Centrifugal blower damping axle sleeve the most according to claim 4, it is characterised in that described lobe is 12, is separated by 15 ° between adjacent projections.
6. according to the centrifugal blower damping axle sleeve described in any one of claim 1 to 5, it is characterised in that described axle sleeve outer sleeve is made up of die casting aluminium.
Centrifugal blower damping axle sleeve the most according to claim 6, it is characterised in that described axle sleeve outer sleeve surface is formed with sandblasting layer.
8. according to the centrifugal blower damping axle sleeve described in any one of claim 1 to 5, it is characterised in that described damping portion is made up of CR rubber.
Centrifugal blower damping axle sleeve the most according to claim 8, it is characterised in that described axle sleeve inner sleeve surface is formed with sandblasting layer.
10. a centrifugal blower, it is characterised in that there is the damping axle sleeve as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620326839.9U CN205503571U (en) | 2016-04-19 | 2016-04-19 | Centrifugal fan vibration absorbing shaft cover and centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620326839.9U CN205503571U (en) | 2016-04-19 | 2016-04-19 | Centrifugal fan vibration absorbing shaft cover and centrifugal fan |
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| Publication Number | Publication Date |
|---|---|
| CN205503571U true CN205503571U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620326839.9U Active CN205503571U (en) | 2016-04-19 | 2016-04-19 | Centrifugal fan vibration absorbing shaft cover and centrifugal fan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107856697A (en) * | 2017-11-27 | 2018-03-30 | 株洲飞马橡胶实业有限公司 | A kind of rubber bushing structure and its vibration absorber of rail vehicle assembly |
| CN109854537A (en) * | 2017-11-30 | 2019-06-07 | 宁波方太厨具有限公司 | A kind of centrifugal blower of range hood |
-
2016
- 2016-04-19 CN CN201620326839.9U patent/CN205503571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107856697A (en) * | 2017-11-27 | 2018-03-30 | 株洲飞马橡胶实业有限公司 | A kind of rubber bushing structure and its vibration absorber of rail vehicle assembly |
| CN109854537A (en) * | 2017-11-30 | 2019-06-07 | 宁波方太厨具有限公司 | A kind of centrifugal blower of range hood |
| CN109854537B (en) * | 2017-11-30 | 2024-01-12 | 宁波方太厨具有限公司 | Centrifugal fan of range hood |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |