Large double-suction wear-resistant impeller protecting and locking structure

Abstract

A large double-suction wear-resistant impeller protecting and locking structure comprises an impeller, a hub, hub shields, a pressing plate and a main shaft, the impeller and the hub are locked through bolts to form an impeller assembly, the impeller assembly is arranged in the middle of a clamping groove in the main shaft, and the hub shields are installed at the two ends of the hub respectively and fixedly installed through bolts. The pressing plate is pressed on the flange faces of the hub shields on the two sides, the pressing plate is formed by connecting a plurality of identical arc-shaped structures end to end, and the clamping tongues on the inner circumference of the pressing plate are inserted into the annular clamping grooves in the main shaft along the connecting faces respectively and are aligned again along the connecting faces. The hub shields are mounted at the two ends of the hub to completely cover and protect the hub and bolts at the combined part of the hub and the impeller rear disc, so that the hub and the bolts are prevented from being impacted and abraded by dust particles; the wear resistance of the pressing plate is improved through wear-resistant treatment on the surface of the pressing plate and the design of counterbores, and wear of exposed connecting pieces is reduced; the pressing plate can be locked with the hub protective cover and the hub and is positioned through the clamping groove in the main shaft, so that the impeller is locked and positioned, and protective locking is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan design field, concretely relates to a large -scale double -suction wear -resistant impeller protection and locking structure. BACKGROUND

[0002] In cement, environmental protection and other industries, often need to use the fan to transport the medium containing dust particles. In order to reduce the wear and tear of medium to impeller, usually wear -resistant design is carried out to impeller. The conventional practice is carried out on the surface wear -resistant surfacing on the blade, front disc and rear disc, or lays wear -resistant plate. However, these existing market practices have obvious disadvantages. The hub and the connecting piece (rivet or bolt) between the hub and the hub also belong to the components directly facing the medium flow inside the impeller, and also will bear serious wear and tear. The traditional protection and locking design for these components often cannot provide sufficient protection, resulting in the hub and connecting piece need to be replaced frequently, increase maintenance cost. The protection and locking design for the hub and its connecting piece proposed in the utility model can effectively solve these problems. The design ensures that the hub connection of the impeller is more stable and durable, significantly reduces the risk of component loosening. The innovative protection measure for the hub mentioned in the utility model can withstand long-term erosion of dust-containing medium, providing continuous and reliable protection. This not only can prolong the service life of the impeller, but also can reduce the maintenance frequency and cost, and shows certain superiority in the market. SUMMARY

[0003] In order to overcome the above shortcomings, the utility model provides a large -scale double -suction wear -resistant impeller protection and locking structure.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0005] A large -scale double -suction wear -resistant impeller protection and locking structure, including impeller, hub, hub shield, pressing plate and main shaft, the impeller and hub are locked by bolt and form impeller assembly, the impeller assembly is set in the middle of the annular clamping groove on the main shaft, characterized by, the hub shield is installed at both ends of the hub respectively and is fixedly installed by bolt, the pressing plate is pressed on the flange surface of both sides hub shield, the pressing plate is formed by the same multiple arc structures connected head to tail, the clamping tongue of the inner periphery of the pressing plate is inserted into the annular clamping groove on the main shaft along the joint surface respectively, and is realigned along the joint surface.

[0006] Further optimization, the hub shield includes flange and shield, the flange periphery is provided with the shield, and the surface of the shield is wear -resistant treated or is wear -resistant material as a whole.

[0007] Further optimization, the flange is provided with the sub -buckle matched with the hub, and the shield is in one of conical, arc and cylindrical shape.

[0008] Further optimization, the flange is further provided with a plurality of through holes, the through holes correspond to the first countersunk holes on the pressing plate.

[0009] Further optimization, the flange is further provided with a plurality of second countersunk holes, the second countersunk holes and the through holes are arranged at intervals, and the first countersunk holes and the through holes are penetrated by bolts and screwed into corresponding thread holes of the hub to lock the pressing plate, the hub cover and the hub.

[0010] Further optimization, the pressing plate is further provided with a plurality of blind holes, and the blind holes are arranged in cross with the first countersunk holes, and the blind holes correspond to the second countersunk holes of the flange.

[0011] Further optimization, the surface of the pressing plate is wear-resistant treated or is a wear-resistant material as a whole.

[0012] Further optimization, the inner diameter of the pressing plate is smaller than the outer diameter of the annular clamping groove on the main shaft, so that the pressing plate is inserted into the clamping groove for positioning.

[0013] The utility model discloses the beneficial effects are:

[0014] The hub cover is installed at both ends of the hub, the connecting piece of the hub and the combination part of the hub and the impeller rear disc is completely covered and protected, and is prevented from being impacted and abraded by dust particles, and simultaneously, the wear-resistant treatment of the surface of the pressing plate and the design of the first countersunk hole can increase the wear resistance of the pressing plate and reduce the abrasion of the external connecting piece, the pressing plate can be locked with the hub cover and the hub, and is positioned through the clamping groove on the main shaft, so that the impeller is locked and positioned, and the protection and locking purposes are finally realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the structural schematic diagram of the hub;

[0017] Figure 3 It is the structural schematic diagram of the hub cover;

[0018] Figure 4 It is the structural schematic diagram of the pressing plate;

[0019] Figure 5 It is the structural schematic diagram of the main shaft;

[0020] Fig. 1 is an impeller, 2 is a hub, 201 is a thread hole, 3 is a hub cover, 4 is a blind hole, 5 is a pressing plate, 501 is a clamping tongue, 502 is a first countersunk hole, 6 is a main shaft, 7 is an annular clamping groove, 8 is a flange, 801 is a sub-buckle, 802 is a through hole, 803 is a second countersunk hole, 9 is a cover. DETAILED DESCRIPTION

[0021] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be described in detail below with specific embodiments as the premise, and detailed implementation manners and specific operation processes are given, but the present application can also be implemented in other manners different from those described herein, and therefore the protection scope of the present application is not limited to the following embodiments.

[0022] A large double-suction wear-resistant impeller protection and locking structure, comprising an impeller 1, a hub 2, a hub shroud 3, a pressing plate 5 and a main shaft 6, the impeller 1 and the hub 2 are locked by bolts to form an impeller assembly, the impeller assembly is arranged in the middle of the annular clamping groove 7 on the main shaft 6, the hub shroud 3 is respectively arranged at the two ends of the hub 2 and is fixedly installed by bolts, the pressing plate 5 is pressed on the flange surface of the hub shroud 3 on both sides, the pressing plate 5 is formed by a plurality of arc structures connected end to end, the clamping tongues 501 on the inner periphery of the pressing plate 5 are inserted into the annular clamping groove 7 on the main shaft 6 along the joint surface, and the pressing plate 5 is re-aligned along the joint surface.

[0023] The hub shroud 3 comprises a flange 8 and a shroud 9, the shroud 9 is arranged on the outer periphery of the flange 8, the surface of the shroud 9 is subjected to wear-resistant treatment or is made of a wear-resistant material, the flange 8 is provided with a sub-buckle 801 matched with the hub 2, and the shroud 9 is in the shape of one of a cone, an arc and a cylinder. The flange 8 is further provided with a plurality of through holes 802, the through holes 802 correspond to the first countersunk holes 502 on the pressing plate 5. The flange 8 is provided with the through holes 802 and second countersunk holes 803, and the pressing plate 5 is further provided with a plurality of blind holes 4, and the blind holes 4 are arranged in cross with the first countersunk holes 502, the blind holes 4 correspond to the second countersunk holes 803 of the flange, wherein the blind holes 4 are used to cover the second countersunk holes 803 of the flange 8 to avoid interference, and the bolts are sequentially inserted into the first countersunk holes 502 on the pressing plate 5, the through holes 802 on the flange 8 and the wire holes 201 of the hub 3 to realize locking of the pressing plate 5, the hub shroud 3 and the hub 2, and the second countersunk holes 803 are fastened with the hub 2 by bolts, and the bolts are not exposed after locking, and do not affect cooperation with the pressing plate 5.

[0024] The inner diameter of the pressing plate 5 is smaller than the outer diameter of the annular clamping groove 7 on the main shaft 6 to realize positioning of the pressing plate 2 inserted into the annular clamping groove 7. The surface of the pressing plate 5 is subjected to wear-resistant treatment or is made of a wear-resistant material. The outer surface of the pressing plate 5 is subjected to wear-resistant treatment and the first countersunk holes 502 are designed to ensure that the bolts are not exposed on the surface of the pressing plate after locking.

[0025] In the utility model, the impeller is firstly locked with the wheel hub through the bolt to form the impeller assembly, the impeller assembly is installed in the middle position of the annular clamping groove 7 on the main shaft 6 through the tool, then the wheel hub shroud 3 is installed at both ends of the wheel hub 2 respectively, the corresponding bolt is passed into the countersunk hole on the flange 8 of the wheel hub shroud 3 and is screwed into the corresponding wire hole 201 on the wheel hub 2, the wheel hub shroud 3 can be locked on the wheel hub 2, meanwhile the shroud 9 also covers the wheel hub 2 and the bolt between the impeller 1 and the wheel hub 2, plays the protection function, the pressing plate 5 is pressed on the flange face of the wheel hub shroud on both sides in the next step, the clamping tongues 501 of each part of the pressing plate 5 are inserted into the annular clamping groove 7 on the main shaft 6 along the multiple house type structure joint surfaces of the pressing plate 5 respectively, and are realigned along the joint surfaces, finally the bolt is passed into the first countersunk hole 502 on the pressing plate 5 and the through hole 802 on the flange 8 face and is screwed into the corresponding wire hole 201 on the wheel hub 2, finally the pressing plate 5, the wheel hub shroud 3 and the wheel hub 2 are locked as a whole, because the clamping tongues 501 on the pressing plate 5 on both sides have been inserted into the annular clamping groove 7 on the main shaft 6, therefore the whole impeller assembly, the wheel hub shroud 3, the wheel hub 2 and the pressing plate 5 are locked on the corresponding positions of the main shaft 6, meanwhile the wear-resistant plate on the surface of the pressing plate 5 and the design of the first countersunk hole 502 also play the wear-resistant protection function.

[0026] The main features, use method, basic principle and advantages of the utility model are shown and described above. The technical personnel in the industry should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, under the premise that the utility model is not deviated from the spirit and scope, the utility model will also have various changes and improvements according to the actual situation, and these changes and improvements all fall into the range of the utility model to be protected. The protection range of the utility model is defined by the attached claims and equivalents.

Claims

1. A large double-suction wear-resistant impeller protection and locking structure, comprising an impeller (1), a hub (2), a hub cover (3), a pressure plate (5), and a main shaft (6), wherein the impeller (1) and the hub (2) are bolted together to form an impeller assembly, the impeller assembly being disposed in the middle of an annular groove (7) on the main shaft (6), characterized in that, The hub guards (3) are respectively installed on both ends of the hub (2) and fixed by bolts. The pressure plate (5) presses on the hub guards (3) on both sides. The pressure plate (5) is composed of multiple identical arc-shaped structures connected end to end. The latches (501) on the inner circumference of the pressure plate (5) are inserted into the annular grooves (7) on the main shaft (6) along the contact surface and then realigned along the contact surface.

2. The large double-suction wear-resistant impeller protection and locking structure as described in claim 1, characterized in that, The hub cover (3) includes a flange (8) and a cover (9). The cover (9) is provided on the outer periphery of the flange (8). The surface of the cover (9) is treated with wear-resistant material or is made entirely of wear-resistant material.

3. The large double-suction wear-resistant impeller protection and locking structure as described in claim 2, characterized in that, The flange (8) is provided with a buckle (801) that cooperates with the hub (2), and the cover (9) is shaped as a cone, an arc, or a cylinder.

4. The large double-suction wear-resistant impeller protection and locking structure as described in claim 2, characterized in that, The flange (8) is also provided with a plurality of through holes (802), which correspond to the first countersunk hole (502) on the pressure plate (5).

5. The large double-suction wear-resistant impeller protection and locking structure as described in claim 4, characterized in that, The flange (8) is also provided with a plurality of second countersunk holes (803). The second countersunk holes (803) and through holes (802) are spaced apart. The bolts are inserted into the first countersunk holes (502) and through holes (802) on the pressure plate (5) and screwed into the corresponding threaded holes (201) on the hub (2) to lock the pressure plate (5), hub cover (3) and hub (2).

6. The large double-suction wear-resistant impeller protection and locking structure as described in claim 5, characterized in that, The pressure plate (5) is also provided with a plurality of blind holes (4), and the blind holes (4) are arranged intersecting with the first countersunk hole (502), and the blind holes (4) correspond to the second countersunk hole (803).

7. The large double-suction wear-resistant impeller protection and locking structure as described in claim 1, characterized in that, The surface of the pressure plate (5) is treated with wear-resistant material or the entire plate is made of wear-resistant material.

8. The large double-suction wear-resistant impeller protection and locking structure as described in claim 1, characterized in that, The inner diameter of the pressure plate (5) is smaller than the outer diameter of the annular groove (7) on the main shaft (6) so that the pressure plate (5) can be inserted into the annular groove (7) for positioning.

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