CN221170104U - Centrifugal fan blade assembly - Google Patents

Abstract

The utility model provides a centrifugal fan blade assembly, which relates to the technical field of centrifugal fans and comprises a chassis and a top disc, wherein blades are arranged between the chassis and the top disc, butt joint blocks are fixedly arranged at the upper end and the lower end of each blade, butt joint grooves are formed in the surfaces of the chassis and the top disc, connecting grooves are formed in the outer surfaces of the chassis and the top disc, connecting rods are arranged on the surfaces of the connecting grooves, annular locking plates are arranged at the lower end of the chassis and the upper end of the top disc, the blades can be assembled between the chassis and the top disc in an inserting mode through the matching of the butt joint blocks and the butt joint grooves, the connecting rods can be buckled between the chassis and the top disc through the connecting grooves so as to be primarily connected with the chassis and the top disc, and then through the use of annular locking plates, threaded columns and nuts, so that the connecting rods are fixed by the annular locking plates, the chassis, the top disc and the blades are locked and fixed by the annular locking plates.

Description

Centrifugal fan blade assembly

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan blade assembly.

Background

The centrifugal fan is a driven fluid machine which is used for increasing the pressure of gas and discharging the gas by means of the input mechanical energy, is widely used for ventilation, dust discharge and cooling of factories, tunnels, cooling towers, vehicles, ships and buildings, at present, most of blades of the centrifugal fan are welded or bolted, if the blades of the centrifugal fan are damaged in the subsequent use, the welded and fixed blades cannot be independently replaced, the whole impeller in the fan can only be replaced, the maintenance cost is increased, and the number of bolts on the bolted and fixed blades is increased, so that the replacement of the blades is more complicated and time-consuming, and the improvement is needed.

Disclosure of utility model

The present utility model is directed to solving the technical problems set forth in the background art.

The utility model adopts the following technical scheme: the utility model provides a centrifugal fan blade subassembly, includes chassis and roof-plate, be provided with the blade between chassis and the roof-plate, the butt joint piece has all been fixed in to the upper and lower both ends of blade, the butt joint groove has all been seted up on the surface of chassis and roof-plate, the linking groove has all been seted up to the surface of chassis and roof-plate, the surface of linking groove is provided with the connecting rod, the lower extreme of chassis and the upper end of roof-plate all are provided with annular lock plate, the fixed surface of annular lock plate is connected with the inserted bar, the screw thread post is all equipped with to the lower extreme of chassis and the upper end of roof-plate, the outside of screw thread post is provided with the nut, the intermediate position department of chassis is provided with the keyway.

Preferably, the nut is matched with the threaded column, and the butt joint block is inserted into the inner side of the butt joint groove. Here, after the threaded post is fitted with the nut, the nut may be screwed on the outside of the threaded post.

Preferably, a buckling groove is formed in the side surface of the connecting rod. Here, the position of the engagement lever can be moved by the catching groove.

Preferably, through holes are formed in the surfaces of the bottom plate, the top plate and the connecting rod, and the inserting rod is smaller than the diameter of the through holes. Here, the insertion rod may be inserted inside the through hole.

Preferably, the lower extreme of chassis is provided with complementary unit, complementary unit includes the filling pad, the filling pad sets up the lower extreme at the chassis, the mounting groove has been seted up to the lower surface of chassis. Here, the mounting grooves are provided for determining the filling pad position.

Preferably, the number of the filling pads is three, and the side surfaces of the filling pads are provided with grooves. Here, the filling pad position can be adjusted by means of the grooves.

Preferably, the lower surface of the filling pad is provided with anti-skid patterns. Here, the anti-slip pattern may improve the anti-slip property of the bottom surface of the filling pad.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. In the utility model, when in actual use, the chassis, the top plate, the blades, the butt joint blocks, the butt joint grooves, the connecting rods, the annular locking plates, the inserting rods, the threaded posts and the nuts are arranged, the blades can be assembled between the chassis and the top plate in an inserting mode by using the matching of the butt joint blocks and the butt joint grooves, the connecting rods can be buckled between the chassis and the top plate through the connecting grooves so as to preliminarily connect the chassis and the top plate, and then the connecting rods are fixed by the annular locking plates through the use of the annular locking plates, the threaded posts and the nuts, so that the chassis, the top plate and the blades are locked and fixed.

2. In actual use, the filling pad can be pressed into the bottom surface of the chassis by the aid of the auxiliary mechanism and the installation groove, so that the chassis can be attached to the surface of each object through the filling pad, and the attaching degree of the chassis can be increased when the chassis is fixed, and the chassis is more firmly installed.

Drawings

FIG. 1 is a top view of a centrifugal fan blade assembly according to the present utility model;

FIG. 2 is a bottom view of a centrifugal fan blade assembly according to the present utility model;

FIG. 3 is a top exploded view of a centrifugal fan blade assembly according to the present utility model;

FIG. 4 is a bottom exploded view of a centrifugal fan blade assembly according to the present utility model;

fig. 5 is a side view of a centrifugal fan blade assembly according to the present utility model.

Legend description:

1. A chassis; 2. a top plate; 3. a blade; 4. a butt joint block; 5. a butt joint groove; 6. a connection groove; 7. a connecting rod; 8. an annular lock plate; 9. a rod; 10. a threaded column; 11. a nut; 12. a key slot; 13. a buckling groove; 14. filling a pad; 15. a mounting groove; 16. a groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Example 1

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a centrifugal fan blade subassembly, including chassis 1 and footwall 2, be provided with blade 3 between chassis 1 and the footwall 2, the upper and lower both ends of blade 3 all are equipped with admittedly and are connected piece 4, upper and lower both ends through setting up blade 3 all are equipped with admittedly and are connected piece 4, blade 3 usable admittedly are inserted and are established between chassis 1 and footwall 2, docking groove 5 has all been seted up on the surface of chassis 1 and footwall 2, linking groove 6 has all been seted up to the surface of chassis 1 and footwall 2, linking groove 6's surface is provided with the joining rod 7, linking groove 6 has all been seted up through the surface that sets up chassis 1 and footwall 2, simultaneously be provided with joining rod 7 at linking groove 6's surface, move joining rod 7 to chassis 1 and footwall 2 in the linking groove 6 back, can let chassis 1 and footwall 2 preliminary link to each other, the lower extreme of chassis 1 and the upper end of footwall 2 all be provided with annular lock plate 8, annular lock plate 8's surface fixed connection has inserted bar 9, be connected with inserted bar 9 through setting up annular lock plate 8's surface fixed connection for detaining 7 or be provided with at the key groove 10 in the middle of the position of the footwall 1 or the footwall 2 at the top wall 1 or the top wall 10 outside the position of the centre of the screw thread of the screw-thread 1, can be provided with at the chassis 1 and the centre of the position of the screw-thread 11, the centre of the top nut is located at the chassis 11 is used for the chassis 1 and the centre of the position of the centre of the thread 11, and the centre of the screw nut is provided with the centre nut is used for the centre nut 11, and the centre nut is 11, and is provided with the centre nut 11, and is 11.

Referring to fig. 1-5, the nut 11 is adapted to the threaded post 10, by setting the nut 11 to be adapted to the threaded post 10, the nut 11 can be rotated on the threaded post 10, the butt joint block 4 is inserted into the inner side of the butt joint groove 5, the side surface of the butt joint rod 7 is provided with the buckling groove 13, the surfaces of the chassis 1, the top plate 2 and the connecting rod 7 are provided with through holes, the inserting rod 9 is smaller than the diameter of the through holes, and by setting the surfaces of the chassis 1, the top plate 2 and the connecting rod 7, the inserting rod 9 is smaller than the diameter of the through holes, so that the inserting rod 9 can conveniently penetrate through the surfaces of the chassis 1, the top plate 2 and the connecting rod 7, and the connecting rod 7 can be connected with the chassis 1 or the top plate 2 respectively.

Example two

Referring to fig. 2 and 4, an auxiliary mechanism is disposed at the lower end of the chassis 1, the auxiliary mechanism includes a filling pad 14, the filling pad 14 is disposed at the lower end of the chassis 1, for improving the fitting degree of the chassis 1, so that the chassis 1 is more firm when being connected with a spindle, a mounting groove 15 is formed on the lower surface of the chassis 1, the position of the filling pad 14 is determined, the number of the filling pads 14 is three, grooves 16 are formed on the side surfaces of the filling pad 14, the position of the filling pad 14 is adjusted, so that the filling pad 14 can be aligned with the mounting groove 15, anti-skid grains are disposed on the lower surface of the filling pad 14, and friction on the surface of the filling pad 14 is improved, so that the filling pad 14 is more anti-skid.

Working principle: by arranging the chassis 1, the top plate 2, the blades 3, the butt joint block 4, the butt joint groove 5, the joint groove 6, the joint rod 7, the annular lock plate 8, the insert rod 9, the threaded post 10 and the nut 11, when the blades 3 are to be replaced, the nut 11 outside the threaded post 10 is screwed first, the nut 11 is removed from the threaded post 10 to loosen the annular lock plate 8, the annular lock plate 8 is removed from the chassis 1 and the top plate 2, at this time, the insert rod 9 moves along with the annular lock plate 8, the insert rod 9 is pulled out from the through hole, then the joint rod 7 is moved outwards by the buckle groove 13 to separate the joint rod 7 from the joint groove 6, then the top plate 2 is moved upwards, the butt joint block 4 is moved out from the butt joint groove 5, finally, the blades 3 are pulled out from the chassis 1 to be replaced, and the damaged blades 3 are replaced, the blade 3 is clamped between the chassis 1 and the top plate 2 by the butt joint block 4 and the butt joint groove 5, then the joint rod 7 is moved into the joint groove 6, finally the annular lock plate 8 is moved on the surface of the chassis 1 or the top plate 2 by the threaded column 10, the fixing of the chassis 1, the top plate 2 and the blade 3 can be completed by screwing the nut 11 into the threaded column 10, the bolt consumption is reduced, the blade 3 is quickly assembled, disassembled and replaced, the filling pad 14 is aligned with the mounting groove 15 by arranging the auxiliary mechanism, the position of the filling pad 14 is moved by the groove 16, the filling pad 14 is pressed into the mounting groove 15 after alignment, the filling pad 14 is mounted on the surface of the chassis 1, the chassis 1 can be connected with a fan spindle through the filling pad 14, the degree of adhesion of the chassis 1 is higher, and the mounting is firmer.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (7)

1. A centrifugal fan blade assembly, includes chassis (1) and footwall (2), its characterized in that: be provided with blade (3) between chassis (1) and roof-plate (2), the upper and lower both ends of blade (3) all are equipped with butt joint piece (4) admittedly, butt joint groove (5) have all been seted up on the surface of chassis (1) and roof-plate (2), link up groove (6) have all been seted up to the surface of chassis (1) and roof-plate (2), the surface of link up groove (6) is provided with joint pole (7), the lower extreme of chassis (1) and the upper end of roof-plate (2) all are provided with annular lock plate (8), the fixed surface of annular lock plate (8) is connected with inserted bar (9), threaded post (10) are all equipped with to the lower extreme of chassis (1) and the upper end of roof-plate (2), the outside of threaded post (10) is provided with nut (11), the intermediate position department of chassis (1) is provided with keyway (12).

2. The centrifugal fan blade assembly according to claim 1, wherein: the nut (11) is matched with the threaded column (10), and the butt joint block (4) is inserted into the inner side of the butt joint groove (5).

3. The centrifugal fan blade assembly according to claim 1, wherein: the side surface of the connecting rod (7) is provided with a buckling groove (13).

4. The centrifugal fan blade assembly according to claim 1, wherein: through holes are formed in the surfaces of the bottom plate (1), the top plate (2) and the connecting rods (7), and the inserting rods (9) are smaller than the through holes in diameter.

5. The centrifugal fan blade assembly according to claim 1, wherein: the lower extreme of chassis (1) is provided with complementary unit, complementary unit includes filling pad (14), filling pad (14) set up the lower extreme in chassis (1), mounting groove (15) have been seted up to the lower surface of chassis (1).

6. The centrifugal fan blade assembly according to claim 5, wherein: the number of the filling pads (14) is three, and grooves (16) are formed in the side surfaces of the filling pads (14).

7. The centrifugal fan blade assembly according to claim 5, wherein: the lower surface of the filling pad (14) is provided with anti-skid patterns.