CN212028176U

CN212028176U - Axial flow fan

Info

Publication number: CN212028176U
Application number: CN202020695779.4U
Authority: CN
Inventors: 顾鉴
Original assignee: Zhejiang Shangyang Ventilation Equipment Co ltd
Current assignee: Zhejiang Shangyang Ventilation Equipment Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-11-27
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses an axial fan, its technical scheme main points are: including the impeller, the impeller includes the tight pulley, detachably is connected with a plurality of fan blades on the tight pulley periphery wall, the fan blade bottom is provided with the inserted block, a plurality of inserted block male slots that are used for have been seted up on the surface of tight pulley, the slot is cyclic annular along the axis of tight pulley and arranges, the length direction along the slot on the slot inside wall is provided with first oblique sawtooth, be provided with along the length direction of inserted block on the side of inserted block with the oblique sawtooth of first oblique sawtooth assorted second, the tight pulley surface corresponds slot position and all is provided with the closing cap. The utility model discloses an useful: when a single fan blade is damaged, the sealing cover only needs to be taken down, and then the insert block is taken out from the insert groove along the vertical direction, so that the disassembly of the fan blade can be completed, the single damaged fan blade can be replaced, and the replacement cost is saved.

Description

Axial flow fan

Technical Field

The utility model relates to a ventilation equipment, more specifically say, it relates to an axial fan.

Background

Axial fans are widely used, namely, air flows in the same direction as the axis of the fan blade, such as electric fans, and fans outside air conditioners are fans operated in an axial flow mode, so that the fans are called axial flow type, and the air flows parallel to the axis of the fans.

The axial flow fan mainly comprises an impeller, a casing, a motor and other parts, a support is connected with a casing air duct by profile steel, when the impeller rotates, air axially enters the impeller from an air inlet, the energy of the air is increased by pushing of blades on the impeller, then the air flows into a guide vane, the guide vane changes deflection airflow into axial flow, meanwhile, the air is guided into a diffuser pipe, the kinetic energy of the air is further converted into pressure energy, and finally the pressure energy is introduced into a working pipeline.

The impeller usually comprises a fixed wheel and blades, but because the blades are fixedly connected to the fixed wheel, when a single blade is damaged, the whole impeller must be replaced, and the replacement cost is high.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a blade detachable axial fan.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an axial fan, includes the impeller, the impeller includes the tight pulley, detachably is connected with a plurality of fan blades on the tight pulley periphery wall, the fan blade bottom is provided with the inserted block, a plurality of inserted block male slots that are used for are seted up on the surface of tight pulley, the slot is cyclic annular along the axis of tight pulley and arranges, be provided with first oblique sawtooth along the length direction of slot on the slot inside wall, be provided with along the length direction of inserted block on the side of inserted block with the oblique sawtooth of first oblique sawtooth assorted second, the tight pulley surface corresponds the slot position and all is provided with the closing cap.

Through adopting above-mentioned technical scheme, when the installation fan blade, only need insert the inserted block in the slot, the oblique sawtooth of second imbeds in the tooth's socket of the oblique sawtooth of second thereupon, it is spacing to the oblique sawtooth of second through first oblique sawtooth, make the fan blade can't transversely extract, cover the closing cap afterwards, it is spacing to the inserted block through the closing cap, make the inserted block can't vertically take out from the inserted block, thereby make the connection of fan blade firmly on the tight pulley, when single fan blade is damaged, only need take off the closing cap, follow vertical direction afterwards and take out the inserted block from the inserted block and can accomplish the dismantlement to the fan blade, thereby make and to change single damaged fan blade, practice thrift the replacement cost.

The utility model discloses further set up to: the sealing cover is connected to the surface of the fixed wheel in a sliding mode, and a locking piece used for limiting the sliding of the sealing cover is arranged at one end of the sealing cover.

Through adopting above-mentioned technical scheme, because the closing cap is sliding connection on fixed round surface for only need can accomplish the closing cap spacing to the inserted block through promoting the closing cap, the rethread locking piece is fixed the closing cap afterwards, and convenient operation has improved the spacing effect of closing cap to the inserted block.

The utility model discloses further set up to: a plurality of draw-in grooves that are used for the closing cap card to go into are seted up on the fixed wheel surface, draw-in groove and slot intercommunication, the spout has all been seted up on the inner wall of draw-in groove both sides, the closing cap both sides all are provided with and are used for gliding slider in the spout.

Through adopting above-mentioned technical scheme, owing to be provided with spout and slider, slide in the spout through the slider, realized the sliding connection of closing cap in the draw-in groove, spacing through the spout to the slider for the slider is difficult for taking place to rock when sliding in the spout, thereby makes the closing cap can more smoothly slide on the draw-in groove.

The utility model discloses further set up to: the locking piece is a bolt, and a threaded hole matched with the bolt is formed in the top surface of the insertion block.

Through adopting above-mentioned technical scheme, owing to set up with bolt assorted screw hole, cover the slot at the closing cap after, through rotatory bolt, make in the screw hole of bolt screw in inserted block top surface to accomplish the fixed to the closing cap, threaded connection has convenient operation, connects firm characteristics, thereby makes the covering that the closing cap can be firmly on the inserted block, spacing to the inserted block through the closing cap, thereby makes the inserted block be difficult for rocking more, connects more steadily firmly.

The utility model discloses further set up to: two holding pieces are symmetrically arranged at the top of the bolt.

Through adopting above-mentioned technical scheme, owing to be provided with two and hold the piece, the setting of holding the piece has changed the point of application of force when rotating the bolt for operating personnel can rotate to hold the piece and come bolt screw in threaded hole through the hand, and is convenient laborsaving more.

The utility model discloses further set up to: and a spring washer is arranged on the bolt.

Through adopting above-mentioned technical scheme, because the bottom of nut is provided with spring washer, after the bolt was screwed, spring washer can last to exert elasticity to the nut to make the bolt inseparabler with the helicitic texture laminating of screw hole, thereby make the difficult pine of bolt take off, connect more firmly.

The utility model discloses further set up to: the one side that the oblique sawtooth of second was kept away from to the inserted block is provided with the location strip along the length direction of the oblique sawtooth of second, the constant head tank that is used for location strip male is seted up on the surface of tight pulley.

Through adopting above-mentioned technical scheme, owing to be provided with location strip and constant head tank, the operation of seting up to the inserted block insertion slot of constant head tank plays prepositioning effect for operating personnel only need insert the constant head tank with the location strip, can be with the smooth and easy insertion slot of inserted block in, it is more convenient to operate.

The utility model discloses further set up to: the insert block is made of stainless steel material.

Through adopting above-mentioned technical scheme, because the inserted block is made by stainless steel material, stainless steel material has intensity height, hardness height and the good characteristics of corrosion resistance for inserted block intensity and hardness are higher, and difficult damaged the buckling, and corrosion resistance is better, and difficult the rust, thereby prolonged the life of inserted block greatly.

To sum up, the utility model discloses following beneficial effect has: when the installation fan blade, only need insert the slot with the inserted block in, the oblique sawtooth of second imbeds the tooth's socket of the first oblique sawtooth thereupon, it is spacing to the oblique sawtooth of second through first oblique sawtooth, make the fan blade can't transversely extract, cover the closing cap afterwards, spacing through the closing cap to the inserted block, make the inserted block can't vertically take out from the inserted block, thereby make the connection of fan blade firmly on the tight pulley, when single fan blade is damaged, only need take off the closing cap, follow vertical direction afterwards and take out the inserted block from the inserted block in can accomplish the dismantlement to the fan blade, thereby make and to change single damaged fan blade, practice thrift the replacement cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an impeller of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 1. a fixed wheel; 2. a fan blade; 3. inserting a block; 4. a slot; 5. a first slanted serration; 6. a second slanted serration; 7. sealing the cover; 8. a bolt; 9. a card slot; 10. a chute; 11. a slider; 12. a threaded hole; 13. a grip piece; 14. a spring washer; 15. a positioning bar; 16. and (6) positioning a groove.

Detailed Description

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

An axial flow fan is shown in figures 1 to 3 and comprises an impeller, the impeller comprises a fixed wheel 1, a plurality of fan blades 2 are detachably connected to the outer peripheral wall of the fixed wheel 1, insert blocks 3 made of stainless steel materials are arranged at the bottoms of the fan blades 2, a plurality of slots 4 for inserting the insert blocks 3 are formed in the surface of the fixed wheel 1, the slots 4 are annularly arranged along the axis of the fixed wheel 1, first oblique saw teeth 5 are arranged on the inner side walls of the slots 4 along the length direction of the slots 4, second oblique saw teeth 6 matched with the first oblique saw teeth 5 are arranged on the side faces of the insert blocks 3 along the length direction of the insert blocks 3, sealing covers 7 are arranged on the surfaces of the fixed wheel 1 corresponding to the slots 4, the sealing covers 7 are connected to the surfaces of the fixed wheel 1 in a sliding mode, a plurality of clamping grooves 9 for clamping the sealing covers 7 to be clamped into are formed in the surfaces of the fixed wheel 1, the clamping grooves 9 are, 7 both sides of closing cap all are provided with and are used for gliding slider 11 in

spout

10, 7 one end of closing cap is provided with and is used for restricting the gliding locking piece of closing cap 7, the locking piece is bolt 8, offer on 3 top surfaces of inserted block be used for with bolt 8 assorted screw hole 12, bolt 8's nut top symmetry is provided with two and holds piece 13, bolt 8's nut bottom is provided with spring washer 14, the inserted block 3 is kept away from on the one side of the oblique sawtooth 6 of second along the length direction of the oblique sawtooth 6 of second and is provided with location strip 15, fixed pulley 1's surface is offered and is used for location strip 15 male constant head tank 16.

When the fan blade 2 is installed, only the inserting block 3 at the bottom of the fan blade 2 needs to be aligned and inserted into the slot 4 on the fixed wheel 1, the second oblique saw teeth 6 on the inserting block 3 are then clamped into the slot 4 and are tightly matched with the first oblique saw teeth 5 in the slot 4, the first oblique saw teeth 5 limit the second oblique saw teeth 6, so that the fan blade 2 cannot be pulled out transversely along the length direction of the fan blade 2, then the sealing cover 7 is covered, the sealing cover 7 limits the insert 3, so that the insert 3 can not be longitudinally taken out from the slot 4, thereby make the connection of fan blade 2 firmly on the tight pulley 1, and when single fan blade 2 was damaged, only need take off closing cap 7, remove closing cap 7 spacing to inserted block 3, follow slot 4's vertical direction afterwards with inserted block 3 take out in slot 4 can accomplish the dismantlement to fan blade 2 to make and to change single damaged fan blade 2, practice thrift the replacement cost.

Because closing cap 7 is sliding connection on tight pulley 1 surface for only need can accomplish closing cap 7 spacing to inserted block 3 through promoting closing cap 7, because closing cap 7 one end is provided with the locking piece, fixed closing cap 7 and inserted block 3 through the locking piece, can accomplish the installation of closing cap 7, convenient operation has improved the spacing effect of closing cap 7 to inserted block 3.

Owing to be provided with spout 10 and slider 11, slide in spout 10 through slider 11, realized the sliding connection of closing cap 7 in draw-in groove 9, spacing through spout 10 to slider 11 for slider 11 is difficult for taking place to rock when sliding in spout 10, thereby makes the closing cap 7 can be more smooth and easy slide on draw-in groove 9, and then makes closing cap 7 can play better spacing effect.

Because the locking piece is bolt 8, and 3 tops of inserted block seted up with bolt 8 assorted screw hole 12, cover 7 the back with slot 4 at the closing cap, bolt 8 on the closing cap 7 aligns with the screw hole 12 of 3 top surfaces of inserted block along with it, at this moment through rotatory bolt 8, in 8 screw in screw hole 12 with bolt, thereby accomplish the fixed to closing cap 7, threaded connection has convenient operation, connect firm characteristics, thereby make the covering that closing cap 7 can be firmly on inserted block 3, spacing through closing cap 7 to inserted block 3, thereby make inserted block 3 be difficult for rocking more, it is more firm to connect.

Due to the fact that the two holding pieces 13 are arranged, the force application point when the bolt 8 is rotated is changed due to the arrangement of the holding pieces 13, an operator can rotate the holding pieces 13 by hands to screw the bolt 8 into the threaded hole 12, and the bolt is convenient and labor-saving.

Because the nut bottom of bolt 8 is provided with spring washer 14, after bolt 8 screwed, spring washer 14 can continue to exert elasticity to the nut to make the more inseparable of bolt 8 and the screw thread structure laminating of screw hole 12, thereby make the difficult pine of bolt 8 take off, connect more firmly.

Owing to be provided with location strip 15 and constant head tank 16, the offering of constant head tank 16 plays prepositioning effect to the operation that inserted block 3 inserted slot 4 for operating personnel only need insert location strip 15 in constant head tank 16, can be with inserted block 3 smooth and easy insert slot 4 in, it is more convenient to operate.

Because the inserted block 3 is made of stainless steel materials, the stainless steel materials have the characteristics of high strength, high hardness and good corrosion resistance, so that the inserted block 3 has higher strength and hardness, is not easy to damage and bend, has better corrosion resistance and is not easy to rust, and the service life of the inserted block 3 is greatly prolonged.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an axial fan, includes the impeller, its characterized in that: the impeller includes tight pulley (1), detachably is connected with a plurality of fan blades (2) on tight pulley (1) periphery wall, fan blade (2) bottom is provided with inserted block (3), a plurality of inserted block (3) male slot (4) that are used for are seted up on the surface of tight pulley (1), slot (4) are cyclic annular along the axis of tight pulley (1) and arrange, be provided with first oblique sawtooth (5) along the length direction of slot (4) on slot (4) inside wall, the length direction along inserted block (3) is provided with oblique sawtooth (6) of second with first oblique sawtooth (5) assorted on the side of inserted block (3), tight pulley (1) surface corresponds slot (4) position and all is provided with closing cap (7).

2. The axial flow fan of claim 1, wherein: the sealing cover (7) is connected to the surface of the fixed wheel (1) in a sliding mode, and a locking piece used for limiting the sliding of the sealing cover (7) is arranged at one end of the sealing cover (7).

3. The axial flow fan of claim 2, wherein: a plurality of draw-in grooves (9) that are used for closing cap (7) card to go into are seted up on tight pulley (1) surface, draw-in groove (9) and slot (4) intercommunication, spout (10) have all been seted up on draw-in groove (9) both sides inner wall, closing cap (7) both sides all are provided with and are used for gliding slider (11) in spout (10).

4. The axial flow fan of claim 2, wherein: the locking piece is bolt (8), offer on the inserted block (3) top surface and be used for with bolt (8) assorted screw hole (12).

5. The axial flow fan of claim 4, wherein: two holding pieces (13) are symmetrically arranged at the top of the bolt (8).

6. The axial flow fan of claim 4, wherein: and a spring washer (14) is arranged on the bolt (8).

7. The axial flow fan of claim 1, wherein: the one side of oblique sawtooth (6) of second is kept away from in inserted block (3) is provided with location strip (15) along the length direction of oblique sawtooth (6) of second, location strip (15) male constant head tank (16) are offered on the surface of tight pulley (1) and are used for locating.

8. The axial flow fan of claim 1, wherein: the insert block (3) is made of stainless steel materials.