CN211059036U

CN211059036U - Axial-flow fan

Info

Publication number: CN211059036U
Application number: CN201922040411.4U
Authority: CN
Inventors: 林沛熊
Original assignee: Shaoxing Shangyu Dashun Ventilation Equipment Co ltd
Current assignee: Shaoxing Shangyu Dashun Ventilation Equipment Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-07-21
Anticipated expiration: 2029-11-23

Abstract

The utility model discloses an axial-flow fan relates to fire-fighting equipment technical field, aims at solving the problem that the blade shakes because of the wind pressure production, and its technical scheme main points are a plurality of the outside of blade is connected with the round reinforcing ring jointly, one side of blade is connected with a plurality of first strengthening ribs that are parallel to each other, the opposite side intermediate junction of blade has one to follow the second strengthening rib that blade length direction extended, two rings of spacing rings of the inside fixedly connected with of first shell, two rings form the annular spout between the spacing ring, reinforcing ring sliding connection is in the annular spout. The utility model discloses an axial-flow fan carries out spacing anti-shake to the blade through reinforcing ring, first strengthening rib, second strengthening rib and spacing collar.

Description

Axial-flow fan

Technical Field

The utility model relates to a fire-fighting equipment technical field, more specifically say, it relates to an axial-flow fan.

Background

The axial flow fan is widely used and called as axial flow because air flows parallel to a fan shaft, the axial flow fan is usually used in occasions with higher flow requirement and lower pressure requirement, but in the running process of the axial flow fan, the radial length of a convex rib designed on a common axial flow fan blade is shorter, the mechanical strength and the fan efficiency of the fan are influenced, meanwhile, the vibration is generated due to wind pressure, the solution can only increase the thickness of the fan blade, and thus the material waste and the motor energy consumption increase are inevitably caused.

To the above-mentioned problem, the axial fan that publication number is CN201116539Y, its technical essential is: including the fan body, evenly distributed is equipped with protruding muscle on this fan blade, is equipped with the strengthening rib in this protruding muscle both sides, protruding muscle extend length on the fan blade be 35 ~ 45% of fan blade length.

This scheme has solved the problem that the blade produced the shake because of the wind pressure, simultaneously, the utility model provides a new technical scheme solves above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a come to carry out spacing anti-shake's axial-flow fan to the blade through reinforcing ring, first strengthening rib, second strengthening rib and spacing collar.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an axial-flow fan, includes first shell, second shell, motor and impeller, first shell and second shell are connected, the motor is fixed in the second shell through the mount, the output of motor is connected with the center pin that extends to in the first shell, the impeller is established on the center pin and is located first shell, it has a plurality of blades, a plurality of to use the center pin to distribute as centre of a circle annular array on the impeller the outside of blade is connected with the round reinforcing ring jointly, one side of blade is connected with a plurality of first strengthening ribs that are parallel to each other, the opposite side intermediate junction of blade has a second strengthening rib along blade length direction extension, the inside fixedly connected with of first shell two rings spacing collar, two rings form annular spout between the spacing collar, reinforcing ring sliding connection is in annular spout.

Through adopting above-mentioned technical scheme, through setting up first strengthening rib, the second strengthening rib, thereby make both can strengthen the structural strength of monolithic blade itself, make it can bear the effort in all directions and difficult emergence deformation, thereby it takes place following the condition that the impeller rotated the in-process vibration to reduce the blade, and through setting up the reinforcing ring, thereby make and obtained the connection between a plurality of blades, thereby make when atmospheric pressure is used in the blade, need to drive whole blades and reinforcing ring and take place deformation, make the blade can possess better wholeness and do not take place the shake in the rotation process, through setting up two rings of limiting rings, thereby it is spacing to the reinforcing ring, it is spacing to the blade indirectly, make the difficult condition of taking place the shake of blade.

The utility model discloses further set up to: the spacing ring comprises a connecting ring fixedly connected with the inner wall of the first shell, the inner ring of the connecting ring is fixedly connected with a check ring used for limiting the reinforcing ring, and a plurality of reinforcing blocks distributed in an annular array are fixedly connected between the connecting ring and the check ring.

Through adopting above-mentioned technical scheme, when people need install the spacing collar in first shell, can carry out fixed connection through the inner wall of clamping ring and first shell, and because retaining ring and clamping ring are fixed connection, thereby make both possess better firm in connection degree, thereby make the spacing collar possess better wholeness, and can strengthen the joint strength between retaining ring and the clamping ring through setting up the boss.

The utility model discloses further set up to: the motor is kept away from to the center pin one end is connected with the fairing, the fairing is round platform form, the biggest radius of fairing equals the radius of impeller.

Through adopting above-mentioned technical scheme, through setting up the rectifier to make can carry out the rectification through the rectifier when the induced air is carried out in fan work.

The utility model discloses further set up to: the periphery wall of second shell is equipped with a plurality of third strengthening ribs.

Through adopting above-mentioned technical scheme, through setting up the third strengthening rib to make the structural strength of second shell obtain the reinforcing, make it difficult emergence warp.

The utility model discloses further set up to: the top surfaces of the first shell and the second shell are both connected with a plurality of lifting rings.

Through adopting above-mentioned technical scheme, through setting up rings to when people need carry the fan, people can carry whole fan through rings.

The utility model discloses further set up to: the second shell is internally provided with a cubic supporting column, the supporting column is provided with a through hole, a bearing is connected in the through hole, and the bearing is sleeved on the central shaft.

Through adopting above-mentioned technical scheme, through setting up the support column to make the center pin can support it and can not lead to the fact the influence to the rotation of center pin through bearing and support column when rotating.

The utility model discloses further set up to: the bottom surfaces of the first shell and the second shell are connected with a base through a connecting block.

Through adopting above-mentioned technical scheme, through setting up the base to make this fan can pass through base and ground contact.

The utility model discloses further set up to: the first shell and the second shell are both provided with a plurality of flange connection discs, and the flange connection discs of the first shell, which are in contact with the second shell, are connected through bolts and nuts.

Through adopting above-mentioned technical scheme, through setting up flange connection dish to make when first shell and second shell can carry out the dismouting, make things convenient for people to install.

To sum up, the utility model discloses following beneficial effect has:

when people start the motor, the motor drives the impeller to rotate through the central shaft, the impeller drives the blades on the outer ring, the blades can structurally reinforce the two directions of the blades due to the first reinforcing rib and the second reinforcing rib, so that the blades have better firmness, when the blades rotate, the pressure difference formed on the two sides of the blades by air flowing acts on the blades, the blades can bear the influence of the pressure difference, the condition that the blades vibrate due to the lack of better strength is avoided, the reinforcing ring can play a reinforcing effect on the blades, so that the blades can be connected with the reinforcing ring, the blades and the reinforcing ring have better integrity, the blades are not easy to vibrate, noise is avoided, the reinforcing ring can be limited by the limiting ring, the reinforcing ring is rotatably connected between the two limiting rings, and the reinforcing ring is limited by the limiting ring, prevent the blade from generating violent vibration.

Drawings

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

fig. 2 is a side view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic structural view of a stop collar of the present invention;

fig. 5 is a schematic structural diagram of the impeller of the present invention.

In the figure: 1. a first housing; 2. a second housing; 3. a second reinforcing rib; 4. a hoisting ring; 5. a third reinforcing rib; 6. connecting blocks; 7. a base; 8. a rectifier; 9. an impeller; 10. a blade; 11. a motor; 12. a placement frame; 13. a central shaft; 14. a bearing; 15. a support pillar; 16. a reinforcing ring; 17. a flange connecting plate; 18. a first reinforcing rib; 19. a limiting ring; 20. a retainer ring; 21. a connecting ring; 22. a reinforcing block; 23. and connecting the holes.

Detailed Description

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

Example (b): an axial flow fan is shown in figures 1 to 5,

an axial flow fan comprises a first shell 1, a second shell 2, a motor 11 and an impeller 9, wherein a plurality of flange connection discs 17 are integrally formed on the first shell 1 and the second shell 2, the flange connection discs 17, which are contacted with the first shell 1 and the second shell 2, are connected through bolts and nuts, so that the first shell 1 is connected with the second shell 2, a plurality of connecting blocks 6 are welded on the bottom surfaces of the first shell 1 and the second shell 2, then a base 7 is connected with the connecting blocks 6 through a screw connection mode, the connecting blocks 6 are in a cube shape, a plurality of third reinforcing ribs 5 are welded on the outer peripheral wall of the second shell 2, the motor 11 is fixed in the second shell 2 through a placing frame 12, the mode that the motor 11 is installed in the second shell 2 through the placing frame 12 belongs to the prior art, and is common knowledge of all technicians in the field, and therefore, no further description is given, the output end of the motor 11 is welded with a central shaft 13 extending into the first shell 1, a cube-shaped supporting column 15 is welded in the second shell 2, a through hole is formed in the supporting column 15, a bearing 14 is in interference fit in the through hole, the bearing 14 is in interference fit on the central shaft 13, one end, far away from the motor 11, of the central shaft 13 is connected with a rectifier 8, the rectifier 8 is in a round table shape, the maximum radius of the rectifier 8 is equal to the radius of an impeller 9, the impeller 9 is in interference fit on the central shaft 13 and is positioned in the first shell 1, a plurality of blades 10 which are distributed and welded on the impeller 9 in an annular array by taking the central shaft 13 as a circle center are welded, a circle of reinforcing ring 16 is welded outside the blades 10 together, a plurality of first reinforcing ribs 18 which are parallel to each other are welded on one side of the blade 10, a second reinforcing rib 3 which extends along the length direction of the blade 10 is, form annular spout between two rings of

spacing collars

19, 16 sliding connection of reinforcing ring is in annular spout, spacing collar 19 include with 1 inner wall fixed connection's of first shell connecting ring 21, a plurality of connecting holes 23 have been seted up on connecting ring 21, insert the screw in the connecting hole 23 and be connected with first shell 1, thereby make connecting ring 21 fix inside first shell 1, and connecting ring 21 inner circle integrated into one piece has and is used for 16 spacing retaining rings 20 to the reinforcing ring, the welding has a plurality of bosses 22 that are the annular array and distribute between connecting ring 21 and the retaining ring 20, and a plurality of rings 4 have all been welded to the top surface of first shell 1 and second shell 2.

By arranging the flange connection disc 17, the first shell 1, the second shell 2, the connecting block 6 and the base 7, when the axial flow fan needs to be disassembled, people can realize the connection of the first shell 1 and the second shell 2 through the flange connection disc 17 and the bolt and the nut, and when people need to disassemble, only the spanner needs to disassemble the bolt and the nut, and the base 7 can be connected with the connecting block 6 through the screw, so that when people need to disassemble the first shell 1 and the second shell 2, only the base 7 needs to be disassembled firstly, and by arranging the support column 15, the through hole and the bearing 14, the support column 15 and the bearing 14 can play a better support effect on the central shaft 13, so that the central shaft 13 can be supported smoothly when rotating, and by arranging the rectifier 8, because the rectifier is in a round table shape, thereby make when this fan carries out the induced air, can carry out the rectification through rectifier 8 to the air that gets into in first shell 1 and the second shell 2, through setting up rings 4 to make people can carry out the in-process of carrying to whole fan, hang up whole fan through rings 4, thereby make things convenient for people to carry whole fan.

When people need to use the fan, people can firstly place the limiting rings 19 at two sides of the blades 10 in the first shell 1, then insert screws into the connecting holes 23 on the connecting rings 21 in the limiting rings 19, so that the screws are connected with the first shell 1, the connecting rings 21 are fixed, the connecting rings 21 and the check rings 20 are integrally formed, and a plurality of reinforcing blocks 22 made of steel materials are welded between the connecting rings 21, so that the structure of the limiting rings 19 is firmer and more stable, an annular chute is formed between the two limiting rings 19, a circle of reinforcing rings 16 which are welded at the outer sides of the blades 10 together are connected in the annular chute in a sliding manner, and because a plurality of first reinforcing ribs 18 which are parallel to each other are welded at one side of the blades 10, and a second reinforcing rib 3 which extends along the length direction of the blades 10 is welded at the middle of the other side of the blades 10, the structural strength of the blades 10 in all directions is better, thereby make when motor 11 starts and drive center pin 13 and rotate, center pin 13 can drive impeller 9 and take place to rotate, impeller 9 then can drive a plurality of blades 10 and rotate, thereby the induced air, and at this in-process, because the intensity of blade 10 itself has obtained the reinforcing, joint strength between a plurality of blades 10 has obtained the reinforcing of reinforcing ring 16 and has possessed better wholeness simultaneously, it is spacing even to have carried out the position of reinforcing ring 16, thereby when making impeller 9 drive blade 10 take place to rotate, even when atmospheric pressure meets with the effect, also can resist the effort through the stronger structural strength of itself, make blade 10 be difficult for taking place the deformation and produce shake and vibration.

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-flow fan, includes first shell (1), second shell (2), motor (11) and impeller (9), first shell (1) and second shell (2) are connected, motor (11) are fixed in second shell (2) through arrangement frame (12), the output of motor (11) is connected with center pin (13) that extend to in first shell (1), impeller (9) are established on center pin (13) and are located first shell (1), it has a plurality of blades (10), its characterized in that to use center pin (13) to distribute as centre of a circle annular array on impeller (9): a plurality of the outside of blade (10) is connected with round reinforcing ring (16) jointly, one side of blade (10) is connected with a plurality of first strengthening ribs (18) that are parallel to each other, the opposite side intermediate junction of blade (10) has one along second strengthening rib (3) that blade (10) length direction extended, first shell (1) inside fixedly connected with two rings spacing ring (19), two rings form the annular spout between spacing ring (19), reinforcing ring (16) sliding connection is in the annular spout.

2. The axial flow fan of claim 1, wherein: spacing collar (19) include with first shell (1) inner wall fixed connection's clamping ring (21), clamping ring (21) inner circle fixedly connected with is used for spacing retaining ring (20) to reinforcing ring (16), a plurality of bosses (22) that are the distribution of annular array of fixedly connected with between clamping ring (21) and retaining ring (20).

3. The axial flow fan of claim 1, wherein: one end, far away from motor (11), of center pin (13) is connected with fairing (8), fairing (8) are round platform form, the biggest radius of fairing (8) equals the radius of impeller (9).

4. The axial flow fan of claim 1, wherein: the periphery wall of the second shell (2) is provided with a plurality of third reinforcing ribs (5).

5. The axial flow fan of claim 1, wherein: the top surfaces of the first shell (1) and the second shell (2) are connected with a plurality of lifting rings (4).

6. The axial flow fan of claim 1, wherein: be equipped with support column (15) that the cube was described in second shell (2), seted up the through-hole on support column (15), through-hole in-connection has bearing (14), bearing (14) cover is established on center pin (13).

7. The axial flow fan of claim 1, wherein: the bottom surfaces of the first shell (1) and the second shell (2) are connected with a base (7) through a connecting block (6).

8. The axial flow fan of claim 1, wherein: the first shell (1) and the second shell (2) are both provided with a plurality of flange connection discs (17), and the flange connection discs (17) of the first shell (1) which are in contact with the second shell (2) are connected through bolts and nuts.