CN212106317U

CN212106317U - Axial flow fan with external motor

Info

Publication number: CN212106317U
Application number: CN202020614709.1U
Authority: CN
Inventors: 李卫兵; 李惠华
Original assignee: Zhengzhou Dema Electric Co Ltd
Current assignee: Zhengzhou Dema Electric Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-12-08
Anticipated expiration: 2030-04-22

Abstract

The utility model relates to an external axial fan of motor, which comprises a shell, wherein a rotating rod is arranged in the shell, two ends of the rotating rod are respectively rotatably arranged on a first bearing and a second bearing which are arranged in the shell through a supporting rod, and an impeller is arranged on the rotating rod through an anti-disengaging structure; the impeller comprises a base body and a plurality of blades arranged around the base body; the anti-falling structure comprises a tapered hole formed in the base body, a plurality of clamping grooves extending to the tapered hole are formed in one side of the base body, a tapered surface corresponding to the tapered hole and a plurality of driving blocks corresponding to the clamping grooves are arranged on the rotating rod, and a thrust sleeve abutted against the base body is fixedly arranged on the rotating rod; the casing downside is equipped with the support frame, is equipped with driving motor on the support frame, and driving motor rotates through the belt drive bull stick that runs through the casing. The utility model discloses well driving motor installs in the casing outside, has effectively improved axial fan's application scope and air supply efficiency, has the characteristics that structural design is simple, the practicality is strong.

Description

Axial flow fan with external motor

Technical Field

The utility model relates to an axial fan technical field, concretely relates to external axial fan of motor.

Background

With the increasing of building area and the increasing of the requirement for ventilation inside buildings, ventilation equipment is used in many large-scale markets, office buildings, movie theaters and the like, the existing coaxial large-flow axial-flow fans can be used in the common occasions, but the exhaust fan and the fan for fire-fighting smoke exhaust in industrial production have problems, firstly, the motor of the existing axial flow fan is coaxial with the impeller and positioned on the air duct in the casing, the flow through of the air duct can be reduced, secondly, because the working conditions of the motor such as insulation property, explosion resistance and the like are limited, when the motor is used for discharging corrosive gas and combustible gas in industrial production or discharging high-temperature flue gas in fire fighting, the motor on the air duct of the shell can damage or detonate combustible gas due to corrosive gas or high-temperature smoke, so that the fan is out of operation, and safety accidents are caused in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model provides an external axial fan of motor, concrete scheme is as follows:

an external motor type axial flow fan comprises a shell, wherein a rotating rod is arranged in the shell, two ends of the rotating rod are respectively and rotatably arranged on a first bearing and a second bearing which are arranged in the shell through supporting rods, and an impeller is arranged on the rotating rod through an anti-falling structure; the impeller comprises a base body and a plurality of blades arranged around the base body; the anti-falling structure comprises a tapered hole formed in the base body, a plurality of driving grooves extending to the tapered hole are formed in one side of the base body, a tapered surface corresponding to the tapered hole and a plurality of driving blocks corresponding to the driving grooves are formed in the rotating rod, and a thrust sleeve abutted against the base body is fixedly arranged on the rotating rod; the casing downside is equipped with the support frame, be equipped with driving motor on the support frame, driving motor drives through the belt that runs through the casing the bull stick rotates.

Based on the above, the casing is including being located the first casing of downside and being located the second casing of upside, first casing, second casing hinged mounting are in the same place, fix through the buckle between first casing, the second casing, are equipped with the handle on the second casing.

Based on the above, the support frame comprises a plurality of support legs mounted at the bottom of the second shell, and bottom plates are arranged at the bottoms of the support legs; the driving motor is installed in the silencing shell, and the silencing shell is installed on the bottom plate through the shock pad.

Based on the above, the first bearing and the second bearing are both graphite copper sleeve bearings.

Based on the above, the left end of casing is equipped with the protection network.

The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model has the following advantages:

1. in the utility model, the driving motor driving the impeller to rotate is arranged outside the shell, thus improving the application range and the air supply efficiency of the axial flow fan; in addition, the driving motor is installed in the silencing shell, the silencing shell is installed on the bottom plate in the supporting frame through the shock pad, and vibration and noise generated by the driving motor in the operation process are effectively eliminated through the structural design.

2. In the utility model, the impeller is arranged on the rotating rod through the anti-disengaging structure, the anti-disengaging structure comprises a conical hole arranged on the base body, one side of the base body is provided with a plurality of driving grooves extending to the conical hole, the rotating rod is provided with a conical surface corresponding to the conical hole and a plurality of driving blocks corresponding to the driving grooves, and the rotating rod is also fixedly provided with a thrust sleeve abutted to the base body; this structural design makes the impeller can the steady rotation, guarantees air supply efficiency.

3. The utility model discloses in, first bearing, second bearing are graphite copper sheathing bearing, compare in traditional bearing, can guarantee that the bull stick stably rotates, reduce the noise that the bearing produced at the rotation in-process, have reduced the bearing and have kept the maintenance frequency in the use, have improved axial fan's air supply efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the external structure of the present invention.

Fig. 3 is a schematic view of the structure of the rotation rod and the impeller of the present invention.

Fig. 4 is a left side view of the impeller of the present invention.

Fig. 5 is a cross-sectional view of an impeller according to the present invention.

Fig. 6 is a front view of the swivel lever of the present invention.

Fig. 7 is a left side view of the swivel lever of the present invention.

In the figure: 1. a first housing; 2. a second housing; 3. buckling; 4. a handle; 5. a protective net; 6. a first screw; 7. a base plate; 8. a support leg; 9. a drive motor; 10. a sound deadening shell; 11. a belt; 12. a rotating rod; 13. a first bearing; 14. a second bearing; 15. a support bar; 16. an impeller; 17. a substrate; 18. a blade; 19. a tapered hole; 20. a card slot; 21. a conical surface; 22. a drive block; 23. a threaded blind hole; 24. a thrust sleeve; 25. a second screw; 26. a shock-absorbing pad.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

Examples

As shown in fig. 1-7, the utility model provides an external axial fan of motor, which comprises a housin, the inside bull stick 12 that is equipped with of casing, the both ends of bull stick 12 are rotated respectively and are installed on setting up the first bearing 13, the second bearing 14 inside the casing through bracing piece 15, are equipped with impeller 16 through the anti-disengaging structure event on the bull stick 12.

The impeller 16 includes a base 17 and a plurality of blades 18 disposed around the base 17; the anti-disengaging structure comprises a tapered hole 19 formed in the base body 17, a plurality of clamping grooves 20 extending to the tapered hole 19 are formed in one side of the base body 17, a tapered surface 21 corresponding to the tapered hole 19 and a plurality of driving blocks 22 corresponding to the clamping grooves 20 are arranged on the rotating rod 12, and a thrust sleeve 24 abutted to the base body 17 is fixedly arranged on the rotating rod 12.

The thrust sleeve 24 is provided with a through hole, the rotating rod 12 is provided with a threaded blind hole 23 corresponding to the through hole, and the thrust sleeve 24 is fixedly arranged on the rotating rod 12 through a first screw 6 corresponding to the threaded blind hole 23.

The casing downside is equipped with the support frame, be equipped with driving motor 9 on the support frame, driving motor 9 is through the belt 11 drive that runs through the casing bull stick 12 rotates.

The support frame comprises a plurality of support legs 8 installed at the bottom of the second shell 2, and bottom plates 7 are arranged at the bottoms of the support legs 8.

Considering that the driving motor 9 generates large vibration and noise during operation, the driving motor 9 is installed in the silencing case 10, and the silencing case 10 is installed on the base plate 7 through the shock-absorbing pad 26.

In order to facilitate the overhaul and maintenance of the components inside the shell, the shell comprises a first shell 1 positioned on the lower side and a second shell 2 positioned on the upper side, the first shell 1 and the second shell 2 are hinged together, the first shell 1 and the second shell 2 are fixed through a buckle 3, and a handle 4 is arranged on the second shell 2.

Considering that after a long-time operation of a common bearing, the bearing can shake and make abnormal sound, and can influence the normal operation of the impeller 16 in a serious case, in order to avoid frequent shutdown for overhauling and maintaining the bearing, the first bearing 13 and the second bearing 14 both adopt graphite copper sleeve bearings.

In order to prevent foreign matters from entering the axial flow fan and damaging the impeller 16, a protective net 5 is arranged at the left end of the casing, and the protective net 5 is screwed on the casing through a second screw 25.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides an external axial fan of motor which characterized in that: the anti-dropping device comprises a shell, wherein a rotating rod (12) is arranged in the shell, two ends of the rotating rod (12) are respectively and rotatably arranged on a first bearing (13) and a second bearing (14) which are arranged in the shell through a supporting rod (15), and the rotating rod (12) is provided with an impeller (16) through an anti-dropping structure; the impeller (16) comprises a base body (17) and a plurality of blades (18) arranged around the base body (17); the anti-falling structure comprises a tapered hole (19) formed in the base body (17), a plurality of clamping grooves (20) extending to the tapered hole (19) are formed in one side of the base body (17), a tapered surface (21) corresponding to the tapered hole (19) and a plurality of driving blocks (22) corresponding to the clamping grooves (20) are formed in the rotating rod (12), and a thrust sleeve (24) abutted to the base body (17) is fixedly arranged on the rotating rod (12); the casing downside is equipped with the support frame, be equipped with driving motor (9) on the support frame, driving motor (9) are through belt (11) drive that runs through the casing bull stick (12) rotate.

2. The axial-flow fan with an external motor according to claim 1, wherein: the casing is including being located first casing (1) of downside and second casing (2) that are located the upside, first casing (1), second casing (2) are articulated to be installed together, fix through buckle (3) between first casing (1), the second casing (2), are equipped with handle (4) on second casing (2).

3. The axial-flow fan with an external motor according to claim 2, wherein: the supporting frame comprises a plurality of supporting legs (8) arranged at the bottom of the second shell (2), and bottom plates (7) are arranged at the bottoms of the supporting legs (8); the driving motor (9) is installed in the silencing shell (10), and the silencing shell (10) is installed on the bottom plate (7) through a damping pad (26).

4. The axial-flow fan with an external motor according to claim 1, wherein: the first bearing (13) and the second bearing (14) are both graphite copper sleeve bearings.

5. The axial-flow fan with an external motor according to claim 1, wherein: the left end of the shell is provided with a protective net (5).