High-power fan with double-bearing supporting structure

Abstract

The utility model belongs to the technical field of tunnel mine fans, and relates to a high-power fan with a double-bearing supporting structure, which comprises a stator, a rotor and an electrified coil, and an inner cylinder of the rotor annularly surrounds the peripheries of the stator and the electrified coil; a first bearing and a second bearing which surround the stator are arranged between the inner cylinder wall of the rotor and the outer circumferential wall of the stator, the bearings are arranged at the two ends of the rotor respectively, and wind blades which are evenly distributed around the circumference and extend outwards in the radial direction are arranged on the outer cylinder wall of the rotor. According to the utility model, the cylindrical rotor is adopted to rotate around the shaft-shaped stator, the bearings are arranged at the two ends of the rotor, and the double-bearing support is carried out on the main shaft of the rotor, so that the problems of unbalanced rotation and swinging caused by the single-bearing support at one end of the rotor are effectively solved; therefore, the high-power large-size fan adopting the structure is better in balance and stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel mine fans and relates to a high-power fan with a double-bearing support structure. Background Art

[0002] Fans have long been used in tunnels, subways, mines and other project areas. The traditional fan structure consists of a rotor, a stator, a fan blade and a shaft. One end of the rotor is supported by a bearing, but since the rotor is only supported by a bearing at one end, the fan structure is subject to many restrictions. The length of the rotor cannot be made longer. If it is made longer, the fan rotor will swing and become unbalanced when rotating. This also limits the fan's size and power to not be too large. This limits the use of some places that require high-power fans, such as coal mines, tunnels and other places.

[0003] Therefore, a high-power and large-size fan with better stability and balance is needed to solve this technical problem. Utility Model Content

[0004] The technical solution adopted by the utility model to solve the technical problem is: a high-power fan with a double-bearing support structure, comprising: a stator, a rotor and an energized coil, the stator is shaft-shaped, the rotor is cylindrical, the energized coil is arranged around the outer circumferential wall of the stator, and the inner cylinder of the rotor annularly surrounds the stator and the periphery of the energized coil; a first bearing and a second bearing surrounding the stator are arranged between the inner cylinder wall of the rotor and the outer circumferential wall of the stator, the outer bushings of the first bearing and the second bearing are embedded in the inner cylinder of the rotor, the inner bushings of the first bearing and the second bearing are sleeved on the outer circumferential wall of the stator, the first bearing and the second bearing are respectively arranged at two ends of the rotor, and the outer cylinder wall of the rotor is provided with wind blades uniformly distributed around the circumference and extending radially outward; a wire outlet hole is provided at the end of the stator, and the wire outlet hole is connected to the inside and outside of the cylinder of the rotor; the rotating axis of the stator and the rotating axis of the rotor coincide; when the energized coil is energized, a magnetic field is generated to drive the rotor to rotate.

[0005] Preferably, the number of wind blades is two to twelve.

[0006] More preferably, the wind blades are provided with one to four layers along the length direction of the stator.

[0007] More preferably, the wind blades are provided in two layers along the length direction of the rotor, and the two layers of wind blades are arranged at equal intervals.

[0008] Preferably, the stator is in the shape of a stepped shaft, the inner cylinder of the rotor is provided with a coaxial stepped hole, and retaining rings are sleeved and fixed at both ends of the stator, and the retaining rings are clamped at the end faces of the first bearing and the second bearing.

[0009] Preferably, a fan cover is detachably mounted at the two ends of the stator extending out of the rotor, and the fan cover protects the rotor and wind blades.

[0010] Preferably, the fan cover is provided with front and rear air outlets.

[0011] More preferably, filter grilles are provided at the front and rear air outlets of the fan cover.

[0012] Preferably, three wire outlet holes are provided, and the wire outlet holes are evenly distributed around the circumference at the end of the stator.

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

[0014] The utility model adopts a cylindrical rotor to rotate around an axial stator, and bearings are arranged at both ends of the rotor. By supporting the rotor main shaft with double bearings, the problem of unbalanced rotation and swinging of a single bearing support at one end of the rotor is effectively solved. Therefore, a large-power and large-size fan adopting the structure of the utility model has better balance and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a high-power fan with a double-bearing support structure and a fan cover;

[0016] Figure 2 yes Figure 1 AA section view;

[0017] Figure 3 yes Figure 1 BB section view;

[0018] Figure 4 It is the axonometric drawing of the fan;

[0019] Figure 5 It is an axonometric view of the fan interior with the fan cover removed;

[0020] Figure 6 It is the internal axial cross-sectional view of the fan;

[0021] Figure 7 yes Figure 6 Exploded diagram of .

[0022] Among them, 1. stator; 2. rotor; 3. energized coil; 4. first bearing; 5. second bearing; 6. wind blades; 7. wire outlet hole; 8. retaining ring; 9. fan cover; 10. front and rear air outlets; 11. filter grille. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technologies in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] refer to Figures 1 to 7 The utility model discloses a high-power fan with a double-bearing support structure, comprising: a stator 1, a rotor 2 and an energized coil 3, wherein the stator 1 is shaft-shaped, the rotor 2 is cylindrical, the energized coil 3 is arranged around the outer circumferential wall of the stator 1, and the inner cylinder of the rotor 2 is annularly surrounded by the outer periphery of the stator 1 and the energized coil 3; a first bearing 4 and a second bearing 5 surrounding the stator 1 are arranged between the inner cylinder wall of the rotor 2 and the outer circumferential wall of the stator 1, the outer bearings of the first bearing 4 and the second bearing 5 are embedded in the inner cylinder of the rotor 2, and the inner bearings of the first bearing 4 and the second bearing 5 are sleeved on the outer circumferential wall of the stator 1, the first bearing 4 and the second bearing 5 are respectively arranged at both ends of the rotor 2, and the outer cylinder wall of the rotor 2 is provided with wind blades 6 uniformly distributed around the circumference and extending radially outward; a wire outlet hole 7 is arranged at the end of the stator 1, and the wire outlet hole 7 is connected to the inside and outside of the cylinder of the rotor 2; the rotating axis of the stator 1 and the rotating axis of the rotor 2 coincide; when the energized coil 3 is energized, a magnetic field is generated to drive the rotor 2 to rotate;

[0025] When the energized coil 3 is energized to drive the rotor 2 to rotate, since the rotor 2 is cylindrical and is in rolling contact with the stator 1 through bearings at the front and rear, the larger the power of the fan, the larger the size of the rotor 2. When the rotor 2 rotates, it is supported at the front and rear, so the stability and balance are better; when a high-power fan is needed, the rotor 2 can be made longer, and rolling support can be added between the first bearing 4 and the second bearing 5 to ensure that the longer rotor 2 still has good balance and stability.

[0026] Furthermore, the wind blades 6 are provided with two to twelve pieces; multiple rows of wind blades 6 can be arranged on the rotor 2 according to different needs, and each row of wind blades 6 is evenly distributed within the circumference of the row. A single row of wind blades 6 can be provided with two to six pieces. The fewer the number of pieces, the larger the size, and the more the number of pieces, the smaller the size.

[0027] Furthermore, the wind blades 6 are provided with one to four layers along the length direction of the stator 1 .

[0028] Furthermore, the wind blades 6 are provided in two layers along the length direction of the rotor 2, and the two layers of wind blades 6 are arranged at equal intervals.

[0029] Furthermore, the stator 1 is in the shape of a stepped shaft, the inner cylinder of the rotor 2 is provided with a coaxial stepped hole, and retaining rings 8 are sleeved and fixed at both ends of the stator 1, and the retaining rings 8 are blocked at the end faces of the first bearing 4 and the second bearing 5; the rotor 2 in the shape of a stepped hole is sleeved on the stator 1 in the shape of a stepped shaft, and after the position of the bearing is fixed by the retaining ring 8, the axial position of the stator 1 and the rotor 2 is determined, so the axial stability of the rotor 2 is better when rotating at high speed.

[0030] Furthermore, the fan cover 9 is detachably mounted at the two ends of the stator 1 extending out of the rotor 2, and the fan cover 9 covers the rotor 2 and the wind blades 6; the fan cover 9 is detachably mounted on the stator 1, and a mounting hole is provided on the fan cover 9. When the stator 1 can be installed in the installation link, the fan cover 9 is fixed by the stator 1. When the installation environment can only install the fan cover 9 but not the stator 1, the fan cover 9 is fixed in the rotation position, and then the stator 1 is fixed by the fan cover 9, thereby ensuring the rotation stability and reliability of the rotor 2.

[0031] Furthermore, the fan cover 9 is provided with front and rear air outlets 10 .

[0032] Furthermore, filter grilles 11 are provided at the front and rear air outlets 10 of the fan cover 9; the filter grilles 11 are used to prevent foreign matter from entering the interior of the fan and causing unnecessary losses.

[0033] Furthermore, three outlet holes 7 are provided, and the outlet holes 7 are evenly distributed around the circumference at the end of the stator 1; the outlet holes are used to place the wires led out from the electromagnetic coil 3 to prevent the wires from being damaged when the rotor 2 rotates. The three outlet holes can facilitate the three wires of the electromagnetic coil 3 to be led out separately, so the outlet holes 7 can be made smaller to prevent the wire holes from being too large and affecting the strength of the stator 1; in addition, the outlet holes 7 can also be set as a slot type, with an external sleeve to isolate the wires from the rotating part of the rotor 2, or the wires can be isolated from the rotating part of the rotor 2 through the bearing inner bush and the retaining ring 8.

[0034] Example

[0035] In this embodiment, the stator 1 is fixed on the fan cover 9 by the retaining rings 8 at both ends and the fixed cover plate. The rotor 2 is supported and rotated by the bearings at both ends. The stator 1 and the rotor 2 are driven to rotate by the magnetic induction of the energized coil 3, and the wind blades 6 are driven to rotate. Three U-shaped long grooves are opened at one end of the stator 1 as the outlet holes 7, and the internal cables of the stator 1 and the rotor 2 are led to the outside along the U-shaped groove of the main shaft of the stator 1. It is not affected by the rotation of the rotor 2.

[0036] To sum up, the utility model adopts a cylindrical rotor to rotate around an axial stator, and provides bearings at both ends of the rotor. By supporting the rotor main shaft with double bearings, the problem of unbalanced rotation and swinging of a single bearing support at one end of the rotor is effectively solved. Therefore, a large-power and large-size fan adopting the structure of the utility model has better balance and stability.

[0037] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-power fan with a double-bearing support structure, characterized in that: include: A stator (1), a rotor (2) and an energized coil (3), wherein the stator (1) is shaft-shaped, the rotor (2) is cylindrical, the energized coil (3) is arranged around the outer circumferential wall of the stator (1), and the inner cylinder of the rotor (2) annularly surrounds the outer periphery of the stator (1) and the energized coil (3); A first bearing (4) and a second bearing (5) surrounding the stator (1) are arranged between the inner cylinder wall of the rotor (2) and the outer circumferential wall of the stator (1); the outer bearings of the first bearing (4) and the second bearing (5) are embedded in the inner cylinder of the rotor (2); the inner bearings of the first bearing (4) and the second bearing (5) are sleeved on the outer circumferential wall of the stator (1); the first bearing (4) and the second bearing (5) are respectively arranged at two ends of the rotor (2); and the outer cylinder wall of the rotor (2) is provided with wind blades (6) evenly distributed around the circumference and extending outward in the radial direction; The end of the stator (1) is provided with a wire outlet hole (7), and the wire outlet hole (7) is connected to the inside and outside of the cylinder of the rotor (2); The rotation axis of the stator (1) and the rotation axis of the rotor (2) coincide with each other; When the energized coil (3) is energized, a magnetic field is generated to drive the rotor (2) to rotate.

2. A high-power fan with a dual-bearing support structure according to claim 1, characterized in that: The number of wind blades (6) is between two and twelve.

3. A high-power fan with a dual-bearing support structure according to claim 2, characterized in that: The wind blades (6) are provided in one to four layers along the cylinder length direction of the rotor (2).

4. A high-power fan with a dual-bearing support structure according to claim 3, characterized in that: The wind blades (6) are arranged in two layers along the cylinder length direction of the rotor (2), and the two layers of wind blades (6) are arranged at equal intervals.

5. A high-power fan with a dual-bearing support structure according to claim 1, characterized in that: The stator (1) is in the shape of a stepped shaft, the inner cylinder of the rotor (2) is provided with a coaxial stepped hole, and retaining rings (8) are sleeved and fixed at both ends of the stator (1), and the retaining rings (8) are blocked at the end faces of the first bearing (4) and the second bearing (5).

6. A high-power fan with a dual-bearing support structure according to claim 1, characterized in that: Also includes: A fan cover (9) is detachably mounted on the two ends of the stator (1) extending out of the rotor (2), and the fan cover (9) covers and protects the rotor (2) and the wind blades (6).

7. A high-power fan with a dual-bearing support structure according to claim 6, characterized in that: The fan cover (9) is provided with front and rear air outlets (10).

8. A high-power fan with a dual-bearing support structure according to claim 7, characterized in that: Filter grilles (11) are provided at the front and rear air outlets (10) of the fan cover (9).

9. A high-power fan with a dual-bearing support structure according to claim 1, characterized in that: Three wire outlet holes (7) are provided, and the wire outlet holes (7) are evenly distributed around the circumference at the ends of the stator (1).

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