CN216077682U - Axial fan speed control device - Google Patents
Axial fan speed control device Download PDFInfo
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- CN216077682U CN216077682U CN202122314157.XU CN202122314157U CN216077682U CN 216077682 U CN216077682 U CN 216077682U CN 202122314157 U CN202122314157 U CN 202122314157U CN 216077682 U CN216077682 U CN 216077682U
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Abstract
The utility model discloses an axial flow fan speed control device, which relates to the field of axial flow fans, and comprises a fixed base and an upper end shell, and also comprises: a speed adjustment mechanism comprising a drive device, a switching member, and a fan blade; the upper end shell is provided with a rotating shaft which is rotatably connected with the upper end shell, the fan blades are fixedly arranged on the rotating shaft, the rotating shaft is provided with a second driven gear and a first driven gear which are fixedly connected with the rotating shaft, the driving device is arranged on the upper end shell, the switching component comprises a rotating installation shaft which is rotatably arranged on the upper end shell, and the rotating installation shaft is provided with an adjusting gear which is fixedly connected with the rotating installation shaft.
Description
Technical Field
The utility model relates to the field of axial flow fans, in particular to a speed control device of an axial flow fan.
Background
The axial flow fan is a fan capable of generating airflow in the same direction as the axis of the fan blades, the output airflow of the axial flow fan is parallel to the fan blades, and the axial flow fan is widely applied to working places such as fire fighting and smelting due to the characteristic of the output airflow, the axial flow fan is commonly used for extracting thick smoke on a fire scene, and the characteristic of the generated parallel airflow has a good effect of reducing the smoke concentration on the fire scene.
Traditional axial fan speed control device is all through the rotational speed that changes motor self to the realization is to the regulation of flabellum rotational speed, in axial fan actual use, all need utilize its high rotational speed to work usually, and traditional drive mode only utilizes the motor to drive the flabellum and carries out high-speed rotation, makes the motor be in the commentaries on classics attitude that the high rotational speed accords with for a long time easily, makes the motor damage easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a speed control device of an axial flow fan, which aims to solve the problems that the traditional axial flow fan is single in speed control mode and easy to damage a motor.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides an axial fan speed control device, includes unable adjustment base and upper end casing, still includes:
a speed adjustment mechanism comprising a drive device, a switching member, and a fan blade;
the upper end shell is provided with a rotating shaft which is rotatably connected with the upper end shell, the fan blades are fixedly arranged on the rotating shaft, the rotating shaft is provided with a second driven gear and a first driven gear which are fixedly connected with the rotating shaft, the driving device is arranged on the upper end shell, the switching component comprises a rotating installation shaft which is rotatably arranged on the upper end shell, the rotating installation shaft is provided with an adjusting gear which is fixedly connected with the rotating installation shaft, the adjusting gear is meshed with the second driven gear and is connected with the second driven gear, the output end of the driving device is provided with a driving shaft, the driving device is used for driving the driving shaft to rotate, one end part of the rotating installation shaft is rotatably connected with the end part of the driving shaft, the driving shaft is provided with a connecting shaft sleeve which is in sliding connection with the driving shaft, and the connecting shaft sleeve is provided with a switching adjusting gear which is fixedly connected with the connecting shaft and is meshed with the first driven gear, the switching mechanism is characterized in that a connecting component which is matched with the adjusting gear is arranged between the adjusting gear and the switching adjusting gear, a driving element is further arranged on the upper end shell, and the driving element enables the switching adjusting gear to be meshed with the first driven gear or enables the switching adjusting gear to be connected with the adjusting gear through the connecting component in a mode that the driving element drives the switching adjusting gear to slide on a driving shaft.
In one alternative: the upper end shell is provided with a protective shell on the side wall, the driving device is fixedly installed on the side wall of the protective shell, and the driving element comprises an electromagnetic relay fixedly installed on the inner side wall of the protective shell and an annular magnet fixedly installed on the side wall of the switching adjusting gear.
In one alternative: the connecting component comprises a plurality of connecting bulges fixedly arranged on the side wall of the adjusting gear, and a plurality of matching grooves matched with the connecting bulges are arranged on the side wall of the switching adjusting gear.
In one alternative: the last air supply adjusting member that is used for adjusting flabellum air supply direction that still is provided with of unable adjustment base, the air supply adjusting member is installed including rotating the seat of rotating on the unable adjustment base, it just to rotate the fixed mounting seat that is provided with fixed connection with it on an end portion upper end casing fixed mounting is on the fixed mounting seat, it is provided with fixed connection's ring gear with it on the seat lateral wall to rotate, be provided with on the fixed mounting seat with it and rotate the regulation axis body of being connected and adjust the axis body and be provided with the adjusting gear who meshes mutually with the ring gear.
In one alternative: and a hand wheel fixedly connected with the end part of the adjusting shaft body is also arranged on the end part of the adjusting shaft body.
Compared with the prior art, the utility model has the following beneficial effects:
when the whole device is put into use, the whole device is fixed at a proper position through the fixing base, the driving device works to drive the driving shaft to rotate, when the driving shaft rotates, the switching adjusting gear is meshed with the first driven gear to drive the rotating shaft to rotate, so that fan blades on the rotating shaft are driven to rotate, when the wind speed needs to be increased, the driving element drives the switching adjusting gear to slide on the driving shaft in a direction close to the adjusting gear, finally the switching adjusting gear is separated from the first driven gear, the switching adjusting gear is connected with the adjusting gear through the connecting component, and when the switching adjusting gear and the adjusting gear are switched, the adjusting gear drives the rotating shaft to rotate through the second driven gear meshed with the adjusting gear, so that the purpose of increasing the rotating speed of the fan blades is achieved.
According to the utility model, the motor can provide stable rotating speed, the aim of adjusting the rotating speed of the fan blades is achieved by mutually matching different connecting gears, and the damage of long-time overload work of the motor caused by rotating speed increase to the motor can be effectively avoided.
Drawings
Fig. 1 is a schematic view of the overall structure in one embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the front and back side structures of the switching regulating gear in one embodiment of the utility model.
Notations for reference numerals: the device comprises a fixed base 1, an upper end shell 2, a protective shell 3, a rotating shaft 4, a first driven gear 5, a second driven gear 6, a motor 8, fan blades 11, a rotating seat 12, a fixed mounting seat 13, a gear ring 14, an adjusting gear 15, an adjusting shaft body 16, a hand wheel 17, a rotating mounting shaft 18, an adjusting gear 19, a connecting protrusion 20, a switching adjusting gear 21, an electromagnetic relay 22, an annular magnet 23, a connecting shaft sleeve 24, a driving shaft 25 and a matching groove 26.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments; in the drawings or the description, the same reference numerals are used for similar or identical parts, and the shape, thickness or height of each part may be enlarged or reduced in practical use. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
In one embodiment, as shown in fig. 1 and fig. 2, the speed control device for an axial flow fan provided by the present invention includes a fixed base 1 and an upper end housing 2, and further includes:
a speed adjusting mechanism including a driving device, a switching member, and fan blades 11;
the upper end shell 2 is provided with a rotating shaft 4 which is rotatably connected with the upper end shell 2, the fan blades 11 are fixedly installed on the rotating shaft 4, the rotating shaft 4 is provided with a second driven gear 6 and a first driven gear 5 which are fixedly connected with the rotating shaft 4, the driving device is installed on the upper end shell 2, the switching component comprises a rotating installation shaft 18 which is rotatably installed on the upper end shell 2, an adjusting gear 19 which is fixedly connected with the rotating installation shaft 18 is arranged on the rotating installation shaft 18, the adjusting gear 19 is meshed with the second driven gear 6, the output end of the driving device is provided with a driving shaft 25, the driving device is used for driving the driving shaft 25 to rotate, one end part of the rotating installation shaft 18 is rotatably connected with the end part of the driving shaft 25, the driving shaft 25 is provided with a connecting shaft sleeve 24 which is slidably connected with the driving shaft 25, and the connecting shaft sleeve 24 is provided with a switching adjusting gear 21 which is fixedly connected with the connecting shaft sleeve 24 and meshed with the first driven gear 5, a connecting component which is matched with each other is arranged between the adjusting gear 19 and the switching adjusting gear 21, a driving element is further arranged on the upper end shell 2, and the driving element enables the switching adjusting gear 21 to be meshed with the first driven gear 5 or enables the switching adjusting gear 21 to be connected with the adjusting gear 19 through the connecting component in a mode that the switching adjusting gear 21 is driven to slide on a driving shaft 25;
when the whole device is put into use, firstly, the whole device is fixed on a proper position through the fixed base 1, the driving device works to drive the driving shaft 25 to rotate, when the driving shaft 25 rotates, the rotating shaft 4 is driven to rotate through the meshing of the switching adjusting gear 21 and the first driven gear 5, so as to drive the fan blades 11 on the rotating shaft 4 to rotate, when the wind speed needs to be increased, the driving element drives the switching adjusting gear 21 to slide on the driving shaft 25 to the direction close to the adjusting gear 19, finally, the switching adjusting gear 21 is separated from the first driven gear 5, and the switching adjusting gear 21 is connected with the adjusting gear 19 through a connecting component, at the moment, when the driving device works, the switching adjusting gear 21 and the adjusting gear 19 are driven to simultaneously rotate through the driving shaft 25, the adjusting gear 19 drives the rotating shaft 4 to rotate through the meshing with the second driven gear 6, because the number of teeth of the adjusting gear 19 is greater than that of the switching adjusting gear 21, and the number of teeth of the second driven gear 6 meets that of the first driven gear 5, when the driving shaft 25 rotates, the rotating speed of the adjusting gear 19 driving the rotating shaft 4 to rotate is greater than that of the switching adjusting gear 21 driving the rotating shaft 4 to rotate, thereby achieving the purpose of increasing the rotating speed of the fan blades 11;
in one embodiment, as shown in fig. 1 and fig. 2, a protective shell 3 is disposed on a side wall of the upper end shell 2, the driving device is fixedly mounted on a side wall of the protective shell 3, and the driving element includes an electromagnetic relay 22 fixedly mounted on an inner side wall of the protective shell 3 and a ring magnet 23 fixedly mounted on a side wall of the switching adjustment gear 21;
in the embodiment of the utility model, when the electromagnetic relay 22 is switched on with currents in different directions, acting forces in different directions are generated between the electromagnetic relay and the annular magnet 23, and at the moment, the switching adjusting gear 21 is driven to slide on the driving shaft 25 in a reciprocating manner, so that the switching adjusting gear 21 is meshed with the first driven gear 5 or the switching adjusting gear 21 is connected with the adjusting gear 19 through a connecting component;
the driving device can be a servo motor or a pneumatic motor for driving the driving shaft 25 to rotate, and is preferably set as the motor 8 in the embodiment;
in one embodiment, as shown in fig. 2, the connecting member includes a plurality of connecting protrusions 20 fixedly mounted on a side wall of the adjusting gear 19, and a plurality of engaging grooves 26 matched with the connecting protrusions 20 are provided on a side wall of the switching adjusting gear 21;
in the embodiment of the present invention, when the switching adjustment gear 21 moves to a direction close to the adjustment gear 19, the switching adjustment gear 21 will connect the adjustment gear 19 and the switching adjustment gear 21 through the engagement of the connecting protrusion 20 and the engaging groove 26, and when the driving shaft 25 rotates, the blade 11 on the rotating shaft 4 will be driven to rotate through the engagement of the adjustment gear 19 and the second driven gear 6;
in one embodiment, as shown in fig. 1, an air supply adjusting member for adjusting the air supply direction of the fan blades 11 is further disposed on the fixed base 1, the air supply adjusting member includes a rotating base 12 rotatably mounted on the fixed base 1, a fixed mounting base 13 fixedly connected to the rotating base 12 is disposed on one end of the rotating base 12, the upper housing 2 is fixedly mounted on the fixed mounting base 13, a gear ring 14 fixedly connected to the rotating base 12 is disposed on a side wall of the rotating base 12, an adjusting shaft 16 rotatably connected to the fixed mounting base 13 is disposed on the fixed mounting base 13, and an adjusting gear 15 engaged with the gear ring 14 is disposed on the adjusting shaft 16;
in the embodiment of the present invention, the rotation of the adjusting shaft 16 will drive the rotating base 12 to rotate on the fixed base 1 through the cooperation of the adjusting gear 15 and the gear ring 14, and the rotation of the rotating base 12 will drive the fixed mounting base 13 and the upper end housing 2 to rotate, so as to adjust the air supply direction of the fan blades 11;
in one embodiment, as shown in fig. 1, a hand wheel 17 fixedly connected with the end of the adjusting shaft 16 is further provided on the end;
in the embodiment of the utility model, the adjusting shaft body 16 can be driven to rotate by rotating the hand wheel 17, so that the operation of an operator is facilitated.
The specific working mode is as follows:
when the whole device is put into use, firstly, the whole device is moved to a proper position through the fixed base 1, the motor 8 works to drive the driving shaft 25 to rotate, when the driving shaft 25 rotates, the rotating shaft 4 is driven to rotate through the meshing of the switching adjusting gear 21 and the first driven gear 5, so as to drive the fan blades 11 on the rotating shaft 4 to rotate, when the wind speed needs to be increased, the switching adjusting gear 21 is driven to slide on the driving shaft 25 to the direction close to the adjusting gear 19 through the interaction force between the switching adjusting gear 21 and the first driven gear 5, finally, the switching adjusting gear 21 is separated from the first driven gear 5, the switching adjusting gear 21 and the adjusting gear 19 are connected with the matching groove 26 through the matching of the connecting bulge 20, at the moment, when the motor 8 works, the switching adjusting gear 21 and the adjusting gear 19 are driven to rotate simultaneously through the driving shaft 25, the adjusting gear 19 drives the rotating shaft 4 to rotate through the meshing with the second driven gear 6, because of adjusting gear 19's number of teeth is greater than the number of teeth that switches adjusting gear 21, No. two driven gear 6's number of teeth is less than a driven gear 5's number of teeth, so when drive shaft 25 rotates, the rotational speed of adjusting gear 19 drive axis of rotation 4 when rotating is greater than the rotational speed of switching adjusting gear 21 drive axis of rotation 4 when rotating, thereby reach the purpose that promotes flabellum 11 rotational speed, when needs turn down the wind speed, electromagnetic relay 22 direction circular telegram, drive switching adjusting gear 21 and adjusting gear 19 separation, and make switching adjusting gear 21 and a driven gear 5 meshing drive axis of rotation 4 and rotate, thereby the rotational speed to axis of rotation 4 is down-regulated.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides an axial fan speed control device, includes unable adjustment base and upper end casing, its characterized in that still includes:
a speed adjustment mechanism comprising a drive device, a switching member, and a fan blade;
the upper end shell is provided with a rotating shaft which is rotatably connected with the upper end shell, the fan blades are fixedly arranged on the rotating shaft, the rotating shaft is provided with a second driven gear and a first driven gear which are fixedly connected with the rotating shaft, the driving device is arranged on the upper end shell, the switching component comprises a rotating installation shaft which is rotatably arranged on the upper end shell, the rotating installation shaft is provided with an adjusting gear which is fixedly connected with the rotating installation shaft, the adjusting gear is meshed with the second driven gear and is connected with the second driven gear, the output end of the driving device is provided with a driving shaft, the driving device is used for driving the driving shaft to rotate, one end part of the rotating installation shaft is rotatably connected with the end part of the driving shaft, the driving shaft is provided with a connecting shaft sleeve which is in sliding connection with the driving shaft, and the connecting shaft sleeve is provided with a switching adjusting gear which is fixedly connected with the connecting shaft and is meshed with the first driven gear, the switching mechanism is characterized in that a connecting component which is matched with the adjusting gear is arranged between the adjusting gear and the switching adjusting gear, a driving element is further arranged on the upper end shell, and the driving element enables the switching adjusting gear to be meshed with the first driven gear or enables the switching adjusting gear to be connected with the adjusting gear through the connecting component in a mode that the driving element drives the switching adjusting gear to slide on a driving shaft.
2. The axial flow fan speed control device according to claim 1, wherein a protective casing is disposed on the upper end casing side wall, the driving device is fixedly mounted on the protective casing side wall, and the driving element includes an electromagnetic relay fixedly mounted on the inner side wall of the protective casing and a ring magnet fixedly mounted on the switching adjustment gear side wall.
3. The axial flow fan speed control device according to claim 2, wherein the connection member includes a plurality of connection protrusions fixedly installed on a side wall of the adjustment gear, and the switching adjustment gear is provided with a plurality of fitting grooves to be fitted with the connection protrusions on the side wall.
4. The axial flow fan speed control device according to claim 1, wherein the fixed base is further provided with an air supply adjusting member for adjusting an air supply direction of the fan blades, the air supply adjusting member includes a rotating seat rotatably mounted on the fixed base, one end of the rotating seat is provided with a fixed mounting seat fixedly connected with the rotating seat, the upper end housing is fixedly mounted on the fixed mounting seat, a side wall of the rotating seat is provided with a gear ring fixedly connected with the rotating seat, the fixed mounting seat is provided with an adjusting shaft body rotatably connected with the fixed mounting seat, and the adjusting shaft body is provided with an adjusting gear engaged with the gear ring.
5. The axial flow fan speed control device of claim 4, wherein the end of the adjustment shaft is further provided with a hand wheel fixedly connected thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122314157.XU CN216077682U (en) | 2021-09-24 | 2021-09-24 | Axial fan speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122314157.XU CN216077682U (en) | 2021-09-24 | 2021-09-24 | Axial fan speed control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216077682U true CN216077682U (en) | 2022-03-18 |
Family
ID=80678415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122314157.XU Active CN216077682U (en) | 2021-09-24 | 2021-09-24 | Axial fan speed control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216077682U (en) |
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2021
- 2021-09-24 CN CN202122314157.XU patent/CN216077682U/en active Active
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