Explosion-proof variable-frequency oscillating fan

Abstract

The utility model discloses an explosion-proof variable-frequency oscillating fan, which comprises an explosion-proof fan head, a driving component and a support, and is characterized in that the driving component comprises an explosion-proof motor group and an oscillating transmission mechanism, the explosion-proof motor group comprises a driving motor and an oscillating motor, the driving motor and the oscillating motor are fixedly arranged in an explosion-proof shell, and the oscillating transmission mechanism is arranged on the explosion-proof shell. The front end of the driving motor is in driving connection with the explosion-proof fan head, the head shaking motor drives the explosion-proof fan head through the head shaking transmission mechanism, the head shaking transmission mechanism is connected with the support, and when the head shaking motor is started, the head shaking transmission mechanism is driven to work and drives the whole explosion-proof motor set to swing, so that the explosion-proof fan head shakes and swings. The oscillating fan adopts two groups of motors and a specially designed oscillating transmission mechanism to separate a main machine from the oscillating motor, so that the load of the main motor is reduced, the service life of the motor is prolonged, and the efficiency of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an explosion-proof variable-frequency oscillating fan. Background Art

[0002] An explosion-proof fan is a device applied in the industrial field. Such a fan generates an air flow through fan blades in a relatively dangerous working environment with explosive gases, dust, etc., and discharges the hot air in the working environment, thereby playing a role in cooling to protect the safety of the equipment.

[0003] When using an explosion-proof fan, if centralized heat dissipation and cooling are required, the explosion-proof fan will be concentrated in a fixed area for blowing to improve the heat dissipation performance. When the working site is large or large-scale cooling is required, the function of the fan oscillating will be considered to enable the fan to discharge hot air as widely as possible in the working environment. Currently, when the common explosion-proof fan oscillates, the oscillating plug pin of the fan needs to be pulled out and then the fan oscillates. When the fan needs to be fixed, the oscillating plug pin needs to be reinstalled after the fan swings to a suitable position. When centralized heat dissipation is required at different positions, the orientation of the fan also needs to be adjusted specifically, and the operation is rather troublesome. At the same time, such a fan is driven by a single explosion-proof motor, resulting in a large load on the explosion-proof motor, thus affecting the performance and service life of the product. Therefore, it is necessary to design an explosion-proof fan that is more suitable for use in the working environment of explosion-proof equipment, has stable performance, a long product life, and higher cost performance, and solves the problems of troublesome operation and adjustment and large motor load of the explosion-proof fan. Summary of the Utility Model

[0004] In view of the deficiencies of the background art, the technical problem to be solved by the utility model is to provide an explosion-proof variable-frequency oscillating fan, the oscillating and positioning operations of which are convenient, the driving motor and the oscillating motor are used separately, the load on the main motor is reduced, the service life of the motor is prolonged, and the efficiency of the product is improved.

[0005] To this end, the utility model is implemented by the following technical solutions: an explosion-proof variable-frequency oscillating fan, including an explosion-proof fan head, a driving assembly and a support. It is characterized in that: the driving assembly includes an explosion-proof motor group and an oscillating transmission mechanism. The explosion-proof motor group includes a driving motor and an oscillating motor. The driving motor and the oscillating motor are fixedly installed in an explosion-proof housing. The front end of the driving motor is drivingly connected to the explosion-proof fan head. The oscillating motor drives the explosion-proof fan head through the oscillating transmission mechanism. The oscillating transmission mechanism is connected to the support. When the oscillating motor is started, it drives the oscillating transmission mechanism to work, and the oscillating transmission mechanism drives the entire explosion-proof motor group to swing, so that the explosion-proof fan head swings.

[0006] Furthermore, the shaking transmission mechanism includes a front rotating shaft, a rear rotating shaft, a shaking bracket, and a connecting rod. The upper end of the rear rotating shaft passes through the explosion-proof housing and is connected to the shaking motor. The lower end of the rear rotating shaft is hinged to one end of the connecting rod through a shaking adapter. The upper end of the front rotating shaft is connected to the explosion-proof housing. The lower end of the front rotating shaft is rotatably connected to the shaking bracket. The other end of the connecting rod is hinged to the shaking bracket. The bottom of the shaking bracket is installed on the support.

[0007] Furthermore, the shaking adapter includes an adapter body and a connecting arm extending outward from the adapter body. The rear rotating shaft is installed on the adapter body. The connecting arm is hinged to one end of the connecting rod. When the rear rotating shaft rotates, the hinged arm rotates around the rear rotating shaft and drives the connecting rod to rotate.

[0008] Furthermore, the connecting rod is designed in an S shape.

[0009] Furthermore, one side of the front end of the shaking bracket has a hinge seat. The other end of the connecting rod is hinged to the hinge seat.

[0010] Furthermore, the shaking motor and the driving motor are respectively connected to an external explosion-proof control box through wires. The explosion-proof control box controls the working states of the shaking motor and the driving motor.

[0011] Furthermore, the explosion-proof housing is successively composed of a front cover, a housing, and a rear cover. The rear cover is detachably connected to the rear end of the housing. The driving motor is installed in the housing. The front end of the transmission shaft of the driving motor passes through the front cover and is connected to the explosion-proof fan head. The shaking motor is installed at the rear cover.

[0012] Furthermore, threaded openings are provided on the sides of the housing and the rear cover. The threaded openings are connected with threaded flameproof joints. The wires of the shaking motor and the driving motor respectively pass through the corresponding threaded flameproof joints and are connected to an external explosion-proof control box, and are sealed with epoxy resin glue.

[0013] Furthermore, an opening is provided at the rear cover. The upper end of the rear rotating shaft passes through the opening and is connected to the shaking motor. There is a groove on the housing. The upper end of the front rotating shaft is fixedly installed in the groove.

[0014] Furthermore, a plurality of explosion-proof reinforcing ribs are provided on the surface of the explosion-proof housing. The explosion-proof reinforcing ribs are strip-shaped protrusions.

[0015] After adopting the above technical solutions, the beneficial effects are as follows:

[0016] 1. In the drive assembly of this explosion-proof variable-frequency oscillating fan, two motors are adopted, which are divided into the main motor for controlling the fan and the oscillating motor for controlling the oscillation. During use, it can effectively reduce the load of the main motor, extend the service life of the motor, and improve the efficiency of the product; the oscillating motor is used alone, which is convenient for users to turn on and off the oscillation function of the explosion-proof variable-frequency oscillating fan, reducing the procedure of additionally unplugging and inserting the oscillation plug in the prior art, making the operation more convenient.

[0017] 2. In the oscillation transmission mechanism of this explosion-proof variable-frequency oscillating fan, an S-shaped connecting rod is used. When the oscillation function is used, the S-shaped connecting rod can follow the rotation of the rear rotating shaft more flexibly, so that the entire explosion-proof motor group drives the explosion-proof fan head to swing flexibly.

[0018] An explosion-proof housing is arranged outside the explosion-proof motor group, and a threaded flameproof joint surface is arranged at the opening, so that the whole oscillating fan has explosion-proof performance. Brief Description of the Drawings

[0019] The present utility model has the following drawings:

[0020] Figure 1 It is a schematic side structure diagram of the explosion-proof variable-frequency oscillating fan;

[0021] Figure 2 It is a schematic rear structure diagram of the explosion-proof variable-frequency oscillating fan;

[0022] Figure 3 It is a schematic front structure diagram of the explosion-proof motor of the explosion-proof variable-frequency oscillating fan;

[0023] Figure 4 It is a main perspective sectional view of the explosion-proof housing of the explosion-proof variable-frequency oscillating fan;

[0024] Figure 5 It is a schematic structure diagram of the oscillation transmission mechanism of the explosion-proof variable-frequency oscillating fan;

[0025] Figure 6 It is a top view of the explosion-proof housing of the explosion-proof variable-frequency oscillating fan.

[0026] Reference Signs: 1. Housing; 2. Rear Cover; 3. Oscillating Motor; 4. Driving Motor; 5. Oscillating Adapter; 6. Rear Rotating Shaft; 7. Front Rotating Shaft; 8. Connecting Rod; 9. Oscillating Bracket; 10. Ball Rolling Bearing; 11. Support Rod; 12. Conducting Wire; 13. Explosion-proof Control Box; 14. Front Cover; 15. Explosion-proof Fan Head; 16. Base; 17. Explosion-proof Reinforcing Rib; 18. Interlayer; 19. Oscillating Motor Base; 20. Threaded Flameproof Joint Surface. Detailed Description of the Invention

[0027] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0028] Referring to Figure 1-6 As shown, the explosion-proof variable-frequency oscillating fan provided by the first embodiment of the present utility model includes an explosion-proof fan head 15, a driving assembly, a support rod 11 and a support. The support includes a support rod 11 and a base 16. The driving assembly includes an explosion-proof motor group and a swing transmission mechanism. The explosion-proof motor group includes a driving motor 4 and a swing motor 3. The driving motor 4 and the swing motor 3 are fixedly installed in an explosion-proof housing. The front end of the driving motor 4 is drivingly connected to the explosion-proof fan head 15. The swing motor 3 drives the explosion-proof fan head 15 through the swing transmission mechanism. The swing transmission mechanism is connected to the support. When the swing motor 3 is started, it drives the swing transmission mechanism to work, driving the entire explosion-proof motor group to swing, so that the explosion-proof fan head 15 swings.

[0029] The swing transmission mechanism includes a front rotating shaft 7, a rear rotating shaft 6, a swing bracket 9 and a connecting rod 8. The swing bracket 9 is arranged at the upper end of the support rod 11. The upper end of the rear rotating shaft 6 passes through the explosion-proof housing and is connected to the swing motor 3. The lower end of the rear rotating shaft 6 passes through a swing adapter 5 and is hinged to one end of the connecting rod 8. The upper end of the front rotating shaft 7 is connected to the explosion-proof housing. The lower end of the front rotating shaft 7 is rotatably connected to the swing bracket 9. The bottom of the swing bracket 9 is installed on the support. One side of the front end of the swing bracket 9 has a hinge seat. The other end of the connecting rod 8 is hinged to the hinge seat through a ball bearing 10.

[0030] The swing adapter 5 includes an adapter body and a connecting arm extending outward from the adapter body. The rear rotating shaft 6 is installed on the adapter 5 body. The connecting arm is hinged to one end of the connecting rod 8 through a ball bearing 10. When the rear rotating shaft 6 rotates, the hinge arm rotates around the rear rotating shaft 6 and drives the connecting rod 8 to rotate.

[0031] The explosion-proof motor group is arranged in the explosion-proof housing. Multiple explosion-proof reinforcing ribs 17 are provided on the surface of the explosion-proof housing. The explosion-proof reinforcing ribs 17 are strip-shaped protrusions. The explosion-proof housing is composed of a front cover 14, a housing 1 and a rear cover 2 in sequence. The rear cover 2 is detachably connected to the rear end of the housing 1. The driving motor 4 is installed in the housing 1. The front end of the transmission shaft of the driving motor 4 passes through the front cover and is connected to the explosion-proof fan head 15. The swing motor 3 is installed at the rear cover 2.

[0032] The driving motor 4 is arranged inside the housing 1. A partition layer 18 is provided inside the housing 1. An opening for the circuit to pass through is provided on the partition layer 18. The driving motor 4 passes through the front cover 14 and is connected to the explosion-proof fan head 15. The circuit of the driving motor 4 passes through the opening of the partition layer to fix the driving motor 4. A groove is provided at the lower end of the housing 1. The front rotating shaft 7 is inserted into the groove and connected to the housing 1.

[0033] The swing motor 3 is arranged on the rear cover 2. An opening is provided at the rear cover 2. The upper end of the rear rotating shaft 6 passes through the opening and is connected to the swing motor 3. A groove is provided on the housing 1. The upper end of the front rotating shaft 7 is fixedly installed in the groove.

[0034] Threaded openings are provided on the sides of the housing 1 and the rear cover 2. The threaded openings are connected to the threaded explosion-proof joint surface 20. The wires 12 of the driving motor 4 and the swing motor 3 respectively pass through the corresponding threaded explosion-proof joint surfaces 20 and are connected to the external explosion-proof control box 13, and are sealed with epoxy resin glue. The explosion-proof control box 13 controls the working states of the swing motor 3 and the driving motor 4.

[0035] After adopting the above technical solution, when the installed explosion-proof variable-frequency swing fan is powered on, operate the explosion-proof control box 13 to start the driving motor 4, and the driving motor 4 controls the rotation of the explosion-proof fan head 15. When the fan works in a working environment that requires multi-directional heat dissipation, operate the explosion-proof control box 13 to turn on the swing function. At this time, the swing motor 3 starts, causing the rear rotating shaft 6 and the swing adapter 5 connected to the rear rotating shaft to rotate, and driving one end of the connecting rod 8 hinged to the spherical roller bearing 10 on the articulated arm of the swing adapter. The articulated arm rotates around the rear rotating shaft 6. The other end of the connecting rod 8 is hinged to the swing bracket 9 through the spherical roller bearing 10. The swing bracket 9 is fixedly arranged, and the end of the connecting rod 8 hinged to the swing bracket 9 does not move, causing the explosion-proof motor to deflect left and right with the front rotating shaft 7 as the rotation axis, realizing the swing function of the explosion-proof fan.

[0036] When the swing motor drives the articulated arm of the swing adapter to rotate forward in front of the rear rotating shaft, during the forward rotation of the end of the S-shaped connecting rod hinged to the articulated arm, the S-shaped connecting rod 8 will exert a rightward thrust on the rear rotating shaft 6, that is, a rightward thrust on the rear cover of the explosion-proof motor, causing the explosion-proof motor set to drive the explosion-proof fan head 15 to gradually deflect to the right, so that the explosion-proof fan head 15 can blow air to the left. When the articulated arm of the swing adapter 5 turns to the rear of the rear rotating shaft 6, the explosion-proof motor set drives the explosion-proof fan head 15 to gradually deflect to the left, so that the explosion-proof fan head 15 turns to blow air to the right, and this state is repeated cyclically. Since the swing function is driven by a separate swing motor 3, when the swing is not required, the swing motor 3 can be directly selected to be turned off, reducing the procedure in the prior art of unplugging and plugging the swing pin of the explosion-proof fan to control the swing of the fan. At the same time, in the explosion-proof motor of this solution, the drive motor 4 and the swing motor 3 are arranged in the explosion-proof housing. The explosion-proof performance of the housing is improved by methods such as setting explosion-proof reinforcing ribs 17 on the surface, so that the explosion-proof housing can meet the regulations of the explosion-proof national standard GB3836, and the explosion-proof motor has the explosion-proof ability that meets the standard. This explosion-proof variable-frequency swing fan can reduce the operations of swinging and fixing the fan during use, is more convenient to use, and is designed with two groups of motor drives, reducing the load on the main motor, making the product performance better and more durable.

[0037] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to it as equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. The explosion-proof variable frequency oscillating fan includes an explosion-proof fan head, a drive assembly and a support, and is characterized by: The driving component includes an explosion-proof motor unit and an oscillating head transmission mechanism. The explosion-proof motor unit includes a driving motor and an oscillating head motor. The driving motor and the oscillating head motor are fixedly installed in the explosion-proof casing. The front end of the driving motor is connected to the explosion-proof fan head driving device. The oscillating head motor drives the explosion-proof fan head through the oscillating head transmission mechanism. The oscillating head transmission mechanism is connected to the support. When the oscillating head motor is started, the oscillating head transmission mechanism is driven to work. The oscillating head transmission mechanism drives the entire explosion-proof motor unit to swing, so that the explosion-proof fan head shakes.

2. The explosion-proof variable frequency oscillating fan according to claim 1 is characterized in that: The shaking head transmission mechanism includes a front rotating shaft, a rear rotating shaft, a shaking head bracket and a connecting rod. The upper end of the rear rotating shaft passes through the explosion-proof shell and is connected to the shaking head motor. The lower end of the rear rotating shaft is hinged to one end of the connecting rod through a shaking head adapter. The upper end of the front rotating shaft is connected to the explosion-proof shell. The lower end of the front rotating shaft can be rotatably connected to the shaking head bracket. The other end of the connecting rod is hinged to the shaking head bracket. The bottom of the shaking head bracket is installed on a support.

3. The explosion-proof variable frequency oscillating fan according to claim 2 is characterized in that: The oscillating adapter includes an adapter body and a connecting arm extending outward from the adapter body. The rear shaft is installed on the adapter body. The connecting arm is hinged to one end of the connecting rod. When the rear shaft rotates, the hinged arm rotates around the rear shaft and drives the connecting rod to rotate.

4. The explosion-proof variable frequency oscillating fan according to claim 2 or 3 is characterized in that: The connecting rod is designed to be S-shaped.

5. The explosion-proof variable frequency oscillating fan according to claim 4 is characterized in that: A hinge seat is provided on one side of the front end of the shaking bracket, and the other end of the connecting rod is hinged on the hinge seat.

6. The explosion-proof variable frequency oscillating fan according to claim 3 is characterized in that: The shaking head motor and the driving motor are respectively connected to an external explosion-proof control box through wires, and the explosion-proof control box controls the working states of the shaking head motor and the driving motor.

7. The explosion-proof variable frequency oscillating fan according to claim 1 or 2 or 3 or 5 or 6 is characterized in that: The explosion-proof casing is composed of a front cover, a shell and a rear cover in sequence. The rear cover is detachably connected to the rear end of the shell. The drive motor is installed in the shell. The front end of the drive shaft of the drive motor passes through the front cover and is connected to the explosion-proof fan head. The shaking motor is installed at the rear cover.

8. The explosion-proof variable frequency oscillating fan according to claim 7 is characterized in that: The shell and the side of the back cover are both provided with threaded openings, the threaded openings are connected with threaded explosion-proof joint surfaces, the shaking motor wires and the driving motor wires respectively pass through the corresponding threaded explosion-proof joint surfaces and are connected to the external explosion-proof control box, and are sealed with epoxy resin.

9. The explosion-proof variable frequency oscillating fan according to claim 8 is characterized in that: An opening is arranged at the rear cover, and the upper end of the rear rotating shaft passes through the opening to be connected with the shaking motor. A groove is arranged on the shell, and the upper end of the front rotating shaft is fixedly installed in the groove.

10. The explosion-proof variable frequency oscillating fan according to claim 8 or 9, characterized in that: A plurality of explosion-proof reinforcing ribs are arranged on the surface of the explosion-proof housing, and the explosion-proof reinforcing ribs are strip-shaped protrusions.

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