CN217363622U

CN217363622U - Local fan has frequency conversion speed adjusting device of ventilation blast resistant construction

Info

Publication number: CN217363622U
Application number: CN202220671624.6U
Authority: CN
Inventors: 李宏业; 王星; 王鹏; 高俊强; 刘强; 薛超宏
Original assignee: Novenke Intelligent Ventilation Research Institute Xi'an Co ltd
Current assignee: Novenke Intelligent Ventilation Research Institute Xi'an Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-02
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to the technical field of variable frequency speed adjusting device, and discloses a variable frequency speed adjusting device with a ventilation explosion-proof structure for a local fan, which comprises a speed adjusting box and a protective box arranged in the speed adjusting box, wherein the protective box comprises a box body and heat dissipation holes arranged on the outer side of the box body, the inner side of the box body is provided with a ventilation groove, the box body comprises an explosion-proof plate and installation parts arranged on two sides of the explosion-proof plate, the inner side of the installation parts is provided with a movable push plate, one side of the movable push plate is filled with fire extinguishing powder, the other side of the movable push plate is provided with a telescopic spring, when the speed adjusting device is used, the speed adjusting device can be protected in the box body, if the internal device generates short circuit, the setting of a fire-proof layer can avoid the fire spread, meanwhile, if the fire extinguishing powder arranged in the internal device is pushed out by the movable push plate, and then the fire extinguishing powder covers the upper end of the internal device, the device is prevented from being exploded to damage other devices, the use is safer.

Description

Local fan has frequency conversion speed adjusting device of ventilation blast resistant construction

Technical Field

The utility model relates to a variable frequency speed device technical field specifically is a local fan has variable frequency speed device of ventilation explosion-proof construction.

Background

When the local fan is used, a variable frequency speed regulation device is required to be used for controlling the local fan, wherein the variable frequency speed regulation device is composed of a frequency converter (or called a main loop) and a controller (a control loop). The frequency converter receives three-phase power (380V and 50Hz) and converts the three-phase power into the frequency-adjustable three-phase power, namely, the basic principle of the variable frequency speed control system is according to a relation characteristic expression of the rotating speed of the motor and the input frequency. The purpose of changing the rotating speed of the motor is achieved by changing the frequency value of the three-phase power supply supplied to the motor.

However, if the variable frequency speed control device works, the internal equipment is short-circuited and easily catches fire or even explodes, and one of the equipment explodes, which may cause damage to other equipment in the device, and thus the device is not safe enough and inconvenient to use.

The above problems are addressed. Therefore, the frequency conversion speed regulating device with the ventilation anti-explosion structure for the local fan is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a local fan has ventilation explosion-proof structure's variable frequency speed device, when using the speed governing case, can fix speed governing equipment inside the box body, install the box body inside the inside mounting hole of speed governing case again, when speed governing equipment uses, can protect it inside the box body, louvre and the crisscross installation of ventilation groove, make things convenient for speed governing equipment to dispel the heat, if the short circuit takes place for the internal plant, the intensity of a fire can be avoided stretching in setting up of flame retardant coating, simultaneously the flame retardant coating if destroyed, the powder of putting out a fire of inside setting is released by the activity push pedal, and then the powder of putting out a fire covers in the internal plant upper end, avoid equipment to catch fire, the setting of explosion-proof board can avoid equipment to explode and damage other equipment, it is safer to use, thereby the problem in the above-mentioned background art has been solved.

In order to achieve the above object, the utility model provides a following technical scheme: a frequency conversion speed regulation device with a ventilation and explosion-proof structure for a local fan comprises a speed regulation box and a protection box arranged in the speed regulation box, wherein the protection box comprises a box body and heat dissipation holes formed in the outer side of the box body, and a ventilation groove is formed in the inner side of the box body;

the box body includes explosion-proof board and installs the installed part in explosion-proof board both sides, and the inboard of installed part is provided with movable push pedal, and one side packing of activity push pedal has the powder of putting out a fire, and the opposite side of activity push pedal is provided with expanding spring.

Preferably, the outer side of the mounting part is provided with a fireproof layer, and the telescopic spring is arranged in a contraction mode.

Preferably, the box body is a part with a hollow inner wall, and the heat dissipation holes and the ventilation grooves are respectively arranged on two sides and are installed in a staggered mode.

Preferably, a ventilating fan is arranged on the inner wall of the speed regulating box, a mounting hole is formed in the upper end of a back plate of the speed regulating box, and an air suction hole is formed in the outer wall of the speed regulating box and communicated with the ventilating fan.

Preferably, the two sides of the box body are provided with fixing feet, and the fixing feet are matched with the mounting holes in position.

Preferably, the upper end of the speed regulating box is provided with a heat dissipation groove, a dustproof unit is arranged in the heat dissipation groove, a dust removing brush is arranged on one side of the dustproof unit, and a protective baffle is arranged at the upper end of the heat dissipation groove.

Preferably, the dustproof unit comprises a dustproof net and support rods arranged on two sides of the dustproof net, the support rods are movably arranged on two sides of the upper end of the speed regulating box, a driven wheel is arranged on one side of each support rod, and the driven wheel is connected with the driving wheel through a belt.

Preferably, the upper surface of the dust screen is attached to the dust removing brush, and the dust removing brush is magnetically mounted on the upper wall of the speed regulating box.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a pair of office fan has ventilation explosion-proof construction's variable frequency speed adjusting device, when using the speed governing case, can fix speed governing equipment inside the box body, install the box body inside the inside mounting hole of speed governing case again, when speed governing equipment uses, can protect it inside the box body, louvre and the crisscross installation of ventilation groove, make things convenient for speed governing equipment to dispel the heat, if the short circuit takes place for the internal plant, the intensity of a fire can be avoided stretching in setting up of flame retardant coating, if the flame retardant coating is destroyed simultaneously, the powder of putting out a fire of inside setting is released by the activity push pedal, and then the powder of putting out a fire covers in the internal plant upper end, avoid equipment to catch fire, the setting of explosion-proof board can avoid equipment to explode and damage other equipment, it is safer to use.

2. The utility model provides a pair of office fan has ventilation blast resistant construction's variable frequency speed control device, can start the ventilation fan of both sides when using, the convenience is dispelled the heat to the equipment of inside, inside heat is from the radiating groove outdiffusion, the dust screen of upper end setting can effectively block outside dust and get into, use a period of time after, rotatable drive wheel, it rotates from the driving wheel to make it drive through the belt, and then the dust screen of upper end removes, dust removal brush laminating dust screen cleans, clean the dust of upper end, keep the cleanness of dust screen, guarantee normal ventilation effect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the speed-adjusting box of the present invention;

FIG. 3 is a schematic structural view of the protection box of the present invention;

FIG. 4 is a schematic view of the internal structure of the case body of the present invention;

fig. 5 is a schematic view of the structure of the dustproof unit of the present invention.

In the figure: 1. a speed regulating box; 11. a ventilating fan; 12. mounting holes; 13. an air suction hole; 14. a heat sink; 15. a dust-proof unit; 151. a dust screen; 152. a support bar; 153. a driven wheel; 154. a belt; 155. a drive wheel; 16. a dust removal brush; 17. a protective baffle; 2. a protective box; 21. a box body; 211. an explosion-proof plate; 212. a mounting member; 213. a fire barrier layer; 214. a movable push plate; 215. a tension spring; 216. fire extinguishing powder; 22. heat dissipation holes; 23. a ventilation slot; 24. and fixing the feet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In order to solve the technical problem of how to avoid the risk of line short circuit fire explosion, as shown in fig. 1 to 4, the following preferred technical solutions are provided:

the utility model provides a local fan has ventilation blast resistant construction's variable frequency speed adjusting device, includes speed adjusting box 1 and installs at 1 inside protection box 2 of speed adjusting box, and protection box 2 includes box body 21 and sets up the louvre 22 in the box body 21 outside, and box body 21 is the part of the cavity form of an inner wall, and box body 21 inboard is provided with ventilation groove 23, and louvre 22 and ventilation groove 23 set up respectively in both sides, and crisscross installation, and the both sides of box body 21 are provided with fixed foot 24, fixed foot 24 and mounting hole 12 position phase-match.

The box body 21 comprises an explosion-proof plate 211 and mounting pieces 212 mounted on two sides of the explosion-proof plate 211, a fireproof layer 213 is arranged on the outer side of the mounting pieces 212, a movable push plate 214 is arranged on the inner side of the mounting pieces 212, fire extinguishing powder 216 is filled on one side of the movable push plate 214, an expansion spring 215 is arranged on the other side of the movable push plate 214, and the expansion spring 215 is arranged in a contraction shape.

The inner wall of speed adjusting box 1 is provided with ventilating fan 11, and mounting hole 12 has been seted up to speed adjusting box 1's backplate upper end, and speed adjusting box 1's outer wall is provided with the hole 13 that induced drafts, and the hole 13 that induced drafts is linked together with ventilating fan 11.

Specific, when using speed governing box 1, can fix speed governing equipment inside box body 21, install box body 21 inside mounting hole 12 of 1 inside of speed governing box again, when speed governing equipment uses, can be inside box body 21 with its protection, louvre 22 and the crisscross installation of ventilation groove 23, make things convenient for speed governing equipment to dispel the heat, if the short circuit takes place for internal plant, the intensity of a fire can be avoided stretching by setting up of flame retardant coating 213, if the flame retardant coating 213 is destroyed simultaneously, the powder 216 of putting out a fire of inside setting is released by activity push pedal 214, and then the powder 216 of putting out a fire covers in the internal plant upper end, avoid equipment to catch fire, equipment can be avoided bursting apart to damage other equipment to setting up of explosion-proof board 211, it is safer to use.

In order to solve the technical problem of how to accelerate heat dissipation, as shown in fig. 2 and 5, the following preferred technical solutions are provided:

the upper end of the speed regulating box 1 is provided with a heat radiating groove 14, a dustproof unit 15 is arranged inside the heat radiating groove 14, one side of the dustproof unit 15 is provided with a dust removing brush 16, and the upper end of the heat radiating groove 14 is provided with a protective baffle 17.

The dust-proof unit 15 comprises a dust-proof net 151 and support rods 152 arranged on two sides of the dust-proof net 151, the upper surface of the dust-proof net 151 is attached to the dust-removing brush 16, the dust-removing brush 16 is magnetically arranged on the upper wall of the speed-adjusting box 1, the support rods 152 are movably arranged on two sides of the upper end of the speed-adjusting box 1, a driven wheel 153 is arranged on one side of each support rod 152, and the driven wheel 153 is connected with a driving wheel 155 through a belt 154.

Specifically, can start the ventilating fan 11 of both sides when using, conveniently dispel the heat to inside equipment, inside heat is from radiating groove 14 outdiffusion, the dust screen 151 that the upper end set up can effectively block the outside dust and get into, use a period of time after, rotatable drive wheel 155, make it drive through the belt 154 and rotate from driving wheel 153, and then the dust screen 151 of upper end removes, 16 laminating dust screens 151 of dust removal brush clean, clean the dust of upper end, keep the cleanness of dust screen 151, guarantee normal ventilation effect.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a local fan has ventilation explosion-proof structure's variable frequency speed control device, includes speed adjusting box (1) and installs protection box (2) inside speed adjusting box (1), its characterized in that: the protective box (2) comprises a box body (21) and heat dissipation holes (22) formed in the outer side of the box body (21), and ventilation grooves (23) are formed in the inner side of the box body (21);

the fire extinguishing box is characterized in that the box body (21) comprises an explosion-proof plate (211) and mounting pieces (212) mounted on two sides of the explosion-proof plate (211), a movable push plate (214) is arranged on the inner side of each mounting piece (212), fire extinguishing powder (216) is filled on one side of each movable push plate (214), and an expansion spring (215) is arranged on the other side of each movable push plate (214).

2. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 1 is characterized in that: the outer side of the mounting piece (212) is provided with a fireproof layer (213), and the extension spring (215) is arranged in a contraction mode.

3. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 2 is characterized in that: the box body (21) is a part with a hollow inner wall, and the heat dissipation holes (22) and the ventilation grooves (23) are respectively arranged on two sides and are installed in a staggered mode.

4. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 3 is characterized in that: the inner wall of speed adjusting box (1) is provided with ventilating fan (11), and mounting hole (12) have been seted up to the backplate upper end of speed adjusting box (1), and the outer wall of speed adjusting box (1) is provided with induced draft hole (13), and induced draft hole (13) are linked together with ventilating fan (11).

5. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 4, is characterized in that: fixing feet (24) are arranged on two sides of the box body (21), and the fixing feet (24) are matched with the mounting holes (12) in position.

6. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 5 is characterized in that: the upper end of the speed regulating box (1) is provided with a heat radiating groove (14), a dustproof unit (15) is arranged inside the heat radiating groove (14), a dust removing brush (16) is arranged on one side of the dustproof unit (15), and a protective baffle (17) is arranged at the upper end of the heat radiating groove (14).

7. The frequency conversion speed regulation device with the ventilation explosion-proof structure for the local fan according to claim 6, is characterized in that: the dustproof unit (15) comprises a dustproof net (151) and supporting rods (152) arranged on two sides of the dustproof net (151), the supporting rods (152) are movably arranged on two sides of the upper end of the speed regulating box (1), a driven wheel (153) is arranged on one side of each supporting rod (152), and the driven wheel (153) is connected with a driving wheel (155) through a belt (154).

8. The frequency conversion speed regulation device with the ventilation explosion-proof structure of the local fan according to claim 7 is characterized in that: the upper surface of the dust screen (151) is attached to the dust removing brush (16), and the dust removing brush (16) is magnetically mounted on the upper wall of the speed regulating box (1).