CN214092388U

CN214092388U - Frequency conversion draught fan

Info

Publication number: CN214092388U
Application number: CN202022966498.0U
Authority: CN
Inventors: 胡金梅
Original assignee: Qingdao Fengrunda Machinery Co ltd
Current assignee: Qingdao Fengrunda Machinery Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-31
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a frequency conversion draught fan relates to the draught fan field. The variable-frequency draught fan comprises a fan shell, wherein the front surface of the fan shell is fixedly communicated with an air outlet pipe, a protection box is fixedly arranged on the left side surface of the fan shell, a double-end motor is fixedly arranged in the protection box, a bearing is fixedly embedded on the right side surface of the fan shell, one output end of the double-head motor penetrates through the bearing and extends into the fan shell, an impeller is fixedly connected with one output end of the double-head motor, the frequency conversion draught fan is provided with a first dust removal shell and a second dust removal shell through an induced draft opening of the draught fan, the filter screen cotton is arranged in the first dust removal shell and the second dust removal shell, so that the dust removal and filtration effects in the induced air process can be realized, impurities are prevented from entering the induced draft fan in the induced air process, the hasp is set up respectively and the handle is taken on the surface through first dust removal casing and second dust removal casing, can conveniently dismantle and change the filter screen cotton.

Description

Frequency conversion draught fan

Technical Field

The utility model relates to a draught fan technical field specifically is a frequency conversion draught fan.

Background

The induced draft fan is a device which generates negative pressure through the rotation of an impeller and further extracts air from a system or a device, is generally arranged at the tail end of a boiler and is used for extracting hot smoke in a hearth, and in daily life, the induced draft fan is generally divided into the induced draft fan and the air blower according to different use modes of positive pressure and negative pressure, the induced draft fan is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft of boilers and industrial kilns, cooling and ventilation in air conditioning equipment and household electrical equipment, drying and selective feeding of grains, inflation and propulsion of wind tunnel wind sources and cushion ships and the like, because the induced draft fan needs to supply air or exhaust air, a large amount of dust is contained in the air flowing process, the existing induced draft fan has no filtering effect, impurities can easily enter the induced draft fan to cause the damage of the impeller and the induced draft fan vibrates greatly, the shock attenuation effect is relatively poor, for this reason, we propose a frequency conversion draught fan.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a frequency conversion draught fan has solved current draught fan and has not had filterable effect, makes impurity get into the draught fan very easily, leads to the impeller to damage, and the draught fan vibrations are great moreover, the relatively poor problem of shock attenuation effect.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a variable frequency draught fan comprises a fan shell, wherein the front surface of the fan shell is fixedly communicated with an air outlet pipe, a protection box is fixedly arranged on the left side surface of the fan shell, a double-end motor is fixedly arranged in the protection box, a bearing is fixedly embedded on the right side surface of the fan shell, one output end of the double-end motor penetrates through the bearing and extends into the fan shell, and one output end of the double-end motor is fixedly connected with an impeller, the right side surface of the fan shell is provided with an air inducing port, the right side surface of the fan shell is fixedly provided with a first dust removal shell, the air induction port is communicated with the first dust removal shell, a second dust removal shell is arranged at the right side of the first dust removal shell, an induced duct is fixedly communicated with the right side surface of the second dust removal shell, the inside of first dust removal casing and the inside of second dust removal casing all are equipped with the filter screen cotton.

Preferably, the bottom surface fixedly connected with symmetrical shock attenuation pole of guard box, every the bottom of shock attenuation pole all overlaps and is equipped with the damper, every the equal fixedly connected with piston in bottom of shock attenuation pole, every the piston all with damper looks adaptation, every the common fixedly connected with mounting panel in bottom of damper, the last fixed surface of mounting panel is connected with the bumper shock absorber, the top of bumper shock absorber and the bottom fixed connection of fan casing, every the surface of shock attenuation pole all overlaps and is equipped with damping spring.

Preferably, the other output end of the double-end motor is fixedly connected with a fan blade, a ventilation opening is formed in the left side face of the protection box, and a dust screen is fixedly mounted on the left side face of the protection box.

Preferably, the front surface of the first dust removal shell and the back surface of the first dust removal shell are fixedly connected with symmetrical hasps, the front surface of the second dust removal shell and the back surface of the second dust removal shell are fixedly connected with symmetrical carrying handles, and each carrying handle is clamped with the hasps.

Preferably, the upper surface of guard box is fixedly connected with the fixed plate, the upper surface of fixed plate is fixedly connected with rings, the positive fixedly connected with terminal box of guard box, the positive fixedly connected with starting switch of terminal box.

Preferably, the front surface of the air outlet pipe is fixedly connected with a connecting plate, and the front surface of the connecting plate is provided with two groups of symmetrical mounting holes.

Preferably, a sealing gasket is arranged between the first dust removal shell and the second dust removal shell, and the left side surface and the right side surface of the sealing gasket are respectively contacted with one side surface, close to each other, of the first dust removal shell and the second dust removal shell.

(III) advantageous effects

The utility model provides a frequency conversion draught fan. The method has the following beneficial effects:

(1) this frequency conversion draught fan, install first dust removal casing and second dust removal casing through the induced air mouth of draught fan, it is cotton to set up the filter screen in the inside of first dust removal casing and second dust removal casing, can realize the dust removal filter effect of induced air in-process, avoid impurity to get into the draught fan at the induced air in-process, improve the security of using, the surface through first dust removal casing and second dust removal casing sets up the hasp respectively and takes the handle, can conveniently dismantle and change the filter screen cotton.

(2) This frequency conversion draught fan sets up the bumper shock absorber through the bottom of fan casing, utilizes bumper shock absorber cooperation shock attenuation pole and damper cylinder, under the elastic action of damping spring and piston, makes the draught fan carry out the shock attenuation at the during operation, reduces the vibration of draught fan, and the actuating mechanism of draught fan adopts double-end motor to drive, can drive the flabellum and dispel the heat to double-end motor when guaranteeing the draught fan operation.

Drawings

FIG. 1 is a front view of the variable frequency induced draft fan of the present invention;

FIG. 2 is a sectional view of the front view of the protection box of the present invention;

FIG. 3 is a cross-sectional view of a first dust extraction housing of the present invention;

fig. 4 is a sectional view of the front view of the shock-absorbing cylinder of the present invention.

In the figure: 1. a fan housing; 2. a shock absorber; 3. a damping spring; 4. mounting a plate; 5. a damper cylinder; 6. a shock-absorbing lever; 7. a dust screen; 8. a protection box; 9. a junction box; 10. a fixing plate; 11. a hoisting ring; 12. an air outlet pipe; 13. a connecting plate; 14. a first dust removal housing; 15. a gasket; 16. a second dust removal housing; 17. an induced draft pipe; 18. carrying out handle lapping; 19. a hasp; 20. a double-headed motor; 21. a fan blade; 22. a vent; 23. a bearing; 24. an impeller; 25. an air inducing port; 26. filtering the net cotton; 27. a piston.

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 work belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: a variable-frequency draught fan comprises a fan shell 1, wherein the front surface of the fan shell 1 is fixedly communicated with an air outlet pipe 12, the left side surface of the fan shell 1 is fixedly provided with a protection box 8, the inside of the protection box 8 is fixedly provided with a double-end motor 20, the right side surface of the fan shell 1 is fixedly embedded with a bearing 23, one output end of the double-end motor 20 penetrates through the bearing 23 and extends to the inside of the fan shell 1, and an output end of the double-end motor 20 is fixedly connected with an impeller 24, an air induction port 25 is formed in the right side surface of the fan shell 1, a first dust removal shell 14 is fixedly installed on the right side surface of the fan shell 1, the air induction port 25 is communicated with the first dust removal shell 14, a second dust removal shell 16 is arranged on the right side of the first dust removal shell 14, an air induction pipe 17 is fixedly communicated with the right side surface of the second dust removal shell 16, and filter screen cotton 26 is sleeved in the first dust removal shell 14 and the second dust removal shell 16.

Symmetrical shock-absorbing rod 6 of bottom surface fixedly connected with of guard box 8, the bottom of every shock-absorbing rod 6 all overlaps and is equipped with damper 5, the equal fixedly connected with piston 27 in bottom of every shock-absorbing rod 6, every piston 27 all with damper 5 looks adaptation, the common fixedly connected with mounting panel 4 in bottom of every damper 5, the last fixed surface of mounting panel 4 is connected with bumper shock absorber 2, the top of bumper shock absorber 2 and the bottom fixed connection of fan casing 1, the surface of every shock-absorbing rod 6 all overlaps and is equipped with damping spring 3, can play and carry out absorbing effect to the draught fan, guarantee the stability in the use, another output fixedly connected with flabellum 21 of double-end motor 20, vent 22 has been seted up to the left surface of guard box 8, the left surface fixed mounting of guard box 8 has dust screen 7, can play good radiating effect.

Symmetrical hasps 19 are fixedly connected to the front of the first dust removing shell 14 and the back of the first dust removing shell 14, symmetrical handles 18 are fixedly connected to the front of the second dust removing shell 16 and the back of the second dust removing shell 16, each handle 18 is clamped with the corresponding hasp 19, filter screen cotton 26 can be replaced conveniently, a fixing plate 10 is fixedly connected to the upper surface of the protection box 8, a hanging ring 11 is fixedly connected to the upper surface of the fixing plate 10, a junction box 9 is fixedly connected to the front of the protection box 8, a starting switch is fixedly connected to the front of the junction box 9 and can be connected with an external power source conveniently, a connecting plate 13 is fixedly connected to the front of the air outlet pipe 12, two groups of symmetrical mounting holes are formed in the front of the connecting plate 13 and are connected with equipment conveniently, a sealing gasket 15 is arranged between the first dust removing shell 14 and the second dust removing shell 16, the left side surface and the right side surface of the sealing gasket 15 are respectively contacted with one side surface of the first dust removing shell 14, which is close to the second dust removing shell 16, the sealing effect is improved.

During the use, at first install the draught fan in the user position through mounting panel 4, will go out tuber pipe 12 and communicate with equipment, the switch-on draught fan power, the draught fan is at the during operation, utilize damping spring 3 and piston 27 cooperation shock-absorbing rod 6 and damper cylinder 5, can play and carry out the shock attenuation buffering to the double-end motor 20 of guard box 8 inside, bumper shock absorber 2 can cooperate fan casing 1 to carry out the shock attenuation simultaneously, the outside air enters into second dust removal casing 16 and first dust removal casing 14 through induced duct 17, inside at second dust removal casing 16 and first dust removal casing 14, utilize the filter screen cotton 26 to filter the air, guarantee to get into the inside air cleanness of draught fan.

It is noted that, herein, relational terms such as first and second, and the like may be 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 frequency conversion draught fan, includes fan casing (1), its characterized in that: the front of the fan shell (1) is fixedly communicated with an air outlet pipe (12), the left side face of the fan shell (1) is fixedly provided with a protection box (8), the inside of the protection box (8) is fixedly provided with a double-end motor (20), the right side face of the fan shell (1) is fixedly embedded with a bearing (23), one output end of the double-end motor (20) penetrates through the bearing (23) and extends to the inside of the fan shell (1), one output end of the double-end motor (20) is fixedly connected with an impeller (24), the right side face of the fan shell (1) is provided with an air inlet (25), the right side face of the fan shell (1) is fixedly provided with a first dust removal shell (14), the air inlet (25) is communicated with the first dust removal shell (14), the right side of the first dust removal shell (14) is provided with a second dust removal shell (16), an air guiding pipe (17) is fixedly communicated with the right side surface of the second dust removing shell (16), and filter screen cotton (26) is sleeved in the first dust removing shell (14) and the second dust removing shell (16).

2. The frequency conversion induced draft fan of claim 1, wherein: the symmetrical shock-absorbing rod (6) of bottom surface fixedly connected with of guard box (8), every the bottom of shock-absorbing rod (6) all overlaps and is equipped with damper (5), every the equal fixedly connected with piston (27) in bottom of shock-absorbing rod (6), every piston (27) all with damper (5) looks adaptation, every the common fixedly connected with mounting panel (4) in bottom of damper (5), the last fixed surface of mounting panel (4) is connected with bumper shock absorber (2), the top of bumper shock absorber (2) and the bottom fixed connection of fan casing (1), every the surface of shock-absorbing rod (6) all overlaps and is equipped with damping spring (3).

3. The frequency conversion induced draft fan of claim 1, wherein: another output end fixedly connected with flabellum (21) of double-end motor (20), vent (22) have been seted up to the left surface of guard box (8), the left surface fixed mounting of guard box (8) has dust screen (7).

4. The frequency conversion induced draft fan of claim 1, wherein: the front surface of the first dust removal shell (14) and the back surface of the first dust removal shell (14) are fixedly connected with symmetrical hasps (19), the front surface of the second dust removal shell (16) and the back surface of the second dust removal shell (16) are fixedly connected with symmetrical handles (18), and each handle (18) is clamped with the hasps (19).

5. The frequency conversion induced draft fan of claim 1, wherein: the upper surface fixed connection of guard box (8) has fixed plate (10), the upper surface fixed connection of fixed plate (10) has rings (11), the positive fixedly connected with terminal box (9) of guard box (8), the positive fixedly connected with starting switch of terminal box (9).

6. The frequency conversion induced draft fan of claim 1, wherein: the front surface of the air outlet pipe (12) is fixedly connected with a connecting plate (13), and two groups of symmetrical mounting holes are formed in the front surface of the connecting plate (13).

7. The frequency conversion induced draft fan of claim 1, wherein: a sealing gasket (15) is arranged between the first dust removing shell (14) and the second dust removing shell (16), and the left side surface and the right side surface of the sealing gasket (15) are respectively contacted with one side surface of the first dust removing shell (14) and the second dust removing shell (16) which are close to each other.