CN220319866U - Induced draft fan for gas boiler - Google Patents

Abstract

The utility model discloses an induced draft fan for a gas boiler, which relates to the technical field of induced draft fans and comprises an induced draft pipe, wherein a character frame is arranged in the induced draft pipe, the middle part of the character frame is connected with a fan blade shaft through a bearing, the upper end of the induced draft pipe is provided with a first motor, the output end of the first motor penetrates through the induced draft pipe and is provided with a first driving shaft, bevel gears which are mutually matched are arranged on the first driving shaft and the fan blade shaft, the left part of the outer side wall of the induced draft pipe is provided with a flanging disc, the center of the flanging disc is positioned at the lower side of the induced draft pipe, the lower end of the induced draft pipe is provided with a second motor, and the output end of the second motor is provided with a second driving shaft, and the second driving shaft penetrates through the center of the flanging disc.

Description

Induced draft fan for gas boiler

Technical Field

The utility model relates to the technical field of induced fans, in particular to an induced fan for a gas boiler.

Background

During operation of the gas boiler, induced air is required to be introduced into the air by using the induced draft fan to assist combustion, dust in a boiler room is relatively more, dust particles in the air can be introduced into the boiler along with the air, the combustion affecting the boiler leads to blockage, a filter screen is arranged on an air inlet of the existing part of the boiler induced draft fan to remove the dust, but the filter screen is required to be cleaned regularly, the air inlet of the induced draft fan is influenced by the blockage of the filter screen, the filter screen is required to be detached during cleaning, and the cleaning process is inconvenient.

Disclosure of Invention

The utility model aims to provide an induced draft fan for a gas boiler, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a draught fan for gas boiler, includes the induced duct, the inside of induced duct is equipped with a word, the middle part of a word is connected with the flabellum axle through the bearing, the upper end of induced duct is equipped with first motor, the output of first motor runs through the induced duct and is equipped with first drive shaft, first drive shaft with be equipped with the bevel gear of mutual adaptation on the flabellum axle, the lateral wall left part of induced duct is equipped with the turn-ups disc, the center of turn-ups disc is located the downside of induced duct, the lower extreme of induced duct is equipped with the second motor, the output of second motor is equipped with the second drive shaft, the second drive shaft runs through the center of turn-ups disc, the left end of second drive shaft is equipped with the cross, the cross outside is equipped with the ring frame, the ring frame with be equipped with the filter screen between the right-hand member of cross, the ring frame with connect through the bearing between the turn-ups disc, the left end of turn-ups disc just be equipped with the brush strip in the downside of second drive shaft.

Preferably, the left end of the flanging disc is provided with an arc cover, the lower end of the arc cover is provided with a dust collecting pipe, the lower end of the dust collecting pipe is in threaded connection with a sealing cover, the upper end of the sealing cover is provided with a supporting frame, and a dust collecting net is arranged in the supporting frame.

Preferably, the right end of the dust collecting pipe is provided with a dust collecting pipe, and a dust collecting fan is arranged in the dust collecting pipe.

Compared with the prior art, the utility model has the beneficial effects that: the dust in the air is intercepted by the filter screen with the diameter being larger than twice the inner diameter of the induced air pipe, the filter screen can rotate by taking the center of the filter screen as an axis, when the filter screen rotates to pass through the hairbrush strip, the hairbrush strip can clean and push out the residual dust of the filter screen leftwards, the influence of the blockage of the filter screen on air inlet is avoided, the filter screen is cleaned by itself in the rotating process, the cleaning work of periodically dismantling the filter screen is avoided, and the induced air machine can work continuously.

Drawings

Fig. 1 is a schematic view of a front view in cross section.

Fig. 2 is a schematic left-view structure of the present utility model with the filter screen removed.

Fig. 3 is a schematic structural view of the cover and the support frame of the present utility model.

In the figure: 1. an air guiding pipe; 2. a character frame; 3. a fan blade shaft; 4. a first motor; 5. a first drive shaft; 6. a bevel gear; 7. a flanging disc; 8. a second motor; 9. a second drive shaft; 10. a cross; 11. a ring frame; 12. a filter screen; 13. a brush strip; 14. a circular arc cover; 15. a dust collecting pipe; 16. a cover; 17. a support frame; 18. a dust collecting net; 19. a dust collection pipe; 20. dust collection fan.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the induced draft fan for the gas boiler comprises an induced draft tube 1, the induced draft tube 1 is communicated left and right, left air is introduced into the right end and communicated with the gas boiler to guide air into the gas boiler for auxiliary combustion, a character frame 2 is arranged in the induced draft tube 1, a fan blade shaft 3 is connected to the middle of the character frame 2 through a bearing, a first motor 4 is arranged at the upper end of the induced draft tube 1, the output end of the first motor 4 penetrates through the induced draft tube 1 and is provided with a first driving shaft 5, the first driving shaft 5 and the fan blade shaft 3 are provided with bevel gears 6 which are mutually matched, the upper end and the lower end of the character frame 2 are fixed on the inner side wall of the induced draft tube 1, a sufficient gap is reserved between the character frame 2 and the induced draft tube 1, the center of the character frame 2 is provided with a round hole for fixing a bearing outer ring, the fan blade shaft 3 is fixed on the bearing inner ring to enable the fan blade shaft 3 to rotate on the character frame 2, the rotation of the fan blade shaft 3 can drive air to transmit rightwards, a platform for mounting and fixing the fan blade shaft 3 on the first motor 4 is formed at the upper end of the air guiding pipe 1, the first motor 4 is fixed on the air guiding pipe 1 and seals, the output end of the first motor 4 penetrates through the side wall of the air guiding pipe 1, the first driving shaft 5 is fixed on the output end of the first motor 4, two bevel gears 6 are respectively fixed on the first driving shaft 5 and the fan blade shaft 3 and meshed with each other, the fan blade shaft 3 can be driven to rotate unidirectionally by the first motor 4 through the transmission of the shaft and the bevel gears 6, the air inlet quantity can be controlled in a rotating speed control manner, the motor in the device is externally supplied and controlled, a flanging disc 7 is arranged at the left part of the outer side wall of the air guiding pipe 1, the center of the flanging disc 7 is positioned at the lower side of the air guiding pipe 1, the air guiding pipe 1 penetrates through the upper part of the flanging disc 7 and is fixedly connected into a whole, the edge of the flanging disc 7 turns over to the left to form a cylinder with a certain length, the lower end of the induced air pipe 1 is provided with a second motor 8, the output end of the second motor 8 is provided with a second driving shaft 9, the second driving shaft 9 penetrates through the center of the flanging disc 7, the lower end of the induced air pipe 1 is fixed by the second motor 8, the second driving shaft 9 is fixed on the output end of the second motor 8, a round hole for the second driving shaft 9 to penetrate through is formed in the center position of the flanging disc 7, the second motor 8 can drive the second driving shaft 9 to rotate unidirectionally, the left end of the second driving shaft 9 is provided with a cross 10, the outer side of the cross 10 is provided with a round-link 11, a filter screen 12 is arranged between the cross 11 and the right end of the cross 10, the round-link 11 is connected with the flanging disc 7 through a bearing, the left end of the round-link 7 is provided with a brush strip 13, the cross 10 is fixed on the left end of the cross 10, the round-link 11 is fixed on the outer side of the cross 10, the cross 10 is clamped with the filter screen 12 through the cross 10, dust is held by the round-link 12, the round-link 11 is clamped with the filter screen 12 through the cross 10, the round-link 12 is clamped on the filter screen 12, the filter screen is held by the filter screen 12, the round-link 12 is held by the round-link 12, and the filter screen is held by the filter screen 12 through the round-link 12, and the round-link 12 is held by the filter screen 12, and the filter screen 12 is held by the filter-link 12 and the filter screen 12 and is held by the filter-link 13, and the filter-link 12 and is held by the filter 13, avoiding the blocking of the filter screen 12 from affecting the air intake.

Specifically, the left end of turn-ups disc 7 is equipped with circular arc cover 14, the lower extreme of circular arc cover 14 is equipped with dust collecting tube 15, the lower extreme threaded connection of dust collecting tube 15 has closing cap 16, the upper end of closing cap 16 is equipped with support frame 17, be equipped with dust collection net 18 in the support frame 17, circular arc cover 14 is fixed at the turn-ups disc 7 left end, circular arc cover 14 is equivalent to a whole circular cover and cuts off most, the dust that is pushed out by brush 13 left can be located circular arc cover 14, dust collecting tube 15 link up from top to bottom and fix at circular arc cover 14 lower extreme and with the inside intercommunication of circular arc cover 14, closing cap 16 threaded connection is in dust collecting tube 15 lower port, the support is consolidated and is fixed at closing cap 16 upper end, dust collection net 18 is fixed on support frame 17, the dust in the circular arc cover 14 can fall into dust collection net 18 in being collected.

Specifically, the right end of the dust collecting pipe 15 is provided with a dust collecting pipe 19, the dust collecting pipe 19 is internally provided with a dust collecting fan 20, the dust collecting pipe 19 is fixed on the dust collecting pipe 15 and is communicated with the inside of the dust collecting pipe 15, the dust collecting fan 20 is fixed in the dust collecting pipe 19, air is pumped by the dust collecting fan 20, dust in the arc cover 14 is carried into the dust collecting net 18 by the air, the air passes through the dust collecting net 18 and is pumped out by the dust collecting fan 20, and a jet of air flows downwards into the dust collecting pipe 15 from the upper end of the arc cover 14, so that the dust cleaned by the hairbrush strip 13 is prevented from being adsorbed by the rightward air flow of the induced air pipe 1.

Working principle: the first motor 4 drives the first driving shaft 5 to rotate, the fan blade shaft 3 rotates on the first bracket 2 through the transmission of the bevel gear 6, air in the induced duct 1 flows rightwards, the right end of the induced duct 1 is communicated with the gas boiler to add air into the boiler to assist combustion, the air entering into the induced duct 1 can be filtered by the filter screen 12 first, dust in the air can be intercepted at the left end of the filter screen 12, the second motor 8 can drive the second driving shaft 9, the cross 10, the ring frame 11 and the filter screen 12 to rotate, when the filter screen 12 rotates to pass through the brush bar 13, the dust retained on the filter screen 12 can be pushed leftwards, so that the filter screen 12 is prevented from being blocked by dust, air is prevented from affecting air inlet, a stream of air can flow downwards into the dust collecting pipe 15 from the upper end of the circular arc cover 14, the dust pushed up by the brush bar 13 can be collected along with the air entering into the dust collecting net 18, the cover 16 can be removed, the support frame 17 and the dust collecting net 18 can be removed, and the dust therein can be cleaned.

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

Claims (3)

1. The utility model provides a draught fan for gas boiler, includes induced duct (1), its characterized in that: the inside of induced air pipe (1) is equipped with a frame (2), the middle part of a frame (2) is connected with flabellum axle (3) through the bearing, the upper end of induced air pipe (1) is equipped with first motor (4), the output of first motor (4) runs through induced air pipe (1) and is equipped with first drive shaft (5), first drive shaft (5) with be equipped with bevel gear (6) of mutual adaptation on flabellum axle (3), the lateral wall left part of induced air pipe (1) is equipped with turn-ups disc (7), the center of turn-ups disc (7) is located the downside of induced air pipe (1), the lower extreme of induced air pipe (1) is equipped with second motor (8), the output of second motor (8) is equipped with second drive shaft (9), second drive shaft (9) run through the center of turn-ups (7), the left end of second drive shaft (9) is equipped with frame (10), frame (10) are equipped with ring (11) and are equipped with ring (11) between the frame (11) and the ring (11) through the frame between the ring (11) and the ring (11) of being connected, the left end of the flanging disc (7) is provided with hairbrush strips (13) at the lower side of the second driving shaft (9).

2. The induced draft fan for a gas boiler according to claim 1, wherein: the novel dust collector is characterized in that the left end of the flanging disc (7) is provided with an arc cover (14), the lower end of the arc cover (14) is provided with a dust collecting pipe (15), the lower end of the dust collecting pipe (15) is connected with a sealing cover (16) in a threaded manner, the upper end of the sealing cover (16) is provided with a supporting frame (17), and a dust collecting net (18) is arranged in the supporting frame (17).

3. The induced draft fan for a gas boiler according to claim 2, wherein: the right end of the dust collecting pipe (15) is provided with a dust collecting pipe (19), and a dust collecting fan (20) is arranged in the dust collecting pipe (19).