CN211009297U

CN211009297U - Draught fan for boiler

Info

Publication number: CN211009297U
Application number: CN201921885760.XU
Authority: CN
Inventors: 钟德祥
Original assignee: Yunnan Shuifu Yuntianhua Co ltd
Current assignee: Yunnan Shuifu Yuntianhua Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-14
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a draught fan for boiler, including the base, the top of base is provided with evenly distributed's damping device, and damping device's top is provided with the mounting panel, and the left side at mounting panel top is provided with draws the fan case, and the top of mounting panel and the right side that is located draws the fan case are provided with the mount table, and the top of drawing the fan case is provided with the top cap, and the front intercommunication that draws the fan case has the exhaust pipe. The utility model discloses a cooperation between base and the damping device realizes the shock attenuation to the mounting panel, increase stability, draw the fan case to produce the negative pressure through setting up, thereby it discharges to introduce the inside of drawing the fan case with waste gas through the exhaust pipe, be used for installing the motor through setting up the mount table, reduce the vibrations of motor during operation simultaneously, be used for increasing the leakproofness of drawing the fan case through setting up the top cap, the convenience of disassembling through the top cap simultaneously is opened the draught fan case, clear up inside dust, the inconvenient problem of disassembling of current draught fan has been solved simultaneously.

Description

Draught fan for boiler

Technical Field

The utility model relates to a draught fan technical field specifically is a draught fan for boiler.

Background

The boiler induced draft fan is a machine which can improve gas pressure and discharge gas by means of mechanical energy input by a motor, the working principle of the driven fluid mechanical boiler induced draft fan is basically the same as that of a turbine compressor, only because the gas flow rate is low and the pressure change is not large, the change of the specific volume of the gas is generally not required to be considered, namely, the gas is treated as incompressible fluid, the large-scale power station boiler induced draft fan is generally an axial flow fan with adjustable static blades or adjustable movable blades, the smoke in the boiler is led into a desulfurization island or a chimney along the axial direction by utilizing the lifting force generated by the rotation of an impeller, because the smoke contains a large amount of impurities, the impurities can be attached to the blades and the inner wall of the induced draft fan in the induced draft process, the existing induced draft fan is not convenient to disassemble, the internal dust is inconvenient to clean, so that.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a draught fan for boiler possesses the advantage of conveniently disassembling and clearing up, has solved the inconvenient problem of disassembling of current draught fan.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an draught fan for boiler, includes the base, the top of base is provided with evenly distributed's damping device, damping device's top is provided with the mounting panel, the left side at mounting panel top is provided with draws the fan case, the top of mounting panel and the right side that is located draw the fan case are provided with the mount table, the top of drawing the fan case is provided with the top cap, the front intercommunication of drawing the fan case has the exhaust pipe, the left side intercommunication of drawing the fan case has the hose, be provided with fixing device between fan case and the top cap.

Preferably, the top of mount table fixed mounting has the motor, the output of motor runs through the right side of drawing fan case and extends to the inside of drawing fan case, the left side fixed mounting of motor has the dust cover, the left side of dust cover and the right side fixed connection of drawing fan case.

Preferably, damping device includes shell, connecting rod, gag lever post, spring, leads to groove and mounting groove, the top fixed mounting of base has evenly distributed's shell, the mounting groove has been seted up to the inside of shell, the inside of shell and the both sides that are located the mounting groove have all been seted up and have been led to the groove, the inside fixed mounting of mounting groove has the spring, the inside sliding connection of mounting groove has the connecting rod, the equal fixed mounting in both sides of connecting rod has the gag lever post, the gag lever post extends to the both sides of shell respectively through the groove, the top of spring and the bottom contact of connecting rod, the top of connecting rod and the bottom fixed connection of mounting panel.

Preferably, the fixing device comprises a first connecting block, a second connecting block, a third connecting block, a first groove, a clamping block, a nut and a screw rod, the second connecting block is fixedly mounted at the top of the draught fan box, the first connecting block is connected to the bottom of the top cover, the third connecting block is fixedly mounted at the bottom of the second connecting block, the screw rod is connected to the third connecting block in a rotating mode, the first groove is formed in the top of the first connecting block, the clamping block is arranged inside the first groove, the screw rod penetrates through the first connecting block, the second connecting block and the clamping block respectively and extends to the top of the clamping block, and the nut is connected to the surface of the screw rod in a threaded mode.

Preferably, the top of the air guiding box is fixedly provided with a sealing block, the top of the air guiding box is fixedly provided with a sealing gasket on one side of the sealing block, the bottom of the top cover is provided with a second groove, and the sealing block and the sealing gasket penetrate through the inside of the second groove.

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

1. the utility model discloses a cooperation between base and the damping device realizes the shock attenuation to the mounting panel, increase stability, produce the negative pressure through setting up draught fan case, thereby introduce the inside of draught fan case with waste gas and discharge through the exhaust pipe, be used for installing the motor through setting up the mount table, reduce the vibrations of motor during operation simultaneously, be used for increasing draught fan case's leakproofness through setting up the top cap, the convenience of disassembling through the top cap simultaneously is opened the draught fan case, clear up inside dust, through the exhaust pipe discharge simultaneously in the inside of hose between and the exhaust pipe with the flue gas pump to draught fan case, the inconvenient problem of disassembling of current draught fan has been solved simultaneously.

2. The utility model discloses a set up the output shaft that the dust cover is used for protecting the motor and can not fall the ash, through the shell, the vibrations that cooperation between connecting rod and the spring produced the motor during operation are eliminated, be used for spacing to the connecting rod through setting up the gag lever post, ensure holistic stability, realized making the screw rod rotate to the spacing while of screw rod through setting up the third connecting block, realize fixing between first connecting block and the second connecting block through the cooperation between fixture block nut and the screw rod, through the second recess, the cooperation between sealed piece and the sealed pad increases draws the leakproofness between fan case and the top cap.

Drawings

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

FIG. 2 is a schematic view of the cross-sectional structure of the damping device of the present invention;

FIG. 3 is a schematic view of the partial cross-sectional structure of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3 according to the present invention.

In the figure: 1. a base; 2. a damping device; 201. a housing; 202. a connecting rod; 203. a limiting rod; 204. a spring; 205. a through groove; 206. mounting grooves; 3. mounting a plate; 4. a draught fan box; 5. a hose; 6. a fixing device; 601. a first connection block; 602. a second connecting block; 603. a third connecting block; 604. a first groove; 605. a clamping block; 606. a nut; 607. a screw; 7. an exhaust duct; 8. a dust cover; 9. a motor; 10. an installation table; 11. a top cover; 12. a second groove; 13. a sealing block; 14. and a gasket.

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.

In the description herein, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the patent. In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, an induced draft fan for a boiler comprises a base 1, wherein damping devices 2 are uniformly distributed on the top of the base 1, a mounting plate 3 is arranged on the top of the damping device 2, the damping of the mounting plate 3 is realized through the cooperation between the base 1 and the damping device 2, the stability is improved, an induced draft fan box 4 is arranged on the left side of the top of the mounting plate 3, negative pressure is generated through the induced draft fan box 4, so that waste gas is introduced into the induced draft fan box 4 and is exhausted through an exhaust pipe 7, a mounting table 10 is arranged on the top of the mounting plate 3 and positioned on the right side of the induced draft fan box 4, a motor 9 is mounted through the mounting table 10, vibration of the motor 9 during operation is reduced, a top cover 11 is arranged on the top of the induced draft fan box 4, the sealing performance of the induced draft fan box 4 is improved through the top cover 11, and the, the dust-proof device comprises a shell 201, a connecting rod 202, a limiting rod 203, a spring 204, a through groove 205 and a mounting groove 206, wherein the shell 201 is uniformly distributed is fixedly mounted at the top of a base 1, the fixing device 6 comprises a first connecting block 601, a second connecting block 602, a third connecting block 603, a first groove 604, a clamping block 605, a nut 606 and a screw induced draft fan 607, wherein a through groove 205 is formed in the shell 201, through grooves 205 are formed in the two sides of the mounting groove 206, a spring 204 is fixedly arranged in the mounting groove 206, a connecting rod 202 is slidably connected in the mounting groove 206, limiting rods 203 are fixedly arranged on the two sides of the connecting rod 202, the limiting rods 203 extend to the two sides of the shell 201 through the grooves 205, the top of the spring 204 is in contact with the bottom of the connecting rod 202, the top of the connecting rod 202 is fixedly connected with the bottom of the mounting plate 3, vibration generated during the operation of the motor 9 is eliminated through the matching between the shell 201, the connecting rod 202 and the spring 204, the connecting rod 202 is limited through the limiting rods 203, the stability of the whole is ensured, the fixing device 6 comprises the first connecting block 601, the bottom of the top cover 11 is connected with a first connecting block 601, the bottom of the second connecting block 602 is fixedly provided with a third connecting block 603, the inside of the third connecting block 603 is rotatably connected with a screw 607, the top of the first connecting block 601 is provided with a first groove 604, the inside of the first groove 604 is provided with a fixture block 605, the screw 607 respectively penetrates through the first connecting block 601, the second connecting block 602 and the fixture block 605 and extends to the top of the fixture block 605, the surface of the screw 607 is in threaded connection with a nut 606, the screw 607 is rotated while the screw 607 is limited by the third connecting block 603, the first connecting block 601 and the second connecting block 602 are fixed by matching between the nut 606 and the screw 607, the top of the induced draft fan box 4 is fixedly provided with a sealing block 13, the top of the induced draft fan box 4 and one side of the sealing block 13 are fixedly provided with a sealing gasket 14, the bottom of the top cover 11 is provided with a second groove, the sealing block 13 and the sealing gasket 14 penetrate into the second groove 12, and the sealing performance between the induced draft fan box 4 and the top cover 11 is improved through the matching among the second groove 12, the sealing block 13 and the sealing gasket 14.

When the device is used, after the device works for a period of time, the nut 606 is rotated to separate the first connecting block 601 from the second connecting block 602, the clamping block 605 at the top of the first connecting block 601 is lifted and rotates together with the screw 607, so that the screw 607, the nut 606 and the clamping block 605 rotate to the bottom of the second connecting block 602 by taking the third connecting block 603 as a base point, the top cover 11 is removed, dust in the induced draft fan box 4 is removed, and the device can be installed after the removal is completed.

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 an induced draft fan for boiler, includes base (1), its characterized in that: the top of base (1) is provided with evenly distributed's damping device (2), the top of damping device (2) is provided with mounting panel (3), the left side at mounting panel (3) top is provided with draws fan case (4), the top of mounting panel (3) and the right side that is located to draw fan case (4) are provided with mount table (10), the top of drawing fan case (4) is provided with top cap (11), the front intercommunication of drawing fan case (4) has exhaust pipe (7), the left side intercommunication of drawing fan case (4) has hose (5), it is provided with fixing device (6) to draw between fan case (4) and top cap (11).

2. The induced draft fan for the boiler according to claim 1, wherein: the top fixed mounting of mount table (10) has motor (9), the output of motor (9) runs through the right side of drawing fan case (4) and extends to the inside of drawing fan case (4), the left side fixed mounting of motor (9) has dust cover (8), the left side of dust cover (8) and the right side fixed connection who draws fan case (4).

3. The induced draft fan for the boiler according to claim 1, wherein: the damping device (2) comprises a shell (201), a connecting rod (202), a limiting rod (203), a spring (204), a through groove (205) and a mounting groove (206), the top of the base (1) is fixedly provided with uniformly distributed shells (201), the shells (201) are internally provided with mounting grooves (206), through grooves (205) are arranged in the shell (201) and on two sides of the mounting groove (206), a spring (204) is fixedly arranged inside the mounting groove (206), a connecting rod (202) is connected inside the mounting groove (206) in a sliding manner, both sides of the connecting rod (202) are fixedly provided with limiting rods (203), the limiting rods (203) respectively extend to both sides of the shell (201) through the through grooves (205), the top of the spring (204) is in contact with the bottom of the connecting rod (202), and the top of the connecting rod (202) is fixedly connected with the bottom of the mounting plate (3).

4. The induced draft fan for the boiler according to claim 1, wherein: the fixing device (6) comprises a first connecting block (601), a second connecting block (602), a third connecting block (603), a first groove (604), a clamping block (605), a nut (606) and a screw (607), the top of the draught fan box (4) is fixedly provided with a second connecting block (602), the bottom of the top cover (11) is connected with a first connecting block (601), the bottom of the second connecting block (602) is fixedly provided with a third connecting block (603), a screw rod (607) is rotatably connected inside the third connecting block (603), a first groove (604) is formed at the top of the first connecting block (601), a clamping block (605) is arranged in the first groove (604), the screw (607) penetrates through the first connecting block (601), the second connecting block (602) and the clamping block (605) respectively and extends to the top of the clamping block (605), and a nut (606) is connected to the surface of the screw (607) in a threaded mode.

5. The induced draft fan for the boiler according to claim 1, wherein: draw the top fixed mounting of fan case (4) to have sealed piece (13), draw the top of fan case (4) and be located one side fixed mounting of sealed piece (13) to have sealed pad (14), second recess (12) have been seted up to the bottom of top cap (11), sealed piece (13) and sealed pad (14) run through to the inside of second recess (12).