CN218787208U - Boiler induced draft fan - Google Patents

Abstract

The utility model discloses a boiler draught fan relates to draught fan technical field, including the draught fan body that is used for the boiler induced air, the below fixed mounting of draught fan body has and is used for absorbing vibration damping mount, the upper end fixedly connected with of draught fan body is used for filtering the intake stack of dust, the right side fixed mounting of draught fan body has and is used for filtering the dustAn air outlet pipe for air outlet. This boiler draught fan, through the cooperation work of first filter screen, filter pulp and second filter screen, filters the air that gets into draught fan body inside, avoids particulate matter among the outside air to get into draught fan body inside, avoids the draught fan body to blow into the boiler with the wind that has the granule simultaneously, causes the boiler damage _， Set up comparatively convenient taking out first filter screen, filter pulp and second filter screen clean the change through the installing frame joint in the inside of air inlet frame and handle, simple structure, convenient to use, respond well to improve equipment's life's effect has been reached.

Description

A boiler induced draft fan

technical field

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

Background technique

The boiler induced draft fan is a machine that relies on the mechanical energy input by the motor to increase the gas pressure and discharge the gas. It is a driven fluid machine.

Publication No. CN211901020U discloses a boiler induced draft fan, comprising a casing, an impeller and a motor, the impeller is arranged in the casing, the motor is arranged at the rear end of the casing, the impeller consists of several blades and several blades It is composed of a fixed plate for fixed assembly. Both ends of the blade have snap-fit assemblies opposite to each other. Through the snap-fit assembly, the blade and the fixed plate are snapped together. A cooling device is provided between the motor and the casing to dissipate the heat inside and outside the casing. , the casing is composed of a spliced main volute and an auxiliary volute, the main volute and the auxiliary volute are positioned and clamped by a clamping mechanism, which has the advantages of convenient maintenance, simple structure, and good heat dissipation effect, but the device has the following disadvantages , There is a lot of dust in the boiler room, and the induced draft fan of the boiler blows the wind with dust particles into the boiler. On the one hand, the impurities in the boiler increase, the fuel combustion is incomplete, and the boiler is blocked. The accumulation of dust and impurities will cause damage to the induced draft fan.

For this reason, the utility model provides a boiler induced draft fan to solve the above-mentioned problems.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a boiler induced draft fan, which has the function of filtering dust, and solves the problem that the above induced draft fan blows the wind with dust particles into the boiler, on the one hand, it increases the impurities in the boiler, The incomplete combustion of the fuel causes the boiler to be blocked. At the same time, the induced draft fan is used for a long time, and dust and impurities are easy to accumulate inside, resulting in damage to the induced draft fan.

In order to achieve the above purpose, the utility model is realized through the following technical proposals: a boiler induced draft fan, including a draft fan body used for boiler induced draft, a shock absorbing base for shock absorption is fixedly installed under the induced draft fan body, The upper end of the induced draft fan body is fixedly connected with an air inlet pipe for filtering dust, and the right side of the induced draft fan body is fixedly installed with an air outlet pipe for air outlet. The induced draft fan body includes a shell, and the lower end of the shell It is fixedly installed on the upper surface of the shock-absorbing base, and the front and rear surfaces of the inner wall of the housing are movably installed with a rotating shaft for rotation. One end of the rotating shaft extends to the outside of the housing and is movably connected with the outer wall of the housing. Blades are fixedly installed on the side, and one end of the rotating shaft is fixedly connected with a first gear, and the surface of the first gear is meshed with a chain for meshing transmission, and one end of the chain is meshed with a second gear, and the second gear is meshed with the second gear. The surface of the gear is fixedly connected with a motor for providing power, and the lower surface of the motor is fixedly installed on the upper surface of the shock-absorbing base. Extract and replace the installation frame of the filter screen, the upper end of the inner wall of the installation frame is clamped with the first filter screen for filtering dust, the lower end of the inner wall of the installation frame is clamped with the second filter screen, the first filter screen and the second filter screen are clamped Filter cotton for enhancing the filtering effect is arranged between the two filter screens.

Preferably, a sound-absorbing layer is fixedly installed inside the inner wall of the housing.

Preferably, a handle is fixedly installed on the right surface of the installation frame.

Preferably, a connecting pipe is fixedly connected to the lower surface of the air intake frame, and one end of the connecting pipe is fixedly connected inside the housing.

Preferably, the shock-absorbing base includes a mounting seat, a base is provided under the mounting seat, a shock-absorbing airbag is fixedly installed on the lower wall of the mounting seat, and the lower surface of the shock-absorbing airbag is fixedly installed on the base surface.

Preferably, the side of the shock-absorbing airbag is provided with a sleeve, the lower surface of the sleeve is fixedly installed on the upper surface of the base, the bottom wall of the inner cavity of the sleeve is fixedly installed with a first spring, and the first The upper end of the spring is fixedly equipped with a piston, and the upper surface of the piston is fixedly connected with a connecting column, the upper end of the connecting column extends above the sleeve and is movably connected with the upper surface of the sleeve, and the upper end of the connecting column is fixedly connected on the lower surface of the mount.

Preferably, a second spring is sleeved between the connecting column and the sleeve, and the two ends of the second spring are respectively fixedly connected to the lower surface of the mounting base and the upper surface of the base.

Preferably, a through hole is opened on the surface of the piston, and a damping medium is arranged inside the sleeve.

Beneficial effect

The utility model provides a boiler induced draft fan. Compared with the prior art, it has the following beneficial effects:

1. The boiler induced draft fan, through the cooperation of the first filter, filter cotton and the second filter, filters the air entering the inside of the induced draft fan body to prevent particles in the outside air from entering the inside of the induced draft fan body. The fan body blows the wind with particles into the boiler, causing damage to the boiler _. It is more convenient to take out the first filter, filter cotton and second filter through the installation frame snapped into the inside of the air intake frame and the setting of the handle. The replacement has simple structure, convenient use and good effect, thereby achieving the effect of improving the service life of the equipment.

2. The induced draft fan of the boiler, through the cooperation of the shock absorbing air bag, the second spring and the first spring, weakens the vibration generated by the induced draft fan body during the working process, and at the same time transmits the vibration through the mounting seat and the connecting column, and through the damping medium The vibration is further absorbed to achieve the effect of shock absorption and noise reduction. The sound absorption layer absorbs the noise to achieve a better sound insulation effect and reduce the noise generated by the boiler induced draft fan during work _, thereby achieving the goal of improving the practicability of the equipment. Effect.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is the sectional structure schematic diagram of the utility model;

Fig. 3 is a schematic diagram of the cross-sectional structure of the air inlet pipe of the present invention;

Fig. 4 is a detailed sectional structure schematic diagram of the shock-absorbing base of the present invention.

In the figure: 1. Induced fan body; 2. Air inlet pipe; 3. Damping base; 4. Air outlet pipe; 11. Shell; 12. Silencer layer; 13. Rotation shaft; 14. Blade; 15. First gear ; 16, chain; 17, second gear; 18, motor; 21, air intake frame; 22, installation frame; 23, first filter screen; 24, filter cotton; 25, second filter screen; 26, handle; 27 , connecting pipe; 31, mounting seat; 32, base; 33, shock-absorbing airbag; 34, sleeve; 35, first spring; 36, damping medium; 37, piston; 38, connecting column; 39, second spring; 40, through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one:

Please refer to Figure 1-4, a boiler induced draft fan, including an induced draft fan body 1 for boiler induced draft, a shock absorbing base 3 for shock absorption is fixedly installed under the induced draft fan body 1, and the upper end of the induced draft fan body 1 is fixed An air inlet pipe 2 for filtering dust is connected, and an air outlet pipe 4 for air outlet is fixedly installed on the right side of the induced draft fan body 1. On the upper surface, the front and rear surfaces of the inner wall of the housing 11 are movably equipped with a rotating shaft 13 for rotation. One end of the rotating shaft 13 extends to the outside of the housing 11 and is movably connected with the outer wall of the housing 11. The side of the rotating shaft 13 is fixedly equipped with blades 14. One end of the rotating shaft 13 is fixedly connected with a first gear 15, the surface of the first gear 15 is meshed with a chain 16 for meshing transmission, one end of the chain 16 is meshed with a second gear 17, and the surface of the second gear 17 is fixedly connected with a chain for meshing transmission. The motor 18 that provides power, the lower surface of the motor 18 is fixedly installed on the upper surface of the shock-absorbing base 3, the air inlet duct 2 includes an air inlet frame 21, and the inner wall of the air inlet frame 21 is clamped with an installation frame for easy extraction and replacement of the filter screen 22. The upper end of the inner wall of the installation frame 22 is clamped with a first filter 23 for filtering dust, the lower end of the inner wall of the installation frame 22 is clamped with a second filter 25, and the first filter 23 and the second filter 25 are arranged There is a filter cotton 24 for enhancing the filtering effect, a handle 26 is fixedly installed on the right surface of the installation frame 22, and a connecting pipe 27 is fixedly connected to the lower surface of the air intake frame 21, and one end of the connecting pipe 27 is fixedly connected to the inside of the shell 11.

In this embodiment, the motor 18 starts to drive the second gear 17 to rotate, and the meshing transmission work of the second gear 17, the chain 16 and the first gear 15 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the blade 14 to rotate. Thereby the air is driven to flow, and the wind is driven to enter the inside of the casing 11 from the air inlet pipe 2 and blow the wind into the boiler through the air outlet pipe 4 to accelerate the combustion of fuel, and pass through the first filter screen 23, filter cotton 24 and the second filter screen 25, to filter the air entering the inside of the induced draft fan body 1, to prevent particles in the outside air from entering the inside of the induced draft fan body 1, and at the same time prevent the induced draft fan body 1 from blowing the wind with particles into the boiler, causing fuel combustion Insufficient damage to the boiler _, it is more convenient to take out the first filter 23, filter cotton 24 and second filter 25 for cleaning and replacement by clamping the installation frame 22 inside the air inlet frame 21 and setting the handle 26, the structure is simple, Easy to use.

Embodiment two:

Please refer to Figures 1-4, this embodiment provides a technical solution on the basis of Embodiment 1: a sound-absorbing layer 12 is fixedly installed inside the inner wall of the housing 11, the shock-absorbing base 3 includes a mounting seat 31, and the bottom of the mounting seat 31 A base 32 is provided, and a shock-absorbing airbag 33 is fixedly installed on the lower wall of the mounting seat 31. The lower surface of the shock-absorbing airbag 33 is fixedly installed on the upper surface of the base 32, and the side of the shock-absorbing airbag 33 is provided with a sleeve 34, and the sleeve 34 The lower surface of the sleeve 34 is fixedly installed on the upper surface of the base 32, the bottom wall of the inner cavity of the sleeve 34 is fixedly installed with a first spring 35, the upper end of the first spring 35 is fixedly installed with a piston 37, and the upper surface of the piston 37 is fixedly connected with a connecting column. 38, the upper end of the connecting column 38 extends to the top of the sleeve 34 and is movably connected with the upper surface of the sleeve 34, the upper end of the connecting column 38 is fixedly connected to the lower surface of the mounting seat 31, and the connecting column 38 and the outer sleeve of the sleeve 34 A second spring 39 is connected, and the two ends of the second spring 39 are respectively fixedly connected to the lower surface of the mounting base 31 and the upper surface of the base 32, the surface of the piston 37 is provided with a through hole 40, and the inside of the sleeve 34 is provided with a damping medium 36.

In this embodiment, through the cooperation of the shock-absorbing air bag 33, the second spring 39 and the first spring 35, the vibration generated by the induced draft fan body 1 during operation is weakened, and the vibration is transmitted through the mounting base 31 and the connecting column 38 at the same time. Vibration, the opening of the through hole 40 facilitates the flow of the damping medium 36 to generate friction with the piston 37, and at the same time further absorbs the vibration with the internal friction of the damping medium 36 to achieve the effect of shock absorption and noise reduction. To achieve a better sound insulation effect, reduce the noise generated by the boiler induced draft fan during work, reduce noise pollution, and optimize the working environment.

At the same time, the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

When working, the motor 18 starts to drive the second gear 17 to rotate, and the meshing transmission work of the second gear 17, the chain 16 and the first gear 15 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the blade 14 to rotate, thereby driving the air Flow, drive the wind from the air inlet pipe 2 into the inside of the shell 11 and blow the wind into the boiler through the air outlet pipe 4 to accelerate the combustion of fuel, through the cooperation of the first filter screen 23, the filter cotton 24 and the second filter screen 25 Work, filter the air entering the inside of the induced draft fan body 1, to prevent the induced draft fan body 1 from blowing the wind with particles into the boiler, resulting in insufficient fuel combustion and damage to the boiler _{, and} the installation frame 22 is snapped to the air intake frame 21 The interior of the inside and the handle 26 are set to make it easier to take out the first filter screen 23, filter cotton 24 and second filter screen 25 for cleaning and replacement, and through the cooperation of the shock absorbing airbag 33, the second spring 39 and the first spring 35, the The vibration generated by the induced draft fan body 1 during the working process is weakened, and the vibration is further absorbed by the setting of the damping medium 36, which has the effect of shock absorption and noise reduction, and the noise is absorbed by the sound-absorbing layer 12, which has a better sound insulation effect .

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (8)

1. A boiler induced draft fan, comprising an induced draft fan body (1) for boiler induced draft, characterized in that: the bottom of the induced draft fan body (1) is fixedly installed with a shock absorbing base (3) for shock absorption, The upper end of the induced draft fan body (1) is fixedly connected with an air inlet duct (2) for filtering dust, and the right side of the induced draft fan body (1) is fixedly installed with an air outlet pipe (4) for air outlet; The induced draft fan body (1) includes a casing (11), the lower end of the casing (11) is fixedly mounted on the upper surface of the shock-absorbing base (3), and the front and rear surfaces of the inner wall of the casing (11) are movably installed with The rotating shaft (13), one end of the rotating shaft (13) extends to the outside of the casing (11) and is movably connected with the outer wall of the casing (11), the side of the rotating shaft (13) is fixedly equipped with blades (14 ), one end of the rotating shaft (13) is fixedly connected with a first gear (15), and the surface meshing connection of the first gear (15) is connected with a chain (16) for meshing transmission, and the chain (16) of the One end is meshed with a second gear (17), the surface of the second gear (17) is fixedly connected with a motor (18) for providing power, and the lower surface of the motor (18) is fixedly installed on the shock-absorbing base (3) the upper surface of The air inlet duct (2) includes an air inlet frame (21), and the inner wall of the air inlet frame (21) is clamped with an installation frame (22) for conveniently extracting and replacing the filter screen, and the installation frame (22) The upper end of the inner wall is clamped with a first filter screen (23) for filtering dust, the lower end of the inner wall of the installation frame (22) is clamped with a second filter screen (25), and the first filter screen (23) and the second Filter cotton (24) for enhancing the filtering effect is arranged between the filter screens (25). 2. A boiler induced draft fan according to claim 1, characterized in that: a sound-absorbing layer (12) is fixedly installed inside the inner wall of the casing (11). 3. A boiler induced draft fan according to claim 1, characterized in that: a handle (26) is fixedly installed on the right surface of the installation frame (22). 4. A boiler induced draft fan according to claim 1, characterized in that: a connecting pipe (27) is fixedly connected to the lower surface of the air inlet frame (21), and one end of the connecting pipe (27) is fixedly connected to The inside of the housing (11). 5. A boiler induced draft fan according to claim 1, characterized in that: the shock-absorbing base (3) includes a mounting base (31), and a base (32) is provided below the mounting base (31), A shock-absorbing airbag (33) is fixedly installed on the lower wall of the mounting seat (31), and the lower surface of the shock-absorbing airbag (33) is fixedly installed on the upper surface of the base (32). 6. A boiler induced draft fan according to claim 5, characterized in that: a sleeve (34) is provided on the side of the shock-absorbing air bag (33), and the lower surface of the sleeve (34) is fixedly mounted on On the upper surface of the base (32), a first spring (35) is fixedly installed on the inner cavity bottom wall of the sleeve (34), and a piston (37) is fixedly installed on the upper end of the first spring (35). The upper surface of the piston (37) is fixedly connected with a connecting column (38), and the upper end of the connecting column (38) extends to the top of the sleeve (34) and is movably connected with the upper surface of the sleeve (34). The upper end of the post (38) is fixedly connected to the lower surface of the mounting base (31). 7. A boiler induced draft fan according to claim 6, characterized in that: a second spring (39) is sleeved on the outside of the connecting column (38) and the sleeve (34), and the second spring ( The two ends of 39) are respectively fixedly connected to the lower surface of the mount (31) and the upper surface of the base (32). 8. A boiler induced draft fan according to claim 6, characterized in that: the surface of the piston (37) is provided with a through hole (40), and the inside of the sleeve (34) is provided with a damping medium (36 ).

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