CN217843907U - Biomass steam boiler smoke discharging induced draft fan - Google Patents

Abstract

The utility model relates to the technical field of steam boilers, and discloses a biomass steam boiler flue gas discharge induced draft fan, comprising a fixed base, the upper end of the fixed base is fixedly connected with a sound-insulating outer casing, and the sides of the fixed base are fixedly connected There are connecting ear plates, and the inner side of the sound-insulating outer shell is provided with a sound-insulating board. The biomass steam boiler flue gas discharge induced draft fan is covered on the outside of the induced draft fan by the sound insulation shell to achieve protection and isolation, and the sound insulation board is installed on the inside for sound insulation and noise reduction. At the same time, the buffer spring is used to buffer the shaking of the fan shell , reduce the noise generated by the induced draft fan when it is running, and improve the practicability. During installation, use the adaptation of the air outlet pipe and the air outlet, and the connection between the air inlet pipe and the air inlet to facilitate the adaptation of the soundproof shell and the fan shell. And through the filter, the large particles in the flue gas can be filtered, so that the particles stay in the air inlet pipe. When cleaning, just disassemble the pipeline on the air inlet pipe, which improves the convenience.

Description

A biomass steam boiler flue gas exhaust fan

technical field

The utility model relates to the technical field of steam boilers, in particular to a biomass steam boiler flue gas discharge induced draft fan.

Background technique

Biomass steam boiler is a kind of biomass boiler, which is a steam boiler that specially burns biomass fuel as raw material; during the use of biomass steam boilers, induced draft fans are often used to discharge the gas generated by the boiler, and induced draft fans It is a device that generates negative pressure through the rotation of the fan, and then extracts air from the corresponding environment.

After retrieval (CN210662892U) discloses a biomass steam boiler flue gas discharge induced draft fan, comprising a fixed seat, the top of the fixed seat is provided with a groove, the top of the groove is provided with a top plate, and the bottom of the top plate is fixedly equipped with several As for the fixed block, spring slots are provided inside the several fixed blocks, the first springs are fixedly installed inside the several spring slots, and the bottom ends of the several first springs are all fixedly provided with support columns.

However, the existing biomass steam boiler flue gas discharge induced draft fan is prone to noise, which affects the working environment. At the same time, the flue gas contains impurities, which are easy to stay in the fan casing when passing through the induced draft fan, resulting in inconvenient cleaning and low practicability. Low.

Utility model content

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the utility model provides a biomass steam boiler flue gas exhaust induced draft fan to solve the problem that the existing biomass steam boiler flue gas exhaust induced draft fan proposed in the above background technology is prone to noise and affects work At the same time, the flue gas contains impurities, which are easy to stay in the fan casing when passing through the induced draft fan, resulting in inconvenient cleaning and low practicability.

(2) Technical solution

In order to achieve the above purpose, the utility model provides the following technical solutions: a biomass steam boiler flue gas exhaust fan, including a fixed base, the upper end of the fixed base is fixedly connected with a sound-insulating outer shell, and the sides of the fixed base are fixed Connecting ear plates are connected, the inner side of the sound-insulating outer shell is provided with a sound-insulating board, the side of the upper end of the fixed base is provided with an air inlet pipe, and a filter assembly is arranged in the air-inlet pipe, and the inner side of the sound-insulating outer shell The lower end is provided with a fan seat, and the fan seat and the fixed base are flexibly connected through a buffer assembly. The left side of the upper end of the fixed base is provided with a fan housing, and the right side of the upper end of the fixed base is equipped with a motor. The output end is provided with a transmission assembly.

Preferably, a fan is provided inside the fan housing, an air outlet is provided on the side of the upper end of the fan housing, an air inlet is provided at the front end of the fan housing, and the air inlet and the air inlet The pipes are connected to each other through corrugated pipes, and the flue gas outlet of the biomass steam boiler is connected through the air inlet pipe to perform smoke exhaust work, which is convenient for the connection and installation of the tuyere, so that the sound insulation shell is used to cover the outside of the induced draft fan to achieve sound insulation protection.

Preferably, the front end of the sound-insulating outer casing is provided with an air outlet pipe, and the side of the front-end surface of the sound-insulating outer casing is provided with cooling holes, and the cooling holes and the motor are adapted to each other, and the air outlet pipe and the air outlet pass through The corrugated pipes are connected to each other, and the external pipeline can be connected through the air outlet pipe to collect and process the exhausted smoke, and the cooling holes are used to facilitate the heat dissipation of the motor.

Preferably, the filter assembly includes a positioning frame and a filter screen, the rear end inside the air inlet pipe is fixedly connected with a positioning frame, and the front end of the positioning frame is provided with a filter screen, which can filter large particles in the smoke The treatment makes the particles stay in the air inlet pipe. When cleaning, just disassemble the pipeline on the air inlet pipe, which improves the convenience.

Preferably, two groups of buffer assemblies are arranged symmetrically on the front and rear sides of the fan seat, and three buffer assemblies are distributed at equal intervals in each group. The buffer assemblies include a positioning plate, a limit plate, a fixing seat, and a buffer spring , connecting rods and connecting nuts, the surface of the upper end of the fan seat is fixedly connected with a positioning plate, the positioning plate is designed in an arc-shaped structure, and two positioning plates are arranged symmetrically, and the inner sides of the two positioning plates are arranged There is a limit plate, the upper end of the limit plate extends to the top of the positioning plate and is fixedly connected with a fixed seat, the fixed seat and the fan seat are movably connected by a buffer spring, the upper end of the fixed seat is fixedly connected with a connecting rod, the The upper end of the connecting rod is fixedly connected with the fan base through a connecting nut, and the shaking of the fan is buffered by a buffer spring to reduce the noise generated by the fan.

Preferably, the limiting plate and the positioning plate are adapted to each other, and there are two limiting plates, and the two limiting plates are fixedly connected to the left and right sides of the fixing seat respectively, and the connecting nut and the connecting rod The threaded connection increases the buffer protection of the induced draft fan and reduces the shaking caused by the centrifugal force when the fan is running.

Preferably, the transmission assembly includes transmission wheel 1, transmission wheel 2 and a transmission rod, the output end of the motor is fixedly connected to the transmission wheel 1, the rear end of the fan is fixedly connected to the transmission rod, and the rear end of the transmission rod The end extends to the outer side of the fan housing and is fixedly connected with the second transmission wheel. The first transmission wheel and the second transmission wheel are connected by a transmission belt, and the transmission is realized through the transmission assembly, so that the motor drives the fan to rotate.

Compared with the prior art, the utility model provides a biomass steam boiler flue gas discharge induced fan, which has the following beneficial effects: the biomass steam boiler flue gas discharge induced fan is covered by a sound-insulating outer shell on the induced draft fan The outer side realizes protection and isolation, and the inner side is equipped with a sound insulation board for sound insulation and noise reduction. At the same time, the buffer spring is used to buffer the shaking of the fan casing, reducing the noise generated by the induced draft fan during operation and improving the practicability. The adaptation of the pipe and the air outlet, the connection of the air inlet pipe and the air inlet, facilitate the adaptation of the sound insulation shell and the fan shell, and the large particles in the flue gas can be filtered through the filter, so that the particles stay in the inlet In the air duct, when cleaning, just disassemble the pipeline on the air inlet duct, which improves the convenience.

Description of drawings

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

Fig. 2 is a schematic diagram of the three-dimensional structure of the fixed base of the present invention;

Fig. 3 is a schematic diagram of the three-dimensional structure of the fan housing of the utility model;

Fig. 4 is a schematic diagram of the cross-sectional structure of the utility model;

Fig. 5 is a schematic diagram of a partial structure of the buffer assembly of the present invention.

Among them: 1. Fixed base; 2. Soundproof shell; 201. Air outlet pipe; 202. Cooling hole; 3. Connecting ear plate; 4. Sound insulation board; 5. Air inlet pipe; 6. Filter assembly; 601. Positioning frame 602, filter screen; 7, fan seat; 8, buffer assembly; 801, positioning plate; 802, limit plate; 803, fixed seat; 804, buffer spring; 805, connecting rod; 806, connecting nut; 10, motor; 11, transmission assembly; 1101, transmission wheel one; 1102, transmission wheel two; 1103, transmission rod; 12, fan; 13, air outlet; 14, air inlet.

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.

Please refer to Figures 1-5, the utility model provides the following technical solutions: a biomass steam boiler flue gas discharge induced draft fan, including a fixed base 1, the upper end of the fixed base 1 is fixedly connected with a soundproof outer casing 2, and the side of the fixed base 1 The side is fixedly connected with a connecting ear plate 3, and the inner side of the sound-insulating outer shell 2 is provided with a sound-insulating board 4, and the side of the upper end of the fixed base 1 is provided with an air inlet pipe 5, and a filter assembly 6 is arranged in the air inlet pipe 5, and the filter assembly 6 includes The positioning frame 601 and the filter screen 602, the rear end of the air inlet pipe 5 is fixedly connected with the positioning frame 601, the front end of the positioning frame 601 is provided with a filter screen 602, and the large particles in the flue gas can be filtered through the filter screen 602, Make the particles stay in the air inlet pipe 5, when cleaning, just disassemble the pipeline on the air inlet pipe 5, which improves the convenience;

The lower end of the inner side of the soundproof shell 2 is provided with a fan base 7, the fan base 7 and the fixed base 1 are flexibly connected through a buffer assembly 8, and the buffer assembly 8 is located on the front and rear sides of the fan base 7. There are three equidistant distributions. The buffer assembly 8 includes a positioning plate 801, a limiting plate 802, a fixed seat 803, a buffer spring 804, a connecting rod 805 and a connecting nut 806. The surface of the upper end of the fan seat 7 is fixedly connected with a positioning plate 801, and the positioning plate 801 is designed in an arc-shaped structure, and two positioning plates 801 are arranged symmetrically. The inner side of the two positioning plates 801 is provided with a limiting plate 802. The upper end of the limiting plate 802 extends to the top of the positioning plate 801 and is fixedly connected with a fixed seat 803. The fixed base 803 and the fan base 7 are flexibly connected by a buffer spring 804, the upper end of the fixed base 803 is fixedly connected with a connecting rod 805, the upper end of the connecting rod 805 is fixedly connected with the fan base 7 through a connecting nut 806, the limiting plate 802 and the positioning plate 801 Compatible with each other, there are two limiting plates 802, and the two limiting plates 802 are respectively fixedly connected to the left and right sides of the fixing seat 803, the connecting nut 806 is threaded to the connecting rod 805, and the shaking of the induced draft fan is buffered by the buffer spring 804 , to reduce the noise generated by the induced draft fan;

The left side of the upper end of the fixed base 1 is provided with a fan housing 9, the right side of the upper end of the fixed base 1 is equipped with a motor 10, and the output end of the motor 10 is provided with a transmission assembly 11, and the transmission assembly 11 includes a transmission wheel 1101 and a transmission wheel 2 1102 and a transmission rod 1103, the output end of the motor 10 is fixedly connected with a transmission wheel 1101, the rear end of the fan 12 is fixedly connected with a transmission rod 1103, and the rear end of the transmission rod 1103 extends to the outside of the fan housing 9 and is fixedly connected with a transmission The second wheel 1102, the first transmission wheel 1101 and the second transmission wheel 1102 are connected by a transmission belt. The inside of the fan housing 9 is provided with a fan 12, and the side of the upper end of the fan housing 9 is provided with an air outlet 13. The fan housing The front end of 9 is provided with an air inlet 14, and the air inlet 14 and the air inlet pipe 5 are connected to each other through a corrugated pipe. , the cooling hole 202 and the motor 10 are adapted to each other, the air outlet pipe 201 and the air outlet 13 are connected to each other through the corrugated pipe, and the transmission is realized through the transmission assembly 11, so that the motor 10 drives the fan 12 to rotate, and the soundproof outer casing 2 is used to cover the lead. The outer side of the blower fan realizes protection and isolation, and the sound insulation board 4 is arranged on the inner side to carry out sound insulation and noise reduction, which improves the practicability.

Working principle: First, install the sound-insulating shell 2 on the outside of the induced draft fan, and make the lower end of the sound-insulating shell 2 and the fixed base 1 fit each other, and use the sound-insulating shell 2 and the sound-insulating board 4 for sound insulation protection, so that through the bellows The air inlet 14 and the air inlet pipe 5 are connected to each other, and the air inlet pipe 5 and the exhaust port of the biomass steam boiler are connected to each other, and the air outlet pipe 201 and the air outlet 13 are connected to each other by a corrugated pipe, and the air outlet Pipelines are installed on the pipe 201 to collect and process the flue gas. When in use, the motor 10 drives the first transmission wheel 1101 to rotate, so that the second transmission wheel 1102 drives the transmission rod 1103 to rotate, so that the fan 12 rotates in the fan housing 9. Make the flue gas enter through the air inlet pipe 5, and use the filter screen 602 to filter the large particles in the flue gas, so that the particles stay in the air inlet pipe 5. When cleaning, disassemble the pipeline on the air inlet pipe 5. Yes, the convenience is improved, and then the flue gas is discharged through the air outlet 13, and the vibration of the induced draft fan is buffered by the buffer spring 804 to reduce the noise generated by the induced draft fan.

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 (7)

1. A biomass steam boiler flue gas discharge induced draft fan, comprising a fixed base (1), characterized in that: the upper end of the fixed base (1) is fixedly connected with a soundproof shell (2), and the fixed base (1) ) is fixedly connected with a connecting ear plate (3), the inner side of the sound-insulating shell (2) is provided with a sound-insulating board (4), and the side of the upper end of the fixed base (1) is provided with an air inlet pipe (5 ), the air inlet pipe (5) is provided with a filter assembly (6), and the lower end of the inner side of the soundproof shell (2) is provided with a fan seat (7), and the fan seat (7) and the fixed base (1 ) is movably connected by a buffer assembly (8), a fan casing (9) is arranged on the left side of the upper end of the fixed base (1), and a motor (10) is installed on the right side of the upper end of the fixed base (1), so The output end of the motor (10) is provided with a transmission assembly (11). 2. A kind of biomass steam boiler flue gas discharge induced draft fan according to claim 1, characterized in that: a fan (12) is arranged on the inside of the fan housing (9), and the fan housing ( 9) The side of the upper end is provided with an air outlet (13), and the front end of the fan housing (9) is provided with an air inlet (14), and the air inlet (14) and the air inlet pipe (5) pass through the bellows interconnected. 3. A biomass steam boiler flue gas exhaust induced draft fan according to claim 2, characterized in that: the front end of the sound-insulating outer casing (2) is provided with an air outlet pipe (201), and the sound-insulating outer casing ( 2) Cooling holes (202) are provided on the side of the front face, and the cooling holes (202) and the motor (10) are adapted to each other, and the air outlet pipe (201) and the air outlet (13) are connected to each other through bellows . 4. A biomass steam boiler flue gas discharge induced draft fan according to claim 1, characterized in that: the filter assembly (6) includes a positioning frame (601) and a filter screen (602), and the air inlet pipe (5) A positioning frame (601) is fixedly connected to the inner rear end, and a filter net (602) is arranged at the front end of the positioning frame (601). 5. A biomass steam boiler flue gas exhaust induced draft fan according to claim 1, characterized in that: the buffer assembly (8) is located on the front and rear sides of the fan seat (7) and two groups are symmetrically arranged, each group There are three buffer assemblies (8) distributed at equal intervals, and the buffer assembly (8) includes a positioning plate (801), a limiting plate (802), a fixing seat (803), a buffer spring (804), a connecting rod ( 805) and connecting nuts (806), the surface of the upper end of the fan seat (7) is fixedly connected with a positioning plate (801), the positioning plate (801) is designed in an arc structure, and the positioning plate (801) is symmetrical Two positioning plates (801) are provided with a limiting plate (802) on the inner side of the two positioning plates (801), and the upper end of the limiting plate (802) extends to the top of the positioning plate (801) and is fixedly connected with a fixed seat (803 ), the fixed seat (803) and the fan seat (7) are flexibly connected by a buffer spring (804), and the upper end of the fixed seat (803) is fixedly connected with a connecting rod (805), and the connecting rod (805) The upper end and the fan seat (7) are fixedly connected by a connecting nut (806). 6. A biomass steam boiler flue gas discharge induced draft fan according to claim 5, characterized in that: the limiting plate (802) and the positioning plate (801) are compatible with each other, and the limiting plate (802 ) are provided with two, the two limiting plates (802) are respectively fixedly connected to the left and right sides of the fixing seat (803), and the connecting nut (806) is threadedly connected to the connecting rod (805). 7. A biomass steam boiler flue gas discharge induced draft fan according to claim 2, characterized in that: the transmission assembly (11) includes a transmission wheel one (1101), a transmission wheel two (1102) and a transmission rod ( 1103), the output end of the motor (10) is fixedly connected with a transmission wheel one (1101), the rear end of the fan (12) is fixedly connected with a transmission rod (1103), and the rear end of the transmission rod (1103) The second transmission wheel (1102) is fixedly connected to the outer side of the fan housing (9), and the first transmission wheel (1101) and the second transmission wheel (1102) are connected through a transmission belt.

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