Baffle structure for inlet of biomass boiler fan

Abstract

The utility model discloses a biomass boiler fan inlet baffle structure which comprises a fan body, an air inlet cylinder, a protective net, a fan plate and an adjusting fan plate, supporting legs are welded to the two sides of the bottom end of the fan body, a motor is fixed to the interior of the fan body through a support, fan blades are welded to the motor, and the fan blades are fixed to the fan body through a support. The front end of the fan body is welded and fixed to the air inlet barrel through a connecting strip, and a fan plate is fixed to the front end in the air inlet barrel. The adjusting fan plate is arranged on the rear side of the fan plate in the air inlet barrel, the area of the adjusting fan plate is larger than that of the air inlet, the rubber strip is arranged on the front end face of the adjusting fan plate, when the hydraulic cylinder controls the adjusting fan plate to be connected with the fan plate, the sealing effect can be achieved through the rubber strip, and when the air inlet size is adjusted, only the hydraulic cylinder needs to be controlled, and the operation is convenient. And the operation is simple, the air inlet amount can be adjusted through the backward movement of the adjusting fan plate, the air inlet track is uniform, and the adjusting fan plate is convenient to replace and overhaul.

Description

Technical Field

[0001] This utility model relates to the field of biomass boiler fan technology, specifically to an inlet baffle structure for a biomass boiler fan. Background Technology

[0002] Biomass boilers are a type of boiler that uses biomass energy as fuel. They are classified into biomass steam boilers, biomass hot water boilers, biomass hot air furnaces, biomass thermal oil furnaces, vertical biomass boilers, horizontal biomass boilers, etc. Regardless of the type of boiler, an induced draft fan is required.

[0003] Currently, patent application number 202020694226.7 discloses a boiler ventilator, including an air outlet and a duct. The front end of the duct is connected to the air outlet, and the rear end is connected to the air inlet. Because the tail end of the motor's heat sink is connected to a dustproof net, when the airflow enters from the inlet, it first passes through the smaller dustproof mesh holes of the dustproof net for dust filtration, filtering out dust carried in the air and preventing dust from entering the heat sink and clogging the heat dissipation holes. This allows the equipment to operate continuously and efficiently. Furthermore, since the dustproof net is located inside the duct, it does not affect the external structure of the fan and does not occupy external space, thus not affecting the installation and placement of the fan. A rubber liner is installed inside the duct of the boiler ventilator, which can largely prevent the inside of the duct from contacting moisture in the airflow, thereby preventing rust inside the duct and improving the performance of the boiler ventilator. However, based on the description of the above patent, some drawbacks still exist:

[0004] A dustproof screen is installed at the air inlet, but the air volume of the fan cannot be adjusted. If the motor speed is simply adjusted, even if the motor speed is adjusted and the air volume is reduced, the air force will not meet the requirements. Therefore, this utility model provides a biomass boiler fan inlet baffle structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a biomass boiler blower inlet baffle structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biomass boiler fan inlet baffle structure, comprising a fan body, an air inlet duct, a protective net, fan plates, and an adjusting fan plate. Support legs are welded to both sides of the bottom end of the fan body. A motor is fixed inside the fan body by a bracket, and fan blades are welded to the motor. The fan body is located at the front end and is welded to the air inlet duct by a connecting strip. A fan plate is fixed to the front end inside the air inlet duct. A connecting seat is provided at the center of the inner end of the fan plate, and multiple fan plates are distributed at equal angles. A fan-shaped air inlet is opened between two adjacent fan plates.

[0007] An inner cavity is provided at the front end of the air inlet duct, behind the fan plate. A connecting block is connected to the rear end of the connecting seat. An adjustable fan plate is welded on the connecting block. Multiple adjustable fan plates are distributed at equal angles and are located behind the air inlet. The front end face of the adjustable fan plate is provided with a rubber strip on the inner side, and the adjustable fan plate is sealed to the fan plate through the rubber strip.

[0008] A connecting rod is welded to the rear end inside the air inlet duct. A hydraulic cylinder is fixed at the center of the connecting rod by a mounting seat, and the front end of the hydraulic cylinder is connected to the connecting block by a piston rod.

[0009] In a preferred embodiment of this invention, the area of ​​the adjusting fan plate is larger than the area of ​​the air inlet, and the outer end face of the adjusting fan plate is located inside the inner cavity.

[0010] As a preferred embodiment of this utility model, a gap is provided between the outer end face of the adjusting fan plate and the inner wall of the inner cavity.

[0011] In a preferred embodiment of this invention, the number of adjustable fan plates is equal to the number of air inlets.

[0012] In a preferred embodiment of this invention, the rubber strip is made of a soft material, and the rubber strips on both sides of the adjusting fan plate are respectively located on both sides of the rear end face of the fan plate.

[0013] In a preferred embodiment of this invention, the regulating fan plate forms a sealing structure for the inlet air using a rubber strip.

[0014] As a preferred embodiment of this invention, the front end face of the air inlet duct is fitted with an embedded protective net.

[0015] In a preferred embodiment of this invention, the connecting rods are provided in three parts and are evenly distributed at an angle.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing an adjustable fan plate inside the air inlet duct on the rear side of the fan plate, the area of ​​the adjustable fan plate is larger than the air inlet, and the front end face of the adjustable fan plate is provided with a rubber strip. When the hydraulic cylinder controls the connection between the adjustable fan plate and the fan plate, the rubber strip can play a sealing role. Moreover, when adjusting the air intake, it is only necessary to control the hydraulic cylinder to move the adjustable fan plate backward. Not only can the air volume be adjusted, but the air force can still meet the requirements when adjusting the air volume. The operation is simple and efficient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a front view of the connection structure between the air inlet duct, fan plate, and air inlet of this utility model;

[0019] Figure 3 This is a front view of the connection structure between the air inlet duct, the regulating fan plate, and the air inlet of this utility model;

[0020] Figure 4 This is a front view of the adjusting fan plate of this utility model;

[0021] Figure 5 This is a front view of the connection structure between the fan plate and the adjusting fan plate of this utility model;

[0022] Figure 6 This is a right view of the internal structure of the air inlet duct of this utility model;

[0023] Figure 7 This is a front view of the connection structure between the connecting rod and the hydraulic cylinder of this utility model.

[0024] In the diagram: 1. Fan body; 2. Support leg; 3. Air inlet duct; 4. Connecting strip; 5. Protective net; 6. Fan plate; 7. Connecting seat; 8. Air inlet; 9. Inner cavity; 10. Connecting block; 11. Adjustable fan plate; 12. Rubber strip; 13. Connecting rod; 14. Mounting seat; 15. Hydraulic cylinder. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. "Multiple" means two or more, and unless otherwise explicitly limited, all of them fall within the scope of protection of this utility model.

[0028] Example 1: As Figure 1-2 This utility model provides a technical solution: including a fan body 1, an air inlet duct 3, a protective net 5, a fan plate 6, and an adjustable fan plate 11. The fan body 1 has support legs 2 welded to both sides of its bottom end. The fan body 1 has a motor fixed inside by a bracket, and a fan blade is welded to the motor. The fan body 1 is located at the front end and is welded to the air inlet duct 3 by a connecting strip 4. The front end of the air inlet duct 3 has a fan plate 6 fixed inside. The fan plate 6 has a connecting seat 7 at the center of its inner end. Multiple fan plates 6 are distributed at equal angles, and a fan-shaped air inlet 8 is opened between two adjacent fan plates 6.

[0029] An embedded protective net 5 is installed on the front end face of the air inlet duct 3.

[0030] In this embodiment, multiple air inlets are evenly distributed at different angles, resulting in a more uniform air intake. Furthermore, a protective net is provided on the front end of the air inlet duct to provide protection.

[0031] Example 2: Figure 1-7This utility model provides a technical solution: including a fan body 1, an air inlet duct 3, a protective net 5, a fan plate 6, and an adjustable fan plate 11. Support legs 2 are welded to both sides of the bottom end of the fan body 1. A motor is fixed inside the fan body 1 by a bracket, and a fan blade is welded to the motor. The fan body 1 is located at the front end and is welded to the air inlet duct 3 by a connecting strip 4. A fan plate 6 is fixed inside the front end of the air inlet duct 3. A connecting seat 7 is provided at the center of the inner end of the fan plate 6. Multiple fan plates 6 are distributed at equal angles, and a fan-shaped air inlet 8 is opened between two adjacent fan plates 6.

[0032] An inner cavity 9 is provided at the front end of the air inlet duct 3, behind the fan plate 6. A connecting block 10 is connected to the rear end of the connecting seat 7. An adjusting fan plate 11 is welded on the connecting block 10. Multiple adjusting fan plates 11 are distributed at equal angles and are located behind the air inlet 8. The front end face of the adjusting fan plate 11 is provided with a rubber strip 12 on the inner side, and the adjusting fan plate 11 is sealed to the fan plate 6 through the rubber strip 12.

[0033] A connecting rod 13 is welded to the rear end of the air inlet duct 3. The hydraulic cylinder 15 is fixed at the center of the connecting rod 13 by the mounting seat 14, and the front end of the hydraulic cylinder 15 is connected to the connecting block 10 by the piston rod.

[0034] The area of ​​the regulating fan plate 11 is larger than the area of ​​the air inlet 8, and the outer end face of the regulating fan plate 11 is inside the inner cavity 9.

[0035] There is a gap between the outer end face of the adjusting fan plate 11 and the inner wall of the inner cavity 9.

[0036] The number of regulating fan blades 11 is equal to the number of air inlets 8.

[0037] The rubber strip 12 is made of soft material, and the rubber strips 12 on both sides of the adjusting fan plate 11 are located on both sides of the rear end face of the fan plate 6.

[0038] The regulating fan plate 11 forms a sealing structure for the inlet air 8 through the rubber strip 12.

[0039] There are three connecting rods 13, which are evenly distributed at an angle.

[0040] In this embodiment, the position of the adjusting fan plate is controlled by a hydraulic cylinder connected to a solenoid valve, thereby adjusting the distance between the adjusting fan plates and thus adjusting the air intake. Moreover, the area of ​​the adjusting fan plate is larger than the area of ​​the air inlet, so the adjusting fan plate can be adjusted to fit together with the fan plate. The rubber strips ensure a sealed fit between the adjusting fan plates.

[0041] Working principle:

[0042] In use, an adjustable fan plate 11 is provided inside the air inlet duct 3 on the rear side of the fan plate 6. The area of ​​the adjustable fan plate 11 is larger than that of the air inlet 8, and the front end of the adjustable fan plate 11 is provided with a rubber strip 12. When the hydraulic cylinder 15 controls the connection between the adjustable fan plate 11 and the fan plate 6, the rubber strip 12 can play a sealing role. Moreover, when adjusting the air intake, it is only necessary to control the hydraulic cylinder 15 to make the adjustable fan plate 11 move backward. The hydraulic cylinder is controlled by a solenoid valve. The addition of a solenoid valve allows the hydraulic cylinder 15 to be positioned and controlled according to the needs of the adjustable fan plate 11, thereby controlling the air intake volume.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A biomass boiler fan inlet baffle structure, comprising a fan body (1), an air inlet duct (3), a protective net (5), a fan plate (6), and an adjusting fan plate (11), characterized in that: The fan body (1) has support legs (2) welded on both sides of the bottom end. The fan body (1) has a motor fixed inside by a bracket and fan blades welded on the motor. The fan body (1) is located at the front end of the fan body (1) and is welded to the air inlet (3) by a connecting strip (4). The air inlet (3) has a fan plate (6) fixed inside the front end. The fan plate (6) has a connecting seat (7) at the center of the inner end of the fan plate (6). The fan plates (6) are distributed at equal angles, and a fan-shaped air inlet (8) is opened between two adjacent fan plates (6). An inner cavity (9) is provided at the front end of the air inlet duct (3) at the rear side of the fan plate (6). A connecting block (10) is connected to the rear end of the connecting seat (7). An adjusting fan plate (11) is welded on the connecting block (10). Multiple adjusting fan plates (11) are distributed at equal angles. The adjusting fan plate (11) is located behind the air inlet (8). The front end face of the adjusting fan plate (11) is provided with a rubber strip (12) on the inner side. The adjusting fan plate (11) is sealed to the fan plate (6) through the rubber strip (12). A connecting rod (13) is welded to the rear end inside the air inlet duct (3). The hydraulic cylinder (15) is fixed at the center of the connecting rod (13) by a mounting seat (14), and the front end of the hydraulic cylinder (15) is connected to the connecting block (10) by a piston rod.

2. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The area of ​​the regulating fan plate (11) is larger than the area of ​​the air inlet (8), and the outer end face of the regulating fan plate (11) is inside the inner cavity (9).

3. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: There is a gap between the outer end face of the regulating fan plate (11) and the inner wall of the inner cavity (9).

4. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The number of regulating fan plates (11) is equal to the number of air inlets (8).

5. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The rubber strip (12) is made of soft material, and the rubber strips (12) on both sides of the adjusting fan plate (11) are located on both sides of the rear end face of the fan plate (6).

6. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The regulating fan plate (11) forms a sealing structure for the air inlet (8) through the rubber strip (12).

7. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The front end face of the air inlet duct (3) is fitted with an embedded protective net (5).

8. The biomass boiler fan inlet baffle structure according to claim 1, characterized in that: The connecting rod (13) has three parts and is evenly distributed at an angle.

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