Fan blade of livestock raising fan

Abstract

The utility model discloses a fan blade of a livestock raising fan. The fan blade comprises a shell, the splicing type blades are annularly and uniformly distributed on the outer side of the shell, each splicing type blade comprises a fixed type blade, an outer edge blade and at least one telescopic type blade, the fixed type blades are connected to the shell through a switching mechanism, the outer edge blades are movably connected to the fixed type blades through the telescopic type blades, and the telescopic type blades are movably connected to the shell through the switching mechanism. The fixed blades, the telescopic blades and the outer edge blades are connected through first fasteners. According to the utility model, the length of the blade can be adjusted according to the requirement of an actual use scene to meet the installation requirements of fans with different sizes, and the inclination angle of the blade can be adjusted to meet the adjustment requirements of different wind forces.

Description

Technical Field

[0001] This utility model relates to a fan blade for a livestock fan. Background Technology

[0002] Livestock fans, also known as negative pressure fans, are the latest type of ventilation fans. They belong to the category of axial flow fans and are called negative pressure fans because they are mainly used in negative pressure ventilation and cooling projects.

[0003] Livestock fans can solve the ventilation and cooling problems in livestock farms at the same time. Livestock fans are characterized by their large size, extra-large air duct, extra-large blade diameter, extra-large exhaust volume, ultra-low energy consumption, low speed, and low noise, and are widely used in the livestock industry.

[0004] In the existing technology, the blades of wind turbines are generally of a fixed size, which means that a blade of one size can only be used for a single model of wind turbine, making it impossible to assemble blades between different models of wind turbines, resulting in poor practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a technical solution for the blades of a livestock fan that addresses the shortcomings of existing technologies. This solution can not only adjust the blade length according to the needs of actual use scenarios to meet the installation requirements of fans of different sizes, but also adjust the blade tilt angle to meet the adjustment requirements of different wind forces.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A fan blade for a livestock fan, characterized in that it includes:

[0008] A shell;

[0009] The device includes several spliced ​​blades, which are evenly distributed in a ring on the outer side of the casing. Each spliced ​​blade consists of a fixed blade, an outer edge blade, and at least one telescopic blade. The fixed blade is connected to the casing via a connecting mechanism, and the outer edge blade is movably connected to the fixed blade via the telescopic blade. The fixed blade, the telescopic blade, and the outer edge blade are connected by a first fastener. Through the design of the above structure, not only can the length of the blades be adjusted according to the needs of the actual use scenario to meet the installation requirements of different sized fans, but the tilt angle of the blades can also be adjusted to meet the adjustment requirements of different wind speeds.

[0010] Furthermore, both the telescopic blades and the outer edge blades have two parallel limiting slide rails on their windward side, and both the fixed blades and the telescopic blades have two parallel limiting grooves on their leeward side. The limiting slide rails extend and retract along the limiting grooves to enable the telescopic blades and the outer edge blades to expand or retract. Through the design of the limiting slide rails and limiting grooves, the connection strength and stability between the telescopic blades and the fixed blades, and between the outer edge blades and the telescopic blades, can be improved, avoiding swaying after expansion or retraction, and improving the stability and reliability of the wind turbine blades during operation.

[0011] Furthermore, the vertical cross-section of both the limiting slide rail and the limiting slide groove is a 2 / 3 circular arc structure, which makes it easy for the limiting slide rail to be inserted into the limiting slide groove and move along the limiting slide groove, facilitating the length adjustment of the spliced ​​blades.

[0012] Furthermore, the fixed blade, the outer edge blade, and the telescopic blade all include a blade body, and the blade body is provided with several mounting holes. The telescopic blade and the fixed blade, as well as the outer edge blade and the telescopic blade, are connected by a first fastener passing through the mounting holes.

[0013] Furthermore, the tails of the fixed blades, outer edge blades, and telescopic blades are all equipped with serrations. The serrated structure can effectively improve the performance of the wind turbine blades and reduce noise.

[0014] Furthermore, the fixed blades, outer edge blades, and telescopic blades all have a long straight or long arc structure, which is beneficial for splicing between the fixed blades, outer edge blades, and telescopic blades.

[0015] Furthermore, the adapter mechanism includes a base and a rotating block. The base is located on the outside of the housing, and the rotating block is connected to the end face of the fixed blade. The base has a ring-shaped limiting groove inside, and the outer circumferential side of the rotating block has a ring-shaped limiting block. The limiting block matches the limiting groove, and the limiting block is connected to the base by a second fastener. By rotating the limiting block along the limiting groove, the rotating block can drive the spliced ​​blade to rotate, thereby adjusting the angle of the spliced ​​blade. After the spliced ​​blade is adjusted to the correct position, it is connected to the limiting block and the base by the second fastener, thus achieving the fixed installation of the spliced ​​blade.

[0016] Furthermore, both the limiting blocks and the limiting grooves are distributed in a plum blossom pattern.

[0017] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0018] This invention can not only adjust the blade length according to the needs of actual use scenarios to meet the installation requirements of fans of different sizes, but also adjust the blade tilt angle to meet the adjustment requirements of different wind forces. Attached image description:

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a rendering of the fan blades of a livestock fan according to the present invention;

[0021] Figure 2 This is a schematic diagram of the telescopic blade in this utility model;

[0022] Figure 3 This is a schematic diagram of the transfer mechanism in this utility model.

[0023] In the figure: 1-shell; 2-split blade; 3-base; 4-rotating block; 5-fixed blade; 6-telescopic blade; 7-outer edge blade; 8-blade body; 9-limiting slide rail; 10-limiting slide groove; 11-mounting hole; 12-serration; 13-limiting block; 14-limiting groove; 15-first fastener; 16-second fastener. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0027] like Figures 1 to 3 As shown, the blade of a livestock fan according to the present invention includes a housing 1 and several spliced ​​blades 2, which are evenly distributed in a ring on the outer side of the housing 1.

[0028] The splicing blade 2 includes a fixed blade 5, an outer edge blade 7, and at least one telescopic blade 6. The fixed blade 5 is connected to the housing 1 via a transfer mechanism. The transfer mechanism includes a base 3 and a rotating block 4. The base 3 is located on the outside of the housing 1, and the rotating block 4 is connected to the end face of the fixed blade 5. The base 3 has a ring-shaped limiting groove 14 inside, and the outer circumferential side of the rotating block 4 has a ring-shaped limiting block 13. The limiting block 13 matches the limiting groove 14, and the limiting block 13 is connected to the base 3 via a second fastener 16. By rotating the limiting block 13 along the limiting groove 14, the rotating block 4 can drive the splicing blade 2 to rotate, thereby adjusting the angle of the splicing blade 2. After the splicing blade 2 is adjusted to the correct position, it is connected to the limiting block 13 and the base 3 via the second fastener 16, thus achieving the fixed installation of the splicing blade 2.

[0029] Both the limiting block 13 and the limiting groove 14 are distributed in a plum blossom pattern.

[0030] The outer edge blade 7 is movably connected to the fixed blade 5 via the telescopic blade 6.

[0031] Both the telescopic blade 6 and the outer edge blade 7 have two parallel limiting slide rails 9 on their windward sides, and both the fixed blade 5 and the telescopic blade 6 have two parallel limiting grooves 10 on their leeward sides. The limiting slide rails 9 extend and retract along the limiting grooves 10 to enable the telescopic blade 6 and the outer edge blade 7 to expand or retract. The design of the limiting slide rails 9 and the limiting grooves 10 can improve the connection strength and stability between the telescopic blade 6 and the fixed blade 5, and between the outer edge blade 7 and the telescopic blade 6, to prevent swaying after expansion or retraction, and to improve the stability and reliability of the wind turbine during operation.

[0032] The vertical cross-sections of both the limiting slide rail 9 and the limiting slide groove 10 are 2 / 3 circular arc structures, which makes it easy for the limiting slide rail 9 to be inserted into the limiting slide groove 10 and move along the limiting slide groove 10, thus facilitating the length adjustment of the spliced ​​blade 2.

[0033] The fixed blade 5, the outer edge blade 7, and the telescopic blade 6 all include a blade body 8. The blade body 8 is provided with several mounting holes 11. The telescopic blade 6 and the fixed blade 5, and the outer edge blade 7 and the telescopic blade 6 are connected by a first fastener 15 passing through the mounting holes 11.

[0034] The tails of the fixed blade 5, the outer edge blade 7, and the telescopic blade 6 are all provided with serrations 12. The serration structure can effectively improve the performance of the wind turbine blades and reduce noise.

[0035] The fixed blade 5, the outer edge blade 7, and the telescopic blade 6 are all in the form of long straight lines or long arcs, which is conducive to the splicing of the fixed blade, the outer edge blade, and the telescopic blade.

[0036] The fixed blade 5, the telescopic blade 6, and the outer edge blade 7 are connected by the first fastener 15. Through the design of the above structure, not only can the length of the blades be adjusted according to the needs of the actual use scenario to meet the installation requirements of different sized fans, but the tilt angle of the blades can also be adjusted to meet the adjustment requirements of different wind forces.

[0037] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A fan blade for a livestock fan, characterized in that: include A shell; The housing includes several spliced ​​blades, which are evenly distributed in a ring on the outer side of the housing. Each spliced ​​blade includes a fixed blade, an outer edge blade, and at least one telescopic blade. The fixed blade is connected to the housing via a transfer mechanism, and the outer edge blade is movably connected to the fixed blade via the telescopic blade. The fixed blade, the telescopic blade, and the outer edge blade are connected by a first fastener.

2. The fan blade of a livestock fan according to claim 1, characterized in that: Both the telescopic blade and the outer edge blade have two parallel limiting slide rails on their windward side, and both the fixed blade and the telescopic blade have two parallel limiting grooves on their leeward side. The limiting slide rails extend and retract along the limiting grooves to enable the telescopic blade and the outer edge blade to expand or retract.

3. The fan blade of a livestock fan according to claim 2, characterized in that: The vertical cross-section of both the limiting slide rail and the limiting slide groove is a 2 / 3 circular arc structure.

4. The fan blade of a livestock fan according to claim 1, characterized in that: The fixed blade, the outer edge blade, and the telescopic blade all include a blade body. The blade body is provided with a plurality of mounting holes. The telescopic blade and the fixed blade, as well as the outer edge blade and the telescopic blade, are connected by the first fastener passing through the mounting holes.

5. The fan blade of a livestock fan according to claim 1, characterized in that: The tails of the fixed blade, the outer edge blade, and the telescopic blade are all provided with serrations.

6. The fan blade of a livestock fan according to claim 1, characterized in that: The fixed blade, the outer edge blade, and the telescopic blade are all in the form of a long straight line structure or a long arc structure.

7. The fan blade of a livestock fan according to claim 1, characterized in that: The adapter mechanism includes a base and a rotating block. The base is located on the outside of the housing, and the rotating block is connected to the end face of the fixed blade. The base has a ring-shaped limiting groove inside, and the outer circumferential side of the rotating block has a ring-shaped limiting block. The limiting block matches the limiting groove, and the limiting block is connected to the base by a second fastener.

8. The fan blade of a livestock fan according to claim 7, characterized in that: Both the limiting block and the limiting groove are distributed in a plum blossom pattern.

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