Air supply rectifier

Abstract

The utility model discloses a kind of air supply rectifiers, it is related to spray mechanical technical field, for the air supply wind flow of fan to air guide component is rectified, including cylindrical shell, several rectification fixed wings of circumferential arrangement are fixed in the cylindrical shell, several rectification fixed wings in lower part are resistance reduction fixed wing, the rest rectification fixed wings are wind stabilizing fixed wing;The wind stabilizing fixed wing includes oblique air guide section and plane wind stabilizing section sequentially arranged along the direction of the air supply wind flow, the plane wind stabilizing section is directly to the air guide component;Resistance reduction fixed wing is arranged obliquely consistent with the oblique air guide section, and the wind end of resistance reduction fixed wing is obliquely to the air guide component.The utility model can adapt air guide component to rectify, promote air guide component to guide out greater wind power, and it is beneficial to reduce working wind noise.

Description

Technical Field

[0001] This utility model relates to the field of spray machinery technology, and in particular to an air rectifier. Background Technology

[0002] A wind-assisted sprayer is a plant protection machine that uses a powerful airflow provided by a fan to deliver sprayed droplets to plants. Examples include the wind-assisted spraying device disclosed in utility model publication number "CN201510958U". Its main components include a fan, a rectifier, and an air guide assembly. The airflow generated by the fan is evenly distributed by the rectifier and then reaches the air guide assembly. The air guide assembly directs the airflow radially to create a large airflow output from above and to the sides. Nozzles are installed at the air outlet of the air guide assembly, thereby generating a greater lift for the sprayed droplets, achieving the purpose of high-altitude or long-span air delivery spraying.

[0003] The rectifier is a structure with multiple circumferentially arranged fixed winglets inside a cylindrical shell. These fixed winglets are designed at specific angles to ensure more even airflow from the fan to the air guide assembly. The air guide assembly mainly consists of a trumpet-shaped air guide plate, with an outlet blockage at the bottom. This guides the airflow through the trumpet-shaped structure, directing it to output airflow from above and to the sides. Furthermore, most air outlets of the air guide assembly are equipped with air vanes to further control the direction of the airflow from above and to the sides, adapting to different scenarios for wind-driven spraying applications.

[0004] In existing technologies, the fixed blades in rectifiers are mostly designed to be angled to align with the fan blades, achieving a certain degree of flow uniformity. However, the output airflow at the air guide assembly is limited, resulting in limited head and significant wind noise during operation. These factors restrict the widespread use of air-assisted sprayers. After in-depth research into this problem, the inventors discovered that the fundamental reason for the limited head and high wind noise lies in the mismatch between rectification and air guidance. Therefore, the inventors further improved the air-assisted spray section, especially the rectifier, leading to this invention. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an air supply rectifier that can be adapted to the air guide component for rectification, promote the air guide component to output greater air force, and help reduce working wind noise.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an air supply rectifier, used to rectify the airflow of the fan guide assembly, including a cylindrical shell, wherein a plurality of circumferentially arranged rectifier fixed wings are fixedly arranged inside the cylindrical shell, the plurality of rectifier fixed wings located at the lower part are drag-reducing fixed wings, and the remaining rectifier fixed wings are wind-stabilizing fixed wings; the wind-stabilizing fixed wings include an oblique wind-guiding section and a planar wind-stabilizing section arranged sequentially along the direction of the air supply airflow, the planar wind-stabilizing section being directly towards the air guide assembly; the drag-reducing fixed wings are arranged obliquely to the same direction as the oblique wind-guiding sections, and the air outlet of the drag-reducing fixed wings is obliquely towards the air guide assembly.

[0007] As a preferred technical solution, the wind-deflecting end of the wind-stabilizing fixed wing does not extend beyond the cylindrical outer shell.

[0008] As a preferred technical solution, the windward end of the drag-reducing fixed wing extends out of the cylindrical outer shell.

[0009] As a preferred technical solution, the oblique wind guide section is arranged in an arc shape.

[0010] As a preferred technical solution, the drag-reducing fixed wing is arranged in an arc shape.

[0011] As a preferred technical solution, the front guide vanes are fixedly provided at the air intake end of the rectifier fixed wing.

[0012] Due to the adoption of the above technical solution, the air supply rectifier is used to rectify the airflow from the fan guide assembly. It includes a cylindrical outer shell, within which several circumferentially arranged rectifying fixed wings are fixed. The lower rectifying fixed wings are drag-reducing fixed wings, while the remaining rectifying fixed wings are wind-stabilizing fixed wings. Each wind-stabilizing fixed wing includes an oblique wind-guiding section and a planar wind-stabilizing section arranged sequentially along the direction of the airflow. The planar wind-stabilizing section is directly facing the air guide assembly. The drag-reducing fixed wings are obliquely arranged in the same direction as the oblique wind-guiding sections, and their exhaust ends are obliquely facing the air guide assembly. In this invention, the lower rectifying fixed wings are purely oblique drag-reducing fixed wings, while the rest are wind-stabilizing fixed wings. The wind-stabilizing fixed wings guide the airflow at their positions to a near-direct flow towards the air guide assembly, with a slightly oblique airflow in the same direction as the oblique wind-guiding sections. Therefore, the airflow output from the upper part and the left and right sides of the air guide assembly exhibits a certain cyclone shape. The drag-reducing fixed wing guides the airflow at its location into a distinctly oblique flow, preventing the airflow from directly impacting the air guide assembly and causing vortices in the relatively enclosed space below the air guide assembly. This helps reduce operating noise and minimizes air pressure loss. The oblique airflow guided by the drag-reducing fixed wing flows smoothly to one side of the air guide assembly, and together with the slightly oblique airflow guided to the air guide assembly by the original stabilizing fixed wing, they are output from the side outlet of the air guide assembly. Furthermore, due to its larger swirling angle, this oblique airflow promotes a more pronounced swirling shape in the airflow output from the air guide assembly, further reducing air pressure loss and resulting in a stronger, more uniform, and stable overall airflow. Attached Figure Description

[0013] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0014] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a front view structural diagram of the wind direction in an embodiment of this utility model;

[0016] Figure 3 yes Figure 2 A schematic diagram of the AA structure;

[0017] Figure 4 yes Figure 2 BB structure diagram;

[0018] Figure 5 This is a top sectional view of the structure of the fan and air guide assembly used in this embodiment of the utility model;

[0019] Figure 6 yes Figure 5 Schematic diagram of the CC structure.

[0020] In the diagram: 1-Cylindrical outer shell; 2-Rectifying fixed wing; 3-Drag-reducing fixed wing; 4-Stabilizing fixed wing; 41-Angled wind guide section; 42-Planar wind stabilizing section; 5-Front guide vane; 8-Fan; 9-Wind guide assembly. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0022] like Figure 5 As shown, the air supply rectifier is used to rectify the airflow from the fan 8 to the airflow guide assembly 9. The fan 8 is an axial flow type, which generates the airflow by driving several circumferentially arranged rotating blades through a central rotating shaft. The airflow guide assembly 9 is mainly a trumpet-shaped air guide plate with an outlet block at the lower part. Thus, after being guided by the trumpet-shaped structure, the airflow is converted into radial airflow output from above and both sides. This is well-known technology in the field, and its structural principle will not be elaborated further here.

[0023] like Figure 1 and Figure 2 As shown, this embodiment includes a cylindrical outer shell 1, within which a plurality of circumferentially arranged rectifying fixed wings 2 are fixed. Preferably, as shown... Figure 5 As shown, the cylindrical outer shell 1 also serves as the outer shell of the fan 8, that is, the rotating blades of the fan 8 are also installed inside the cylindrical outer shell 1, which has a compact structure and helps to reduce wind power loss.

[0024] As 1 to Figure 4 As shown, the lower-level rectifier fixed wings 2 are drag-reducing fixed wings 3, and the remaining rectifier fixed wings 2 are wind-stabilizing fixed wings 4. The wind-stabilizing fixed wings 4 include an oblique wind-guiding section 41 and a planar wind-stabilizing section 42 arranged sequentially along the direction of the airflow. The planar wind-stabilizing section 42 is directly aligned with the air-guiding assembly 9. The drag-reducing fixed wings 3 are arranged obliquely to the same direction as the oblique wind-guiding section 41, and the air-departing end of the drag-reducing fixed wings 3 is obliquely aligned with the air-guiding assembly 9.

[0025] In this embodiment, several of the lower-level rectifier fixed wings 2 are configured as purely oblique drag-reducing fixed wings 3, while the rest are wind-stabilizing fixed wings 4. The wind-stabilizing fixed wings 4 guide the airflow at their positions to a near-direct flow towards the wind guide assembly 9, with a slightly oblique airflow in the same direction as the oblique wind guide section 41. Therefore, the airflow output above and on both sides of the wind guide assembly 9 exhibits a certain cyclone shape. The drag-reducing fixed wings 3, on the other hand, guide the airflow at their positions to a distinctly oblique airflow, preventing the airflow from directly impacting the wind guide assembly 9 and causing vortices in the relatively enclosed space below the wind guide assembly 9. This helps reduce operating wind noise and wind pressure loss. The oblique airflow guided by the drag-reducing fixed wings 3 can flow along one side of the wind guide assembly 9, and together with the slightly oblique airflow guided to the wind guide assembly 9 by the original wind-stabilizing fixed wings 4, it is output from the side outlet of the wind guide assembly 9. Figure 6 As shown, the oblique airflow, due to its larger swirl angle, promotes a more pronounced swirl in the airflow output by the air guide component 9, which helps to further reduce wind pressure loss and makes the overall wind force stronger and more uniform and stable.

[0026] Preferably, such as Figure 3 As shown, the air outlet of the wind-stabilizing fixed wing 4 does not extend beyond the cylindrical outer shell 1 to reduce its impact on the upward, leftward, and rightward airflow output of the air guide assembly 9. Figure 4 As shown, the air outlet of the drag-reducing fixed wing 3 extends out of the cylindrical outer shell 1 to further improve its airflow guidance and enable the airflow at the bottom of the air guide assembly 9 to flow more smoothly to the side.

[0027] Preferably, such as Figure 3 As shown, the oblique guide section 41 is arc-shaped to improve the smoothness of airflow guidance and reduce wind pressure loss. Similarly, as... Figure 4 As shown, the drag-reducing fixed wing 3 is arranged in an arc shape. Of course, a smooth curved surface shape that is not arc-shaped is also acceptable.

[0028] Preferably, such as Figures 1 to 5 As shown, the front guide vanes 5 are fixedly provided at the air inlet end of the rectifier fixed wing 2. The front guide vanes 5 are arranged in the space between the rotating blade of the fan 8 and the rectifier fixed wing 2 in this embodiment. The purpose is to directly guide the airflow generated by the rotating blade of the fan 8, avoid the flow separation of the airflow delivered by the fan 8 at the rectifier fixed wing 2 in this embodiment, further reduce the generation of eddies and reduce wind pressure loss, and promote the formation of large wind force at the air guide assembly 9.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air supply rectifier for rectifying the airflow from a fan guide assembly, comprising a cylindrical housing, wherein a plurality of circumferentially arranged rectifying fixed blades are fixedly disposed within the cylindrical housing, characterized in that: The lower part has several rectifier fixed wings that are drag-reducing fixed wings, and the remaining rectifier fixed wings are wind-stabilizing fixed wings. The wind-stabilizing fixed wings include an oblique wind-guiding section and a planar wind-stabilizing section arranged sequentially along the direction of the airflow. The planar wind-stabilizing section is directly facing the wind-guiding assembly. The drag-reducing fixed wings are arranged obliquely in the same direction as the oblique wind-guiding sections, and the wind-departing end of the drag-reducing fixed wings is obliquely facing the wind-guiding assembly.

2. The air supply rectifier as described in claim 1, characterized in that: The wind-deflecting end of the wind-stabilizing fixed wing does not extend beyond the cylindrical outer shell.

3. The air supply rectifier as described in claim 1, characterized in that: The windward end of the drag-reducing fixed wing extends out of the cylindrical outer shell.

4. The air supply rectifier as described in claim 1, characterized in that: The oblique wind guide section is arranged in an arc shape.

5. The air supply rectifier as described in claim 1, characterized in that: The drag-reducing fixed wing is arranged in an arc shape.

6. The air supply rectifier as described in any one of claims 1 to 5, characterized in that: The front guide vanes are fixedly installed at the air intake end of the rectifier fixed wing.

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