Cylinder axial flow fan with guide vane

Abstract

This utility model relates to the field of fan technology, specifically to a cylindrical axial flow fan with guide vane valves. It includes a fan body, a valve body fixedly connected to the fan body, a fixed seat inside the valve body, and several guide vane assemblies on the side of the fixed seat. Each guide vane assembly is equipped with a positioning shaft rotatably connected to the valve body. An adjusting rod is fixedly connected to the positioning shaft, and a connecting shaft is fixedly connected to the end of the adjusting rod. The valve body has a linkage ring, and several fixed shafts are fixedly connected to the linkage ring corresponding to the positioning shafts. Both the fixed shafts and the connecting shafts are equipped with ball seats. In this utility model, the guide vane assemblies are mounted on the fixed seat. An electric actuator can drive a positioning shaft to rotate, which in turn drives the guide vane assemblies to rotate. This allows adjustment of the guide vane assemblies' angle, thereby changing the cross-sectional area of ​​the airflow and adjusting the static pressure and airflow. Under different operating conditions, this helps maintain good operating efficiency of the fan body.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a cylindrical axial flow fan with guide vane valve. Background Technology

[0002] The working principle of a cylindrical axial flow fan is to use a motor to drive an impeller to rotate inside a cylindrical casing. Gas enters from the collector, gains energy through the impeller, increases pressure and velocity, and is then discharged axially. In existing cylindrical axial flow fans, air usually enters directly into the fan through the inlet. The static pressure and air volume of the cylindrical axial flow fan are relatively fixed. This may reduce the operating efficiency of the cylindrical axial flow fan under different operating conditions. Utility Model Content

[0003] The purpose of this invention is to provide a cylindrical axial flow fan with guide vane valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A cylindrical axial flow fan with guide vane valve includes a fan body, a valve body fixedly connected to the fan body, a fixed seat inside the valve body, several guide vane assemblies on the side of the fixed seat, a positioning shaft rotatably connected to the guide vane assembly, an adjusting rod fixedly connected to the positioning shaft, a connecting shaft fixedly connected to the end of the adjusting rod, a linkage ring on the valve body, several fixed shafts fixedly connected to the linkage ring corresponding to the several positioning shafts, ball seats on both the fixed shafts and the connecting shafts, a connecting rod rotatably connecting two adjacent ball seats, and an electric actuator on the valve body, the output end of the electric actuator being drivenly connected to the end of one positioning shaft.

[0006] Furthermore, the valve body is fixedly connected to several limiting seats, and the limiting seats are rotatably connected to limiting wheels. The linkage ring is disposed on the several limiting wheels, and the side of the limiting wheel is provided with a groove. The inner edge of the linkage ring abuts against the inside of the groove.

[0007] Furthermore, the end of the fixed seat is fixedly connected to several fixed plates that are fixedly connected to the inside of the valve body.

[0008] Furthermore, the electric actuator is fixedly connected to a support base that is fixedly connected to the valve body.

[0009] Furthermore, the guide vane assembly includes two U-shaped frames, with guide vanes fixedly connected to the U-shaped frames. The guide vane assembly consists of two parts, each of which is composed of a U-shaped frame and a guide vane.

[0010] Furthermore, the positioning shaft is fixedly connected to a rectangular rod that is fixedly connected to two adjacent U-shaped frames.

[0011] Preferably, the fixed base is rotatably connected to a plurality of limiting shafts, and the limiting shafts are fixedly connected to rectangular rods that are fixedly connected to two adjacent U-shaped frames.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Several guide vane assemblies are installed on the fixed base. An electric actuator can drive a positioning shaft to rotate. The positioning shaft can drive a linkage ring to rotate via an adjusting rod, connecting shaft, connecting rod, and fixed shaft. The linkage ring can drive the remaining positioning shafts to rotate via the fixed shaft, connecting rod, connecting shaft, and adjusting rod. When the positioning shaft rotates, it can drive the guide vane assemblies to rotate, thus adjusting the angle of the guide vane assemblies, thereby changing the cross-sectional area of ​​the airflow, adjusting the static pressure and air volume. Under different operating conditions, the fan body can maintain a better operating efficiency as much as possible. The guide vane assemblies can change the direction of airflow, allowing the air to enter the fan body with a certain direction, so that the gas can enter the fan body more smoothly, which helps to reduce flow losses and improve overall efficiency. At the same time, when the guide vane assemblies and the fan blades of the fan body are parallel, it helps to reduce the vibration generated by the operation of the fan body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the cylindrical axial flow fan with guide vane valve of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the valve body in this utility model;

[0016] Figure 3 This is a schematic diagram of the linkage ring structure in this utility model;

[0017] Figure 4 This is a schematic diagram of the positioning shaft structure in this utility model;

[0018] Figure 5 This is a schematic diagram of the guide vane assembly structure in this utility model.

[0019] In the diagram: 10. Fan body; 20. Valve body; 21. Fixed seat; 22. Fixed plate; 23. Limit seat; 24. Limit wheel; 30. Guide vane assembly; 31. U-shaped frame; 32. Guide vane; 40. Ball seat; 50. Linkage ring; 51. Fixed shaft; 60. Electric actuator; 61. Support seat; 70. Positioning shaft; 71. Adjusting rod; 72. Connecting shaft; 73. Rectangular rod one; 80. Limit shaft; 81. Rectangular rod two; 90. Connecting rod. Detailed Implementation

[0020] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 In this embodiment of the present invention, a cylindrical axial flow fan with guide vane valve includes a fan body 10, a valve body 20 fixedly connected to the fan body 10, the valve body 20 being disposed at the air inlet end of the fan body 10, a fixing seat 21 being disposed inside the valve body 20, and a plurality of fixing plates 22 fixedly connected to the end of the fixing seat 21 and fixedly connected to the inside of the valve body 20, the valve body 20 being fixed to the fixing seat 21 by the fixing plates 22, a plurality of guide vane assemblies 30 being disposed on the side of the fixing seat 21, the guide vane assembly 30 being disposed with a positioning shaft 70 rotatably connected to the valve body 20, an adjusting rod 71 being fixedly connected to the positioning shaft 70, and a connecting shaft 72 being fixedly connected to the end of the adjusting rod 71, the valve body 20 being provided with A linkage ring 50 is provided, and a number of fixed shafts 51 are fixedly connected to a number of positioning shafts 70. Both the fixed shafts 51 and the connecting shafts 72 are provided with ball seats 40. A connecting rod 90 is rotatably connected between two adjacent ball seats 40. The ball seats 40 are respectively sleeved on the corresponding fixed shafts 51 and connecting shafts 72. The side of the ball seat 40 is spherical, and the end of the connecting rod 90 is rotatably set on the spherical surface of the ball seat 40. The valve body 20 is provided with an electric actuator 60. The output end of the electric actuator 60 is connected to the end of a positioning shaft 70. The electric actuator 60 is fixedly connected to a support seat 61 fixedly connected to the valve body 20. The support seat 61 can support the electric actuator 60.

[0022] Specifically, during the operation of the blower body 10, an electric actuator 60 can drive a positioning shaft 70 to rotate. The positioning shaft 70 can drive an adjusting rod 71 to rotate. The adjusting rod 71 can pull a connecting rod 90 to move via a connecting shaft 72 and a ball seat 40. The connecting rod 90 can pull a linkage ring 50 to rotate via a corresponding ball seat 40 and a fixed shaft 51. The linkage ring 50 can drive the remaining connecting rods 90 to rotate via the fixed shaft 51 and the ball seat 40. The connecting rods 90 can drive adjacent positioning shafts 70 to rotate via the ball seat 40 and the connecting shaft 72. Thus, several positioning shafts 70 are linked together through the linkage ring 50 and the ball seat 40, causing several positioning... The shaft 70 rotates synchronously, and the positioning shaft 70 can drive the adjacent guide vane assembly 30 to rotate. This allows the angle of the guide vane assembly 30 to be adjusted, changing the cross-sectional area of ​​airflow, adjusting static pressure and air volume. Under different operating conditions, this helps to maintain good operating efficiency of the fan body 10. The guide vane assembly 30 can also change the direction of airflow, allowing the air to enter the fan body 10 more smoothly, which helps to reduce flow losses and improve overall efficiency. At the same time, when the guide vane assembly 30 is adjusted to be parallel to the fan blades of the fan body 10, it has a certain effect of reducing the vibration generated by the operation of the fan body 10.

[0023] Example 1

[0024] like Figure 1-3 As shown, in this embodiment, the valve body 20 is fixedly connected with several limiting seats 23, and the limiting seats 23 are rotatably connected to limiting wheels 24. The linkage ring 50 is disposed on several limiting wheels 24, and the side of the limiting wheel 24 is provided with a groove. The inner edge of the linkage ring 50 abuts against the inside of the groove. The limiting wheel 24 supports and limits the linkage ring 50 through the groove.

[0025] In specific implementation, the limiting seat 23 can support the limiting wheel 24. The limiting wheel 24 can limit the position of the linkage ring 50 through the groove, thereby maintaining the position and angle of the linkage ring 50. When the electric actuator 60 drives a positioning shaft 70 to rotate, and a connecting rod 90 pulls the linkage ring 50 to rotate through the fixed shaft 51, the linkage ring 50 can rotate relative to several limiting wheels 24, so that the limiting wheels 24 roll in the limiting seat 23. Since the ball seat 40 has a spherical surface, the connecting rod 90 can rotate up or down relative to the adjusting rod 71, and the connecting rod 90 can rotate in the direction away from or towards the linkage ring 50.

[0026] like Figure 5 As shown, in this embodiment, the guide vane assembly 30 includes two U-shaped frames 31, and guide vanes 32 are fixedly connected to the U-shaped frames 31. The guide vane assembly 30 consists of two parts, each of which consists of a U-shaped frame 31 and a guide vane 32.

[0027] In practice, the two U-shaped frames 31 are aligned with each other to form a rectangular frame, which can guide the air through the guide vanes 32 and change the direction of airflow.

[0028] Example 2

[0029] Based on Example 1, such as Figure 4 and Figure 5 As shown, in this embodiment, the positioning shaft 70 is fixedly connected to a rectangular rod 73 that is fixedly connected to two adjacent U-shaped frames 31, and the fixing seat 21 is rotatably connected to a plurality of limiting shafts 80, and the limiting shafts 80 are fixedly connected to a rectangular rod 81 that is fixedly connected to two adjacent U-shaped frames 31.

[0030] In specific implementation, both rectangular rod 73 and rectangular rod 81 are fixedly set between the two U-shaped frames 31. The positioning shaft 70 can drive the two U-shaped frames 31 to rotate through the rectangular rod 73, thereby adjusting the angle of the guide vane 32. The U-shaped frames 31 can drive the rectangular rod 81 to rotate, so that the limiting shaft 80 rotates on the fixed seat 21. The fixed seat 21 can limit the U-shaped frames 31 through the limiting shaft 80 and the rectangular rod 81, which is beneficial to improving the stability of the guide vane assembly 30.

[0031] Two circular holes can be made on the U-shaped frame 31, and two circular holes can be made on the rectangular rod 73 and the rectangular rod 81, so that the circular holes 73 and 81 correspond to the two circular holes 1 on the U-shaped frame 31. Two bolts can be passed through the circular holes 1 on the two U-shaped frames 31, and the two bolts can pass through the circular holes 2 on the rectangular rod 73 and the rectangular rod 81, respectively. After tightening the nuts on the bolts, the two U-shaped frames 31 can be fastened to the rectangular rod 73 and the rectangular rod 81 by the bolts and nuts. Thus, the rectangular rod 73 and the rectangular rod 81 are fixed to the two U-shaped frames 31, which makes it easy to assemble the guide vane assembly 30 inside the valve body 20. After removing the bolts, it is easy to remove the corresponding guide vane assembly 30, which is convenient for replacing the guide vane assembly 30.

[0032] 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.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylindrical axial flow fan with guide vane valve, comprising a fan body (10), wherein a valve body (20) is fixedly connected to the fan body (10), and a fixing seat (21) is provided inside the valve body (20), characterized in that, The fixed base (21) is provided with several guide vane assemblies (30) on its side. Each guide vane assembly (30) is provided with a positioning shaft (70) that is rotatably connected to the valve body (20). The positioning shaft (70) is fixedly connected with an adjusting rod (71). The end of the adjusting rod (71) is fixedly connected with a connecting shaft (72). The valve body (20) is provided with a linkage ring (50). The linkage ring (50) is fixedly connected with several fixed shafts (51) corresponding to several positioning shafts (70). Both the fixed shaft (51) and the connecting shaft (72) are provided with ball seats (40). A connecting rod (90) is rotatably connected between two adjacent ball seats (40). The valve body (20) is provided with an electric actuator (60). The output end of the electric actuator (60) is drivenly connected to the end of a positioning shaft (70).

2. The cylindrical axial flow fan with guide vane valve according to claim 1, characterized in that, The valve body (20) is fixedly connected to several limiting seats (23), and the limiting seats (23) are rotatably connected to limiting wheels (24). The linkage ring (50) is set on several limiting wheels (24).

3. The cylindrical axial flow fan with guide vane valve according to claim 1, characterized in that, The end of the fixed seat (21) is fixedly connected to several fixed plates (22) that are fixedly connected to the inside of the valve body (20).

4. The cylindrical axial flow fan with guide vane valve according to claim 1, characterized in that, The electric actuator (60) is fixedly connected to a support base (61) that is fixedly connected to the valve body (20).

5. The cylindrical axial flow fan with guide vane valve according to any one of claims 1-4, characterized in that, The guide vane assembly (30) includes two U-shaped frames (31), and the guide vanes (32) are fixedly connected to the U-shaped frames (31).

6. The cylindrical axial flow fan with guide vane valve according to claim 5, characterized in that, The positioning shaft (70) is fixedly connected to a rectangular rod (73) that is fixedly connected to two adjacent U-shaped frames (31).

7. The cylindrical axial flow fan with guide vane valve according to claim 5, characterized in that, The fixed base (21) is rotatably connected to several limiting shafts (80), and the limiting shafts (80) are fixedly connected to rectangular rods (81) that are fixedly connected to two adjacent U-shaped frames (31).

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