Industrial fan opening and closing adjustment mechanism

Abstract

This utility model discloses an industrial fan opening and closing adjustment mechanism, specifically relating to the field of ventilation machinery technology. It includes a mounting frame, with a first fixed frame and a second fixed frame fixedly welded to both sides of the mounting frame. Several first fixed plates are disposed between the first and second fixed frames. Multiple rotating rods are rotatably connected within the mounting frame. Closing blades are connected to the outer walls of the rotating rods. One end of a rotating rod passing through a first fixed plate is connected to a drive shaft. Two drive connecting rods are fixedly disposed on the outer wall of the drive shaft. A transmission bar is rotatably connected to both ends of each drive connecting rod. The remaining rotating rods have connecting shafts at their ends passing through the first fixed plates. Driven connecting rods are fixedly disposed on the outer wall of the connecting shafts. Two transmission bars are rotatably connected to multiple driven connecting rods via the connecting rotating shafts. Through the compact connection between the various components, the stability of the closing blades during opening and closing can be improved, thereby enhancing the opening and closing effect of the industrial fan.

Description

Technical Field

[0001] This utility model relates to the field of ventilation machinery technology, and more specifically, to an industrial fan opening and closing adjustment mechanism. Background Technology

[0002] Industrial centrifugal and axial flow fans typically require the inlet to be in a "fully closed" state during startup to reduce the starting current; during operation, the opening needs to be adjusted in real time according to the load; and during shutdown and maintenance, it must be reliably closed to prevent backflow of air. Therefore, an industrial fan opening and closing adjustment mechanism is needed.

[0003] However, when using existing industrial fan opening and closing adjustment mechanisms, the loose connections between various components can cause the closing blades of the industrial fan to be unable to open or close stably, leading to jamming and affecting the closing adjustment effect of the industrial fan.

[0004] Therefore, an industrial fan start-up and shut-down adjustment mechanism is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an industrial fan opening and closing adjustment mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an industrial fan opening and closing adjustment mechanism, including a mounting frame. A first fixed frame and a second fixed frame are fixedly welded to both sides of the mounting frame. A plurality of first fixed plates are fixedly arranged at equal distances between the first and second fixed frames, with the first fixed plates located on one side of the first and second fixed frames. A plurality of rotating rods are rotatably connected within the mounting frame. A closing leaf is connected to the outer wall of each rotating rod. One end of each rotating rod rotatably passes through a first fixed plate. A drive shaft is connected to the end of one rotating rod that passes through the first fixed plate. Two active connecting inclined rods are fixedly arranged on the outer wall of the drive shaft. A transmission bar is rotatably connected to both ends of each active connecting inclined rod. A connecting shaft is connected to the end of the remaining rotating rods that passes through the first fixed plate. A driven connecting inclined rod is fixedly arranged on the outer wall of the connecting shaft. Two transmission bars are rotatably connected to the plurality of driven connecting inclined rods via the connecting rotating shaft.

[0007] Preferably, one end of one of the rotating rods is connected to a servo motor for adjusting the rotation of the drive shaft.

[0008] Preferably, a plurality of limiting rods are fixedly arranged at equal intervals within the mounting frame, and one limiting rod is distributed on one side of each of the closed leaves.

[0009] Preferably, the surfaces of the first fixing frame and the second fixing frame are provided with a plurality of connecting holes at equal intervals.

[0010] Preferably, a fixing plate is fixedly welded to the outer wall of one end of the mounting frame, the fixing plate has a connecting hole, and two reinforcing plates are symmetrically arranged between the fixing plate and the outer wall of the mounting frame.

[0011] Preferably, a plurality of second fixing plates are fixedly arranged at equal distances between the first fixing frame and the second fixing frame, and the plurality of second fixing plates are located on the other side of the first fixing frame and the second fixing frame.

[0012] Preferably, the closing leaf includes a first blade, a second blade, and a fixing bolt. The first blade and the second blade are located on the outer wall of the rotating rod, and the first blade and the fixing bolt are fixedly connected to the rotating rod by the fixing bolt.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] Compared with existing technologies, this industrial fan opening and closing adjustment mechanism uses a rotating drive shaft to drive a drive connecting rod to rotate. The rotating drive connecting rod drives two transmission bars to move away from each other. Then, the two moving transmission bars drive multiple driven connecting rods to rotate, which in turn drives the connecting shaft and the rotating rod to rotate. Subsequently, the rotating rod drives the closing blade to rotate, and the rotating closing blade closes the mounting frame. This structure, through the compact connection between the various components, can improve the stability of the closing blade when it opens and closes, and at the same time improve the opening and closing effect of the industrial fan. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a second-view three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the third-view three-dimensional structure of this utility model.

[0018] The attached figures are labeled as follows: 1. First fixed frame; 2. Second fixed frame; 3. Mounting frame; 4. Limiting rod; 5. Closing leaf; 501. First blade; 502. Second blade; 503. Fixing bolt; 6. First fixing plate; 7. Connecting shaft; 8. Driven connecting diagonal rod; 9. Transmission bar; 10. Connecting rotating shaft; 11. Drive shaft; 12. Driven connecting diagonal rod; 13. Connecting hole; 14. Rotating rod; 15. Fixing plate; 16. Reinforcing plate; 17. Second fixing plate. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] As attached Figure 1 The industrial fan opening and closing adjustment mechanism shown in Figure 4 includes a mounting frame 3. A first fixed frame 1 and a second fixed frame 2 are fixedly welded to both sides of the mounting frame 3. Several connecting holes 13 are evenly spaced on the surfaces of the first fixed frame 1 and the second fixed frame 2. Several first fixed plates 6 are evenly spaced between the first fixed frame 1 and the second fixed frame 2, with the first fixed plates 6 located on one side of the first fixed frame 1 and the second fixed frame 2. Several rotating rods 14 are rotatably connected inside the mounting frame 3. Closing blades 5 are connected to the outer walls of the rotating rods 14. One end of each rotating rod 14 rotatably passes through the first fixed frame 1. A fixed plate 6 is provided. A rotating rod 14 passes through one end of the first fixed plate 6 and is connected to a drive shaft 11. A servo motor for adjusting the rotation of the drive shaft 11 is connected to one end of the rotating rod 14. Two active connecting rods 12 are fixedly provided on the outer wall of the drive shaft 11. A transmission bar 9 is rotatably connected to both ends of the active connecting rods 12. The remaining rotating rods 14 pass through one end of the first fixed plate 6 and are connected to a connecting shaft 7. A driven connecting rod 8 is fixedly provided on the outer wall of the connecting shaft 7. The two transmission bars 9 are rotatably connected to the multiple driven connecting rods 8 through the connecting rotating shaft 10.

[0022] When the industrial fan is closed, the servo motor first drives the rotating rod 14 to rotate, and then the rotating rod 14 drives the drive shaft 11 and the active connecting rod 12 to rotate. Subsequently, the rotating active connecting rod 12 drives the two transmission bars 9 to move away from each other. Then, the two transmission bars 9 that move away from each other drive multiple driven connecting rods 8 to rotate, which in turn drives the connecting shaft 7 and the rotating rod 14 to rotate. Subsequently, the rotating rod 14 drives the closing leaf 5 to rotate, and the rotating closing leaf 5 closes the mounting frame 3. This structure, through the compact connection between the various components, can improve the stability of the closing leaf 5 when opening and closing, and at the same time improve the opening and closing effect of the industrial fan.

[0023] Example 2

[0024] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figure 1 As shown in Figure 4, see the description below for details:

[0025] In a preferred embodiment, several limiting rods 4 are fixedly arranged at equal intervals within the mounting frame 3, and one limiting rod 4 is distributed on one side of each closed leaf 5. Meanwhile, a fixing plate 15 is fixedly welded to the outer wall of one end of the mounting frame 3, and a connecting hole 13 is opened on the fixing plate 15. Then, two reinforcing plates 16 are symmetrically arranged between the fixing plate 15 and the outer wall of the mounting frame 3. Subsequently, several second fixing plates 17 are fixedly arranged at equal intervals between the first fixing frame 1 and the second fixing frame 2, and the several second fixing plates 17 are located on the other side of the first fixing frame 1 and the second fixing frame 2.

[0026] In a preferred embodiment, the closing leaf 5 includes a first blade 501, a second blade 502, and a fixing bolt 503. The first blade 501 and the second blade 502 are located on the outer wall of the rotating rod 14, and the first blade 501 and the fixing bolt 503 are fixedly connected to the rotating rod 14 by the fixing bolt 503. When installing the closing leaf 5, the first blade 501 and the second blade 502 can be placed on the outer wall of the rotating rod 14, and then the first blade 501 and the second blade 502 are fixed to the outer wall of the rotating rod 14 by the fixing bolt 503. This structure facilitates the disassembly and maintenance of the closing leaf 5.

[0027] In this embodiment, the servo motor is a commercially available device known to those skilled in the art. It can be customized or selected according to actual needs. Here, we are only using it without making any structural or functional improvements, and we will not go into details here.

[0028] The working process of this utility model is as follows: First, when closing the industrial fan, the servo motor can drive the rotating rod 14 to rotate. Then, the rotating rod 14 drives the drive shaft 11 and the active connecting rod 12 to rotate. Subsequently, the rotating active connecting rod 12 drives the two transmission bars 9 to move away from each other. Then, the two transmission bars 9 that move away from each other push the multiple driven connecting rods 8 to rotate and drive the connecting shaft 7 and the rotating rod 14 to rotate. Subsequently, the rotating rod 14 drives the closing leaf 5 to rotate, and the rotating closing leaf 5 closes the mounting frame 3.

[0029] When the industrial fan needs to be turned on, the servo motor can directly drive the rotating rod 14 and the drive shaft 11 to rotate in the reverse direction, which will then cause the closing blade 5 to rotate in the reverse direction. The industrial fan can be turned on by the reverse-rotating closing blade 5. This structure can improve the stability of the closing blade 5 when it opens and closes through the compact connection between the various components, and at the same time improve the opening and closing effect of the industrial fan. The above is the working principle of the industrial fan opening and closing adjustment mechanism.

Claims

1. An industrial fan opening and closing adjustment mechanism, including a mounting frame (3), characterized in that: The mounting frame (3) is fixedly welded to both sides with a first fixing frame (1) and a second fixing frame (2). A plurality of first fixing plates (6) are fixedly arranged at equal distances between the first fixing frame (1) and the second fixing frame (2), and the first fixing plates (6) are located on one side of the first fixing frame (1) and the second fixing frame (2). A plurality of rotating rods (14) are rotatably connected inside the mounting frame (3). A closing leaf (5) is connected to the outer wall of the rotating rod (14). One end of the rotating rod (14) rotates through the first fixing plate (6). One end of the first fixed plate (6) is connected to a drive shaft (11). Two drive connecting rods (12) are fixedly installed on the outer wall of the drive shaft (11). A transmission bar (9) is rotatably connected to both ends of the drive connecting rods (12). The other rotating rods (14) are connected to a connecting shaft (7) one end of the first fixed plate (6). A driven connecting rod (8) is fixedly installed on the outer wall of the connecting shaft (7). The two transmission bars (9) are rotatably connected to the multiple driven connecting rods (8) through the connecting rotating shaft (10).

2. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: One end of the rotating rod (14) is connected to a servo motor that adjusts the rotation of the drive shaft (11).

3. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: Several limiting rods (4) are fixedly arranged at equal intervals inside the mounting frame (3), and one limiting rod (4) is distributed on one side of each closed leaf (5).

4. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: The first fixing frame (1) and the second fixing frame (2) are provided with a number of connecting holes (13) at equal intervals on their surfaces.

5. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: A fixing plate (15) is fixedly welded to the outer wall of one end of the mounting frame (3). A connecting hole (13) is provided on the fixing plate (15). Two reinforcing plates (16) are symmetrically arranged between the fixing plate (15) and the outer wall of the mounting frame (3).

6. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: A plurality of second fixing plates (17) are fixedly arranged at equal distances between the first fixing frame (1) and the second fixing frame (2), and the plurality of second fixing plates (17) are located on the other side of the first fixing frame (1) and the second fixing frame (2).

7. The industrial fan opening and closing adjustment mechanism according to claim 1, characterized in that: The closing leaf (5) includes a first blade (501), a second blade (502), and a fixing bolt (503). The first blade (501) and the second blade (502) are located on the outer wall of the rotating rod (14), and the first blade (501) and the fixing bolt (503) are fixedly connected to the rotating rod (14) by the fixing bolt (503).

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