Ventilator outlet baffle gap sealing structure

Abstract

The utility model belongs to the technical field of ventilator baffle adjusting doors, and particularly relates to a ventilator outlet baffle gap sealing structure which comprises a shell, an adjusting fan, a first sealing strip, a second sealing strip and a third sealing strip, the adjusting fan is connected to a rotating shaft, an adjuster is arranged on the rotating shaft, the rotating shaft is rotationally connected to the shell through a rotating bearing, and the first sealing strip and the second sealing strip are arranged in the shell. The first sealing strip and the rotating shaft are arranged on the two sides of the shell in parallel, the second sealing strip is arranged on one side of the air inlet end of the adjusting fan, the third sealing strip is arranged on one side of the air outlet end of the adjusting fan, and the second sealing strip and the third sealing strip are rotationally and symmetrically arranged with the adjusting fan as the center. Compared with the prior art, the baffle adjusting door not only can play a role in adjusting air volume, but also can replace a gate valve to play a role in preventing gas backflow, so that one door has multiple functions, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilator baffle regulating doors, in particular to a ventilator outlet baffle gap sealing structure. Background Art

[0002] The damper door plays a crucial role in regulating air volume throughout the entire piping system. Because it is a welded, non-machined structure, a large gap is required between the blades and the frame to ensure flexible, unobstructed rotation of the blades. This gap creates a certain amount of leakage. When the damper door serves solely as a regulator, there are no sealing requirements. However, in certain operating conditions, the damper door must be used at the fan outlet. Besides regulating air volume, it must also prevent backflow when the damper door is closed, which can cause the rotor to rotate. This creates certain leakage requirements for the fan.

[0003] The current damper regulating door cannot meet the leakage requirements due to the large gap, and a gate valve is usually added to the damper regulating door. Adding a gate valve will increase the cost on the one hand, and on the other hand, the gate valve requires a large space, which is difficult to meet in many cases. This patent provides a sealing strip that can reduce the leakage of the damper, so that the damper regulating door can not only adjust the air volume, but also replace the gate valve to prevent gas backflow. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model develops a ventilation fan outlet baffle gap sealing structure, which can enable the baffle regulating door to not only regulate the air volume, but also replace the plug valve to prevent gas backflow, thereby achieving multiple uses of one door and reducing cost expenditure.

[0005] The technical solution to the technical problem solved by the utility model is: a fan outlet baffle gap sealing structure, including a shell, an adjusting fan, a first sealing strip, a second sealing strip and a third sealing strip, the adjusting fan is connected to a rotating shaft, a regulator is provided on the rotating shaft, the rotating shaft is rotatably connected to the shell through a rotating bearing, the first sealing strip is arranged on both sides of the shell parallel to the rotating shaft, the second sealing strip is arranged on one side of the air inlet end of the adjusting fan, the third sealing strip is arranged on one side of the air outlet end of the adjusting fan, and the second sealing strip and the third sealing strip are rotationally symmetrically arranged around the center of the adjusting fan.

[0006] Preferably, the first sealing strip is U-shaped, including a main body section and a corner section, and the length of the corner section does not exceed half of the difference between the width of the adjustment fan and the diameter of the shaft.

[0007] Preferably, the lengths of the second sealing strip and the third sealing strip do not exceed half of the width of the adjusting fan and are not less than half of the difference between the width of the adjusting fan and the diameter of the rotating shaft.

[0008] Preferably, the regulating fans are arranged in an array on the housing, and two adjacent rotating shafts connected to the regulating fans are connected by a connecting rod.

[0009] Preferably, two adjacent regulating fans overlap each other.

[0010] The effects provided in the content of the utility model are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0011] 1. By providing the first sealing strip, the gaps at both ends of the adjustable sash in the width direction can be sealed;

[0012] 2. By setting the second and third sealing strips, the gaps at both ends of the adjustable fan length direction can be blocked;

[0013] 3. By designing the first sealing strip into a U shape, the corners can be better sealed, thereby improving the sealing effect;

[0014] 4. The length of the second sealing strip and the third sealing strip is designed to be no more than half of the width of the adjusting fan and no less than half of the difference between the width of the adjusting fan and the diameter of the rotating shaft, which can achieve a good sealing effect without hindering the rotation of the adjusting fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of area A in the middle;

[0017] Figure 3 It is a rear view of the utility model;

[0018] Figure 4 for Figure 3 A partial enlarged view of area A in the middle;

[0019] Figure 5 It is a partial cross-sectional view of the left side view of the present utility model;

[0020] Figure 6 for Figure 5 A partial enlarged view of area A in the middle.

[0021] Among them: 1. Shell; 2. Adjusting fan; 3. Rotating bearing; 4. Connecting rod; 5. Regulator; 6. First sealing strip; 61. Main body section; 62. Corner section; 7. Second sealing strip; 8. Third sealing strip; 9. Rotating shaft. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0023] Example 1

[0024] See also Figures 1 to 6 A fan outlet baffle gap sealing structure includes a shell 1, an adjusting fan 2, a first sealing strip 6, a second sealing strip 7 and a third sealing strip 8. The adjusting fan 2 is connected to a rotating shaft 9, on which a regulator 5 is provided. The rotating shaft 9 is rotatably connected to the shell 1 through a rotating bearing 3. The first sealing strip 6 is arranged parallel to the rotating shaft 9 on both sides of the shell 1, the second sealing strip 7 is arranged on one side of the air inlet end of the adjusting fan 2, and the third sealing strip 8 is arranged on one side of the air outlet end of the adjusting fan 2. The second sealing strip 7 and the third sealing strip 8 are rotationally symmetrically arranged with respect to the center of the adjusting fan 2.

[0025] like Figures 1 to 3 As shown, the first sealing strip 6 is U-shaped, including a main body section 61 and a corner section 62 , and the length of the corner section 62 does not exceed half of the difference between the width of the adjustment fan 2 and the diameter of the shaft 9 .

[0026] like Figure 2 、 Figure 4 and Figure 6 As shown, the lengths of the second sealing strip 7 and the third sealing strip 8 do not exceed half of the width of the regulating fan 2 and are not less than half of the difference between the width of the regulating fan 2 and the diameter of the rotating shaft 9 .

[0027] like Figure 1 and Figure 3 As shown, the regulating fans 2 are arranged in an array on the housing 1 , and two adjacent rotating shafts 9 connected to the regulating fans 2 are connected via a connecting rod 4 .

[0028] like Figure 5 and Figure 6 As shown, two adjacent regulating fans 2 overlap each other.

[0029] Principle and operation process

[0030] The present invention mainly realizes the sealing function through the coordinated action of three sealing strips. First, the first sealing strip 6 is arranged on both sides of the shell 1 parallel to the rotating shaft 9. Due to its U-shape, it can fit tightly into the gaps and corners at both ends of the width direction of the regulating fan 2, effectively preventing gas leakage from these parts. Secondly, the second sealing strip 7 and the third sealing strip 8 are arranged rotationally symmetrically with the center of the regulating fan 2, and are respectively located on the air inlet and air outlet sides of the regulating fan 2 to seal the gaps at both ends of the length direction of the regulating fan 2. At the same time, the length of the second sealing strip 7 and the third sealing strip 8 is designed to be no more than half of the width of the regulating fan 2 and no less than half of the difference between the width of the regulating fan 2 and the diameter of the rotating shaft 9, which can ensure a good sealing effect without hindering the rotation of the regulating fan 2, thereby ensuring the normal operation of the ventilator.

[0031] The utility model mainly consists of a shell 1, an adjusting fan 2, a first sealing strip 6, a second sealing strip 7 and a third sealing strip 8. The adjusting fan 2 is connected to the rotating shaft 9, on which a regulator 5 is provided, and the rotating shaft 9 is rotatably connected to the shell 1 through a rotating bearing 3. The first sealing strip 6 is arranged on both sides of the shell 1 in parallel with the rotating shaft 9, and has a U-shaped structure, including a main section 61 and a corner section 62. The length of the corner section 62 does not exceed half of the difference between the width of the adjusting fan 2 and the diameter of the rotating shaft 9, so as to better meet the sealing requirements at the corners. The second sealing strip 7 is arranged on the side of the air inlet end of the adjusting fan 2, and the third sealing strip 8 is arranged on the side of the air outlet end of the adjusting fan 2. The two are rotationally symmetrically distributed around the center of the adjusting fan 2. The first sealing strip 6, the second sealing strip 7 and the third sealing strip 8 are determined according to the rotation direction of the adjusting fan 2 during installation.

[0032] The regulating fans 2 are arranged in an array on the housing 1. Two adjacent rotating shafts 9 connected to the regulating fans 2 are connected by a connecting rod 4, allowing the regulating fans 2 to be adjusted synchronously, improving the convenience and consistency of operation. When the fan is working, the first sealing strip 6, with its U-shaped structure, fits tightly into the gaps and corners at both ends of the width direction of the regulating fan 2, forming the first sealing line of defense; the U-shaped design can better adapt to gaps of different shapes and improve the sealing effect; the second sealing strip 7 and the third sealing strip 8 block the gaps at both ends of the length direction of the regulating fan 2, forming the second sealing line of defense. Its length does not exceed half the width of the regulating fan 2 and is not less than half the difference between the width of the regulating fan 2 and the diameter of the rotating shaft 9. It can effectively prevent gas leakage without hindering the normal rotation of the regulating fan 2. Through the coordinated action of the three sealing strips, the fan outlet baffle gap sealing structure can achieve an efficient and reliable sealing effect, ensuring the stable operation of the fan.

[0033] Although the above describes the specific implementation methods of the present invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the present invention. On the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A fan outlet baffle gap sealing structure, characterized by: The invention comprises a housing (1), an adjusting fan (2), a first sealing strip (6), a second sealing strip (7) and a third sealing strip (8), wherein the adjusting fan (2) is connected to a rotating shaft (9), a regulator (5) is provided on the rotating shaft (9), and the rotating shaft (9) is rotatably connected to the housing (1) via a rotating bearing (3), the first sealing strip (6) is arranged on both sides of the housing (1) in parallel with the rotating shaft (9), and one is arranged on one side of the air inlet end of the adjusting fan (2), and the other is arranged on one side of the air outlet end of the adjusting fan (2), the second sealing strip (7) is arranged on one side of the air inlet end of the adjusting fan (2), and the third sealing strip (8) is arranged on one side of the air outlet end of the adjusting fan (2), and the second sealing strip (7) and the third sealing strip (8) are arranged rotationally symmetrically with respect to the center of the adjusting fan (2).

2. A fan outlet baffle gap sealing structure according to claim 1, characterized in that: The first sealing strip (6) is U-shaped and comprises a main body section (61) and a corner section (62), wherein the length of the corner section (62) does not exceed half the difference between the width of the regulating fan (2) and the diameter of the rotating shaft (9).

3. The fan outlet baffle gap sealing structure according to claim 1, characterized in that: The lengths of the second sealing strip (7) and the third sealing strip (8) do not exceed half the width of the regulating fan (2) and are not less than half the difference between the width of the regulating fan (2) and the diameter of the rotating shaft (9).

4. The fan outlet baffle gap sealing structure according to claim 1, characterized in that: The regulating fans (2) are arranged in an array on the housing (1), and two adjacent rotating shafts (9) connected to the regulating fans (2) are connected via a connecting rod (4).

5. A fan outlet baffle gap sealing structure according to claim 4, characterized in that: Two adjacent regulating fans (2) are overlapped with each other.

Images