Adjustable air door for mechanical ventilation cooling tower

Abstract

The utility model discloses an adjustable air door for a mechanical ventilation cooling tower, which comprises an air door supporting frame, a cross-shaped supporting frame is arranged on the inner side of the air door supporting frame, fan-shaped supporting plates are arranged on the inner sides of the periphery of the cross-shaped supporting frame, air door bodies are arranged on the two sides of the cross-shaped supporting frame, and the fan-shaped supporting plates are arranged on the air door bodies. According to the air door, the air door body is arranged, by means of the air door body of the overall structure, air inducing and adjusting in a louver mode can be avoided, the air door body integrally rotates towards one side by an angle through the supporting rotating shaft and the forward and reverse rotation motor, and therefore the air door body can be conveniently adjusted. According to the principle that the rotating direction of the motor is changed by changing the direction and the magnitude of current, the air door body and an air inlet of the mechanical ventilation cooling tower can form a vertical structure through the supporting rotating shaft and the cross-shaped supporting frame, the air duct section can be increased to conduct the air inducing and adjusting state, and the air face resistance is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling tower accessories, and particularly relates to an adjustable air door for a mechanical draft cooling tower. Background Technique

[0002] A mechanical draft cooling tower is a cooling tower that relies on wind for ventilation. The cooling tower consists of a fan, a tower body, packing, a water collector, louvers, etc. The mechanical draft cooling tower does not have a tall wind chimney. The air flow inside the tower is not generated by the suction force caused by the density difference between the air inside and outside the tower, but by the ventilation fan. The physical properties of air such as temperature and humidity are different in different seasons, and the role played by the heat dissipation method in the water cooling process is also different, and the required air volume is also different.

[0003] During the use of the existing mechanical draft cooling tower, the air inlet generally uses louvers to introduce and adjust the air, which is easy to increase the wind surface resistance and cannot enable the air door to achieve the wind force adjustment effect on the air flow inside the tower. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an adjustable air door for a mechanical draft cooling tower, so as to solve the problem that during the use of the existing mechanical draft cooling tower, the air inlet generally uses louvers to introduce and adjust the air, which is easy to increase the wind surface resistance and cannot enable the air door to achieve the wind force adjustment effect on the air flow inside the tower as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: An adjustable air door for a mechanical draft cooling tower, including an air door support frame, a cross support frame is arranged inside the air door support frame, sector-shaped support plates are arranged on the inner sides of the four sides of the cross support frame, air door bodies are arranged on both sides of the cross support frame, a support rotating shaft is arranged inside the cross support frame, a forward and reverse motor is arranged at one end of the support rotating shaft, a positioning block is arranged at the other end of the support rotating shaft, an installation frame is arranged at the bottom of the air door support frame, installation holes are arranged inside the four sides of the installation frame, and a limit card slot is arranged at one end inside the air door support frame.

[0006] Preferably, installation grooves are arranged on both sides of the middle part inside the air door support frame, positioning blocks are arranged on both sides inside the installation grooves, a storage shaft is arranged in the middle of the installation grooves, return torsion springs are arranged at both ends of the storage shaft, a communication hole is arranged in the middle of the front side of the installation grooves, and a fixing belt is arranged on the outer surface of the storage shaft.

[0007] Preferably, the cross support frame is connected to the inner side of the air damper support frame through a support rotating shaft. The principle of the forward and reverse motor is to change the rotation direction of the motor by changing the direction and magnitude of the current. The forward and reverse motor is electrically rotatably connected to one end of the support rotating shaft through contact fixation on the outer side of the air damper support frame. The limit card slot is fixedly connected to the inner end of the air damper support frame in an embedded manner. The positioning block is in contact with the inner part of the limit card slot in a limiting manner. The other end of the support rotating shaft is fixedly connected to the positioning block in a clamping manner.

[0008] Preferably, there are four fan-shaped support plates. All four fan-shaped support plates are fixedly in contact with the inner sides around the cross support frame. There are two air damper bodies. Both air damper bodies are of an integral structure. Both air damper bodies are fixedly in contact with the two sides of the cross support frame and the two sides of the fan-shaped support plates.

[0009] Preferably, the installation frame is fixedly in contact with the bottom of the air damper support frame. The interiors around the installation frame are all connected to the installation holes in a communicating manner.

[0010] Preferably, there are two installation grooves. Both installation grooves are fixedly connected to the two sides in the middle of the inner side of the air damper support frame. Both sides inside the two installation grooves are fixedly in contact with the positioning blocks.

[0011] Preferably, there are two receiving shafts. Both ends of the two receiving shafts are in positioning contact with the inner surface of the positioning block through a return torsion spring. Both receiving shafts are suspended and supported in the installation grooves through the return torsion spring and the positioning block.

[0012] Preferably, there are two communicating holes and fixing belts. Both communicating holes are in an embedded and communicating connection with the middle part of the front side of the installation groove. The outer sides of the receiving shafts are in rotational receiving contact with the fixing belts. The outer ends of the two fixing belts are fixedly in contact with the two sides outside the cross support frame.

[0013] Compared with the prior art, the present utility model provides an adjustable air damper for a mechanical ventilation cooling tower, which has the following beneficial effects:

[0014] 1. By providing the air damper body in the present utility model, with the air damper body of the integral structure, it is possible to avoid the form of louver for air guiding and air adjustment. The air damper body is rotated as a whole to one side through the support rotating shaft and the forward and reverse motor. Using the forward and reverse motor based on the principle of changing the rotation direction of the motor by changing the direction and magnitude of the current, through the support rotating shaft and the cross support frame, the air damper body can form a vertical structure with the air inlet of the mechanical ventilation cooling tower, which can increase the cross-sectional area of the air duct to carry out the air guiding and air adjustment state, and reduce the wind surface resistance.

[0015] 2. By arranging a reset torsion spring, the present utility model can keep the storage shaft in the same state for a long time. When the fixing belt on the surface of the storage shaft deviates with the angle of the cross support frame and the length of the fixing belt is extended, when the positive and negative rotation motor is turned off later, the reset torsion spring is used to rotate the storage shaft back to the previous state, achieving the storage of the fixing belt on the surface of the storage shaft, and realizing the center stability of both sides of the cross support frame pulled by the support rotating shaft, and the air damper at the air inlet of the mechanical ventilation cooling tower can be closed.

[0016] 3. By arranging an installation frame and installation holes, the present utility model can support and fix the air damper support frame of the adjustable air damper for the mechanical ventilation cooling tower above the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model;

[0019] Figure 2 is a perspective view of the structure of the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model;

[0020] Figure 3 is the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model Figure 2 an enlarged view of part A;

[0021] Figure 4 is a sectional view of the structure of the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model;

[0022] Figure 5 is a schematic structural diagram of the adjustable air damper for the mechanical ventilation cooling tower from another angle proposed by the present utility model;

[0023] Figure 6 is a schematic structural diagram of the air damper main body of the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model;

[0024] Figure 7 is a sectional view of the top surface of the adjustable air damper for the mechanical ventilation cooling tower proposed by the present utility model;

[0025] In the figure: 1. Damper support frame; 2. Reversible motor; 3. Installation frame; 4. Installation hole; 5. Cross support frame; 6. Sector-shaped support plate; 7. Damper body; 8. Support rotating shaft; 9. Installation groove; 10. Storage shaft; 11. Return torsion spring; 12. Positioning block; 13. Communication hole; 14. Fixing belt; 15. Limit card slot; 16. Positioning card block. Detailed implementation manner

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figure 1-7 , the present invention provides a technical solution: an adjustable damper for a mechanical ventilation cooling tower, including a damper support frame 1. A cross support frame 5 is arranged inside the damper support frame 1. Sector-shaped support plates 6 are arranged on the inner sides of the four sides of the cross support frame 5. Damper bodies 7 are arranged on both sides of the cross support frame 5. By providing the damper bodies 7, the damper bodies 7 with the overall structure can be used to avoid the form of louver for air intake and air regulation. A support rotating shaft 8 is arranged inside the cross support frame 5. One end of the support rotating shaft 8 is provided with a reversible motor 2. By providing the reversible motor 2, the reversible motor 2 based on the principle of changing the rotation direction of the motor by changing the direction and magnitude of the current rotates the damper body 7 as a whole to one side by a certain angle through the support rotating shaft 8 and the reversible motor 2, so that the damper body 7 forms a vertical structure with the air inlet of the mechanical ventilation cooling tower, which can increase the cross-sectional area of the air duct to carry out the air intake and air regulation state, and reduce the air surface resistance. A positioning card block 16 is arranged at the other end of the support rotating shaft 8. An installation frame 3 is arranged at the bottom of the damper support frame 1. Installation holes 4 are arranged inside the four sides of the installation frame 3. By providing the installation frame 3 and the installation holes 4, the damper support frame 1 of the adjustable damper for the mechanical ventilation cooling tower can be supported and fixed above the air inlet. A limit card slot 15 is arranged at one end inside the damper support frame 1.

[0028] In the present utility model, preferably, mounting grooves 9 are provided on both sides of the middle part inside the air damper support frame 1. Positioning blocks 12 are provided on both sides inside the mounting grooves 9, and a receiving shaft 10 is provided in the middle part inside the mounting grooves 9. Reset torsion springs 11 are provided at both ends of the receiving shaft 10. By providing the reset torsion springs 11, the receiving shaft 10 can be rotated to return to the previous state, achieving the receiving of the fixing belt 14 on the surface of the receiving shaft 10, realizing the pulling of both sides of the cross support frame 5 to maintain the center stability by the support rotating shaft 8, and closing the air damper at the air inlet of the mechanical ventilation cooling tower. A communication hole 13 is provided in the middle part of the front side of the mounting groove 9, and a fixing belt 14 is provided on the outer surface of the receiving shaft 10.

[0029] In the present utility model, preferably, the cross support frame 5 is connected to the inner side of the air damper support frame 1 in a limited support manner through the support rotating shaft 8. The principle of the forward and reverse motor 2 is to change the rotation direction of the motor by changing the direction and magnitude of the current. The forward and reverse motor 2 is electrically rotationally connected to one end of the support rotating shaft 8 through contact fixation on the outer side of the air damper support frame 1. The limit card slot 15 is fixedly connected to the inner end of the air damper support frame 1 in an embedded manner. The positioning block 16 is in limited contact connection with the inside of the limit card slot 15. The other end of the support rotating shaft 8 is fixedly connected to the positioning block 16 in a clamping manner. By providing the forward and reverse motor 2, with the forward and reverse motor 2 based on the principle of changing the rotation direction of the motor by changing the direction and magnitude of the current, the air damper body 7 is rotated as a whole by a certain angle to one side through the support rotating shaft 8 and the forward and reverse motor 2, so that the air damper body 7 forms a vertical structure with the air inlet of the mechanical ventilation cooling tower, which can increase the cross-sectional area of the air duct to adjust the air intake state and reduce the wind surface resistance.

[0030] In the present utility model, preferably, four sector-shaped support plates 6 are provided, and all four sector-shaped support plates 6 are fixedly in contact with the inner sides of the four sides of the cross support frame 5. Two air damper bodies 7 are provided, and both two air damper bodies 7 are of an integral structure. Both two air damper bodies 7 are fixedly in contact with both sides of the cross support frame 5 and both sides of the sector-shaped support plates 6. By providing the air damper body 7, with the air damper body 7 of an integral structure, the form of louver for air intake adjustment can be avoided.

[0031] In the present utility model, preferably, the mounting frame 3 is fixedly in contact with the bottom of the air damper support frame 1. The inside of the four sides of the mounting frame 3 is communicated with the mounting holes 4. By providing the mounting frame 3 and the mounting holes 4, the air damper support frame 1 of the adjustable air damper for the mechanical ventilation cooling tower can be supported and fixed above the air inlet.

[0032] In the present utility model, preferably, two mounting grooves 9 are provided, and both two mounting grooves 9 are fixedly connected to both sides of the middle part inside the air damper support frame 1. Both sides inside both two mounting grooves 9 are fixedly in contact with the positioning blocks 12.

[0033] In the present utility model, preferably, there are two storage shafts 10. Both ends of the two storage shafts 10 are positioned and contact-connected to the inner surface of the positioning block 12 through a return torsion spring 11. The two storage shafts 10 are both suspended and supported inside the installation groove 9 through the return torsion spring 11 and the positioning block 12. By providing the return torsion spring 11, the storage shaft 10 can be rotated back to the previous state, achieving the storage of the fixing belt 14 on the surface of the storage shaft 10, and realizing that both sides of the cross support frame 5 are pulled to maintain central stability by the support rotating shaft 8, and the air damper at the air inlet of the mechanical ventilation cooling tower can be closed.

[0034] In the present utility model, preferably, there are two communication holes 13 and fixing belts 14. Both of the two communication holes 13 are fitted and connected to the middle part of the front side of the installation groove 9. The outer sides of the storage shafts 10 are all rotationally stored and contact-connected to the fixing belts 14. The outer ends of the two fixing belts 14 are both fixedly contacted and connected to the outer sides of both parts of the cross support frame 5.

[0035] The working principle and usage process of the present utility model: When in use, start the forward and reverse motor 2, which can rotate the air damper body 7 as a whole to one side by a certain angle through the support rotating shaft 8 and the forward and reverse motor 2. The forward and reverse motor 2, based on the principle of changing the rotation direction of the motor by changing the direction and magnitude of the current, can make the air damper body 7 form a vertical structure with the air inlet of the mechanical ventilation cooling tower through the support rotating shaft 8 and the cross support frame 5. By using the air damper body 7 of the overall structure, the form of louver for air intake and air regulation can be avoided, the air duct cross-section can be increased for the state of air intake and air regulation, and the air surface resistance can be reduced. When the forward and reverse motor 2 is turned off later, through the provided return torsion spring 11, the storage shaft 10 can be maintained in the same state for a long time. When the fixing belt 14 on the surface of the storage shaft 10 is offset with the change of the angle of the cross support frame 5 and the length of the fixing belt 14 is extended, the return torsion spring 11 is used to rotate the storage shaft 10 back to the previous state, achieving the storage of the fixing belt 14 on the surface of the storage shaft 10, and realizing that both sides of the cross support frame 5 are pulled to maintain central stability by the support rotating shaft 8, and the air damper at the air inlet of the mechanical ventilation cooling tower can be closed. Through the provided installation frame 3 and installation holes 4, the air damper support frame 1 of the mechanical ventilation cooling tower can be supported and fixed above the air inlet.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable damper for a mechanical ventilation cooling tower, comprising a damper support frame (1), characterized in that: A cross support frame (5) is arranged inside the damper support frame (1), and fan-shaped support plates (6) are arranged inside the four sides of the cross support frame (5). A damper body (7) is arranged on both sides of the cross support frame (5). A support shaft (8) is arranged inside the cross support frame (5), and a forward and reverse motor (2) is arranged at one end of the support shaft (8), and a positioning block (16) is arranged at the other end of the support shaft (8). A mounting frame (3) is arranged at the bottom of the damper support frame (1), and mounting holes (4) are arranged inside the four sides of the mounting frame (3). A limiting slot (15) is arranged at one end of the damper support frame (1).

2. The adjustable damper for a mechanical ventilation cooling tower according to claim 1, characterized in that: The damper support frame (1) is provided with mounting grooves (9) on both sides of the inner middle part, positioning blocks (12) are provided on both sides of the inner part of the mounting groove (9), a storage shaft (10) is provided in the inner middle part of the mounting groove (9), return torsion springs (11) are provided at both ends of the storage shaft (10), a connecting hole (13) is provided in the middle part of the front side of the mounting groove (9), and a fixing belt (14) is provided on the outer surface of the storage shaft (10).

3. The adjustable damper for a mechanical ventilation cooling tower according to claim 1, characterized in that: The cross support frame (5) is connected to the inner limit support of the damper support frame (1) through the support shaft (8); the forward and reverse motor (2) works on the principle of changing the direction of rotation of the motor by changing the direction and magnitude of the current; the forward and reverse motor (2) is electrically rotatably connected to one end of the support shaft (8) through the outer contact fixation of the damper support frame (1); the limit slot (15) is fixedly engaged with one end inside the damper support frame (1); the positioning block (16) is contacted with the inner limit of the limit slot (15); and the other end of the support shaft (8) is fixedly engaged with the positioning block (16).

4. The adjustable damper for a mechanical ventilation cooling tower according to claim 1, characterized in that: Four fan-shaped support plates (6) are provided, and the four fan-shaped support plates (6) are all fixedly contacted and connected with the inner sides of the cross support frame (5). Two damper bodies (7) are provided, and the two damper bodies (7) are integral structures. The two damper bodies (7) are both fixedly contacted and connected with the two sides of the cross support frame (5) and the two side surfaces of the fan-shaped support plates (6).

5. The adjustable damper for a mechanical ventilation cooling tower according to claim 1, characterized in that: The installation frame (3) is fixedly contacted and connected to the bottom of the damper support frame (1), and the interior of the installation frame (3) is connected to the installation hole (4) all around.

6. The adjustable damper for a mechanical ventilation cooling tower according to claim 2, characterized in that: Two mounting grooves (9) are provided, and both mounting grooves (9) are fixedly connected to both sides of the middle part of the inner side of the damper support frame (1), and both sides inside the two mounting grooves (9) are fixedly contacted and connected to the positioning block (12).

7. The adjustable damper for a mechanical ventilation cooling tower according to claim 2, characterized in that: Two storage shafts (10) are provided, and both ends of the two storage shafts (10) are connected by positioning contact with the inner surface of the return torsion spring (11) and the positioning block (12), and the two storage shafts (10) are connected to the internal suspended support of the installation groove (9) through the return torsion spring (11) and the positioning block (12).

8. The adjustable damper for a mechanical ventilation cooling tower according to claim 2, characterized in that: The communicating holes (13) and the fixing belts (14) are provided with two, the two communicating holes (13) are both connected and engaged with the middle part of the front side of the mounting groove (9), the outer sides of the storage shaft (10) are both connected and contacted with the fixing belts (14) for rotation and storage, and the outer ends of the two fixing belts (14) are both connected and contacted with the two sides of the outside of the cross support frame (5).

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