Dustproof device for ventilation of closed cooling tower

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a dustproof device for ventilation of a closed cooling tower, which comprises a cooling tower, a first driving motor and a second driving motor, a ventilation pipeline is mounted on one side of the cooling tower, a mounting plate is mounted on the other side of the cooling tower, the ventilation pipeline is connected with a filter plate, and the filter plate is connected with the first driving motor. A base is fixed to the bottom end of the filter plate, an electromagnetic ring is mounted on the base, a vertical rod is coaxially arranged on the electromagnetic ring, a moving block is mounted on the vertical rod, the bottom end of the moving block is connected with the base through a reset spring, the moving block is connected with a cleaning brush, and a plurality of bearing frames are fixed to the mounting plate; the electromagnetic ring is coaxially provided with the vertical rod, the moving block is installed on the vertical rod, the bottom end of the moving block is connected with the base through the reset spring, the electromagnetic ring is powered on to enable the moving block to ascend under the electromagnetic action, the moving block descends under the action of the reset spring after the electromagnetic ring is powered off, and therefore dust on the filter plate is scraped off.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a dust-proof device for ventilation of a closed cooling tower. Background Art

[0002] Cooling towers are equipment used to dissipate heat from industrial flue gas. Currently, cooling towers are mainly divided into open cooling towers and closed cooling towers. They mainly reduce the temperature of flue gas by spraying water and exchanging heat with heat exchange tubes. The cooling tower has an upward opening for exhausting flue gas. There is basically an exhaust fan at the top of the closed cooling tower. The rotation of the exhaust fan realizes the exchange of hot and cold air flows inside and outside the closed cooling tower to achieve the cooling effect inside the cooling tower.

[0003] According to the Chinese patent publication number "CN218329511U", a patent document entitled "A ventilation and dust prevention device for a closed cooling tower" is disclosed. The device uses dust baffles and dust filter screens to prevent dust. However, when the cooling tower stops running, rainwater and dust impurities will still enter the cooling tower, causing corrosion of the heat exchanger and affecting the normal operation of the cooling tower. During the operation of the cooling tower, a large amount of dust will adhere to the filter plate and is difficult to clean.

[0004] For this reason, we designed a dust prevention device for ventilation of closed cooling tower. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that rainwater and dust fall into the cooling tower and dust on the filter plate is difficult to clean, and proposes a dust-proof device for ventilation of a closed cooling tower.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A dust prevention device for ventilation of a closed cooling tower comprises a cooling tower and a first drive motor and a second drive motor, a ventilation duct is installed on one side of the cooling tower, a mounting plate is installed on the other side of the cooling tower, the ventilation duct is connected to a filter plate, a base is fixed to the bottom end of the filter plate, an electromagnetic ring is installed on the base, a vertical rod is coaxially arranged on the electromagnetic ring, a moving block is installed on the vertical rod, the bottom end of the moving block is connected to the base through a reset spring, the moving block is connected to a cleaning brush, a plurality of bearing frames are fixed on the mounting plate, an output end of the second drive motor is connected to a rotating shaft, the rotating shaft is connected to a first actuating rod and a second actuating rod, and the first actuating rod is connected to the second actuating rod through a corrugated plate.

[0008] Preferably, the return spring is coaxially arranged with the vertical rod, a limit block is installed on the top of the vertical rod, a movable rod is installed on the top of the filter plate, and the movable rod is movably matched with the limit block.

[0009] Preferably, the cleaning brush is always kept parallel to the base, the cleaning brush is attached to the surface of the filter plate, and fixed blocks are rotatably connected on both sides of the filter plate.

[0010] Preferably, a plurality of rectangular notches are provided on the cooling tower, the ventilation duct and the mounting plate are located in the rectangular notches on the cooling tower, and a plurality of circular holes are provided on the filter plate.

[0011] Preferably, the mounting plate comprises a circular ring and a square plate, a "T"-shaped groove is opened on the mounting plate along the circular ring, the first actuating rod always keeps moving in the "T"-shaped groove, and the second actuating rod always keeps stationary in the "T"-shaped groove.

[0012] Preferably, the filter plate is connected to an assembly frame, the assembly frame is connected to an electric fan via a cross frame, the output end of the first drive motor is connected to the electric fan, and the assembly frame is fixed with an insert block.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adopts an electromagnetic ring coaxially arranged with a vertical pole, a moving block is installed on the vertical pole, the bottom end of the moving block is connected to the base through a reset spring, the electromagnetic ring is energized to make the moving block rise under the electromagnetic effect, and the moving block is lowered under the action of the reset spring after power failure, thereby scraping off the dust on the filter plate.

[0015] 2. The utility model adopts a rotating shaft connected with an action rod, and the action rod is connected to the corrugated plate. The corrugated plate is unfolded by the movement of the action rod, so as to prevent rainwater and dust from entering the cooling tower when the cooling tower stops working.

[0016] In summary, the utility model has a reasonable design and can not only play a role in dust and water prevention when the cooling tower is shut down, but also can effectively clean the dust on the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a right view of the overall structure of a dust prevention device for ventilation of a closed cooling tower proposed by the utility model;

[0018] Figure 2 This is a left view of the overall structure of a dust prevention device for ventilation of a closed cooling tower proposed by the utility model;

[0019] Figure 3 A diagram showing the filtration structure of a dust-proof device for ventilation of a closed cooling tower proposed by the utility model;

[0020] Figure 4 A dust-proof structure diagram of a dust-proof device for ventilation of a closed cooling tower proposed by the utility model;

[0021] Figure 5 The utility model discloses a blowing structure relationship diagram of a dust-proof device for ventilation of a closed cooling tower.

[0022] In the figure: 1. cooling tower; 2. first drive motor; 3. second drive motor; 4. ventilation duct; 5. filter plate; 6. base; 7. electromagnetic ring; 8. vertical pole; 9. reset spring; 10. moving block; 11. cleaning brush; 12. limit block; 13. movable rod; 14. fixed block; 15. assembly frame; 16. cross frame; 17. electric fan; 18. plug-in block; 19. mounting plate; 20. rotating shaft; 21. bearing frame; 22. first action rod; 23. second action rod; 24. corrugated plate. DETAILED DESCRIPTION

[0023] Reference Figure 1-Figure 5 A dust prevention device for ventilation of a closed cooling tower includes a cooling tower 1, a first drive motor 2, and a second drive motor 3. A filter plate 5 is connected to an assembly frame 15, and the assembly frame 15 is connected to an electric fan 17 through a cross frame 16. The output end of the first drive motor 2 is connected to the electric fan 17, and the assembly frame 15 is fixed with an insert block 18. By driving the first drive motor 2, the first drive motor 2 drives the electric fan 17 to rotate. The rotation of the electric fan 17 generates wind force, which enters the cooling tower body along the ventilation duct 4, thereby performing ventilation operation of the cooling tower.

[0024] A ventilation duct 4 is installed on one side of the cooling tower 1, and a mounting plate 19 is installed on the other side of the cooling tower 1. The ventilation duct 4 is connected to a filter plate 5. A base 6 is fixed to the bottom end of the filter plate 5. An electromagnetic ring 7 is installed on the base 6. A vertical rod 8 is coaxially arranged on the electromagnetic ring 7. A moving block 10 is installed on the vertical rod 8. The bottom end of the moving block 10 is connected to the base 6 through a reset spring 9. The moving block 10 is connected to a cleaning brush 11. A plurality of bearing frames 21 are fixed on the mounting plate 19. The reset spring 9 is coaxially arranged with the vertical rod 8. A limit block 12 is installed on the top of the vertical rod 8. A movable rod 13 is installed on the top of the filter plate 5. The movable rod 13 and the limit block 12 are movably matched. The cleaning brush 11 always remains parallel to the base 6. The cleaning brush 11 fits the surface of the filter plate 5. Fixed blocks 14 are rotatably connected to both sides of the filter plate 5. A plurality of rectangular notches are opened on the cooling tower 1. The ventilation duct 4 and the mounting plate 19 are located in the rectangular notches on the cooling tower 1. A plurality of circular holes are provided on the filter plate 5, and rectangular grooves are provided at the four corners of the filter plate 5. The plug block 18 on the assembly frame 15 is inserted into the rectangular groove to complete the installation of the assembly frame 15 and the filter plate 5. The wind force generated by the electric fan 17 passes through the circular holes on the filter plate 5. A large amount of dust will be formed on the filter plate 5 after long-term work. The electromagnetic ring 7 is energized manually, and the electromagnetic ring 7 generates a magnetic field. The motion block 10 is made of a special material, so that the motion block 10 reacts with the electromagnetic ring 7. Under the action of the magnetic field, the motion block 10 moves upward along the vertical rod 8. The movement of the motion block 10 drives the cleaning brush 11 to move synchronously. The motion block 10 pulls the reset spring 9 while rising to deform the reset spring 9. After the motion block 10 rises to the top, the electromagnetic ring 7 is powered off. The motion block 10 moves downward under the action of the reset spring 9, and the cleaning brush 11 scrapes off the dust on the filter plate 5 during the reciprocating motion.

[0025] The output end of the second driving motor 3 is connected to a rotating shaft 20, and the rotating shaft 20 is connected to a first acting rod 22 and a second acting rod 23. The first acting rod 22 is connected to the second acting rod 23 through a corrugated plate 24. The mounting plate 19 includes a circular ring and a square plate. A "T"-shaped groove is opened along the circular ring on the mounting plate 19. The first acting rod 22 always keeps moving in the "T"-shaped groove, and the second acting rod 23 always keeps still in the "T"-shaped groove. After the wind enters the cooling tower, it flows out of the cooling tower again through the mounting plate 19, completing the complete ventilation flow of the cooling tower. After the cooling tower stops being used, the second driving motor 3 is driven to drive the rotating shaft 20 to rotate. The rotation of the rotating shaft 20 causes the first action rod 22 to move in the "T"-shaped groove with the rotating shaft 20 as the center. The first action rod 22 pulls the corrugated plate 24 during the movement to unfold the corrugated plate 24 until the first action rod 22 circles around and contacts the second action rod 23 again. At this time, the corrugated plate 24 is fully unfolded, covering the vent of the mounting plate 19 as a whole, effectively preventing rain or dust from entering the cooling tower during the period when the cooling tower is out of use.

[0026] The working principle of the utility model is as follows: a ventilation duct 4 is installed on one side of the cooling tower 1, and a mounting plate 19 is installed on the other side of the cooling tower 1. The ventilation duct 4 is connected to a filter plate 5. A base 6 is fixed to the bottom end of the filter plate 5. An electromagnetic ring 7 is installed on the base 6. The electromagnetic ring 7 is coaxially provided with a vertical rod 8. A moving block 10 is installed on the vertical rod 8. The bottom end of the moving block 10 is connected to the base 6 through a reset spring 9. The moving block 10 is connected to a cleaning brush 11. A plurality of carrier frames 21 are fixed on the mounting plate 19. A rotating shaft 20 is connected to the output end of the second drive motor 3. The rotating shaft 20 is connected to a first action rod 22 and a second action rod 23. The first action rod 22 is connected to the second action rod 23 through a corrugated plate 24. The electromagnetic ring 7 is energized to drive the cleaning brush 11 to reciprocate so as to scrape off the dust on the filter plate 5. The second drive motor 3 drives the corrugated plate 24 to unfold to prevent rainwater and dust from falling into the cooling tower.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust prevention device for ventilation of a closed cooling tower, comprising a cooling tower (1), a first drive motor (2) and a second drive motor (3), characterized in that: A ventilation duct (4) is installed on one side of the cooling tower (1), and a mounting plate (19) is installed on the other side of the cooling tower (1). The ventilation duct (4) is connected to a filter plate (5). A base (6) is fixed at the bottom end of the filter plate (5). An electromagnetic ring (7) is installed on the base (6). A vertical rod (8) is coaxially arranged on the electromagnetic ring (7). A moving block (10) is installed on the vertical rod (8). The bottom end of the moving block (10) is connected to the base (6) via a return spring (9). The moving block (10) is connected to a cleaning brush (11). A plurality of bearing frames (21) are fixed on the mounting plate (19). The output end of the second drive motor (3) is connected to a rotating shaft (20). The rotating shaft (20) is connected to a first action rod (22) and a second action rod (23). The first action rod (22) is connected to the second action rod (23) via a corrugated plate (24).

2. A dust prevention device for ventilation of a closed cooling tower according to claim 1, characterized in that: The return spring (9) is coaxially arranged with the vertical rod (8); a limit block (12) is installed at the top of the vertical rod (8); a movable rod (13) is installed at the top of the filter plate (5); and the movable rod (13) is movably matched with the limit block (12).

3. A dust prevention device for ventilation of a closed cooling tower according to claim 1, characterized in that: The cleaning brush (11) is always kept parallel to the base (6); the cleaning brush (11) is in contact with the surface of the filter plate (5); and fixed blocks (14) are rotatably connected to both sides of the filter plate (5).

4. A dust prevention device for ventilation of a closed cooling tower according to claim 1, characterized in that: The cooling tower (1) is provided with a plurality of rectangular slots, the ventilation duct (4) and the mounting plate (19) are located in the rectangular slots on the cooling tower (1), and the filter plate (5) is provided with a plurality of circular holes.

5. A dust prevention device for ventilation of a closed cooling tower according to claim 1, characterized in that: The mounting plate (19) comprises a circular ring and a square plate. A "T"-shaped groove is provided along the circular ring on the mounting plate (19). The first actuating rod (22) always keeps moving in the "T"-shaped groove, and the second actuating rod (23) always keeps stationary in the "T"-shaped groove.

6. A dust prevention device for ventilation of a closed cooling tower according to claim 1, characterized in that: The filter plate (5) is connected to an assembly frame (15), the assembly frame (15) is connected to an electric fan (17) via a cross frame (16), the output end of the first drive motor (2) is connected to the electric fan (17), and the assembly frame (15) is fixed with an insert block (18).

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