Cooling tower with added air inlet and outlet sound absorbers and method for cleaning the fill of the cooling tower

Abstract

The application discloses a cooling tower with sound absorber installed at air inlet and outlet for noise reduction and a packing flushing method thereof, and belongs to the technical field of water circulation cooling. The cooling tower comprises a cooling tower body, an air extractor and a packing module. The packing module is located in the cooling tower body. The air extractor is arranged at an air outlet on the top of the cooling tower body. An air inlet is arranged on the side wall of the cooling tower body. Sound absorbers are arranged at the air inlet and the air outlet. The sound absorbers arranged at the air inlet and the air outlet of the cooling tower body greatly improve the sound reduction effect. The packing module in the application is a packing gap adjustable packing module. The packing gap adjustable packing module can adjust the packing gap in real time to adapt to the problems of large water circulation flow or large water cooling temperature difference during the cooling process. Especially, the packing gap function of the packing gap adjustable packing module is combined with the circulating cleaning of the application, so that the dirt between the packings can be effectively removed, the problems of long time consumption and large labor amount caused by replacement of the packings due to the packing blockage are solved, and the application has the characteristics of convenient and fast packing cleaning.

Description

Technical Field

[0001] This invention relates to the field of water circulation cooling technology, specifically a noise-reducing cooling tower. Background Technology

[0002] The existing cooling tower includes a cooling tower body, an exhaust system, a spray system, packing material, and a water storage tank. The exhaust system is located at the top of the cooling tower body, and the spray system is located below the exhaust system. The spray system includes horizontally arranged spray pipes and several nozzles on the spray pipes. The packing material is located inside the cooling tower and below the spray system. The water storage tank is located inside the cooling tower and below the packing material. In operation, cooling water from the central air conditioning system flows into the spray pipes and is sprayed downwards through the nozzles onto the packing material. At this time, the cooling water flowing through the packing material exchanges heat with the cold air flowing through it and, after cooling, flows into the water storage tank, and then back into the central air conditioning system.

[0003] Existing cooling towers have the following shortcomings: First, the gas entering the cooling tower often contains solid impurities. When the airflow passes over the uneven surface of the impurities, it will cause turbulence and other abnormal flows, resulting in additional noise and pollution of the surrounding environment. Second, when the packing material inside the cooling tower becomes clogged, the packing material is often replaced, which is time-consuming and labor-intensive. Third, the gap between the packing material is fixed and cannot adapt to changes in water flow and water temperature, thus affecting the cooling efficiency of the cooling tower. Summary of the Invention

[0004] The purpose of this invention is to provide a noise reduction cooling tower equipped with inlet and outlet silencers, which has the function of noise reduction.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A noise reduction cooling tower with inlet and outlet silencers includes a cooling tower body, an exhaust fan, and a packing module. The packing module is located inside the cooling tower body. The exhaust fan is located at the air outlet at the top of the cooling tower body. An air inlet is provided on the side wall of the cooling tower body. Silencers are provided at the air inlet and air outlet. The packing module is an adjustable packing module.

[0007] Furthermore, the adjustable packing gap packing module includes a fixed frame, a packing plate, a rotating shaft, a swing arm, a drive shaft, a packing gap adjusting plate, and a gap adjusting electric push rod. The fixed frame is fixed to the inner wall of the cooling tower body. The upper surface of the fixed frame has hanging grooves distributed at intervals. The upper end of the packing plate is fixed to the rotating shaft, and the lower end of the packing plate is a free end. One end of the rotating shaft is located in the hanging groove on the rear side of the fixed frame. The other end of the rotating shaft extends from the hanging groove on the rear side of the fixed frame to the outside of the fixed frame and is connected to one end of the swing arm. The other end of the swing arm is connected to one end of the drive shaft. The other end of the drive shaft extends into the elongated hole of the packing gap adjusting plate. The gap adjusting electric push rod is connected to the packing gap adjusting plate. The gap adjusting electric push rod pushes the packing gap adjusting plate. The packing gap adjusting plate drives the swing arm through the drive shaft. The swing arm drives the rotating shaft. The rotating shaft drives the packing plate to rotate, thereby adjusting the gap between adjacent packing plates.

[0008] Furthermore, a baffle plate is provided above the gap adjusting electric push rod, which seals the gap between the fixing frame and the cooling tower body to prevent water from flowing onto the gap adjusting electric push rod.

[0009] Furthermore, a noise reduction cooling tower equipped with inlet and outlet silencers also includes a spray assembly and a water collection tank. The spray assembly is located inside the cooling tower body, above the packing module, and the water collection tank is located inside the cooling tower body and below the packing module. The air inlet is located between the packing module and the water collection tank.

[0010] Furthermore, it also includes a variable frequency circulating pump and a water circulation pipeline. One end of the water circulation pipeline extends into the cooling tower body and is connected to the spray assembly. The other end of the water circulation pipeline is connected to the bottom side of the water collection tank. The variable frequency circulating pump is installed on the water circulation pipeline, and the water in the water circulation pipeline is used to remove heat from the heating equipment.

[0011] Furthermore, the adjustable packing gap packing module also includes a flow sensor and a controller. The flow sensor is installed on the water circulation pipeline and near the spray assembly. The flow sensor transmits the water flow information in the water circulation pipeline to the controller. When the water flow decreases, the controller activates the gap adjustment electric push rod to reduce the gap between adjacent packing plates; when the water flow increases, the controller activates the gap adjustment electric push rod to increase the gap between adjacent packing plates.

[0012] Furthermore, the adjustable packing gap packing module also includes a water temperature sensor, which is installed on the water circulation pipeline and close to the spray assembly. The water temperature sensor transmits the water temperature information in the water circulation pipeline to the controller. When the water temperature is lower than the set value, the controller activates the gap adjustment electric push rod to increase the gap between adjacent packing plates; when the water temperature is higher than the set value, the controller activates the gap adjustment electric push rod to decrease the gap between adjacent packing plates.

[0013] Furthermore, in the adjustable packing gap packing module, the fixed frame is provided with two vertical partitions, and the two or more vertical partitions divide the fixed frame into three cavities. The rotating shaft has three packing plates, and the three packing plates are respectively located in the corresponding three cavities.

[0014] Furthermore, the spray assembly includes a water distribution tank, on the bottom surface of which are three spray groups, each located above a cavity in a corresponding fixed frame. Each spray group consists of multiple spray heads arranged in multiple rows and columns. The spray heads are connected to the bottom surface of the water distribution tank via solenoid valves. The water distribution tank is fixed to a crossbeam inside the cooling tower. Below the adjustable packing module, there is a water collection funnel. The drain port at the bottom of the water collection funnel is connected to the upper port of a four-way valve. The lower port of the four-way valve is connected to a filter. The left and right ports of the four-way valve are air inlets.

[0015] Furthermore, a method for flushing the packing of a noise-reducing cooling tower equipped with inlet and outlet silencers includes the following steps:

[0016] S1. In one of the three spray groups, open the solenoid valves on the three rows of spray heads in one spray group, and close the other solenoid valves;

[0017] S2. Turn off the exhaust fan, open the four-way valve to connect the upper and lower ports of the four-way valve, and disconnect the left and right ports of the four-way valve;

[0018] S3. Activate the electric push rod for adjusting the gap in the adjustable packing module to adjust the gap between adjacent packing plates to the maximum.

[0019] S4. Turn on the variable frequency circulating pump. Water from the collection tank enters the water distribution tank of the spray assembly through the water circulation pipeline. The high-pressure water formed in the distribution tank is sprayed downwards through two rows of spray heads in the spray assembly to clean the packing plate in a cavity of the fixed frame below the three rows of spray heads. After cleaning, close the solenoid valves on the three rows of spray heads, and simultaneously open the solenoid valves on the adjacent three rows of spray heads in the spray assembly to clean the packing plate. Repeat this process until the packing plate in a cavity of the fixed frame is cleaned by the three rows of spray heads. After cleaning the packing plate, open the solenoid valves on the three adjacent rows of spray heads in the spray assembly. After the solenoid valves on all the spray heads have completed the overall flushing of the packing plate in one cavity of the fixed frame, the solenoid valves of that spray group are closed. The second spray group is started and cleaned in the same way. After the second spray group is cleaned, the third spray group is started and cleaned in the same way until the cleaning of the adjustable packing module is completed. During the cleaning process, the sewage flowing out of the adjustable packing module flows downward and is collected in the water collection funnel. The sewage in the water collection funnel is filtered by the filter and falls downward into the water collection tank.

[0020] S5. After cleaning is complete, turn off the variable frequency circulation pump;

[0021] S6. Close the four-way valve, disconnecting the upper and lower ports of the four-way valve, and connecting the upper port of the four-way valve with the left and right ports of the four-way valve.

[0022] The beneficial effects of this invention are as follows:

[0023] The present invention is equipped with silencers at both the air inlet and air outlet of the cooling tower, which greatly improves the noise reduction effect.

[0024] The packing module in this invention adopts an adjustable packing gap module, which allows the cooling tower to adjust the packing gap in real time to adapt to problems such as large water circulation flow or large temperature difference between water and cooling water during the cooling process. In particular, the packing gap function of the adjustable packing gap module combined with the circulation cleaning of this invention can effectively remove dirt between the packings, solving the problem of time-consuming and labor-intensive packing replacement caused by packing blockage. It has the characteristics of convenient and quick packing cleaning.

[0025] This invention divides the fixing frame of the adjustable packing module into three cavities, in which packing plates are suspended, laying the foundation for segmented cleaning. Segmented cleaning allows for more concentrated water flow, thus enhancing the cleaning effect. The spray heads on the bottom surface of the water distribution tank are grouped, and the three rows of spray heads are combined into a single cleaning spray unit. This increases the water pressure, resulting in high-pressure water sprayed from the spray heads with strong impact, thereby improving the cleaning effect. The cleaning unit of this invention utilizes the existing water circulation pipeline and variable frequency circulation pump, eliminating the need for additional cleaning components. This simplifies the overall structure of the cooling tower, reducing costs and facilitating future maintenance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 for Figure 1 The diagram shows the structure of the filler module.

[0028] Figure 3 for Figure 2 The top view shown;

[0029] Figure 4 for Figure 3 An enlarged view of point A shown;

[0030] Figure 5 for Figure 4 The assembly diagram shown is of the packing gap adjusting plate, drive shaft, and electric push rod for gap adjustment.

[0031] Figure 6 for Figure 1 The diagram shows the structure of the spray assembly.

[0032] Figure 7 for Figure 6 The top view shown.

[0033] In the diagram: 1. Cooling tower body; 2. Exhaust fan; 3. Packing module; 4. Spray assembly; 5. Water collection tank; 6. Air inlet; 7. Variable frequency circulating pump; 8. Water circulation pipeline; 9. Heating equipment; 10. Anti-white smoke and defogging module; 11. Fixing frame; 12. Packing plate; 13. Hanging groove; 14. Rotating shaft; 15. Baffle plate; 16. Vertical partition plate; 17. Swing arm; 18. Drive shaft; 19. Packing gap adjustment plate; 20. Gap adjustment electric push rod; 21. Elongated hole; 22. Flow sensor; 23. Controller; 24. Water temperature sensor; 25. Water distribution tank; 26. Spray assembly; 27. Spray head; 28. Solenoid valve; 29. ​​Crossbeam; 30. Water collection funnel; 31. Drain port; 32. Four-way valve; 33. Left port; 34. Right port; 35. Filter; 36. Three rows of spray heads. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper surface," "lower surface," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "forward," "reverse," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] like Figure 1 As shown, a noise reduction cooling tower equipped with inlet and outlet silencers includes a cooling tower body 1, an exhaust fan 2, a packing module 3, a spray assembly 4, and a water collection tank 5. The exhaust fan 2 is located at the air outlet at the top of the cooling tower body 1. The packing module 3 and the spray assembly 4 are located inside the cooling tower body 1, with the spray assembly 4 positioned above the packing module 3. The water collection tank 5 is located inside the cooling tower body 1 and below the packing module 3. An air inlet 6 is provided on the side wall of the cooling tower body 1, located between the packing module 3 and the water collection tank 5. The tower also includes a variable frequency circulating pump 7 and a water circulation pipe 8. One end of the water circulation pipe 8 extends into the cooling tower body 1 and connects to the spray assembly 4. The other end of the water circulation pipe 8 communicates with the bottom side of the water collection tank 5. The variable frequency circulating pump 7 is mounted on the water circulation pipe 8, and the water in the water circulation pipe 8 is used to remove heat from the heating device 9. Silencers 10 are provided at the air inlet 6 and the air outlet.

[0037] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the packing module 3 is an adjustable packing module. The adjustable packing module allows the cooling tower to adjust the packing gap in real time to adapt to problems such as large water circulation flow or large temperature differences between the cooling water and the water during the cooling process.

[0038] The adjustable packing module includes a fixed frame 11, a packing plate 12, a rotating shaft 14, a swing arm 17, a drive shaft 18, a packing gap adjusting plate 19, and a gap adjusting electric push rod 20. The fixed frame is fixed to the inner wall of the cooling tower body. The upper surface of the fixed frame 11 has hanging grooves 13 spaced apart. The upper end of the packing plate 12 is fixed to the rotating shaft 14, and the lower end of the packing plate 12 is a free end. One end of the rotating shaft 14 is located in the hanging groove 13 on the front side of the fixed frame 11, and the other end of the rotating shaft 14 extends from the hanging groove 13 on the rear side of the fixed frame 11. One end of the swing arm 17 extends out of the fixed frame 11 and connects to the other end of the drive shaft 18. The other end of the drive shaft 18 extends into the elongated hole 21 of the packing gap adjusting plate 19. The gap adjusting electric push rod 20 is connected to one end of the packing gap adjusting plate 19. The gap adjusting electric push rod 20 pushes the packing gap adjusting plate 19, and the packing gap adjusting plate 19 drives the swing arm 17 through the drive shaft 18. The swing arm 17 drives the rotating shaft 14, and the rotating shaft 14 drives the packing plate 12 to rotate, thereby adjusting the gap between adjacent packing plates 12. A baffle plate 15 is provided above the gap adjusting electric push rod 20, and the baffle plate 15 seals the gap between the fixed frame 11 and the cooling tower body 1. Two vertical partitions 16 are provided inside the fixed frame 11, which divide the fixed frame into three cavities. There are three packing plates 12 on the rotating shaft 14, and the three packing plates 12 are respectively located in the three corresponding cavities.

[0039] The adjustable packing module further includes a flow sensor 22, a controller 23, and a water temperature sensor 24. The flow sensor 22 is installed on the water circulation pipe 8 near the spray assembly 4. The flow sensor 22 transmits water flow information from the water circulation pipe 8 to the controller 23. When the water flow decreases, the controller 23 activates the gap adjustment electric actuator 20 to reduce the gap between adjacent packing plates; when the water flow increases, the controller 23 activates the gap adjustment electric actuator 20 to increase the gap between adjacent packing plates. The water temperature sensor 24 is installed on the water circulation pipe 8 near the spray assembly 4. The water temperature sensor 24 transmits water temperature information from the water circulation pipe 8 to the controller 23. When the water temperature is lower than a set value, the controller 23 activates the gap adjustment electric actuator 20 to increase the gap between adjacent packing plates; when the water temperature is higher than the set value, the controller 23 activates the gap adjustment electric actuator 20 to decrease the gap between adjacent packing plates. It should be noted that water flow information is the primary factor, with water temperature information as a secondary factor. When the water flow information remains relatively constant, the gap between adjacent packing plates is adjusted based on the water temperature information. If the water flow information changes significantly, the water flow information should be used as the primary factor, and the water temperature information should not be considered.

[0040] like Figure 6 , Figure 7As shown, the spray assembly 4 includes a water distribution tank 25. Three spray groups 26 are arranged on the bottom surface of the water distribution tank 25, each located above a corresponding cavity in the fixed frame 11. Each spray group 26 consists of multiple spray heads 27 arranged in multiple rows and columns. Three rows of spray heads 36 in each spray group 26 constitute a cleaning spray unit. The spray heads 27 are connected to the bottom surface of the water distribution tank 25 via a solenoid valve 28. The water distribution tank 25 is fixed to a crossbeam 29 inside the cooling tower body 1. A water collection funnel 30 is located below the adjustable packing module. The drain port 31 at the bottom of the water collection funnel 30 is connected to the upper port of a four-way valve 32. The lower port of the four-way valve 32 is connected to a filter 35. The left port 33 and right port 34 of the four-way valve 32 are air inlets.

[0041] The fixed frame 11 is divided into three cavities, and the packing plate is suspended in the three cavities, which lays the foundation for segmented cleaning. Segmented cleaning can concentrate the water flow and increase the cleaning effect. The spray heads 27 on the bottom surface of the water distribution tank 25 are grouped, and the three rows of spray heads 36 are used as a cleaning spray unit. This can increase the water pressure. The high-pressure water sprayed from the spray heads has a strong impact force, which can improve the cleaning effect. The cleaning unit of this invention uses the original water circulation pipeline and variable frequency circulation pump, and there is no need to set up additional cleaning components. This makes the overall structure of the cooling tower simpler, which not only reduces costs, but also facilitates later maintenance.

[0042] A method for flushing the packing of a noise-reducing cooling tower equipped with inlet and outlet silencers includes the following steps:

[0043] S1. In one of the three spray groups, open the solenoid valves on the three rows of spray heads in one spray group, and close the other solenoid valves;

[0044] S2. Turn off the exhaust fan, open the four-way valve to connect the upper and lower ports of the four-way valve, and disconnect the left and right ports of the four-way valve;

[0045] S3. Activate the electric push rod for adjusting the gap in the adjustable packing module to adjust the gap between adjacent packing plates to the maximum.

[0046] S4. Turn on the variable frequency circulating pump. Water from the collection tank enters the water distribution tank of the spray assembly through the water circulation pipeline. The high-pressure water formed in the distribution tank is sprayed downwards through two rows of spray heads in the spray assembly to clean the packing plate in a cavity of the fixed frame below the three rows of spray heads. After cleaning, close the solenoid valves on the three rows of spray heads, and simultaneously open the solenoid valves on the adjacent three rows of spray heads in the spray assembly to clean the packing plate. Repeat this process until the packing plate in a cavity of the fixed frame is cleaned by the three rows of spray heads. After cleaning the packing plate, open the solenoid valves on the three adjacent rows of spray heads in the spray assembly. After the solenoid valves on all the spray heads have completed the overall flushing of the packing plate in one cavity of the fixed frame, the solenoid valves of that spray group are closed. The second spray group is started and cleaned in the same way. After the second spray group is cleaned, the third spray group is started and cleaned in the same way until the cleaning of the adjustable packing module is completed. During the cleaning process, the sewage flowing out of the adjustable packing module flows downward and is collected in the water collection funnel. The sewage in the water collection funnel is filtered by the filter and falls downward into the water collection tank.

[0047] S5. After cleaning is complete, turn off the variable frequency circulation pump;

[0048] S6. Close the four-way valve, disconnecting the upper and lower ports of the four-way valve, and connecting the upper port of the four-way valve with the left and right ports of the four-way valve.

[0049] In the above packing flushing method, the gap between adjacent packing plates should be adjusted to the maximum first, so that the dirt on the packing plates can be cleaned.

[0050] Working Principle: This invention incorporates silencers at both the air inlet and outlet of the cooling tower, significantly improving noise reduction efficiency. In particular, the packing module employs an adjustable packing gap design, allowing the cooling tower to adjust the packing gap in real time to accommodate situations with large water circulation flow rates or significant temperature differences between the cooling water and the water during cooling. Furthermore, the adjustable packing gap function, combined with the circulating cleaning mechanism of this invention, effectively removes contaminants from the packing, solving the problem of time-consuming and labor-intensive packing replacements due to blockage. This provides convenient and quick packing cleaning.

[0051] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those embodiments or examples, without contradiction. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A noise reduction cooling tower equipped with inlet and outlet silencers, comprising a cooling tower body, an exhaust fan, and a packing module, wherein the packing module is located inside the cooling tower body, the exhaust fan is located at the air outlet at the top of the cooling tower body, and an air inlet is provided on the side wall of the cooling tower body, characterized in that: The air inlet and the air outlet are provided with silencers; the filler module is a filler gap adjustable filler module; The filler gap adjustable filler module comprises a fixed frame, a filler plate, a rotating shaft, a swing arm, a transmission shaft, a filler gap adjusting plate and a gap adjusting electric push rod, the fixed frame is fixed on the inner wall of the cooling tower body, the upper surface of the fixed frame is spaced apart and provided with hanging grooves, the upper end of the filler plate is fixed on the rotating shaft, the lower end of the filler plate is a free end, one end of the rotating shaft is located in the hanging groove at the rear side of the fixed frame, the other end of the rotating shaft extends out of the fixed frame and is connected with one end of the swing arm, the other end of the swing arm is connected with one end of the transmission shaft, the other end of the transmission shaft extends into the elongated hole of the filler gap adjusting plate, the gap adjusting electric push rod is connected with the filler gap adjusting plate, the gap adjusting electric push rod drives the filler gap adjusting plate, the filler gap adjusting plate drives the swing arm through the transmission shaft, the swing arm drives the rotating shaft, and the rotating shaft drives the filler plate to rotate, so as to adjust the gap between adjacent filler plates. The upper side of the gap adjusting electric push rod is provided with a baffle plate, the baffle plate closes the gap between the fixed frame and the cooling tower body, so as to prevent water from flowing onto the gap adjusting electric push rod; The cooling tower further comprises a spraying assembly and a water collecting pool, the spraying assembly is located in the cooling tower body and above the filler module, the water collecting pool is located below the filler module in the cooling tower body, and the air inlet is located between the filler module and the water collecting pool. In the filler gap adjustable filler module, two vertical partitions are arranged in the fixed frame, the two vertical partitions divide the fixed frame into three cavities, and three filler plates are arranged on the rotating shaft and located in the three cavities respectively. The spraying assembly comprises a water distribution tank, three spraying groups are arranged on the bottom surface of the water distribution tank and located above the three cavities in the fixed frame respectively, and each spraying group comprises a plurality of spraying heads arranged in multiple rows and multiple columns.

2. The retrofitted inlet and outlet port silencer noise reduction type cooling tower according to claim 1, characterized in that: The cooling tower further comprises a variable frequency circulating pump and a water circulation pipeline, one end of the water circulation pipeline extends into the cooling tower body and is connected with the spraying assembly, the other end of the water circulation pipeline is in communication with the side bottom of the water collecting pool, the variable frequency circulating pump is arranged on the water circulation pipeline, and water in the water circulation pipeline is used to take away heat in the heat generating equipment.

3. The retrofitted inlet and outlet port silencer noise reduction cooling tower according to claim 2, characterized in that: The filler gap adjustable filler module further comprises a flow sensor and a controller, the flow sensor is installed on the water circulation pipeline and located close to the spraying assembly, the flow sensor transmits water flow information in the water circulation pipeline to the controller, when the water flow decreases, the controller starts the gap adjusting electric push rod to adjust the gap between adjacent filler plates to be smaller, and when the water flow increases, the controller starts the gap adjusting electric push rod to adjust the gap between adjacent filler plates to be larger.

4. The retrofitted inlet and outlet port silencer noise reduction cooling tower according to claim 3, characterized in that: The filler gap adjustable filler module further comprises a water temperature sensor installed on the water circulation pipeline and close to the spraying assembly, the water temperature sensor transmits the water temperature information in the water circulation pipeline to the controller, when the water temperature is less than the set value, the controller starts the gap adjusting electric push rod to adjust the gap between the adjacent filler plates; when the water temperature is greater than the set value, the controller starts the gap adjusting electric push rod to adjust the gap between the adjacent filler plates.

5. The retrofitted inlet and outlet port silencer noise reduction cooling tower according to claim 4, characterized in that: The spraying head is communicated with the bottom surface of the water distribution tank through an electromagnetic valve, and the water distribution tank is fixed on the cross beam in the cooling tower body; a water collecting funnel is arranged below the filler gap adjustable filler module, a drainage port at the bottom of the water collecting funnel is communicated with the upper port of the four-way valve, the lower port of the four-way valve is connected with the filter, and the left port and the right port of the four-way valve are air inlets.

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