Noise reduction type cooling tower additionally provided with air inlet and outlet silencers and filler flushing method thereof

Abstract

The invention discloses a noise reduction type cooling tower additionally provided with air inlet and outlet silencers and a filler flushing method of the cooling tower, and belongs to the technical field of water circulation cooling. The cooling tower comprises a cooling tower body, an exhaust fan and a filler module, the filler module is located in the cooling tower body, the exhaust fan is arranged at an air outlet in the top of the cooling tower body, and the filler module is located in the cooling tower body. An air inlet is formed in the side wall of the cooling tower body, and silencers are arranged at the air inlet and the air outlet. The silencers are arranged at the air inlet and the air outlet of the cooling tower body, so that the silencing and noise reduction effects are greatly improved. The filler gap adjustable filler module is adopted in the filler module, and the filler gap adjustable filler module enables the cooling tower to adjust the filler gap in real time so as to adapt to the problem that in the cooling process, the water circulation flow is large or the temperature difference of water cooling water is large; particularly, the filler gap function of the filler gap adjustable filler module is combined with the circulating cleaning of the device, so that dirt among fillers can be effectively removed, the problems of long filler replacement time and large workload caused by filler replacement due to filler blockage are solved, and the device has the characteristic of convenience and rapidness in filler cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of water circulation cooling, in particular to a noise reduction cooling tower. Background Art

[0002] The existing cooling tower includes a cooling tower body, an exhaust device, a spray device, a filler and a water storage tank. The exhaust device is arranged at the top of the cooling tower body, and the spray device is arranged below the exhaust device. The spray device includes a horizontally arranged spray pipe and a plurality of nozzles arranged on the spray pipe; the filler is located in the cooling tower and arranged below the spray device; the water storage tank is located in the cooling tower and arranged below the filler. When in use, the cooling water of the air-conditioning equipment of the central air-conditioning system flows into the spray pipe and is sprayed downward into the filler through the plurality of nozzles of the spray pipe. At this time, the cooling water sprayed through the filler forms a heat exchange with the cold air flowing through the filler and flows into the water storage tank after being cooled, and then flows back to the air-conditioning equipment of the central air-conditioning system through the water storage tank.

[0003] The existing cooling towers have the following shortcomings: first, the gas entering the cooling tower is often mixed with solid impurities, and the gas flow through the uneven surface of the impurities will produce abnormal flow such as turbulence, causing additional noise and polluting the surrounding environment; second, after the filler in the cooling tower is blocked, the filler is often replaced, which is time-consuming and labor-intensive; third, the gap between the fillers is fixed and cannot adapt to changes in water flow and water temperature, affecting the cooling effect of the cooling tower. Summary of the invention

[0004] The object of the present invention is to provide a noise reduction cooling tower equipped with air inlet and outlet silencers, which has the function of silencing and reducing noise.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A noise reduction cooling tower equipped with inlet and outlet silencers comprises a cooling tower body, an exhaust fan and a filler module. The filler module is located in the cooling tower body. The exhaust fan is arranged at the air outlet on the top of the cooling tower body. An air inlet is arranged on the side wall of the cooling tower body. Mufflers are arranged at the air inlet and the air outlet. The filler module adopts a filler gap adjustable filler module.

[0006] Furthermore, the packing gap adjustable packing module comprises a fixed frame, a packing plate, a rotating shaft, a swing arm, a transmission shaft, a packing gap adjustment plate and a gap adjustment 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 provided with hanging grooves at intervals, the upper end of the packing plate is fixed on the rotating shaft, 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 transmission shaft, the other end of the transmission shaft extends into the elongated hole of the packing gap adjustment plate, the gap adjustment electric push rod is connected to the packing gap adjustment plate, the gap adjustment electric push rod pushes the packing gap adjustment plate, the packing gap adjustment plate drives the swing arm through the transmission shaft, the swing arm drives the rotating shaft, and the rotating shaft drives the packing plate to rotate to adjust the gap between adjacent packing plates.

[0007] Furthermore, a shielding plate is provided above the gap-adjusting electric push rod, and the shielding plate closes the gap between the fixing frame and the cooling tower body to prevent water from flowing onto the gap-adjusting electric push rod.

[0008] Furthermore, a noise reduction cooling tower with inlet and outlet silencers is provided, and also has a spray assembly and a water collecting tank. The spray assembly is located in the cooling tower body, and the spray assembly is located above the filler module. The water collecting tank is arranged in the cooling tower body and below the filler module. The air inlet is located between the filler module and the water collecting tank.

[0009] Furthermore, it also includes a variable frequency circulation 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, and the other end of the water circulation pipeline is connected to the side bottom of the water collection tank. The variable frequency circulation pump is arranged on the water circulation pipeline, and the water in the water circulation pipeline is used to take away the heat in the heating equipment.

[0010] Furthermore, the packing module with adjustable packing gap also includes a flow sensor and a controller. The flow sensor is installed on the water circulation pipeline and close to the spray assembly. The flow sensor transmits the water flow information in the water circulation pipeline to the controller. When the water flow becomes smaller, the controller starts the gap adjustment electric push rod to reduce the gap between adjacent packing plates; when the water flow becomes larger, the controller starts the gap adjustment electric push rod to increase the gap between adjacent packing plates.

[0011] Furthermore, the packing module with adjustable packing gap 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 starts 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 starts the gap adjustment electric push rod to decrease the gap between adjacent packing plates.

[0012] Furthermore, in the packing module with adjustable packing gap, two vertical partitions are provided in the fixed frame, and the two or more vertical partitions divide the fixed frame into three cavities. There are three packing plates on the rotating shaft, and the three packing plates are respectively arranged in the corresponding three cavities.

[0013] Furthermore, the spray assembly includes a water distribution tank, three spray groups are provided on the bottom surface of the water distribution tank, the three spray groups are respectively located above the three cavities in the corresponding fixed frame, the spray group is composed of a plurality of spray heads arranged in multiple rows and columns, the spray heads are connected with the bottom surface of the water distribution tank through a solenoid valve, and the water distribution tank is fixed on the crossbeam in the cooling tower body; a water collecting funnel is provided under the packing gap adjustable packing module, the drainage port at the bottom of the water collecting funnel is connected with the upper port of the four-way valve, the lower port of the four-way valve is connected to the filter, and the left port and the right port of the four-way valve are air inlets.

[0014] Furthermore, a method for flushing filler of a cooling tower equipped with an inlet and outlet silencer for noise reduction comprises the following steps: S1. Among the three spray groups, open the solenoid valves on the three rows of spray heads in one of the spray groups, and close the other solenoid valves; S2. Turn off the exhaust fan, open the four-way valve, connect the upper port and the lower port of the four-way valve, and disconnect the left port and the right port of the four-way valve; S3. Start the gap adjustment electric push rod in the packing gap adjustable packing module to adjust the gap between adjacent packing plates to the maximum; S4. Turn on the variable frequency circulation pump, and the water in the water collection tank enters the water distribution tank of the spray assembly through the water circulation pipeline. The high-pressure water formed in the water distribution tank is sprayed downward through the two rows of spray heads in the spray group to clean the packing plate in a cavity of the fixed frame below the three rows of spray heads; after the cleaning is completed, close the solenoid valves on the three rows of spray heads, and open the solenoid valves on the three adjacent rows of spray heads in the spray group to clean the packing plate, and so on. After completing the three-row spray head cleaning of the packing plate in a cavity of the fixed frame, open the solenoid valves in the spray group. After the solenoid valves on all the spray heads are flushed as a whole on the packing plate in a cavity of the fixed frame, the solenoid valve of the spray group is closed; the second spray group is started to be cleaned according to the above method. After the cleaning of the second spray group is completed, the third spray group is started to be cleaned according to the above method until the cleaning of the packing gap adjustable packing module is completed; during the cleaning process, the sewage flowing out of the packing gap adjustable packing module flows downward and is collected in the water collecting funnel, and the sewage in the water of the water collecting funnel is filtered by the filter and then falls downward into the water collecting tank; S5. After cleaning is completed, turn off the variable frequency circulation pump; S6. Close the four-way valve to disconnect the upper port and the lower port of the four-way valve, and connect the upper port of the four-way valve with the left port and the right port of the four-way valve.

[0015] The beneficial effects of the present invention are: The present invention provides silencers at both the air inlet and the air outlet of the cooling tower body, thereby greatly improving the effect of silencing and reducing noise.

[0016] The packing module in the present invention adopts a packing gap adjustable packing module. The packing gap adjustable packing module enables the cooling tower to adjust the packing gap in real time to adapt to the problem of large water circulation flow or large water cooling water temperature difference during the cooling process; in particular, the packing gap function of the packing gap adjustable packing module is combined with the circulation cleaning of the present invention, which can effectively remove the dirt between the packings, solves the problem of long time and high labor consumption caused by replacing the packing due to packing blockage, and has the characteristics of convenient and quick packing cleaning.

[0017] The present invention divides the fixed frame of the packing module with adjustable packing gap into three cavities, and hangs packing plates in the three cavities, which lays a foundation for segmented cleaning; segmented cleaning can make the water flow more concentrated to increase 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 used as a cleaning water spray unit, which can increase the water pressure. The high-pressure water sprayed from the spray heads has a strong impact force to improve the cleaning effect; the cleaning unit of the present invention makes use of the original water circulation pipeline and the variable frequency circulation pump, and does not need to set up additional cleaning components, so that the overall structure of the cooling tower is simpler, which not only reduces the cost but also facilitates the subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The structural schematic diagram of the packing module shown; Figure 3 for Figure 2 The top view shown; Figure 4 for Figure 3 An enlarged view of point A is shown; Figure 5 for Figure 4 The assembly diagram of the packing gap adjustment plate, the transmission shaft and the gap adjustment electric push rod is shown; Figure 6 for Figure 1 A schematic diagram of the structure of the spray assembly shown; Figure 7 for Figure 6 Top view shown.

[0019] In the figure: 1. cooling tower body; 2. exhaust fan; 3. packing module; 4. spray assembly; 5. water collection tank; 6. air inlet; 7. variable frequency circulation pump; 8. water circulation pipeline; 9. heating equipment; 10. anti-white smoke and mist elimination module; 11. fixed frame; 12. packing plate; 13. hanging groove; 14. rotating shaft; 15. shielding plate; 16. vertical partition; 17. swing arm; 18. transmission shaft; 19. packing gap adjustment plate; 20. gap adjustment electric push rod; 21. long hole; 22. flow sensor; 23. controller; 24. water temperature sensor; 25. water distribution tank; 26. spray group; 27. spray head; 28. solenoid valve; 29. ​​crossbeam; 30. water collection funnel; 31. drainage port; 32. four-way valve; 33. left port; 34. right port; 35. filter; 36. three-row spray head. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "forward", "reverse", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] like Figure 1 As shown, a noise reduction cooling tower with air inlet and outlet silencers is provided, comprising a cooling tower body 1, an exhaust fan 2, a packing module 3, a spray assembly 4, and a water collecting tank 5. The exhaust fan 2 is arranged at the air outlet at the top of the cooling tower body 1, the packing module 3 and the spray assembly 4 are located in the cooling tower body 1, the spray assembly 4 is located above the packing module 3, the water collecting tank 5 is arranged in the cooling tower body 1 and below the packing module 3, and an air inlet 6 is arranged on the side wall of the cooling tower body 1, and the air inlet 6 is located between the packing module 3 and the water collecting tank 5. It also comprises a variable frequency circulation pump 7 and a water circulation pipeline 8, one end of which extends into the cooling tower body 1 and is connected to the spray assembly 4, and the other end of which is connected to the side bottom of the water collecting tank 5. The variable frequency circulation pump 7 is arranged on the water circulation pipeline 8, and the water in the water circulation pipeline 8 is used to take away the heat in the heat generating device 9. The air inlet 6 and the air outlet are provided with a silencer 10.

[0023] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the packing module 3 is a packing gap adjustable packing module. The packing gap adjustable packing module enables the cooling tower to adjust the packing gap in real time to adapt to the problem of large water circulation flow or large water cooling water temperature difference during the cooling process.

[0024] The packing gap adjustable packing module comprises a fixed frame 11, a packing plate 12, a rotating shaft 14, a swing arm 17, a transmission shaft 18, a packing gap adjustment plate 19 and a gap adjustment electric push rod 20, wherein the fixed frame is fixed on the inner wall of the cooling tower body, the upper surface of the fixed frame 11 is provided with hanging grooves 13 at intervals, the upper end of the packing plate 12 is fixed on the rotating shaft 14, 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 is extended from the hanging groove 13 on the rear side of the fixed frame 11. The gap adjusting electric push rod 20 extends out of the fixed frame 11 and is connected to one end of the swing arm 17, the other end of the swing arm 17 is connected to one end of the transmission shaft 18, the other end of the transmission shaft 18 extends into the elongated hole 21 of the packing gap adjustment plate 19, the gap adjustment electric push rod 20 is connected to one end of the packing gap adjustment plate 19, the gap adjustment electric push rod 20 pushes the packing gap adjustment plate 19, the packing gap adjustment plate 19 drives the swing arm 17 through the transmission shaft 18, the swing arm 17 drives the rotating shaft 14, and the rotating shaft 14 drives the packing plates 12 to rotate to adjust the gap between adjacent packing plates 12. A shielding plate 15 is provided above the gap adjustment electric push rod 20, and the shielding plate 15 closes the gap between the fixed frame 11 and the cooling tower body 1. Two vertical partitions 16 are provided in the fixed frame 11, and the two vertical partitions 16 divide the fixed frame into three cavities, and there are three packing plates 12 on the rotating shaft 14, and the three packing plates 12 are respectively arranged in the corresponding three cavities.

[0025] The packing gap adjustable packing module also includes a flow sensor 22, a controller 23 and a water temperature sensor 24. The flow sensor 22 is installed on the water circulation pipeline 8 and close to the spray assembly 4. The flow sensor 22 transmits the water flow information in the water circulation pipeline 8 to the controller 23. When the water flow decreases, the controller 23 starts the gap adjustment electric push rod 20 to reduce the gap between adjacent packing plates; when the water flow increases, the controller 23 starts the gap adjustment electric push rod 20 to increase the gap between adjacent packing plates. The water temperature sensor 24 is installed on the water circulation pipeline 8 and close to the spray assembly 4. The water temperature sensor 24 transmits the water temperature information in the water circulation pipeline 8 to the controller 23. When the water temperature is less than the set value, the controller 23 starts the gap adjustment electric push rod 20 to increase the gap between adjacent packing plates; when the water temperature is greater than the set value, the controller 23 starts the gap adjustment electric push rod 20 to reduce the gap between adjacent packing plates. It should be noted that: water flow information is the main one, supplemented by water temperature information. When the water flow information remains basically unchanged, the gap between adjacent filler plates is adjusted according to the water temperature information. If the water flow information changes greatly, the water flow information should be taken as the standard and the water temperature information should not be considered.

[0026] like Figure 6 , Figure 7As shown, the spray assembly 4 includes a water distribution tank 25, and three spray groups 26 are arranged on the bottom surface of the water distribution tank 25. The three spray groups 26 are respectively located above the three cavities in the corresponding fixed frame 11. The spray group 26 is composed of multiple spray heads 27 arranged in multiple rows and columns. The three rows of spray heads 36 in the spray group 26 constitute a cleaning water spray unit. The spray head 27 is connected to the bottom surface of the water distribution tank 25 through the solenoid valve 28. The water distribution tank 25 is fixed on the crossbeam 29 in the cooling tower body 1; a water collecting funnel 30 is provided below the packing gap adjustable packing module, and the drainage port 31 at the bottom of the water collecting funnel 30 is connected to the upper port of the four-way valve 32. The lower port of the four-way valve 32 is connected to the filter 35, and the left port 33 and the right port 34 of the four-way valve 32 are air inlets.

[0027] The fixed frame 11 is divided into three cavities, and the structural form of hanging filler plates in the three cavities lays a foundation for segmented cleaning; segmented cleaning can make the water flow more concentrated to 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 water spray unit, which can increase the water pressure. The high-pressure water sprayed from the spray heads has a strong impact force to improve the cleaning effect; the cleaning unit of the present invention makes use of the original water circulation pipeline and variable frequency circulation pump, and does not need to set up additional cleaning components, so that the overall structure of the cooling tower is simpler, which not only reduces costs but also facilitates subsequent maintenance.

[0028] A method for flushing fillers of a noise reduction cooling tower equipped with inlet and outlet silencers, comprising the following steps: S1. Among the three spray groups, open the solenoid valves on the three rows of spray heads in one of the spray groups, and close the other solenoid valves; S2. Turn off the exhaust fan, open the four-way valve, connect the upper port and the lower port of the four-way valve, and disconnect the left port and the right port of the four-way valve; S3. Start the gap adjustment electric push rod in the packing gap adjustable packing module to adjust the gap between adjacent packing plates to the maximum; S4. Turn on the variable frequency circulation pump, and the water in the water collection tank enters the water distribution tank of the spray assembly through the water circulation pipeline. The high-pressure water formed in the water distribution tank is sprayed downward through the two rows of spray heads in the spray group to clean the packing plate in a cavity of the fixed frame below the three rows of spray heads; after the cleaning is completed, close the solenoid valves on the three rows of spray heads, and open the solenoid valves on the three adjacent rows of spray heads in the spray group to clean the packing plate, and so on. After completing the three-row spray head cleaning of the packing plate in a cavity of the fixed frame, open the solenoid valves in the spray group. After the solenoid valves on all the spray heads are flushed as a whole on the packing plate in a cavity of the fixed frame, the solenoid valve of the spray group is closed; the second spray group is started to be cleaned according to the above method. After the cleaning of the second spray group is completed, the third spray group is started to be cleaned according to the above method until the cleaning of the packing gap adjustable packing module is completed; during the cleaning process, the sewage flowing out of the packing gap adjustable packing module flows downward and is collected in the water collecting funnel, and the sewage in the water of the water collecting funnel is filtered by the filter and then falls downward into the water collecting tank; S5. After cleaning is completed, turn off the variable frequency circulation pump; S6. Close the four-way valve to disconnect the upper port and the lower port of the four-way valve, and connect the upper port of the four-way valve with the left port and the right port of the four-way valve.

[0029] In the above packing flushing method, the gap between adjacent packing plates is first adjusted to the maximum so that the dirt on the packing plates can be cleaned.

[0030] Working principle: The present invention is provided with silencers at the air inlet and outlet of the cooling tower body, which greatly improves the effect of silencing and noise reduction. In particular, the packing module in the present invention adopts a packing gap adjustable packing module, which enables the cooling tower to adjust the packing gap in real time to adapt to the problem of large water circulation flow or large water cooling water temperature difference during the cooling process; in particular, the packing gap function of the packing gap adjustable packing module is combined with the circulation cleaning of the present invention, which can effectively remove the dirt between the packings, solves the problem of long time and large labor consumption caused by replacing the packing due to packing blockage, and has the characteristics of convenient and fast packing cleaning.

[0031] In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A noise reduction cooling tower with air inlet and outlet silencers, comprising a cooling tower body, an exhaust fan and a filler module, wherein the filler module is located in 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 packing module is a packing module with adjustable packing gap.

2. The noise reduction cooling tower with inlet and outlet silencers according to claim 1 is characterized in that: The packing gap adjustable packing module comprises a fixed frame, a packing plate, a rotating shaft, a swing arm, a transmission shaft, a packing gap adjustment plate and a gap adjustment electric push rod. The fixed frame is fixed on the inner wall of the cooling tower body, and the upper surface of the fixed frame is provided with hanging grooves at intervals. The upper end of the packing plate is fixed on 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, and 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, and the other end of the swing arm is connected to one end of the transmission shaft, and the other end of the transmission shaft extends into the elongated hole of the packing gap adjustment plate, the gap adjustment electric push rod is connected to the packing gap adjustment plate, the gap adjustment electric push rod pushes the packing gap adjustment plate, and the packing gap adjustment plate drives the swing arm through the transmission shaft, the swing arm drives the rotating shaft, and the rotating shaft drives the packing plate to rotate to adjust the gap between adjacent packing plates.

3. The noise reduction cooling tower with inlet and outlet silencers according to claim 2 is characterized in that: A shielding plate is arranged above the gap adjusting electric push rod, and the shielding plate closes the gap between the fixing frame and the cooling tower body to prevent water from flowing onto the gap adjusting electric push rod.

4. The cooling tower with noise reduction devices installed at the inlet and outlet according to claim 3, characterized in that: There are also a spray assembly and a water collecting pool, wherein the spray assembly is located in the cooling tower body, the spray assembly is located above the filling module, the water collecting pool is arranged in the cooling tower body and below the filling module, and the air inlet is located between the filling module and the water collecting pool.

5. The noise reduction cooling tower with inlet and outlet silencers according to claim 4 is characterized in that: It also includes a variable frequency circulation 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, and the other end of the water circulation pipeline is connected to the side bottom of the water collection tank. The variable frequency circulation pump is arranged on the water circulation pipeline. The water in the water circulation pipeline is used to take away the heat in the heating equipment.

6. The noise reduction cooling tower with inlet and outlet silencers according to claim 5 is characterized in that: The packing module with adjustable packing gap also includes a flow sensor and a controller. The flow sensor is installed on the water circulation pipeline and close to the spray assembly. The flow sensor transmits the water flow information in the water circulation pipeline to the controller. When the water flow becomes smaller, the controller starts the gap adjustment electric push rod to reduce the gap between adjacent packing plates; when the water flow becomes larger, the controller starts the gap adjustment electric push rod to increase the gap between adjacent packing plates.

7. The noise reduction cooling tower with inlet and outlet silencers according to claim 6 is characterized in that: The packing module with adjustable packing gap 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 starts 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 starts the gap adjustment electric push rod to decrease the gap between adjacent packing plates.

8. The noise reduction cooling tower with inlet and outlet silencers according to claim 7 is characterized in that: In the packing module with adjustable packing gap, two vertical partitions are arranged in the fixed frame, and the two or more vertical partitions divide the fixed frame into three cavities. There are three packing plates on the rotating shaft, and the three packing plates are respectively arranged in the corresponding three cavities.

9. The noise reduction cooling tower with inlet and outlet silencers according to claim 8, characterized in that: The spray assembly includes a water distribution tank, three spray groups are arranged on the bottom surface of the water distribution tank, and the three spray groups are respectively located above the three cavities in the corresponding fixed frame. The spray group is composed of multiple spray heads arranged in multiple rows and columns, and the spray heads are connected with the bottom surface of the water distribution tank through a solenoid valve. The water distribution tank is fixed on the crossbeam in the cooling tower body; a water collecting funnel is provided below the packing gap adjustable packing module, and the drainage port at the bottom of the water collecting funnel is connected with the upper port of the four-way valve, and the lower port of the four-way valve is connected to the filter, and the left port and the right port of the four-way valve are air inlets.

10. The method for flushing fillers of a cooling tower with noise reduction devices installed at the inlet and outlet according to claim 9, characterized in that: The following steps are involved: S1. Among the three spray groups, open the solenoid valves on the three rows of spray heads in one of the spray groups, and close the other solenoid valves; S2. Turn off the exhaust fan, open the four-way valve, connect the upper port and the lower port of the four-way valve, and disconnect the left port and the right port of the four-way valve; S3. Start the gap adjustment electric push rod in the packing gap adjustable packing module to adjust the gap between adjacent packing plates to the maximum; S4. Turn on the variable frequency circulation pump, and the water in the water collection tank enters the water distribution tank of the spray assembly through the water circulation pipeline. The high-pressure water formed in the water distribution tank is sprayed downward through the two rows of spray heads in the spray group to clean the packing plate in a cavity of the fixed frame below the three rows of spray heads; after the cleaning is completed, close the solenoid valves on the three rows of spray heads, and open the solenoid valves on the three adjacent rows of spray heads in the spray group to clean the packing plate, and so on. After completing the three-row spray head cleaning of the packing plate in a cavity of the fixed frame, open the solenoid valves in the spray group. After the solenoid valves on all the spray heads are flushed as a whole on the packing plate in a cavity of the fixed frame, the solenoid valve of the spray group is closed; the second spray group is started to be cleaned according to the above method. After the cleaning of the second spray group is completed, the third spray group is started to be cleaned according to the above method until the cleaning of the packing gap adjustable packing module is completed; during the cleaning process, the sewage flowing out of the packing gap adjustable packing module flows downward and is collected in the water collecting funnel, and the sewage in the water of the water collecting funnel is filtered by the filter and then falls downward into the water collecting tank; S5. After cleaning is completed, turn off the variable frequency circulation pump; S6. Close the four-way valve to disconnect the upper port and the lower port of the four-way valve, and connect the upper port of the four-way valve with the left port and the right port of the four-way valve.

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