High-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism

Abstract

The application provides a high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism, which is used for noise reduction of a cooling tower main body and dust removal of inlet gas, and comprises a noise reduction box and an air inlet dust removal mechanism, a noise reduction cavity is formed between the inner wall of the noise reduction box and the cooling tower main body, and the inner wall of the noise reduction cavity is provided with a multilayer composite noise reduction structure; the air inlet dust removal mechanism comprises an air inlet pipe, an air outlet pipe and a dust removal box, an inertial dust removal net is movably installed at the inlet end of the air inlet pipe, a spraying dust removal device is arranged in the air inlet pipe, the air inlet pipe is in pipeline communication with the dust removal box through a drainage dust collection pipe, and the dust removal box and the spraying dust removal device are in waterway circulation communication through a pipeline. Through the air inlet dust removal mechanism, a multistage dust removal system of "inertial primary filtration + spraying dust removal + three-stage deep filtration" is constructed, large-particle dust and small suspended impurities in air can be intercepted layer by layer, closed loop circulation of spraying water is realized by relying on a negative pressure pump and a conveying pipe, and water resource consumption is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of industrial cooling equipment technology, and in particular to a high-efficiency integrated dust removal and noise reduction cooling tower dust removal mechanism. Background Technology

[0002] As an indispensable core heat dissipation device in industrial circulating water systems and HVAC systems, the core function of cooling towers is to achieve efficient heat exchange between circulating water and air through forced or natural ventilation, transferring excess heat generated during industrial production or refrigeration to the atmosphere. After the circulating water temperature drops to the required range, it flows back into the system, completing the key closed loop of "heat absorption ~ heat dissipation ~ circulation". With its stable heat dissipation performance and flexibility to adapt to different working conditions, this equipment has become a key infrastructure to ensure continuous industrial production and the cooling needs of people's lives, and it is widely used in many fields such as chemical, power, construction, metallurgy, pharmaceutical, and food processing.

[0003] However, traditional cooling towers generally face two major pain points during long-term operation: First, poor air intake and dust removal. Sand, debris, and suspended particulate matter in the outside air enter the tower with the airflow and easily adhere to the surface of the packing, causing blockage. This not only reduces heat exchange efficiency and increases energy consumption but also accelerates the corrosion and aging of tower components, significantly shortening the equipment's service life. Second, severe noise pollution during operation. The low- and mid-frequency noise generated by the cooling tower fan rotation and water flow impact spreads directly outward. Especially for equipment installed in factory workshops and around urban buildings, the noise level often exceeds environmental protection standards, causing significant interference to the surrounding production environment and residents' lives. At the same time, some traditional dust removal solutions often use a single filter for interception, resulting in high maintenance frequency and significant water waste. Conventional noise reduction methods often involve simply adding sound insulation cotton, which is difficult to effectively reduce noise across the entire frequency range and cannot meet the stringent requirements of modern industry for equipment that is efficient, environmentally friendly, and low-consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, the present invention provides a high-efficiency integrated dust removal and noise reduction cooling tower dust removal mechanism, which can effectively solve the problem of poor dust removal effect of existing cooling towers, effectively reduce the corrosion and aging of tower components, extend the service life of equipment, and reduce operating noise.

[0005] The technical solution adopted by this invention to solve its technical problem is: a high-efficiency integrated dust removal and noise reduction cooling tower dust removal mechanism, used for noise reduction of the cooling tower body and dust removal of the introduced gas, including a noise reduction box and an air intake dust removal mechanism. The cooling tower body is set inside the noise reduction box, and the air intake dust removal mechanism is set on the two outer walls of the noise reduction box. A cavity is formed between the inner wall of the noise reduction box and the cooling tower body. This cavity is a noise reduction chamber, and the inner wall of the noise reduction chamber is provided with a multi-layer composite noise reduction structure. The air intake dust removal mechanism includes an air inlet pipe, an air outlet pipe, and a dust removal box. The outlet end of the air inlet pipe is connected to the cooling tower body through an air delivery pipe. An inertial dust removal net is movably installed at the inlet end of the air inlet pipe. A spray dust removal device is provided inside the air inlet pipe. The air inlet pipe is connected to the dust removal box through a drainage dust collection pipe. The dust removal box and the spray dust removal device are connected through a water circulation pipe.

[0006] In the above scheme, a noise reduction box is designed outside the main body of the cooling tower. During operation, the noise reduction box not only performs noise reduction but also integrates dust removal and cooling functions. An air inlet dust removal mechanism is designed on the noise reduction box, which not only effectively filters the airflow but also provides a stable buffer space for the incoming airflow. Simultaneously, the noise generated by the spray dust removal is absorbed by the multi-layered composite noise reduction structure on the inner wall of the noise reduction box. Noise generated by airflow turbulence and water droplet impact during dust removal does not require additional noise reduction components, achieving a synergistic effect of dust removal and noise reduction.

[0007] Furthermore, the multi-layer composite noise reduction structure consists of a sound-absorbing cotton layer, a perforated metal plate layer, and a damping sound-insulating plate layer from the inside out. Adjacent layers are bonded and fixed together using environmentally friendly adhesives. The thickness of the multi-layer composite noise reduction structure is 8-12 cm. This multi-layer composite noise reduction structure effectively absorbs and insulates sound. Through material and thickness design, it can meet noise reduction requirements across the entire frequency range. Simultaneously, the thermal conductivity of the materials themselves is within the normal range, preventing the formation of a heat insulation barrier that hinders heat dissipation.

[0008] Furthermore, the inertial dust collector is made of stainless steel with a mesh diameter of 1-2 mm. The inertial dust collector is detachably connected to the inlet end of the air inlet duct via a snap-fit ​​mechanism. The inertial dust collector provides initial isolation of the incoming air, removing larger particles of sand, debris, and suspended particulate matter from the outside air.

[0009] Furthermore, the aforementioned spray dust removal device includes at least two annular spray pipes, with adjacent annular spray pipes connected by interconnected pipes, and each annular spray pipe is provided with a plurality of atomizing nozzles at intervals. The annular spray pipes and atomizing nozzles are used to spray dust removal onto the incoming gas.

[0010] Preferably, the atomizing nozzles on the same annular spray pipe are distributed at equal angles along the annular spray pipe, and the atomizing nozzles on adjacent annular spray pipes correspond one-to-one, with the spray direction of the atomizing nozzles all pointing towards the axis of the air inlet pipe. By designing the position distribution and spray direction of the atomizing nozzles, the air inlet channel is sprayed in a directional manner, which helps to improve the efficiency of spray dust removal.

[0011] Furthermore, the dust collector is equipped with a perforated water collection plate, and a drainage dust collection pipe extends into the dust collector. The perforated water collection plate is located below the drainage dust collection pipe, and a three-stage filter element is movably connected to the bottom of the perforated water collection plate. A water collection trough is provided below the three-stage filter element in the dust collector, and a circulation conveying pipe is provided between the water collection trough and the spray dust removal device. The perforated water collection plate is used to collect droplets generated by the upper spray and, after coarse filtration, guides the droplets to the lower filter element for further filtration.

[0012] Preferably, the perforated water collection plate is made of nickel-plated stainless steel, with perforations of 3-5mm in diameter, and is fixedly connected to the inner wall of the dust collector by bolts. The perforations in the perforated water collection plate allow dust-laden droplets to fall, while large particles can be directly filtered out. Simultaneously, the bolted connection allows for easy disassembly and cleaning of the perforated water collection plate, facilitating maintenance.

[0013] Furthermore, the three-stage filter element consists of a PP cotton filter layer, an activated carbon adsorption layer, and an ultrafiltration membrane layer from top to bottom, and the three-stage filter element is detachably connected to the perforated water collection plate via Velcro. The three-stage filter element effectively intercepts fine suspended impurities layer by layer, facilitating the continued entry of the filtered droplets into the spray circulation system.

[0014] Furthermore, in the spray cycle, a negative pressure pump is installed outside the dust collection box. The circulation conveying pipe includes a primary conveying pipe and a secondary conveying pipe. One end of the primary conveying pipe is connected to the water collection tank, and the other end is connected to the water inlet of the negative pressure pump. One end of the secondary conveying pipe is connected to the water outlet of the negative pressure pump, and the other end is connected to the spray dust removal device. The negative pressure pump and conveying pipes achieve a closed-loop recycling of the spray water, significantly reducing water consumption.

[0015] Furthermore, the inner diameters of the air inlet pipe and the air delivery pipe are designed reasonably. The air delivery pipe is made of PVC material, and its inner diameter is 1.2 to 1.5 times that of the air inlet pipe. Both ends of the air delivery pipe are respectively connected to the air inlet pipe and the cooling tower body through flange sealing.

[0016] The beneficial effects of this invention are that it provides a high-efficiency integrated cooling tower dust removal mechanism that combines dust removal and noise reduction. By setting up an air intake dust removal mechanism, it constructs a multi-stage dust removal system consisting of "inertial primary filtration + spray dust suppression + three-stage deep filtration". This system can intercept large dust particles and fine suspended impurities in the air layer by layer. At the same time, it relies on a negative pressure pump and delivery pipe to achieve closed-loop recycling of spray water, which greatly reduces water consumption. Furthermore, each dust removal component adopts a detachable connection method such as buckles and bolts, which facilitates later maintenance and replacement. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the structure of the present invention; Figure 3 This is a front sectional view of the structure of the present invention; Figure 4 This is a partial cross-sectional view of the air intake and dust removal mechanism in the structure of the present invention; Figure 5 This is a partial sectional view of the air intake and dust removal mechanism in the structure of the present invention. Figure 6 This is a partial cross-sectional schematic diagram of the multi-layer composite noise reduction structure in the present invention.

[0019] In the diagram: 1. Noise Reduction Box; 2. Cooling Tower Main Body; 3. Air Inlet Dust Removal Mechanism; 301. Air Inlet Pipe; 302. Dust Removal Box; 303. Air Delivery Pipe; 304. Inertial Dust Removal Net; 305. Annular Spray Pipe; 306. Atomizing Nozzle; 307. Drainage Dust Collection Pipe; 308. Hollow Water Collection Plate; 309. Three-Stage Filter Element; 310. Water Collection Tank; 311. Negative Pressure Pump; 312. Primary Delivery Pipe; 313. Secondary Delivery Pipe; 4. Water Inlet Pipe; 5. Drainage Pipe; 6. Noise Reduction Chamber; 7. Multi-Layer Composite Noise Reduction Structure. Detailed Implementation

[0020] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and the orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be limiting, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0021] like Figure 1The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism shown is the preferred embodiment of the present invention. The dust removal mechanism is used to reduce noise in the main body of the cooling tower and remove dust from the gas entering the main body of the cooling tower, including a noise reduction box 1 and an air inlet dust removal mechanism 3.

[0022] The cooling tower body 2 is located inside the noise reduction box 1, while the air intake and dust removal mechanism 3 is located on the two outer walls of the noise reduction box 1. A cavity is formed between the inner wall of the noise reduction box 1 and the cooling tower body 2. This cavity is the noise reduction chamber 6, and the inner wall of the noise reduction chamber 6 is provided with a multi-layer composite noise reduction structure 7. A water inlet pipe 4 and a drain pipe 5 are installed through the side wall of the noise reduction box 1, and one end of both the water inlet pipe 4 and the drain pipe 5 is connected to the cooling tower body 2.

[0023] The multi-layer composite noise reduction structure 7 consists of, from the inside out, a sound-absorbing cotton layer, a perforated metal plate layer, and a damping sound insulation plate layer, with adjacent layers bonded together using environmentally friendly adhesives. The thickness of the multi-layer composite noise reduction structure 7 is 8-12cm. The multi-layer composite design (sound-absorbing cotton layer + perforated metal plate layer + damping sound insulation plate layer) makes this noise reduction structure not merely a single-function noise reduction component, but a full-frequency noise reduction system optimized through multi-condition simulation. The sound-absorbing cotton layer itself possesses highly efficient absorption capabilities for mid-to-high frequency noise generated by airflow turbulence and instantaneous noise from water droplet impacts, achieving a sound absorption coefficient of over 0.8 in the core frequency band (500-2000Hz). Through material and thickness design, it can meet the noise reduction requirements across the entire frequency range.

[0024] Meanwhile, to meet the cooling requirements of the cooling tower, the added noise-reducing material has a thermal conductivity within the normal range. This effectively ensures that the multi-layer composite noise-reducing structure 7, while effectively reducing noise across the entire frequency band, will not form a heat insulation barrier that hinders heat dissipation, thus not affecting the actual function of the cooling tower. Under normal operating conditions, the temperature difference between the inside and outside of the noise-reducing chamber 1 is only 1~2℃, far below the critical temperature difference value that affects heat exchange efficiency. Simultaneously, the chamber design ensures efficient exhaust of hot air. The airflow path of the noise-reducing chamber 1 is optimized. Cold air enters the main body 2 of the cooling tower after dust removal, and the hot air, after heat exchange, is discharged from the noise-reducing chamber 1 through a dedicated exhaust channel. The buffering effect of the chamber prevents hot air from directly impacting the noise-reducing structure and guides the hot air to exit quickly, preventing hot air accumulation and ensuring that the cooling tower's heat dissipation efficiency is not affected.

[0025] like Figure 3 and Figure 6As shown, in the design of the noise reduction box 1 and the cooling tower body 2, the entire noise reduction box 1 is proportionally adapted to the outer dimensions of the cooling tower body 2 to ensure the fit between the chamber and the cooling tower and the uniformity of the acoustic effect. The top of the noise reduction box 1 adopts an arc-shaped structure, and the top is connected to the vertical sidewall with rounded corners. The arc of the top arc structure adopts a 90°~120° superior arc design (i.e., π / 2~2π / 3 arc), and the two ends of the arc structure are smoothly connected to the vertical sidewalls on both sides of the chamber, forming a top transition without sharp corners. The arc radius can be taken as 1 / 4~1 / 3 of the outer diameter of the top of the cooling tower body 2 / the diameter of the circumscribed circle. If it is a square cooling tower, the arc radius is calculated based on the diameter of the circumscribed circle of the top. The suitable arc radius for conventional industrial cooling towers is 300~600mm (which can be scaled proportionally according to the actual size of the cooling tower). The arc height is designed to be 1 / 2 to 2 / 3 of the arc radius, i.e., 150 to 400 mm, and the arc height does not exceed 1 / 4 of the overall vertical height of the noise reduction cavity 6 chambers, so as to avoid occupying too much cavity space and affecting the installation of the noise reduction structure.

[0026] The top of the noise reduction chamber 1 is connected to the vertical sidewall by an arc, the center of curvature of which coincides with the geometric center of the cooling tower body 2. This ensures that the arc top forms a uniform annular arc area around the cooling tower, without any local protrusions or depressions. The projected width of the arc is consistent with the circumferential width of the cooling tower body 2, meaning that the horizontal coverage of the arc perfectly matches the annular width of the noise reduction chamber 6, with a ratio of 1:1. The vertical dimension of the arc segment is in a ratio of 1:8 to 1:10 to the top height of the cooling tower body 2, ensuring that the acoustic effect of the arc does not exceed the vertical proportion of the overall shape of the cooling tower, while also taking into account the overall structural compactness of the equipment.

[0027] The junction between the top arc and the vertical sidewall of the chamber adopts a rounded chamfer design. The chamfer radius is 1 / 5 to 1 / 4 of the top arc radius, i.e., 60 to 150 mm, and the chamfer arc is 45° to 60°. The chamfer and the top arc and sidewall are smoothly tangentially connected without right angles or sharp corners.

[0028] If the cooling tower noise reduction chamber 6 adopts a right-angle design at the top, it will create an acoustic reflection dead angle. The low- and mid-frequency noise generated during the operation of the cooling tower will be reflected and superimposed multiple times at the right angle, resulting in noise energy accumulation and weakening the absorption effect of the noise reduction structure. After the noise wave comes into contact with the curved surface, it will disperse in all directions along the curved surface in a diffuse reflection state, rather than superimposing at the right angle. This allows the sound wave to be evenly transmitted to the multi-layer composite noise reduction structure 7 on the inner wall of the chamber, improving the noise absorption efficiency of the noise reduction structure and avoiding excessive local noise energy. The rounded corners eliminate the sharp corner reflections at the top and side walls, avoiding secondary reflections of sound waves at the junction. This ensures that the entire process of noise transmission from the main body 2 of the cooling tower to the outer wall of the noise reduction chamber 1 is a smooth diffuse reflection path, achieving gradual dissipation of noise. The smooth curved surface of the arc top allows for unimpeded abrupt change in airflow at the top of the chamber, avoiding the airflow vortices at the top of the traditional right-angle chamber (where air stagnation areas are easily formed). This ensures that the cooling gas flows evenly along the annular shape of the chamber to the air inlet of the cooling tower, improving the smoothness of airflow. The smooth transition of the rounded corners ensures that the airflow flows smoothly from the vertical sidewalls to the top without corner resistance, reducing wind pressure loss and ensuring that the cooling gas delivered through the air delivery pipe 303 can efficiently enter the cooling tower body 2, guaranteeing the heat exchange efficiency of the cooling tower. The rounded corners and chamfered design eliminates dead angles, making it easier to clean the interior of the chamber and repair or replace the noise reduction structure later. The absence of right-angle dead angles reduces the difficulty of maintenance operations.

[0029] The air intake dust removal mechanism 3 includes an air intake pipe 301, an air outlet pipe, and a dust removal box 302. The outlet end of the air intake pipe 301 is connected to the cooling tower body 2 through an air delivery pipe 303. The air delivery pipe 303 is made of PVC material, and the inner diameter of the air delivery pipe 303 is 1.2 to 1.5 times the inner diameter of the air intake pipe 301. Both ends of the air delivery pipe 303 are respectively connected to the air intake pipe 301 and the cooling tower body 2 through flange sealing.

[0030] In the combined design of the air intake dust removal mechanism 3 and the noise reduction box 1, the air intake duct 301 and the dust removal box 302 can adopt a streamlined structure design, which can optimize the curvature of their inner walls (controlled within the range of 0.1~0.3) to reduce airflow separation and turbulence generation, thereby reducing noise generation at the source. Therefore, the dust removal box 302 and part of the air intake duct 301 are located outside the noise reduction box 1, without needing to be placed inside the box, and there is no need to continue designing an arc-shaped sound-absorbing panel outside the air intake dust removal mechanism 3, which can further reduce noise and achieve a better noise reduction effect. The existing composite noise reduction structure has achieved full coverage of mid-high-low frequency noise. If additional sound-absorbing panels are added or the air intake dust removal mechanism 3 is enclosed in the noise reduction box 1, it may lead to excessive superposition of sound absorption in specific frequency bands, which will affect the airflow efficiency and increase the energy consumption of the equipment. The buffer space size of the noise reduction cavity 6 is designed based on the balance between heat exchange efficiency and noise reduction effect. Adding new panels will compress the air intake channel, which may disrupt the original flow field stability and thus affect the synergistic effect of dust removal and cooling.

[0031] like Figure 4 As shown, an inertial dust collector 304 is movably installed at the inlet end of the air inlet duct 301. The inertial dust collector 304 is made of stainless steel and has a mesh diameter of 1-2 mm. The inertial dust collector 304 is detachably connected to the inlet end of the air inlet duct 301 via a snap-fit ​​connection. The inertial dust collector 304 can perform preliminary isolation of the incoming air, removing larger particles of sand, debris, and suspended particulate matter from the outside air.

[0032] like Figure 4 As shown, a spray dust removal device is installed inside the air inlet duct 301. The air inlet duct 301 is connected to the dust collector 302 via a drainage dust collection pipe 307. The dust collector 302 and the spray dust removal device are connected by a water circulation system. The drainage dust collection pipe 307 extends into the dust collector 302, and its diameter ranges from 8 to 10 cm. The pipe body of the drainage dust collection pipe 307 is welded and sealed to the inner bottom wall of the air inlet duct 301 and the top wall of the dust collector 302.

[0033] Specifically, the spray dust removal device includes two annular spray pipes 305, which are connected. Each annular spray pipe 305 has four atomizing nozzles 306 spaced apart. The atomizing nozzles 306 on the same annular spray pipe 305 are distributed at equal angles along the pipe, and the atomizing nozzles 306 on adjacent pipes 305 correspond one-to-one. The spray direction of the atomizing nozzles 306 is always directed towards the axis of the air inlet pipe 301. The annular spray pipes 305 and atomizing nozzles 306 are used to spray dust onto the incoming gas. By designing the position distribution and spray direction of the atomizing nozzles 306, the air inlet flow is sprayed in a directional manner, which helps to improve the efficiency of the spray dust removal.

[0034] The spray volume of the atomizing nozzle 306 can be designed to be 0.5~1L / min. The air intake of the cooling tower is atmospheric pressure ambient air required for industrial cooling. The airflow maintains a stable flow rate in the air intake duct 301. The single nozzle spray volume of 0.5~1L / min is precisely matched with the flow rate and velocity of the cooling gas in the air intake duct 301.

[0035] The fine water mist generated by the atomizing nozzle 306 forms a uniform and dead-angle-free atomization area within the air inlet duct 301, allowing for full contact and collision with the cooling gas. This causes the fine dust particles suspended in the gas to be adsorbed by the water mist, forming dust-laden water droplets that naturally settle, achieving efficient purification of the cooling gas. This ensures that the air entering the cooling tower body 2 is free of impurities and prevents packing blockage. An appropriate amount of water mist will slightly humidify and cool the cooling gas, helping to improve the heat exchange efficiency of the cooling tower body 2, without causing excessive humidity inside the tower. The amount of dust-laden wastewater generated by this spray is moderate, which can be easily handled by the subsequent drainage dust collection pipe 307, the three-stage filter element 309, and the water circulation system without requiring upgrades to the equipment specifications, ensuring stable operation of the dust removal water circulation.

[0036] If the spray volume is less than 0.5L / min, the imbalance between the spray and the introduced cooling gas will directly lead to insufficient gas-liquid contact: the atomization area is small and the water mist concentration is low, which cannot effectively capture fine suspended dust in the cooling gas. Some dust will directly enter the cooling tower body 2 with the airflow. Long-term accumulation will cause packing blockage, reduced heat exchange efficiency, and accelerated corrosion of tower components. In addition, too small a spray volume cannot form enough settled water droplets, and the dust removal effect will be greatly reduced, losing the core function of spray dust suppression.

[0037] If the spray volume exceeds 1L / min, it far exceeds the dust removal and humidification requirements of the cooling gas. The water mist cannot fully contact the cooling gas in the air inlet pipe 301, easily forming water that adheres to the inner wall of the pipe and may even enter the cooling tower body 2 with the airflow. This causes the packing material inside the tower to become waterlogged, increases ventilation resistance, and affects the normal operation of the cooling system. Excessive dust-laden wastewater will increase the transport load of the drainage dust collection pipe 307, easily causing pipe siltation and blockage. At the same time, it will significantly increase the filtration pressure of the three-stage filter element 309, accelerate the clogging and aging of the filter layer, and increase the frequency and cost of maintenance. The water supply load of the negative pressure pump 311 will increase significantly, increasing equipment energy consumption. Excessive water mist will make the humidity of the cooling gas too high. After entering the cooling tower, it will overlap with the circulating water, causing water vapor to overflow from the tower and cause moisture and corrosion to the surrounding equipment.

[0038] like Figure 5As shown, the dust collector 302 is equipped with a perforated water collection plate 308, located below the drain dust collection pipe 307. A three-stage filter element 309 is movably connected to the bottom of the perforated water collection plate 308. The perforated water collection plate 308 collects droplets generated by the upper spray and, after coarse filtration, guides the droplets to the lower filter element for further filtration. The perforated water collection plate 308 is made of nickel-plated stainless steel, with perforations of 3-5mm in diameter. The perforated water collection plate 308 is fixed to the inner wall of the dust collector 302 by bolts. The perforation size of the perforated water collection plate 308 allows dust-laden droplets to fall, while large particles are directly filtered. The bolted connection also allows for easy disassembly and cleaning of the perforated water collection plate 308, facilitating maintenance. The three-stage filter element 309 consists of a PP cotton filter layer, an activated carbon adsorption layer, and an ultrafiltration membrane layer from top to bottom. The three-stage filter element 309 and the perforated water collection plate 308 are detachably connected via Velcro. The three-stage filter element 309 effectively intercepts fine suspended impurities layer by layer, facilitating the continued entry of filtered droplets into the spray circulation system.

[0039] A water collection tank 310 is located below the three-stage filter element 309 inside the dust collector 302. The water collection tank 310 is used to collect filtered water and provide circulating water for the spray dust removal device. During the spray cycle, a circulation conveying pipe is provided between the water collection tank 310 and the spray dust removal device. A negative pressure pump 311 is located outside the dust collector 302. The circulation conveying pipe includes a primary conveying pipe 312 and a secondary conveying pipe 313. One end of the primary conveying pipe 312 is connected to the water collection tank 310, and the other end is connected to the water inlet of the negative pressure pump 311. One end of the secondary conveying pipe 313 is connected to the water outlet of the negative pressure pump 311, and the other end is connected to the spray dust removal device. The negative pressure pump 311 and the conveying pipe achieve a closed-loop recycling of the spray water, significantly reducing water consumption. In actual selection, the rated flow rate of the negative pressure pump 311 is 5~8L / min, the rated head is 3~5m, and the negative pressure pump 311 is fixedly installed on the outside of the dust collection box 302 by a bracket.

[0040] In this embodiment, the noise reduction cavity 6 is not an independent noise reduction component, but rather a core link that enables the coordinated operation of the three major functions of dust removal, cooling, and noise reduction.

[0041] (1) The noise reduction chamber 6 associated with the dust removal module provides a stable buffer space for the airflow of the air intake dust removal mechanism 3. After being purified by multi-stage dust removal, the air enters the noise reduction chamber 6 through the air delivery pipe 303. The airtightness of the chamber can prevent unpurified air from seeping into the cooling tower body 2 through gaps, ensuring that the dust removal effect is not compromised. At the same time, the composite noise reduction structure on the inner wall of the noise reduction chamber 6 can absorb the noise generated by airflow turbulence and water droplet impact during the dust removal process, without the need for additional noise reduction components, thus achieving simultaneous dust removal and noise reduction.

[0042] (2) The spatial dimensions of the noise reduction cavity 6 associated with the cooling module are based on the optimized design of the cooling tower's heat exchange efficiency. The cavity is arranged around the main body 2 of the cooling tower, which reduces the operating noise of the cooling fan through the composite noise reduction structure, and ensures a reasonable distance between the main body 2 of the cooling tower and the outside world, avoiding the backflow of hot air due to excessive space. In addition, after the air is purified by dust removal, it can form a uniform airflow field after entering the noise reduction cavity 6, so that the cold air can fully contact the cooling tower packing, improve the uniformity and efficiency of heat exchange, and achieve the synergistic effect of noise reduction and cooling.

[0043] This highly efficient integrated cooling tower dust removal and noise reduction mechanism, through the setting of the air intake dust removal mechanism 3, constructs a multi-stage dust removal system of "inertial primary filtration + spray dust suppression + three-stage deep filtration", which can intercept large dust particles and fine suspended impurities in the air layer by layer. At the same time, relying on the negative pressure pump 311 and the delivery pipe, the spray water is recycled in a closed loop, which greatly reduces water consumption. Moreover, each dust removal component adopts a detachable connection method such as buckle and bolt, which is convenient for later maintenance and replacement.

[0044] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-efficiency integrated dust removal and noise reduction cooling tower dust removal mechanism, used for noise reduction of the cooling tower body and dust removal of the introduced gas, characterized in that: It includes a noise reduction box and an air intake and dust removal mechanism. The main body of the cooling tower is located inside the noise reduction box, while the air intake and dust removal mechanism is located on the two outer walls of the noise reduction box. A cavity is formed between the inner wall of the noise reduction box and the main body of the cooling tower. This cavity is a noise reduction chamber, and the inner wall of the noise reduction chamber is provided with a multi-layer composite noise reduction structure. The aforementioned air intake dust removal mechanism includes an air intake pipe, an air outlet pipe, and a dust removal box. The outlet end of the air intake pipe is connected to the main body of the cooling tower via an air delivery pipe. An inertial dust removal screen is movably installed at the inlet end of the air intake pipe. A spray dust removal device is installed inside the air intake pipe. The air intake pipe is connected to the dust removal box via a drainage dust collection pipe. The dust removal box and the spray dust removal device are connected via a water circulation pipeline.

2. The dust removal mechanism of a high-efficiency integrated cooling tower for dust removal and noise reduction as described in claim 1, characterized in that: The multi-layer composite noise reduction structure consists of a sound-absorbing cotton layer, a perforated metal plate layer, and a damping sound insulation plate layer from the inside out. Adjacent layers are bonded and fixed with environmentally friendly adhesives. The thickness of the multi-layer composite noise reduction structure is 8-12cm.

3. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 1, characterized in that: The inertial dust removal mesh is made of stainless steel with a mesh diameter of 1-2 mm. The inertial dust removal mesh is detachably connected to the inlet end of the air inlet pipe via a snap fastener.

4. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 1, characterized in that: The aforementioned spray dust removal device includes at least two annular spray pipes, with adjacent annular spray pipes connected to each other, and each annular spray pipe is provided with several atomizing nozzles at intervals.

5. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 4, characterized in that: The atomizing nozzles on the same annular spray pipe are distributed at equal angles along the annular spray pipe, and the atomizing nozzles on two adjacent annular spray pipes correspond one-to-one, and the spray direction of the atomizing nozzles all points to the axis of the air inlet pipe.

6. The dust removal mechanism of a high-efficiency integrated cooling tower for dust removal and noise reduction as described in claim 1, characterized in that: The dust collector is equipped with a perforated water collection plate, and the drainage dust collection pipe extends into the dust collector. The perforated water collection plate is located below the drainage dust collection pipe. A three-stage filter element is movably connected to the bottom of the perforated water collection plate. A water collection trough is provided below the three-stage filter element in the dust collector. A circulation conveying pipe is provided between the water collection trough and the spray dust removal device.

7. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 6, characterized in that: The hollow water collection plate is made of nickel-plated stainless steel, with a hollow hole diameter of 3~5mm, and the hollow water collection plate is fixedly connected to the inner wall of the dust collector by bolts.

8. The dust removal mechanism of a high-efficiency integrated cooling tower for dust removal and noise reduction as described in claim 6, characterized in that: The three-stage filter element consists of a PP cotton filter layer, an activated carbon adsorption layer, and an ultrafiltration membrane layer from top to bottom. The three-stage filter element and the hollow water collection plate are detachably connected by Velcro.

9. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 6, characterized in that: The dust collection box is equipped with a negative pressure pump on its outside. The circulating conveying pipe includes a primary conveying pipe and a secondary conveying pipe. One end of the primary conveying pipe is connected to the water collection tank, and the other end is connected to the water inlet of the negative pressure pump. One end of the secondary conveying pipe is connected to the water outlet of the negative pressure pump, and the other end is connected to the spray dust removal device.

10. The high-efficiency dust removal and noise reduction integrated cooling tower dust removal mechanism as described in claim 1, characterized in that: The air delivery pipe is made of PVC material, and its inner diameter is 1.2 to 1.5 times that of the air inlet pipe. Both ends of the air delivery pipe are sealed to the air inlet pipe and the cooling tower body through flanges.

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