Turbulence-enhanced efficient energy-saving wet dust removal device

Abstract

The invention belongs to the technical field of wet dust removal devices, and particularly relates to a turbulence-enhanced efficient energy-saving wet dust removal device, and a Venturi condensation unit comprises a shrinkage pipe, an adjustable throat pipe and a diffusion pipe which are connected in sequence; the turbulent flow mixing and strengthening unit is connected between an outlet of the diffusion pipe and an inlet of the fiber grid condensation and filtration unit, and a static turbulent flow generator is arranged in the turbulent flow mixing and strengthening unit and used for enabling gas-liquid-solid multiphase flow from the Venturi condensation unit to generate rotation and turbulent flow; the fiber grid coagulation filtering unit comprises a shell and at least one layer of fiber grid plate arranged in the shell; the washing liquid circulation assembly comprises a liquid storage tank, a water pump and a first connecting pipeline and is used for conveying washing liquid in the liquid storage tank to the atomizing nozzles and the liquid distribution device. The system has the advantages of low-resistance operation, self-cleaning capability, intelligent adjustment and high system integration degree.

Description

Technical Field

[0001] This invention belongs to the technical field of wet dust removal devices, specifically relating to a turbulence-enhanced high-efficiency and energy-saving wet dust removal device. Background Technology

[0002] Wet dust collection technology is widely used in industrial production, but traditional devices generally suffer from the problem of balancing efficiency and energy consumption. While common venturi dust collectors are highly efficient at capturing fine dust, they rely on high throat velocities for atomization, resulting in high system resistance, excessive energy consumption, and uncontrollable operating costs. Wet fiber grid dust collectors, although simple in structure and with low resistance, have limited effectiveness in removing fine dust, and the fiber surfaces are easily clogged by dust, requiring frequent shutdowns for cleaning and maintenance, thus affecting continuous production.

[0003] Existing composite dust removal devices attempt to combine the advantages of both, but still have significant limitations: the energy consumption of the Venturi section is still relatively high; the gas-liquid mixing and dust agglomeration process is not sufficient, affecting the overall efficiency; the fiber filter unit lacks an effective anti-clogging mechanism, resulting in insufficient long-term operational stability; the overall system adjustment capability is weak, making it difficult to adapt to changing operating conditions; at the same time, the design of the circulating water system is crude, which can easily lead to water waste or increased secondary treatment load.

[0004] Therefore, the present invention provides a turbulence-enhanced high-efficiency and energy-saving wet dust removal device, which has the advantages of low resistance operation, self-cleaning ability, intelligent adjustment and high system integration. Summary of the Invention

[0005] The purpose of this invention is to provide a turbulence-enhanced high-efficiency and energy-saving wet dust removal device to resolve the contradiction between dust removal efficiency, operating energy consumption and maintenance costs in the prior art.

[0006] The specific technical solution adopted by this invention is as follows: A turbulence-enhanced high-efficiency and energy-saving wet dust removal device includes a Venturi condensation unit, a turbulence mixing enhancement unit, a fiber grid condensation filtration unit and a fan connected in sequence along the airflow direction, and is equipped with a washing liquid circulation component. The Venturi condensation unit includes a contraction tube, an adjustable throat, and a diffusion tube connected in sequence. The adjustable throat includes two sections: a rubber hose and a fixed tube. The outer wall of the rubber hose is fitted with a threaded stainless steel cable tie for adjusting the flow cross-sectional area of ​​the throat. The fixed tube is provided with several atomizing nozzles that are connected to the washing liquid circulation assembly. The several atomizing nozzles are distributed in an equiangular circumferential array. The turbulent mixing enhancement unit is connected between the outlet of the diffuser tube and the inlet of the fiber grid condensation filter unit. It is equipped with a static turbulence generator inside, which is used to generate rotation and turbulence in the gas-liquid-solid multiphase flow from the Venturi condensation unit, thereby enhancing the mixing and condensation process. The fiber grid coagulation filtration unit includes a housing and at least one layer of fiber grids disposed within the housing. The fiber grids are elastically installed within the housing, causing them to vibrate under the action of airflow. The washing liquid circulation assembly is provided with a liquid distribution device leading to the fiber grids. The washing liquid circulation assembly includes a storage tank, a water pump, and a first connecting pipeline for conveying the washing liquid in the storage tank to the atomizing nozzle and the liquid distribution device. The storage tank is connected in a through connection with the housing and is located below the fiber grid plate. The storage tank recovers dust-containing liquid from the bottom of the fiber grid coagulation filter unit.

[0007] Preferably, the turbulent mixing enhancement unit includes a first tube connected between the outlet of the diffuser tube and the inlet of the fiber grid coagulation filter unit. The static turbulence generator is installed inside the first tube. The static turbulence generator includes a partition plate disposed inside the first tube. The partition plate has an array of spiral through holes, and the inner diameter of the middle part of the spiral through holes is smaller than the inner diameter of both ends.

[0008] Preferably, the outlet airflow direction of the turbulent mixing enhancement unit is configured to be at a non-perpendicular angle to the surface of the fiber grid plate, and preferably enters the fiber grid coagulation filtration unit tangentially.

[0009] Preferably, the upper end of the housing is provided with a hinged cover plate, the lower surface of the cover plate is fitted with a soft rubber pad, the upper end of the fiber grid plate is installed inside the soft rubber pad, the lower end of the fiber grid plate is placed on the lower surface of the inner wall of the housing through the soft rubber pad, and the cover plate is fixed to the housing by bolts.

[0010] Preferably, the outlet of the fiber grid condensation filter unit is equipped with a demister.

[0011] Preferably, the demister is a baffle plate type demister or a corrugated plate type demister installed at the end of the housing.

[0012] Preferably, a filter is provided at the root of the first connecting pipe, a collection tank is connected through the housing, the collection tank is located directly below the demister, and a second pipe is connected through the collection tank and the liquid storage tank.

[0013] Preferably, the liquid distribution device is a liquid distribution pipe disposed on the top of the housing, the liquid distribution pipe being connected in connection with the first connecting pipe, and the liquid distribution pipe having a plurality of nozzles facing the fiber grid plate; the fiber grid plate is composed of at least one of metal fiber, polymer fiber or glass fiber, and the surface of the fiber is treated with hydrophobic modification.

[0014] The technical effects achieved by this invention are as follows: The dust removal efficiency is significantly improved, especially in handling fine dust: the device employs a two-stage pretreatment process—primary condensation via Venturi and secondary enhanced condensation via static turbulent flow—ensuring that fine dust particles, such as PM2.5, are fully wetted and effectively agglomerated into larger particles before entering the main filtration unit. Subsequent deep filtration using fiber grids, combining tangential air intake and forced vibration, achieves extremely high capture efficiency for fine particles through a synergistic effect of inertial collision, interception, and dynamic surface renewal, thus solving the problem of poor performance of traditional fiber grid dust collectors for fine dust.

[0015] The system boasts low operating resistance and significantly reduced energy consumption: First, the unique adjustable throat design allows for optimization of the throat velocity based on actual dust load, avoiding unnecessary energy consumption. Second, the static turbulence generator creates strong turbulence under low resistance conditions, replacing the high-energy-consuming method of simply increasing the Venturi throat velocity to enhance mixing. Furthermore, the elastic vibrating fiber grid and hydrophobic modified fibers effectively prevent filter bed caking, maintaining low filtration resistance over the long term. All these factors combined ensure highly efficient dust removal while significantly reducing fan energy consumption, achieving a balance between high efficiency and energy saving.

[0016] Stable and reliable operation with strong anti-clogging capabilities: The elastic installation and forced vibration of the fiber grid plates constitute a self-cleaning mechanism, continuously shaking off adhering substances; the hydrophobic modification of the fiber surface makes the water film morphology easier to renew, and dust is less likely to adhere and clump; the pre-filtration and zoned collection design in the washing liquid circulation system maintains the relative cleanliness of the circulating liquid. These measures work together to fundamentally alleviate the common pain points of filter media clogging and frequent maintenance in wet dust collectors, ensuring stable operation of the device under long-term, high-load conditions.

[0017] Intelligent and convenient operation and maintenance, with strong adaptability: The adjustable design of the adjustable throat and static turbulence generator allows the device to flexibly adapt to changes in inlet concentration, particle size distribution, and airflow, achieving optimized operation. The fiber grid can be quickly disassembled and assembled via a hinged cover, greatly simplifying the inspection, cleaning, and replacement process of the core filter elements, reducing maintenance costs and downtime.

[0018] The system boasts high integration, economic efficiency, and reliability: It modularly integrates multi-stage purification, enhanced mixing, liquid membrane filtration, gas-liquid separation, and liquid recycling functions, resulting in a compact structure. Employing mature and reliable terminal units such as baffle / corrugated plate demisters, and featuring a highly efficient closed-loop water circulation system, it improves resource utilization, reduces wastewater discharge, and lowers reliance on subsequent treatment facilities, resulting in a more advantageous total lifecycle cost.

[0019] In summary, through a series of innovations in structure, materials, and system integration, this invention successfully integrates the advantages of high dust removal efficiency, low operating energy consumption, strong anti-clogging ability, easy maintenance and operation, and high operational reliability, providing a high-performance and economical wet dust removal solution for dust control in industries such as mining, metallurgy, and building materials. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a turbulence-enhanced high-efficiency and energy-saving wet dust removal device according to the present invention; Figure 2 This is a schematic diagram of the main structure of a turbulence-enhanced high-efficiency and energy-saving wet dust removal device according to the present invention; Figure 3 This is a front view of the internal perspective of the structure of a turbulence-enhanced high-efficiency and energy-saving wet dust removal device according to the present invention; Figure 4 This is an internal perspective view of the overall structure of the Chinese Tully condensing unit of this invention; Figure 5 This is an internal perspective view of the overall structure of the turbulent mixing enhancement unit in this invention; Figure 6 This is an internal perspective view of the overall structure of the fiber grid coagulation filtration unit in this invention.

[0021] The attached diagram lists the components represented by each number as follows: 1. Venturi coagulation unit; 2. Turbulent mixing enhancement unit; 3. Fiber grid coagulation filtration unit; 4. Fan; 5. Washing liquid circulation assembly; 6. Demister; 11. Contraction tube; 12. Adjustable throat; 13. Diffuser; 121. Rubber hose; 122. Fixing tube; 123. Threaded stainless steel cable tie; 124. Atomizing nozzle; 21. Static turbulence generator; 22. First pipe; 211. Partition plate; 212. Spiral through hole; 31. Housing; 32. Fiber grid plate; 33. Cover plate; 34. Soft rubber pad; 35. Collection tank; 51. Liquid distribution device; 52. Liquid storage tank; 53. Water pump; 54. First connecting pipe; 55. Filter; 56. Second pipe; 511. Liquid distribution pipe; 512. Nozzle. Detailed Implementation

[0022] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0023] like Figures 1-6As shown, a turbulence-enhanced high-efficiency and energy-saving wet dust removal device includes a Venturi coagulation unit 1, a turbulence mixing enhancement unit 2, a fiber grid coagulation filtration unit 3 and a fan 4 connected in sequence along the airflow direction, and is equipped with a washing liquid circulation component 5. The Venturi condensation unit 1 includes a contraction tube 11, an adjustable throat 12, and a diffuser tube 13 connected in sequence. The adjustable throat 12 includes two sections: a rubber hose 121 and a fixed tube 122. The outer wall of the rubber hose 121 is fitted with a threaded stainless steel cable tie 123 for adjusting the flow cross-sectional area of ​​the throat. The fixed tube 122 is provided with a plurality of atomizing nozzles 124 that are connected to the washing liquid circulation assembly 5. The plurality of atomizing nozzles 124 are distributed in a circular array at equal angles. The turbulent mixing enhancement unit 2 is connected between the outlet of the diffuser 13 and the inlet of the fiber grid condensation filter unit 3. It is equipped with a static turbulence generator 21 to generate rotation and turbulence in the gas-liquid-solid multiphase flow from the Venturi condensation unit 1, thereby enhancing the mixing and condensation process. The fiber grid coagulation filtration unit 3 includes a housing 31 and at least one layer of fiber grid 32 disposed within the housing 31. The fiber grid 32 is disposed within the housing 31 in an elastic installation manner, so that the fiber grid 32 generates forced vibration under the action of airflow. The washing liquid circulation assembly 5 is provided with a liquid distribution device 51 leading to the fiber grid 32. The washing liquid circulation assembly 5 includes a storage tank 52, a water pump 53 and a first connecting pipe 54, which is used to transport the washing liquid in the storage tank 52 to the atomizing nozzle 124 and the liquid distribution device 51. The storage tank 52 is connected to the housing 31 through the housing. The storage tank 52 is located below the fiber grid plate 32. The storage tank 52 recovers the dust-containing liquid from the bottom of the fiber grid coagulation filter unit 3.

[0024] like Figures 1-6As shown, this invention constructs the core system framework of a turbulence-enhanced high-efficiency energy-saving wet dust collector. The device, consisting of a Venturi condensation unit 1, a turbulence mixing enhancement unit 2, and a fiber grid condensation filtration unit 3 connected in series along the airflow direction, forms a three-stage synergistic purification process of "pre-condensation - enhanced mixing - deep filtration". The Venturi condensation unit 1, through its unique adjustable throat 12 (specifically composed of a rubber hose 121, a fixed tube 122, and a threaded stainless steel cable tie 123), achieves stepless adjustment of the throat airflow velocity. Combined with atomizing nozzles 124 distributed in an equiangular circular array, it can optimize atomization and initial condensation effects according to operating conditions. The turbulence mixing enhancement unit 2 has a built-in static turbulence generator 21, specifically designed to generate controllable strong turbulence, further promoting particle collision and growth. The fiber grid condensation filtration unit 3 uses a flexible fiber grid plate 32, which can generate forced vibration in the airflow, achieving dynamic filtration and self-cleaning. The washing liquid circulation component 5, arranged below and to the side of the storage tank 52, directly recovers the dust-laden liquid, achieving closed-loop circulation of the washing liquid and convenient collection of sludge. The entire system, through multi-stage and multi-mechanism synergy, aims to achieve extremely high dust removal efficiency with low system resistance, and is particularly adept at handling fine dust, meeting the requirements for high-efficiency and energy-saving operation.

[0025] Preferably, the turbulent mixing enhancement unit 2 includes a first pipe 22 connected between the outlet of the diffuser 13 and the inlet of the fiber grid coagulation filter unit 3. A static turbulence generator 21 is installed inside the first pipe 22. The static turbulence generator 21 includes a partition 211 disposed inside the first pipe 22. The partition 211 has an array of spiral through holes 212, and the inner diameter of the middle part of the spiral through holes 212 is smaller than the inner diameter of both ends.

[0026] The static turbulence generator 21 consists of a baffle 211 with an array of spiral through-holes 212, the inner diameter of the middle section of the spiral through-holes 212 being smaller than that at both ends. This design creates a unique flow field: when a gas-liquid-solid multiphase flow passes through, the spiral channels force the fluid to rotate, generating swirling shear; simultaneously, the "throat" formed in the middle of the channels causes local acceleration of the fluid, increasing its kinetic energy. The combined effect of these two factors can efficiently and with low energy consumption convert the macroscopic kinetic energy of the fluid into high-intensity, high-frequency microturbulence within a limited pipe space. This enhanced turbulence field greatly increases the collision probability and contact time between fine dust and atomized droplets, promoting more complete coagulation and significantly increasing the effective particle size. This significantly improves the capture capability of the subsequent fiber grid 32 for fine particles, making it a key structure for achieving the "turbulence enhancement" efficiency target.

[0027] Preferably, the outlet airflow direction of the turbulent mixing enhancement unit 2 is configured to be at a non-perpendicular angle to the surface of the fiber grid plate 32, and preferably enters the fiber grid coagulation filter unit 3 tangentially.

[0028] like Figures 1-6 As shown, this invention discloses a fluid dynamic connection method between the outlet of the turbulent mixing enhancement unit 2 and the fiber grid cohesive filtration unit 3, namely, the outlet airflow direction is at a non-perpendicular angle to the surface of the fiber grid plate 32. This design has multiple optimization effects: First, it effectively transfers the rotational and turbulent kinetic energy generated in the preceding stage to the filtration area, maintaining the dynamic activity of the flow field and avoiding sudden dissipation of kinetic energy. Second, the non-perpendicular impact mode, such as tangential, causes the dust-laden airflow to act on the fiber surface in a "sweeping" manner, which, compared to a vertical frontal impact, can more evenly distribute the airflow and dust load, effectively preventing local blockage or penetration of the fiber layer. Most importantly, this angle design significantly enhances the inertial collision effect, making it easier for dust particles to detach from the airflow line and impact the fibers for capture. It also helps to excite continuous vibration of the fiber grid plate 32, thereby helping to reduce and stabilize the overall operating resistance of the system while ensuring high filtration accuracy.

[0029] Preferably, the upper end of the housing 31 is provided with a hinged cover plate 33, a soft rubber pad 34 is installed on the lower surface of the cover plate 33, the upper end of the fiber grid plate 32 is installed in the soft rubber pad 34, and the lower end of the fiber grid plate 32 is placed on the lower surface of the inner wall of the housing 31 through the soft rubber pad 34. The cover plate 33 is fixed to the housing 31 by bolts.

[0030] like Figures 1-6 As shown, this claim specifically discloses a flexible installation scheme for the fiber grid 32 that combines excellent vibration characteristics with convenient maintenance. The upper and lower ends of the fiber grid 32 are elastically constrained and sealed through the hinged cover plate 33 and the soft rubber pad 34 disposed at the bottom of the cover plate 33 and the housing 31. The soft rubber pad 34 provides the necessary flexible support for the fiber grid 32, enabling it to generate effective forced vibration under airflow pulsation. This vibration helps to shake off attached particles, renew the filter surface, and prevent caking. Simultaneously, the hinged cover plate 33, fixed with bolts, forms a quickly openable and clogging maintenance window, allowing the inspection, replacement, or cleaning of the fiber grid 32 to be completed without complex tools, greatly simplifying the maintenance process, shortening downtime, and improving the actual availability and economy of the device.

[0031] Preferably, the outlet of the fiber grid condensation filter unit 3 is provided with a demister 6; the demister 6 is a baffle plate type demister or a corrugated plate type demister installed at the end of the housing 31.

[0032] This invention adds a demister 6 at the end of the purification process. Its core function is to perform final gas-liquid separation, capturing and removing residual tiny droplets that may still be carried in the airflow after purification by the fiber grid condensation filter unit 3. These droplets may contain extremely fine particles that were not completely captured or secondary atomization caused by airflow scouring. The demister 6 ensures the cleanliness of the emitted gas, completely eliminating "moisture emission" or "droplet carryover" phenomena, and meeting stringent emission standards. Simultaneously, it protects downstream equipment such as the fan 4 from water mist corrosion and potential water hammer damage, improving the long-term reliability and stability of the entire system.

[0033] like Figures 1-6 As shown, the present invention further specifies that the preferred type of demister 6 is a baffle plate type or a corrugated plate type demister. Both types are highly efficient inertial separation devices. Their working principle is based on the fact that when the airflow direction changes multiple times, droplets collide with the plate wall due to inertia and agglomerate and grow, ultimately achieving separation by gravity. The advantages of choosing these two mature structures are: they have no moving parts, are structurally robust, and operate reliably; the flow channel design is reasonable, ensuring high demisting efficiency; especially for larger droplets, the additional resistance is relatively low; and they are not prone to clogging, requiring less maintenance. This makes them very suitable as the terminal fine treatment unit of this wet dust removal device, achieving reliable gas-liquid separation with minimal energy consumption.

[0034] Preferably, a filter 55 is provided at the root of the first connecting pipe 54, and a collection tank 35 is connected through the housing 31. The collection tank 35 is located directly below the demister 6, and a second pipe 56 is connected through the collection tank 35 and the liquid storage tank 52.

[0035] This invention provides refined functional additions and system optimizations to the washing liquid circulation component 5. A filter 55 is installed at the root of the first connecting pipe 54. Its core function is to pre-filter the washing liquid before the circulation pump, intercepting large particulate impurities and potentially detached flocculent matter in the water, thereby effectively protecting the water pump 53 and the precision atomizing nozzle 124 from wear and clogging, ensuring spray quality. An independently set collection tank 35 is located directly below the demister 6 and is connected to the liquid storage tank 52 via a second pipe 56, realizing the collection of clean condensate from the demister 6.

[0036] Preferably, the liquid distribution device 51 is a liquid distribution pipe 511 disposed on the top of the housing 31. The liquid distribution pipe 511 is connected to the first connecting pipe 54. The liquid distribution pipe 511 is provided with a plurality of nozzles 512 facing the fiber grid plate 32. The fiber grid plate 32 is composed of at least one of metal fiber, polymer fiber or glass fiber, and the surface of the fiber is treated with hydrophobic modification.

[0037] like Figures 1-6As shown, this invention discloses the layout of the wetting system and the characteristics of the fiber material. The liquid distribution device 51 employs a liquid distribution pipe 511 and multiple nozzles 512 located at the top of the housing 31, achieving uniform spraying of the fiber grid 32 from top to bottom. This ensures that a complete, continuous, and constantly renewing dynamic water film can be formed and maintained on the fiber surface, which is the physical basis for achieving efficient wet filtration and particulate matter interception. Simultaneously, this invention discloses that the fiber surface constituting the fiber grid 32 undergoes hydrophobic modification treatment. This is a key material innovation that alters the surface energy of the fiber, giving it "hydrophobic and dust-attracting" properties. After treatment, water is more likely to form beads or flakes on the fiber surface, rather than completely wetting it. This facilitates the easier washing away of captured dust particles by the water flow, greatly alleviating the clogging problem caused by dust agglomeration in the fiber layer, thereby maintaining low filtration resistance and stable high-efficiency dust removal performance over a long period. This is an important material guarantee for achieving the device's "high-efficiency and energy-saving" goal.

[0038] like Figures 1-6 As shown, the working principle of this invention is as follows: This turbulence-enhanced high-efficiency and energy-saving wet dust removal device operates based on a multi-stage synergistic mechanism of pre-coagulation—turbulence-enhanced mixing—vibration filtration for deep purification. Its complete process is as follows: Dust-laden gas, drawn in by fan 4, first enters Venturi condensation unit 1. The gas is accelerated as it flows through contraction tube 11, reaching its maximum velocity at adjustable throat 12. The flow cross-sectional area of ​​the throat can be infinitely adjusted by tightening or loosening the threaded stainless steel cable ties 123 on the outer wall of the rubber hose 121, thus precisely controlling the throat velocity to adapt to different operating conditions. Simultaneously, washing liquid from washing liquid circulation assembly 5, pressurized by water pump 53, is sprayed into the high-speed airflow through atomizing nozzles 124 arranged in an equiangular circumferential array on fixed tube 122, where it is instantly pulverized into fine droplets. Dust particles and droplets undergo intense inertial collisions and interception within the throat and diffuser tube 13, completing initial wetting and condensation, with some fine particles agglomerating into larger particles.

[0039] Subsequently, the gas-liquid-solid multiphase flow enters the turbulent mixing enhancement unit 2. The core of this unit is the static turbulence generator 21, which consists of a baffle 211 with an array of distributed spiral through-holes 212, where the inner diameter of the central spiral through-hole is smaller than that of the two ends. When the fluid passes through these special channels, it is forced to rotate, accelerated, and subjected to intense shearing, forming a high-intensity turbulent field with a small scale and uniform distribution. Within this region, the collision frequency and contact time between dust particles and droplets are greatly extended, achieving efficient secondary agglomeration of fine dust particles, further increasing the particle size, and creating optimal conditions for final filtration.

[0040] After thorough mixing and condensation, the airflow enters the fiber grid condensation filter unit 3 at a non-perpendicular angle, typically tangentially, to the surface of the fiber grid 32. This unit contains one or more fiber grids 32, which are flexibly installed via a hinged cover plate 33 and a soft rubber pad 34. On one hand, the top-mounted liquid distribution pipe 511 and nozzle 512 continuously spray washing liquid onto the fiber grids 32, forming a dynamic water film on its surface. On the other hand, the tangentially entering rotating turbulent flow impacts the fiber grids 32, not only efficiently capturing the condensed particles through inertial collision and interception effects but also exciting forced vibrations in the fiber grids 32. This vibration, combined with the hydrophobically modified fiber surface, makes it easier for the captured dust to be washed away by the water film, effectively preventing clogging and caking of the filter layer and achieving stable, low-resistance deep filtration.

[0041] The filtered clean gas must pass through a demister 6 before being discharged; such as a baffle plate type or a corrugated plate type. The demister 6 separates the residual tiny droplets entrained in the gas by changing the airflow direction and using inertia, ensuring the complete cleanliness of the discharged gas and protecting the fan 4 from water erosion. The separated droplets and the dust-laden wastewater flowing down the fiber grid 32 are collected together. The dust-laden wastewater directly enters the liquid storage tank 52 located below the fiber grid; while the cleaner condensate separated from the demister drips into a special collection tank 35 and then flows back to the liquid storage tank 52 through the second pipeline 56. The mixed liquid settles in the liquid storage tank 52, and the supernatant is pumped out by the water pump 53 and, under the protection of the root filter 55 of the first connecting pipeline 54, is delivered to the atomizing nozzle 124 and the liquid distribution device 51 respectively, completing the closed-loop circulation of the washing liquid. The sludge settled at the bottom of the liquid storage tank 52 can be cleaned periodically.

[0042] In summary, through structural innovation and process optimization, this device organically integrates Venturi atomization and atomization, static turbulent forced mixing, elastic vibrating fiber grid deep filtration, and high-efficiency gas-liquid separation technologies, achieving efficient collection of dust, especially fine dust below PM2.5, while ensuring long-term low-resistance and energy-saving stable operation of the system.

[0043] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A turbulence-enhanced high-efficiency and energy-saving wet dust removal device, characterized in that: It includes, in sequence along the airflow direction, a Venturi condensation unit (1), a turbulent mixing enhancement unit (2), a fiber grid condensation filtration unit (3), and a fan (4), and is equipped with a washing liquid circulation assembly (5). The Venturi condensation unit (1) includes a contraction tube (11), an adjustable throat (12), and a diffuser (13) connected in sequence. The adjustable throat (12) includes two sections: a rubber hose (121) and a fixed tube (122). The outer wall of the rubber hose (121) is fitted with a threaded stainless steel cable tie (123) for adjusting the flow cross-sectional area of ​​the throat. The fixed tube (122) is provided with a plurality of atomizing nozzles (124) that communicate with the washing liquid circulation assembly (5). The plurality of atomizing nozzles (124) are distributed in a circular array at equal angles. The turbulent mixing enhancement unit (2) is connected between the outlet of the diffuser (13) and the inlet of the fiber grid condensation filter unit (3). It is equipped with a static turbulence generator (21) to generate rotation and turbulence in the gas-liquid-solid multiphase flow from the Venturi condensation unit (1). The fiber grid coagulation filtration unit (3) includes a housing (31) and at least one layer of fiber grid (32) disposed within the housing (31). The fiber grid (32) is disposed within the housing (31) in an elastic installation manner, so that the fiber grid (32) generates forced vibration under the action of airflow. The washing liquid circulation assembly (5) is provided with a liquid distribution device (51) leading to the fiber grid (32). The washing liquid circulation assembly (5) includes a storage tank (52), a water pump (53) and a first connecting pipe (54) for conveying the washing liquid in the storage tank (52) to the atomizing nozzle (124) and the liquid distribution device (51). The storage tank (52) is connected to the housing (31) in a through manner. The storage tank (52) is located below the fiber grid plate (32) and the storage tank (52) recovers the dust-containing liquid from the bottom of the fiber grid coagulation filter unit (3).

2. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 1, characterized in that: The turbulent mixing enhancement unit (2) includes a first tube (22) connected between the outlet of the diffuser tube (13) and the inlet of the fiber grid coagulation filter unit (3). The static turbulence generator (21) is installed inside the first tube (22). The static turbulence generator (21) includes a partition (211) disposed inside the first tube (22). The partition (211) has an array of spiral through holes (212) distributed on it. The inner diameter of the middle part of the spiral through hole (212) is smaller than the inner diameter of both ends.

3. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 2, characterized in that: The outlet airflow direction of the turbulent mixing enhancement unit (2) is configured to be at a non-perpendicular angle to the surface of the fiber grid plate (32).

4. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 3, characterized in that: The upper end of the housing (31) is provided with a hinged cover plate (33), and a soft rubber pad (34) is installed on the lower surface of the cover plate (33). The upper end of the fiber grid plate (32) is installed inside the soft rubber pad (34), and the lower end of the fiber grid plate (32) is placed on the lower surface of the inner wall of the housing (31) through the soft rubber pad (34). The cover plate (33) is fixed to the housing (31) by bolts.

5. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 1, characterized in that: The outlet of the fiber grid condensation filter unit (3) is equipped with a demister (6).

6. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 5, characterized in that: The demister (6) is a baffle plate type demister or a corrugated plate type demister installed at the end of the housing (31).

7. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 6, characterized in that: The first connecting pipe (54) is provided with a filter (55) at its root. The housing (31) is connected to a collection tank (35). The collection tank (35) is located directly below the demister (6). The collection tank (35) and the liquid storage tank (52) are connected to a second pipe (56).

8. The turbulence-enhanced high-efficiency energy-saving wet dust collector according to claim 1, characterized in that: The liquid distribution device (51) is a liquid distribution pipe (511) disposed on the top of the housing (31). The liquid distribution pipe (511) is connected to the first connecting pipe (54). The liquid distribution pipe (511) is provided with a plurality of nozzles (512) facing the fiber grid plate (32). The fiber grid plate (32) is made of at least one of metal fiber, polymer fiber or glass fiber, and the surface of the fiber is hydrophobically modified.

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