Unpowered hood dust removal assembly

Abstract

The invention discloses an unpowered air cap dust removal assembly, and relates to the technical field of dust removal equipment, an unpowered air cap is used as a power part and is optimized and improved, the unpowered air cap dust removal assembly specifically comprises an air cap assembly, a double-step air pipe and a water inlet assembly which are indirectly encircled to form pressure water, the inner wall of an oblique taper pipe is a cambered surface, and the upper end of the oblique taper pipe is rotationally connected with a vertical trumpet-shaped air leakage taper cap; the method comprises a self-operation stage and an active intervention stage, in the self-operation stage, ascending airflow is formed by means of natural airflow and temperature difference, dry dust removal is formed, in the active intervention stage, low-temperature water is injected into a pressure water sump, and the pressure water sump is filled with water. Wet dust removal is achieved through water film adsorption or water drop capture, working condition adaptation is achieved in cooperation with the anemograph at the lower end, unpowered energy-saving operation and efficient dust removal are unified, and the dust fluctuation working condition of a workshop is adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal equipment, in particular to a non-powered hood dust removal assembly. BACKGROUND

[0002] For relatively closed spaces such as workshops with serious dust environment, air circulation is usually used to achieve the purpose of dust removal, such as the related content in CN119097997A and CN102989735A, and from the perspective of energy saving, non-powered hood principle can also be used, and the technical essence is to drive air circulation to complete filtration.

[0003] The key structure is the Venturi pipeline, which is based on the principle of increasing fluid (air) flow rate according to Bernoulli's principle. For non-powered hoods, the specific power output is related to the external air flow rate, the internal and external temperature difference, and the blade design. However, in actual situations, air flow rate and internal and external temperature difference are always relatively variable, and the amount of dust in the internal environment is also difficult to measure and control. Therefore, the "output power" may not be sufficient to achieve the desired dust removal effect.

[0004] In addition, if the amount of dust in the workshop is too large, a single Venturi pipeline design may not be sufficient to meet the requirements of dust removal and separation, and may even cause the entire pipeline to be blocked, affecting subsequent use. To solve this problem, the present application provides a solution. SUMMARY

[0005] The present application provides a non-powered hood dust removal assembly, which is suitable for dust removal in workshops and other environments. The single power output method and dust removal method cannot meet the changes in air flow / temperature difference in the external environment, and cannot adapt to the fluctuation of dust amount in the internal environment.

[0006] The present application can be achieved by the following technical solution: a non-powered hood dust removal assembly, comprising a hood assembly, a double-stage air pipe, and a water inlet assembly. The hood assembly is arranged above the double-stage air pipe, and the hood assembly serves as the power output component of the double-stage air pipe.

[0007] A vertical distribution of inclined cone pipes is arranged in the middle section of the double-stage air pipe. The upper and lower ends of the inclined cone pipe are open, and the cross section of the inclined cone pipe is in the shape of a circular truncated cone. A directional partition plate is fixedly installed between the upper end of the inclined cone pipe and the inner wall of the double-stage air pipe. A pressure water tank matched with the water inlet assembly is formed between the outer wall of the inclined cone pipe, the inner wall of the double-stage air pipe, and the lower side of the directional partition plate. The directional partition plate is arranged below the upper end of the inclined cone pipe.

[0008] Further arrangement is that the inner wall of the inclined conical pipe is arc-shaped, and a vertical vent cap is arranged at the upper end of the inclined conical pipe, and the lower end of the vent cap is rotationally connected with the inner wall of the inclined conical pipe.

[0009] Further arrangement is that the cross section of the vent cap is vertical trumpet-shaped, and an arc-shaped through groove is arranged on the outer wall of the vent cap, and the arc-shaped through grooves are annularly arranged along the center point of the vent cap.

[0010] Further arrangement is that the upper and lower ends of the double-stage air pipe are inverse circular truncated cone-shaped and normal circular truncated cone-shaped, and the middle section of the double-stage air pipe is cylindrical.

[0011] Further arrangement is that the outer diameter of the upper end of the vent cap is larger than that of the upper end of the inclined conical pipe.

[0012] Further arrangement is that a plurality of conical water outlets are arranged on the directional partition plate, the lower end of the conical water outlet is connected with the inside of the pressure water tank, and a buoyancy plug ball is arranged at the upper end of the conical water outlet.

[0013] Further arrangement is that a plurality of pressure movable grooves are annularly arranged on the outer wall of the inclined conical pipe along the center point thereof, the pressure movable grooves are upwardly curved and arc-shaped along the outer curved surface of the inclined conical pipe, and a rubber sheet is attached to the pressure movable grooves.

[0014] Further arrangement is that in the use process including a self-operation stage and an active intervention stage, in the self-operation stage, the vent cap assembly forms an air flow from bottom to top in the double-stage air pipe through the air flow direction and temperature difference in the external environment, and the air flow passes through the inclined conical pipe.

[0015] In the active intervention stage, low-temperature water is injected into the pressure water tank through the water inlet assembly, and the liquid level of the low-temperature water is higher than the arrangement position of the pressure movable groove or the upper surface position of the directional partition plate.

[0016] Further arrangement is that in the active intervention stage, the water inlet assembly is additionally provided with a water injection and drainage limiting action, the liquid level of the low-temperature water in the pressure water tank is changed through the water injection and drainage limiting action, and an anemometer is arranged at the lower end of the double-stage air pipe.

[0017] The present application has the following advantages:

[0018] 1. Combined with Venturi effect, centrifugal separation, gravity settling, unpowered hood, wet adsorption to realize multi-stage dust removal, the inverted circular table section of the double-stage air pipe realizes preliminary inertial separation of dust, the arc inner wall of the inclined cone pipe strengthens the centrifugal force of airflow, promotes dust to adhere to the wall, the horn-shaped structure of the air release cone cap realizes airflow shunting and speed reduction, allowing dust to settle naturally under the action of gravity, the low-temperature water film and water droplets in the active intervention stage can efficiently capture fine dust, forming a synergistic system of "preliminary dust removal + centrifugal dust removal + gravity dust removal + wet dust removal", compared with the traditional single Venturi pipeline dust removal, the dust removal rate is improved, and fine dust escape can be avoided.

[0019] 2. The above content is supplemented by two running states: self-operation and active intervention. The self-operation stage relies completely on natural airflow and internal and external temperature difference driving, without additional energy, and can meet the dust removal needs of the workshop under low dust concentration. When the dust concentration increases suddenly or the external power is insufficient, the active intervention stage is started, low-temperature water is injected through the pressure tank to realize wet dust removal, effectively compensating for the limitations of single dry dust removal, adapting to the dust fluctuation state of the whole production cycle of the workshop, and "amplifying" the airflow acceleration effect of the Venturi pipe by adding the inclined cone pipe, which relieves the limitations of the unpowered hood on the external environment. In the active intervention stage, the low-temperature water in the pressure tank can make the rubber sheet of the pressure active tank produce curved deformation, further optimizing the airflow guiding path, and the pressure generated by the low-temperature water can assist in enhancing the airflow power, solving the problem of "insufficient power" when the external airflow is weak, and ensuring the stability of the equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, a brief introduction will be given below to the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A structure diagram of an unpowered hood dust removal assembly according to the present application is shown in the figure.

[0022] Figure 2 A structure diagram of an unpowered hood dust removal assembly according to the present application is shown in the figure. Figure 1

[0023] Figure 3 A structure diagram of an unpowered hood dust removal assembly according to the present application is shown in the figure. Figure 2

[0024] Figure 4 A structure diagram of an unpowered hood dust removal assembly according to the present application is shown in the figure. Figure 3

[0025] Figure 5 ​​​This is a schematic diagram of the oblique conical tube and the vent cone cap in this invention.

[0026] In the diagram: 1. Vent assembly; 2. Double-stage duct; 201. Pressure water chamber; 3. Water inlet assembly; 4. Directional baffle; 5. Inclined cone pipe; 6. Vent cone cap; 7. Buoyancy plug; 8. Conical water inlet; 9. Pressure movable groove. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: For dust removal processes in workshop environments, a single power output method and dust removal method are insufficient to address changes in airflow / temperature differences in the external environment, and cannot adapt to fluctuations in dust levels within the internal environment. The following technical solution is proposed to address this issue:

[0029] Reference Figures 1-5 The dust removal assembly without power in this embodiment includes a dust cap assembly 1, a double-stage air duct 2 and a water inlet assembly 3. The dust cap assembly 1 is located above the double-stage air duct 2 and serves as the power output component of the double-stage air duct 2.

[0030] A vertically distributed inclined cone tube 5 is provided in the middle section of the double-stage duct 2. Both the upper and lower ends of the inclined cone tube 5 are open, and the cross-section of the inclined cone tube 5 is frustum-shaped. A directional baffle 4 is fixedly installed between the upper part of the inclined cone tube 5 and the inner wall of the double-stage duct 2. A pressure water chamber 201 matching the water inlet assembly 3 is formed between the outer wall of the inclined cone tube 5, the inner wall of the double-stage duct 2, and the lower side of the directional baffle 4. The directional baffle 4 is positioned below the upper end of the inclined cone tube 5. The inner wall of the inclined cone tube 5 is arc-shaped, and a vertically arranged vent cone cap 6 is provided at the upper end of the inclined cone tube 5. The lower end of the vent cone cap 6 is rotatably connected to the inner wall of the inclined cone tube 5.

[0031] Basic principle: A simple explanation of the dust removal process: While a structure like a fan drives the flow of gas, this invention uses a wind cap structure as a power source. The airflow is generated through its blade structure design, the airflow direction in the external environment, and the temperature difference between the internal and external environments. If the entire structure is placed on the roof of the workshop, the airflow from bottom to top can be generated using the non-powered wind cap assembly.

[0032] The double-stage duct 2 in this invention is essentially a Venturi duct. Its core principle is Bernoulli's theorem and the continuity equation. When the fluid (gas) flows through the constriction section of the duct, the flow velocity increases and the static pressure decreases. In the expansion section, the flow velocity decreases and the static pressure recovers, thus achieving the dust removal function.

[0033] The present invention addresses the rather stringent and singular condition of "generating power" based on two factors: the direction of airflow in the external environment and the temperature difference between the internal and external environments. For example, if the airflow direction in the external environment is low, the resulting airflow power is poor, making it difficult to generate a stable airflow direction. To address this, the present invention adds an inclined cone tube 5 to the middle section (throat) of the double-stage duct 2, with the aim of "enlarging" the effect of the venturi tube.

[0034] Example 2: The technical process in Example 1 relies too heavily on the airflow velocity and temperature difference between the outside and inside environments, resulting in significant fluctuations during actual operation. Therefore, this example provides supplementary explanations regarding the inclined cone tube structure:

[0035] The cross-section of the vent cone 6 is vertically flared, and an arc-shaped through groove is provided on the outer wall of the vent cone 6. The arc-shaped through groove is arranged in a ring array along the center point of the vent cone 6. The upper and lower ends of the double-stage air duct 2 are inverted frustum and right frustum, respectively, and the middle section of the double-stage air duct 2 is cylindrical. The outer diameter of the upper part of the vent cone 6 is larger than the outer diameter of the upper part of the inclined cone pipe 5. Multiple conical water inlets 8 are provided on the directional baffle 4. The lower end of the conical water inlet 8 is connected to the interior of the pressure water chamber 201, and a buoyancy blocking ball 7 is provided on the upper part of the conical water inlet 8. Multiple pressure movable grooves 9 are arranged in a ring array along the center point of the outer wall of the inclined cone pipe 5. The pressure movable grooves 9 are curved upward along the outer curved surface of the inclined cone pipe 5, and rubber sheets are attached to the pressure movable grooves 9.

[0036] Solution Description: Refer to Figure 4 The operation of this invention is explained as follows: The airflow is generated by the self-rotation of the wind cap assembly 1. This airflow is slowed down by the inclined cone tube 5. As the airflow exits from the upper end of the inclined cone tube 5, it blows directly onto the vent cone 6. The inclined surface design of the outer wall of the vent cone 6 disperses the air in a "trumpet diffusion" shape. Its key purpose is to divert and slow down the airflow. Under gravity, the dust falls naturally. Furthermore, the diameter difference between the vent cone 6 and the upper part of the inclined cone tube 5 is further limited, preventing dust from flowing back into the inclined cone tube 5. The following is a detailed explanation:

[0037] The wind cap assembly 1 captures natural airflow from the external environment (such as wind from the workshop roof) and the temperature difference between the inside and outside environments (the temperature difference between the heat generated inside the workshop due to production and the cold air outside), driving its blades to rotate. This rotation creates negative pressure inside the double-stage duct 2, which in turn guides the dust-laden air in the workshop into the duct from the lower end (inverted frustum-shaped inlet) of the double-stage duct 2, forming a stable airflow from bottom to top. The dust-laden airflow first passes through the lower inverted frustum section of the double-stage duct 2. As the duct cross-section gradually contracts (transitioning from an inverted frustum to a cylindrical shape in the middle section), according to the Venturi principle, the airflow velocity gradually increases and the static pressure decreases. Some larger and denser dust particles separate from the airflow under inertia and initially settle on the inner wall or bottom collection area of ​​the lower end of the double-stage duct 2. The arc-shaped through groove set on the vent cone cap 6 is also mainly utilized to make the airflow form a spiral upward diffusion flow.

[0038] After initial dust removal, the airflow continues to flow upwards, entering the cylindrical area in the middle section of the double-stage duct 2, and passing through the inclined cone duct 5 (with a frustum-shaped cross-section and an arc-shaped inner wall). The frustum structure of the inclined cone duct 5 further narrows the airflow channel, increasing the airflow velocity again. At the same time, the arc-shaped inner wall guides the airflow to spiral upwards along the wall, enhancing the centrifugal force of the airflow and causing more dust particles to approach and adhere to the inner wall of the inclined cone duct 5. When the airflow flows out from the upper opening of the inclined cone duct 5, it directly impacts the vent cone 6 (with a vertical trumpet-shaped cross-section and a rotating connection between the lower end and the inner wall of the inclined cone duct 5). After being blocked by the trumpet-shaped outer wall, the airflow is divided in a "trumpet diffusion" pattern, and the flow velocity is significantly reduced. During this process, the dust particles in the airflow separate from the airflow due to gravity, and some dust slides down the outer wall of the vent cone 6 to the gap between the outer wall of the inclined cone duct 5 and the inner wall of the double-stage duct 2, completing the secondary dust removal.

[0039] The clean airflow after secondary dust removal continues to flow upward and is eventually discharged to the external environment through the wind cap assembly 1. The separated dust, under the action of gravity, slowly settles to the upper position of the directional baffle 4 along the inner wall of the double-stage duct 2 or the outer wall of the inclined cone duct 5, awaiting subsequent cleaning. The entire process relies on natural airflow and temperature difference for driving, without the need for additional electricity or power equipment, meeting energy-saving requirements. It is especially suitable for dust removal scenarios in long-term workshops, which can significantly reduce energy consumption and operating costs. When the dust concentration in the workshop is low (such as a small amount of suspended dust generated in daily production), the Venturi effect of the double-stage duct and the synergistic effect of the inclined cone duct and the vent cone can achieve efficient dust removal. The dust content of the discharged airflow can meet the conventional environmental protection standards, and the dust removal effect will not decrease due to insufficient power. For small fluctuations in the airflow velocity and temperature difference in the external environment, the blade design of the wind cap assembly 1 and the structure of the double-stage duct can buffer the impact of fluctuations to a certain extent, maintain the basic stability of the airflow, and ensure that the dust removal process is not interrupted.

[0040] Example 3: Supplementary explanation of the overall operation process based on Examples 1 and 2:

[0041] The process of use includes a self-operation phase and an active intervention phase. In the self-operation phase, the wind cap assembly 1 forms an airflow from bottom to top in the double-stage air duct 2 based on the airflow direction and temperature difference in the external environment, and the airflow passes through the inclined cone duct 5.

[0042] During the active intervention phase, low-temperature water is injected into the pressure water tank 201 through the water inlet component 3. The low-temperature water level is higher than the setting position of the pressure active tank 9 or higher than the upper surface position of the directional baffle 4. During the active intervention phase, the water inlet component 3 is equipped with a water injection and drainage restriction action to change the water level height of the low-temperature water in the pressure water tank 201. An anemometer is installed at the lower end of the double-stage air duct 2.

[0043] Solution Description: This explanation is based on Examples 1 and 2. During actual operation, there are fluctuations in multiple elements. Under normal conditions, a self-operating phase occurs. When the dust concentration in the workshop is high (e.g., a large amount of dust is generated during peak production periods), or when the external airflow is weak or the temperature difference is small, resulting in insufficient power for the self-operating phase, an active intervention phase is initiated. The specific process is as follows:

[0044] Low-temperature water is injected into the pressure water chamber 201 (formed by the outer wall of the inclined cone pipe 5, the inner wall of the double-stage air duct 2, and the lower side of the directional baffle 4) through the water inlet assembly 3. The water injection volume is controlled according to the dust concentration and airflow dynamics to make the low-temperature water level reach one of the following two states:

[0045] State 1: The liquid level is higher than the setting position of the pressure active tank 9 (the upward curved arc groove of the annular array on the outer wall of the inclined cone tube 5, with rubber sheets attached). At this time, the water in the pressure water tank 201 permeates through the gap of the rubber sheet in the pressure active tank 9 to the inner wall of the inclined cone tube 5, forming a water film on the wall surface. The essence is: using the condensation phenomenon, water droplets are formed on the curved surface of the rubber sheet corresponding to one side of the inclined cone tube 5 (the water vapor in the workshop air naturally condenses). When the dust-laden airflow passes through the inclined cone tube 5, the dust particles are adsorbed after contacting the water film and slide down the wall surface with the water film into the pressure water tank 201, completing the wet dust removal.

[0046] State 2: The liquid level is higher than the upper surface of the directional baffle 4. At this time, the water in the pressure water tank 201 permeates upward through the conical water inlet 8 on the directional baffle 4 (the lower end of which is connected to the pressure water tank 201), pushing the buoyancy block ball 7 (placed on the upper end of the conical water inlet 8) to float upward. When the buoyancy block ball 7 floats to a certain height, the conical water inlet 8 partially opens. When the airflow comes into contact with the water droplets and water film, the dust particles are captured, realizing wet dust removal. Under the condition of dust gravity, the dust naturally settles in the pressure water tank 201. At the same time, the low temperature water forms a certain pressure in the pressure water tank 201, causing the rubber sheet to deform and expand into the inclined cone tube 5 to produce a curved surface, which can enhance the airflow guiding effect of the inclined cone tube 5.

[0047] By adding a water inlet component 3 to restrict water injection and drainage, the liquid level of room temperature water in the pressure water tank 201 is changed. For example, when the dust concentration increases further, the water injection volume is increased to raise the liquid level, expand the water film coverage area or increase the number of water droplets, and improve the dust removal efficiency. When the dust concentration decreases or the external airflow power recovers, the water injection volume is reduced or drainage is carried out to lower the liquid level, avoiding water waste. The low temperature water in the overall water injection and drainage restriction action is in a closed-loop circulation state. At the same time, the anemometer installed at the lower end of the double-stage duct 2 monitors the airflow speed in the duct in real time and adjusts the water injection and drainage frequency and volume according to the wind speed data to ensure that the airflow speed matches the water level height, avoiding excessive airflow resistance due to excessive water level or affecting the dust removal effect due to excessive water level.

[0048] During the active intervention phase, in addition to wet dust removal (water film adsorption, water droplet capture), the Venturi effect of the two-stage duct and the diversion and deceleration dust removal of the inclined cone and the vent cone are still carried out simultaneously. The dust-laden airflow first passes through the lower inverted truncated cone section for preliminary dust removal, and then enters the inclined cone 5 to contact the water film and water droplets to complete wet dust removal (three-stage dust removal). Subsequently, it is diverted and decelerated by the vent cone to complete secondary dust removal, and finally the clean airflow is discharged, forming a multi-stage synergistic mode of "preliminary dust removal + wet dust removal + secondary dust removal".

[0049] In summary, this invention utilizes a non-powered wind cap as the power source and optimizes it accordingly. Specifically, it includes a wind cap assembly, a two-stage duct, and a water inlet assembly, which indirectly enclose and form pressurized water. The inner wall of the inclined cone tube is arc-shaped, and the upper end is rotatably connected to a vertical horn-shaped vent cone cap. The directional baffle has a conical water inlet with a buoyancy plug. The outer wall of the inclined cone tube has an annular array of upwardly curved pressure grooves with attached rubber sheets. It includes two operating stages: self-operation and active intervention. In the self-operation stage, it relies on natural airflow and temperature difference to form an upward airflow, resulting in dry dust removal. In the active intervention stage, low-temperature water is injected into the pressurized water chamber, and wet dust removal is achieved through water film adsorption or water droplet capture. Combined with the lower anemometer, it achieves working condition adaptation. This invention achieves the unity of non-powered energy-saving operation and high-efficiency dust removal, adapting to fluctuating dust conditions in the workshop.

[0050] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A non-powered dust collector assembly, characterized in that, It includes a wind cap assembly (1), a double-stage air duct (2) and a water inlet assembly (3). The wind cap assembly (1) is located above the double-stage air duct (2) and serves as the power output component of the double-stage air duct (2). The middle section of the double-stage duct (2) is provided with vertically distributed oblique cone pipes (5). The oblique cone pipes (5) are open at both ends and have a frustum-shaped cross section. An directional baffle (4) is fixedly installed between the upper part of the oblique cone pipe (5) and the inner wall of the double-stage duct (2). A pressure water chamber (201) matching the water inlet assembly (3) is formed between the outer wall of the oblique cone pipe (5), the inner wall of the double-stage duct (2), and the lower side of the directional baffle (4). The directional baffle (4) is positioned lower than the upper end of the oblique cone pipe (5).

2. The non-powered wind-driven dust collector assembly according to claim 1, characterized in that, The inner wall of the inclined cone tube (5) is arc-shaped, and a vertically arranged vent cone cap (6) is provided at the upper end of the inclined cone tube (5). The lower end of the vent cone cap (6) is rotatably connected to the inner wall of the inclined cone tube (5).

3. The non-powered wind-driven dust collector assembly according to claim 2, characterized in that, The cross-section of the vent cone cap (6) is vertically flared, and an arc-shaped through groove is provided on the outer wall of the vent cone cap (6). The arc-shaped through groove is arranged in a ring array along the center point of the vent cone cap (6).

4. The non-powered wind-driven dust collector assembly according to claim 3, characterized in that, The upper and lower ends of the double-stage duct (2) are inverted frustum and right frustum, respectively, and the middle section of the double-stage duct (2) is cylindrical.

5. The non-powered wind-driven dust collector assembly according to claim 4, characterized in that, The outer diameter of the upper part of the vent cone cap (6) is greater than the outer diameter of the upper part of the oblique cone tube (5).

6. The non-powered wind-driven dust collector assembly according to claim 5, characterized in that, The directional baffle (4) has multiple conical water inlets (8), the lower end of the conical water inlet (8) is connected to the interior of the pressure water tank (201), and the upper part of the conical water inlet (8) is provided with a buoyancy block ball (7).

7. The non-powered wind-driven dust collector assembly according to claim 6, characterized in that, Multiple pressure grooves (9) are arranged in a ring array along the center point on the outer wall of the oblique tapered tube (5). The pressure grooves (9) are curved upward along the outer surface of the oblique tapered tube (5), and rubber sheets are attached to the pressure grooves (9).

8. The non-powered wind-driven dust collector assembly according to claim 7, characterized in that, The process of use includes a self-operation phase and an active intervention phase. In the self-operation phase, the wind cap assembly (1) forms an airflow from bottom to top in the double-stage duct (2) through the airflow direction and temperature difference in the external environment, and the airflow passes through the inclined cone tube (5). During the active intervention phase, low-temperature water is injected into the pressure water tank (201) through the water inlet assembly (3). The low-temperature water level is higher than the setting position of the pressure active tank (9) or higher than the upper surface position of the directional baffle (4).

9. A non-powered dust collector assembly according to claim 8, characterized in that, During the active intervention phase, the water inlet assembly (3) is equipped with a water inlet and drainage restriction action to change the liquid level of the low temperature water in the pressure water tank (201). An anemometer is installed at the lower end of the double-stage air duct (2).

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