A multi-stage filtered air drying canister

Abstract

This utility model relates to the technical field of compressed air purification equipment and discloses a multi-stage filtered air drying tank, including a tank body. An air inlet is fixedly installed on the upper surface of the tank body, and a first filter plate is fixedly installed inside the air inlet. An air outlet is fixedly installed at the bottom of the tank body. The tank body is equipped with a multi-stage filtration mechanism, and the filter end of the multi-stage filtration mechanism is located inside the tank body. The multi-stage filtration mechanism of this utility model achieves the effect of filtering air, avoiding the situation in the prior art where the use of a single cyclone separator is difficult to effectively remove oil mist and steam, which may lead to the impact on pneumatic components and equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of compressed air purification equipment, specifically a multi-stage filtered air drying tank. Background Technology

[0002] Multi-stage filtered air dryers are devices that integrate multiple functions such as air purification, drying, and impurity separation. By combining different filter media and drying technologies, they can efficiently remove moisture, oil mist, and dust particles from the air. These devices are widely used in fields with stringent air quality requirements, such as pharmaceuticals, electronics, and automobile manufacturing, and can meet the demand for dry and clean air in high-precision production environments.

[0003] Traditional multi-stage filtered air dryers, when filtering air, often struggle to effectively remove oil mist and vapor using a single cyclone separator, which can negatively impact pneumatic components and equipment. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage filtered air dryer that solves the problem that traditional multi-stage filtered air dryers, when using a single cyclone separator, cannot effectively remove oil mist and steam, which can lead to damage to pneumatic components and equipment.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a multi-stage filtered air drying canister, including a canister body. An air inlet is fixedly installed on the upper surface of the canister body, a first filter plate is fixedly installed inside the air inlet, and an air outlet is fixedly installed at the bottom of the canister body. The canister body is provided with a multi-stage filtration mechanism, and the filter end of the multi-stage filtration mechanism is located inside the canister body.

[0006] Furthermore, the multi-stage filtration mechanism includes a cyclone separation chamber, which is fixedly installed on the inner top of the tank. One end of the cyclone separation chamber is connected to the interior of the air inlet, and a guide plate is fixedly installed inside the cyclone separation chamber.

[0007] Furthermore, a first drain outlet is fixedly installed at the bottom of the cyclone separation chamber, and a second filter plate is fixedly installed on the inner wall of the tank.

[0008] Furthermore, a coagulation filter chamber is fixedly installed on the inner wall of the tank, and two sets of coagulation filter elements are fixedly installed inside the coagulation filter chamber.

[0009] Furthermore, a second drain outlet is fixedly installed at the bottom of the condensation filtration chamber, and a third filter plate is fixedly installed on the inner wall of the tank.

[0010] Furthermore, an adsorption drying chamber is fixedly installed on the inner wall of the tank, and several desiccants are fixedly installed inside the adsorption drying chamber. The bottom of the adsorption drying chamber is connected to one end of the air outlet.

[0011] This utility model has the following beneficial effects: (1) In this invention, air enters the cyclone separation chamber. Under the guidance of the guide plate, the gas rotates at high speed, using centrifugal force to throw most of the liquid water and heavier oil droplets and particles in the air toward the chamber wall. These droplets gather on the wall and flow down the wall, eventually being discharged through the first drain outlet at the bottom. After this stage, most of the liquid pollutants are separated. The gas, after preliminary drying, continues to flow downwards and passes through the second filter plate, further filtering out medium-sized particles. Subsequently, the gas enters the condensation filter chamber, whose internal condensation filter element is made of special fiber material, which can efficiently capture tiny mist-like oil droplets and water droplets in the air. These tiny droplets collide and condense on the filter element fibers, eventually gathering into larger droplets, which settle to the bottom of the chamber under gravity and are discharged through the second drain outlet. This stage mainly removes fine aerosol-like oil and water. After the first two stages After processing, liquid water and small droplets in the gas have been largely removed, but water vapor is still present. The gas passes upward or horizontally through the third filter plate for a final stage of solid particulate protection filtration. Finally, the gas enters the adsorption drying chamber, where the desiccant filled with it has extremely high surface porosity and hygroscopicity. Through physical adsorption, it firmly adsorbs the residual water vapor molecules in the gas, significantly lowering the dew point of the compressed air and achieving deep drying. This achieves the effect of air filtration, avoiding the situation where existing technologies using a single cyclone separator are unable to effectively remove oil mist and vapor, which could lead to damage to pneumatic components and equipment.

[0012] (2) This utility model uses a multi-stage synergistic treatment scheme of cyclone separation chamber, condensation filtration chamber and adsorption drying chamber to remove pollutants of different shapes and sizes step by step and in a targeted manner, and finally outputs pure compressed air with high air quality and low dew point, which greatly protects downstream pneumatic equipment.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the multi-stage filtration mechanism of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the multi-stage filtration mechanism of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the multi-stage filtration mechanism of this utility model. Figure 3 ; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Tank; 2. Air inlet; 3. First filter plate; 4. Air outlet; 5. Multi-stage filtration mechanism; 501. Cyclone separation chamber; 502. Guide plate; 503. First drain outlet; 504. Second filter plate; 505. Coagulation filter chamber; 506. Coagulation filter element; 507. Second drain outlet; 508. Third filter plate; 509. Adsorption drying chamber; 510. Desiccant. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 As shown, this utility model is a multi-stage filtered air drying canister, including a canister body 1, an air inlet 2 fixedly installed on the upper surface of the canister body 1, a first filter plate 3 fixedly installed inside the air inlet 2, an air outlet 4 fixedly installed at the bottom inside the canister body 1, and a multi-stage filtration mechanism 5 provided inside the canister body 1, with the filter end of the multi-stage filtration mechanism 5 located inside the canister body 1. Air inlet 2: It adopts a flange connection structure, which facilitates sealing and docking with external air source pipelines. A protective net can be installed at the inlet to prevent large foreign objects from accidentally entering. First filter plate 3: It is made of stainless steel sintered mesh or multi-layer metal filter mesh composite pressing. It has a large pore size and is mainly used to intercept solid particles with a particle size greater than 50μm, such as dust and rust, as the primary protective barrier of the entire system. Outlet 4: Located at the bottom of the tank, it adopts a bottom outlet method, which facilitates the natural settling of the separated liquid without being carried out. A check valve can be built into the interface to prevent backflow.

[0018] The multi-stage filtration mechanism 5 includes a cyclone separation chamber 501. The cyclone separation chamber 501 is fixedly installed on the top of the inner part of the tank body 1. One end of the cyclone separation chamber 501 is connected to the inside of the air inlet 2. A guide plate 502 is fixedly installed inside the cyclone separation chamber 501. Cyclone Separator 501: Its cavity is designed as a tangential air intake volute structure, made of high-strength corrosion-resistant aluminum alloy or stainless steel. The inner wall is precision machined to achieve low surface roughness, which is conducive to liquid polymerization and downward flow. Deflector 502: It is a spiral blade made of metal sheet by precision stamping. Its specific spiral angle can guide the incoming airflow to generate a stable and high-speed rotating vortex, which is the core component for generating centrifugal force.

[0019] A first drain outlet 503 is fixedly installed at the bottom of the cyclone separation chamber 501, and a second filter plate 504 is fixedly installed on the inner wall of the tank body 1. First drain outlet 503: Usually connected to an automatic drainer or manual drain valve, which can promptly and automatically discharge the separated liquid water and oil mixture from the system to prevent secondary vaporization or accumulation; The second filter plate 504 uses fiber felt or resin-impregnated paper filter media with a gradient density design. The filtration accuracy is between 10-25μm. It has strong pressure resistance and can effectively filter out medium-sized particles that remain in the air after cyclone separation.

[0020] A coagulation filter chamber 505 is fixedly installed on the inner wall of the tank body 1, and two sets of coagulation filter elements 506 are fixedly installed inside the coagulation filter chamber 505. 505 condensation filter chamber: It is an independent sealed chamber made of impact-resistant engineering plastic or stainless steel. It has an internal support frame to ensure stable installation of the filter element and is designed with an airflow distribution plate to make the air pass through the filter element evenly. 506 condensing filter element: It uses borosilicate glass fiber or multi-layer composite polymer fiber as the main filter medium. It has extremely high porosity and fine fiber mesh structure. Its filtration mechanism includes collision, diffusion and interception. It can efficiently condense and capture oil mist and tiny water droplets larger than 0.1μm. The outer layer of the filter element is usually coated with liquid water resistant coating.

[0021] A second drain outlet 507 is fixedly installed at the bottom of the condensation filtration chamber 505, and a third filter plate 508 is fixedly installed on the inner wall of the tank body 1. Second drain outlet 507: Also connected to an automatic drain device, used to collect and drain the tiny droplets that gather from the surface of the condensate filter element, ensuring that the condensate is not carried away by the airflow again; The third filter plate 508 is typically made of ultra-fine fiber or microporous polytetrafluoroethylene (PTFE) membrane filter media, with a filtration accuracy of 1-3μm. As the final guarantee for solid particulate matter filtration, it can capture any extremely fine particles that may penetrate the previous filter, ensuring that the downstream desiccant is not contaminated.

[0022] An adsorption drying chamber 509 is fixedly installed on the inner wall of the tank 1. Several desiccants 510 are fixedly installed inside the adsorption drying chamber 509. The bottom of the adsorption drying chamber 509 is connected to one end of the air outlet 4. Adsorption drying chamber 509: Designed as a cylindrical structure with uniform airflow distribution, with porous baffles or filters inside to prevent desiccant powder loss, and the chamber must be pressure-resistant and resistant to dry environment; Desiccant 510: Usually high-performance activated alumina or molecular sieve, with extremely high specific surface area and microporous structure, has a strong adsorption capacity for water vapor. Different types and particle sizes of desiccants can be selected according to dew point requirements, and the filling is tight and full.

[0023] In operation, moist compressed air containing a large amount of liquid water, oil droplets, and solid impurities first enters through inlet 2 and undergoes initial interception by the first filter plate 3, removing larger particles. The air then enters the cyclone separator 501, where, guided by the guide plate 502, the gas rotates at high speed, using centrifugal force to throw most of the liquid water and heavier oil droplets and particles towards the chamber wall. These droplets accumulate on the wall and flow down, eventually being discharged through the first drain outlet 503 at the bottom. After this stage, most of the liquid contaminants are separated. The pre-dried gas continues to flow downwards, passing through the second filter plate 504, which further filters out medium-sized particles. The gas then enters the condensation filter chamber 505, where the condensing filter element 506... Made of special fiber materials, it can efficiently capture tiny mist-like oil and water droplets in the air. These tiny droplets collide and agglomerate on the filter element fibers, eventually merging into larger droplets, which settle to the bottom of the chamber under gravity and are discharged through the second drain port 507. This stage mainly removes fine aerosol oil and water. After the first two stages of treatment, the liquid water and small droplets in the gas have been basically removed, but water vapor is still present. The gas passes upward or horizontally through the third filter plate 508 for the final solid particulate matter protection filtration. Finally, the gas enters the adsorption drying chamber 509. The desiccant 510 filled in the chamber has extremely high surface porosity and hygroscopicity. It can firmly adsorb the residual water vapor molecules in the gas through physical adsorption, which significantly reduces the dew point of the compressed air and achieves the purpose of deep drying. This achieves the effect of filtering the air and avoids the situation in the existing technology where the use of a single cyclone separator is difficult to effectively remove oil mist and vapor, which may lead to the impact on pneumatic components and equipment. Finally, clean, dry compressed air is output from the bottom outlet 4 and supplied to pneumatic equipment.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. 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 this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage filtered air drying canister, comprising a canister body (1), wherein an air inlet (2) is fixedly installed on the upper surface of the canister body (1), a first filter plate (3) is fixedly installed inside the air inlet (2), and an air outlet (4) is fixedly installed at the inner bottom of the canister body (1), characterized in that: The tank (1) is equipped with a multi-stage filtration mechanism (5) inside, and the filtration end of the multi-stage filtration mechanism (5) is located inside the tank (1). The multi-stage filtration mechanism (5) includes a cyclone separation chamber (501). The cyclone separation chamber (501) is fixedly installed on the inner top of the tank (1). One end of the cyclone separation chamber (501) is connected to the interior of the air inlet (2). A guide plate (502) is fixedly installed inside the cyclone separation chamber (501). The bottom of the cyclone separation chamber (501) is fixedly installed with a first drain outlet (503), and the inner wall of the tank (1) is fixedly installed with a second filter plate (504). The inner wall of the tank (1) is fixedly installed with a coagulation filter chamber (505), and two sets of coagulation filter elements (506) are fixedly installed inside the coagulation filter chamber (505). The bottom of the coagulation filtration chamber (505) is fixedly installed with a second drain outlet (507), and the inner wall of the tank (1) is fixedly installed with a third filter plate (508).

2. The multi-stage filtered air drying canister according to claim 1, characterized in that: An adsorption drying chamber (509) is fixedly installed on the inner wall of the tank (1). Several desiccants (510) are fixedly installed inside the adsorption drying chamber (509). The bottom of the adsorption drying chamber (509) is connected to one end of the air outlet (4).

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