A dust filtration net and a preparation method thereof, and a dust filter and a use method thereof

Abstract

The application discloses a dust filtering net and a preparation method thereof, and a dust filter and a use method thereof. The dust filtering net has air permeability and is composed of a first net part in the middle and a second net part on the side. The first net part is made of a hydrophobic material and is arc-shaped and convex or concave. The second net part is in a circular table structure and is connected to the side of the first net part at a narrow end. The second net part is divided into a plurality of first hydrophilic zones that are uniformly distributed in the circumferential direction and each arranged along a generatrix, and a plurality of second hydrophilic zones that are spaced along a center line and each arranged in a ring shape. The first hydrophilic zones and the second hydrophilic zones enclose a hydrophobic zone. The dust filter further comprises a heat pipe assembly for providing a low-temperature environment. The inner ring of the heat pipe is directed away from the dust air flow, is spirally arranged on the outer wall of the dust filtering net, and is connected to the outer ring of the heat pipe at one end. The application realizes automatic cleaning of the dust filtering net, avoids the problem that dust pollutants are adsorbed on the filtering net to reduce the filtering effect, shorten the service life and cause easy wear and tear.

Description

Technical Field

[0001] This invention relates to the field of filtration technology, specifically to dust filter mesh fabrication and preparation methods, as well as dust filters and their usage methods. Background Technology

[0002] During pneumatic conveying, there are a large number of invisible dust particles in the air. Workers who are in this environment for a long time will be affected by the dust, which will affect their health. Furthermore, the machinery and equipment in this environment will also be damaged, which will affect their service life.

[0003] Dust filter mesh is an important component in air filtration equipment, used to capture and filter dust particles in the air. However, in humid environments, the filtration efficiency of dust filter mesh is greatly reduced. Taking dust filtration on construction sites as an example, spraying is often used on-site to suppress dust particles during production or construction. Most traditional filter meshes lack superhydrophobic properties, so after long-term use, a large amount of pollutants will accumulate on the filter mesh, leading to a decrease in filtration efficiency. The filter mesh needs to be replaced frequently, and some pollutants may wear or corrode the filter mesh, resulting in a short service life. Summary of the Invention

[0004] The purpose of this invention is to provide a dust filter mesh that enables automatic cleaning of the dust filter mesh, avoiding problems such as reduced filtration efficiency, frequent replacement, and wear caused by dust pollutants adsorbing on the filter mesh.

[0005] To achieve the above objectives, this dust filter mesh is breathable and consists of a first mesh section in the middle and a second mesh section on the periphery.

[0006] The first mesh section is made of hydrophobic material and has an arc-shaped protrusion or concavity; the second mesh section has a frustum structure and its narrow end is connected to the periphery of the first mesh section.

[0007] The second mesh section is divided into multiple circumferentially uniform first hydrophilic zones, each arranged along the busbar, and multiple second hydrophilic zones spaced along the center line, each arranged in a ring.

[0008] The first and second hydrophilic zones form a hydrophobic zone.

[0009] The preparation method of dust filter mesh specifically includes the following steps:

[0010] S1, two copper sheets of the same thickness are respectively processed into a first copper sheet with a first mesh section in a planar shape and a second copper sheet with a second mesh section in an unfolded fan shape;

[0011] S2, the first copper sheet and the second copper sheet are introduced into the laser machine, and the corresponding hydrophobic areas are cut and punched. The cutting thickness is half of the total thickness. Then, a large number of holes are punched in the cut area to effectively vent the air, and the first copper sheet is processed into an arc-shaped convex or concave shape.

[0012] S3, use acetone, ethanol and deionized water to clean the copper sheets of the first and second mesh sections, and then put them into the drying oven for drying;

[0013] 99% pure paraffin wax is heated to 70°C to form a paraffin wax solution. The first and second hydrophilic regions of the dried second copper sheet are coated with paraffin wax and left to stand under ventilation until the paraffin wax is completely solidified.

[0014] The first and second copper sheets were uniformly sprayed with an organic solution containing superhydrophobic materials, and then dried in a drying oven after spraying.

[0015] S4, remove the paraffin coating on the second copper sheet and clean it completely. The second copper sheet is arranged into a frustum structure and connected to the edge of the first copper sheet to obtain a dust filter mesh.

[0016] Furthermore, in step S1, a 1mm thick copper sheet with a 1mm aperture is selected.

[0017] In step S3, hydrophobic nano-SiO2 particles are used as superhydrophobic materials, and ethanol is used as an organic solution. The ratio of superhydrophobic material to organic solution is 7g:1L.

[0018] The present invention also aims to provide a dust filter, wherein a first mesh section is provided with a hydrophobic material, and a second mesh section is provided with multiple first hydrophilic areas, second hydrophilic areas, and hydrophobic areas, so that moist dust can be collected on it, and turbid droplets can be directly dripped or converged along the corresponding hydrophilic areas, thereby realizing automatic cleaning of the dust filter mesh and avoiding problems such as reduced filtration effect and wear caused by dust pollutants adsorbing on the filter mesh.

[0019] A dust filter, located in a dusty air passage, includes:

[0020] The heat sink housing has an air inlet at the bottom and an air outlet at the top, and is equipped with the aforementioned dust filter mesh inside.

[0021] A heat pipe assembly, used to provide a low-temperature environment, has an outer heat pipe ring and an inner heat pipe ring;

[0022] The inner ring of the heat pipe faces away from the direction of dust and airflow, is spirally wound around the outer wall of the dust filter mesh, and one end is connected to the outer ring of the heat pipe. The outer ring of the heat pipe is located in the spiral pipe of the heat sink shell, and the other end is discharged.

[0023] Furthermore, one end of the outer ring of the heat pipe can be connected to a cooling assembly and a pump body before being connected to the inner ring of the heat pipe to form a closed loop.

[0024] Furthermore, the heat sink housing is made of aluminum alloy, and the outer shell includes an annular housing and heat sink fins, which are equidistantly arranged around the outer side of the housing.

[0025] Furthermore, the angle between the inner ring of the heat pipe and the helix of the spiral pipe and the horizontal is 3-6°.

[0026] A method for using a dust filter includes the following steps:

[0027] a. A large amount of dust-laden gas enters the heat sink housing from the air inlet; a low-temperature liquid medium is used in the heat pipe assembly to ensure that the dust filter mesh is in a low-temperature environment;

[0028] b. Dust-laden air first passes through the dust filter mesh and then comes into contact with the inner ring of the heat pipe. The low temperature environment causes water vapor and tiny droplets in the humid air to condense into small water droplets. The small water droplets mix with the dust to form turbid droplets that accumulate on the dust filter mesh. When the turbid droplets come into contact with the hydrophobic areas / hydrophobic materials in the first and second mesh sections, the turbid droplets are spherical and cannot wet the surface, and drip directly under the action of gravity.

[0029] Some smaller, turbid droplets will roll down the arc of the dust filter mesh to the adjacent first and second hydrophilic zones. The small droplets gradually converge into larger droplets and eventually fall from the corresponding hydrophilic zones. At this point, the dust in the air is filtered out.

[0030] c. The heat from the inner ring of the heat pipe is transferred and dissipated through the outer ring of the heat pipe and the heat sink shell.

[0031] Compared with existing technologies, this dust filter mesh is divided into multiple circumferentially uniform first hydrophilic zones, each arranged along the generatrix, and multiple second hydrophilic zones, each arranged in a ring, spaced apart along the center line. The first and second hydrophilic zones form a hydrophobic zone, which allows moist dust to accumulate and form larger droplets that fall down, thus achieving automatic cleaning of the dust filter mesh. This avoids problems such as reduced filtration efficiency and wear caused by dust pollutants adsorbing on the filter mesh, making it suitable for dust removal in humid environments.

[0032] This dust filter and its usage method provide a low-temperature environment through a heat pipe assembly. The inner ring of the heat pipe is spirally wound around the outer wall of the dust filter mesh, which effectively causes the dust to form turbid droplets. Larger turbid droplets drip directly in the hydrophobic area, while smaller turbid droplets gradually converge into larger droplets and drip in the adjacent first and second hydrophilic areas. This achieves automatic cleaning of the dust filter mesh, avoiding frequent filter replacements and the wear or corrosion of the filter by contaminants that would lead to a short service life. Attached Figure Description

[0033] Figure 1 This is a front view of the dust filter mesh in this invention;

[0034] Figure 2 This is a top view of the dust filter mesh in this invention;

[0035] Figure 3 This is a schematic diagram of the second mesh section unfolded in this invention;

[0036] Figure 4 yes Figure 3 Partial schematic diagram;

[0037] Figure 5 This is a full sectional front view of the dust filter in this invention;

[0038] Figure 6 This is a half-sectional front view of the dust filter in this invention;

[0039] Figure 7 This is a top view of the heat sink housing in this invention;

[0040] Figure 8 This is a schematic diagram of the dust filter assembly in this invention;

[0041] Figure 9 This is another schematic diagram of the dust filter mesh assembly in this invention;

[0042] In the diagram: 1. Heat sink housing, 101. Connecting plate, 102. Through hole, 103. Spiral pipe, 104. Threaded hole, 105. Heat sink fin;

[0043] 2. Heat pipe assembly, 201, inner ring of heat pipe, 202, outer ring of heat pipe;

[0044] 301. First mesh section; 302. Second mesh section; 303. Hydrophobic zone; 304. First hydrophilic zone; 305. Second hydrophilic zone; 4. Baffle plate; 5. Cyclone separator. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0046] like Figures 1 to 4 As shown, this dust filter mesh is breathable and consists of a first mesh section 301 in the middle and a second mesh section 302 on the periphery.

[0047] The first mesh portion 301 is made of a hydrophobic material and has an arc-shaped protrusion or concavity; the second mesh portion 302 has a frustum structure and its narrow end is connected to the periphery of the first mesh portion 301.

[0048] The second mesh section 302 is divided into multiple circumferentially uniform first hydrophilic areas 304, each arranged along the generatrix, and multiple second hydrophilic areas 305 spaced along the center line and arranged in a ring; the first hydrophilic areas 304 and the second hydrophilic areas 305 form a hydrophobic area 303.

[0049] Specifically, the first mesh part 301 in the dust filter mesh is a spherical arc surface, and the whole body is coated with superhydrophobic material, which is regarded as the hydrophobic area 303. The second mesh part 302 is an arc surface after unfolding. During assembly, the second mesh part 302 rotates around the central axis and forms a frustum structure, and the narrow end is glued to the first mesh part 301 to form a dust filter mesh.

[0050] Dust filter mesh can be combined with other power conveying equipment. Taking cyclone separator 5 as an example, the dust filter mesh can be placed at the outlet of cyclone separator 5.

[0051] When damp dust passes through and accumulates on this dust filter mesh, the hydrophobic area 303 on the dust filter mesh causes the turbid droplets to form spherical shapes and cannot wet the surface. Furthermore, the vertical arrangement of the center line of the dust filter mesh allows the turbid droplets to drip directly under the action of gravity. Some of the smaller turbid droplets will roll down along the arc of the dust filter mesh onto the adjacent first hydrophilic area 304 and second hydrophilic area 305. The small droplets gradually converge into larger droplets and eventually fall from the corresponding hydrophilic areas. At this time, the dust in the air is filtered.

[0052] This dust filter mesh has a first mesh section 301 with a superhydrophobic material, and a second mesh section 302 with multiple first hydrophilic areas 304, second hydrophilic areas 305, and surrounding hydrophobic areas 303. This allows moist dust to accumulate on the mesh, and turbid droplets to drip directly or converge along the corresponding hydrophilic areas. This achieves automatic cleaning of the dust filter mesh and avoids problems such as reduced filtration efficiency and wear caused by dust pollutants adsorbing on the filter mesh.

[0053] The preparation method of this dust filter mesh specifically includes the following steps:

[0054] S1, two copper sheets of the same thickness are respectively processed into a first copper sheet with a planar shape of a first mesh portion 301 and a second copper sheet with an unfolded fan shape of a second mesh portion 302;

[0055] S2, the first copper sheet and the second copper sheet are introduced into the laser machine, and the corresponding hydrophobic area 303 is cut and punched. The cutting thickness is half of the total thickness. Then, a large number of holes are punched in the cut area to effectively vent the air, and the first copper sheet is processed into an arc-shaped convex or concave shape.

[0056] S3, the copper sheets of the first mesh section 301 and the second mesh section 302 are cleaned with acetone, ethanol and deionized water, and then placed in a drying oven for drying.

[0057] Paraffin wax with a purity of 99% was heated to 70°C to form a paraffin wax solution. The first hydrophilic region 304 and the second hydrophilic region 305 in the dried second copper sheet were coated with paraffin wax and left to stand under ventilation until the paraffin wax completely solidified.

[0058] The first and second copper sheets were uniformly sprayed with an organic solution containing superhydrophobic materials, and then dried in a drying oven after spraying.

[0059] S4, remove the paraffin coating on the second copper sheet and clean it completely. The second copper sheet is arranged into a frustum structure and connected to the edge of the first copper sheet to obtain the dust filter mesh.

[0060] As a preferred embodiment, two metal copper sheets with a thickness of 1mm are prepared, and the graphics of the first mesh part 301 and the second mesh part 302 are designed using drawing software, that is, the shape and size of the dust filter mesh are determined.

[0061] Next, two copper sheets are fed into a laser machine. The laser machine is used to cut and punch the hydrophobic area 303 on the two copper sheets, that is, to cut the hydrophobic mesh area to a thickness of 0.5mm. The first mesh part 301 can be directly made using a 0.5mm copper sheet. The hydrophobic area 303 is punched with a hole diameter of 1mm. This hole diameter can effectively vent air and trap dust particles. The mesh is then polished. The first copper sheet is processed into an arc-shaped convex or concave shape, which is the first mesh part 301.

[0062] Then, the first and second copper sheets are cleaned with acetone, ethanol, and deionized water, and then placed in a drying oven to dry. 100g of 99% pure paraffin wax is prepared and heated to 70°C to form a paraffin wax solution. This solution is poured into a syringe and used to coat the first hydrophilic region 304 and the second hydrophilic region 305 with paraffin wax. The solution is then left to stand under ventilation for one hour until the paraffin wax is completely solidified. Hydrophobic nano-SiO2 particles are used as a superhydrophobic material, and ethanol is used as an organic solution to uniformly spray the first and second copper sheets. After spraying, the sheets are dried in a 100°C drying oven for 1 hour. Preferably, a high-purity ethanol solution is used.

[0063] Finally, the paraffin coating on the second copper sheet is removed and thoroughly cleaned. The second copper sheet is then formed into a frustum structure and bonded to the edge of the first copper sheet with epoxy adhesive to obtain this dust filter mesh.

[0064] like Figure 5 , Figure 6 As shown, a dust filter, located in a dusty air passage, includes:

[0065] The heat sink housing 1 has an air inlet at the bottom and an air outlet at the top, and is equipped with the aforementioned dust filter mesh inside.

[0066] Heat pipe assembly 2, used to provide a low-temperature environment, has an outer heat pipe ring 202 and an inner heat pipe ring 201;

[0067] The inner ring 201 of the heat pipe faces away from the direction of dust and air flow, and is spirally wound around the outer wall of the dust filter mesh with a variable diameter. One end of the spiral ring 202 of the heat pipe is connected to the outer ring 202 of the heat pipe. The outer ring 202 of the heat pipe is located in the spiral pipe 103 of the heat sink shell 1, and the other end is discharged.

[0068] Specifically, a spiral conduit 103 is provided around the periphery of the heat sink housing, through which the outer ring 202 of the heat pipe passes, or the outer ring 202 of the heat pipe is directly connected to the spiral conduit 103; for example Figure 1 , Figure 7 As shown, the upper end of the heat sink housing 1 may be provided with a threaded hole 104, and the baffle 4 is installed on the top of the heat sink housing 1 by bolts. The baffle 4 can be used to block rainwater.

[0069] As explained, such as Figure 5 , Figure 9 As shown, when the first mesh part 301 is convex, the narrow end of the second mesh part 302 is upward and the wide end is connected to the heat sink housing 1, that is, the dust filter mesh is placed in the forward position. When the first mesh part 301 is concave, the narrow end of the second mesh part 302 is downward and the wide end is connected to the heat sink housing 1, that is, the dust filter mesh is placed in the reverse position.

[0070] Cooling liquid is introduced into the heat pipe assembly 2 to provide a low-temperature environment; the inner ring 201 of the heat pipe can be fixed and wound around the outer wall of the dust filter mesh with epoxy glue; the outlet end of the outer ring 202 of the heat pipe can be connected to the cooling assembly and pump body and then connected to the inner ring 201 of the heat pipe to form a closed loop and realize the circulation of cooling liquid in the heat pipe assembly 2.

[0071] like Figure 6 , Figure 7 As shown, the heat sink housing 1 is made of aluminum alloy, and the housing includes an annular housing and heat sink 105, with the heat sink 105 arranged equidistantly around the outer side of the housing.

[0072] Specifically, the housing can be formed by mating a pair of connecting plates 101, that is, the connecting plates 101 are provided with through holes 102, and bolts pass through the through holes 102 and nuts are used to fix the pair of connecting plates 101 and assemble them into a whole, which is convenient for disassembly. The circumferential arrangement of multiple heat sinks 105 is conducive to improving heat dissipation efficiency; preferably, a sealing gasket is provided between the connecting plates 101.

[0073] During assembly, adjust the assembly direction between the outer ring of the heat pipe 202 and the inner spiral pipe 103 of the heat sink housing 1. After they are aligned, directly assemble the heat sink housing 1 on both sides with the outer ring of the heat pipe 202 in the middle of the housing. Apply thermally conductive silicone to the spiral pipe 103 and stick it to the outer ring of the heat pipe 202 to improve heat dissipation efficiency.

[0074] Furthermore, the angle between the inner ring 201 of the heat pipe and the helix of the spiral pipe 103 and the horizontal is 3-6°;

[0075] Preferably, the spiral pipe 103 has an upward angle of 5°, which can match the outer ring 202 of the heat pipe, and the inner ring 201 of the heat pipe has an upward angle of 5°, so that the fluid flow rate in the heat pipe assembly 2 is moderate, effectively providing a low temperature environment for the dust filter mesh.

[0076] In addition, the dust filter mesh can also be a circular flat mesh, and the inner ring 201 of the heat pipe is arranged in a planar spiral, i.e., a disc-shaped mosquito coil structure.

[0077] like Figure 8 As shown, the example is of installing a dust filter at the output end of a cyclone separator 5.

[0078] When the cyclone separator 5 starts working, it will generate a large amount of gas containing dust, which will enter the heat sink housing 1 from the air inlet.

[0079] The heat pipe assembly 2 uses a low-temperature liquid medium to ensure that the dust filter mesh is in a low-temperature environment. Air carrying dust first passes through the dust filter mesh and then comes into contact with the inner ring 201 of the heat pipe. The low-temperature environment causes water vapor and tiny droplets in the humid air to condense into small water droplets. The small water droplets mix with the dust to form turbid droplets that accumulate on the dust filter mesh. When the turbid droplets come into contact with the hydrophobic regions 303 / hydrophobic materials in the first mesh section 301 and the second mesh section 302, the turbid droplets are spherical and cannot wet the surface because the solid-liquid contact angle of the superhydrophobic material surface is greater than 150°. They then drip directly under the action of gravity. Some of the smaller turbid droplets will roll down the arc of the dust filter mesh to the adjacent first hydrophilic region 304 and second hydrophilic region 305. The small droplets gradually converge into larger droplets and finally fall from the corresponding hydrophilic regions. At this time, the dust in the air is filtered.

[0080] The outer ring 202 of the heat pipe contacts the heat sink housing 1 through the spiral pipe 103. The heat sink 105 is distributed on the heat sink housing 1 to dissipate the heat from the heat pipe. In addition, the dust filter mesh is composed of a first mesh section 301 and a second mesh section 302. If dust particles accumulate on the corresponding mesh section, it can be removed in time for cleaning and replacement to improve the service life of the equipment.

[0081] The inner ring 201 of the spiral heat pipe is bonded to the outer wall of the dust filter mesh with thermally conductive silicone. When gas carrying dust passes through, the dust particles are filtered on the dust filter mesh and will not contaminate the heat pipe assembly 2. A circulating low-temperature liquid medium is introduced into the heat pipe assembly 2, which can effectively transfer the heat inside the heat pipe and enable the heat pipe assembly 2 to continuously provide a low temperature condition. A heat sink 105 is provided on the outside of the heat dissipation shell, and heat is exchanged with the outside through the heat sink 105.

[0082] The filtered gas will effectively reduce the amount of dust particles it carries and reduce its impact on human health; in addition, this dust filter can be used in a variety of fields.

[0083] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

Claims

1. A dust filter, located in a dusty air passage, characterized in that, include: The dust filter mesh is breathable and consists of a first mesh section (301) in the middle and a second mesh section (302) on the periphery. The first mesh section (301) is made of hydrophobic material and has an arc-shaped protrusion or concave shape; the second mesh section (302) has a frustum structure and its narrow end is connected to the periphery of the first mesh section (301). The second mesh section (302) is divided into multiple circumferentially uniform first hydrophilic areas (304) arranged along the generatrix, and multiple second hydrophilic areas (305) spaced along the center line and arranged in a ring. The first hydrophilic zone (304) and the second hydrophilic zone (305) enclose a hydrophobic zone (303); The heat sink housing (1) has an air inlet at the bottom and an air outlet at the top, and is equipped with the dust filter mesh described above inside; A heat pipe assembly (2) for providing a low-temperature environment has an outer heat pipe ring (202) and an inner heat pipe ring (201); The inner ring (201) of the heat pipe faces away from the direction of dust airflow, is spirally wound around the outer wall of the dust filter mesh, and one end is connected to the outer ring (202) of the heat pipe. The outer ring (202) of the heat pipe is located in the spiral pipe (103) of the heat sink shell (1), and the other end is discharged. One end of the outer ring (202) of the heat pipe is connected to the cooling assembly and the pump body, and then connected to the inner ring (201) of the heat pipe to form a closed loop.

2. The dust filter according to claim 1, characterized in that, The heat sink housing (1) is made of aluminum alloy; The housing includes an annular shell and heat sinks (105), which are equidistantly arranged around the outer side of the shell.

3. The dust filter according to claim 2, characterized in that, The angle between the inner ring (201) of the heat pipe and the helix of the spiral pipe (103) and the horizontal is 3°-6°.

4. A method for preparing a dust filter mesh, characterized in that, The dust filter mesh applied to the dust filter of claim 1 specifically includes the following steps: S1, two copper sheets of the same thickness are respectively processed into a first copper sheet with a first mesh section (301) in a planar shape and a second copper sheet with a second mesh section (302) in an unfolded fan shape; S2, the first copper sheet and the second copper sheet are introduced into the laser machine, and the corresponding hydrophobic area (303) is cut and punched. The cutting thickness is half of the total thickness. Then, a large number of holes are punched in the cut area to effectively vent the air, and the first copper sheet is processed into an arc-shaped convex or concave shape. S3, the copper sheets of the first mesh section (301) and the second mesh section (302) are cleaned with acetone, ethanol and deionized water, and then placed in a drying oven for drying; paraffin wax with a purity of 99% is heated to 70°C to form a paraffin wax solution, and the first hydrophilic region (304) and the second hydrophilic region (305) in the dried second copper sheet are coated with paraffin wax, and left to stand under ventilation until the paraffin wax is completely solidified; the first copper sheet and the second copper sheet are uniformly sprayed with an organic solution of superhydrophobic material, and dried in a drying oven after the spraying is completed; S4, remove the paraffin coating on the second copper sheet and clean it completely. The second copper sheet is arranged into a frustum structure and connected to the edge of the first copper sheet to obtain a dust filter mesh.

5. The method for preparing a dust filter mesh according to claim 4, characterized in that: In step S1, a 1mm thick copper sheet with a 1mm aperture is selected. In step S3, hydrophobic nano-SiO2 particles are used as superhydrophobic materials, and ethanol is used as an organic solution. The ratio of superhydrophobic material to organic solution is 7g:1L.

6. A method of using the dust filter according to claim 1, characterized in that, Specifically, the following steps are included: a. A large amount of dusty gas enters the heat sink housing (1) from the air inlet; the heat pipe assembly (2) contains a low-temperature liquid medium to ensure that the dust filter mesh is in a low-temperature environment; b. Air carrying dust first passes through the dust filter mesh and then comes into contact with the inner ring (201) of the heat pipe. The low temperature environment causes water vapor and tiny droplets in the humid air to condense into small water droplets. The small water droplets mix with the dust to form turbid droplets that gather on the dust filter mesh. When the turbid droplets come into contact with the hydrophobic area (303) / hydrophobic material at the first mesh part (301) and the second mesh part (302), the turbid droplets are spherical and cannot wet the surface, and drip directly under the action of gravity. Some of the smaller turbid droplets will roll down along the arc of the dust filter mesh to the adjacent first hydrophilic zone (304) and second hydrophilic zone (305). The small droplets gradually converge into larger droplets and eventually fall from the corresponding hydrophilic zone. At this time, the dust in the air is filtered. c. The heat from the inner ring (201) of the heat pipe is transferred and discharged through the outer ring (202) of the heat pipe and the heat sink shell (1).

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