Filter structure for separating free water and solid particles in air

Abstract

The invention discloses a filter structure for separating free water and solid particles in air, the filter structure comprises a shell, a filter element and a conical wind scooper, the conical wind scooper is arranged in the shell, the conical wind scooper divides the space of the shell into an upper cavity and a lower cavity, the upper cavity is internally provided with a separation assembly, and the lower cavity is internally provided with a filter element; the separation assembly comprises an airflow segmentation assembly, a separation silk screen and a silk screen supporting piece, the separation silk screen is arranged between the airflow segmentation assembly and the silk screen supporting piece, the silk screen supporting piece comprises a supporting outer ring, a first spring, a supporting inner ring, a cross-shaped supporting rod and a fixing ring, and the end of the cross-shaped supporting rod penetrates through the supporting inner ring to be connected with the supporting outer ring; a hollow supporting piece used for supporting the separation silk screen is formed, and the first spring is arranged between the fixing ring and the supporting inner ring; according to the structure, an upper-inlet-side-outlet filtering mode is adopted, the filtering requirements of high-humidity and high-solid-particle-content environments can be met, and most of water and particles are effectively removed through the designed airflow cutting assembly and the designed separation silk screen.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to a filter structure for separating free water and solid particles in the air. Background Art

[0002] Filters are devices that can remove pollutants, particulate matter and harmful substances from the air and are widely used in industrial, commercial and domestic environments. As air quality issues become increasingly serious, the importance of air filters becomes more prominent. In humid environments or rainy weather, the moisture content in the air is higher. In order to keep equipment, systems or environments dry, filters need to have the ability to separate free water in the air. Therefore, moisture filtration is critical in many industrial and commercial applications, especially in gas processing, compressed air systems and climate control.

[0003] At present, filters directly separate free water and solid particles in the air through filter elements. However, when the water concentration in the air is high and the solid particle content is large, the load of the filter element will also become greatly increased, and the separation capacity and life of the filter element will be seriously reduced, resulting in the filtration quality and efficiency being unable to meet the use requirements. For this reason, people increase the filtration area of ​​the filter element or adopt multi-stage filtration, but this method is relatively low-level, which not only increases the volume, but also increases the cost, and the life of the filter element is still relatively short. Especially for some composite filter elements with multiple filter layers, the pore size design of polyester or synthetic fiber filter elements is relatively fine, which can more effectively capture tiny water droplets. However, this kind of filter element is in a high humidity environment, the solid particle content is high, the life of the filter element will be greatly reduced and the filtration effect is poor, and it is difficult to exert the filtration capacity of the filter element. Chinese patent application No. 202010601892.6 discloses a compressed air An air filter comprises an outer shell, a filter element connected to the interior of the outer shell, and a first valve connected to the bottom of the outer shell. This compressed air filter can realize control and communication with the interior of the compressed air filter through a detection connection device. Although it solves the problem that the compressed air filter needs to stop working when the water inside the filter is discharged, the filtering method of the air filter is also directly filtering through the filter element, which is difficult to meet the filtering requirements in an environment with high humidity and high solid particle content. Chinese patent application No. 202021527742.7 discloses a compressed air water filter. The compressed air enters a dehydration centrifuge, and the dehydration centrifuge separates the water in the compressed air onto a water retaining jacket, so as to reduce the residual water in the water filter. The above-mentioned technical problems exist and it cannot meet the needs of actual use. Therefore, a filter structure for separating free water and solid particles in the air is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a filter structure for separating free water and solid particles in the air. The structure adopts a top-in and side-out filtering method, which can adapt to the filtering needs of environments with high humidity and high solid particle content. The designed airflow division component and separation screen can effectively remove most of the moisture and particles, effectively extend the practical life of the filter element, and integrate ultrasonic vibration into the filtering structure to play the role of clearing the net and accelerating the collision with the air, which is helpful for the formation of water droplets. The separation component can be reused without replacement, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a filter structure for separating free water and solid particles in the air, comprising a shell, a filter element and a conical air guide cover, the conical air guide cover is arranged inside the shell, the conical air guide cover divides the space of the shell into an upper cavity and a lower cavity, a separation component is arranged in the upper cavity, the separation component comprises an airflow segmentation component, a separation wire mesh and a wire mesh support, the separation wire mesh is arranged between the airflow segmentation component and the wire mesh support, the wire mesh support comprises a support outer ring, a spring, a support inner ring, a cross support rod and a fixing ring, the end of the cross support rod passes through the support inner ring and the support outer ring The air flow dividing assembly comprises a plug-in joint sleeve, a separator and an upper support ring. The separators are evenly arranged along the circumferential direction of the plug-in joint sleeve. The other end of the separator is fixedly connected to the inner wall of the upper support ring. A vibration guide center rod is arranged at the center of the cross support rod. The plug-in joint sleeve is sleeved on the upper end of the vibration guide center rod. A spring 2 for supporting the plug-in joint sleeve is arranged on the vibration guide center rod. A conduction rod is connected to the center of the vibration guide center rod. The other end of the conduction rod passes through the outside of the shell and is connected to an ultrasonic transducer. The filter element is arranged in the lower cavity of the shell.

[0006] Furthermore, the conical air guide cover is connected to the shell by fixing ribs, a filter element seat is provided on the inner surface of the conical air guide cover, the upper end of the filter element is fixedly connected to the filter element seat, a flow guide gap is left between the conical air guide cover and the shell in the circumferential direction, and blades are provided on the inner wall of the shell.

[0007] Furthermore, an air outlet chamber is provided on the outer side of the shell, the air outlet chamber is connected with the inner cavity of the conical air guide cover through an air guide pipe, and an exhaust port is provided on the air outlet chamber.

[0008] Furthermore, the separation wire mesh is composed of a skeleton and metal wires. The skeleton includes vertical ribs, annular ribs and reinforcing ribs. The annular ribs are fixedly connected above and below by vertical ribs, and the horizontal annular ribs are connected by reinforcing ribs. The metal wires include annular wires, warp wires or vertical wires, and the metal wires are wound around the skeleton.

[0009] Furthermore, a spring support plate is provided on the vibration guide center rod, the lower end of spring two is connected to the spring support plate, the upper end of spring two is connected to the lower end of the plug connector sleeve, the upper end of the plug connector sleeve is arranged into an arc structure, and a gap is left between the upper end of the vibration guide center rod and the bottom of the hole of the plug connector sleeve.

[0010] Furthermore, oblique bracing ribs are arranged between the fixing ring and the inner wall of the shell, and the oblique bracing ribs are evenly distributed along the center of the fixing ring.

[0011] Furthermore, rubber lips are respectively provided in the circumferential direction of the upper end of the supporting outer ring and the upper end of the upper supporting ring, the diameter of the separation screen is smaller than the inner diameter of the supporting outer ring, and the inner diameter of the supporting outer ring is equal to the inner diameter of the upper supporting ring.

[0012] Furthermore, an upper cover is threadedly connected to the upper end of the shell, an air inlet is arranged at the center of the upper cover, an annular box body is arranged on the lower surface of the upper cover, cleaning holes are evenly distributed on the lower surface of the annular box body, and a high-pressure water connecting pipe and a high-pressure gas connecting pipe are respectively connected to the annular box body.

[0013] Furthermore, the separator is made of a metal sheet, the separator is arranged in a right-angled triangle structure, and a notch is provided on the separator.

[0014] Furthermore, an elastic support sheet is provided at the lower end of the shell, which is in conflict with the lower end cover of the filter element. The lower end of the shell is threadedly connected to a base, the inner cavity of the base is set as a liquid accumulation cavity, an automatic drainer is provided in the liquid accumulation cavity, and a drainage duct is provided in the center of the liquid accumulation cavity.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The structure adopts the filtering method of top inlet and side outlet, which can meet the filtering needs of high humidity and high solid particle content environment. The designed air flow division component and separation screen can effectively remove most of the moisture and particles, reduce the load of the filter element, and effectively extend the practical life of the filter element. The ultrasonic vibration is integrated into the filtering structure to clear the net and accelerate the collision with the air, which is conducive to the formation of water droplets. The separation component can be reused without replacement, and has the advantages of high efficiency and environmental protection.

[0016] 2. The designed spring 2 plays the role of elastic support for the plug connector sleeve, avoiding the weight of the airflow segmentation component from being pressed hard on the separation screen, preventing the separation screen from being deformed due to gravity, and guiding the plug connector sleeve through the vibration guide center rod to prevent it from swinging and colliding with the inner wall of the shell. The rubber lip achieves soft contact with the shell, reducing the transmission of ultrasonic vibration to the shell, and at the same time plays the role of sealing with the inner wall of the shell, reducing the air from passing through the gap between the shell and the separation component, ensuring that all the air passes through the separation screen, and improving the separation effect of the product.

[0017] 3. The structure can also realize the cleaning of the separation components. Solid particles or dirt adhering to the separation screen can be cleaned by high-pressure water and gas or a combination of the two, and ultrasonic vibration, ensuring that the separation components can be reused.

[0018] 4. A cross support rod and a vibration guide center rod are used to realize the connection between the upper and lower components of the separation screen, and a hollow support member is formed to support the separation screen, which not only plays a supporting role but also does not affect the air flow. The plug-in method of the plug-in connector sleeve realizes the guiding and limiting effect on the airflow segmentation component, and the overall structure is convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional front view structure of the present invention; Figure 3 It is a schematic diagram of the top view structure of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention without the upper cavity; Figure 5 This is a schematic diagram of the structure of the present invention when viewed from above without the lower cavity; Figure 6 This is a schematic diagram of the structure of the airflow division component of the present invention; Figure 7 This is a schematic diagram of the front view structure of the present invention with the separation screen removed; Figure 8 This is a schematic diagram of the front view structure of the belt separation screen of the present invention; Fig. 9 This is a schematic diagram of the installation structure of the plug connector sleeve of the present invention; Fig.10 It is a schematic diagram of the wire mesh skeleton structure of the present invention; Fig.11 This is a schematic diagram of the top view of the separation screen structure of the present invention; Fig.12 This is an axonometric view of the separation screen of the present invention.

[0020] In the figure: 1 air inlet, 2 high-pressure water connecting pipe, 3 upper cover, 4 shell, 5 base, 6 air outlet chamber, 7 exhaust port, 8 high-pressure gas connecting pipe, 9 air flow segmentation component, 10 separation screen, 11 support outer ring, 12 spring one, 13 guide gap, 14 blade, 15 drainage duct, 16 liquid accumulation cavity, 17 automatic discharger, 18 elastic support sheet, 19 filter element, 20 conical air guide cover, 21 filter element seat, 22 diagonal support rib, 23 fixed ring, 24 annular box, 25 conduction rod, 26 air guide pipe, 27 fixed rib, 28 cleaning through hole, 29 cross support rod, 30 partition, 31 upper support ring, 32 rubber lip, 33 short-circuit rib, 34 vibration guide center rod, 35 notch, 36 support inner ring, 37 ultrasonic transducer, 38 spring support plate, 39 plug connector sleeve, 40 spring two, 41 vertical rib, 42 annular rib, 43 reinforcement rib. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] See also Figure 1-12The present invention provides a technical solution: a filter structure for separating free water and solid particles in the air, comprising a shell 4, a filter element 19 and a conical air guide cover 20. The conical air guide cover 20 is arranged inside the shell 4. The conical air guide cover 20 plays a role in guiding wind, making the wind in a circular direction and downward, and at the same time plays a role in guiding the separated water and solid particles. The conical air guide cover 20 divides the space of the shell 4 into an upper cavity and a lower cavity. The upper cavity is mainly used for coarse separation, which can remove most of the free water and solid particles in the air. The lower cavity is used for fine separation. The coarse separation lays a good foundation for further fine separation, reduces the clogging of the filter element 19 by impurities, prolongs the service life of the filter element 19 and improves the filtering efficiency. The specific structure of the separation component in the upper cavity is: A separation component is arranged in the cavity, and the separation component includes an airflow segmentation component 9, a separation screen 10 and a screen support. The separation screen 10 is formed by winding a metal wire. The separation principle is that the collision and interaction of the airflow on the screen surface separates the moisture from the airflow and then gathers into water droplets. Another function is to filter solid particles in the air. The water droplets and solid particles form a mixture and fall downward. The separation screen 10 is arranged between the airflow segmentation component 9 and the screen support. The screen support includes a support outer ring 11, a spring 12, a support inner ring 36, a cross support rod 29 and a fixing ring 23. The end of the cross support rod 29 passes through the support inner ring 36 and is connected to the support outer ring 11 to form a hollow support for supporting the separation screen 10. The hollow support member not only plays a supporting role, but also does not affect the air flow. The spring 12 is arranged between the fixed ring 23 and the supporting inner ring 36. The spring 12 plays an elastic supporting role and can better cooperate with the ultrasonic transducer 37 to achieve the purpose of ultrasonic vibration cleaning. The airflow segmentation component 9 includes a plug connector sleeve 39, a separator 30 and an upper support ring 31. The separator 30 is evenly arranged along the circumferential direction of the plug connector sleeve 39. The uniform arrangement of the separator 30 forms a circular segmentation net. The airflow is segmented, which is mainly used to increase the contact area with the airflow. Moisture will adhere to the surface of the separator 30 to disperse the airflow, increase the chance of collision with the airflow, and improve the effect of separating moisture. The other end of the separator 30 is fixedly connected to the inner wall of the upper support ring 31. The airflow segmentation The component 9 is pressed on the separation screen 10 to limit the separation screen 10. A vibration guide center rod 34 is arranged at the center of the cross support rod 29. The plug connector sleeve 39 is sleeved on the upper end of the vibration guide center rod 34. A spring 2 40 for supporting the plug connector sleeve 39 is arranged on the vibration guide center rod 34. The spring 2 40 plays a role of elastic support for the plug connector sleeve 39 to avoid the weight of the airflow segmentation component 9 being pressed hard on the separation screen 10 to prevent the separation screen 10 from being deformed due to gravity. The vibration guide center rod 34 plays a guiding role for the plug connector sleeve 39 to prevent the situation of swinging and colliding with the inner wall of the shell 4. The center of the vibration guide center rod 34 is connected to the conduction rod 25. The other end of the conduction rod 25 passes through the outside of the shell 4 and is connected to the ultrasonic transducer 37.The separation component can improve the separation effect by ultrasonic vibration, accelerate the separation of water in the airflow, and help the formation of water droplets. At the same time, it also plays a role in cleaning the net, so that the separation component can be reused without replacement, and has the advantages of high efficiency and environmental protection. The filter element 19 is arranged in the lower cavity of the shell 4. The filter element 19 plays a further separation role. After the rough separation of the separation component in the upper cavity, the burden of the filter element 19 can be effectively reduced. The separation accuracy of the filter element 19 is higher than the separation accuracy of the separation component in the upper cavity. The filter element 19 is mainly composed of an upper end cover, a lower end cover, a skeleton and a filter layer. The filter layer has a fiber aggregation layer, a filter paper layer, an activated carbon filter layer, etc. Different filter layers are selected according to the use environment and working conditions. This part is a conventional structure and will not be described in detail here. The filter can be suitable for air with high moisture and solid particle content. The method of preliminary filtration is adopted to improve the filtration effect and extend the service life of the filter element 19. ,

[0023] The conical air guide cover 20 is connected to the shell 4 by fixing ribs 27. The conical air guide cover 20 also serves as a carrier of the filter element 19 to fix the filter element 19. Specifically, a filter element seat 21 is provided on the inner surface of the conical air guide cover 20. The upper end of the filter element 19 is fixedly connected to the filter element seat 21. A guide gap 13 is left between the conical air guide cover 20 and the shell 4 in the circumferential direction. The guide gap 13 is used for the circulation of airflow. At the same time, another function of the conical air guide cover 20 is to guide the mixture of separated water and solid particles to the inner wall of the shell 4. The mixture flows downward along the inner wall of the shell 4. Blades 14 are provided on the inner wall of the shell 4. The blades 14 cause the air to spiral downward in a circular form. The free water and solid particles are subjected to different centripetal forces from the air to achieve the purpose of separation. The air passes through the filter element 19 to filter the solid particles in the air again to ensure that the filter can meet the requirements of removing water and solid particles.

[0024] An air outlet chamber 6 is provided on the outer side of the shell 4, and the air outlet chamber 6 is connected with the inner cavity of the conical air guide cover 20 through the air guide pipe 26. The gas filtered by the filter element 19 gathers upward in the conical air guide cover 20, and is guided to the air outlet chamber 6 through the air guide pipe 26, and finally discharged through the exhaust port 7. The air outlet chamber 6 is provided with an exhaust port 7.

[0025] The separation wire mesh 10 is composed of a skeleton and metal wires. The skeleton includes vertical ribs 41, annular ribs 42 and reinforcing ribs 43. The annular ribs 42 are fixedly connected up and down by the vertical ribs 41, and the annular ribs 42 in the horizontal direction are connected by the reinforcing ribs 43. The vertical ribs 41, the annular ribs 42 and the reinforcing ribs 43 are welded to form a cylindrical skeleton. The cylindrical skeleton is used for winding the metal wires. The metal wires include annular wires, warp wires or vertical wires. The metal wires are wound on the skeleton. Specifically, the annular wires are wound on the skeleton from a circumferential direction, the warp wires are wound on the skeleton in a horizontal direction, and the vertical wires are wound on the skeleton up and down. The specific number of turns and density of the winding are wound according to the actual situation and the customer's choice, and finally the separation wire mesh 10 is wound. The separation wire mesh 10 separates moisture in the airflow by collision and intercepts solid particles in the airflow.

[0026] A spring support plate 38 is provided on the vibration guide center rod 34. The vibration guide center rod 34 serves to connect the hollow support member with the airflow division component 9, and is also used to conduct ultrasonic vibration force. The lower end of the spring 40 is connected to the spring support plate 38, and the upper end of the spring 40 is connected to the lower end of the plug-in connector sleeve 39. The upper end of the plug-in connector sleeve 39 is arranged to be an arc structure. A gap is left between the upper end of the vibration guide center rod 34 and the bottom of the hole of the plug-in connector sleeve 39. The gap is used as a buffer space for elastic support to avoid the screen cleaning component from pressing on the separation screen 10 during ultrasonic vibration or cleaning, which is beneficial to prevent the separation screen 10 from deformation.

[0027] Diagonal bracing ribs 22 are provided between the fixing ring 23 and the inner wall of the shell 4. The diagonal bracing ribs 22 are evenly distributed along the center of the fixing ring 23. The diagonal bracing ribs 22 support the fixing ring 23 in an inclined upward manner, thereby increasing the safety of the structure.

[0028] Rubber lips 32 are respectively provided in the circumferential direction of the upper end of the support outer ring 11 and the circumferential direction of the upper end of the upper support ring 31. The rubber lips 32 achieve soft contact with the shell 4 to reduce the transmission of ultrasonic vibration to the shell 4, and at the same time play a role of sealing with the inner wall of the shell 4, reducing the air passing through the gap between the shell 4 and the separation component, ensuring that all the air passes through the separation screen 10, and improving the separation effect of the product. The rubber lips 32 are respectively vulcanized on the support outer ring 11 and the upper support ring 31. The diameter of the separation screen 10 is smaller than the inner diameter of the support outer ring 11, and the inner diameter of the support outer ring 11 is equal to the inner diameter of the upper support ring 31.

[0029] The upper end of the shell 4 is threadedly connected with an upper cover 3, and an air inlet 1 is arranged at the center of the upper cover 3. An annular box 24 is arranged on the lower surface of the upper cover 3, and cleaning holes 28 are evenly distributed on the lower surface of the annular box 24. High-pressure water or high-pressure gas can be introduced into the annular box 24 and evenly sprayed out through the cleaning holes 28. The cleaning holes 28 correspond to the separation components. The separation components are cleaned by high-pressure gas or high-pressure gas to clean solid particles or dirt adhering to the separation screen 10, thereby ensuring that the separation components can be reused. A high-pressure water connecting pipe 2 and a high-pressure gas connecting pipe 8 are respectively connected to the annular box 24. The high-pressure water connecting pipe 2 is connected to an external water pump through an electromagnetic valve, and the high-pressure gas connecting pipe 8 is connected to an external air pump through an electromagnetic valve. The opening and closing of the pipelines are controlled by electromagnetic valves respectively to realize remote control. A gas-water mixture can also be introduced into the annular box 24 at the same time, so that the cleaning effect is better.

[0030] The separator 30 is made of a metal sheet and is arranged in a right-angled triangle structure. A notch 35 is provided on the separator 30 . The notch 35 is conducive to dispersing the airflow and increasing the contact area with the airflow.

[0031] An elastic support sheet 18 is provided at the lower end of the shell 4, and the elastic support sheet 18 conflicts with the lower end cover of the filter element 19. The elastic support sheet 18 can tighten the lower end cover of the filter element 19 to prevent the filter element 19 from loosening. The lower end of the shell 4 is threadedly connected with a base 5, and the inner cavity of the base 5 is set as a liquid accumulation chamber 16. The separated water and solid mixture are gathered in the liquid accumulation chamber 16. An automatic drainer 17 is provided in the liquid accumulation chamber 16. A drainage duct 15 is provided in the center of the liquid accumulation chamber 16. The automatic drainer 17 is a prior art, which senses the change of liquid level by floating a float on the liquid surface. The movement of the float triggers the switch action, thereby realizing the start or stop of the drainer. In this patent, the working principle is that when the accumulated water reaches a certain water level, the buoyancy is greater than the air pressure, the float floats up, the drain port opens, and the water is discharged under the action of air pressure. When the buoyancy decreases, the float drops to block the drain port.

[0032] When in use: air enters the housing 4 from the air inlet 1, first passes through the air flow dividing component 9 to divide the air flow, disperses the air flow, increases the chance of collision with the air flow, and then passes downward through the separation screen 10 for separation. The collision and interaction of the air flow on the screen surface separates the moisture from the air flow, and then gathers into water droplets, and filters the solid particles in the air. The water droplets and solid particles form a mixture and fall downward onto the conical air guide 20. In this process, the separation of moisture in the air flow is accelerated by the ultrasonic transducer 37, and the formation of water droplets is facilitated. The conical air guide 20 separates the water and The mixture of solid particles is guided to the inner wall of the shell 4, and the mixture flows downward along the inner wall of the shell 4. The blades 14 cause the air to spiral downward in a circular form. The free water and solid particles are subjected to different centripetal forces from the air, thereby achieving the purpose of separation. The air passes through the filter element 19 to filter the solid particles in the air again. The clean air after separation gathers upward in the conical air guide cover 20, and is guided to the air outlet chamber 6 through the air guide pipe 26, and finally discharged through the exhaust port 7. The separated water and solid mixture gather in the liquid accumulation chamber 16, the automatic discharger 17 is opened, and finally discharged through the drainage duct 15.

[0033] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which all fall within the scope of the present invention to be protected.

Claims

1. A filter structure for separating free water and solid particles in air, comprising a housing (4), a filter element (19) and a conical air guide cover (20), characterized in that: The conical air guide cover (20) is arranged inside the shell (4), and the conical air guide cover (20) divides the space of the shell (4) into an upper cavity and a lower cavity. A separation component is arranged in the upper cavity, and the separation component comprises an airflow division component (9), a separation screen (10) and a screen support. The separation screen (10) is arranged between the airflow division component (9) and the screen support. The screen support comprises a support outer ring (11), a spring 1 (12), a support inner ring (36), a cross support rod (29) and a fixing ring (23). The end of the cross support rod (29) passes through the support inner ring (36) and is connected to the support outer ring (11), so as to form a hollow support for supporting the separation screen (10). The spring 1 (12) is arranged between the fixing ring (23) and the support inner ring (3 6), the airflow dividing assembly (9) comprises a plug connector sleeve (39), a separator (30) and an upper support ring (31), the separator (30) being evenly arranged along the circumferential direction of the plug connector sleeve (39), the other end of the separator (30) being fixedly connected to the inner wall of the upper support ring (31), a vibration guide center rod (34) being arranged at the center of the cross support rod (29), the plug connector sleeve (39) being sleeved on the upper end of the vibration guide center rod (34), a spring (40) for supporting the plug connector sleeve (39) being arranged on the vibration guide center rod (34), a conduction rod (25) being connected to the center of the vibration guide center rod (34), the other end of the conduction rod (25) passing through the outer side of the housing (4) and being connected to an ultrasonic transducer (37), and a filter element (19) being arranged in the lower cavity of the housing (4).

2. A filter structure for separating free water and solid particles in the air according to claim 1, characterized in that: The conical air guide cover (20) is connected to the housing (4) via fixing ribs (27); a filter element seat (21) is provided on the inner surface of the conical air guide cover (20); the upper end of the filter element (19) is fixedly connected to the filter element seat (21); a flow guide gap (13) is left between the conical air guide cover (20) and the housing (4) in the circumferential direction; and blades (14) are provided on the inner wall of the housing (4).

3. A filter structure for separating free water and solid particles in the air according to claim 2, characterized in that: An air outlet chamber (6) is provided on the outer side surface of the shell (4); the air outlet chamber (6) is connected to the inner cavity of the conical air guide cover (20) via an air guide pipe (26); and an exhaust port (7) is provided on the air outlet chamber (6).

4. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: The separation wire mesh (10) is composed of a frame and metal wires. The frame includes vertical ribs (41), annular ribs (42) and reinforcing ribs (43). The annular ribs (42) are fixedly connected to each other via the vertical ribs (41). The annular ribs (42) in the horizontal direction are connected to each other via the reinforcing ribs (43). The metal wires are wound around the frame. The metal wires include annular wires, warp wires or vertical wires.

5. A filter structure for separating free water and solid particles in the air according to claim 1, characterized in that: A spring support plate (38) is provided on the vibration guide center rod (34), the lower end of the second spring (40) is connected to the spring support plate (38), the upper end of the second spring (40) is connected to the lower end of the plug connector sleeve (39), the upper end of the plug connector sleeve (39) is arranged in an arc structure, and a gap is left between the upper end of the vibration guide center rod (34) and the bottom of the hole of the plug connector sleeve (39).

6. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: Diagonal bracing ribs (22) are provided between the fixing ring (23) and the inner wall of the housing (4), and the diagonal bracing ribs (22) are evenly distributed along the center of the fixing ring (23).

7. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: Rubber lips (32) are respectively provided in the circumferential direction of the upper end of the supporting outer ring (11) and the circumferential direction of the upper end of the upper supporting ring (31); the diameter of the separation screen (10) is smaller than the inner diameter of the supporting outer ring (11), and the inner diameter of the supporting outer ring (11) is equal to the inner diameter of the upper supporting ring (31).

8. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: The upper end of the housing (4) is threadedly connected to an upper cover (3), an air inlet (1) is provided at the center of the upper cover (3), an annular box (24) is provided on the lower surface of the upper cover (3), cleaning through holes (28) are evenly distributed on the lower surface of the annular box (24), and a high-pressure water connecting pipe (2) and a high-pressure gas connecting pipe (8) are respectively connected to the annular box (24).

9. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: The separator (30) is made of a metal sheet, the separator (30) is arranged in a right-angled triangle structure, and a notch (35) is provided on the separator (30).

10. A filter structure for separating free water and solid particles in air according to claim 1, characterized in that: An elastic support sheet (18) is provided at the lower end of the housing (4), the elastic support sheet (18) abutting against a lower end cover of the filter element (19), a base (5) is threadedly connected to the lower end of the housing (4), an inner cavity of the base (5) is provided as a liquid accumulation cavity (16), an automatic drain (17) is provided in the liquid accumulation cavity (16), and a drainage conduit (15) is provided at the center of the liquid accumulation cavity (16).

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