A self-priming air-water separator for sewage discharge based on flushable spunlace nonwoven fabric

Abstract

This invention discloses a self-priming gas-liquid separator for sewage discharge based on a washable spunlace nonwoven fabric, belonging to the field of gas-liquid separation technology. It includes a cylinder, a frustum-shaped cylinder, and an air inlet cylinder. A frustum-shaped cylinder with openings at the top and bottom is fixedly connected to the bottom of an annular support on the inner wall of the cylinder. Two air inlets are tangentially welded to the outer wall of the cylinder. Two spiral plates are fixedly connected to the outer wall of the frustum-shaped cylinder. A mounting frame is detachably connected to the top of a fixed support on the inner wall of the cylinder. Cross-shaped supports one and two are fixedly connected to the inner walls of the fixed support and the mounting frame, respectively. Spunlace nonwoven fabric is disposed between cross-shaped supports one and two. This invention achieves efficient two-stage gas-liquid separation through the installation of the frustum-shaped cylinder, air inlet cylinder, and spunlace nonwoven fabric structure. It avoids the problem of untreated high-speed, high-energy airflow directly impacting the upper fine filter material, causing the filter material to be punctured, torn, or prematurely blocked, thus improving the performance and lifespan of the spunlace nonwoven fabric.

Description

Technical Field

[0001] This invention relates to the field of gas-water separation technology, specifically to a gas-water separator for self-priming sewage discharge based on a washable spunlace nonwoven fabric. Background Technology

[0002] In the industrial sector, efficient gas-liquid separation of gases such as compressed air and fuel gas is crucial. Traditional cyclone separators are only effective at separating larger droplets and particles, with very limited efficiency in separating micron- and submicron-sized droplets and fine particles. Filter cartridges capable of fine filtration are also prone to clogging, increased pressure drop, and even damage when directly handling high-liquid-content, high-speed airflows due to droplet impact and rapid impurity accumulation, resulting in short service life and frequent maintenance.

[0003] Traditional filter cartridges are mostly one-piece structures, requiring complete replacement once clogged or reaching their lifespan. These used filter cartridges, which have absorbed oil, moisture, and chemical impurities, are typically classified as hazardous waste or special-handle garbage. Their disposal process is complex, requires high levels of expertise, and is costly. Furthermore, workers are directly exposed to contaminants during replacement, posing health and safety risks.

[0004] Patent CN117212108B discloses an air compressor air-water separator. The above patent achieves the purpose of separating moisture in the air, improves the effect of desiccant blocks in adsorbing moisture in the air, and avoids the problem of desiccant blocks clumping together, which leads to poor effect of desiccant blocks in adsorbing moisture in the air.

[0005] The aforementioned patent addresses the problem of uneven contact between the processing material inside the gas-water separator and the air during the air pretreatment process, which reduces the efficiency of the processing material in air pretreatment. However, there is still room for optimization in terms of airflow processing and filter element usage.

[0006] Therefore, this application proposes a gas-liquid separator for sewage discharge based on a washable spunlace nonwoven fabric, which achieves efficient two-stage gas-liquid separation. Summary of the Invention

[0007] The purpose of this invention is to provide a self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric, in order to solve the problem mentioned in the background art of the difficulty in simultaneously achieving efficient removal of large droplets and deep purification of fine droplets and particles.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a self-priming air-water separator based on a washable spunlace nonwoven fabric, comprising a cylinder, a frustum-shaped cylinder, and an air inlet cylinder. A frustum-shaped cylinder with openings at the top and bottom is fixedly connected to the bottom of an annular support on the inner wall of the cylinder. Two air inlets located below the annular support are tangentially welded to the outer wall of the cylinder. Two spiral plates are fixedly connected to the outer wall of the frustum-shaped cylinder. A drain pipe is fixedly connected through the bottom of the outer wall of the cylinder, and an exhaust pipe is fixedly connected through the top of the cylinder. A mounting frame is detachably connected to the top of the fixed support on the inner wall of the cylinder. Cross-shaped supports one and two are fixedly connected to the inner walls of the fixed support and mounting frame located above the annular support, respectively. Spunlace nonwoven fabric is disposed between cross-shaped supports one and two. The central axes of the fixed support and the mounting frame coincide.

[0009] Preferably, the top of the cross is provided with three layers of spunlace nonwoven fabric in sequence: a lower layer, a middle layer, and an upper layer. The three layers of spunlace nonwoven fabric are sequentially sewn together by a water-soluble thread. The lower, middle, and upper layers of spunlace nonwoven fabric have the same structure. Each layer of spunlace nonwoven fabric includes three layers from bottom to top: a hydrophilic fast-wicking layer, a slow-wicking layer, and a highly absorbent layer. The lower layer of spunlace nonwoven fabric is connected to the middle layer of spunlace nonwoven fabric by a water-soluble thread. The middle layer of spunlace nonwoven fabric is connected to the upper layer of spunlace nonwoven fabric by a water-soluble thread. The water-soluble thread between the lower and middle layers of spunlace nonwoven fabric is located on the highly absorbent layer of the lower layer and the hydrophilic fast-wicking layer of the middle layer. The water-soluble thread between the middle and upper layers of spunlace nonwoven fabric is located on the highly absorbent layer of the middle layer and the hydrophilic fast-wicking layer of the upper layer.

[0010] Preferably, the sidewall of the highly absorbent layer of the spunlace nonwoven fabric is circumferentially sewn with a second water-soluble thread. The second water-soluble thread fixes the tension line to the sidewall of the spunlace nonwoven fabric by sewing. The top of the fixing bracket is symmetrically fixed with a locking block, and the bottom of the mounting bracket is symmetrically provided with a locking groove. The locking groove is movably fitted onto the outer wall of the locking block. The sidewall of the elastic plate inside the locking groove is fixedly connected with the mounting bracket, and the sidewall of the elastic plate is fixedly connected with a slanted panel. The slanted panel is located inside the locking groove, and the sidewall of the locking block is in contact with the slanted panel. The second water-soluble thread is located between the elastic plate and the locking block.

[0011] Preferably, the top of the second cross is symmetrically fixedly connected to a fixing body, the inner wall of the fixing body is slidably connected to three lifting frames, the bottom of the lifting frame is fixedly connected to a spring one, the bottom of the spring one is fixedly connected to the fixing body, the inner wall of the lifting frame is symmetrically fixedly connected to a spring two, the end of the spring two is fixedly connected to a clamping plate, the clamping plate is slidably connected to the inner wall of the lifting frame, the top of the clamping plate is inclined, the top of the inner wall of the fixing body is fixedly connected to two top plates of different lengths, the top of the upper spunlace nonwoven fabric is provided with a connecting line, and the clamping plate clamps on both sides of the connecting line.

[0012] Preferably, the air intake cylinder is arranged symmetrically with respect to the central axis of the cylinder body, and the two spiral plates are spirally wound around the outer wall of the frustum-shaped cylinder in the same direction of rotation.

[0013] Preferably, an observation window is movably installed on the outer wall of the cylinder, and the observation window is located above the fixed bracket and mounting frame.

[0014] Preferably, the lower layer of spunlace nonwoven fabric is connected to the middle layer of spunlace nonwoven fabric via a water-soluble thread, and the middle layer of spunlace nonwoven fabric is connected to the upper layer of spunlace nonwoven fabric via a water-soluble thread.

[0015] Preferably, the side wall of the card block has a through groove through which the tensioning wire passes.

[0016] Preferably, the air inlet, exhaust pipe and liquid outlet are respectively connected to the cylinder body.

[0017] Preferably, a rotating frame is fixedly connected to the bottom of the cross, and the rotating frame is connected to turbine blades via a one-way bearing.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves efficient two-stage gas-liquid separation by installing a frustum-shaped cylinder, an air inlet cylinder, and a spunlace nonwoven fabric structure. It solves the problem that traditional separation technology is difficult to simultaneously achieve efficient removal of large droplets and deep purification of fine droplets and particles when processing gas-liquid mixtures. It avoids the problem of untreated high-speed, high-energy airflow directly impacting the upper fine filter material, causing the filter material to be punctured, torn, or prematurely blocked and fail. This improves the performance and lifespan of the spunlace nonwoven fabric. 2. This invention, through the installation of a water-soluble thread structure, enables the filter material to detach layer by layer, solving the problem that traditional filter cartridges must be shut down and replaced as soon as they become saturated and the resistance increases. This improves the effective dirt-holding capacity and continuous operating time of the equipment. The three layers of spunlace nonwoven fabric are sequentially sewn together by the water-soluble thread. When the bottom layer reaches saturation, it can detach individually, and the middle layer immediately takes over as the new working surface, realizing the relay of the filtration function. 3. This invention, by installing an elastic plate, an inclined plate, and a locking block structure, achieves automatic tensioning during filter material installation and independent release of tension when the layered material falls off, thereby improving the flatness and stability of the filter material during operation and solving the problem that the edges of the circular filter material are prone to sag due to their own weight when supported only by the central cross structure. 4. This invention, through the installation of a clamping plate, connecting line, spring, and top plate structure, achieves adaptive dynamic adjustment of the axial tension of the filter material. It solves the problem that multi-layer filter materials increase in weight due to the adsorption of liquid and impurities during operation, leading to material sagging, loosening, or even deformation. It improves the ability of spunlace nonwoven fabric to maintain the optimal working shape under different load conditions and solves the problem of tensile overload after the filter material detaches layer by layer. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the cylinder body of the present invention without hydroentangled nonwoven fabric inside; Figure 3 This is a front view structural diagram of the fixing bracket, spunlace nonwoven fabric, and mounting frame of the present invention; Figure 4 This is a schematic diagram of the structure of the card block being removed from the card slot according to the present invention; Figure 5 This is a bottom view schematic diagram of the spunlace nonwoven fabric structure of the present invention; Figure 6 This is a cross-sectional view of the fixing bracket and mounting frame of the present invention; Figure 7 This is a radial cross-sectional view of the cylinder of the present invention; Figure 8 This is a schematic cross-sectional view of the fixation body of the present invention.

[0020] In the diagram: 1. Cylinder body; 2. Observation window; 3. Air inlet cylinder; 4. Exhaust pipe; 5. Frustum-shaped cylinder; 6. Spiral plate; 7. Annular bracket; 8. Drain pipe; 9. Fixed bracket; 10. Mounting frame; 11. Cross one; 12. Cross two; 13. Fixing body; 14. Spunlace nonwoven fabric; 15. Tensioning line; 16. Connecting line; 17. Rotating frame; 18. Turbine blade; 19. Slot; 20. Elastic plate; 21. Sloping plate; 22. Through slot; 23. Water-soluble line one; 24. Lifting frame; 25. Clamping plate; 26. Spring one; 27. Spring two; 28. Top plate; 29. ​​Clamping block; 30. Water-soluble line two. Detailed Implementation

[0021] 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.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 7 One embodiment of the present invention provides a self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric, comprising a cylinder 1, a frustum-shaped cylinder 5, and an air inlet cylinder 3. A ring-shaped support 7 on the inner wall of the cylinder 1 has a frustum-shaped cylinder 5 with openings at the top and bottom fixedly connected to its bottom. Two air inlet cylinders 3 are tangentially welded to the outer wall of the cylinder 1, and the air inlet cylinders 3 are arranged centrally symmetrically with respect to the central axis of the cylinder 1. Two spiral plates 6 are fixedly connected to the outer wall of the frustum-shaped cylinder 5, and the two spiral plates 6 are spirally wound around the outer wall of the frustum-shaped cylinder 5 in the same direction of rotation. The bottom of the outer wall is fixedly connected to the drain pipe 8, the top of the cylinder 1 is fixedly connected to the exhaust pipe 4, the top of the fixed bracket 9 on the inner wall of the cylinder 1 is detachably connected to the mounting bracket 10, the inner walls of the fixed bracket 9 and the mounting bracket 10 are respectively fixedly connected to cross one 11 and cross two 12, and a spunlace nonwoven fabric 14 is set between cross one 11 and cross two 12. The central axes of the fixed bracket 9 and the mounting bracket 10 coincide, the air inlet cylinder 3 is below the annular bracket 7, and the fixed bracket 9 and the mounting bracket 10 are above the annular bracket 7.

[0025] Furthermore, the pump body forces the gas-liquid mixture into the cylinder 1 through two tangentially symmetrical air inlets 3. Since the air inlet direction is tangential to the circumference of the cylinder 1, the linear momentum of the fluid is converted into rotational momentum around the central axis of the cylinder 1. A strong primary rotating vortex is formed in the annular space between the inner wall of the cylinder 1 and the outer wall of the frustum-shaped cylinder 5. Under the action of centrifugal force, the denser droplets and particles in the gas-liquid mixture are thrown towards the inner wall of the cylinder 1 and accumulate on the wall surface of the cylinder 1 to form a liquid film. Under the action of gravity, the liquid flows downward along the inner wall of the cylinder 1. The downward airflow is guided by the spiral plates 6 on the frustum-shaped cylinder 5. The two spiral plates 6 guide the fluid to move downward along the conical surface of the frustum-shaped cylinder 5 in a spiral motion, causing the airflow to move downward along the outer wall of the frustum-shaped cylinder 5 and continue to rotate in the same direction. The frustum-shaped cylinder 5 has a structure that is wider at the top and narrower at the bottom. As the frustum-shaped cylinder 5 tapers downward, the radius of rotation decreases. According to the conservation of angular momentum, the tangential rotational speed of the airflow increases, and the centrifugal force increases. This causes tiny, difficult-to-separate droplets and particles to be violently thrown against the inner wall of the cylinder 1, achieving high pre-separation efficiency. Since the cross-sectional area of ​​the annular channel between the cylinder 1 and the frustum-shaped cylinder 5 increases from top to bottom, the average axial velocity of the airflow decreases when the airflow rate is constant. The residence time of the gas-liquid mixture in the separation zone is longer, which provides more time for the centrifugal force to fully exert its effect, for the droplets to be thrown out, and for them to adhere to the wall surface. The droplets and impurities thrown out by the centrifugal force slide down the wall surface of the cylinder 1 and eventually collect at the drain pipe 8 at the bottom of the cylinder 1. As the rotating fluid contracts towards the center of the bottom of the frustum-shaped cylinder 5, its tangential rotational velocity increases. Since the sum of the static and dynamic pressures of the fluid is constant during rotation, the fluid rotational linear velocity is highest in the central region of the bottom of the frustum-shaped cylinder 5, resulting in the highest dynamic pressure and a significant decrease in static pressure. This creates a stable low-pressure zone near the central axis of the frustum-shaped cylinder 5. This low-pressure zone generates an upward suction force, causing the gas to overcome its downward inertia and guiding the initially separated airflow towards the center, forming an upward internal swirling flow. This flow continues upward along the inner wall of the frustum-shaped cylinder 5 to the outlet region at the top. By incorporating dual inlet cylinders 3, the problem of asymmetrical swirling flow easily generated by a single inlet, which could lead to stagnation or backflow on the opposite cylinder wall, causing eccentricity and oscillation in the low-pressure zone, is solved. Symmetrical input eliminates the unbalanced torque in the flow field. This ensures a uniform centrifugal force field, guarantees a stable path for airflow to converge towards the center, and the two spiral flows converge in the same direction at the bottom of the frustum-shaped cylinder 5, concentrating rotational momentum. This effectively utilizes the suction force of the low-pressure zone in the center to complete the airflow reversal, forming a strong and concentrated upward internal swirling flow, thus achieving gas-liquid separation. The airflow that has removed most of the droplets forms a rotating and rising internal swirling flow, which is discharged from the top of the frustum-shaped cylinder 5. The airflow comes into contact with the spunlace nonwoven fabric 14. The fiber network of the spunlace nonwoven fabric 14 efficiently captures the micron- and submicron-sized droplets and solid particles remaining in the airflow through mechanisms such as direct interception, inertial collision, and diffusion effect. Thus, when the airflow penetrates the spunlace nonwoven fabric 14 between cross one 11 and cross two 12, it achieves fine filtration of the airflow. The dry and clean gas, after being deeply purified by the spunlace nonwoven fabric, is discharged from the exhaust pipe 4 at the top of the cylinder 1. The frustum-shaped cylinder 5 performs centrifugal pre-separation of the high-speed, high-liquid-content airflow entering from the inlet cylinder 3, reducing the processing load for the subsequent fine filtration stage of the spunlace nonwoven fabric 14. On the other hand, the frustum-shaped cylinder 5 consumes the kinetic energy of the airflow, preventing the high-speed airflow from directly impacting and damaging the fine spunlace nonwoven fabric 14. The two high-speed, tangentially entering airflows, guided by the outer wall of the frustum-shaped cylinder 5 and the spiral plate 6, form a strong rotating flow. This rotational motion converts a large amount of the linear impact kinetic energy of the airflow into rotational kinetic energy, which is further dissipated as heat energy during friction with the equipment wall and internal gas shearing. When the airflow rotates downwards to the bottom of the frustum-shaped cylinder 5 and converges and changes direction, the airflow becomes relatively gentle. After rectification and pre-separation by the frustum-shaped cylinder 5, the rising airflow is a low-speed, stable-flow, and low-liquid-content airflow. This airflow can pass through the spunlace nonwoven fabric 14 evenly and gently, rather than impacting and tearing the spunlace nonwoven fabric 14 locally in the form of a high-speed jet. Furthermore, the water... The spunlace nonwoven fabric 14 has the ability to quickly disperse and dissociate under the impact or agitation of specific water flow. After the equipment has been used for a period of time, a certain amount of trapped impurities will be attached to the surface of the spunlace nonwoven fabric 14, which will lead to an increase in filtration resistance and a decrease in purification efficiency. At this time, the self-priming sewage discharge system of the equipment can be started to introduce a flushing water flow of specific pressure into the cylinder 1. The water flow forms an impact or agitation effect in the equipment, which causes the spunlace nonwoven fabric 14 to disperse and dissociate quickly. This avoids the problem of pollution of end waste caused by traditional filter elements adsorbing a large amount of impurities. After disposal, the filter elements need to be collected, transported and professionally disposed of as industrial hazardous waste or special waste. The process is complicated and expensive. When replacing the filter elements, workers directly contact the contaminated complete filter elements, which poses a health exposure risk. This solves the pollution problem of end waste. The dispersed and dissociated spunlace nonwoven fabric 14 and trapped impurities can be discharged from the equipment through the sewage discharge pipe with the flushing water flow. Afterwards, the discharge only needs to be treated as ordinary solid waste in compliance with regulations, which greatly simplifies the disposal process and reduces disposal costs.

[0026] Please see Figure 3 and Figure 5This invention provides an embodiment of a self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric. Three layers of spunlace nonwoven fabric 14 (lower, middle, and upper) are sequentially arranged on the top of a cross-shaped structure 11. These three layers are connected sequentially by water-soluble threads 23. The lower, middle, and upper layers of spunlace nonwoven fabric 14 have the same structure. Each layer of spunlace nonwoven fabric 14 comprises three layers from bottom to top: a hydrophilic fast-conducting layer, a slow-wicking layer, and a highly absorbent layer. The lower layer of spunlace nonwoven fabric 14 is connected by water-soluble threads 23. The middle layer of spunlace nonwoven fabric 14 is connected to the upper layer of spunlace nonwoven fabric 14 by water-soluble lines 23. The water-soluble lines 23 between the lower layer of spunlace nonwoven fabric 14 and the middle layer of spunlace nonwoven fabric 14 are set on the highly absorbent layer of the lower layer of spunlace nonwoven fabric 14 and on the hydrophilic fast-conducting layer of the middle layer of spunlace nonwoven fabric 14. The water-soluble lines 23 between the middle layer of spunlace nonwoven fabric 14 and the upper layer of spunlace nonwoven fabric 14 are set on the highly absorbent layer of the middle layer of spunlace nonwoven fabric 14 and on the hydrophilic fast-conducting layer of the upper layer of spunlace nonwoven fabric 14.

[0027] Furthermore, in the initial state, the cross-shaped structure 11 is sequentially sewn together with three identical layers of spunlace nonwoven fabric 14 (lower, middle, and upper layers) via water-soluble threads 23. Each layer of spunlace nonwoven fabric 14 itself contains a hydrophilic fast-wicking layer, a slow-wicking layer, and a highly absorbent layer. The three layers of spunlace nonwoven fabric 14 are connected by water-soluble threads 23. The water-soluble threads 23 are physically entangled and fixed within the fiber web structure of the spunlace nonwoven fabric 14. The water-soluble threads 23 are water-soluble polyvinyl alcohol fibers, possessing sufficient strength in the dry state. During the stitching process, upon contact with water, the hydrogen bonds between the molecular chains are broken, resulting in swelling, softening, and eventual dissolution. The airflow, having removed most of the droplets, first contacts the lower layer of spunlace nonwoven fabric 14. The liquid in the airflow is first rapidly absorbed by the hydrophilic quick-conducting layer of the lower layer of spunlace nonwoven fabric 14, then slowly passes through the slow-wicking layer in the middle of the lower layer of spunlace nonwoven fabric 14, and finally reaches the highly absorbent layer at the top of the lower layer of spunlace nonwoven fabric 14. The hydrophilic quick-conducting layer is composed of 70wt% hydrophilic modified viscose fiber and 30wt% wood pulp fiber wet-laid web, with a basis weight of 35g / m². 2 The first layer, responsible for the rapid capture and planar diffusion of inlet droplets, possesses strong hydrophilicity and rapid capillary moisture-wicking ability, enabling it to quickly capture droplets and rapidly and uniformly diffuse the liquid within its plane. The second layer, a slow-wicking layer, is composed of 40wt% hydrophobically modified polylactic acid fiber and 60wt% wood pulp fiber, with a basis weight of 25g / m². 2 The hydrophobic fibers act as a buffer and flow barrier, forming a "fence" effect that slows down the vertical penetration rate of liquid into the superabsorbent layer and delays the time it takes for the liquid to reach the superabsorbent layer. This prevents the liquid from reaching the superabsorbent layer too early and causing the water-soluble threads 23 of the superabsorbent layer of the lower spunlace nonwoven fabric 14 to break prematurely. The superabsorbent layer is composed of 100wt% superabsorbent wood pulp fibers with a basis weight of 45g / m². 2This process achieves rapid contact absorption, with the liquid eventually slowly penetrating and completely saturating the highly absorbent layer. This signifies that the lower spunlace nonwoven fabric 14 has reached its liquid saturation limit. The water-soluble line 23, pre-sewn between the highly absorbent layer of the lower spunlace nonwoven fabric 14 and the hydrophilic fast-conducting layer of the middle spunlace nonwoven fabric 14, begins to dissolve due to complete wetting by the surrounding saturated liquid. This releases the connection constraint between the lower and middle spunlace nonwoven fabrics 14. The lower spunlace nonwoven fabric 14, due to the adsorption of a large number of droplets and impurities, droops relative to the middle spunlace nonwoven fabric 14, pulling it under the influence of gravity. At this point, the middle spunlace nonwoven fabric... The hydrophilic fast-conducting layer of the spunlace fabric 14 begins to undertake the main gas-liquid separation task; the three-layer spunlace nonwoven fabric 14 is formed in one step using a wet spunlace composite process to ensure the interlayer fiber entanglement. The main body of the spunlace nonwoven fabric 14 is composed of hydrophilic modified viscose fiber and wood pulp fiber. These cellulose fibers can be wetted and swollen when they come into contact with water, and the bonding force between the fibers is weakened. The fibers are physically entangled by high-pressure water jets. The physical entanglement structure is more easily destroyed under water impact. The water flow impact force is sufficient to destroy the physically entangled fiber network. The main fiber components are biodegradable cellulose (viscose, wood pulp) and biodegradable polylactic acid. The effluent can be further biodegraded in the sewage treatment system. The working process of the middle layer spunlace nonwoven fabric 14 is the same as that of the lower layer spunlace nonwoven fabric 14. When the water solubility line 23 between the middle layer spunlace nonwoven fabric 14 and the upper layer spunlace nonwoven fabric 14 reaches the saturation limit, the connection constraint is released due to wetting and dissolution, triggering the shedding of the middle layer spunlace nonwoven fabric 14. The layer-by-layer shedding of the lower and middle layers spunlace nonwoven fabric 14 solves the problem of overall failure and fixed dirt holding capacity of traditional filter elements after clogging, extends the continuous effective operating time of the equipment, reduces the number of downtime maintenance required due to complete filter material failure, and improves the operational stability of the gas-liquid separation system. In terms of economy, the three layers of spunlace nonwoven fabric 14 with the same structure enable each layer of spunlace nonwoven fabric 14 to have complete gas-liquid separation capability. In the initial state, the three layers of spunlace nonwoven fabric 14 work together to provide strong separation efficiency. When the bottom layer of spunlace nonwoven fabric 14 becomes saturated due to intercepting impurities and liquids, it falls off. Subsequently, the middle layer of spunlace nonwoven fabric 14 becomes the new bottom layer, continuing to directly face the airflow and undertake the main separation task, realizing a smooth handover of functions. This allows the equipment to operate continuously online for a period of time, solving the problems of clogging and frequent maintenance of traditional separators.

[0028] Please see Figure 2 , Figure 3 , Figure 4 and Figure 6An embodiment of the present invention provides a self-priming air-water separator based on a flushable spunlace nonwoven fabric. Three layers of spunlace nonwoven fabric 14 (lower, middle, and upper) are sequentially sewn together by a water-soluble thread 23. A second water-soluble thread 30 is circumferentially sewn to the sidewall of the highly absorbent layer of the spunlace nonwoven fabric 14. The second water-soluble thread 30 fixes the tension line 15 to the sidewall of the spunlace nonwoven fabric 14 by sewing. A locking block 29 is symmetrically fixed to the top of a fixing bracket 9. A mounting frame 10 has symmetrically opened slots 19 at its bottom, which are movably fitted onto the outer wall of the locking block 29. The mounting frame 10 is fixedly connected to the sidewall of an elastic plate 20 within the slot 19. An inclined panel 21 is fixedly connected to the sidewall of the elastic plate 20, which is located within the slot 19. The sidewall of the locking block 29 contacts the inclined panel 21. The tension line 15 is located between the elastic plate 20 and the locking block 29. An observation window 2 is movably installed on the outer wall of the cylinder 1, located above the fixing bracket 9 and the mounting frame 10.

[0029] Furthermore, when installing the spunlace nonwoven fabric 14 inside the cylinder 1, open the observation window 2 on the side wall of the cylinder 1, rotate the mounting frame 10 in the reverse direction, the mounting frame 10 drives the elastic plate 20, the elastic plate 20 drives the inclined plate 21, causing the inclined plate 21 to deflect away from the locking block 29, the locking block 29 and the inclined plate 21 are no longer in close contact, thereby releasing the fixed relationship between the mounting frame 10 and the fixed bracket 9, moving the mounting frame 10 upward, separating the mounting frame 10 and the fixed bracket 9, and then laying the spunlace nonwoven fabric 14 flat on the cross-shaped 11 of the fixed bracket 9, while passing the tension line 15 led out from the spunlace nonwoven fabric 14 through the locking block. The slot 22 on the 29 is opened, and the tension line 15 is operated so that the portion of the tension line 15 passing through the slot 22 fits against the outer wall of the locking block 29. The mounting bracket 10 moves down so that the locking slot 19 of the mounting bracket 10 is aligned with the locking block 29, so that the locking slot 19 of the mounting bracket 10 is fitted onto the locking block 29. The mounting bracket 10 is rotated in the forward direction so that the inclined plate 21 on the elastic plate 20 gradually approaches the locking block 29 and gradually contacts the locking block 29. Under the action of the inclined surface of the inclined plate 21, as the inclined plate 21 deflects, the pressure applied by the locking block 29 to the inclined plate 21 gradually increases. The elastic plate 20 is squeezed by the inclined plate 21 and undergoes elastic deformation. The inclined surface of plate 21 fits tightly against the locking block 29, thereby firmly fixing the mounting frame 10 to the fixing bracket 9. Furthermore, during the forward rotation of the mounting frame 10, the end of the tension line 15 away from the spunlace nonwoven fabric 14 faces the end away from the inclined plate 21. As the inclined plate 21 presses against the locking block 29, the elastic plate 20 inside the mounting frame 10 generates friction with the tension line 15, thereby applying a force to the tension line 15 in the direction of rotation of the mounting frame 10, thus keeping the tension line 15 taut. The tension line 15 applies tension to the spunlace nonwoven fabric 14 through the water-soluble thread 30, thereby maintaining the tension of the spunlace nonwoven fabric 14. The spunlace nonwoven fabric 14 is kept in a taut state, thus providing support to the spunlace nonwoven fabric 14 through the cross 11. The tension line 15 provides tension to the spunlace nonwoven fabric 14 along the direction of the cross 12, preventing sagging at the edges of the spunlace nonwoven fabric 14 and ensuring that the spunlace nonwoven fabric 14 remains relatively flat during use. After completing the above operations, the observation window 2 on the side wall of the cylinder 1 is closed, completing the installation steps of the spunlace nonwoven fabric 14 and preparing for the subsequent operation of the air-water separator. Operators can observe the contamination status of the internal spunlace nonwoven fabric 14 through the observation window 2 on the outer wall of the cylinder 1, allowing for timely replacement of the spunlace nonwoven fabric 14. The tension line 15 provides the initial radial tension to the spunlace nonwoven fabric 14, preventing the single cross 11 from being insufficient to fully support the spunlace nonwoven fabric 14 or ensure its flatness. This prevents the spunlace nonwoven fabric 14 from wrinkling, denting, or shaking under airflow impact. When a layer of spunlace nonwoven fabric 14 is about to detach, i.e., liquid penetrates into the highly absorbent layer of that layer, the water-soluble thread 30 of that layer dissolves and breaks, severing the connection between that layer and the tension line 15. This causes the spunlace nonwoven fabric 14 to begin separating from the tension line 15 at the water-soluble thread 30, thus releasing the tension applied by the tension line 15. Under its own weight, the spunlace nonwoven fabric 14 detaches from the cross 11. Since tension lines 15 are connected to the fiber web structure of each layer of spunlace nonwoven fabric 14, the dissolution and breakage of tension lines 15 only affects the layer of spunlace nonwoven fabric 14 that is about to fall off, and will not interfere with the tension of other layers of spunlace nonwoven fabric 14. This ensures that the air-water separator can still maintain a stable filtration and separation effect, and avoids the interruption of the overall operation of the equipment or the decrease in separation efficiency due to the fall off of a single layer of material. Water-soluble lines 1-23 and 2-30 are made of the same material, which is water-soluble polyvinyl alcohol fiber. After water-soluble lines 1-23 and 2-30 come into contact with liquid water for 1-5 minutes, they absorb water and swell, and their mechanical strength drops sharply. At this time, it is enough to cause the saturated spunlace nonwoven fabric 14 to fall off under the action of gravity. After 10-30 minutes of contact with liquid water, the line completely loses its fiber form and completely breaks or dissolves.

[0030] Please see Figure 2 , Figure 3 , Figure 6 and Figure 8 An embodiment of the present invention provides a self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric. A fixed body 13 is symmetrically fixedly connected to the top of a cross-shaped structure 12. Three lifting frames 24 are slidably connected to the inner wall of the fixed body 13. A spring 26 is fixedly connected to the bottom of each lifting frame 24, and the bottom of the spring 26 is fixedly connected to the fixed body 13. A spring 27 is symmetrically fixedly connected to the inner wall of the lifting frame 24. A clamping plate 25 is fixedly connected to the end of the spring 27. The clamping plate 25 is slidably connected to the inner wall of the lifting frame 24, and its top is inclined. Two top plates 28 of different lengths are fixedly connected to the top of the inner wall of the fixed body 13. A connecting line 16 is provided on the top of the upper spunlace nonwoven fabric 14, and the clamping plate 25 clamps both sides of the connecting line 16. The lower spunlace nonwoven fabric 14 is connected to the middle spunlace nonwoven fabric 14 via a water-soluble line 23, and the middle spunlace nonwoven fabric 14 is connected to the upper spunlace nonwoven fabric 14 via the water-soluble line 23.

[0031] Furthermore, under the elastic force of spring 27, spring 27 drives clamping plate 25 to clamp connecting line 16. Under the elastic force of spring 16, spring 16 applies an upward elastic force to lifting frame 24. Lifting frame 24 applies an upward force to clamping plate 25 and connecting line 16. Connecting line 16 applies an upward tension to upper spunlace nonwoven fabric 14. Through the water-soluble lines 23 between upper and middle spunlace nonwoven fabric 14 and between middle and lower spunlace nonwoven fabric 14, connecting line 16 can provide axial tension to the three layers of spunlace nonwoven fabric 14, ensuring the flatness of the three layers of spunlace nonwoven fabric 14. After the lower spunlace nonwoven fabric 14 comes into contact with the airflow, the lower spunlace nonwoven fabric 14 captures droplets in the airflow. As the number of captured droplets increases, the weight of the lower spunlace nonwoven fabric 14 gradually increases. When the water-soluble line 23 between the middle layer and the lower spunlace nonwoven fabric 14 is not broken, the downward force applied to the lower spunlace nonwoven fabric 14 gradually increases, causing the connecting line 16 and the clamping plate 25 to move downward. The clamping plate 25 causes the lifting frame 24 to slide downward along the inner wall of the fixed body 13. The lifting frame 24 compresses the spring 26, and the elastic force applied by the spring 26 to the lifting frame 24 increases. Therefore, when the lower spunlace nonwoven fabric 14 becomes heavier, the spring 26 will provide a greater upward pulling force to prevent the spunlace nonwoven fabric 14 from sag excessively, thereby dynamically maintaining the tension and structural shape of the spunlace nonwoven fabric 14 and preventing the spunlace nonwoven fabric 14 from becoming excessively loose and sag due to wet weight. When the water-soluble thread 23 between the middle layer and the lower layer of spunlace nonwoven fabric 14 breaks, the lower layer of spunlace nonwoven fabric 14 falls off. The lower layer of spunlace nonwoven fabric 14 no longer exerts tension on the middle layer of spunlace nonwoven fabric 14. At this time, the upward tension on the connecting line 16 decreases sharply, and the three springs 26 in the same fixed body 13 release elastic potential energy. The springs 26 drive the lifting frame 24 to slide upward along the inner wall of the fixed body 13. Compared with the initial state, there is one less layer of spunlace nonwoven fabric 14. Therefore, when the lifting frame 24 reaches the initial position, the springs 26 will drive the lifting frame 24 to move further upward. When the inclined surface at the top of the clamping plate 25 contacts the top plate 28 at the top of the inner wall of the fixed body 13... The top plate 28 exerts a lateral pushing force on the inclined surface of the clamping plate 25, causing the clamping plate 25 to slide to both sides against the elastic force of the second spring 27, thereby releasing the clamping of the connecting line 16. Since there are two top plates 28 of different lengths within the same fixed body 13, the longest top plate 28 contacts the lower clamping plate 25 first. At this time, the clamping plate 25 at this position releases the clamping of the connecting line 16, thereby reducing the number of springs 26 that apply an upward force to the connecting line 16 within the fixed body 13 from three to two. This reduces the upward tension on the spunlace nonwoven fabric 14 accordingly, and the lifting frame 24 moves downward and adjusts to a new equilibrium position under the elastic force of the remaining two springs 26. The fixture is designed to accommodate the current weight of the middle and upper layers of spunlace nonwoven fabric 14; to prevent excessive tension on both layers of spunlace nonwoven fabric 14 due to the continued application of elastic force by three springs 26 within the same fixing body 13 after one layer of spunlace nonwoven fabric 14 has detached, which could lead to breakage of the spunlace nonwoven fabric 14; subsequently, after the middle layer of spunlace nonwoven fabric 14 detaches, the shortest top plate 28 contacts the corresponding lower clamping plate 25, pushing the clamping plate 25 to slide to both sides and release the clamping of the connecting line 16. At this time, the number of springs 26 applying upward force to the connecting line 16 within the fixing body 13 is reduced to one, further reducing the upward tension; finally, when the upper layer of spunlace nonwoven fabric 14 detaches, the connecting line 16... When the connector 16 dissolves and breaks, the connector 16 and the water-soluble wire 23 are made of the same material. After all three layers of spunlace nonwoven fabric 14 fall off, the operator reinstalls the spunlace nonwoven fabric 14. When the lower or middle layer of spunlace nonwoven fabric 14 falls off, the number of active springs 26 is adjusted to adjust the tension applied to the upper layer of spunlace nonwoven fabric 14. This ensures that the tension applied to the spunlace nonwoven fabric 14 matches the number of layers at this time, preventing excessive tension from causing deformation, tearing, or damage to the spunlace nonwoven fabric 14. This ensures that it maintains good structural integrity and filtration performance during use, achieving adaptive tension adjustment for spunlace nonwoven fabric 14 with different layers.

[0032] Please see Figure 2 and Figure 3An embodiment of the present invention provides: a self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric. A rotating frame 17 is fixedly connected to the bottom of cross-shaped 11. The rotating frame 17 is connected to a turbine blade 18 via a one-way bearing. A frustum-shaped cylinder 5 with openings at the top and bottom is fixedly connected to the bottom of an annular support 7 on the inner wall of the cylinder 1. Two air inlets 3 are tangentially welded to the outer wall of the cylinder 1. Two spiral plates 6 are fixedly connected to the outer wall of the frustum-shaped cylinder 5. A drain pipe 8 is fixedly connected through the bottom of the outer wall of the cylinder 1. An exhaust pipe 4 is fixedly connected through the top of the cylinder 1. A mounting frame 10 is detachably connected to the top of a fixed support 9 on the inner wall of the cylinder 1. Cross-shaped 11 and cross-shaped 12 are fixedly connected to the inner walls of the fixed support 9 and the mounting frame 10, respectively. Spunlace nonwoven fabric 14 is arranged between cross-shaped 11 and cross-shaped 12.

[0033] Furthermore, the mixed gas-liquid airflow enters the cylinder 1 through two tangentially welded inlet cylinders 3, and is guided by the spiral plate 6 on the outer wall of the frustum-shaped cylinder 5, forming a downward rotating airflow. The airflow turns at the bottom of the frustum-shaped cylinder 5, thus flowing upward. When the airflow flows upward through the area where the turbine blades 18 are located, it impacts the turbine blades 18, causing them to rotate. The turbine blades 18 are connected to the rotating frame 17 through a one-way bearing, which ensures the unidirectionality of the rotation. When the airflow drives the turbine blades 18 to rotate, the turbine blades 18 will generate strong shearing, stirring, and disturbance to the flowing gas, causing the finer droplets remaining in the gas after the initial separation to collide and coalesce into larger droplets under intense disturbance. The rotating turbine blades 18 themselves will generate a centrifugal force field locally, throwing off the droplets that are not completely separated. The rotation of the turbine blades 18 on the wall of the cylinder 1 can disperse the airflow that may still have residual swirling or unevenness coming out of the lower frustum-shaped cylinder 5, making the airflow velocity and distribution more uniform when it enters the filtration area of ​​the upper spunlace nonwoven fabric 14. This avoids the high-speed airflow directly impacting the local area of ​​the spunlace nonwoven fabric 14 and causing premature breakdown. The idling of the turbine blades 18 consumes part of the kinetic energy of the airflow, which plays a damping or buffering role and can reduce the airflow velocity reaching the spunlace nonwoven fabric 14. In addition, when the spunlace nonwoven fabric 14 falls off, if there is a local situation where the spunlace nonwoven fabric 14 is caught on the cross-11, the turbine blades 18 contact the fallen spunlace nonwoven fabric 14 when rotating, thereby taking away the spunlace nonwoven fabric 14. The spunlace nonwoven fabric 14 on the turbine blades 18 is thrown towards the inner wall of the cylinder 1 under the action of centrifugal force.

[0034] Working principle: The gas-liquid mixture enters the cylinder 1 through two tangentially symmetrical air inlets 3. The air inlet direction is tangential to the circumference of the cylinder 1. A rotating vortex is formed in the annular space between the inner wall of the cylinder 1 and the outer wall of the frustum-shaped cylinder 5. The denser droplets and particles are thrown towards the inner wall of the cylinder 1. The airflow moves downward in a spiral motion along the outer wall of the frustum-shaped cylinder 5. The rotating airflow forms a low-pressure zone at the bottom center of the frustum-shaped cylinder 5, generating an upward suction force. This guides the initially separated airflow to gather towards the center and form an upward inner vortex, which is then discharged from the top of the frustum-shaped cylinder 5. After primary separation, the airflow flows upward and contacts the spunlace nonwoven fabric 14. This material captures residual droplets and solid particles in the airflow, achieving deep purification of the gas. The purified, dry, and clean gas is finally discharged from the exhaust pipe 4 at the top of the cylinder 1. During operation, the airflow first contacts the bottom layer of spunlace nonwoven fabric 14. The liquid is quickly absorbed by the hydrophilic fast-conducting layer and buffered by the slow-wicking layer before reaching the highly absorbent layer. When the highly absorbent layer is completely saturated by the liquid, the water-soluble thread 23 pre-stitched between the lower and middle layers of spunlace nonwoven fabric 14 dissolves, releasing the connection between the two layers. At the same time, the water-soluble thread 30 on the lower layer of spunlace nonwoven fabric 14 breaks, releasing the connection between the tension line 15 and the lower layer of spunlace nonwoven fabric 14. The saturated lower layer of spunlace nonwoven fabric 14 sags due to its own weight and falls off from the cross 11. Subsequently, the spunlace nonwoven fabric 14 takes over as the new working surface. This process is carried out layer by layer until the three layers of material fall off in sequence. After the equipment has been running for a period of time, a flushing water flow of a specific pressure is introduced into the cylinder 1. The spunlace nonwoven fabric 14 is rapidly dispersed and disintegrated under the impact of the water flow.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric, characterized in that: The device includes a cylinder (1), a frustum-shaped cylinder (5), and an air inlet cylinder (3). The bottom of the annular support (7) on the inner wall of the cylinder (1) is fixedly connected to the frustum-shaped cylinder (5) with openings at the top and bottom. Two air inlets (3) located below the annular support (7) are tangentially welded to the outer wall of the cylinder (1). Two spiral plates (6) are fixedly connected to the outer wall of the frustum-shaped cylinder (5). A drain pipe (8) is fixedly connected through the bottom of the outer wall of the cylinder (1). An exhaust pipe (4) is fixedly connected through the top of the cylinder (1). A mounting bracket (10) is detachably connected to the top of the fixed support (9) on the inner wall of the cylinder (1). Cross one (11) and cross two (12) are fixedly connected to the inner walls of the fixed support (9) and mounting bracket (10) located above the annular support (7). A spunlace nonwoven fabric (14) is provided between the cross one (11) and cross two (12). The central axes of the fixed support (9) and mounting bracket (10) coincide.

2. The air-water separator for self-priming sewage discharge based on washable spunlace nonwoven fabric according to claim 1, characterized in that: The top of the cross-shaped structure (11) is provided with three layers of spunlace nonwoven fabric (14) in sequence: lower, middle, and upper. The three layers of spunlace nonwoven fabric (14) are sequentially sewn together by a water-soluble thread (23). The lower, middle, and upper layers of spunlace nonwoven fabric (14) have the same structure. Each layer of spunlace nonwoven fabric (14) contains three layers from bottom to top: a hydrophilic fast-wicking layer, a slow-wicking layer, and a highly absorbent layer. The lower layer of spunlace nonwoven fabric (14) is connected to the middle layer of spunlace nonwoven fabric (14) by a water-soluble thread (23). The upper spunlace nonwoven fabric (14) is connected by a water-soluble line (23). The water-soluble line (23) between the lower spunlace nonwoven fabric (14) and the middle spunlace nonwoven fabric (14) is set on the highly absorbent layer of the lower spunlace nonwoven fabric (14) and the hydrophilic fast-conducting layer of the middle spunlace nonwoven fabric (14). The water-soluble line (23) between the middle spunlace nonwoven fabric (14) and the upper spunlace nonwoven fabric (14) is set on the highly absorbent layer of the middle spunlace nonwoven fabric (14) and the hydrophilic fast-conducting layer of the upper spunlace nonwoven fabric (14).

3. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 2, characterized in that: The spunlace nonwoven fabric (14) has a water-soluble thread 2 (30) circumferentially sewn to the side wall of the high moisture-absorbing layer. The water-soluble thread 2 (30) fixes the tension line (15) to the side wall of the spunlace nonwoven fabric (14) by sewing. The top of the fixing bracket (9) is symmetrically fixed with a locking block (29). The bottom of the mounting bracket (10) is symmetrically provided with a locking groove (19). The locking groove (19) is movably fitted on the outer wall of the locking block (29). The side wall of the elastic plate (20) in the locking groove (19) is fixedly connected with the mounting bracket (10). The side wall of the elastic plate (20) is fixedly connected with a slanted plate (21). The slanted plate (21) is located in the locking groove (19). The side wall of the locking block (29) is in contact with the slanted plate (21). The tension line (15) is located between the elastic plate (20) and the locking block (29).

4. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric as described in claim 1, characterized in that: The top of the cross two (12) is symmetrically fixedly connected to a fixed body (13). Three lifting frames (24) are slidably connected to the inner wall of the fixed body (13). The bottom of the lifting frame (24) is fixedly connected to a spring one (26). The bottom of the spring one (26) is fixedly connected to the fixed body (13). The inner wall of the lifting frame (24) is symmetrically fixedly connected to a spring two (27). The end of the spring two (27) is fixedly connected to a clamping plate (25). The clamping plate (25) is slidably connected to the inner wall of the lifting frame (24). The top of the clamping plate (25) is a slope. The top of the inner wall of the fixed body (13) is fixedly connected to two top plates (28) of different lengths. The top of the upper spunlace nonwoven fabric (14) is provided with a connecting line (16). The clamping plate (25) is clamped on both sides of the connecting line (16).

5. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 1, characterized in that: The air intake cylinder (3) is arranged symmetrically with respect to the central axis of the cylinder (1), and two spiral plates (6) are spirally wound around the outer wall of the frustum-shaped cylinder (5) in the same direction of rotation.

6. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 1, characterized in that: An observation window (2) is movably installed on the outer wall of the cylinder (1), and the observation window (2) is located above the fixed bracket (9) and the mounting bracket (10).

7. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 1, characterized in that: The lower layer of spunlace nonwoven fabric (14) is connected to the middle layer of spunlace nonwoven fabric (14) via a water-soluble line (23), and the middle layer of spunlace nonwoven fabric (14) is connected to the upper layer of spunlace nonwoven fabric (14) via a water-soluble line (23).

8. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 3, characterized in that: The side wall of the card block (29) has a through groove (22), through which the tension line (15) passes.

9. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 1, characterized in that: The air inlet cylinder (3), the exhaust pipe (4) and the liquid drain pipe (8) are respectively connected to the cylinder body (1).

10. A self-priming air-water separator for sewage discharge based on a washable spunlace nonwoven fabric according to claim 9, characterized in that: The bottom of the cross-shaped part (11) is fixedly connected to a rotating frame (17), and the rotating frame (17) is connected to a turbine blade (18) via a one-way bearing.

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