Coalescence filtering device

Abstract

The utility model belongs to the technical field of oil-water separation equipment, and provides a coalescence filtering device which comprises a filter element assembly and at least one air floating pipe, the filter element assembly comprises at least one coalescence filter element, the lower end of the coalescence filter element is connected with a liquid outlet pipe, the air floating pipe is arranged at the lower end of the coalescence filter element, and the air floating pipe is connected with the liquid outlet pipe. At least one aeration hole is formed in the air floating pipe, and the air floating pipe is used for being connected with a dissolved air pump. Compared with the prior art, the air flotation device has the advantages that the air flotation pipe is used for assisting separation, suspended particles adhered to the surface of the coalescence filter element are reduced, the risk that the coalescence filter element loses the coalescence function due to surface activity change is reduced, the service life of the coalescence filter element is prolonged, and therefore the efficiency of the coalescence filter element is improved by reducing the shutdown frequency. The continuity and the stability of the whole production process are improved, and the production efficiency and the product quality can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of oil-water separation equipment, and specifically relates to a coalescence and filtration device. Background Art

[0002] Coalescing filters are highly efficient separation and filtration devices commonly used in industrial and laboratory environments. They utilize coalescing and filtration to separate substances. As the liquid passes through the filter, tiny particles or droplets accumulate on the filter surface, forming larger aggregates. These aggregates are then separated by gravity or fluid dynamics, achieving separation. Coalescing filter elements typically utilize a multi-layered structure with progressively larger pore sizes, which facilitates coalescence and separation of different liquids as they pass through the filter element.

[0003] During use, coalescing filter elements, due to their inherent retention function, will retain suspended particles in the fluid. These suspended particles adhere to the filter element surface, causing the surface activity to change. After a period of operation, the coalescing function and separation effect will be lost. Therefore, the filter element needs to be replaced frequently, and this requires production suspension. Frequent filter element replacement leads to frequent downtime, which affects the entire production process. Utility Model Content

[0004] The purpose of this application is to provide a coalescence filter device, which uses an air flotation tube to assist in separation, thereby reducing the suspended particles adhering to the surface of the coalescence filter element, reducing the risk of the coalescence filter element losing its coalescence function due to changes in surface activity, and extending the service life of the coalescence filter element. By reducing the number of shutdowns, the continuity and stability of the entire production process are improved, which is conducive to improving production efficiency and product quality.

[0005] The technical solution adopted by this application to solve the above-mentioned technical problems is: proposing a coalescence filtration device, including: a filter element assembly and at least one flotation tube, the filter element assembly includes at least one coalescence filter element, the lower end of the coalescence filter element is connected to a liquid outlet pipe, the flotation tube is arranged at the lower end of the coalescence filter element, the flotation tube is provided with at least one aeration hole, and the flotation tube is used to connect to a dissolved air pump.

[0006] Through the above-mentioned technical features, the liquid to be treated first passes through the coalescing filter element in the filter element assembly. The filter element's multi-layer structure and gradually increasing pore size allow tiny particles or droplets to accumulate on the filter element surface during passage, forming larger aggregates. These aggregates are then initially separated by gravity or fluid dynamics, while some heavier impurities may be directly deposited at the bottom of the filter element or discharged through the liquid outlet pipe. The flotation tube releases tiny bubbles through the aeration holes toward the lower end of the filter element. When the bubbles come into contact with tiny particles or residual suspended matter that have not yet been completely separated after coalescence, they adhere to the particle surface, forming gas-solid complexes. Due to the buoyancy of the bubbles, these complexes rise rapidly, further promoting the separation of suspended particles from the liquid. As the bubbles and particles rise, they eventually escape the filter element area and enter the subsequent collection or treatment system. Furthermore, the bubbles can come into contact with suspended particles on the filter element surface, promoting their separation and rise.

[0007] Therefore, the flotation tube's assisted separation significantly enhances the separation of tiny particles and droplets, resulting in a purer filtered liquid. The flotation tube also flushes the filter element, reducing the number of suspended particles adhering to the filter surface, slowing the rate of change in the filter's surface activity, and extending the filter's effective life. This reduces the frequency of filter replacements, reducing downtime and associated costs. Furthermore, by reducing downtime, the continuity and stability of the entire production process is enhanced, contributing to improved production efficiency and product quality.

[0008] Preferably, the filter element assembly includes a plurality of coalescing filter elements distributed linearly or in an array.

[0009] The aforementioned technical features enable the parallel arrangement of multiple coalescing filter elements to simultaneously process larger flow rates of liquid. Whether arranged linearly or in an array, this significantly increases the filtration area, thereby improving the overall filtration efficiency and throughput of the system. Liquid flows more evenly through multiple filter elements, reducing the risk of local overload and clogging. This also enhances filtration effectiveness, as each filter element bears a relatively balanced filtration load. Furthermore, the bubbles released through the aeration holes in the flotation tubes cover a wider area, contacting more suspended particles and forming air-solid complexes. This enhanced flotation further promotes the separation and ascent of suspended particles. By distributing the filtration load and enhancing flotation, wear and clogging risks on individual filter elements are reduced, thereby extending the service life of the entire filter assembly. Furthermore, the multiple filter elements provide system redundancy, improving the reliability and stability of the filtration system and reducing the risk of production interruptions due to single filter element failure. The number and distribution of filter elements can be flexibly adjusted to meet processing requirements of varying scales and flow rates.

[0010] Preferably, a top plate and a bottom plate are respectively provided at the upper and lower ends of the coalescing filter element, the top plate is respectively provided with at least one upper fixing hole corresponding to the coalescing filter element, and the bottom plate is provided with at least one lower fixing hole corresponding to the coalescing filter element.

[0011] Through the above technical features, the top plate and the bottom plate firmly fix the coalescing filter element through the upper fixing holes and the lower fixing holes, thereby ensuring the stability of the filter element during the filtration process, preventing the filter element from being deformed or shifted due to fluid pressure, and ensuring that the filter element can evenly bear the filtration load.

[0012] Preferably, the flotation tube is connected to the upper end of the bottom plate, the flotation tube extends along the arrangement direction of the plurality of coalescing filter elements, and the flotation tube is provided with a plurality of aeration holes corresponding to the coalescing filter elements.

[0013] The aforementioned technical features ensure that the flotation tubes extend along the alignment of the coalescing filter elements, ensuring that bubbles are released directly and evenly into the area beneath each filter element. These bubbles can fully contact suspended particles in the liquid passing through the filter element, forming an air-solid complex, effectively promoting the separation and ascent of suspended particles. Furthermore, the bubbles can contact suspended particles on the filter element surface, promoting their separation and ascent. This facilitated separation and ascent of suspended particles by flotation reduces the number of suspended particles adhering to the filter element surface, thereby extending the filter element's service life.

[0014] Preferably, a first manifold is provided on one side of the bottom plate, one end of the flotation tube is connected to the first manifold, and the first manifold is used to be connected to a dissolved air pump.

[0015] Through these technical features, a dissolved air pump injects high-pressure gas into the flotation tubes via the first manifold. The gas dissolves in the water or process fluid within the tubes, forming aerated water or dissolved air water. Within the tubes, the dissolved gas moves with the water flow to the various aeration holes. As the water flows through the aeration holes, the pressure differential causes the dissolved gas to be released as tiny bubbles. The dissolved air pump supplies air uniformly to each dry flotation tube in the device via the first manifold, enhancing the compactness of the device.

[0016] Preferably, a first fixing ring is provided at one end of the bottom plate away from the first manifold, and one end of the flotation tube is inserted into the first fixing ring.

[0017] Through the above technical features, the first fixing ring fixes one end of the flotation tube, ensuring that the flotation tube will not shift or fall off due to water flow impact or equipment vibration during operation, thereby enhancing the connection strength between the flotation tube and the base plate, improving the stability of the entire flotation system, and reducing the failure rate caused by equipment vibration or water flow impact.

[0018] Preferably, the liquid outlet pipe is provided at the lower end of the bottom plate, and the other end of the liquid outlet pipe is connected to a second manifold, and the second manifold is provided with a liquid outlet.

[0019] Through the above technical features, in the coalescing filter element assembly, after the liquid to be treated passes through the filtering action of the filter element, the suspended matter and impurities therein are effectively intercepted, while the clean liquid continues to flow downward and is collected through the liquid outlet pipe at the lower end of the base plate. The liquid outlet pipe transports the collected clean liquid to the second manifold. The second manifold serves as a collection point, uniformly collecting liquids from different liquid outlet pipes. The second manifold is provided with a liquid outlet, which is used to guide the collected clean liquid to the next processing link or storage device. By arranging the liquid outlet pipe at the lower end of the base plate and connecting it to the second manifold for unified drainage, space can be saved and the complexity of the pipeline layout can be reduced.

[0020] Preferably, a downwardly extending fixing plate is provided at the lower end of the bottom plate, a second fixing ring is provided on the fixing plate corresponding to the liquid outlet pipe, and one end of the liquid outlet pipe is inserted into the second fixing ring.

[0021] Through the above technical features, the connection strength between the liquid outlet pipe and the base plate is enhanced by the reinforcement of the fixing plate and the second fixing ring, which improves the structural stability of the entire equipment, helps to reduce the problem of loosening or falling off of the liquid outlet pipe caused by equipment vibration or external impact, and ensures long-term stable operation of the equipment.

[0022] Preferably, the lower end of the base plate is connected to a support plate.

[0023] Through the above technical features, the device can be stably placed in a required position through the support plate, making it convenient to use the device.

[0024] Preferably, a plurality of hanging rings are provided at the upper end of the top plate.

[0025] Through the above technical features, the lifting and moving of the device are facilitated by the lifting ring.

[0026] In summary, this application has the following beneficial effects:

[0027] (1) The present application uses flotation tubes to assist separation, thereby reducing the amount of suspended particles adhering to the surface of the coalescing filter element, reducing the risk of the coalescing filter element losing its coalescing function due to changes in surface activity, and extending the service life of the coalescing filter element. This reduces the number of shutdowns, improves the continuity and stability of the entire production process, and is conducive to improving production efficiency and product quality.

[0028] (2) The parallel arrangement of multiple coalescing filter elements in the present application enables the device to simultaneously process a larger flow rate of liquid to be treated. Whether it is linearly distributed or array-shaped, it can significantly increase the filtration area, thereby improving the filtration efficiency and throughput of the entire device;

[0029] (3) The top plate and bottom plate of the present application firmly fix the coalescing filter element through the upper fixing holes and the lower fixing holes, thereby ensuring the stability of the filter element during the filtration process, preventing the filter element from being deformed or displaced due to fluid pressure, and ensuring that the filter element can evenly bear the filtration load. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the overall structure of an embodiment of this application Figure 3 .

[0033] In the figure, 1. filter element assembly; 11. coalescing filter element; 12. liquid outlet pipe; 13. second manifold; 131. liquid outlet; 2. flotation tube; 21. aeration hole; 22. first manifold; 3. top plate; 31. upper fixing hole; 32. lifting ring; 4. bottom plate; 41. lower fixing hole; 42. first fixing ring; 43. fixing plate; 44. second fixing ring; 45. fixing block; 5. support plate; 6. support rod. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present application and, in conjunction with the accompanying drawings, further describe the technical solution of the present application, but the present application is not limited to these embodiments.

[0035] like Figure 1 As shown, the present application discloses a coalescence filtration device, comprising: a top plate 3, a bottom plate 4 and a support plate 5, wherein the support plate 5 is connected to the lower end of the bottom plate 4, the top plate 3 is arranged above the bottom plate 4, the top plate 3 and the bottom plate 4 are connected by a support rod 6, and a plurality of hanging rings 32 are provided at the upper end of the top plate 3.

[0036] A filter element assembly 1 is provided between the top plate 3 and the bottom plate 4. The filter element assembly 1 includes a plurality of coalescing filter elements 11 distributed in an array. The top rod is provided with a plurality of upper fixing holes 31 distributed in an array. The bottom plate 4 is provided with a plurality of lower fixing holes 41 distributed in an array. The upper and lower ends of each coalescing filter element 11 are respectively passed through the upper fixing hole 31 and the lower fixing hole 41, and are detachably connected to the upper fixing hole 31 and the lower fixing hole 41 through fixing parts.

[0037] The filter element assembly 1 of the present application may also be a row of multiple coalescing filter elements 11 distributed linearly, or a single coalescing filter element 11, and the top plate 3 and the bottom plate 4 may be flexibly adjusted and changed according to the number of coalescing filter elements 11. The surface of the coalescing filter element 11 in the present application is coated with a hydrophilic-oleophobic / oleophilic-hydrophobic coating.

[0038] like Figure 1 、 Figure 2 As shown, the coalescing filter element 11 is located at the lower end of the bottom plate 4 and is connected to a liquid outlet pipe 12 . The lower ends of the coalescing filter elements 11 located on the same straight line are connected to the same liquid outlet pipe 12 , and several liquid outlet pipes 12 are arranged in parallel at the lower end of the bottom plate 4 .

[0039] The lower end of the base plate 4 is provided with a downwardly extending fixed plate 43, which is located between the base plate 4 and the support plate 5. A second fixed ring 44 is provided on the fixed plate 43 corresponding to the liquid outlet pipe 12. One end of the liquid outlet pipe 12 is inserted into the second fixed ring 44, and the other end of the liquid outlet pipe 12 extends upward to the upper end of the base plate 4 and connects to the second manifold 13. Several liquid outlet pipes 12 are connected to the second manifold 13, and one end of the second manifold 13 is provided with a liquid outlet 131, which uniformly discharges the collected cleaning liquid. In this application, the extension direction of the second manifold 13 is perpendicular to the extension direction of the liquid outlet pipes 12, which facilitates the connection of each liquid outlet pipe 12 to the second manifold 13.

[0040] Two upwardly extending fixing blocks 45 are provided on the bottom plate 4 . The fixing blocks 45 abut against one side of the second manifold 13 to support the second manifold 13 .

[0041] like Figure 2 、 Figure 3 As shown, the upper end of the base plate 4 is connected to several flotation tubes 2 arranged in parallel. Each flotation tube 2 extends in the same direction as the liquid outlet pipe 12. Aeration holes 21 are provided on one side of the lower end of the coalescing filter element 11 located on the same straight line on the flotation tubes 2. One end of each flotation tube 2 is connected to a first manifold 22, which is connected to a side of the base plate 4 and is connected to a dissolved air pump.

[0042] A first fixing ring 42 is provided at one end of the bottom plate 4 away from the first manifold 22 , and one end of the flotation tube 2 is inserted into the first fixing ring 42 .

[0043] Working principle: The liquid to be treated first passes through the coalescing filter element 11 in the filter element assembly 1. The multi-layer structure of the filter element and its pore size increase layer by layer, so that during the liquid passing through, tiny particles or droplets can accumulate on the surface of the filter element to form larger agglomerates. The agglomerates are then initially separated under the action of gravity or fluid dynamics. Some heavier impurities may be directly deposited at the bottom of the filter element or discharged through the liquid outlet pipe 12.

[0044] Simultaneously, a dissolved air pump injects high-pressure gas into the flotation tubes 2 through the first manifold 22. The gas dissolves in the water or treatment fluid within the flotation tubes 2, forming aerated water or dissolved air water. Within the flotation tubes 2, the dissolved gas follows the water flow and moves to the aeration holes 21. As the water flows through the aeration holes 21, the pressure differential causes the dissolved gas to be released as tiny bubbles.

[0045] The flotation tube 2 releases microscopic bubbles toward the lower end of the filter element through the aeration holes 21. When the bubbles come into contact with tiny particles or residual suspended matter that have not yet been completely separated after coalescence, they adhere to the particle surfaces, forming gas-solid complexes. Due to the buoyancy of the bubbles, these complexes rise rapidly, further promoting the separation of suspended particles from the liquid. As the bubbles and particles rise, they eventually escape the filter area and enter subsequent collection or treatment systems. Furthermore, the bubbles can come into contact with suspended particles on the filter element surface, promoting their separation and ascent.

[0046] Therefore, the present application uses the flotation tube 2 to assist in separation, which significantly enhances the separation effect of tiny particles and droplets, making the filtered liquid purer, and reduces the suspended particles adhering to the surface of the coalescing filter element 11, thereby reducing the risk of the coalescing filter element 11 losing its coalescing function due to changes in surface activity, and extending the service life of the coalescing filter element 11. By reducing the number of shutdowns, the continuity and stability of the entire production process are improved, which is conducive to improving production efficiency and product quality.

[0047] The specific embodiments described herein are merely examples for illustrating the present application. Those skilled in the art may make various modifications or additions to the specific embodiments described herein or replace them with similar methods without departing from the scope defined in the present application.

Claims

1. A coalescence filtration device, characterized in that: include: A filter element assembly (1) and at least one flotation tube (2), wherein the filter element assembly (1) comprises at least one coalescing filter element (11), the lower end of the coalescing filter element (11) is connected to a liquid outlet pipe (12), the flotation tube (2) is arranged at the lower end of the coalescing filter element (11), the flotation tube (2) is provided with at least one aeration hole (21), and the flotation tube (2) is used to be connected to an air dissolving pump.

2. A coalescence filtration device according to claim 1, characterized in that: The filter element assembly (1) comprises a plurality of coalescing filter elements (11) distributed linearly or in an array.

3. A coalescence filtration device according to claim 2, characterized in that: The upper and lower ends of the coalescing filter element (11) are respectively provided with a top plate (3) and a bottom plate (4); the top plate (3) is respectively provided with at least one upper fixing hole (31) corresponding to the coalescing filter element (11); and the bottom plate (4) is provided with at least one lower fixing hole (41) corresponding to the coalescing filter element (11).

4. A coalescence filtration device according to claim 3, characterized in that: The flotation tube (2) is connected to the upper end of the bottom plate (4), and the flotation tube (2) extends along the arrangement direction of the plurality of coalescing filter elements (11). The flotation tube (2) is provided with a plurality of aeration holes (21) corresponding to the coalescing filter elements (11).

5. A coalescence filtration device according to claim 4, characterized in that: A first manifold (22) is provided on one side of the bottom plate (4), one end of the flotation tube (2) is connected to the first manifold (22), and the first manifold (22) is used to be connected to an air dissolving pump.

6. A coalescence filtration device according to claim 5, characterized in that: A first fixing ring (42) is provided at one end of the bottom plate (4) away from the first pipe manifold (22), and one end of the air flotation tube (2) is inserted into the first fixing ring (42).

7. The coalescence filtration device according to claim 3, characterized in that: The liquid outlet pipe (12) is arranged at the lower end of the bottom plate (4), and the other end of the liquid outlet pipe (12) is connected to a second pipe manifold (13), and the second pipe manifold (13) is provided with a liquid outlet (131).

8. A coalescence filtration device according to claim 7, characterized in that: A downwardly extending fixing plate (43) is provided at the lower end of the bottom plate (4), a second fixing ring (44) is provided on the fixing plate (43) corresponding to the liquid outlet pipe (12), and one end of the liquid outlet pipe (12) is inserted into the second fixing ring (44).

9. The coalescence filtration device according to claim 3, characterized in that: The lower end of the bottom plate (4) is connected to a support plate (5).

10. The coalescence filtration device according to claim 3, characterized in that: The upper end of the top plate (3) is provided with a plurality of hanging rings (32).

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