A modified fibrous coalescing filter

Abstract

The application provides a modified fiber coalescence filter, and relates to a filter which comprises a filter cylinder, filter holes are uniformly arranged on the filter cylinder, end covers are fixedly connected to two ends of the filter cylinder, positioning rotating cylinders are rotationally connected to central positions of the end covers, driven bevel gears are fixedly connected to one end of the positioning rotating cylinders inside the filter cylinder, a driving shaft is rotationally connected to a side wall of the filter cylinder, a driving bevel gear is fixedly connected to an inner end of the driving shaft, the driving bevel gear is meshed with the two driven bevel gears, coalescence filter elements are placed inside the positioning rotating cylinders, and a pre-filtering assembly is further arranged in the filter cylinder. When used, two-stage filtering guarantees the filtering effect, and after the driving shaft is rotated, the positioning rotating shaft is driven to rotate, the adjacent rotating shafts are reversely rotated after the positioning rotating shaft is rotated, the comet-shaped filter elements can switch filtering positions, backwashing of the comet-shaped filter elements is facilitated, and the service life of the filter elements is effectively prolonged.

Description

Technical Field

[0001] This invention relates to the field of filtration technology, and in particular to a modified fiber coalescing filter. Background Technology

[0002] In the petrochemical industry, liquid filtration is frequently required, with coalescing filters and comet filters being the most commonly used types. Simple filters present several problems. Firstly, many filtration devices have complex designs and numerous internal components, leading to high manufacturing costs and significantly increasing the difficulty of use. Secondly, traditional single-stage filtration methods struggle to meet increasingly stringent filtration demands. Single-stage filtration often only removes some impurities from the raw liquid; it cannot achieve efficient and thorough filtration of small particles or complex components, resulting in filtered liquids that fail to meet ideal quality standards.

[0003] Furthermore, as the core component of a filtration device, the lifespan and ease of maintenance of the filter element are also important issues. In existing technologies, filter elements are prone to clogging due to impurities after long-term use, leading to a decrease in filtration efficiency. Moreover, due to limitations in the filter element structure and the overall equipment design, backwashing and other maintenance operations are difficult, and flexible switching of the filter element's filtration position is challenging. This not only increases maintenance costs but also necessitates frequent filter element replacements, severely impacting production efficiency and significantly limiting the widespread application and long-term stable operation of filtration equipment. Therefore, those skilled in the art have proposed a modified fiber coalescing filter to address the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide a modified fiber coalescing filter to solve the technical problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a modified fiber coalescing filter, including a filter cylinder with filter holes evenly distributed on the filter cylinder. End caps are fixedly connected to both ends of the filter cylinder, and positioning cylinders are rotatably connected to the center of each end cap. Driven bevel gears are fixedly connected to one end of each positioning cylinder located inside the filter cylinder. A drive shaft is rotatably connected to the side wall of the filter cylinder, and a driving bevel gear is fixedly connected to the inner end of the drive shaft. The driving bevel gears mesh with two driven bevel gears respectively. A coalescing filter element is placed inside the positioning cylinder, and a pre-filtration component is also provided inside the filter cylinder.

[0006] As a further aspect of the present invention: the pre-filter assembly includes a plurality of positioning shafts rotatably connected to the end cap. The positioning shafts are evenly distributed on the end cap, and the number of positioning shafts is even. An upper driven gear is fixedly connected to one end of each positioning shaft at intervals. A driving gear is fixedly connected to the end of each positioning shaft away from the filter cylinder. The upper driven gears mesh with the driving gears. A lower driven gear is fixedly connected to the outside of each positioning shaft without an upper driven gear. The lower driven gear is located at the end of the positioning shaft away from the upper driven gear and meshes with the driving gear on the other side. A filter unit is fixedly connected to the outside of each positioning shaft.

[0007] As a further embodiment of the present invention: the filter unit includes a rotating plate fixedly connected to the positioning rotating shaft, a positioning pin fixedly connected to the side edge of the rotating plate near the positioning rotating cylinder, and comet-shaped filter elements evenly distributed on the outer side of the positioning pin, with one end of the comet nucleus of the comet-shaped filter element connected to the positioning pin.

[0008] As a further aspect of the present invention: sealing strips are fixedly connected to the edges of the rotating plates away from the positioning cylinders, and the sealing strips of adjacent positioning cylinders cooperate to achieve sealing.

[0009] As a further aspect of the present invention, the sealing strip is made of soft rubber.

[0010] As a further embodiment of the present invention, the number of positioning pivots is 12-30.

[0011] As a further embodiment of the present invention: a drive knob is fixedly connected to the outside of the drive shaft.

[0012] As a further embodiment of the present invention: the outer side of the end cap is connected to a mounting plate via a connecting post, and a discharge pipe is fixedly connected to the mounting plate, the discharge pipe being in communication with the interior of the positioning rotary cylinder.

[0013] By adopting the above technical solution, the present invention has the following beneficial effects:

[0014] This invention features a simple structure and is easy to use. During use, the raw liquid to be filtered enters the filter cylinder through the filter holes, then passes through the filter unit to the innermost part. The comet-shaped filter element in the filter unit performs preliminary filtration of the raw liquid. After filtration, the raw liquid passes through the coalescing filter element for further filtration and is discharged through the discharge pipe. This dual-stage filtration ensures effective filtration. Simultaneously, rotating the drive shaft drives the positioning shaft to rotate. The adjacent shafts rotate in opposite directions, allowing the comet-shaped filter element to switch filtration positions and facilitating backwashing. This effectively improves the filter element's lifespan and is worthy of promotion. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a modified fiber coalescing filter;

[0017] Figure 2 This is a partial structural schematic diagram of a modified fiber coalescing filter;

[0018] Figure 3 This is a schematic diagram of the filter cartridge in a modified fiber coalescing filter;

[0019] Figure 4 This is a schematic diagram of the internal structure of a modified fiber coalescing filter;

[0020] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0021] Figure 6 This is a schematic diagram of the active bevel gear and its partial connection structure in a modified fiber coalescing filter;

[0022] Figure 7 This is a schematic diagram of the positioning rotating cylinder in a modified fiber coalescing filter;

[0023] Figure 8 This is a cross-sectional schematic diagram of a positioning rotating cylinder in a modified fiber coalescing filter;

[0024] Figure 9 This is a schematic diagram of a half-section structure of a modified fiber coalescing filter;

[0025] Figure 10 This is a schematic diagram showing the comparison of the rotating plate before and after rotation in a modified fiber coalescing filter.

[0026] Reference numerals in the attached diagram: 1. Filter cylinder; 2. Filter hole; 3. End cap; 4. Positioning rotary cylinder; 5. Driven bevel gear; 6. Drive shaft; 7. Driving bevel gear; 8. Coalescing filter element; 10. Positioning rotary shaft; 11. Upper driven gear; 12. Driving gear; 13. Lower driven gear; 15. Rotating plate; 16. Positioning pin; 17. Comet-shaped filter element; 18. Sealing strip; 19. Drive knob; 20. Connecting column; 21. Mounting plate; 22. Discharge pipe. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The present invention will be further explained below with reference to specific embodiments.

[0031] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 A modified fiber coalescing filter includes a filter cylinder 1 with filter holes 2 evenly distributed on it. End caps 3 are fixedly connected to both ends of the filter cylinder 1, and a positioning rotating cylinder 4 is rotatably connected to the center of each end cap 3. A driven bevel gear 5 is fixedly connected to one end of each positioning rotating cylinder 4 inside the filter cylinder 1. A drive shaft 6 is rotatably connected to the side wall of the filter cylinder 1, and a drive knob 19 is fixedly connected to the outside of the drive shaft 6. Rotating the drive knob 19 rotates the drive shaft 6. A driving bevel gear 7 is fixedly connected to the inner end of the drive shaft 6, meshing with two driven bevel gears 5. A coalescing filter element 8 is placed inside the positioning rotating cylinder 4, and a pre-filtration assembly is also provided inside the filter cylinder 1.

[0032] When in use, the equipment can be installed and filtration can begin. The raw liquid enters the filter through the filter hole 2 on the filter cylinder 1. Larger impurities can be filtered out when passing through the filter cylinder 1. The raw liquid entering the filter cylinder 1 is the raw liquid that has been pre-filtered. After that, the pre-filtered liquid inside the filter cylinder 1 enters the center of the entire filter after passing through the pre-filtration component. At this point, the liquid will pass through the coalescing filter element 8 inside the positioning rotating cylinder 4, and then be discharged through the positioning rotating cylinder 4.

[0033] Example 2: Please refer to Figure 4 , Figure 5 and Figure 6 This embodiment provides a specific structure of the pre-filtering component based on the previous embodiment: the pre-filtering component includes a plurality of positioning shafts 10 rotatably connected to the end cover 3. The positioning shafts 10 are evenly distributed on the end cover 3. The number of positioning shafts 10 is even. One end of each positioning shaft 10 is fixedly connected with an upper driven gear 11 at intervals. The end of the positioning cylinder 4 away from the filter cylinder 1 is fixedly connected with a driving gear 12. The upper driven gears 11 mesh with the driving gears 12. The outer side of the positioning shaft 10 without upper driven gears 11 is fixedly connected with a lower driven gear 13. The lower driven gear 13 is located at the end of the positioning shaft 10 away from the upper driven gear 11. The lower driven gear 13 meshes with the driving gear 12 on the other side. Filtering units are fixedly connected to the outer side of each positioning shaft 10.

[0034] The pre-filtration assembly includes a filter unit fixedly connected to the positioning shaft 10. Different filter units can be selected according to requirements. For example, circular filter elements are fixed on the outside of the positioning shaft 10, and adjacent circular filter elements are tangent to each other to achieve filtration. By rotating the drive shaft 6, the drive shaft 6 will drive the active bevel gear 7 to rotate, which in turn will drive the driven bevel gear 5 to rotate. The driven bevel gear 5 will synchronously drive the upper and lower positioning cylinders 4 to rotate. The rotation directions of the upper and lower positioning cylinders 4 are opposite. Therefore, during the rotation, the upper and lower different active gears 12 will rotate in different directions. When the active gears 12 rotate in different directions, the upper driven gear 11 and the lower driven gear 13 meshing with them will rotate synchronously. Since the upper driven gear 11 and the lower driven gear 13 on the outside of the positioning shaft 10 are staggered, the rotation directions between adjacent positioning shafts 10 are opposite. Therefore, the filter units on the outside of adjacent positioning shafts 10 will rotate relative to each other or rotate away from each other.

[0035] Please see Figure 7 , Figure 8 and Figure 9The filter unit includes a rotating plate 15 fixedly connected to the positioning shaft 10. Positioning pins 16 are fixedly connected to the side edge of the rotating plate 15 near the positioning cylinder 4. Comet-shaped filter elements 17 are evenly distributed on the outer side of the positioning pins 16, with one end of the comet nucleus of each filter element 17 connected to the positioning pin 16. Sealing strips 18 are fixedly connected to the edges of the rotating plate 15 away from the positioning cylinder 4. The sealing strips 18 of adjacent positioning cylinders 4 cooperate to achieve a seal. When the comet-shaped filter elements 17 are adjusted to their correct positions, the sealing strips 18 on the other side of the rotating plate 15 will abut against each other, thus achieving a seal. The sealing strips 18 are made of soft rubber to ensure a good seal.

[0036] The inner ends of adjacent rotating plates 15 are either close together or far apart. In the initial stage, two adjacent rotating plates 15 are brought together, and their close-to-each side edges are connected to comet-shaped filter elements 17 through positioning pins 16. Thus, the comet-shaped filter elements 17 can be used for preliminary filtration. The comet-shaped filter elements 17 have a comet nucleus end and a comet tail end. During the preparation of the device, the positioning pins 16 are used to pass through the comet nucleus of the comet-shaped filter elements 17 in sequence and adjust the position of the comet tail to a suitable position. During filtration, the excellent filtration performance of the comet-shaped filter elements 17 can be fully utilized. After filtration for a period of time, the positioning shaft 10 is rotated, the rotating plates 15 rotate, the comet-shaped filter elements 17 separate from the other comet-shaped filter elements 17 that are adjacent to it, and then move closer to the comet-shaped filter elements 17 on the other side to form a new filtration unit.

[0037] The advantages of this are twofold: First, separating the comet-shaped filter element 17 allows for better backwashing to clean it, as the cleaning effect is poor when they are piled together. Second, forming a new filtration unit disrupts the original filtration structure, reducing filtration dead zones. For example, previously, the right side of the comet-shaped filter element 17 was adjacent to the rotating plate 15; after adjustment, the left side will be adjacent to the rotating plate 15. The filtrate is filtered through the gap between the two rotating plates 15. Due to the obstruction of the comet tail, the central flow rate is relatively larger. This adjustment changes the center position of the filter, allowing the comet-shaped filter element 17 to achieve the most thorough filtration effect. The positioning pin 16 can be connected to the rotating plate 15 via a snap-fit ​​mechanism, and the filtered raw liquid can then be discharged through the discharge pipe 22. Please refer to [link / reference]. Figure 10 , Figure 10 The specific changes in the position of the comet-shaped filter element 17 before and after the adjustment are shown, and the positioning shaft 10 before and after the change is marked as the same shaft.

[0038] The number of positioning shafts 10 is 12-30. The number of positioning shafts 10 determines the number of comet-shaped filter elements 17. The number should not be too small, as too few comet-shaped filter elements 17 will lead to reduced filtration efficiency and a cumbersome, less compact structure. On the other hand, too many will significantly increase the structural complexity, make it prone to failure, and increase production difficulty.

[0039] An installation plate 21 is connected to the outside of the end cap 3 via a connecting post 20. A discharge pipe 22 is fixedly connected to the installation plate 21, and the discharge pipe 22 communicates with the inside of the positioning rotary drum 4.

[0040] Working principle: Once the equipment is installed, filtration can begin. The raw liquid enters the filter through the filter hole 2 on the filter cylinder 1. Larger impurities are filtered out as the liquid passes through the filter cylinder 1. The raw liquid entering the filter cylinder 1 is the initially filtered raw liquid. After passing through the pre-filtration component, the initially filtered liquid in the filter cylinder 1 enters the center of the entire filter. At this point, the liquid will pass through the coalescing filter element 8 inside the positioning rotating cylinder 4, and then be discharged through the positioning rotating cylinder 4.

[0041] The pre-filtration assembly includes a filter unit fixedly connected to the positioning shaft 10. Different filter units can be selected according to requirements. For example, circular filter elements are fixed on the outside of the positioning shaft 10, and adjacent circular filter elements are tangent to each other to achieve filtration. By rotating the drive shaft 6, the drive shaft 6 will drive the active bevel gear 7 to rotate, which in turn will drive the driven bevel gear 5 to rotate. The driven bevel gear 5 will synchronously drive the upper and lower positioning cylinders 4 to rotate. The rotation directions of the upper and lower positioning cylinders 4 are opposite. Therefore, during the rotation, the upper and lower different active gears 12 will rotate in different directions. When the active gears 12 rotate in different directions, the upper driven gear 11 and the lower driven gear 13 meshing with them will rotate synchronously. Since the upper driven gear 11 and the lower driven gear 13 on the outside of the positioning shaft 10 are staggered, the rotation directions between adjacent positioning shafts 10 are opposite. Therefore, the filter units on the outside of adjacent positioning shafts 10 will rotate relative to each other or rotate away from each other.

[0042] The inner ends of adjacent rotating plates 15 are either close together or far apart. In the initial stage, two adjacent rotating plates 15 are brought together, and their close-to-each side edges are connected to comet-shaped filter elements 17 through positioning pins 16. Thus, the comet-shaped filter elements 17 can be used for preliminary filtration. The comet-shaped filter elements 17 have a comet nucleus end and a comet tail end. During the preparation of the device, the positioning pins 16 are used to pass through the comet nucleus of the comet-shaped filter elements 17 in sequence and adjust the position of the comet tail to a suitable position. During filtration, the excellent filtration performance of the comet-shaped filter elements 17 can be fully utilized. After filtration for a period of time, the positioning shaft 10 is rotated, the rotating plates 15 rotate, the comet-shaped filter elements 17 separate from the other comet-shaped filter elements 17 that are adjacent to it, and then move closer to the comet-shaped filter elements 17 on the other side to form a new filtration unit.

[0043] The advantages of this are twofold: First, separating the comet-shaped filter element 17 allows for better cleaning via backwashing, as the cleaning effect is poor when they are piled together. Second, the formation of a new filtration unit disrupts the original filtration structure, reducing filtration dead zones. For example, previously, the right side of the comet-shaped filter element 17 was adjacent to the rotating plate 15; after adjustment, the left side will be adjacent to the rotating plate 15. The filtrate is filtered through the gap between the two rotating plates 15. Due to the obstruction of the comet tail, the central flow rate is relatively larger. This adjustment changes the center position of the filter, allowing the comet-shaped filter element 17 to achieve the most thorough filtration effect. The positioning pin 16 can be connected to the rotating plate 15 via a snap-fit ​​mechanism, and the filtered raw liquid can then be discharged through the discharge pipe 22.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modified fiber coalescing filter, comprising a filter cylinder (1), wherein filter holes (2) are evenly distributed on the filter cylinder (1), and end caps (3) are fixedly connected to both ends of the filter cylinder (1), characterized in that, The center of the end cap (3) is rotatably connected to a positioning cylinder (4). One end of the positioning cylinder (4) located inside the filter cylinder (1) is fixedly connected to a driven bevel gear (5). The side wall of the filter cylinder (1) is rotatably connected to a drive shaft (6). The inner end of the drive shaft (6) is fixedly connected to an active bevel gear (7). The active bevel gear (7) meshes with two driven bevel gears (5) respectively. The positioning cylinder (4) contains a coalescing filter element (8). The filter cylinder (1) also contains a pre-filter assembly. The pre-filter assembly includes several positioning shafts (10) rotatably connected to the end cap (3). The positioning shafts (10) are evenly distributed on the end cap (3). The number of positioning shafts (10) is even. One end of each positioning shaft (10) is fixedly connected with an upper driven gear (11). The end of the positioning cylinder (4) away from the filter cylinder (1) is fixedly connected with a driving gear (12). The upper driven gears (11) mesh with the driving gears (12). The outer side of the positioning shaft (10) without upper driven gears (11) is fixedly connected with a lower driven gear (13). The lower driven gear (13) is located at the end of the positioning shaft (10) away from the upper driven gear (11). The lower driven gear (13) meshes with the driving gear (12) on the other side. The outer side of each positioning shaft (10) is fixedly connected with a filter unit. The filter unit includes a rotating plate (15) fixedly connected to the positioning rotating shaft (10). A positioning pin (16) is fixedly connected to the side edge of the rotating plate (15) near the positioning rotating cylinder (4). Comet-type filter elements (17) are evenly distributed on the outside of the positioning pin (16). One end of the comet nucleus of the comet-type filter element (17) is connected to the positioning pin (16). Each of the rotating plates (15) is fixedly connected with a sealing strip (18) at the edge away from the positioning rotating cylinder (4), and the sealing strips (18) of adjacent rotating plates (15) cooperate to achieve sealing. A drive knob (19) is fixedly connected to the outside of the drive shaft (6). The outer side of the end cap (3) is connected to the mounting plate (21) via the connecting column (20). The mounting plate (21) is fixedly connected to the discharge pipe (22), which is connected to the inside of the positioning drum (4).

2. The modified fiber coalescing filter according to claim 1, characterized in that, The sealing strip (18) is made of soft rubber.

3. The modified fiber coalescing filter according to claim 1, characterized in that, The number of positioning pivots (10) is 12-30.

Images