Coalescence and separation filter element of aviation fuel filter

Abstract

The utility model discloses an aviation fuel filter coalescence separation filter element which comprises an outer shell, a liquid inlet pipe is installed at the top end of the outer shell, a bottom cover is installed at the bottom end of the outer shell, an installation mechanism is arranged on the bottom cover, and the installation mechanism comprises a fixing sleeve, an installation groove, a sliding rod, a clamping block, an insertion rod, an insertion block and a clamping groove. The fixing sleeve is installed on the shell, the multiple sets of installation grooves are distributed in the fixing sleeve, the multiple sets of sliding rods are arranged in the multiple sets of installation grooves correspondingly, the clamping blocks are installed at the inner ends of the multiple sets of sliding rods and are in sliding connection with the installation grooves, and the multiple sets of filtering layers are arranged in the shell; the filter comprises a pre-filter layer, a coalescence layer, a separation layer and a fine filter layer, and the multiple filter layers are sequentially installed in the shell so as to solve the technical problems that in the background technology, moisture and impurities in fuel oil cannot be fully removed, so that the performance and the service life of an engine are affected, a filter element is inconvenient to replace, and the maintenance cost and time are increased.

Description

Technical Field

[0001] This utility model relates to the field of aviation fuel technology, and more specifically, to an aviation fuel filter coalescing separator element. Background Technology

[0002] In aviation fuel systems, ensuring fuel purity is crucial for aircraft safety and performance. Traditional fuel filtration systems may lack effective installation mechanisms and multi-layered filtration structures, resulting in insufficient removal of moisture and impurities from the fuel, thus affecting engine performance and lifespan.

[0003] Traditional fuel filtration systems may only use simple filter layers, which cannot effectively separate water and fine impurities in fuel. In addition, the lack of an effective installation mechanism may lead to inconvenient filter element replacement, increasing maintenance costs and time. Therefore, there is a need for an aviation fuel filter coalescing separator element with a multi-layer filtration structure and convenient installation mechanism. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an aviation fuel filter coalescing separator element to solve the technical problems mentioned in the background art, such as the inability to fully remove water and impurities in fuel, thereby affecting engine performance and life, and the inconvenience of filter element replacement, which increases maintenance costs and time.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an aviation fuel filter coalescing and separating filter element, comprising a housing, an inlet pipe installed at the top of the housing, a bottom cover installed at the bottom of the housing, and an installation mechanism provided on the bottom cover. The installation mechanism includes a fixing sleeve, an installation groove, a sliding rod, a locking block, an insert rod, an insert block, and a locking groove. The fixing sleeve is installed on the housing, and multiple sets of installation grooves are distributed within the fixing sleeve. Multiple sets of sliding rods are respectively disposed within the multiple sets of installation grooves. The locking block is installed at the inner end of the multiple sets of sliding rods and slidably connected to the installation groove. The insert rod penetrates the bottom cover and is inserted into the fixing sleeve. The insert block is installed at the top of the insert rod. Multiple sets of locking grooves are distributed on the outer wall of the insert block. Multiple filter layers are disposed inside the housing, including a pre-filtration layer, a coalescing layer, a separating layer, and a fine filtration layer, and the multiple filter layers are sequentially installed inside the housing.

[0008] The present invention is further configured such that a locking mechanism is provided on the outer wall of the insert rod. The locking mechanism includes a locking sleeve, a locking block, a pressure ring, and a control sleeve. The locking sleeve is slidably installed on the outer wall of the insert rod, the locking block is installed on the top of the locking sleeve, the pressure ring is installed on the outer wall of the locking sleeve, and the control sleeve is rotatably installed on the bottom of the insert rod. This design ensures the stability of the filter element during operation and prevents the filter element from loosening, thereby ensuring the stable operation of the fuel system.

[0009] The present invention is further configured such that a push spring is connected between each of the multiple sets of the locking blocks and the inner end of the slide groove, and a stop block is installed on the outer end of each of the multiple sets of the slide rods extending out of the fixing sleeve. The push spring provides a counterforce to maintain the stability of the locking blocks and prevent the locking blocks from shifting due to vibration or impact.

[0010] The present invention is further configured such that a positioning strip is installed on the outer wall of the insert block, and a positioning groove is opened on the inner wall of the fixing sleeve. Multiple sets of positioning strips and positioning grooves are provided and slidably connected. This design increases the number of positioning points, improves the accuracy of fixing, prevents the filter element from shifting during operation, and ensures the stable operation of the fuel system.

[0011] The present invention is further configured such that a slide bar is installed on the outer wall of the insertion rod, and a sliding groove is opened on the inner wall of the locking sleeve. Multiple sets of slide bars and sliding grooves are provided and slidably connected. This design realizes the flexible operation of the locking mechanism and ensures the secure locking of the filter element.

[0012] The present invention is further configured such that the outer wall of the lock sleeve is provided with an external thread, and the inner side of the top end of the control sleeve is provided with an internal thread and is threadedly connected to the lock sleeve.

[0013] The present invention is further configured such that the pre-filter layer is made of coarse fiber material with a larger pore size to facilitate the rapid passage of fuel, and the fine filter layer is made of fine fiber material with a smaller pore size to capture finer contaminants.

[0014] The present invention is further configured such that the control sleeve is provided with a positioning mechanism, the positioning mechanism including positioning holes, positioning blocks and compression springs. Multiple sets of positioning holes are distributed on the outer wall of the bottom end of the insertion rod, and multiple sets of positioning blocks are slidably installed on the inner side of the control sleeve. Multiple sets of compression springs are provided with their ends respectively connected to the top ends of the multiple sets of positioning blocks and the outer wall of the control sleeve. This design increases the number of positioning points, improves the accuracy of fixing, prevents the control sleeve from shifting during operation, and ensures the stable operation of the fuel system.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an aviation fuel filter coalescing separator element, which has the following beneficial effects:

[0017] 1. Benefits of the installation mechanism: The installation mechanism, through the design of a fixing sleeve, mounting groove, sliding rod, locking block, insertion rod, insertion block, and locking slot, enables convenient installation and replacement of the filter element. The cooperation between the fixing sleeve and the mounting groove ensures stable installation of the filter element, the sliding connection of the sliding rod and the locking block allows the filter element to be easily inserted or removed, the cooperation between the insertion rod and the insertion block provides the function of fixing and locking the filter element, and the locking slot ensures the correct position of the filter element. This design simplifies the filter element replacement process and improves maintenance efficiency.

[0018] 2. Beneficial effects of multiple filter layers: The multiple filter layers include a pre-filter layer, a coalescing layer, a separating layer, and a fine filter layer. They are arranged in sequence and work together to provide efficient filtration and separation. The pre-filter layer captures larger solid particles and impurities, the coalescing layer agglomerates tiny water droplets into larger droplets, the separating layer prevents water droplets from passing through while allowing fuel to continue flowing, and the fine filter layer further removes fine contaminants. This multi-layer filtration structure ensures fuel purity and reduces wear and the risk of malfunctions inside the engine.

[0019] 3. Beneficial effects of the locking mechanism: The locking mechanism, through the design of the locking sleeve, locking block, pressure ring, and control sleeve, achieves a firm lock on the filter element. The cooperation of the locking sleeve and locking block ensures the fixation of the filter element, the pressure ring provides additional pressure, and the rotation of the control sleeve enables the operation of the locking mechanism. This design prevents the filter element from loosening during operation and ensures the stable operation of the fuel system.

[0020] 4. Beneficial effects of the positioning mechanism: The positioning mechanism achieves precise positioning of the control sleeve through the design of positioning holes, positioning blocks, and compression springs. The cooperation of the positioning holes and positioning blocks ensures the correct position of the control sleeve, the compression spring provides additional pressure, and the sliding connection of the positioning blocks enables the adjustment of the control sleeve. This design increases the number of positioning points, improves the accuracy of fixing, prevents the control sleeve from shifting during operation, and ensures the stable operation of the fuel system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an aviation fuel filter coalescing separator element according to the present invention;

[0022] Figure 2 This is a cross-sectional view of the outer shell of this utility model;

[0023] Figure 3 This is a cross-sectional view of the installation mechanism in this utility model;

[0024] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0025] Figure 5This is a cross-sectional view of the locking mechanism and the positioning mechanism in this utility model.

[0026] In the diagram: 1. Outer shell; 2. Inlet pipe; 3. Bottom cover; 4. Fixing sleeve; 5. Mounting groove; 6. Slide rod; 7. Locking block; 8. Insert rod; 9. Inserting block; 10. Locking groove; 11. Pre-filtration layer; 12. Cohesion layer; 13. Separation layer; 14. Fine filtration layer; 15. Locking sleeve; 16. Locking block; 17. Pressure ring; 18. Control sleeve; 19. Push spring; 20. Stop block; 21. Positioning strip; 22. Positioning groove; 23. Slide bar; 24. Slide groove; 25. Positioning hole; 26. Positioning block; 27. Compression spring. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A coalescing and separating filter element for aviation fuel includes a housing 1, an inlet pipe 2 installed at the top of the housing 1, and a bottom cover 3 installed at the bottom of the housing 1. The bottom cover 3 is provided with an installation mechanism, which includes a fixing sleeve 4, an installation groove 5, a sliding rod 6, a locking block 7, an insert rod 8, an insert block 9, and a locking groove 10. The fixing sleeve 4 is installed on the housing 1. Multiple sets of installation grooves 5 are distributed within the fixing sleeve 4. Multiple sets of sliding rods 6 are respectively arranged within the multiple sets of installation grooves 5. The locking block 7 is installed at the inner end of the multiple sets of sliding rods 6 and is slidably connected to the installation groove 5. The insert rod 8 penetrates the bottom cover 3 and is inserted into the fixing sleeve 4. The insert block 9 is installed at the top of the insert rod 8. Multiple sets of locking grooves 10 are distributed on the outer wall of the insert block 9. Multiple filter layers are provided inside the housing 1, including a pre-filtration layer 11, a coalescing layer 12, a separation layer 13, and a fine filtration layer 14. The multiple filter layers are sequentially installed inside the housing 1.

[0031] The outer wall of the insertion rod 8 is provided with a locking mechanism, which includes a locking sleeve 15, a locking block 16, a pressure ring 17 and a control sleeve 18. The locking sleeve 15 is slidably installed on the outer wall of the insertion rod 8, the locking block 16 is installed on the top of the locking sleeve 15, the pressure ring 17 is installed on the outer wall of the locking sleeve 15, and the control sleeve 18 is rotatably installed on the bottom of the insertion rod 8. When it is necessary to lock the filter element, by rotating the control sleeve 18, the locking sleeve 15 and the locking block 16 are engaged, and the filter element is fixed in the outer shell 1.

[0032] Each set of locking blocks 7 is connected to the inner end of the slide groove 24 with a push spring 19, and each set of sliding rods 6 extends out of the fixing sleeve 4 and is equipped with a stop block 20.

[0033] The outer wall of the insert 9 is provided with a positioning strip 21, and the inner wall of the fixing sleeve 4 is provided with a positioning groove 22. Multiple sets of positioning strips 21 and positioning grooves 22 are provided and are slidably connected. The positioning strip 21 slides in the positioning groove 22 to ensure that the locking sleeve 15 is correctly installed in the fixed position.

[0034] A slide bar 23 is installed on the outer wall of the insertion rod 8, and a slide groove 24 is opened on the inner wall of the locking sleeve 15. Multiple sets of slide bars 23 and slide grooves 24 are provided and are slidably connected. When the control sleeve 18 rotates, the slide bar 23 moves in the slide groove 24, driving the locking sleeve 15 to move along the axial direction of the insertion rod 8.

[0035] The outer wall of the lock sleeve 15 is provided with external threads, and the inner side of the top of the control sleeve 18 is provided with internal threads and is threadedly connected to the lock sleeve 15.

[0036] The pre-filter layer 11 is made of coarse fiber material with a large pore size to allow fuel to pass through quickly, while the fine filter layer 14 is made of fine fiber material with a smaller pore size to capture finer contaminants.

[0037] In this embodiment, multiple filter layers are sequentially installed inside the outer casing 1. Then, the bottom cover 3 is fastened to the bottom of the outer casing 1. The insert rod 8 is inserted through the bottom cover 3 and into the fixing sleeve 4. The inclined surface at the top of the insert block 9 pushes multiple sets of locking blocks 7 to slide along multiple sets of mounting grooves 5. When the insert block 9 is fully inserted into the fixing sleeve 4, the multiple sets of locking blocks 7 are pushed into the slot 10 by multiple sets of push springs 19. Then, the control sleeve 18 is rotated to make it threadedly engage with the locking sleeve 15, so that the locking sleeve 15 slides along the insert rod 8, pushing the locking block 16 to abut against the bottom surface of the insert block 9. At the same time, the compression spring 27 presses the bottom cover 3, thus completing the installation of the bottom cover 3. When fuel enters the filter, it first passes through the pre-filter layer 11 to remove larger solid particles and impurities. Then, the fuel enters the coalescing layer 12, where tiny water droplets are coalesced into larger water droplets. Next, the fuel enters the separation layer 13, where the coalesced water droplets are separated. Finally, the fuel passes through the fine filter layer 14 to further remove fine contaminants.

[0038] Please see Figure 5As an embodiment of the positioning mechanism for an aviation fuel filter coalescing and separating filter element: a positioning mechanism is provided on the control sleeve 18. The positioning mechanism includes positioning holes 25, positioning blocks 26 and compression springs 27. Multiple sets of positioning holes 25 are distributed on the outer wall of the bottom end of the insertion rod 8. Multiple sets of positioning blocks 26 are slidably installed on the inner side of the control sleeve 18. Multiple sets of compression springs 27 are provided with their two ends respectively connected to the top ends of multiple sets of positioning blocks 26 and the outer wall of the control sleeve 18.

[0039] More specifically, when the control sleeve 18 rotates, the positioning block 26 attempts to enter the positioning hole 25 on the outside of the insertion rod 8 under the action of the compression spring 27. Once the positioning block 26 enters the positioning hole 25, the position of the control sleeve 18 is fixed. If the position needs to be adjusted, it is only necessary to overcome the pressure of the compression spring 27 to make the positioning block 26 disengage from the positioning hole 25. The setting of multiple sets of positioning blocks 26 and positioning grooves 22 increases the positioning points, increases the accuracy of fixing, and prevents the bottom cover 3 from being unstable due to accidental rotation of the control sleeve 18.

[0040] In summary, during the use or operation of the entire device: multiple filter layers are sequentially installed inside the outer casing 1, then the bottom cover 3 is fastened to the bottom of the outer casing 1. The insertion rod 8 is inserted through the bottom cover 3 into the fixing sleeve 4. The inclined surface at the top of the insertion block 9 pushes multiple sets of locking blocks 7 to slide along multiple sets of mounting grooves 5. When the insertion block 9 is fully inserted into the fixing sleeve 4, the multiple sets of locking blocks 7 are pushed into the locking groove 10 by multiple sets of push springs 19. Then, the control sleeve 18 is rotated to make it threadedly engage with the locking sleeve 15, so that the locking sleeve 15 moves along the insertion rod. 8 slides to push the locking block 16 to abut against the bottom surface of the insert block 9, and at the same time, the compression spring 27 presses the bottom cover 3 to complete the installation of the bottom cover 3. When fuel enters the filter, it first passes through the pre-filter layer 11 to remove larger solid particles and impurities. Then, the fuel enters the coalescing layer 12, where tiny water droplets are coalesced into larger water droplets. Next, the fuel enters the separation layer 13, where the coalesced water droplets are separated. Finally, the fuel passes through the fine filter layer 14 to further remove fine contaminants.

[0041] When the control sleeve 18 rotates, the positioning block 26 attempts to enter the positioning hole 25 on the outside of the insertion rod 8 under the action of the compression spring 27. Once the positioning block 26 enters the positioning hole 25, the position of the control sleeve 18 is fixed. If the position needs to be adjusted, the pressure of the compression spring 27 can be overcome to make the positioning block 26 disengage from the positioning hole 25. The setting of multiple sets of positioning blocks 26 and positioning grooves 22 increases the positioning points, increases the accuracy of fixing, and prevents the bottom cover 3 from being unstable due to accidental rotation of the control sleeve 18.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An aviation fuel filter coalescing separator element, comprising a housing (1), characterized in that: The top of the outer shell (1) is provided with an inlet pipe (2), and the bottom of the outer shell (1) is provided with a bottom cover (3). The bottom cover (3) is provided with an installation mechanism, which includes a fixing sleeve (4), an installation groove (5), a slide rod (6), a locking block (7), an insertion rod (8), an insertion block (9), and a locking groove (10). The fixing sleeve (4) is installed on the outer shell (1). The installation groove (5) is provided with multiple sets distributed inside the fixing sleeve (4). The slide rod (6) is provided with multiple sets respectively disposed in the multiple sets of the installation grooves (4). 5) Inside, the card block (7) is installed at the inner end of multiple sets of sliding rods (6) and is slidably connected with the mounting groove (5). The insertion rod (8) passes through the bottom cover (3) and is inserted into the fixing sleeve (4). The insertion block (9) is installed at the top of the insertion rod (8). The card groove (10) is provided with multiple sets distributed on the outer wall of the insertion block (9). Multiple sets of filter layers are provided inside the outer shell (1), including a pre-filter layer (11), a coalescing layer (12), a separation layer (13) and a fine filter layer (14). Multiple sets of filter layers are installed in the outer shell (1) in sequence.

2. The aviation fuel filter coalescing separator element according to claim 1, characterized in that: The outer wall of the insertion rod (8) is provided with a locking mechanism, which includes a locking sleeve (15), a locking block (16), a pressure ring (17) and a control sleeve (18). The locking sleeve (15) is slidably installed on the outer wall of the insertion rod (8), the locking block (16) is installed on the top of the locking sleeve (15), the pressure ring (17) is installed on the outer wall of the locking sleeve (15), and the control sleeve (18) is rotatably installed on the bottom of the insertion rod (8).

3. The aviation fuel filter coalescing separator element according to claim 2, characterized in that: multiple sets A push spring (19) is connected between the card block (7) and the inner end of the slide groove (24), and a stop block (20) is installed on the outer end of the multiple sets of slide rods (6) extending out of the fixing sleeve (4).

4. The aviation fuel filter coalescing separator element according to claim 3, characterized in that: The outer wall of the insert (9) is provided with a positioning strip (21), and the inner wall of the fixing sleeve (4) is provided with a positioning groove (22). The positioning strip (21) and the positioning groove (22) are provided in multiple sets and are slidably connected.

5. The aviation fuel filter coalescing separator element according to claim 4, characterized in that: The outer wall of the insertion rod (8) is provided with a slide bar (23), and the inner wall of the lock sleeve (15) is provided with a slide groove (24). The slide bar (23) and the slide groove (24) are provided with multiple sets and are slidably connected.

6. The aviation fuel filter coalescing separator element according to claim 5, characterized in that: The outer wall of the lock sleeve (15) is provided with an external thread, and the inner side of the top end of the control sleeve (18) is provided with an internal thread and is threadedly connected to the lock sleeve (15).

7. The aviation fuel filter coalescing separator element according to claim 6, characterized in that: The pre-filter layer (11) is made of coarse fiber material with a large pore size to allow fuel to pass through quickly, while the fine filter layer (14) is made of fine fiber material with a smaller pore size to capture finer contaminants.

8. The aviation fuel filter coalescing separator element according to claim 7, characterized in that: The control sleeve (18) is provided with a positioning mechanism, which includes positioning holes (25), positioning blocks (26) and compression springs (27). The positioning holes (25) are provided in multiple sets distributed on the outer wall of the bottom end of the insertion rod (8). The positioning blocks (26) are provided in multiple sets and are slidably installed on the inner side of the control sleeve (18). The compression springs (27) are provided in multiple sets with their ends respectively connected to the top of the positioning blocks (26) and the outer wall of the control sleeve (18).

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