Aviation oil filter element cleaning inlet and outlet device

Abstract

This invention belongs to the field of aircraft component cleaning and processing, specifically disclosing an aviation oil filter element cleaning and feeding device. It includes a cover for sealing the cleaning chamber, a clamping mechanism for holding the filter element, and a lifting mechanism for driving the clamping mechanism to move up and down within the cleaning chamber. The lifting mechanism includes a sliding component for driving the clamping mechanism to slide vertically and a flipping component for pushing the cover to flip. The flipping component includes a sliding plate slidably connected to the cover and a support rod hinged to the sliding plate. The sliding component includes a drive block slidably connected vertically within the cleaning chamber and a lifting rod detachably connected to the drive block. The support rod and the lifting rod are connected, and the lifting rod drives the support rod to move vertically. The clamping mechanism has multiple sets of clamps along the circumference of the support rod for clamping the filter element circumferentially. The lifting rod or support rod drives the clamping mechanism to move vertically. Using this invention, the problem of inconvenient filter element handling can be solved.

Description

Technical Field

[0001] This invention belongs to the field of aircraft component cleaning and processing, and specifically relates to an infeed and discharge device for cleaning aviation oil filter elements. Background Technology

[0002] The fuel filters used in aircraft engines are generally high-pressure filters, and a portion of the filtered oil is used in the antifreeze fuel control system. As flight time increases, the oil filter element becomes increasingly contaminated, requiring regular cleaning. Otherwise, the filter element will become clogged, affecting the cleanliness of the oil and the smoothness of the oil flow, causing impurities to accumulate in the engine and insufficient fuel supply, thus affecting the normal operation of the aircraft.

[0003] In existing technologies, filter element cleaning is usually done manually or by using cleaning equipment. When using cleaning equipment, the filter element needs to be placed in a cleaning tank, where it is cleaned by the cleaning fluid. Common cleaning methods are ultrasonic cleaning or air pressure cleaning. During the cleaning process, ultrasonic waves or air pressure will cause the cleaning fluid in the cleaning tank to vibrate and flow, thus cleaning the filter element. However, the flow of the cleaning fluid will also cause the filter element to move within the cleaning tank, which may cause the filter element to collide with the inner wall of the cleaning tank or even be damaged.

[0004] To address the aforementioned issues, existing technologies typically employ a fixing mechanism within the cleaning chamber to secure the filter element, ensuring it remains in a designated position within the chamber. For instance, patent CN202020091590.4 discloses an aircraft oil filter element cleaning device. This device utilizes a fixed column and several compression plates circumferentially connected to the fixed column within the cleaning chamber, with springs connecting the compression plates and the fixed column. The filter element is fitted onto the outside of the compression plates, and the spring force of the compression plates holds the filter element in place. However, while this patent prevents the filter element from moving within the cleaning chamber, it still presents the problem of inconvenient filter element removal and placement. The compression plates, under the spring force, provide a tight hold on the filter element, resulting in significant friction between the inner wall of the filter element and the compression plates when the filter element is fitted onto or removed from the compression plates, potentially damaging the filter element. Furthermore, the tight fit between the compression plates and the inner wall of the filter element makes it difficult to thoroughly clean the contact area between the inner wall of the filter element and the compression plates. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an aviation oil filter element cleaning feed and discharge device to solve the problem of inconvenient filter element handling.

[0006] According to embodiments of the present invention, the present invention adopts the following technical solution:

[0007] An aviation oil filter element cleaning inlet and outlet device includes a cover for sealing the cleaning chamber, the end of which is hinged to the cleaning chamber. It also includes a clamping mechanism for holding the filter element and a lifting mechanism for driving the clamping mechanism to move up and down within the cleaning chamber. The lifting mechanism includes a sliding component for driving the clamping mechanism to slide vertically and a flipping component for pushing the cover to flip. The flipping component includes a sliding plate slidably connected to the cover and a support rod hinged to the sliding plate. The sliding component includes a drive block slidably connected vertically within the cleaning chamber and a lifting rod detachably connected to the drive block. The support rod and the lifting rod are connected, and the lifting rod drives the support rod to move vertically. The clamping mechanism has multiple sets of clamps along the circumference of the support rod for clamping the filter element circumferentially. The lifting rod or support rod drives the clamping mechanism to move vertically.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] As the cleaning chamber is opened or closed by flipping the cover, the sliding plate slides on the cover, causing the support rod to rise and fall. This allows the clamping mechanism to be pulled out to the opening of the cleaning chamber or inserted into the chamber. The clamping mechanism holds the filter element, facilitating its placement and removal. Furthermore, during the cleaning process, the clamping mechanism remains inside the cleaning chamber, securing the filter element and ensuring it remains in the designated position for easier cleaning. This also prevents the filter element from moving and colliding with the inner walls of the cleaning chamber.

[0010] When the filter element is pulled out to the opening of the cleaning tank by the clamping mechanism, it is suspended inside the tank. At this time, the cover also opens the tank, facilitating the draining and drying of the filter element. Then, loosen the connection between the lifting rod and the drive block, and rotate the support rod from a vertical position to a horizontal or tilted position. The cleaned filter element can then be rotated out of the cleaning tank opening via the support rod. At this point, the cleaned filter element can be removed, or a new filter element to be cleaned can be replaced, making it convenient to handle.

[0011] In this solution, the opening and closing of the cover and the lifting and placing of the clamping mechanism are combined. The clamping mechanism limits the filter element during the cleaning process without affecting the placement and removal of the filter element. At the same time, the opening and closing of the cover can be realized simultaneously, making it convenient to pick up and put down.

[0012] Furthermore, the clamping mechanism includes a connecting rod connected to the support rod, a hinge rod hinged to the connecting rod in the middle, and a limiting rod and a clamping rod respectively hinged to both ends of the hinge rod. The two ends of the hinge rod are respectively fixed with limiting blocks for limiting the deflection angle of the clamping rod and the limiting rod.

[0013] Beneficial effects: Since the clamping rod needs to hold the filter element in place, it needs to clamp the filter element tightly. This makes it difficult to clean the contact point between the clamping rod and the filter element thoroughly. In this solution, the limiting rod and clamping rod are designed to be hinged at both ends of the hinge rod. By rotating the hinge rod, the limiting rod and clamping rod can move vertically. The limiting rod and clamping rod remain vertical under their own weight. The limiting rod and clamping rod alternately contact the filter element and limit its movement, thus switching the contact points between the clamping mechanism and the filter element, resulting in more comprehensive cleaning of the filter element. The limiting rod and clamping rod are also restricted by the limiting block, which can prevent the limiting rod or clamping rod from deflecting when the filter element moves too far within the cleaning chamber.

[0014] Furthermore, the clamping rod and the limiting rod are used to position the outer wall and inner wall of the filter element, respectively. The opposite sides of the clamping rod and the limiting rod are provided with inclined guide surfaces, and the free ends of the guide surfaces on the clamping rod and the limiting rod are inclined in a direction away from each other.

[0015] Beneficial effects: The guide surface facilitates the guiding and positioning of the clamping rod and the limiting rod when they come into contact with the filter element during vertical movement.

[0016] Furthermore, a hinge shaft is fixed in the middle of the hinge rod, the hinge shaft is rotatably connected to the connecting rod, and a torsion spring is installed between the hinge shaft and the connecting rod; a connecting rope is connected between the lifting rod and the hinge shaft, one end of the connecting rope is fixed to the lifting rod, and the other end of the connecting rope is wrapped around the hinge shaft and then fixed to the hinge shaft.

[0017] Beneficial effects: The reciprocating sliding of the lifting rod achieves the reciprocating rotation of the hinge rod. Specifically, when the lifting rod slides upward, the connecting rope pulls the hinge shaft to rotate in the forward direction, causing the hinge rod to move the limit rod upward and the clamping rod downward. When the lifting rod moves downward, the connecting rope no longer exerts an upward pulling force on the hinge shaft, and the hinge shaft rotates in the opposite direction under the restoring force of the torsion spring, causing the limit rod to move downward and the clamping rod to move upward. In this solution, the reciprocating sliding of the lifting rod achieves alternating contact between the limit rod, the clamping rod, and the filter element.

[0018] Furthermore, an airbag is fixed on the clamping rod; an annular cylinder is fixed on the support rod, with one end of the annular cylinder closed and the other end open. An annular plate is slidably connected inside the annular cylinder along its axial direction. The connecting rod is connected to the annular plate, and an air tube connects the closed end of the annular cylinder to the airbag.

[0019] Beneficial Effects: Since the clamping rod needs to hold the filter element in motion, it must clamp the filter element tightly. Therefore, when the clamping rod and the limiting rod alternately contact the filter element, friction will occur between the vertical movement of the clamping rod and the side wall of the filter element, which may damage the filter element. To address this issue, this solution incorporates an air bladder on the clamping rod. When the air bladder is not inflated, it cannot clamp the filter element, allowing a gap to exist between the clamping rod and the filter element, thus reducing wear on the filter element during the vertical movement of the clamping rod. When the clamping rod needs to clamp the filter element and move upwards together, the connecting rod drives the clamping rod upwards. Simultaneously, the connecting rod pushes the annular plate to slide within the annular cylinder, allowing gas inside the annular cylinder to enter the air bladder through the air tube, inflating the air bladder. After the air bladder expands, it clamps the filter element, allowing the clamping rod to move the filter element upwards and remove it.

[0020] Furthermore, the lifting rod is slidably connected to the connecting rod of one of the clamping mechanisms, and the connecting rod has stops fixed on both sides of the lifting rod to limit the sliding range of the lifting rod.

[0021] Beneficial effects: When the lifting rod slides up and down within the range limited by the stop, it does not drive the connecting rod to move; instead, it only causes the hinge rod to deflect, thus achieving the alternating switching between the clamping rod and the limiting rod. When it is necessary to remove the filter element, the lifting rod moves upward to the stop above it and continues to move upward. This movement of the connecting rod, via the stop, causes the airbag to inflate, clamping the filter element and moving it upward for easy removal.

[0022] Furthermore, when the annular plate moves to the closed end of the annular cylinder, it can no longer move upward relative to the cylinder. By continuing to slide the lifting rod upward, the annular plate can push the cylinder upward, which in turn moves the support rod upward, thus opening the cover. In this design, the alternating switching of the clamping rod and the limiting rod, the inflation of the airbag to clamp the filter element, and the movement of the support rod to open the cover are all achieved simply by the lifting and sliding of the lifting rod, making the operation convenient.

[0023] Furthermore, the connecting rod is slidably connected to the annular plate radially.

[0024] Beneficial effects: By sliding the connecting rod on the annular plate, the size of the circle formed by the connecting rods of multiple clamping mechanisms can be adjusted, thus making it suitable for filter elements of different specifications and models.

[0025] Furthermore, an elastic element is fixed between the closed end of the annular cylinder and the annular plate.

[0026] Beneficial effects: With the setting of the elastic element, when the connecting rod slides upward to inflate the airbag, the elastic element contracts, and after the connection between the lifting rod and the sliding rod is released, when the support rod is rotated, the lifting rod is released. The restoring force of the elastic element pushes the annular plate to slide in the annular cylinder, extracting the gas in the airbag and releasing the clamp on the filter element, making it easy to remove the filter element.

[0027] Furthermore, a slide rail is fixed on the drive block, and a slider for sliding within the slide rail is fixed on the lifting rod; the slide rail includes an arc segment and a straight segment, the arc segment having the hinge point of the support rod as the center and the distance from the hinge point of the support rod to the slider when the elastic element is compressed to its limit as the radius.

[0028] Beneficial effects: When the lifting rod and drive block remain connected, the lifting rod moves up and down together with the drive block. When it is necessary to rotate the support rod to remove the filter element, the connection between the lifting rod and the drive block is released. As the support rod rotates from a vertical position to a horizontal or inclined position, the slider also slides within the arc section of the slide rail to the straight section. After the slider reaches the straight section, through the restoring force of the elastic element, the slider slides within the straight section, releasing the clamping force on the filter element.

[0029] Furthermore, a first magnetic block is fixed on the slider, and a second magnetic block is fixed on the drive block or slide rail for attracting the first magnetic block.

[0030] Beneficial effects: After replacing the filter element with a new one, slide the slider so that it slides from the straight section into the arc section, clamping the filter element. The slider slides in the arc section under the gravity of the clamping mechanism, causing the support rod to swing vertically. Through the mutual attraction of the first and second magnetic blocks, the slider and the drive block are connected, so that the subsequent slider can drive the lifting rod and the drive block to move synchronously. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structural state during the cleaning process in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the filter element being clamped in an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the cover being opened in an embodiment of the present invention.

[0035] Figure 5 This is a structural schematic diagram of the support rod deflection state in an embodiment of the present invention.

[0036] In the diagram: 1. Cleaning tank; 2. Filter element; 3. Cover; 4. Slide plate; 5. Support rod; 6. Annular cylinder; 7. Air pipe; 8. Spring; 9. Protrusion; 10. Connecting rod; 11. Stop block; 12. Lifting rod; 13. Slider; 14. Drive block; 15. Arc segment; 16. Straight segment; 17. Clamping rod; 18. Guide surface; 19. Hinge rod; 20. Limiting rod; 21. Hinge shaft; 22. Connecting rope; 23. Annular plate; 24. Airbag. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings, and specific embodiments are given.

[0038] Example 1

[0039] like Figure 1 , Figure 2 As shown, the aviation oil filter element cleaning feed and discharge device includes a cover 3 for closing the cleaning chamber 1, a clamping mechanism for holding the filter element 2, and a lifting mechanism for driving the clamping mechanism to move up and down inside the cleaning chamber 1. The end of the cover 3 is hinged to the upper end of the cleaning chamber 1. The cleaning chamber 1 can be opened or closed by flipping the cover 3. During the cleaning process of the filter element 2, the cover 3 remains closed. After the filter element 2 is cleaned, the cover 3 is flipped to open the cleaning chamber 1, and the filter element 2 can be taken out.

[0040] The lifting mechanism includes a sliding assembly for driving the clamping mechanism to slide vertically and a flipping assembly for pushing the cover 3 to flip. The flipping assembly includes a slide plate 4 slidably connected to the cover 3 and a support rod 5 hinged to the slide plate 4. When the cover 3 is the active moving part, during the flipping process of the cover 3, the slide plate 4 slides on the cover 3, driving the support rod 5 to move vertically. The support rod 5 deflects relative to the slide plate 4, keeping the support rod 5 in a vertical state. Correspondingly, when the support rod 5 is the active moving part, during the vertical movement of the support rod 5, it pushes the cover 3 to flip. The cover 3 has a sliding groove for the slide plate 4 to slide, which limits the sliding direction and sliding range of the slide plate 4.

[0041] The sliding assembly includes a drive block 14 vertically slidably connected within the cleaning tank 1 and a lifting rod 12 detachably connected to the drive block 14. In this embodiment, a drive component for sliding the drive block 14 is installed inside the cleaning tank 1. The drive component can be a conventional device capable of vertical reciprocating sliding, such as a cylinder. In this embodiment, the connection method between the lifting rod 12 and the drive block 14 is also a conventional detachable connection method, such as bolt connection or snap-fit ​​connection.

[0042] Multiple clamping mechanisms are provided along the circumference of the support rod 5 and are used to clamp the filter element 2 from the circumference. In this embodiment, two clamping mechanisms are used as an example, and the two clamping mechanisms are distributed on the left and right sides of the support rod 5. The clamping mechanism includes a connecting rod 10 connected to the support rod 5, a hinge rod 19 hinged to the connecting rod 10 in the middle, a clamping rod 17 hinged to one end of the hinge rod 19, and a limiting rod 20 hinged to the other end of the hinge rod 19. The two ends of the hinge rod 19 are respectively fixed with limiting blocks (not shown in the figure) for limiting the deflection angle of the clamping rod 17 and the limiting rod 20. In this embodiment, the clamping rod 17 and the limiting rod 20 are used to position the outer wall and inner wall of the filter element 2, respectively. In order to facilitate the contact and guidance between the clamping rod 17 and the limiting rod 20 and the outer wall or inner wall of the filter element 2 when they move vertically, the opposite side of the clamping rod 17 and the limiting rod 20 is provided with an inclined guide surface 18, and the free end of the guide surface 18 is inclined in a direction away from each other. A flexible layer is fixed on the clamping rod 17. In this embodiment, the flexible layer is a rubber pad that is bonded to the clamping rod 17.

[0043] The lifting rod 12 is used to drive the support rod 5 to move vertically, and the lifting rod 12 or the support rod 5 is used to drive the clamping mechanism to move vertically. Specifically, in this embodiment, the lifting rod 12 is slidably connected to the connecting rod 10 of one set of clamping mechanisms, and the connecting rod 10 has stops 11 fixed on both sides of the lifting rod 12 to limit the sliding range of the lifting rod 12. Figure 1 In the example shown, with only two symmetrically arranged clamping mechanisms, there are only two connecting rods 10. The lifting rod 12 can be slidably connected to both connecting rods 10. The connecting rod 10 is fixed to the support rod 5. When the lifting rod 12 abuts against the stop block 11 located above it, the lifting rod 12 continues to slide upward. The lifting rod 12 can then drive the connecting rod 10 to move vertically upward through the stop block 11, thereby realizing the upward movement of the clamping mechanism. Since the connecting rod 10 and the support rod 5 are fixed, they can also synchronously drive the support rod 5 to move upward.

[0044] A hinge shaft 21 is fixed in the middle of the hinge rod 19. The hinge shaft 21 is rotatably connected to the connecting rod 10, and a torsion spring is installed between the hinge shaft 21 and the connecting rod 10. A connecting rope 22 is connected between the lifting rod 12 and the hinge shaft 21. One end of the connecting rope 22 is fixed to the lifting rod 12, and the other end of the connecting rope 22 is wrapped around the hinge shaft 21 and fixed to the hinge shaft 21. During the lifting process of the lifting rod 12, the hinge shaft 21 is reciprocated by the tension of the connecting rope 22 or by the restoring force of the torsion spring, thereby realizing the reciprocating deflection of the hinge rod 19.

[0045] In this embodiment, the device has the following three states during use: cleaning state; cover 3 being opened state; and support rod 5 being deflected state, as detailed below:

[0046] During the cleaning process of filter element 2, this device is in the cleaning state, such as... Figure 1As shown, the cylinder drives the drive block 14 to slide vertically back and forth, which in turn drives the lifting rod 12 to slide vertically back and forth. The lifting rod 12 slides back and forth within the range between the two stops 11 on the connecting rod 10. When the lifting rod 12 slides upward, the connecting rope 22 pulls the hinge shaft 21 to rotate in the forward direction. The hinge rod 19 drives the limiting rod 20 to move upward, and the clamping rod 17 moves downward. The clamping rod 17 limits the outer wall of the filter element 2 to prevent the filter element 2 from moving. At this time, the inner wall of the filter element 2 can fully contact the cleaning liquid in the cleaning tank 1 for cleaning. Figure 1 As shown in the diagram. After cleaning for a period of time, the lifting rod 12 slides downward, the hinge shaft 21 rotates in the opposite direction due to the restoring force of the torsion spring, the limiting rod 20 moves downward, and the clamping rod 17 moves upward. Thus, the limiting rod 20 limits the inner wall of the filter element 2 to prevent the filter element 2 from moving. At this time, the outer wall of the filter element 2 can fully contact the cleaning liquid in the cleaning tank 1 for cleaning.

[0047] After filter element 2 is cleaned, the device will be in a state where cover 3 is opened and support rod 5 is deflected. Filter element 2 can then be removed and replaced with the one to be cleaned. Cover 3 will then be closed again, and the device will enter the cleaning state once more. Specifically, as follows... Figure 4 As shown, the specific process of the cover 3 being opened is as follows: the lifting rod 12 is driven upward by the driving block 14 until it abuts against the stop block 11 located above the lifting rod 12. The lifting rod 12 is driven upward, and the lifting rod 12 pushes the connecting rod 10 upward through the stop block 11. The connecting rod 10 drives the support rod 5 upward, and the support rod 5 pushes the cover 3 open. At this time, the filter element 2 is suspended in the cleaning box 1, and the cover 3 opens the opening of the cleaning box 1, so that the filter element 2 can be drained and dried.

[0048] Then loosen the connection between the lifting rod 12 and the drive block 14, and rotate the support rod 5 so that the support rod 5 rotates from a vertical state to a horizontal state or an inclined state, as shown. Figure 5 As shown in the embodiment, taking the state where the upper end of the cleaning tank 1 is lower on the left and higher on the right as an example, the cover 3 is also tilted. When the cover 3 is opened, the support rod 5 can be rotated to the tilted state to rotate the filter element 2 out of the opening of the cleaning tank 1. At this time, the cleaned filter element 2 can be removed, or the filter element 2 to be cleaned can be replaced. In actual design, the upper end of the cleaning tank 1 can also be set to a horizontal state.

[0049] Example 2

[0050] The difference between this embodiment and Embodiment 1 is that, as Figure 1 , Figure 2 , Figure 3As shown, the flexible layer is an airbag 24 fixed on the clamping block, that is, an airbag 24 is fixed on the clamping rod 17. In actual design, a groove can also be designed on the clamping rod 17 so that the airbag 24 is partially embedded in the groove. When the airbag 24 is deflated, it is located in the groove. When the airbag 24 is inflated, the end of the airbag 24 extends out of the groove and clamps the filter element 2. Figure 3 The state shown.

[0051] To facilitate inflation of the airbag 24, in this embodiment, the connecting rod 10 and the support rod 5 are connected as follows: an annular cylinder 6 is fixed to the outer wall of the support rod 5, the upper end of the annular cylinder 6 is closed, the lower end of the annular cylinder 6 is open, an annular plate 23 is slidably connected inside the annular cylinder 6 along its axial direction, the connecting rod 10 is connected to the annular plate 23, and an air tube 7 is connected between the closed end of the annular cylinder 6 and the airbag 24.

[0052] In practical use, this device has the following four states: cleaning state; filter element 2 clamped state; cover 3 opened state; support rod 5 deflected state, as detailed below:

[0053] The cleaning process of this device is described in Example 1. After cleaning, the device is in a state where the filter element 2 is clamped, the cover 3 is opened, and the support rod 5 is deflected, at which point the filter element 2 can be removed. Specifically, as shown... Figure 3 As shown, the specific process of the filter element 2 being clamped is as follows: the lifting rod 12 is driven by the driving block 14 to move to abut against the stop block 11 located above the lifting rod 12, and the lifting rod 12 is driven to move upward. The lifting rod 12 pushes the connecting rod 10 upward through the stop block 11, and the connecting rod 10 pushes the annular plate 23 upward. The gas in the upper part of the annular cylinder 6 enters the air bag 24 through the air pipe 7 to inflate the air bag 24. After the air bag 24 expands, it clamps the filter element 2.

[0054] When the annular plate 23 moves upward and abuts against the top of the annular cylinder 6, it can no longer move upward relative to the annular cylinder 6. Continuing to slide the lifting rod 12 upward will push the annular cylinder 6 upward via the annular plate 23, thereby causing the support rod 5 to move upward as well, opening the cover 3. Figure 4 The state shown.

[0055] Then, loosen the connection between the lifting rod 12 and the drive block 14, and rotate the support rod 5 to... Figure 5 As shown, during this process, the position of the lifting rod 12 is kept constant by manual control or by using existing equipment such as robotic arms to prevent the lifting rod 12 from driving the connecting rod 10 to move, thereby releasing the filter element 2. When the support rod 5 rotates to... Figure 5 After reaching the indicated state, slide the lifting rod 12 and connecting rod 10. The gas in the airbag 24 will return to the annular cylinder 6 through the air tube 7. Release the filter element 2 and you can remove the filter element 2.

[0056] After replacing the filter element 2 to be cleaned, first slide the lifting rod 12, causing it to drive the connecting rod 10 towards the closed end of the annular cylinder 6, inflating the airbag 24 and clamping the filter element 2. Then, control the position of the lifting rod 12 and rotate the support rod 5. After the support rod 5 rotates to a vertical position, connect the lifting rod 12 and the drive block 14. In actual operation, to facilitate the rotation of the lifting rod 12 to the drive block 14, the drive block 14 can slide down first and then up to avoid the rotation of the lifting rod 12. Then the drive block 14 slides down while the cover 3 is closed from the outside. During the closing of the cover 3, the support rod 5 drives the annular cylinder 6 to move downward, synchronously controlling the drive block 14 to slide down, so that the lifting rod 12 is always in contact with the stop block 11 above it. Then the clamping mechanism can clamp the filter element 2 and enter the cleaning tank 1. After the cover 3 is closed, the drive block 14 continues to slide down, the lifting rod 12 slides down accordingly, and the connecting rod 10 slides down under its own gravity. The gas in the airbag 24 is drawn back into the annular cylinder 6, the filter element 2 is released, and then the device enters the cleaning state. In the actual design process, in order to prevent the annular plate 23 from sliding out of the annular cylinder 6, a protrusion 9 is fixed to the lower end of the inner wall of the annular cylinder 6.

[0057] Based on Embodiment 2, preferably, an elastic element is fixed between the closed end of the annular cylinder 6 and the annular plate 23; specifically, the elastic element is selected as a spring 8. Figure 3 As shown, when the connecting rod 10 slides upward to inflate the airbag 24, the spring 8 contracts. When the connection between the lifting rod 12 and the drive block 14 is released, the support rod 5 rotates to... Figure 5 Once the indicated state is reached, release the lifting rod 12. The restoring force of the spring 8 will push the annular plate 23 to slide inside the annular cylinder 6, drawing out the gas from the airbag 24. Release the clamp on the filter element 2, and the filter element 2 can be removed without manually sliding the lifting rod 12 and connecting rod 10.

[0058] Based on Embodiment 2, preferably, the connecting rod 10 is radially slidably connected to the annular plate 23. Specifically, to facilitate the fixing of the connecting rod 10 after it slides on the annular plate 23, a miniature cylinder for driving the sliding of the connecting rod 10 can be designed on the annular plate 23. Alternatively, the connecting rod 10 can be directly bolted to the annular plate 23 after it slides. By sliding the connecting rod 10 on the annular plate 23, the size of the circle formed by the connecting rods 10 of the multiple clamping mechanisms can be adjusted, thus adapting to filter elements 2 of different specifications and models. When cleaning filter elements 2 of the same batch and model, after adjusting the position of the connecting rod 10 on the annular plate 23, the connecting rod 10 is fixed to prevent it from sliding on its own. The position of the connecting rod 10 only needs to be adjusted according to requirements when cleaning filter elements 2 of different models.

[0059] Example 3

[0060] This embodiment, based on Embodiment 1 or Embodiment 2, has a slide rail fixed to the drive block 14 and a slider 13 fixed to the lifting rod 12 for sliding within the slide rail. The slide rail includes an arc segment 15 and a straight segment 16. The arc segment 15 has its center at the hinge point of the support rod 5 and its radius is the distance from the hinge point of the support rod 5 to the slider 13 when the elastic element is compressed to its limit. Figure 3 In the indicated state, spring 8 is compressed to its limit, and airbag 24 inflates to clamp filter element 2. At this time, the distance from the hinge point of support rod 5 to the center of slider 13 is... Figure 5 During the deflection of the middle support rod 5, the sliding radius of the slider 13 is limited by the arc segment 15.

[0061] In this embodiment, the lifting rod 12 and the driving block 14 are connected as follows: a first magnetic block is fixed on the slider 13, and a second magnetic block for attracting the first magnetic block is fixed on the driving block 14 or the slide rail, that is, the lifting rod 12 and the driving block 14 are fixed by magnetic attraction.

[0062] In practical use, the processes of the device being in the cleaning state, the filter element 2 being clamped, and the cover 3 being opened are all as described in Embodiment 1 or Embodiment 2. In this embodiment, after the cover 3 is opened, the operator can directly rotate the support rod 5. During the rotation, the slider 13 slides along the arc segment 15. The position of the lifting rod 12 is controlled by the restriction of the slider 13 by the arc segment 15, preventing the connecting rod 10 from sliding and thus releasing the filter element 2. When the slider 13 slides to the intersection of the straight segment 16 and the arc segment 15, the slider 13 is no longer restricted, and the annular plate 23 slides in the annular cylinder 6 under the elastic restoring force of the spring 8, drawing gas from the airbag 24 and releasing the filter element 2.

[0063] After replacing the filter element 2 to be cleaned, the operator slides the lifting rod 12, causing the slider 13 to move from the straight section 16 into the arc section 15. Then, the support rod 5, under the influence of gravity, deflects directly to a vertical position, and the slider 13 slides within the arc section 15. After the first and second magnetic blocks come into contact, the magnetic attraction restricts the slider 13 from continuing to slide, allowing the cover 3 to be closed and the drive block 14 to slide down. In this design, the sliding rail eliminates the need for manual or other equipment control of the lifting rod 12 during the opening and closing of the cover 3 and the rotation of the support rod 5.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An aviation oil filter element cleaning inlet and outlet device, comprising a cover for sealing the cleaning chamber, the end of the cover being hinged to the cleaning chamber, characterized in that: It also includes a clamping mechanism for holding the filter element and a lifting mechanism for driving the clamping mechanism to move up and down within the cleaning tank. The lifting mechanism includes a sliding component for driving the clamping mechanism to slide vertically and a flipping component for pushing the cover to flip. The flipping component includes a slide plate slidably connected to the cover and a support rod hinged to the slide plate. The sliding component includes a drive block slidably connected vertically within the cleaning tank and a lifting rod detachably connected to the drive block. The support rod and the lifting rod are connected, and the lifting rod is used to drive the support rod to move vertically. The clamping mechanism has multiple sets of clamping mechanisms along the circumference of the support rod for clamping the filter element from the circumference of the filter element. The lifting rod or the support rod is used to drive the clamping mechanism to move vertically. The clamping mechanism includes a connecting rod connected to a support rod, a hinge rod hinged to the connecting rod in the middle, and limiting rods and clamping rods respectively hinged to both ends of the hinge rod. Limiting blocks for limiting the deflection angle of the clamping rod and the limiting rod are fixed at both ends of the hinge rod. A hinge shaft is fixed in the middle of the hinge rod, and the hinge shaft is rotatably connected to the connecting rod. A torsion spring is installed between the hinge shaft and the connecting rod. A connecting rope is connected between the lifting rod and the hinge shaft. One end of the connecting rope is fixed to the lifting rod, and the other end of the connecting rope is wound around the hinge shaft and then fixed to the hinge shaft. An airbag is fixed to the clamping rod; an annular cylinder is fixed to the support rod, with one end closed and the other end open. An annular plate is slidably connected inside the annular cylinder along its axial direction. A connecting rod is connected to the annular plate, and an air tube connects the closed end of the annular cylinder to the airbag. An elastic element is fixed between the closed end of the annular cylinder and the annular plate. A slide rail is fixed to the drive block, and a slider for sliding within the slide rail is fixed to the lifting rod. The slide rail includes an arc segment and a straight segment. The arc segment has the hinge point of the support rod as its center and the distance from the hinge point of the support rod to the slider when the elastic element is compressed to its limit as its radius.

2. The aviation oil filter element cleaning inlet and outlet device according to claim 1, characterized in that: The clamping rod and the limiting rod are used to position the outer wall and inner wall of the filter element, respectively. The opposite sides of the clamping rod and the limiting rod are provided with inclined guide surfaces, and the free ends of the guide surfaces on the clamping rod and the limiting rod are inclined in a direction away from each other.

3. The aviation oil filter element cleaning inlet and outlet device according to claim 1, characterized in that: The lifting rod is slidably connected to the connecting rod of one of the clamping mechanisms, and the connecting rod has stops fixed on both sides of the lifting rod to limit the sliding range of the lifting rod.

4. The aviation oil filter element cleaning inlet and outlet device according to claim 1, characterized in that: The connecting rod is slidably connected to the annular plate along the radial direction of the annular plate.

5. The aviation oil filter element cleaning inlet and outlet device according to claim 1, characterized in that: A first magnetic block is fixed on the slider, and a second magnetic block is fixed on the drive block or slide rail for attracting the first magnetic block.

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