Integral high seal hydraulic filter

Abstract

The utility model relates to a high sealing integrated hydraulic filter, including end cover, shell, fastening mechanism and positioning mechanism, its top has the clamping slot, the end cover places in the clamping slot inside, the fastening mechanism includes a plurality of L type fastening block, adjusting ring and stretch spring, the adjusting ring is used for driving a plurality of L type fastening block displacement and end cover contact through stretch spring, the positioning mechanism includes protection assembly and positioning assembly, the positioning mechanism sets up in the shell outer wall, is used for fastening mechanism protection, the positioning assembly is used for a plurality of L type fastening block displacement and end cover, to adjusting ring carries out the limit when. The high sealing integrated hydraulic filter, through the setting of positioning mechanism and fastening mechanism, a plurality of L type fastening block displacement and end cover or contact end cover, make a plurality of L type fastening block to end cover fastening, realize end cover and shell direct locking, constitute integrated mounting structure, simple operation, do not need the tool dismounting, improve hydraulic filter maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic filter technology, specifically an integrated high-sealing hydraulic filter. Background Technology

[0002] Hydraulic filters are key components in hydraulic systems used to filter media. Their core function is to remove impurities, prevent contamination, ensure normal system operation, and extend equipment life. They are used to filter mechanical impurities, oil oxidation products, and external contaminants from hydraulic oil, protecting hydraulic components from wear. They are commonly made of multi-layer metal mesh, glass fiber, or sintered materials, are resistant to high pressure and corrosion, and usually do not have bypass valves. Absolute filtration is required under high pressure to prevent unfiltered oil from entering the system.

[0003] Hydraulic filter elements or covers are designed with standard threaded interfaces, which are directly screwed into the corresponding threaded holes in the housing and fixed through thread engagement. Since hydraulic filters have more precise protective components than oil filters and do not have bypass valves, they require more frequent disassembly and cleaning of the filter element. However, the threaded interface requires the use of a filter wrench for disassembly and cleaning, and the filter needs to be effectively fixed, making filter element cleaning inconvenient. Therefore, an integrated high-sealing hydraulic filter is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated high-sealing hydraulic filter, which solves the problem of poor ease of cleaning of hydraulic filter elements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated high-sealing hydraulic filter, comprising: End cap; The housing has a slot at its top, and the end cap is placed inside the slot; The fastening mechanism includes multiple L-shaped fastening blocks, an adjusting ring, and multiple tension springs. The adjusting ring is used to drive the multiple L-shaped fastening blocks to move and contact the end cap via the tension springs. The positioning mechanism includes a protective component and a positioning component. The positioning mechanism is disposed on the outer peripheral wall of the housing and is used for fastening the mechanism for protection. The positioning component is used to limit the adjustment ring when multiple L-shaped fastening blocks are displaced away from the end cover.

[0006] In one embodiment, the end cap is provided with a plurality of isolation frames and an oil drain pipe. The plurality of isolation frames are evenly arranged in the end cap and together with the oil drain pipe form a plurality of oil inlet holes.

[0007] In one embodiment, the outer peripheral wall and top of the end cap are provided with sealing grooves, and the top sealing groove is located outside the oil inlet hole.

[0008] In one embodiment, the fastening mechanism further includes a drive shaft fixed to the bottom of the L-shaped fastening block. The top of the adjusting ring has an arc-shaped elongated hole adapted to the drive shaft. The outer peripheral wall of the drive shaft has a protrusion. The outer peripheral wall of the adjusting ring is fixed with a lever. The inner peripheral wall of the adjusting ring is fixed with an annular slide rail connected to the housing. A limit piece is fixed on one side of the lever. The tension spring has positioning pins engaged at both ends, and one end of the positioning pin is connected to the adjusting ring.

[0009] In one embodiment, the protective assembly includes an annular protective chamber fixed to the outer peripheral wall of the housing. The top of the annular protective chamber has a limiting elongated hole adapted to the drive shaft, and the outer peripheral wall of the annular protective chamber has a movable hole adapted to the actuating piece. Another positioning post is connected to the annular protective chamber.

[0010] In one embodiment, the positioning component includes a limiting seat fixed to the outer peripheral wall of the annular protective chamber. The limiting seat is provided with a return spring and a limiting pin. The top of the limiting pin is inclined and has a limiting ring piece close to the inclined surface. The return spring is sleeved on the limiting pin and its two ends are in contact with the limiting ring piece and the limiting seat, respectively. A pull ring is fixed to the bottom of the limiting pin.

[0011] In one embodiment, the L-shaped fastening block has an extension block on the side away from the end cap, and the extension block is connected to the drive shaft.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects: This integrated high-sealing hydraulic filter, through the setting of positioning and fastening mechanisms, allows multiple L-shaped fastening blocks to move away from or contact the end cover, thereby fastening the end cover to the housing and directly locking it into an integrated installation structure. It is simple to operate, requires no tools for disassembly and assembly, and improves the maintenance efficiency of the hydraulic filter. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the fastening mechanism of this utility model; Figure 3 This is a schematic diagram of the positioning mechanism of this utility model; Figure 4 This is a schematic diagram of the end cap structure of this utility model.

[0014] In the diagram: 1. Housing; 2. End cap; 3. Sealing groove; 4. Oil drain pipe; 5. Isolation frame; 6. Oil inlet; 7. Annular protective chamber; 8. Annular slide rail; 9. Adjusting ring; 10. Positioning pin; 11. Tension spring; 12. Arc-shaped elongated hole; 13. Drive shaft; 14. L-shaped fastening block; 15. Actuating piece; 16. Limiting piece; 17. Limiting elongated hole; 18. Movable hole; 19. Limiting seat; 20. Limiting locking pin; 21. Return spring; 22. Pull ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0017] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0018] Hydraulic filter elements or covers are designed with standard threaded interfaces, which are directly screwed into the corresponding threaded holes in the housing and fixed through thread engagement. Since hydraulic filters have more precise protective components than oil filters and do not have bypass valves, they require more frequent disassembly and cleaning of the filter element. However, the threaded interface requires the use of a filter wrench for disassembly and cleaning, and the filter needs to be effectively fixed, making filter element cleaning inconvenient.

[0019] Therefore, an integrated high-sealing hydraulic filter is proposed to solve the above problems.

[0020] Please see Figure 1-4The integrated high-sealing hydraulic filter in this embodiment includes an end cap 2, a housing 1, a fastening mechanism, and a positioning mechanism. The top of the filter has a slot, and the end cap 2 is placed inside the slot. The fastening mechanism includes multiple L-shaped fastening blocks 14, an adjusting ring 9, and multiple tension springs 11. The adjusting ring 9 is used to drive the multiple L-shaped fastening blocks 14 to move and contact the end cap 2 via the tension springs 11. The positioning mechanism includes a protective component and a positioning component. The positioning mechanism is set on the outer peripheral wall of the housing 1 for protection of the fastening mechanism. The positioning component is used to limit the adjustment ring 9 when the multiple L-shaped fastening blocks 14 move away from the end cap 2.

[0021] Specifically, a slight rotation of the adjusting ring 9 can stretch the tension spring 11, thereby moving multiple L-shaped fastening blocks 14 away from the end cover 2, enabling quick assembly and disassembly of the end cover 2 and the housing 1. The operation is simple and requires no tools.

[0022] The L-shaped fastening block 14 and the tension spring 11 can be set according to the actual use and are evenly distributed on the adjusting ring 9 to achieve the dispersed fixation of the end cover 2, so as to make the fixing and sealing effect better.

[0023] In this embodiment, the end cap 2 is provided with multiple isolation frames 5 and oil drain pipes 4. The multiple isolation frames 5 are evenly arranged inside the end cap 2 and together with the oil drain pipes 4, they form multiple oil inlet holes 6.

[0024] It should be noted that the multiple isolation frames 5 physically separate the oil inlet 6 into multiple independent flow channels, preventing the oil from concentrating and impacting local areas of the filter element, which could lead to excessive local pressure or premature damage to the filter material. This guides the oil to be evenly distributed, allowing large particles of impurities to be initially dispersed before entering the filter element, thus reducing the risk of filter element clogging.

[0025] In addition, the isolation frame 5 can enhance the structural strength of the end cap 2 and reduce the impact of hydraulic system vibration on the filter's sealing performance.

[0026] In this embodiment, sealing grooves 3 are provided on both the outer peripheral wall and the top of the end cap 2, with the top sealing groove 3 located outside the oil inlet hole 6.

[0027] It should be noted that the sealing groove 3 is used so that a sealing ring can be snapped into it, so that the oil inlet hole 6 of the end cover 2 is sealed around, and the end cover 2 is placed into the slot of the housing 1, so that it can be effectively sealed with the housing 1.

[0028] In this embodiment, the fastening mechanism also includes a drive shaft 13 fixed to the bottom of the L-shaped fastening block 14. The top of the adjusting ring 9 is provided with an arc-shaped elongated hole 12 that is adapted to the drive shaft 13. The outer peripheral wall of the drive shaft 13 has a protrusion. The outer peripheral wall of the adjusting ring 9 is fixed with a lever 15. The inner peripheral wall of the adjusting ring 9 is fixed with an annular slide rail 8 connected to the housing 1. A limit piece 16 is fixed on one side of the lever 15. The tension spring 11 is engaged with positioning pins 10 at both ends. One end of the positioning pin 10 is connected to the adjusting ring 9.

[0029] Specifically, by moving the lever 15 to the right, the adjusting ring 9 rotates slightly to the right via the annular slide rail 8, thereby causing the shaft 13 to move within the arc-shaped elongated hole 12 and contact the inner wall of the arc-shaped elongated hole 12 on the side away from the driving shaft 13. This causes the driving shaft 13 to move under the restriction of the protective component, thereby causing the L-shaped fastening block 14 to disengage from the top edge of the end cover 2, achieving rapid separation of the end cover 2 from the housing 1. When the lever 15 loses pressure, the tension spring 11 elastically resets itself, causing the adjusting ring 9 to move in the opposite direction according to the above steps, achieving contact between the L-shaped fastening block 14 and the end cover 2. No tools are required, improving the maintenance effect of the hydraulic filter.

[0030] In addition, the protrusions allow the drive shaft 13 to be effectively confined inside the protective assembly, thereby enabling the drive shaft 13 to operate stably and improving the stability of the L-shaped fastening block 14 in fixing the end cap 2.

[0031] One end of the inner peripheral wall of the arc-shaped elongated hole 12 is close to the inner peripheral wall of the adjusting ring 9, and the other end is close to the outer peripheral wall of the adjusting ring 9, thereby realizing the displacement of the shaft 13.

[0032] In this embodiment, the protective component includes an annular protective chamber 7 fixed to the outer peripheral wall of the housing 1. The top of the annular protective chamber 7 is provided with a limiting elongated hole 17 adapted to the drive shaft 13. The outer peripheral wall of the annular protective chamber 7 is provided with an movable hole 18 adapted to the prying piece 15. Another positioning post 10 is connected to the annular protective chamber 7.

[0033] Among them, the elongated hole 17 is a straight hole, which can limit the movement of the shaft 13, thereby realizing the contact or separation of the L-shaped fastening block 14 with the end cover 2. The movable hole 18 limits the displacement of the lever 15, limiting the rotation distance of the adjusting ring 9 driven by the lever 15, thereby making the L-shaped fastening block 14 more stable as the adjusting ring 9 moves via the drive shaft 13.

[0034] In this embodiment, the positioning component includes a limiting seat 19 fixed to the outer peripheral wall of the annular protective chamber 7. The limiting seat 19 is provided with a reset spring 21 and a limiting pin 20. The top of the limiting pin 20 is inclined and has a limiting ring piece close to the inclined surface. The reset spring 21 is sleeved on the outside of the limiting pin 20 and its two ends are in contact with the limiting ring piece and the limiting seat 19, respectively. A pull ring 22 is fixed at the bottom of the limiting pin 20.

[0035] Specifically, when the actuating piece 15 moves the limiting piece 16 into the limiting seat 19, it contacts the top inclined surface of the limiting pin 20 and applies pressure to this inclined surface, causing the upper limiting ring of the limiting pin 20 to be compressed and descend, which in turn compresses the return spring 21. The limiting piece 16 has a hole that matches the limiting pin 20, so that the limiting pin 20 is locked in place and the actuating piece 15 is fixed, thus facilitating the installation of the end cover 2 and the hydraulic filter element into or out of the housing 1.

[0036] In addition, grooves are provided on both the lever 15 and the limit seat 19, so that they fit the fingers better when operated manually.

[0037] Once the end cap 2 and the housing 1 are installed, the pull ring 22 can be pulled down to disengage the limiting pin 20 from the limiting piece 16. Under the reset action of the tension spring 11, the adjusting ring 9 can drive the prying piece 15 to reset, thus achieving an integral fastening of the end cap 2 and the housing 1.

[0038] In this embodiment, the L-shaped fastening block 14 has an extension block on the side away from the end cap 2, and the extension block is connected to the drive shaft 13.

[0039] It should be understood that the extension block is designed to shield the limiting elongated hole 17, minimizing the impact of the external environment on the interior of the annular protective chamber 7.

[0040] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An integrated high-sealing hydraulic filter, characterized in that, include: End cap (2); The housing (1) has a slot at its top, and the end cap (2) is placed inside the slot; The fastening mechanism includes multiple L-shaped fastening blocks (14), an adjusting ring (9), and multiple tension springs (11). The adjusting ring (9) is used to drive the multiple L-shaped fastening blocks (14) to move and contact the end cap (2) via the tension springs (11). The positioning mechanism includes a protective component and a positioning component. The positioning mechanism is set on the outer peripheral wall of the housing (1) for fastening mechanism protection. The positioning component is used to limit the adjustment ring (9) when multiple L-shaped fastening blocks (14) are displaced away from the end cover (2).

2. The integrated high-sealing hydraulic filter according to claim 1, characterized in that, The end cap (2) is provided with multiple isolation frames (5) and oil drain pipe (4). The multiple isolation frames (5) are evenly arranged inside the end cap (2) and together with the oil drain pipe (4) form multiple oil inlet holes (6).

3. The integrated high-sealing hydraulic filter according to claim 2, characterized in that, The end cap (2) has a sealing groove (3) on its outer peripheral wall and top, and the sealing groove (3) on the top is located outside the oil inlet (6).

4. The integrated high-sealing hydraulic filter according to claim 1, characterized in that, The fastening mechanism also includes a drive shaft (13) fixed at the bottom of the L-shaped fastening block (14). The top of the adjusting ring (9) is provided with an arc-shaped long hole (12) adapted to the drive shaft (13). The outer peripheral wall of the drive shaft (13) has a protrusion. The outer peripheral wall of the adjusting ring (9) is fixed with a lever (15). The inner peripheral wall of the adjusting ring (9) is fixed with an annular slide rail (8) connected to the housing (1). A limit piece (16) is fixed on one side of the lever (15). The tension spring (11) is clamped with positioning pins (10) at both ends. One end of the positioning pin (10) is connected to the adjusting ring (9).

5. The integrated high-sealing hydraulic filter according to claim 4, characterized in that, The protective assembly includes an annular protective chamber (7) fixed to the outer peripheral wall of the housing (1). The top of the annular protective chamber (7) is provided with a limiting elongated hole (17) adapted to the drive shaft (13). The outer peripheral wall of the annular protective chamber (7) is provided with an movable hole (18) adapted to the prying piece (15). Another positioning post (10) is connected to the annular protective chamber (7).

6. The integrated high-sealing hydraulic filter according to claim 5, characterized in that, The positioning component includes a limiting seat (19) fixed to the outer peripheral wall of the annular protective chamber (7). The limiting seat (19) is provided with a reset spring (21) and a limiting pin (20). The top of the limiting pin (20) is inclined and has a limiting ring piece close to the inclined surface. The reset spring (21) is sleeved on the limiting pin (20) and its two ends are in contact with the limiting ring piece and the limiting seat (19) respectively. A pull ring (22) is fixed at the bottom of the limiting pin (20).

7. The integrated high-sealing hydraulic filter according to claim 4, characterized in that, The L-shaped fastening block (14) has an extension block on the side away from the end cap (2), and the extension block is connected to the drive shaft (13).

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