Hydraulic filter shell assembly

Abstract

The utility model relates to the technical field of hydraulic filters, in particular to a hydraulic filter shell assembly which comprises a shell body, an end cover is installed at the top end of the shell body through a fixing structure, a rotating ring is connected to the shell body in a rotating mode, a plurality of pressing blocks are fixedly connected to the rotating ring, and the pressing blocks are fixedly connected to the shell body. A plurality of protruding blocks are fixedly connected to the end cover, the pressing blocks abut against the protruding blocks, the two sides of each protruding block are of an inclined face structure, a limiting structure is installed on the rotating ring, a fixing sleeve is fixedly connected to the rotating ring, a limiting rod is slidably connected into the fixing sleeve, and a limiting hole is formed in the shell body. The end part of the limiting rod is clamped with the limiting hole; the rotating ring drives the pressing block to abut against the protruding block on the end cover, the end cover can be rapidly fixed, the two sides of the protruding block are each of an inclined face structure, the contact area of the pressing block and the protruding block can be gradually increased when the pressing block rotates towards the middle of the protruding block, and therefore connection between the end cover and the shell body is tighter.

Description

Technical Field

[0001] This utility model relates to a housing assembly, specifically a hydraulic filter housing assembly, and belongs to the field of hydraulic filter technology. Background Technology

[0002] The RFA type direct return oil filter is a commonly used filtration device, mainly used for return oil filtration in hydraulic systems. It features a compact structure and convenient installation, effectively filtering out impurities and particles in the return oil, protecting system components, preventing impurities from entering and causing wear, blockage, and other problems, and ensuring the stable and reliable operation of the hydraulic system. The filter media can generally be selected with different precision specifications according to specific needs, and it is equipped with bypass valves and other components, which can play a certain protective role in the event of filter element blockage, ensuring normal oil circuit operation.

[0003] However, the end caps of traditional RFA-type direct return oil filters are usually threaded to the housing. During installation, the end caps need to be accurately aligned with the threads on the housing and screwed in, which is quite laborious. If the force is uneven, the threads may be mis-threaded, affecting the sealing and firmness of the connection. When disassembling, after a long period of use, oil stains, impurities, or slight rust may accumulate on the threads, making it difficult to screw in, or even damaging the threads. This makes subsequent maintenance and filter replacement inconvenient, increasing the time cost and difficulty of maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic filter housing assembly to solve the above problems. By using a rotating ring to drive the pressure block to abut against the protrusion on the end cover, the end cover can be quickly fixed. The protrusion has a sloping structure on both sides. As the pressure block rotates towards the center of the protrusion, the contact area between the pressure block and the protrusion gradually increases, thereby making the connection between the end cover and the housing body tighter.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a hydraulic filter housing assembly includes a housing body, an end cap mounted on the top of the housing body via a fixing structure, the fixing structure including a rotating ring, the rotating ring being rotatably connected to the housing body, a plurality of pressure blocks being fixedly connected to the rotating ring, a plurality of protrusions being fixedly connected to the end cap, the pressure blocks abutting against the protrusions, the two sides of the protrusions having an inclined structure, a limiting structure being installed on the rotating ring, the limiting structure including a fixing sleeve, the fixing sleeve being fixedly connected to the rotating ring, a limiting rod being slidably connected inside the fixing sleeve, a limiting hole being formed on the housing body, and the end of the limiting rod engaging with the limiting hole.

[0006] Preferably, the pressing block has an "L" shaped structure, and the plurality of pressing blocks are arranged in a circular array about the middle of the rotating ring.

[0007] Preferably, a rubber ring is installed at the bottom of the end cap, and the rubber ring abuts against the main body of the housing.

[0008] Preferably, an anti-detachment ring is fixedly connected to the limiting rod, and a spring is fixedly connected between the anti-detachment ring and the fixing sleeve.

[0009] Preferably, a first flange is fixedly connected to the oil inlet of the housing body, and a second flange is bolted to the first flange, which is fixedly connected to the oil inlet pipe.

[0010] Preferably, a positioning block is fixedly connected to the second flange, and a positioning groove is provided on the first flange, wherein the positioning block engages with the positioning groove.

[0011] Preferably, the positioning block has a "T" shaped structure, and the positioning groove has a "T" shaped structure.

[0012] Preferably, a rubber gasket is installed on the second flange, and the rubber gasket abuts against the first flange.

[0013] The beneficial effects of this utility model are as follows: an end cap is installed on the top of the main body of the housing through a fixed structure; a rotating ring is rotatably connected to the main body of the housing; multiple pressure blocks are fixedly connected to the rotating ring; multiple protrusions are fixedly connected to the end cap; the pressure blocks abut against the protrusions; the two sides of the protrusions are inclined; a limiting structure is installed on the rotating ring; a fixing sleeve is fixedly connected to the rotating ring; a limiting rod is slidably connected inside the fixing sleeve; a limiting hole is opened on the main body of the housing; the end of the limiting rod engages with the limiting hole; by the rotating ring driving the pressure blocks to abut against the protrusions on the end cap, the end cap can be quickly fixed; and the two sides of the protrusions are inclined, as the pressure blocks rotate towards the center of the protrusions, the contact area between the pressure blocks and the protrusions gradually increases, thereby making the connection between the end cap and the main body of the housing tighter; when the pressure blocks abut against the protrusions, the limiting rod engages with the limiting hole, limiting the rotating ring and preventing the rotating ring from driving the pressure blocks to rotate, thereby increasing the stability of the contact between the pressure blocks and the protrusions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0016] Figure 3 This is a schematic diagram of the connection structure between the end cap and the protrusion of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the end cap and the main body of the housing of this utility model;

[0018] Figure 5 for Figure 4 The diagram shown is an enlarged view of the structure of section B.

[0019] Figure 6 This is a schematic diagram of the connection structure between the fixing ring and the main body of the housing of this utility model;

[0020] Figure 7 for Figure 6 The diagram shows an enlarged view of section C.

[0021] In the diagram: 1. Main body of the housing; 2. Fixing structure; 201. Rotary ring; 202. Pressure block; 203. Protrusion; 204. Rubber ring; 3. End cap; 4. Limiting structure; 401. Fixing sleeve; 402. Limiting rod; 403. Limiting hole; 404. Anti-detachment ring; 405. Spring; 5. First flange; 6. Second flange; 7. Oil inlet pipe; 8. Positioning block; 9. Positioning groove; 10. Rubber pad. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this utility model. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Please see Figures 1-7As shown, a hydraulic filter housing assembly includes a housing body 1. An end cap 3 is mounted on the top of the housing body 1 via a fixing structure 2. The fixing structure 2 includes a rotating ring 201, which is rotatably connected to the housing body 1. Multiple pressure blocks 202 are fixedly connected to the rotating ring 201. Multiple protrusions 203 are fixedly connected to the end cap 3. The pressure blocks 202 abut against the protrusions 203. The two sides of the protrusions 203 are inclined. A limiting structure 4 is installed on the rotating ring 201. The limiting structure 4 includes a fixing sleeve 401, which is fixedly connected to the rotating ring 201. A limiting rod 402 is slidably connected inside the fixing sleeve 401. A limiting hole 403 is opened on the housing body 1. The end of the limiting rod 402 engages with the limiting hole 403. The pressure blocks 202 are L-shaped, and the multiple pressure blocks 202 are arranged in a circumferential array about the middle of the rotating ring 201.

[0025] As a technical optimization of this utility model, a rubber ring 204 is installed at the bottom of the end cap 3, and the rubber ring 204 abuts against the housing body 1. Since the rubber ring 204 is installed on the end cap 3, when the fixing structure 2 drives the end cap 3 to close with the housing body 1, the rubber ring 204 abuts against the edge of the housing body 1 downwards, thereby improving the sealing between the end cap 3 and the housing body 1 through the rubber ring 204.

[0026] As a technical optimization of this utility model, an anti-detachment ring 404 is fixedly connected to the limiting rod 402, and a spring 405 is fixedly connected between the anti-detachment ring 404 and the fixing sleeve 401. During the rotation of the rotating ring 201, the outer wall of the housing body 1 slides away from the housing body 1 by contacting the limiting rod 402. The limiting rod 402 drives the anti-detachment ring 404 to slide. The anti-detachment ring 404 slides while driving the spring 405 to contract. When the rotating ring 201 rotates to the point where the limiting rod 402 is aligned with the limiting hole 403 on the housing body 1, the spring 405 resets and drives the limiting rod 402 to engage with the limiting hole 403, thereby limiting the rotating ring 201 and further fixing the end cover 3, making the installation of the end cover 3 more stable and secure.

[0027] As a technical optimization of this utility model, the oil inlet of the housing body 1 is fixedly connected to a first flange 5, and a second flange 6 is installed on the first flange 5 by bolts. The second flange 6 is fixedly connected to the oil inlet pipe 7, and a positioning block 8 is fixedly connected to the second flange 6. A positioning groove 9 is provided on the first flange 5, and the positioning block 8 engages with the positioning groove 9. The positioning block 8 and the positioning groove 9 are both "T" shaped. When installing the oil inlet pipe 7, the positioning block 8 on the second flange 6 is engaged with the positioning groove 9 on the first flange 5 to quickly achieve the initial positioning of the second flange 6 and the oil inlet pipe 7, so that the mounting holes of the second flange 6 are aligned with the mounting holes of the first flange 5, which facilitates the installation of the second flange 6 with bolts. Furthermore, since the positioning block 8 is "T" shaped, it can prevent the positioning block 8 from causing the second flange 6 to slip off from the side of the first flange 5, thereby increasing the stability of the positioning block 8 and making the installation of the second flange 6 more convenient.

[0028] As a technical optimization of this utility model, a rubber gasket 10 is installed on the second flange 6, and the rubber gasket 10 abuts against the first flange 5; the setting of the rubber gasket 10 increases the sealing between the first flange 5 and the second flange 6, and prevents leakage at the connection between the oil inlet pipe 7 and the housing body 1.

[0029] In use, the end cap 3 is first fitted onto the main body 1 of the housing. Then, the fixing sleeve 401 is held, and the rotating ring 201 is driven to rotate by the fixing sleeve 401. The rotating ring 201 drives the pressure block 202 to rotate, thereby causing the pressure block 202 to contact the protrusion 203, thus quickly fixing the end cap 3. Since the two sides of the protrusion 203 are inclined, as the pressure block 202 rotates towards the center of the protrusion 203, the contact area between the pressure block 202 and the protrusion 203 gradually increases, making the contact between the pressure block 202 and the protrusion 203 more effective. The connection between the end cap 3 and the housing body 1 is tightened, making the connection more secure. During the rotation of the rotating ring 201, the outer wall of the housing body 1 slides away from the limiting rod 402, causing the limiting rod 402 to slide. Simultaneously, the sliding of the anti-detachment ring 404 drives the spring 405 to contract. When the rotating ring 201 rotates to the point where the limiting rod 402 aligns with the limiting hole 403 on the housing body 1, the spring 405 resets and drives the limiting rod 402 to engage with the limiting hole 403, thus achieving the limitation of the rotating ring 201. The positioning of the end cap 3 is further secured, making its installation more stable and secure. Because the end cap 3 is equipped with a rubber ring 204, when the fixing structure 2 drives the end cap 3 to close with the housing body 1, the rubber ring 204 presses downwards against the edge of the housing body 1, thereby improving the sealing between the end cap 3 and the housing body 1. When installing the oil inlet pipe 7, the positioning block 8 on the second flange 6 engages with the positioning groove 9 on the first flange 5, quickly achieving initial positioning of the second flange 6 and the oil inlet pipe 7. This aligns the mounting holes of the second flange 6 with those of the first flange 5, facilitating bolt installation of the second flange 6. Furthermore, the "T"-shaped structure of the positioning block 8 prevents the second flange 6 from slipping from the side of the first flange 5, increasing the stability of the positioning block 8 and making the installation of the second flange 6 more convenient. The rubber gasket 10 increases the sealing between the first flange 5 and the second flange 6, preventing leakage at the connection between the oil inlet pipe 7 and the housing body 1.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A hydraulic filter housing assembly, comprising a housing body (1), characterized in that: An end cap (3) is installed on the top of the housing body (1) via a fixing structure (2). The fixing structure (2) includes a rotating ring (201). The rotating ring (201) is rotatably connected to the housing body (1). Multiple pressure blocks (202) are fixedly connected to the rotating ring (201). Multiple protrusions (203) are fixedly connected to the end cap (3). The pressure blocks (202) abut against the protrusions (203). The two sides of the protrusions (203) are inclined. A limiting structure (4) is installed on the rotating ring (201). The limiting structure (4) includes a fixing sleeve (401). The fixing sleeve (401) is fixedly connected to the rotating ring (201). A limiting rod (402) is slidably connected inside the fixing sleeve (401). A limiting hole (403) is opened on the housing body (1). The end of the limiting rod (402) engages with the limiting hole (403).

2. A hydraulic filter housing assembly according to claim 1, characterized in that: The pressing block (202) has an "L" shaped structure, and the multiple pressing blocks (202) are arranged in a circular array about the middle of the rotating ring (201).

3. A hydraulic filter housing assembly according to claim 1, characterized in that: A rubber ring (204) is installed at the bottom of the end cap (3), and the rubber ring (204) abuts against the housing body (1).

4. A hydraulic filter housing assembly according to claim 1, characterized in that: An anti-detachment ring (404) is fixedly connected to the limiting rod (402), and a spring (405) is fixedly connected between the anti-detachment ring (404) and the fixing sleeve (401).

5. A hydraulic filter housing assembly according to claim 1, characterized in that: The oil inlet of the housing body (1) is fixedly connected to a first flange (5), and a second flange (6) is installed on the first flange (5) by bolts. The second flange (6) is fixedly connected to the oil inlet pipe (7).

6. A hydraulic filter housing assembly according to claim 5, characterized in that: A positioning block (8) is fixedly connected to the second flange (6), and a positioning groove (9) is provided on the first flange (5). The positioning block (8) engages with the positioning groove (9).

7. A hydraulic filter housing assembly according to claim 6, characterized in that: The positioning block (8) has a "T" shaped structure, and the positioning groove (9) has a "T" shaped structure.

8. A hydraulic filter housing assembly according to claim 6, characterized in that: A rubber gasket (10) is installed on the second flange (6), and the rubber gasket (10) abuts against the first flange (5).

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