Hydraulic oil filter

Abstract

The utility model discloses a hydraulic oil filter. According to the technical scheme, the filter screen assembly is arranged between the upper cover and the lower cover, the upper cover and the lower cover are both annularly arranged, the cross section of the filter screen assembly is annular, a connecting ring is arranged on the upper cover, the connecting ring and the upper cover are coaxially arranged, two hanging lugs are arranged on the outer side of the connecting ring, and the two hanging lugs are arranged on the outer side of the connecting ring. According to the hydraulic oil filter, when the hydraulic oil filter is replaced by grabbing the lifting handle, the hydraulic oil filter can be conveniently grabbed by hands and conveniently taken out and replaced, the lifting handle and the lifting lug are rotationally connected, the lifting handle can be folded after being installed, and therefore the hydraulic oil filter can be conveniently replaced. Assembly and use of the hydraulic oil filter are not affected, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filter elements, and more specifically, to a hydraulic oil filter. Background Art

[0002] The hydraulic oil filter is used in a hydraulic system to filter hydraulic oil. It filters the metal powders and other mechanical impurities worn by each component in the hydraulic system to keep the oil circuit clean, and can extend the service life of the hydraulic system. After the hydraulic oil filter element is used for a certain period of time, there are many impurities attached to its surface, and the passing rate of hydraulic oil decreases, so it needs to be replaced. When replacing the existing hydraulic oil filter, the filter is attached with hydraulic oil and impurities, with a heavy mass and a slippery surface, which is not easy to grasp by hand and inconvenient to take out. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a hydraulic oil filter to solve the above technical problems.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a hydraulic oil filter, including an upper cover, a lower cover, and a filter screen assembly arranged between the upper cover and the lower cover. The upper cover and the lower cover are both annularly arranged. The cross-section of the filter screen assembly is annular. A connecting ring is provided on the upper cover, and the connecting ring is coaxially arranged with the upper cover. Hanging ears are provided on the outer side of the connecting ring. There are two hanging ears, which are centrosymmetric along the axis center of the connecting ring. A handle is provided on the hanging ear, and the handle is rotatably connected to the hanging ear.

[0005] As a further improvement of the utility model, there is an upper sealing groove between the inner side of the connecting ring and the upper cover.

[0006] As a further improvement of the utility model, the connecting ring and the upper cover are fixedly connected by bump welding.

[0007] As a further improvement of the utility model, the filter screen assembly is formed by folding a filter screen, and the head and tail ends of the filter screen are pasted with glue to form an annular filter screen assembly.

[0008] As a further improvement of the utility model, a lower retaining ring is provided on the lower cover, and the lower retaining ring is coaxially arranged with the lower cover. There is a lower sealing groove between the outer side of the lower retaining ring and the lower cover.

[0009] As a further improvement of the utility model, the lower retaining ring and the lower cover are fixedly connected by bump welding.

[0010] As a further improvement of the utility model, the hanging ear is formed by stamping the connecting ring, and the hanging ear is integrally arranged with the connecting ring.

[0011] As a further improvement of the present utility model, a clamping block is provided on the connecting ring, and the clamping block is adjacent to the rotation path of the handle.

[0012] The beneficial effects of the present utility model are as follows: by providing a handle, it is convenient to grab by hand when replacing the hydraulic oil filter, facilitating removal and replacement. Moreover, the handle is rotatably connected to the hanging ear, and after installation, the handle can be folded up, without affecting the assembly and use of the hydraulic oil filter, and it is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic cross-sectional structure view of the present utility model;

[0014] Figure 2 is a schematic top view structure view of the present utility model.

[0015] Marking description: 1. Upper cover; 2. Lower cover; 3. Filter screen assembly; 4. Connecting ring; 41. Hanging ear; 42. Handle; 43. Upper sealing groove; 44. Clamping block; 5. Lower retaining ring; 51. Lower sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will further elaborate on the present utility model in conjunction with the embodiments given in the drawings.

[0017] Refer to Figure 1 one Figure 2 As shown, the hydraulic oil filter of this embodiment includes an upper cover 1, a lower cover 2, and a filter screen assembly 3 disposed between the upper cover 1 and the lower cover 2. The upper cover 1 and the lower cover 2 are both annularly arranged, the cross-section of the filter screen assembly 3 is annular, a connecting ring 4 is provided on the upper cover 1, the connecting ring 4 is coaxially arranged with the upper cover 1, hanging ears 41 are provided on the outer side of the connecting ring 4, there are two hanging ears 41, which are centrosymmetric along the axis center of the connecting ring 4, and a handle 42 is provided on the hanging ears 41, and the handle 42 is rotatably connected to the hanging ears 41.

[0018] Through the above technical solution, when replacing this hydraulic oil filter, the handle 42 can be grabbed to remove the hydraulic oil filter, and then replacement can be carried out. The handle 42 is convenient to grab, avoiding slipping, and is convenient to remove. The handle 42 is rotatably arranged on the hanging ear. After replacing with a new hydraulic oil filter, the handle 42 can be rotated to fold it up, without affecting the assembly and use of the hydraulic oil filter, and it is very convenient to use.

[0019] Specifically, the two hanging ears 41 are centrosymmetric along the axis center of the hydraulic oil filter. When grabbing and pulling out the hanging ears 41, the force is balanced, making it more convenient to pull out.

[0020] As a specific implementation of the improvement, an upper sealing groove 43 is provided between the inner side of the connecting ring 4 and the upper cover 1.

[0021] Through the above technical solution, the upper sealing groove 43 is used to install the upper sealing ring, so that the position of the upper sealing ring is stable, thereby extending the service life of the hydraulic system.

[0022] As a specific embodiment of the improvement, the connecting ring 4 and the upper cover 1 are fixedly connected by bump welding.

[0023] Through the above technical solution, the bump welding is fixedly connected, and after fixing, the stability is high and the production efficiency is high.

[0024] As a specific embodiment of the improvement, the filter screen assembly 3 is formed by folding a filter screen, and the head and tail ends of the filter screen are pasted with glue to form an annular filter screen assembly 3.

[0025] Through the above technical solution, the filter screen is fixedly pasted with high-temperature and high-pressure quick-drying glue, the production efficiency is high, and the problems of iron sheet rust and looseness existing in the existing iron sheet clamping fixing method are avoided.

[0026] When the iron sheet is loose, gaps will appear at the connection of the head and tail of the filter screen, and part of the hydraulic oil will pass through the hydraulic oil filter without being filtered.

[0027] When the iron sheet rusts, it will increase the impurities in the hydraulic oil, cause the hydraulic oil filter to be blocked in a shorter time, shorten the replacement cycle of the hydraulic oil filter, and increase the user cost.

[0028] Fixing by high-temperature and high-pressure quick-drying glue can avoid the above problems.

[0029] As a specific embodiment of the improvement, a lower retaining ring 5 is provided on the lower cover 2, the lower retaining ring 5 is coaxially arranged with the lower cover 2, and a lower sealing groove 51 is formed between the outer side of the lower retaining ring 5 and the lower cover 2.

[0030] Through the above technical solution, the lower sealing groove 51 is used to install the lower sealing ring, so that the position of the lower sealing ring is stable, thereby extending the service life of the hydraulic system.

[0031] As a specific embodiment of the improvement, the lower retaining ring 5 and the lower cover 2 are fixedly connected by bump welding.

[0032] Through the above technical solution, the bump welding is fixedly connected, and after fixing, the stability is high and the production efficiency is high.

[0033] As a specific embodiment of the improvement, the lug 41 is formed by stamping the connecting ring 4, and the lug 41 and the connecting ring 4 are integrally arranged.

[0034] Through the above technical solution, the lug 41 is formed by stamping the connecting ring 4, with high structural strength and improved stability during use.

[0035] As a specific implementation of the improvement, a clamping block 44 is provided on the connecting ring 4, and the clamping block 44 is adjacent to the rotation path of the handle 42.

[0036] Through the above technical solution, when the hydraulic oil filter is installed in the equipment, the clamping block 44 abuts against the handle 42, and the position of the handle 42 is stuck and fixed. When the hydraulic oil filter needs to be replaced, grasping the handle 42 can separate the lifting part from the clamping block 44, and then it can be removed and replaced.

[0037] This can avoid the handle 42 from shaking during use, reduce abnormal noises, and improve the stability during use.

[0038] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A hydraulic oil filter, comprising an upper cover (1), a lower cover (2), and a filter assembly (3) arranged between the upper cover (1) and the lower cover (2), wherein the upper cover (1) and the lower cover (2) are both arranged in an annular shape, and the cross section of the filter assembly (3) is annular, and is characterized in that: The upper cover (1) is provided with a connecting ring (4), the connecting ring (4) and the upper cover (1) are coaxially arranged, the outer side of the connecting ring (4) is provided with a hanging ear (41), the hanging ear (41) has two, and is centrally symmetrical along the axis of the connecting ring (4), the hanging ear (41) is provided with a handle (42), and the handle (42) is rotatably connected to the hanging ear (41).

2. The hydraulic oil filter according to claim 1, characterized in that: An upper sealing groove (43) is provided between the inner side of the connecting ring (4) and the upper cover (1).

3. The hydraulic oil filter according to claim 2, characterized in that: The connecting ring (4) is fixedly connected to the upper cover (1) by convex spot welding.

4. The hydraulic oil filter according to claim 1, characterized in that: The filter assembly (3) is formed by folding a filter, and the head and tail ends of the filter are glued together to form a ring-shaped filter assembly (3).

5. The hydraulic oil filter according to claim 1, characterized in that: The lower cover (2) is provided with a lower retaining ring (5), the lower retaining ring (5) is coaxially arranged with the lower cover (2), and a lower sealing groove (51) is provided between the outer side of the lower retaining ring (5) and the lower cover (2).

6. The hydraulic oil filter according to claim 5, characterized in that: The lower retaining ring (5) is fixedly connected to the lower cover (2) by convex spot welding.

7. The hydraulic oil filter according to claim 1, characterized in that: The hanging ear (41) is formed by stamping the connecting ring (4), and the hanging ear (41) and the connecting ring (4) are arranged integrally.

8. The hydraulic oil filter according to claim 1, characterized in that: A clamping block (44) is provided on the connecting ring (4), and the clamping block (44) is adjacent to the rotation path of the handle (42).

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