Tubular high-pressure filter

Abstract

The utility model discloses a tubular high-pressure filter which comprises a high-pressure-resistant shell, an oil inlet connector and an oil outlet connector are connected to the two ends of the high-pressure-resistant shell in an internal threaded mode, a filter element coaxial with the high-pressure-resistant shell is installed in the high-pressure-resistant shell, one end of the filter element is arranged on the oil outlet connector in a sleeved mode, and the other end of the filter element is compressed through a compression spring. The compression spring is arranged on the oil inlet joint in a sleeving manner and compresses and fixes the filter element in the inner cavity of the high-pressure-resistant shell; a sealing end cover is arranged at one end of the filter element, a groove used for containing the end of the compression spring is formed in the sealing end cover, an opening end cover is arranged at the other end of the filter element, and an O-shaped sealing ring is arranged in the opening end cover. According to the tubular high-pressure filter provided by the utility model, the two ends of the filter are connected in the pipeline, the filter can be mounted and fixed without a filter seat, the mounting position can be flexibly adjusted as required, and subsequent maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to a tubular high-pressure filter, belonging to the technical field of filters. Background Art

[0002] The quality of hydraulic oil has a great influence on the working performance of the hydraulic system. Many faults are caused by it. To prevent oil contamination, installing hydraulic oil filters in appropriate places can intercept pollutants in the oil, keep the oil clean, and ensure the normal operation of the oil system.

[0003] Patent No. CN108105209A discloses a filter, including a filter cartridge, a filter seat and a filter element. A liquid inlet channel and an oil outlet channel are arranged in the filter seat. The filter cartridge and the filter element form a filter. The filter is fixedly mounted on the filter seat. The oil inlet and oil outlet of the filter are respectively connected to the oil inlet channel and the oil outlet channel on the filter seat.

[0004] The filters disclosed in the above patents and filters in the prior art generally adopt a seat structure, that is, installation is achieved through a filter seat, the installation position is relatively fixed, and the installation position cannot be flexibly adjusted according to needs; the installation space of the filter is narrow, and maintenance is time-consuming and labor-intensive, which seriously affects construction operations.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] The utility model aims at the deficiencies in the background technology and provides a tubular high-pressure filter. Both ends of the filter are connected in the pipeline and can be installed and fixed without a filter seat. The installation position can be flexibly adjusted as needed, and subsequent maintenance is convenient.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A tubular high-pressure filter comprises a high-pressure resistant shell, the two ends of which are internally threadedly connected with an oil inlet joint and an oil outlet joint, a filter element coaxially arranged therewith is installed inside the high-pressure resistant shell, one end of the filter element is sleeved on the oil outlet joint, and the other end of the filter element is compressed by a compression spring, which is sleeved on the oil inlet joint. The compression spring compresses and fixes the filter element in the inner cavity of the high-pressure resistant shell.

[0009] Furthermore, a sealing end cover is provided at one end of the filter element, and a groove for accommodating the end of the compression spring is provided inside the sealing end cover.

[0010] Furthermore, an open end cover is provided at the other end of the filter element, and an O-shaped sealing ring is provided inside the open end cover.

[0011] Furthermore, there are oil passages penetrating the center of the oil inlet joint and the oil outlet joint.

[0012] Furthermore, both ends of the high pressure resistant shell are provided with internal threads.

[0013] Furthermore, the outer periphery of the oil inlet joint is provided with a first external thread matching with the internal thread of the high-pressure resistant shell; the inner end of the oil inlet joint is provided with a spring mounting portion of a cylindrical structure; and the interior of the oil inlet joint is provided with a second internal thread.

[0014] Furthermore, the outer periphery of the oil outlet joint is provided with a second external thread that matches the internal thread of the high-pressure resistant shell; the inner end of the oil outlet joint is provided with a filter element mounting portion with a cylindrical structure, and the filter element mounting portion is used for sleeve fixing of the end of the filter element; the interior of the oil outlet joint is provided with a third internal thread.

[0015] Furthermore, the high-pressure resistant shell is a straight tubular structure or a tubular structure with narrowed ends.

[0016] Furthermore, the outer ends of the oil inlet joint and the oil outlet joint are provided with hexagonal screwing parts integrally formed therewith.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] The utility model is mainly used in the pipeline after the hydraulic oil pump of the tractor, and is installed before the reversing valve of the high-pressure oil circuit. The high-pressure oil enters the reversing valve after passing through the filter, and various impurities such as flowing metal particles in the high-pressure oil are filtered out, thereby reducing the wear of various slide valves or solenoid valves, and improving the oil cleanliness of the subsequent actuators such as the hydraulic cylinder or motor, thereby greatly improving the service life of various actuator components;

[0019] Both ends of the filter are connected in the pipeline, and the installation position is flexible and unrestricted. It can be adjusted as needed, which is convenient for subsequent maintenance, and the maintenance is not limited by the narrow installation space;

[0020] The installation process of the filter element is convenient and reliable.

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural exploded view of the utility model;

[0024] Figure 3 It is a schematic diagram of the flow direction of the high-pressure oil in the utility model.

[0025] In the figure, 1-high pressure resistant shell, 11-internal thread; 2-oil inlet joint, 21-first external thread, 22-spring mounting portion, 23-second internal thread; 3-oil outlet joint, 31-second external thread, 32-filter element mounting portion, 33-third internal thread; 4-filter element, 41-sealing end cover, 42-opening end cover; 5-compression spring; 6-sealing ring. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] like Figure 1-Figure 3 As shown together, the utility model provides a tubular high-pressure filter, including a high-pressure resistant shell 1, the two ends of the high-pressure resistant shell 1 are internally threadedly connected with an oil inlet joint 2 and an oil outlet joint 3, a filter element 4 coaxially arranged therewith is installed inside the high-pressure resistant shell 1, one end of the filter element 4 is sleeved on the oil outlet joint 3, and the other end of the filter element 4 is compressed by a compression spring 5, the compression spring 5 is sleeved on the oil inlet joint 2, and the compression spring 5 compresses and fixes the filter element 4 in the inner cavity of the high-pressure resistant shell 1.

[0028] There are oil passages penetrating the center of the oil inlet joint 2 and the oil outlet joint 3. High-pressure oil enters the inner cavity of the high-pressure resistant housing 1 from the oil passage in the oil inlet joint 2, and flows out of the inner cavity of the high-pressure resistant housing 1 from the oil passage in the oil outlet joint 3 after being filtered by the filter element 4.

[0029] Internal threads 11 are provided in both ends of the high pressure resistant shell 1 .

[0030] The outer periphery of the oil inlet connector 2 is provided with a first external thread 21 which matches with the internal thread 11 of the high pressure resistant housing 1 .

[0031] The inner end of the oil inlet connector 2 is provided with a spring mounting portion 22 of a cylindrical structure, and the spring mounting portion 22 is used for sleeve fixing of the end of the compression spring 5 .

[0032] The oil inlet connector 2 is provided with a second internal thread 23 , and the oil inlet connector 2 is connected to the high-pressure oil circuit via the second internal thread 23 .

[0033] The outer periphery of the oil outlet joint 3 is provided with a second external thread 31 which matches with the internal thread 11 of the high pressure resistant housing 1 .

[0034] The inner end of the oil outlet joint 3 is provided with a filter element mounting portion 32 of a cylindrical structure, and the filter element mounting portion 32 is used for sleeve mounting and fixing the end of the filter element 4.

[0035] The oil outlet connector 3 is provided with a third internal thread 33 inside, and the oil outlet connector 3 is connected to the high-pressure oil circuit via the third internal thread 33 .

[0036] The filter element 4 is a high-precision stainless steel folding structure. A sealing end cover 41 is provided at one end of the filter element 4. A groove for accommodating the end of the compression spring 5 is provided inside the sealing end cover 41. An open end cover 42 is provided at the other end of the filter element 4. An O-shaped sealing ring 6 is provided inside the open end cover 42. The sealing ring 6 securely seals the connection between the filter element 4 and the oil outlet joint 3.

[0037] The high pressure resistant shell 1 in the utility model can be a straight tubular structure, or a tubular structure with narrowed ends.

[0038] The outer ends of the oil inlet connector 2 and the oil outlet connector 3 are provided with hexagonal screwing parts (not shown in the figure) integrally formed therewith, so as to facilitate screwing of the oil inlet connector 2 and the oil outlet connector 3 .

[0039] The specific working principle of this utility model:

[0040] The high-pressure oil enters the inner cavity of the high-pressure resistant shell from the oil inlet joint, is filtered by the filter element, and then flows out of the inner cavity of the high-pressure resistant shell from the oil outlet joint.

[0041] The utility model is mainly used in the pipeline after the hydraulic oil pump of the tractor, and is installed before the reversing valve of the high-pressure oil circuit. The high-pressure oil enters the reversing valve after passing through the filter, and various impurities such as metal particles flowing in the high-pressure oil are filtered out, thereby reducing the wear of various slide valves or solenoid valves, and improving the oil cleanliness of subsequent actuators such as hydraulic cylinders or motors, thereby greatly improving the service life of various actuator components.

[0042] The two ends of the filter are connected in the pipeline, and the installation position is flexible and unrestricted, and can be adjusted as needed. The filter element installation process is convenient and reliable.

[0043] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. Tubular high pressure filter, characterized by: The invention comprises a high-pressure resistant housing (1), wherein the two ends of the high-pressure resistant housing (1) are internally threadedly connected with an oil inlet joint (2) and an oil outlet joint (3), and a filter element (4) coaxially arranged therewith is installed inside the high-pressure resistant housing (1), one end of the filter element (4) is sleeved on the oil outlet joint (3), and the other end of the filter element (4) is compressed by a compression spring (5), the compression spring (5) is sleeved on the oil inlet joint (2), and the compression spring (5) compresses and fixes the filter element (4) in the inner cavity of the high-pressure resistant housing (1).

2. The tubular high pressure filter according to claim 1, characterized in that: A sealing end cover (41) is provided at one end of the filter element (4), and a groove for accommodating the end of the compression spring (5) is provided inside the sealing end cover (41).

3. The tubular high pressure filter according to claim 2, characterized in that: The other end of the filter element (4) is provided with an open end cover (42), and an O-shaped sealing ring (6) is provided inside the open end cover (42).

4. The tubular high pressure filter according to claim 1, characterized in that: The oil inlet joint (2) and the oil outlet joint (3) are both provided with oil passages penetrating the center positions thereof.

5. The tubular high pressure filter according to claim 1, characterized in that: Internal threads (11) are provided in both ends of the high-pressure resistant casing (1).

6. The tubular high pressure filter according to claim 5, characterized in that: The outer periphery of the oil inlet joint (2) is provided with a first external thread (21) which matches the internal thread (11) of the high-pressure resistant housing (1); the inner end of the oil inlet joint (2) is provided with a spring mounting portion (22) of a cylindrical structure; and the interior of the oil inlet joint (2) is provided with a second internal thread (23).

7. The tubular high pressure filter according to claim 5, characterized in that: The outer periphery of the oil outlet joint (3) is provided with a second external thread (31) which matches the internal thread (11) of the high-pressure resistant housing (1); the inner end of the oil outlet joint (3) is provided with a filter element mounting portion (32) of a cylindrical structure, and the filter element mounting portion (32) is used for sleeve mounting and fixing the end of the filter element (4); and the interior of the oil outlet joint (3) is provided with a third internal thread (33).

8. The tubular high pressure filter according to claim 1, characterized in that: The high-pressure resistant shell (1) is a straight tubular structure or a tubular structure with narrowed ends at both ends.

9. The tubular high pressure filter according to claim 1, characterized in that: The outer ends of the oil inlet joint (2) and the oil outlet joint (3) are provided with hexagonal screwing portions integrally formed therewith.

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