Oil return pipe assembly

Abstract

The utility model discloses an oil return pipe assembly which comprises an oil return pipe A and an oil return pipe B. A filter shell and an end cover are installed between the oil return pipe A and the oil return pipe B, the end cover is communicated with an inner cavity of the oil return pipe A, the filter shell is communicated with an inner cavity of the oil return pipe B, the filter shell and the end cover are fixedly connected through butterfly screws, and a filter element used for filtering hydraulic oil is installed in the filter shell. A second pipe body integrally formed with the end cover is arranged in the end cover, the inner end of the second pipe body abuts against the end of the filter element, a plurality of evenly-distributed flow dividing holes are formed in the periphery of the inner end of the second pipe body, and the outer end of the second pipe body is connected with an oil return pipe A; a plurality of through holes which are uniformly distributed are formed in the periphery of the end cover, butterfly screws are respectively arranged in the through holes in a penetrating manner, and the butterfly screws are connected with the end part of the filter shell after penetrating through the through holes. According to the oil return pipe assembly provided by the utility model, the mounting position of the filtering part can be flexibly adjusted according to mounting requirements, and the filter element is convenient to clean or replace.

Description

Technical Field

[0001] The utility model relates to an oil return pipe component and belongs to the technical field of hydraulic systems. Background Art

[0002] The hydraulic oil tank return line is the pipe that returns the hydraulic oil in the hydraulic system to the tank after it has been used. Its main function is to ensure that the hydraulic oil can be smoothly returned to the tank after the work is completed so that it can be pumped back into the hydraulic system by the hydraulic pump, realizing the recycling of the hydraulic oil.

[0003] The return oil pipe is usually equipped with a filter component, which can effectively intercept and remove solid impurities such as metal particles in the hydraulic oil, preventing these pollutants from being sucked into the system again by the pump and causing damage to the hydraulic components.

[0004] The filter components in the prior art generally adopt a seat-type structure and are fixed by a mounting seat, resulting in that their installation position cannot be flexibly adjusted according to needs; due to the limitations of the filter component structure, the internal filter element is generally difficult to clean or replace.

[0005] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0006] In view of the deficiencies in the background technology, the utility model provides an oil return pipe assembly, wherein the installation position of the filter component can be flexibly adjusted according to installation requirements, and the cleaning or replacement of the filter element is convenient.

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

[0008] The oil return pipe assembly includes an oil return pipe A and an oil return pipe B. A filter housing and an end cover are installed between the oil return pipes A and B. The end cover is connected to the inner cavity of the oil return pipe A, and the filter housing is connected to the inner cavity of the oil return pipe B. The filter housing and the end cover are fixed together by butterfly screws. A filter element for hydraulic oil filtration is installed inside the filter housing;

[0009] A second tube body integrally formed with the end cap is provided inside the end cap, the inner end of the second tube body abuts against the end of the filter element, and a plurality of evenly distributed diversion holes are opened on the periphery of the inner end of the second tube body.

[0010] Furthermore, the outer end of the second pipe body is connected to the oil return pipe A.

[0011] Furthermore, a plurality of evenly distributed through holes are opened on the periphery of the end cover, butterfly screws are respectively passed through the through holes, and the butterfly screws are connected to the end of the filter housing after passing through the through holes.

[0012] Furthermore, a shaft shoulder is provided in the end portion of the filter housing close to the end cover, and a plurality of evenly distributed screw holes are opened on the shaft shoulder. The screw holes are arranged in a one-to-one correspondence with the through holes on the end cover, and the screw holes are used for inserting and locking butterfly screws.

[0013] Furthermore, a sealing gasket is installed between the filter housing and the end cover.

[0014] Furthermore, a first tube body integrally formed therewith is provided in the end portion of the filter housing away from the end cover, the inner end of the first tube body is used for inserting and fixing the open end of the filter element, and the inner end of the first tube body is communicated with the inner cavity of the filter element.

[0015] Furthermore, the outer end of the first pipe body is connected to the oil return pipe B.

[0016] Furthermore, an O-ring is installed at the connection between the filter element and the filter housing.

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

[0018] High-pressure oil first enters the second tube body of the end cover through the return oil pipe A, and is diverted to the filter cavity between the filter housing and the filter element through the diversion hole, so that the hydraulic oil is evenly filtered and impurities are trapped outside the filter element. The filtered high-pressure oil enters the inner cavity of the filter element, then enters the first tube body of the filter housing, and finally flows out through the return oil pipe B;

[0019] The utility model installs a high-pressure oil filter component in the oil return pipe, and the installation position can be flexibly adjusted according to needs; the end cover and the filter housing in the utility model are fastened together by butterfly screws, which facilitates cleaning and replacement of the filter element in the filter housing.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 3 It is a structural diagram of the filter housing;

[0024] Figure 4 It is a structural diagram of the end cover.

[0025] In the figure, 1-filter housing, 11-shaft shoulder, 12-screw hole, 13-first tube body; 2-end cover, 21-through hole, 22-second tube body, 23-diversion hole; 3-return oil pipe A, 4-return oil pipe B, 5-filter element, 6-butterfly screw, 7-sealing gasket, 8-O-ring. DETAILED DESCRIPTION

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

[0027] like Figures 1-4 As shown together, the utility model provides an oil return pipe assembly, including an oil return pipe A3 and an oil return pipe B4, a filter housing 1 and an end cover 2 are installed between the oil return pipe A3 and the oil return pipe B4, the end cover 2 is connected to the inner cavity of the oil return pipe A3, the filter housing 1 is connected to the inner cavity of the oil return pipe B4, the filter housing 1 and the end cover 2 are fixedly connected by a butterfly screw 6, and a filter element 5 for hydraulic oil filtering is installed inside the filter housing 1.

[0028] The end cap 2 is provided with a second tube body 22 integrally formed therewith. The outer end of the second tube body 22 is connected to the oil return pipe A3, and the inner end of the second tube body 22 abuts against the end of the filter element 5.

[0029] The inner end of the second tube body 22 is provided with a plurality of evenly distributed diversion holes 23 . The diversion holes 23 evenly divert the hydraulic oil in the second tube body 22 to the filter cavity between the filter housing 1 and the filter element 5 , so that the hydraulic oil is evenly filtered.

[0030] The end cap 2 is provided with a plurality of evenly distributed through holes 21, each of which is penetrated by a butterfly screw 6. The butterfly screw 6 passes through the through holes 21 and is connected to the end of the filter housing 1. The end cap 2 and the filter housing 1 are fastened together by the butterfly screw 6, which facilitates the installation and removal of the filter element 5 in the filter housing 1.

[0031] The filter housing 1 is provided with a shaft shoulder 11 at the end near the end cover 2. The shaft shoulder 11 is provided with multiple evenly distributed screw holes 12. The screw holes 12 are arranged in a one-to-one correspondence with the through holes 21 on the end cover 2. The screw holes 12 are used for inserting and locking the butterfly screws 6.

[0032] A sealing gasket 7 is installed between the filter housing 1 and the end cover 2 , and the sealing gasket 7 is used to ensure effective sealing between the filter housing 1 and the end cover 2 .

[0033] A first tube body 13 integrally formed with the filter housing 1 is provided in the end away from the end cover 2. The inner end of the first tube body 13 is used for inserting and fixing the open end of the filter element 5. The inner end of the first tube body 13 is connected to the inner cavity of the filter element 5, and the outer end of the first tube body 13 is connected to the return oil pipe B4.

[0034] An O-ring 8 is installed at the connection between the filter element 5 and the filter housing 1 , and the O-ring 8 is used to ensure effective sealing between the filter element 5 and the filter housing 1 .

[0035] The specific working principle of this utility model:

[0036] The high-pressure oil first flows into the return oil pipe A3, then enters the second tube body 22 of the end cover 2, and is diverted through the diversion hole 23 to the filter clamp cavity between the filter housing 1 and the filter element 5, so that the hydraulic oil is evenly filtered and impurities are intercepted outside the filter element 5. The filtered high-pressure oil enters the inner cavity of the filter element 5, then enters the first tube body 13 of the filter housing 1, and finally flows out through the return oil pipe B4.

[0037] The utility model installs a high-pressure oil filter component in the oil return pipe, and the installation position can be flexibly adjusted according to needs; the end cover and the filter housing in the utility model are fastened together by butterfly screws, which facilitates cleaning and replacement of the filter element in the filter housing.

[0038] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. Oil return pipe assembly, characterized by: It includes an oil return pipe A (3) and an oil return pipe B (4), a filter housing (1) and an end cover (2) are installed between the oil return pipe A (3) and the oil return pipe B (4), the end cover (2) is connected to the inner cavity of the oil return pipe A (3), the filter housing (1) is connected to the inner cavity of the oil return pipe B (4), the filter housing (1) and the end cover (2) are fixedly connected by butterfly screws (6), and a filter element (5) for filtering hydraulic oil is installed inside the filter housing (1); A second tube body (22) integrally formed therewith is provided inside the end cap (2), the inner end of the second tube body (22) abuts against the end of the filter element (5), and a plurality of evenly distributed diversion holes (23) are provided on the periphery of the inner end of the second tube body (22).

2. The oil return pipe assembly according to claim 1, characterized in that: The outer end of the second tube body (22) is connected to the oil return pipe A (3).

3. The oil return pipe assembly according to claim 1, wherein: The outer periphery of the end cover (2) is provided with a plurality of evenly distributed through holes (21), each of which is penetrated by a butterfly screw (6), which passes through the through hole (21) and is connected to the end of the filter housing (1).

4. The oil return pipe assembly according to claim 3, characterized in that: The filter housing (1) is provided with a shaft shoulder (11) at the end portion close to the end cover (2). The shaft shoulder (11) is provided with a plurality of evenly distributed screw holes (12). The screw holes (12) are arranged in a one-to-one correspondence with the through holes (21) on the end cover (2). The screw holes (12) are used for inserting and locking the butterfly screws (6).

5. The oil return pipe assembly according to claim 1, characterized in that: A sealing gasket (7) is installed between the filter housing (1) and the end cover (2).

6. The oil return pipe assembly according to claim 1, characterized in that: A first tube body (13) formed integrally with the filter housing (1) is provided in the end portion away from the end cover (2); the inner end of the first tube body (13) is used for inserting and fixing the open end of the filter element (5); and the inner end of the first tube body (13) is communicated with the inner cavity of the filter element (5).

7. The oil return pipe assembly according to claim 6, characterized in that: The outer end of the first tube body (13) is connected to the oil return pipe B (4).

8. The oil return pipe assembly according to claim 1, wherein: An O-ring (8) is installed at the connection between the filter element (5) and the filter housing (1).

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