Novel oil pick-up integrated filter

Abstract

The utility model relates to filter technical field provides a novel oil absorption integrated filter, including filter casing and the first check valve, second check valve and oil absorption filter core of setting in filter casing, filter casing has first oil inlet A1, second oil inlet A2, first oil outlet S1, second oil outlet S2, oil return port T, the input of oil absorption filter core is linked with first oil inlet A1, second oil inlet A2, and the output of oil absorption filter core is linked with the input of second check valve, first oil outlet S1, second oil outlet S2, the input of first check valve is linked with first oil inlet A1, second oil inlet A2, and the output of first check valve, the output of second check valve is linked with oil return port T. The utility model integrates oil absorption filter and oil return filter in a compact casing, realizes double function through common channel or modularization internal structure, effectively reduces system volume and arrangement difficulty.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a novel integrated oil suction and return filter. Background Technology

[0002] With the widespread application of hydraulic technology in engineering machinery and industrial automation, the requirements for reliability and ease of maintenance of hydraulic systems are constantly increasing. The cleanliness of hydraulic oil directly affects system stability and component life, while oil contamination is a major cause of system failure.

[0003] Traditionally, suction and return filters are located separately in the hydraulic system. These filters occupy a large space, require independent interfaces for suction and return, and necessitate the configuration of corresponding pipes and mounting brackets. This results in a complex hydraulic system structure, inconvenient maintenance, and difficulty in meeting the development needs of modern hydraulic systems for integration and high efficiency. Utility Model Content

[0004] This utility model mainly solves the technical problems of complex hydraulic system structure and inconvenient maintenance caused by the traditional separate installation of suction and return oil filters in the hydraulic system. It proposes a new type of integrated suction and return oil filter that integrates the suction and return oil filters into a compact housing. It achieves dual functions through a shared channel or modular internal structure, effectively reducing the system size and layout difficulty.

[0005] This utility model provides a novel integrated oil suction and return filter, comprising: a filter housing and a first one-way valve, a second one-way valve and an oil suction and return filter element disposed within the filter housing;

[0006] The filter housing has a first oil inlet A1, a second oil inlet A2, a first oil outlet S1, a second oil outlet S2, and an oil return port T;

[0007] The first oil outlet S1 and the second oil outlet S2 are used to connect to the oil replenishment pump;

[0008] The input end of the suction oil filter element is connected to the first oil inlet A1 and the second oil inlet A2, and the output end of the suction oil filter element is connected to the input end of the second one-way valve, the first oil outlet S1, and the second oil outlet S2.

[0009] The input end of the first check valve is connected to the first oil inlet A1 and the second oil inlet A2, and the output ends of the first check valve and the second check valve are connected to the return oil port T.

[0010] The return port T is used to connect to the oil tank.

[0011] Preferably, the filter housing has a first pressure testing port X and a second pressure testing port M;

[0012] The first pressure testing port X and the second pressure testing port M are connected to the input end of the second one-way valve.

[0013] Preferably, the opening pressure of the first check valve is higher than the opening pressure of the second check valve.

[0014] The novel integrated oil suction and return filter provided by this utility model has the following advantages compared with the prior art:

[0015] 1. Higher Structural Integration: Traditional oil suction and return filters are arranged separately, resulting in large volume, numerous connecting pipes, and complex structure. This invention integrates the oil suction and return filters into a compact housing, achieving dual functions through a shared channel or modular internal structure, effectively reducing system size and layout complexity. Integrating the oil suction and return functions and optimizing the internal structure for simultaneous filtration simplifies system piping and reduces installation volume, while simultaneously improving filtration accuracy and flow capacity, reducing pressure drop and system energy consumption.

[0016] 2. Simplified system piping, saving installation space: Due to the integrated tubular design, the original independent interfaces, pipes, and mounting brackets required for oil suction and return are greatly simplified, significantly saving space inside the oil tank or equipment. Maintenance is convenient, making it more suitable for miniaturized and modular hydraulic systems. The integrated design also significantly improves maintenance efficiency and equipment reliability, adapting to the trend of hydraulic systems developing towards high pressure, miniaturization, and intelligence, and has broad application prospects.

[0017] 3. Higher flow efficiency and lower energy consumption: Optimized internal flow channels effectively reduce flow resistance and pressure drop, increasing the speed and efficiency of oil flow through the filter element. This not only improves system response speed but also reduces energy loss and lowers the burden on the hydraulic pump.

[0018] 4. Easier Maintenance: The integrated design allows for centralized arrangement of filter elements, facilitating inspection and replacement. Users can complete maintenance without disassembling multiple components, reducing equipment downtime and improving maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the novel integrated oil suction and return filter provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the novel integrated oil suction and return filter provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the novel integrated oil suction and return filter provided by this utility model.

[0022] Reference numerals in the attached drawings: 1. Filter housing; 2. First check valve; 3. Second check valve; 4. Oil return filter element; 5. Oil tank; 6. First oil inlet A1; 7. Second oil inlet A2; 8. First oil outlet S1; 9. Second oil outlet S2; 10. Oil return port T. Detailed Implementation

[0023] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0024] like Figure 1-3 As shown in the figure, a novel integrated oil suction and return filter provided by this utility model includes: a filter housing 1 and a first one-way valve 2, a second one-way valve 3 and an oil suction and return filter element 4 disposed in the filter housing 1.

[0025] The filter housing 1 has a first oil inlet A1 6, a second oil inlet A2 7, a first oil outlet S1 8, a second oil outlet S2 9, and an oil return outlet T10;

[0026] The first oil inlet A1 6 and the second oil inlet A2 7 are used to connect to the return oil port of the control valve group of the hydraulic system; the first oil outlet S1 8 and the second oil outlet S2 9 are used to connect to the replenishing pump.

[0027] The input end of the suction oil filter element 4 is connected to the first oil inlet A1 6 and the second oil inlet A2 7, and the output end of the suction oil filter element 4 is connected to the input end of the second one-way valve 3, the first oil outlet S1 8, and the second oil outlet S2 9.

[0028] The input end of the first check valve 2 is connected to the first oil inlet A1 6 and the second oil inlet A2 7, and the output ends of the first check valve 2 and the second check valve 3 are connected to the return oil port T10. The opening pressure of the first check valve 2 is higher than the opening pressure of the second check valve 3. The opening pressure of the first check valve 2 is higher (the opening pressure threshold is, for example, 2.5 bar), while the opening pressure of the second check valve 3 is lower (the opening pressure threshold is, for example, 0.5 bar).

[0029] The return port T10 is used to connect to the oil tank 5.

[0030] Furthermore, the filter housing 1 has a first pressure testing port X and a second pressure testing port M; the first pressure testing port X and the second pressure testing port M are connected to the input end of the second one-way valve 3.

[0031] The working principle of this novel integrated oil suction and return filter:

[0032] I. Oil Suction Process

[0033] When the filter is in the suction oil return working state, the replenishing oil pump is operating normally. At this time, the hydraulic oil entering from the first oil inlet A16 and the second oil inlet A27 first passes through the suction oil filter element 4 for effective filtration. The filtered oil is divided into two parts: one part is delivered to the replenishing oil pump through the first oil outlet S18 and the second oil outlet S29 to provide the system with the required replenishing oil pressure; the other part of the excess oil flows back to the oil tank 5 through the opening of the second check valve 3 with lower pressure, completing the entire suction and return oil process and ensuring the continuity of the system's oil supply and the cleanliness of the oil.

[0034] II. Filter Cartridge Cloggedness

[0035] When filter element 4 becomes clogged, the hydraulic oil entering from the first inlet A1 6 and the second inlet A2 7 cannot pass smoothly through the suction oil filter element 4 for filtration, causing the pressure at the inlet to gradually increase. When the pressure rises to the opening pressure threshold (2.5 bar) of the first check valve 2, the system will automatically open the first check valve 2, allowing the hydraulic oil to bypass the suction oil filter element 4 and flow directly back to the oil tank 5. At this time, the first check valve 2 acts as a bypass, while the second check valve 3 functions like a safety valve, effectively preventing system overpressure, protecting hydraulic components from damage, and ensuring the reliability and safety of system operation.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel integrated oil suction and return filter, characterized in that, include: The filter housing (1) and the first check valve (2), the second check valve (3) and the suction oil filter element (4) disposed in the filter housing (1); The filter housing (1) has a first oil inlet A1 (6), a second oil inlet A2 (7), a first oil outlet S1 (8), a second oil outlet S2 (9), and an oil return outlet T (10); The first oil outlet S1 (8) and the second oil outlet S2 (9) are used to connect to the oil replenishment pump; The input end of the suction oil filter element (4) is connected to the first oil inlet A1 (6) and the second oil inlet A2 (7), and the output end of the suction oil filter element (4) is connected to the input end of the second one-way valve (3), the first oil outlet S1 (8), and the second oil outlet S2 (9). The input end of the first check valve (2) is connected to the first oil inlet A1 (6) and the second oil inlet A2 (7), and the output end of the first check valve (2) and the output end of the second check valve (3) are connected to the return oil port T (10). The return port T(10) is used to connect to the oil tank (5).

2. The novel integrated oil suction and return filter according to claim 1, characterized in that, The filter housing (1) has a first pressure measuring port X and a second pressure measuring port M; The first pressure testing port X and the second pressure testing port M are connected to the input end of the second check valve (3).

3. The novel integrated oil suction and return filter according to claim 1, characterized in that, The opening pressure of the first check valve (2) is higher than the opening pressure of the second check valve (3).

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