Circulating system for preventing blockage of hydraulic oil pipeline

Abstract

The utility model relates to the technical field of hydraulic oil circulating systems, and discloses an anti-blocking circulating system for a hydraulic oil pipeline, which solves the problem that the existing hydraulic oil circulating pipeline is easy to block, and comprises an oil tank, an oil supply pipe and an oil return combined pipeline, and the oil supply pipe and the oil return combined pipeline are both connected between the oil tank and oil using equipment. The oil return combined pipeline is composed of a first oil return main pipe, a first oil return branch pipe, a second oil return branch pipe, a second oil return main pipe, a first filter, a second filter, an auxiliary oil tank, a pulse oil pump, a three-way pulse washing oil supply pipe and a three-way pulse washing oil return pipe. By means of the circulating system, hydraulic oil can be circulated, the pipeline can be cleaned, the hydraulic oil can be filtered, and the circulating pipeline is prevented from being blocked.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic oil circulation systems, specifically a circulation system for preventing blockage in hydraulic oil pipelines. Background Technology

[0002] Many industrial equipment (such as die-casting machines, stamping machines, textile machinery, ship main engines, hydraulic pump stations, etc.) require hydraulic oil. Hydraulic oil needs to be circulated during operation to reduce costs. During the circulation of hydraulic oil, the piston rod of the cylinder, the cylinder body, and the internal friction of each valve group are frequent, which will generate a lot of impurities such as iron filings. When there are a lot of impurities such as iron filings, the hydraulic oil pipeline is prone to blockage, affecting the stability of use. Therefore, this application proposes a circulation system for preventing blockage of hydraulic oil pipelines. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a circulation system for preventing blockage of hydraulic oil pipelines, which effectively solves the problem of easy blockage in existing hydraulic oil circulation pipelines.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a circulation system for preventing blockage in hydraulic oil pipelines, comprising an oil tank, an oil supply pipe, and a return oil combination pipeline. Both the oil supply pipe and the return oil combination pipeline are connected between the oil tank and the oil-using equipment. The return oil combination pipeline consists of a main return oil pipe, a branch return oil pipe, a branch return oil pipe, a second main return oil pipe, a first filter, a second filter, an auxiliary oil tank, a pulse oil pump, a three-way pulse flushing oil supply pipe, and a three-way pulse flushing oil return pipe. The main return oil pipe... One end of the main oil return pipe is connected to the oil-using equipment, and one end of the main oil return pipe 2 is connected to the oil tank. Both the main oil return pipe 1 and the main oil return pipe 2 are connected between the main oil return pipe 1 and the main oil return pipe 2. The filter 1 and the filter 2 are respectively connected to the main oil return pipe 1 and the main oil return pipe 2. The pulse oil pump is fixedly connected to the top of the auxiliary oil tank. The three-way pulse flushing oil supply pipe is connected between the pulse oil pump and the main oil return pipe 1 and the main oil return pipe 2. The three-way pulse flushing return oil pipe is connected between the auxiliary oil tank and the main oil return pipe 1 and the main oil return pipe 2.

[0005] Preferably, both ends of the first return oil branch pipe are equipped with solenoid valve A, both ends of the second return oil branch pipe are equipped with solenoid valve B, the three-way pulse flushing oil supply pipe is equipped with solenoid valve A1 and solenoid valve B1, and the three-way pulse flushing oil return pipe is equipped with solenoid valve A2 and solenoid valve B2.

[0006] Preferably, both filter one and filter two are composed of a housing, an end cap, a support rod, and a sintered metal filter element. The end cap is threaded to the bottom end of the housing, the support rod is threaded to the inside of the end cap and extends into the inside of the housing, and the sintered metal filter element is connected to the top of the support rod and fits against the inner wall of the housing.

[0007] Preferably, the bottom end of the housing is fixedly provided with a threaded head one that is threadedly connected to the end cover, a threaded hole is opened in the middle position inside the end cover, and the bottom end of the support rod is fixedly provided with a threaded head two that is connected to the threaded hole.

[0008] Preferably, the arc-shaped outer surface of the metal sintered filter element is provided with an O-ring.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] (1) In operation, by setting up a return oil combination pipeline consisting of return oil main pipe 1, return oil branch pipe 1, return oil branch pipe 2, return oil main pipe 2, filter 1, filter 2, auxiliary oil tank, pulse oil pump, three-way pulse flushing oil supply pipe and three-way pulse flushing return oil pipe, the hydraulic oil can be circulated, and the return oil branch pipe 2 and return oil main pipe 2 can be cleaned alternately to avoid blockage.

[0011] (2) By setting up filter one and filter two, which consist of a housing, end cap, support rod and metal sintered filter element, the return oil branch pipe two and the return oil main pipe two can be filtered respectively, so as to avoid impurities entering the circulation system and affecting the life of the oil-using equipment. By setting O-ring seals, the sealing performance of the contact position between the metal sintered filter element and the housing can be improved. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the circulation system structure for preventing blockage in hydraulic oil pipelines according to this utility model;

[0015] Figure 2 This is a schematic diagram of the oil return combined pipeline structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the filter of this utility model;

[0017] Figure 4 This is an exploded view of the filter of this utility model;

[0018] In the diagram: 1. Oil tank; 2. Oil supply pipe; 3. Oil return combination pipe; 4. Oil-using equipment; 5. Main oil return pipe 1; 6. Branch oil return pipe 1; 7. Branch oil return pipe 2; 8. Main oil return pipe 2; 9. Filter 1; 10. Filter 2; 11. Auxiliary oil tank; 12. Pulse oil pump; 13. Three-way pulse flushing oil supply pipe; 14. Three-way pulse flushing oil return pipe; 15. Housing; 16. End cap; 17. Support rod; 18. Sintered metal filter element; 19. Threaded head 1; 20. Threaded hole; 21. Threaded head 2; 22. O-ring seal. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Depend on Figures 1 to 4 This utility model discloses a circulation system for preventing blockage in hydraulic oil pipelines, comprising an oil tank 1, an oil supply pipe 2, and a return oil combination pipe 3. Both the oil supply pipe 2 and the return oil combination pipe 3 are connected between the oil tank 1 and the oil-using equipment 4. The return oil combination pipe 3 consists of a first return oil main pipe 5, a first return oil branch pipe 6, a second return oil branch pipe 7, a second return oil main pipe 8, a first filter 9, a second filter 10, an auxiliary oil tank 11, a pulse oil pump 12, a three-way pulse flushing oil supply pipe 13, and a three-way pulse flushing oil return pipe 14. One end of the first return oil main pipe 5 is connected to the oil-using equipment 4, and one end of the second return oil main pipe 8 is connected to the oil tank 1. The first return oil branch pipe 6 and the second return oil branch pipe 7 are both connected to the first return oil main pipe 5 and the second return oil main pipe 8. Between pipe 2 and 8, filter 1 and filter 2 are respectively connected to return oil branch pipe 1 and return oil branch pipe 2 and 7. Pulse oil pump 12 is fixedly connected to the top of auxiliary oil tank 11. Three-way pulse flushing oil supply pipe 13 is connected between pulse oil pump 12 and return oil branch pipe 1 and return oil branch pipe 2 and 7. Three-way pulse flushing oil return pipe 14 is connected between auxiliary oil tank 11 and return oil branch pipe 1 and return oil branch pipe 2 and 7. Solenoid valve A is installed at both ends of return oil branch pipe 1 and solenoid valve B is installed at both ends of return oil branch pipe 2. Solenoid valve A1 and solenoid valve B1 are installed on three-way pulse flushing oil supply pipe 13. Solenoid valve A2 and solenoid valve B2 are installed on three-way pulse flushing oil return pipe 14.

[0021] When the hydraulic oil circulates back through the return branch pipe 6, solenoid valve A is opened and solenoid valve B is closed. At this time, the hydraulic oil is filtered through filter 9, and impurities inside filter 10 can be cleaned, or pulse cleaning can be performed on the return branch pipe 7. When the hydraulic oil circulates back through the return branch pipe 7, solenoid valve B is opened and solenoid valve A is closed. At this time, the hydraulic oil is filtered through filter 10, and impurities inside filter 9 can be cleaned, or pulse cleaning can be performed on the return branch pipe 6.

[0022] When performing pulse cleaning on return branch pipe 6, open solenoid valves A1 and A2, and close solenoid valves B1 and B2, so that return branch pipe 6 is connected to the three-way pulse flushing supply pipe 13 and the three-way pulse flushing return pipe 14. The pulse oil pump 12 draws clean hydraulic oil from the auxiliary oil tank 11, thereby achieving pulse cleaning of return branch pipe 6. When performing pulse cleaning on return branch pipe 7, open solenoid valves B1 and B2, and close solenoid valves A1 and A2, so that return branch pipe 7 is connected to the three-way pulse flushing supply pipe 13 and the three-way pulse flushing return pipe 14. The pulse oil pump 12 draws clean hydraulic oil from the auxiliary oil tank 11, thereby achieving pulse cleaning of return branch pipe 7.

[0023] Both filter 1 (9) and filter 2 (10) are composed of a housing 15, an end cap 16, a support rod 17, and a sintered metal filter element 18. The end cap 16 is threaded to the bottom end of the housing 15, the support rod 17 is threaded to the inside of the end cap 16 and extends into the inside of the housing 15, and the sintered metal filter element 18 is connected to the top end of the support rod 17 and fits against the inner wall of the housing 15.

[0024] When filters 1 (9) and 2 (10) are working, hydraulic oil enters from the bottom of one side of housing 15 and moves upward along the inside of housing 15. At this time, it is filtered through the metal sintered filter element 18. The bottom-up filtration method can effectively prevent the metal sintered filter element 18 from becoming clogged. When the metal sintered filter element 18 becomes clogged, the end cover 16, support rod 17 and metal sintered filter element 18 can be disassembled, and then the metal sintered filter element 18 can be cleaned or replaced.

[0025] The bottom end of the housing 15 is fixedly provided with a threaded head 19 that is threaded to the end cover 16, and the end cover 16 is threaded to the end cover 16. A threaded hole 20 is provided in the middle of the interior of the end cover 16. The bottom end of the support rod 17 is fixedly provided with a threaded head 21 that is threaded to the threaded hole 20, which facilitates the installation and disassembly of the support rod 17.

[0026] The arc-shaped outer surface of the metal sintered filter element 18 is provided with an O-ring 22, which can improve the sealing performance of the metal sintered filter element 18 at the contact position with the inner wall of the housing 15.

[0027] In operation, by setting up a return oil combination pipeline consisting of return oil main pipe 1, return oil branch pipe 1, return oil branch pipe 2, return oil main pipe 2, filter 1, filter 2, auxiliary oil tank, pulse oil pump, three-way pulse flushing oil supply pipe and three-way pulse flushing return oil pipe, hydraulic oil circulation can be achieved. At the same time, return oil branch pipe 2 and return oil main pipe 2 can be alternately cleaned to avoid blockage. By setting up filter 1 and filter 2, which consist of a shell, end cap, support rod and metal sintered filter element, return oil branch pipe 2 and return oil main pipe 2 can be filtered respectively to prevent impurities from entering the circulation system and affecting the life of oil-using equipment. By setting up O-ring seals, the sealing performance of the contact position between the metal sintered filter element and the shell can be improved.

Claims

1. A hydraulic oil pipeline anti-blocking circulation system, comprising an oil tank (1), an oil supply pipe (2) and an oil return combined pipeline (3), characterized in that: The oil supply pipe (2) and the return oil combination pipe (3) are both connected between the oil tank (1) and the oil-using equipment (4). The return oil combination pipe (3) consists of a return oil main pipe (5), a return oil branch pipe (6), a return oil branch pipe (7), a return oil main pipe (8), a filter (9), a filter (10), an auxiliary oil tank (11), a pulse oil pump (12), a three-way pulse flushing oil supply pipe (13), and a three-way pulse flushing oil return pipe (14). One end of the return oil main pipe (5) is connected to the oil-using equipment (4), and one end of the return oil main pipe (8) is connected to the oil tank (1). Branch pipe 1 (6) and return oil branch pipe 2 (7) are both connected between return oil main pipe 1 (5) and return oil main pipe 2 (8). Filter 1 (9) and filter 2 (10) are respectively connected to return oil branch pipe 1 (6) and return oil branch pipe 2 (7). Pulse oil pump (12) is fixedly connected to the top of auxiliary oil tank (11). Three-way pulse flushing oil supply pipe (13) is connected between pulse oil pump (12) and return oil branch pipe 1 (6) and return oil branch pipe 2 (7). Three-way pulse flushing return oil pipe (14) is connected between auxiliary oil tank (11) and return oil branch pipe 1 (6) and return oil branch pipe 2 (7).

2. The hydraulic oil pipeline anti-blocking circulation system according to claim 1, characterized in that: Solenoid valve A is installed at both ends of the first return oil branch pipe (6), solenoid valve B is installed at both ends of the second return oil branch pipe (7), solenoid valve A1 and solenoid valve B1 are installed on the three-way pulse flushing oil supply pipe (13), and solenoid valve A2 and solenoid valve B2 are installed on the three-way pulse flushing oil return pipe (14).

3. The hydraulic oil pipeline anti-blocking circulation system according to claim 1, characterized in that: Both filter one (9) and filter two (10) are composed of a housing (15), an end cap (16), a support rod (17) and a metal sintered filter element (18). The end cap (16) is threaded to the bottom end of the housing (15), the support rod (17) is threaded to the inside of the end cap (16) and extends into the inside of the housing (15), and the metal sintered filter element (18) is connected to the top of the support rod (17) and fits against the inner wall of the housing (15).

4. The hydraulic oil pipeline anti-blocking circulation system according to claim 3, characterized in that: The bottom end of the housing (15) is fixedly provided with a threaded head (19) that is threaded to the end cover (16), and a threaded hole (20) is opened in the middle position inside the end cover (16). The bottom end of the support rod (17) is fixedly provided with a threaded head (21) that is threaded to the threaded hole (20).

5. The hydraulic oil pipeline anti-blocking circulation system according to claim 3, characterized in that: The arc-shaped outer surface of the metal sintered filter element (18) is provided with an O-ring (22).

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