A multi-stage filtering hydraulic oil purifier for hydraulic station

Abstract

The utility model discloses a multistage filtering hydraulic oil purification device for hydraulic station, including filter box, two -stage oil tank, magnetic filter mechanism, coarse filter screen, composite filter material and ultrafiltration membrane, the side outer wall on filter box is provided with the sealed door, and the outer wall of sealed door is fixedly connected with the hinge, and the hinge fixedly connected in the side outer wall of filter box, the upper surface fixedly connected with upper stand of filter box, the utility model discloses having modularization design, and the device passes through four -stage progressive type filtering structure integrated two -stage state detection function, realized the hydraulic oil purification efficiency and the operation reliability's synergic promotion, and the directional adsorption of ferromagnetic impurity is realized through high -strength magnetic field gradient to first -stage magnetic filter mechanism, can high -efficiently intercept the metal particulate matter such as iron filings, iron powder in oil, reduces the abrasion of hard impurity to subsequent filtering component from the source, and the coarse filter screen, composite filter material and ultrafiltration membrane that set up from top to bottom in filter box form gradient filtration system.

Description

Technical Field

[0001] This utility model relates to the field of purification device technology, and in particular to a multi-stage filtration hydraulic oil purification device for hydraulic stations. Background Technology

[0002] During the operation of a hydraulic power station, hydraulic oil, as the medium for energy transmission, directly affects the working stability and service life of the hydraulic system. During circulation, hydraulic oil easily mixes with various contaminants, including ferromagnetic impurities such as iron filings and iron powder generated by mechanical wear, as well as non-magnetic impurities such as dust, colloids, and moisture. However, existing filtration devices have many shortcomings. Firstly, they lack targeted treatment of magnetic impurities and have low integration of the filtration structure. In terms of filtration structure, most existing devices do not treat ferromagnetic impurity filtration as an independent primary filtration unit, but only mix a small number of magnetic elements into the filtration system, leading to… The adsorption effect of iron is poor, and a large amount of iron filings enter the subsequent filtration stage with the oil. This not only aggravates the wear of the filter screen, but also easily causes filter screen blockage, affecting the overall filtration efficiency. At the same time, the existing filtration structure is often set up in a disordered manner, which cannot form a progressive filtration effect, thus limiting the improvement of filtration accuracy and making it difficult to meet the high standard requirements of hydraulic system for oil cleanliness. Secondly, traditional devices rely heavily on terminal sampling and testing, which has a lag and cannot distinguish whether the blockage is in the primary filtration or the deep filtration stage. This leads to the need to replace the entire filter media during maintenance, resulting in large-scale waste of filter media. In addition, frequent downtime for maintenance significantly reduces the production line's uptime. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage filtration hydraulic oil purification device for hydraulic stations to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-stage filtration hydraulic oil purification device for a hydraulic station, including a filter box, a sealing door is provided on one outer wall of the filter box, a hinge is fixedly connected to the outer wall of the sealing door, and the hinge is fixedly connected to one outer wall of the filter box, an upper frame is fixedly connected to the upper surface of the filter box, a support column is fixedly connected to the bottom of the upper frame, an output connector is provided on one outer wall of the filter box, and an oil suction pipe is sleeved inside the output connector, and an input connector is provided on one outer surface of the filter box.

[0005] As a further technical solution of this utility model, a plunger pump and a gear pump are provided on the upper surface of the upper frame. A main pipe is sleeved on the plunger pump, and a secondary oil tank is sleeved at the end of the main pipe. One end of the main pipe is sleeved on the output end of the gear pump. An oil suction pipe is sleeved on the input end of the plunger pump, and one end of the oil suction pipe is sleeved on the input end of the gear pump.

[0006] As a further technical solution of this utility model, a secondary differential pressure sensor and a primary differential pressure sensor are respectively provided on the output connector and the input connector. An output probe and an input probe are respectively provided on both sides of the primary differential pressure sensor, and the output probe is fixedly connected to the input connector.

[0007] As a further technical solution of this utility model, a fixed frame is provided on the upper surface of the upper frame, and a primary oil tank is provided inside the fixed frame. An oil delivery pipe is sleeved on the output end of the primary oil tank, and a magnetic filter mechanism is provided on the output end of the oil delivery pipe.

[0008] As a further technical solution of this utility model, the magnetic filtration mechanism is composed of a filter tank, a connecting joint, a detection hole, an output pipe, a positioning hole, a hollow tank, a fixing pin, an internal thread, a magnetic rod, a sealing cover, and an external thread. The outer wall of the filter tank is provided with a connecting joint and a detection hole. An oil supply pipe is sleeved inside the connecting joint. An output pipe is provided on the outer wall of the filter tank. One end of the output pipe is fixedly connected to an input joint.

[0009] As a further technical solution of this utility model, a positioning hole is provided on the outer surface of one end of the filter can, a hollow can is provided inside the filter can, a fixing pin is provided on the hollow can and the fixing pin is engaged in the positioning hole, an internal thread is provided on the inner wall of one end of the hollow can, a magnetic rod is provided inside the hollow can, a sealing cover is fixedly connected to the magnetic rod, and an external thread is provided on the sealing cover and the external thread is threaded to the internal thread.

[0010] As a further technical solution of this utility model, the filter box is provided with a coarse filter screen, a composite filter material and an ultrafiltration membrane in sequence from top to bottom.

[0011] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model adopts a modular design. The device integrates dual-stage status detection function through a four-stage progressive filtration structure, realizing a synergistic improvement in hydraulic oil purification efficiency and operational reliability. The first-stage magnetic filtration mechanism achieves directional adsorption of ferromagnetic impurities through a high-intensity magnetic field gradient, which can efficiently intercept metal particles such as iron filings and iron powder in the oil, reducing the wear of hard impurities on subsequent filtration components from the source. The coarse filter screen, composite filter material, and ultrafiltration membrane arranged from top to bottom in the filter box form a gradient filtration system, with the pore size gradually decreasing from hundreds of micrometers to below the micrometer level. Through layered interception, it achieves deep purification of non-magnetic particles, colloids, and micro-pollutants. To meet the oil requirements of high-precision hydraulic systems and effectively reduce the risk of valve sticking and cylinder wear caused by oil contamination, the first-stage differential pressure sensor monitors the pressure difference between the inlet and outlet of the magnetic filter mechanism in real time. It can quantify the amount of ferromagnetic impurities adhering to the surface of the magnetic rod. When the difference exceeds the preset threshold, it will prompt cleaning and maintenance to avoid flow attenuation caused by magnetic rod blockage. The second-stage differential pressure sensor is deployed at the outlet of the filter box. By monitoring the overall pressure loss of the filter box, it accurately assesses the comprehensive blockage degree of the coarse filter screen, composite filter media and ultrafiltration membrane, and realizes synchronous status monitoring of the three-stage filter media. The dual differential pressure monitoring mechanism can realize predictive maintenance of the filtration system, reduce unplanned downtime and extend the service life of the filter media. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a three-dimensional structural diagram of the magnetic filtering mechanism of this utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of the filter box of this utility model.

[0017] In the diagram: 1. Filter box; 2. Hinge; 3. Sealed door; 4. Upper frame; 5. Support column; 6. Plunger pump; 7. Gear pump; 8. Main pipeline; 9. Secondary oil tank; 10. Suction pipe; 11. Output connector; 12. Secondary differential pressure sensor; 13. Input connector; 14. Primary differential pressure sensor; 15. Output probe; 16. Input probe; 17. Fixing frame; 18. Primary oil tank; 19. Oil delivery pipe; 20. Magnetic filtration mechanism; 201. Filter canister; 202. Connecting connector; 203. Detection hole; 204. Output pipe; 205. Positioning hole; 206. Hollow tank; 207. Fixing pin; 208. Internal thread; 209. Magnetic rod; 2010. Sealing cap; 2011. External thread; 21. Coarse filter screen; 22. Composite filter media; 23. Ultrafiltration membrane. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see the appendix Figure 1 - Appendix Figure 4This utility model provides an embodiment of a multi-stage filtration hydraulic oil purification device for a hydraulic station, comprising a filter box 1, a sealing door 3 on one outer wall of the filter box 1, a hinge 2 fixedly connected to the outer wall of the sealing door 3, and the hinge 2 fixedly connected to one outer wall of the filter box 1, an upper frame 4 fixedly connected to the upper surface of the filter box 1, a support column 5 fixedly connected to the bottom of the upper frame 4, an output connector 11 on one outer wall of the filter box 1, and an oil suction pipe 10 sleeved inside the output connector 11, and an input connector 13 on one outer surface of the filter box 1; a plunger pump 6 and a gear pump 7 are arranged on the upper surface of the upper frame 4. A main pipe 8 is fitted onto the plunger pump 6, and a secondary oil tank 9 is fitted onto the end of the main pipe 8. One end of the main pipe 8 is fitted onto the output end of the gear pump 7. An oil suction pipe 10 is fitted onto the input end of the plunger pump 6, and one end of the oil suction pipe 10 is fitted onto the input end of the gear pump 7, thus improving the reliability and economy of the lifting device. A secondary differential pressure sensor 12 and a primary differential pressure sensor 14 are respectively installed on the output connector 11 and the input connector 13. An output probe 15 and an input probe 16 are respectively installed on both sides of the primary differential pressure sensor 14, and the output probe 15 is fixedly connected to the input connector 13. The dual-stage monitoring forms a redundant protection mechanism. When a sensor at one level fails, another level can still provide critical data, preventing equipment damage due to monitoring failure. A mounting bracket 17 is installed on the upper surface of the upper frame 4, and a primary oil tank 18 is installed inside the mounting bracket 17. An oil delivery pipe 19 is connected to the output end of the primary oil tank 18, and a magnetic filter mechanism 20 is installed at the output end of the oil delivery pipe 19. This mechanism specifically removes ferromagnetic impurities, protects the subsequent filtration system, and improves overall purification efficiency. The magnetic filter mechanism 20 consists of a filter tank 201, a connecting joint 202, a detection hole 203, an output pipe 204, a positioning hole 205, a hollow tank 206, a fixing pin 207, and an internal thread 206. 08. The filter tank 201 is composed of a magnetic rod 209, a sealing cap 2010, and an external thread 2011. A connecting joint 202 and a detection hole 203 are provided on the outer wall of the filter tank 201. An oil supply pipe 19 is sleeved inside the connecting joint 202. An output pipe 204 is provided on the outer wall of the filter tank 201. One end of the output pipe 204 is fixedly connected to an input joint 13. When the first-stage differential pressure sensor 14 detects that the magnetic filter mechanism 20 has a differential pressure exceeding the standard due to the adsorption saturation of ferromagnetic impurities, the operator can quickly remove the magnetic filter mechanism 20 from the device and thoroughly clean the iron filings and other impurities attached to the surface of the magnetic rod 209 or directly replace the magnetic rod 209.A positioning hole 205 is provided on the outer surface of one end of the filter tank 201. A hollow tank 206 is provided inside the filter tank 201. A fixing pin 207 is provided on the hollow tank 206 and is engaged with the positioning hole 205. An internal thread 208 is provided on the inner wall of one end of the hollow tank 206. A magnetic rod 209 is provided inside the hollow tank 206. A sealing cover 2010 is fixedly connected to the magnetic rod 209. An external thread 2011 is provided on the sealing cover 2010 and the external thread 2011 is screwed. The threaded connection is attached to the internal thread 208. The detachable design significantly shortens maintenance time, reduces interference with the normal operation of the hydraulic station, and minimizes losses from unplanned downtime. Inside the filter box 1, from top to bottom, a coarse filter screen 21, a composite filter media 22, and an ultrafiltration membrane 23 are arranged sequentially. These three components form a three-stage filtration structure, playing a crucial role in progressively deepening purification and ensuring the cleanliness of the hydraulic oil.

[0020] Working principle: Using this utility model, firstly, the plunger pump 6 and gear pump 7 are fixedly connected to the upper frame 4. A support column 5 is set at the bottom of the upper frame 4. A sealing door 3 is set on one side outer wall of the filter box 1. A hinge 2 is fixedly connected to the outer wall of the sealing door 3 and is fixedly connected to one side outer wall of the filter box 1. The main pipeline 8 is sleeved on the plunger pump 6 and the output end of the gear pump 7. The secondary oil tank 9 is set at the end of the main pipeline 8. Then, the two ends of the suction pipe 10 sleeved in the output connector 11 are respectively sleeved on the plunger pump. The input ends of pump 6 and gear pump 7 are equipped with a secondary differential pressure sensor 12 and a primary differential pressure sensor 14 on the output connector 11 and input connector 13, respectively. The output probe 15 and input probe 16 on both sides of the primary differential pressure sensor 14 are fixedly connected to the input connector 13 and the detection hole 203, respectively. The primary oil tank 18 is snapped into the fixing frame 17. An oil delivery pipe 19 is sleeved on the output end of the primary oil tank 18, and a magnetic filter mechanism 20 is provided at the output end of the oil delivery pipe 19. Filter box 201 consists of a filter canister 201, a connecting joint 202, a detection hole 203, an output pipe 204, a positioning hole 205, a hollow canister 206, a fixing pin 207, an internal thread 208, a magnetic rod 209, a sealing cap 2010, and an external thread 2011. The hollow canister 206 is secured inside the filter canister 201 by the fixing pin 207, and the magnetic rod 209 is threaded into the hollow canister 206. Inside the filter box 1, from top to bottom, a coarse filter screen 21, a composite filter media 22, and an ultrafiltration membrane 23 are arranged sequentially, forming a progressively increasing level of precision. The filtration system consists of a coarse filter 21 that can initially intercept larger particles of impurities, such as dust clumps and fiber fragments mixed in the hydraulic oil, reducing the burden on subsequent fine filtration. The composite filter material 22 further filters out medium-sized impurities and some colloidal substances. Its special material structure and combination method give it good dirt-holding capacity and filtration efficiency. The ultrafiltration membrane 23, as the last line of defense, can effectively filter out tiny particles, bacteria, and some impurities dissolved in the oil, raising the cleanliness of the hydraulic oil to an extremely high level.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0023] 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 this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-stage filtration hydraulic oil purification device for a hydraulic power station, comprising a filter box (1), characterized in that: A sealing door (3) is provided on one side of the outer wall of the filter box (1). A hinge (2) is fixedly connected to the outer wall of the sealing door (3), and the hinge (2) is fixedly connected to one side of the outer wall of the filter box (1). An upper frame (4) is fixedly connected to the upper surface of the filter box (1), and a support column (5) is fixedly connected to the bottom of the upper frame (4). An output connector (11) is provided on one side of the outer wall of the filter box (1), and an oil suction pipe (10) is sleeved inside the output connector (11). An input connector (13) is provided on one side of the outer surface of the filter box (1). A fixing frame (17) is provided on the upper surface of the upper frame (4), and a primary oil tank (18) is provided inside the fixing frame (17). An oil delivery pipe (10) is sleeved at the output end of the primary oil tank (18). 9) A magnetic filter mechanism (20) is provided at the output end of the oil pipeline (19). The magnetic filter mechanism (20) consists of a filter tank (201), a connecting joint (202), a detection hole (203), an output pipe (204), a positioning hole (205), a hollow tank (206), a fixing pin (207), an internal thread (208), a magnetic rod (209), a sealing cap (2010), and an external thread (2011). A connecting joint (202) and a detection hole (203) are provided on the outer wall of the filter tank (201). The oil pipeline (19) is sleeved inside the connecting joint (202). An output pipe (204) is provided on the outer wall of the filter tank (201). An input joint (13) is fixedly connected to one end of the output pipe (204).

2. The multi-stage filtration hydraulic oil purification device for a hydraulic station according to claim 1, characterized in that: A plunger pump (6) and a gear pump (7) are provided on the upper surface of the upper frame (4). A main pipe (8) is sleeved on the plunger pump (6). A secondary oil tank (9) is sleeved at the end of the main pipe (8). One end of the main pipe (8) is sleeved at the output end of the gear pump (7). An oil suction pipe (10) is sleeved at the input end of the plunger pump (6). One end of the oil suction pipe (10) is sleeved at the input end of the gear pump (7).

3. The multi-stage filtration hydraulic oil purification device for a hydraulic station according to claim 1, characterized in that: The output connector (11) and the input connector (13) are respectively provided with a secondary differential pressure sensor (12) and a primary differential pressure sensor (14). The primary differential pressure sensor (14) is provided with an output probe (15) and an input probe (16) on both sides, and the output probe (15) is fixedly connected to the input connector (13).

4. The multi-stage filtration hydraulic oil purification device for a hydraulic station according to claim 2, characterized in that: A positioning hole (205) is provided on the outer surface of one end of the filter tank (201). A hollow tank (206) is provided inside the filter tank (201). A fixing pin (207) is provided on the hollow tank (206), and the fixing pin (207) is engaged in the positioning hole (205). An internal thread (208) is provided on the inner wall of one end of the hollow tank (206). A magnetic rod (209) is provided inside the hollow tank (206). A sealing cap (2010) is fixedly connected to the magnetic rod (209). An external thread (2011) is provided on the sealing cap (2010), and the external thread (2011) is threaded to the internal thread (208).

5. A multi-stage filtration hydraulic oil purification device for a hydraulic station according to claim 4, characterized in that: The filter box (1) is provided with a coarse filter screen (21), a composite filter material (22) and an ultrafiltration membrane (23) arranged from top to bottom.

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