Hydraulic oil station with hydraulic oil circulation and filtration function

Abstract

The present invention relates to the technical field of hydraulic equipment, and in particular to a hydraulic oil station with a hydraulic oil circulation and filtering function, comprising a shell, an oil inlet pump for hydraulic oil reflux is installed on one side of the top end of the outer wall of the shell, an oil discharge pump for conveying hydraulic oil and discharging is arranged on one side of the outer wall of the shell, and a filtering mechanism for circulating and filtering the hydraulic oil is arranged inside the shell, and the filtering mechanism includes a primary filtering component and a filter box. In the present invention, the hydraulic oil refluxed to the hydraulic station can be initially filtered by the first filter and the sedimentation box, and the device in the hydraulic oil can be filtered multiple times by the second main filter housing and the second auxiliary filter housing, thereby reducing the impurities entering the oil tank, and then the water contained in the hydraulic oil can be filtered multiple times by the cooperation of the conical oil-water separator, the waste liquid filter and the second fine filter, so as to avoid the water from gathering in the hydraulic oil.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment, and in particular to a hydraulic oil station with a hydraulic oil circulation and filtering function. Background Art

[0002] A hydraulic oil station, also known as a hydraulic pump station, power unit or oil station, is an independent hydraulic device. Its core function is to provide hydraulic power for the hydraulic system. It is a device that converts mechanical energy into hydraulic energy through a hydraulic pump. It cooperates with hydraulic components such as cylinders to achieve various set telescopic, lifting and other functions.

[0003] When the hydraulic oil flows in the hydraulic equipment, the sealing and environmental problems in the hydraulic equipment will often cause water and some solid impurities to be mixed in the hydraulic oil. When these impurities accumulate too much, they will damage the quality of the hydraulic oil and the hydraulic equipment. Therefore, the hydraulic oil needs to be filtered to remove the influence of impurities. However, most of the existing hydraulic oil stations only filter the hydraulic oil by setting a filter. The long-term use of the filter can easily affect its filtering effect, resulting in limited filtration. At the same time, filtering cannot remove the water mixed in the hydraulic oil. Therefore, the existing hydraulic oil station filtering mechanism still has certain shortcomings.

[0004] Therefore, it is necessary to invent a hydraulic oil station with hydraulic oil circulation and filtering function. Summary of the invention

[0005] To this end, the present invention provides a hydraulic oil station with a hydraulic oil circulation and filtering function to solve the problem that most of the existing hydraulic oil stations only filter the hydraulic oil by setting a filter, and the long-term use of the filter is likely to affect its filtering effect, resulting in limited filtration, and the filtering cannot remove the water mixed in the hydraulic oil.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a hydraulic oil station with a hydraulic oil circulation and filtering function, comprising a housing, an oil inlet pump for hydraulic oil reflux is installed on one side of the top end of the outer wall of the housing, an oil discharge pump for conveying hydraulic oil and discharging is arranged on one side of the outer wall of the housing, and a filtering mechanism for circulating and filtering the hydraulic oil is arranged inside the housing;

[0007] The filtering mechanism comprises a primary filtering component and a filtering box. The primary filtering component is arranged inside the oil inlet pump and is connected to the infusion end of the oil inlet pump. The inner wall of the filtering box is provided with a fine filtering component and an oil-water separation component.

[0008] Preferably, the primary filtering component includes a first filter, the top of which is connected to the infusion tube of the oil inlet pump, a filter paper tube is provided inside the first filter, the front and rear ends of the filter paper tube are sealed and fixed with sealing plates, an emergency confluence port is opened on the top of the upper sealing plate, a sealing plug is slidably connected to the inner wall of the emergency confluence port, and reset springs are fixed to the upper and lower ends of the plug.

[0009] Preferably, the primary filter component also includes a sedimentation box, which is fixed to the top of the inner wall of the shell and is located on the right side of the first filter. The bottom end of the first filter is connected to the left side of the inner wall of the sedimentation box through an oil pipeline. Sedimentation guide plates are obliquely fixed on both sides of the inner wall of the sedimentation box and located below the oil inlet. The sedimentation guide plates are inclined in a manner of being higher on the left and lower on the right, and a block is protruding and fixed on the right side of the top of the outer wall of the sedimentation guide plate.

[0010] Preferably, partitions are fixed at the centers of both sides of the inner wall of the filter box, the fine filter component and the oil-water separation component are respectively arranged on the upper and lower sides of the partition, the fine filter component includes a second main filter housing, and the second main filter housing is fixed to the top of the outer wall of the partition by an arc-shaped pipe clamp, and a second auxiliary filter housing is arranged on the right side of the outer wall of the second main filter housing.

[0011] Preferably, multiple second auxiliary filter housings are evenly arranged in a circular array, arc-shaped clamp seats are fixed on the outer wall of the second main filter housing and at positions corresponding to the inlet pipe, the outer walls of the second auxiliary filter housings are fixed to the arc-shaped clamp seats at corresponding positions, a diverter plate is arranged on the right side of the outer wall of the second main filter housing, the discharge end of the sedimentation tank is connected to the inner wall of the diverter plate on one side away from the second main filter housing through the oil pipeline and the inlet pipe, and the end of the diverter plate away from the inlet pipe is connected to the oil inlet port of the second auxiliary filter housing through the oil distribution pipe.

[0012] Preferably, filter cartridges b are connected on both sides of the inner wall of the second auxiliary filter housing, a sealing plate is fixed to the end of the filter cartridge b away from the second main filter housing, liquid holes are provided on the outer wall of the sealing plate and on the outer side of the filter cartridge b, a filter port b for filtering is provided on the outer wall of the filter cartridge b and on the side close to the sealing plate, and a filter paper layer for filtering the hydraulic oil is fixed to the inner wall of the filter port b.

[0013] Preferably, a filter cartridge a is fixed to the inner wall of the second main filter housing, the discharge port of the second auxiliary filter housing is connected to the inner wall side end of the filter cartridge a through a bend pipe, and a filter port a for filtering oil is provided at the left end of the filter cartridge a.

[0014] Preferably, the oil-water separation component includes a conical oil-water separator, which is fixed to the right side of the bottom end of the inner wall of the filter box by a bracket and is located below the partition, and the discharge port of the second main filter housing is connected to the top oil inlet port of the conical oil-water separator through an oil pipeline, and the oil pipeline of the second main filter housing extends to the bottom side of the inner wall of the conical oil-water separator, and the top discharge pipe port of the conical oil-water separator is connected to the second fine filter through a pipeline.

[0015] Preferably, filter cartridges d are installed on both sides of the inner wall of the second fine filter, a bottom filter groove is opened at the bottom end of the inner wall of the filter cartridge d, and a filter membrane for oil-water separation is fixed on the inner wall of the bottom filter groove. The discharge port of the filter cartridge d is connected to the oil tank through an oil pipeline, and the oil tank is installed on the right side of the bottom end of the inner wall of the shell, and the oil suction port of the oil discharge pump is connected to the oil tank through an oil suction pipe.

[0016] Preferably, the bottom waste discharge port of the conical oil-water separator is connected to a waste liquid filter through a pipeline, a filter cartridge c for separation is fixed to the inner wall of the waste liquid filter, a filter port c for filtering is opened on the outer wall of the filter cartridge c, the bottom end of the waste liquid filter is connected to a wastewater storage tank through a drain pipe, the bottom end of the second fine filter is connected to the liquid inlet port of the waste liquid filter through a reflux pipe, and the right side of the waste liquid filter is connected to a pipeline connected to the oil inlet port of the oil tank through an oil pump and an oil pipeline.

[0017] The beneficial effects of the present invention are:

[0018] In the present invention, the hydraulic oil returning to the hydraulic station can be initially filtered by the first filter and the sedimentation tank, and the devices in the hydraulic oil can be filtered multiple times again by the second main filter housing and the second auxiliary filter housing, thereby reducing the entry of impurities into the oil tank, and then the water contained in the hydraulic oil can be filtered multiple times by the cooperation of the conical oil-water separator, the waste liquid filter and the second fine filter, so as to avoid the accumulation of water in the hydraulic oil and affect the quality of the hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external structure of the present invention in the front view direction;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the present invention in the front view direction;

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the first filter in the present invention in the front view direction;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter paper cartridge in the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the sedimentation box in the front view direction of the present invention;

[0024] Figure 6 It is a schematic cross-sectional structure diagram of the second auxiliary filter housing in the present invention in the front view direction;

[0025] Figure 7 It is a partial three-dimensional structural schematic diagram of the filter cartridge b in the present invention;

[0026] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the second main filter housing in the front view direction of the present invention;

[0027] Fig. 9 It is a partial three-dimensional structural schematic diagram of the waste liquid filter in the present invention;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the second fine filter in the present invention when viewed from the side.

[0029] In the figure: 100, housing; 200, oil inlet pump; 300, first filter; 310, filter paper cartridge; 320, plugging; 321, spring; 400, sedimentation box; 410, sedimentation guide plate; 411, block; 500, filter box; 510, inlet pipe; 520, second main filter housing; 521, filter cartridge a; 522, filter port a; 530, diverter plate; 540, second auxiliary filter housing; 550, filter cartridge b; 551, filter port b; 552, liquid hole; 600, conical oil-water separator; 610, waste liquid filter; 611, filter cartridge c; 612, filter port c; 620, second fine filter; 621, filter cartridge d; 622, bottom filter tank; 630, wastewater storage tank; 700, oil tank; 710, oil discharge pump. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] See attached Figure 1-10The hydraulic oil station with hydraulic oil circulation and filtering function provided by the present invention comprises a shell 100, and an oil inlet pump 200 for hydraulic oil reflux is installed on one side of the top of the outer wall of the shell 100. The oil inlet pump 200 is provided to transport the external hydraulic oil back to the hydraulic oil station. An oil discharge pump 710 for transporting hydraulic oil discharge is provided on one side of the outer wall of the shell 100. The oil discharge pump 710 is provided to discharge the hydraulic oil in the hydraulic oil station. A filtering mechanism for circulating and filtering the hydraulic oil is provided inside the shell 100. The filtering mechanism comprises a primary filtering component and a filter box 500. The primary filtering component is arranged inside the oil inlet pump 200 and is connected to the infusion end of the oil inlet pump 200. The primary filtering component comprises The first filter 300 is included, and the top of the first filter 300 is connected to the infusion tube of the oil inlet pump 200. A filter paper cylinder 310 is arranged inside the first filter 300. The front and rear ends of the filter paper cylinder 310 are sealed and fixed with sealing plates. The sealing plates are arranged to block the upper and lower ends of the filter paper cylinder 310. An emergency confluence port is provided on the top of the upper sealing plate. The emergency reflux port is provided to allow the hydraulic oil to flow into the filter paper cylinder 310 when the filter paper cylinder 310 is blocked. The filter paper cylinder 310 is provided to filter the hydraulic oil for the first time to prevent impurities from entering the system. The inner wall of the emergency confluence port is slidably connected with a sealing plug 320. The upper end of the plug 320 A spring 321 for resetting is fixed at the lower end. The plugging seal 320 is provided to plug the emergency confluence under normal circumstances, and the spring 321 is provided to seal the emergency confluence by elastic force. The primary filtering component also includes a sedimentation box 400. The sedimentation box 400 is fixed to the top of the inner wall of the shell 100 and is located on the right side of the first filter 300. The bottom end of the first filter 300 is connected to the left side of the inner wall of the sedimentation box 400 through an oil pipeline. Sedimentation guide plates 410 are obliquely fixed on both sides of the inner wall of the sedimentation box 400 and are located below the oil inlet. The sedimentation guide plates 410 are obliquely arranged in a manner of being higher on the left and lower on the right. The outer surface of the sedimentation guide plates 410 A stopper 411 is protruding and fixed on the right side of the top of the wall. The hydraulic oil filtered by the filter paper cylinder 310 will be transported to the sedimentation box 400 through the oil pipeline, and some grooves can be opened on the top of the sedimentation guide plate 410. Since the sedimentation guide plate 410 is set obliquely, when the hydraulic oil flows on the sedimentation guide plate 410, the sediment inside will be collected on the sedimentation guide plate 410 to avoid entering the filter box 500. The sealing plate at the front end of the outer wall of the sedimentation box 400 can be disassembled to facilitate the subsequent cleaning of the sedimentation guide plate 410. The sedimentation guide plate 410 can be fixed in a detachable connection manner, and the stopper 411 also plays a role in blocking hydraulic oil impurities.

[0032] The inner wall of the filter box 500 is provided with a fine filter component and an oil-water separation component. A partition is fixed at the center of both sides of the inner wall of the filter box 500. The fine filter component and the oil-water separation component are respectively arranged on the upper and lower sides of the partition. The fine filter component includes a second main filter housing 520. The second main filter housing 520 is fixed to the top of the outer wall of the partition by an arc-shaped pipe clamp. A second auxiliary filter housing 540 is arranged on the right side of the outer wall of the second main filter housing 520. Multiple second auxiliary filter housings 540 are evenly arranged in a circular array. The second auxiliary filter housing 540 is set to perform diversion filtering on the hydraulic oil. The outer wall of the second main filter housing 520 and Arc-shaped clamp seats are fixed at positions corresponding to the inlet pipe 510, and the outer walls of the second auxiliary filter housing 540 are fixed to the arc-shaped clamp seats at the corresponding positions. The arc-shaped clamp seats are provided to annularly fix multiple second auxiliary filter housings 540 to the outer wall of the second main filter housing 520. A diverter plate 530 is provided on the right side of the outer wall of the second main filter housing 520. The discharge end of the sedimentation tank 400 is connected to the inner wall of the diverter plate 530 away from the second main filter housing 520 through the oil pipeline and the inlet pipe 510. The end of the diverter plate 530 away from the inlet pipe 510 is connected to the oil inlet port of the second auxiliary filter housing 540 through the oil distribution pipe. The diverter plate 530 is provided 0 is to store the hydraulic oil first in a centralized manner, and then transport the hydraulic oil to the second auxiliary filter housing 540 through the oil distribution pipe for separate filtration. The inner walls of the second auxiliary filter housing 540 are connected with filter cartridges b550 on both sides. A sealing plate is fixed to the end of the filter cartridge b550 away from the second main filter housing 520. Liquid holes 552 are provided on the outer wall of the sealing plate and on the outer side of the filter cartridge b550. Filter ports b551 are provided on the outer wall of the filter cartridge b550 and on the side close to the sealing plate. Filter paper layers for filtering the hydraulic oil are fixed on the inner walls of the filter ports b551. The hydraulic oil is transported to the filter cartridge b550 through the oil distribution pipe, and The filter cartridge b550 will filter the hydraulic oil for the second time through the filter port b551, and the filtered hydraulic oil will be discharged through the liquid hole 552. The inner wall of the second main filter housing 520 is fixed with a filter cartridge a521. The discharge port of the second auxiliary filter housing 540 is connected with the inner wall side end of the filter cartridge a521 through a bend pipe. The left end of the filter cartridge a521 is provided with a filter port a522 for filtering the oil. The filter cartridge a521 and the filter port a522 are provided for filtering the hydraulic oil for the third time to ensure that the outflowing hydraulic oil does not contain impurities. The filter port a522 is provided with a filter paper or a stainless steel filter screen for filtering the hydraulic oil.

[0033] The oil-water separation component includes a conical oil-water separator 600, which is fixed to the right side of the bottom end of the inner wall of the filter box 500 by a bracket and is located below the partition. The set conical oil-water separator 600 can separate oil and water by sedimentation. Because the weight of water is greater than the weight of hydraulic oil, the water will settle at the bottom of the conical oil-water separator 600. The discharge port of the second main filter housing 520 is connected to the top oil inlet port of the conical oil-water separator 600 through an oil pipeline. The oil pipeline of the second main filter housing 520 extends to the bottom side of the inner wall of the conical oil-water separator 600. The top discharge pipe of the conical oil-water separator 600 is connected to the top of the conical oil-water separator 600 through a pipe. The second fine filter 620 is connected to the hydraulic oil discharge channel, and the second fine filter 620 is provided for secondary oil-water separation of the discharged hydraulic oil. Filter cartridges d621 are installed on both sides of the inner wall of the second fine filter 620, and a bottom filter groove 622 is provided at the bottom end of the inner wall of the filter cartridge d621. The inner wall of the bottom filter groove 622 is fixed with a filter membrane for oil-water separation, and the filter membrane material can be a polytetrafluoroethylene membrane or an ultrafiltration membrane, which allows water to pass but oil cannot pass. Therefore, when the hydraulic oil flows in the filter cartridge d621, the water will fall into the interior of the second fine filter 620 through the bottom filter groove 622. The discharge port of the filter cartridge d621 is connected to the oil pump 610 through the oil pipeline. The oil tank 700 is installed on the right side of the bottom end of the inner wall of the shell 100, and the oil tank 700 will temporarily store the hydraulic oil. The suction port of the oil discharge pump 710 is connected with the oil tank 700 through the oil suction pipe. The bottom waste discharge port of the conical oil-water separator 600 is connected with the waste liquid filter 610 through a pipeline. The inner wall of the waste liquid filter 610 is fixed with a filter cartridge c611 for separation. The waste liquid filter 610 is set to filter the waste liquid discharged from the conical oil-water separator 600 to avoid excessive discharge of hydraulic oil. The outer wall of the filter cartridge c611 is provided with a filter port c612 for filtering, and a filter membrane is also fixed in the filter port c612. Therefore, the hydraulic oil When flowing in the filter cartridge c611, the moisture will be discharged into the waste liquid filter 610 through the filter port c612. The bottom end of the waste liquid filter 610 is connected to the wastewater storage tank 630 through a drain pipe, and the moisture will be discharged into the wastewater storage tank 630 through the drain pipe. A drain plate is bolted to the bottom end of the outer wall of the shell 100 and located at the bottom end of the wastewater storage tank 630. The bottom end of the second fine filter 620 is connected to the liquid inlet port of the waste liquid filter 610 through a reflux pipe. The right side of the waste liquid filter 610 is connected to the oil inlet port of the oil tank 700 through an oil pump and an oil pipeline. The waste liquid discharged from the second fine filter 620 will enter the waste liquid filter 610 for filtration.

[0034] The use process of the present invention is as follows: first, the oil inlet pump 200 will transport the used hydraulic oil to the first filter 300 through the infusion pipe, and the hydraulic oil will pass through the filter paper cylinder 310 from the outside, so that the filter paper cylinder 310 can filter the hydraulic oil, and the filtered hydraulic oil will enter the sedimentation box 400 through the oil pipeline and flow in the sedimentation guide plate 410, and the sediment in the hydraulic oil will precipitate on the sedimentation guide plate 410, and the precipitated hydraulic oil will enter the second auxiliary filter housing 540 through the oil pipeline and the inlet pipe 510, and the second auxiliary filter housing 540 will pass through the filter cartridge The filter paper on b550 and the filter port b551 filters the hydraulic oil, and the filtered hydraulic oil enters the filter cartridge a521 in the second main filter housing 520 through the elbow, and the filter cartridge a521 filters the hydraulic oil again through the filter paper on the filter port a522. The filtered hydraulic oil is collected at the side end of the second main filter housing 520 and enters the bottom end of the conical oil-water separator 600 through the oil pipeline, and the conical oil-water separator 600 separates the hydraulic oil from water, and the hydraulic oil at the top of the conical oil-water separator 600 enters the second fine filter 620 through the oil pipeline. During the flow, the oil and water are separated by the filter membrane in the bottom filter tank 622. The separated hydraulic oil will enter the oil tank 700 for temporary storage, and the discharged waste liquid will enter the waste liquid filter 610 through the reflux pipe. The waste liquid discharged from the conical oil-water separator 600 will also be transported to the waste liquid filter 610 through the pipeline. The waste liquid filter 610 can be filtered again through the filter cylinder c611 and the filter membrane in the filter port c612. The filtered waste water will enter the waste water storage tank 630, and the filtered hydraulic oil will be transported to the oil tank 700 through the oil pump.

[0035] At the same time, the first filter 300, the sedimentation box 400, the second main filter housing 520, the second auxiliary filter housing 540, the waste liquid filter 610 and the second fine filter 620 can all be disassembled and removed, so as to facilitate personnel to remove the filter paper and filter membrane or replace the equipment to ensure the filtering effect of the hydraulic oil, and the specific connection method can be flange connection or bolt connection.

[0036] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A hydraulic oil station with a hydraulic oil circulation and filtering function, comprising a housing (100), an oil inlet pump (200) for hydraulic oil reflux installed on one side of the top end of the outer wall of the housing (100), and an oil discharge pump (710) for conveying hydraulic oil and discharging the hydraulic oil is arranged on one side of the outer wall of the housing (100), characterized in that: A filtering mechanism for circulating and filtering hydraulic oil is arranged inside the housing (100); The filtering mechanism comprises a primary filtering component and a filtering box (500); the primary filtering component is arranged inside the oil feed pump (200) and is connected to the infusion end of the oil feed pump (200); and the inner wall of the filtering box (500) is provided with a fine filtering component and an oil-water separation component; The primary filtering component comprises a first filter (300), the top of the first filter (300) is connected to the infusion pipe of the oil feed pump (200), a filter paper cartridge (310) is arranged inside the first filter (300), the front and rear ends of the filter paper cartridge (310) are both sealed and fixed with sealing plates, the top of the upper sealing plate is provided with an emergency confluence port, the inner wall of the emergency confluence port is slidably connected with a sealing plug (320), and the upper and lower ends of the plug (320) are both fixed with reset springs (321); The primary filtering component further comprises a sedimentation box (400), the sedimentation box (400) being fixed to the top of the inner wall of the housing (100) and being located on the right side of the first filter (300); the bottom end of the first filter (300) being connected to the left side of the inner wall of the sedimentation box (400) through an oil pipeline; sedimentation guide plates (410) being obliquely fixed on both sides of the inner wall of the sedimentation box (400) and located below the oil inlet; the sedimentation guide plates (410) being obliquely arranged in a manner of being higher on the left and lower on the right; and a stopper (411) being protrudingly fixed on the right side of the top of the outer wall of the sedimentation guide plate (410); A partition is fixed at the center of both sides of the inner wall of the filter box (500), the fine filter component and the oil-water separation component are respectively arranged on the upper and lower sides of the partition, the fine filter component comprises a second main filter housing (520), the second main filter housing (520) is fixed to the top of the outer wall of the partition by an arc-shaped pipe clamp, and a second auxiliary filter housing (540) is arranged on the right side of the outer wall of the second main filter housing (520); A plurality of second auxiliary filter housings (540) are uniformly arranged in a circular array; arc-shaped clamp seats are fixed to the outer wall of the second main filter housing (520) and at positions corresponding to the inlet pipe (510); the outer wall of the second auxiliary filter housing (540) is fixed to the arc-shaped clamp seats at corresponding positions; a diverter plate (530) is provided on the right side of the outer wall of the second main filter housing (520); the discharge end of the sedimentation tank (400) is connected to the inner wall of the diverter plate (530) away from the second main filter housing (520) through an oil pipeline and the inlet pipe (510); and one end of the diverter plate (530) away from the inlet pipe (510) is connected to the oil inlet port of the second auxiliary filter housing (540) through an oil distribution pipe; Both sides of the inner wall of the second auxiliary filter housing (540) are connected to filter cartridges b (550); a sealing plate is fixed to one end of the filter cartridge b (550) away from the second main filter housing (520); a liquid through hole (552) is provided on the outer wall of the sealing plate and located outside the filter cartridge b (550); a filter port b (551) for filtering is provided on the outer wall of the filter cartridge b (550) and on one side close to the sealing plate; a filter paper layer for filtering hydraulic oil is fixed to the inner wall of the filter port b (551); A filter cartridge a (521) is fixed to the inner wall of the second main filter housing (520); a discharge port of the second auxiliary filter housing (540) is connected to the inner wall side end of the filter cartridge a (521) via a bend pipe; a filter port a (522) for filtering oil is provided at the left end of the filter cartridge a (521).

2. The hydraulic oil station with hydraulic oil circulation and filtering function according to claim 1 is characterized in that: The oil-water separation component comprises a conical oil-water separator (600), which is fixed to the right side of the bottom end of the inner wall of the filter box (500) via a bracket and is located below the partition plate; the discharge port of the second main filter housing (520) is connected to the top oil inlet port of the conical oil-water separator (600) via an oil pipeline; the oil pipeline of the second main filter housing (520) extends to the bottom side of the inner wall of the conical oil-water separator (600); and the top discharge pipe opening of the conical oil-water separator (600) is connected to the second fine filter (620) via a pipeline.

3. The hydraulic oil station with hydraulic oil circulation and filtering function according to claim 2 is characterized in that: Filter cartridges d (621) are installed on both sides of the inner wall of the second fine filter (620); a bottom filter groove (622) is provided at the bottom end of the inner wall of the filter cartridge d (621); a filter membrane for oil-water separation is fixed to the inner wall of the bottom filter groove (622); a liquid discharge port of the filter cartridge d (621) is connected to an oil tank (700) via an oil delivery pipeline; the oil tank (700) is installed on the right side of the bottom end of the inner wall of the housing (100); and an oil suction port of the oil discharge pump (710) is connected to the oil tank (700) via an oil suction pipe.

4. The hydraulic oil station with hydraulic oil circulation and filtering function according to claim 3 is characterized in that: The bottom waste discharge port of the conical oil-water separator (600) is connected to a waste liquid filter (610) via a pipeline; a filter cartridge c (611) for separation is fixed to the inner wall of the waste liquid filter (610); a filter port c (612) for filtering is provided on the outer wall of each filter cartridge c (611); the bottom end of the waste liquid filter (610) is connected to a waste water storage tank (630) via a drainage pipe; the bottom end of the second fine filter (620) is connected to the liquid inlet port of the waste liquid filter (610) via a reflux pipeline; and the right side of the waste liquid filter (610) is connected to a pipeline connected to the oil inlet port of the oil tank (700) via an oil pump and an oil delivery pipeline.

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