Hydraulic oil filtering device for hydraulic equipment

Abstract

The invention discloses a hydraulic oil filtering device for hydraulic equipment, and relates to the technical field of hydraulic equipment, the hydraulic oil filtering device comprises a filtering shell, the filtering shell is of a hollow cylinder structure with an open bottom end and a blocked top end, the bottom end of the filtering shell is detachably connected with a bottom cover for blocking the filtering shell, and the top surface of the filtering shell is provided with an oil inlet pipe and an oil outlet pipe capable of axially sliding along the filtering shell; the number of the filter plates is at least two, and the two filter plates are mounted in the filter shell at an interval; and the inner filter shell vertically extends downwards along the inner top wall of the filter shell. According to the multi-stage filtering hydraulic machine, the multi-stage filtering design is adopted, various impurities in hydraulic oil can be effectively removed, large-particle impurities or small-particle impurities can be fully intercepted, the impurity removing capacity is improved, it is ensured that the filtered hydraulic oil has higher cleanliness, and therefore abrasion caused by the impurities to all parts of the hydraulic machine is reduced, and the service life of the hydraulic machine is prolonged. Working precision and reliability of the hydraulic machine are improved, and service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment, in particular to a hydraulic oil filtering device for hydraulic equipment. Background Art

[0002] A hydraulic press is a machine that uses liquid as the working medium and is made according to Pascal's principle to transfer energy to achieve various processes. A hydraulic press is generally composed of three parts: the machine (host), the power system, and the hydraulic control system. Hydraulic presses are classified into valve hydraulic presses, liquid hydraulic presses, and engineering hydraulic presses. A hydraulic press is a machine that uses liquid static pressure to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing processes and pressing forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet metal drawing, powder metallurgy, press fitting, etc.

[0003] Depending on the different use environments of the hydraulic press, during the use of the hydraulic press, external dust and impurities or metal particles caused by wear inside the hydraulic press will enter the hydraulic press along with the hydraulic oil, causing wear to the hydraulic press and shortening the service life of the hydraulic press. In order to reduce the impact of these problems, the hydraulic press is generally equipped with a hydraulic oil filter.

[0004] However, hydraulic presses face the problem of hydraulic oil contamination during use. At present, hydraulic presses are usually equipped with hydraulic oil filters to remove impurities mixed in the hydraulic oil. However, existing filters have many disadvantages. First of all, most of these filters are only single-time filtration, with limited ability to remove impurities and poor filtering effect. Single-time filtration is difficult to deal with complex impurity types and high impurity content, so that the filtered hydraulic oil may still contain a certain amount of impurities such as tiny particles. These impurities will circulate in the hydraulic press system with the hydraulic oil, causing wear on various components of the hydraulic press, reducing the working accuracy and reliability of the hydraulic press, and shortening its service life.

[0005] Secondly, during the filtering process, the hydraulic oil is in a stable flow state. This stable flow mode results in a relatively single contact between the hydraulic oil and the filter, and the filter's interception effect is poor. The stable flow of hydraulic oil is easy to form a fixed flow path in a specific area, so that part of the filter area is not fully utilized, and impurities are easy to accumulate in specific locations, further reducing the filtering efficiency.

[0006] In view of this, this application is hereby filed. Summary of the invention

[0007] The object of the present invention is to provide a hydraulic oil filter device for hydraulic equipment to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides a hydraulic oil filter device for hydraulic equipment, comprising: The filter housing is a hollow cylinder structure with an open bottom and a blocked top. The bottom end is detachably connected to a bottom cover for blocking the filter housing, and the top surface is provided with an oil inlet pipe and an oil outlet pipe that can slide along the axial direction of the filter housing. At least two filter plates are provided, and the two filter plates are installed inside the filter housing at intervals; The inner filter housing vertically extends downward along the inner top wall of the filter housing, and an oil delivery pipe communicating with the inner cavity of the filter housing is arranged at its bottom end, a fixed pipe extending along its axial direction is arranged inside the inner filter housing, the oil outlet pipe is slidably connected inside the fixed pipe, a first oil hole is arranged on the side wall of the fixed pipe, and a second oil hole overlapping with the first oil hole is arranged on the side wall of the oil outlet pipe; The filter element is sleeved on the outside of the fixed tube, and a positioning ring is connected to the bottom end of the filter element. The filter element is fixed to the inner wall of the inner filter shell through the positioning ring.

[0009] Furthermore, the filter plate comprises The annular filter part is in a disc structure, and filter holes are distributed on it. An inner cutout is integrally formed at the center of the annular filter part, and the inner wall of the inner cutout is fixed to the outer wall of the inner filter housing; A through groove is provided on the annular filter portion and has a swinging member disposed therein; The spoiler is arranged inside the through slot through a swinging member, and a filter cloth is connected to the outer wall of the spoiler. One end of the filter cloth away from the spoiler is connected to the outer wall of the opening of the through slot.

[0010] Furthermore, a plurality of through grooves are provided, and the plurality of through grooves are distributed in a circular array on the annular filter portion, and a spoiler is provided inside each of the through grooves.

[0011] Furthermore, the swing member includes A rotating rod is horizontally rotatably mounted inside the through slot, and the spoiler is fixedly connected to the rotating rod, and the spoiler can swing clockwise or counterclockwise around the axis of the rotating rod; The mainspring is in a spiral structure as a whole and is sleeved on the outer wall of the rotating rod. One end of the mainspring is fixedly connected to the outer wall of the through slot, and the other end of the mainspring is fixedly connected to the outer wall of the rotating rod.

[0012] Furthermore, a steel wire rope is fixedly connected to the outer wall of the spoiler, and one end of the steel wire rope away from the filter plate is fixed to the outer wall of the oil outlet pipe. The bottom end of the inner filter shell is provided with a driving component for driving the oil outlet pipe to slide back and forth along the inner wall of the fixed pipe. When the driving component drives the oil outlet pipe to slide back and forth along the fixed pipe, the steel wire rope can drive the spoiler to rotate.

[0013] Furthermore, the drive assembly comprises A rotating shaft is rotatably connected to the interior of the fixed tube and is arranged along the axial direction of the fixed tube; The impeller is arranged at the bottom end of the rotating shaft and can rotate along with the flow of the hydraulic oil; The cylindrical barrel is arranged at the top of the oil delivery pipe and can rotate around the axis of the rotating shaft, and a spiral groove is arranged on the outer wall of the cylindrical barrel; The connecting rod is vertically arranged along the axis of the fixed pipe, the top end of which is rotatably connected to the bottom end of the oil outlet pipe, and the bottom end is connected with a follower pin which is inserted into the interior of the spiral groove.

[0014] Furthermore, guide pulleys for guiding the steel wire rope are provided inside and outside the filter housing, and the steel wire rope is slidably connected to the guide pulleys.

[0015] Furthermore, a mounting frame is arranged inside the fixing tube, a bearing is arranged on the mounting frame, and the rotating shaft is inserted into the inner ring of the bearing.

[0016] Furthermore, the oil inlet pipe extends vertically upward from the top surface of the filter housing, and a plurality of the oil inlet pipes are provided, and a one-way valve is provided inside each of the oil inlet pipes.

[0017] Furthermore, the bottom cover is a hollow truncated cone structure, the bottom cover is threadedly connected to the bottom of the filter housing, the inner wall of the bottom end port of the filter housing is provided with an internal thread, and the outer wall of the top end port of the bottom cover is provided with an external thread matching therewith.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the filter housing is a hollow cylinder structure with an open bottom and a blocked top, which is convenient for installing internal components. The bottom cover can be detachably connected to the bottom for blocking, which is convenient for later cleaning and maintenance. An oil inlet pipe is arranged on the top surface for inputting hydraulic oil, and the oil outlet pipe can slide along the axial direction of the filter housing to cooperate with subsequent filtering operations. The filter plates are installed inside the filter housing at intervals to perform preliminary filtering on the hydraulic oil. A fixed pipe is arranged inside the inner filter housing, and the oil outlet pipe is slidably connected inside the fixed pipe. The output channel control of the hydraulic oil is realized by the overlap of the first oil hole and the second oil hole. The filter element sleeve is arranged outside the fixed pipe and fixed to the inner wall of the inner filter housing by a positioning ring to perform fine filtering on the hydraulic oil.

[0019] 2. In the present invention, the filter plate is composed of an annular filter portion, an inner cutout, a through groove, a swinging member and a spoiler, which increases the filtering area and filtering level. The swing of the spoiler can change the flow state of the hydraulic oil, so that it can fully contact with the annular filter portion and the filter cloth, thereby improving the filtering effect. At the same time, the irregular flow of the hydraulic oil enables the oil to contact the filter plate at different angles and speeds, which can increase the contact opportunity and area between the oil and the filter plate, thereby improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top view structure of the present invention; Figure 4 for Figure 3 Structural diagram of the middle section line AA; Figure 5 It is a schematic diagram of the connection structure between the impeller and the transmission member in the present invention; Figure 6 It is a structural schematic diagram of the filter plate in the present invention.

[0021] In the figure: 1. filter housing; 2. bottom cover; 3. oil inlet pipe; 4. oil outlet pipe; 5. one-way valve; 6. filter plate; 61. annular filter portion; 62. inner cutout; 63. through groove; 64. spoiler; 65. filter cloth; 7. wire rope; 8. guide pulley; 9. inner filter housing; 10. fixing pipe; 11. filter element; 12. positioning ring; 13. first oil hole; 14. second oil hole; 15. oil pipeline; 16. rotating shaft; 17. impeller; 18. cylindrical barrel; 19. spiral groove; 20. mounting frame; 21. connecting rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 6 The present invention provides a technical solution: a hydraulic oil filter device for hydraulic equipment, comprising The filter housing 1 is a hollow cylinder structure with an open bottom and a blocked top. The bottom end is detachably connected to a bottom cover 2 for blocking the bottom end. The top surface is provided with an oil inlet pipe 3 and an oil outlet pipe 4 that can slide axially along the filter housing 1. At least two filter plates 6 are provided, and the two filter plates 6 are installed inside the filter housing 1 at intervals; The inner filter housing 9 extends vertically downward along the inner top wall of the filter housing 1, and an oil delivery pipe 15 communicating with the inner cavity of the filter housing 1 is arranged at its bottom end, a fixed pipe 10 extending along its axial direction is arranged inside the inner filter housing 9, an oil outlet pipe 4 is slidably connected to the inside of the fixed pipe 10, a first oil hole 13 is arranged on the side wall of the fixed pipe 10, and a second oil hole 14 overlapping with the first oil hole 13 is arranged on the side wall of the oil outlet pipe 4; The filter element 11 is sleeved on the outside of the fixed tube 10 , and a positioning ring 12 is connected to the bottom end of the filter element 11 . The filter element 11 is fixed to the inner wall of the inner filter housing 9 through the positioning ring 12 .

[0024] Specifically, the filter housing 1 is a hollow cylinder structure with an open bottom and a blocked top, which is convenient for installing internal components. The bottom cover 2 can be detachably connected to the bottom for blocking, which is convenient for later cleaning and maintenance. An oil inlet pipe 3 is arranged on the top surface for inputting hydraulic oil, and an oil outlet pipe 4 can slide axially along the filter housing 1 to cooperate with subsequent filtering operations. The filter plates 6 are installed at intervals inside the filter housing 1 to perform preliminary filtering on the hydraulic oil. A fixed pipe 10 is arranged inside the inner filter housing 9, and the oil outlet pipe 4 is slidably connected inside the fixed pipe 10. The output channel control of the hydraulic oil is realized by the overlap of the first oil hole 13 and the second oil hole 14. The filter element 11 is sleeved on the outside of the fixed pipe 10 and fixed to the inner wall of the inner filter housing 9 by a positioning ring 12 to perform fine filtering on the hydraulic oil.

[0025] The structure is reasonably designed, easy to assemble and disassemble, and convenient to maintain. The arrangement of multiple filter plates 6 and filter elements 11 realizes multi-stage filtration, improves the filtration effect, ensures the cleanliness of the hydraulic oil, and thus prolongs the service life of the hydraulic equipment.

[0026] See also Figure 6 , the filter plate 6 includes The annular filter part 61 is in a disc structure, and filter holes are distributed thereon. An inner cutout 62 is integrally formed at the center of the annular filter part 61, and the inner wall of the inner cutout 62 is fixed to the outer wall of the inner filter housing 9; The through groove 63 is formed on the annular filter portion 61 and has a swinging member disposed therein; The spoiler 64 is arranged inside the through slot 63 via a swinging member, and a filter cloth 65 is connected to the outer wall thereof. One end of the filter cloth 65 away from the spoiler 64 is connected to the outer wall of the opening of the through slot 63 .

[0027] Specifically, the filter plate 6 is composed of an annular filter portion 61, an inner cutout 62, a through groove 63, a swinging piece and a spoiler 64. The annular filter portion 61 is provided with filter holes for preliminary filtration. The inner cutout 62 is fixed on the outer wall of the inner filter housing 9 to achieve installation and positioning. A swinging piece is arranged inside the through groove 63. The spoiler 64 is installed in the through groove 63 through the swinging piece. The outer wall of the spoiler 64 is connected to the filter cloth 65 for further filtration. The swinging piece can cause the spoiler 64 to swing under the action of the flow of hydraulic oil.

[0028] The filtering area and filtering level are increased. The swing of the spoiler 64 can change the flow state of the hydraulic oil, so that it can fully contact the annular filter part 61 and the filter cloth 65, and improve the filtering effect. At the same time, the irregular flow of the hydraulic oil allows the oil to contact the filter plate 6 at different angles and speeds, which can increase the contact opportunities and area between the oil and the filter plate 6, thereby improving the filtering effect. Regularly flowing oil may form a stable flow path in some areas, resulting in some filter media not being fully utilized. Irregular flow can break this stable state, allowing the oil to contact the filter plate 6 more comprehensively, ensuring that more impurities are intercepted and filtered out.

[0029] See also Figure 6 A plurality of through grooves 63 are provided, and the plurality of through grooves 63 are arranged in a circumferential array on the annular filter portion 61 , and a spoiler 64 is arranged inside each through groove 63 .

[0030] Specifically, the provision of multiple through slots 63 and spoiler plates 64 further improves the filtering efficiency. The circumferential array distribution makes the flow of hydraulic oil at the filter plate 6 more uniform, avoids local blockage, and ensures the stability and reliability of the filtering device.

[0031] Swing parts include The rotating rod is horizontally rotatably mounted inside the through slot 63, and the spoiler 64 is fixedly connected to the rotating rod, and the spoiler 64 can swing clockwise or counterclockwise around the axis of the rotating rod; The mainspring is in a spiral structure as a whole and is sleeved on the outer wall of the rotating rod. One end of the mainspring is fixedly connected to the outer wall of the through slot 63, and the other end of the mainspring is fixedly connected to the outer wall of the rotating rod.

[0032] Specifically, the setting of the spring enables the spoiler 64 to swing under the impact of the hydraulic oil, increasing the turbulence of the hydraulic oil and improving the filtering effect. At the same time, the restoring force of the spring can automatically adjust the position of the spoiler 64 when the flow of the hydraulic oil changes, adapting to different working conditions.

[0033] See also Figure 4 A steel wire rope 7 is fixedly connected to the outer wall of the spoiler 64, and one end of the steel wire rope 7 away from the filter plate 6 is fixed to the outer wall of the oil outlet pipe 4. A driving component for driving the oil outlet pipe 4 to slide back and forth along the inner wall of the fixed pipe 10 is provided at the bottom end of the inner filter housing 9. When the driving component drives the oil outlet pipe 4 to slide back and forth along the fixed pipe 10, the steel wire rope 7 can drive the spoiler 64 to rotate.

[0034] Specifically, the steel wire rope 7 is driven by the sliding of the oil outlet pipe 4, and then the spoiler 64 is rotated, which further changes the flow state of the hydraulic oil, improves the filtering effect, and can automatically adjust the filtering state according to the flow condition of the hydraulic oil.

[0035] See also Figure 4, the drive components include The rotating shaft 16 is rotatably connected to the interior of the fixed tube 10 and is arranged along the axial direction of the fixed tube 10; The impeller 17 is arranged at the bottom end of the rotating shaft 16 and can rotate along with the flow of the hydraulic oil; The cylindrical barrel 18 is arranged at the top of the oil delivery pipe 15 and can rotate around the axis of the rotating shaft 16, and a spiral groove 19 is arranged on its outer wall; The connecting rod 21 is vertically arranged along the axial direction of the fixed pipe 10 , and the top end is rotatably connected to the bottom end of the oil outlet pipe 4 , and the bottom end is connected to a follower pin, which is inserted into the inside of the spiral groove 19 .

[0036] Specifically, the hydraulic oil drives the impeller 17 to rotate, and then drives the rotating shaft 16 and the cylindrical tube 18 to rotate. The spiral groove 19 and the follower pin cooperate to make the connecting rod 21 and the oil outlet pipe 4 slide back and forth along the fixed pipe 10. The flow energy of the hydraulic oil is used to drive the sliding of the oil outlet pipe 4, without the need for an additional power source, which is energy-saving and environmentally friendly. At the same time, the reciprocating sliding of the oil outlet pipe 4 can drive the steel wire rope 7 and the spoiler 64 to move, realize dynamic filtration, and improve filtration efficiency.

[0037] See also Figure 4 A guide pulley 8 for guiding the steel wire rope 7 is provided inside and outside the filter housing 1 , and the steel wire rope 7 is slidably connected to the guide pulley 8 .

[0038] Specifically, the wire rope 7 is slidably connected to the guide pulley 8 to guide the wire rope 7 to ensure that the movement direction of the wire rope 7 is stable. The setting of the guide pulley 8 makes the movement of the wire rope 7 smoother, avoiding the wire rope 7 from getting entangled or stuck during the movement, thereby ensuring the reliability and stability of the device.

[0039] See also Figure 4 A mounting frame 20 is disposed inside the fixed tube 10 , a bearing is disposed on the mounting frame 20 , and the rotating shaft 16 is inserted into the inner ring of the bearing.

[0040] Specifically, the arrangement of the bearing ensures the rotation stability of the rotating shaft 16, reduces the operating noise and wear of the device, and increases the service life of the device.

[0041] See also Figure 4 The oil inlet pipe 3 extends vertically upward from the top surface of the filter housing 1 , and a plurality of oil inlet pipes 3 are provided, and a one-way valve 5 is provided inside each oil inlet pipe 3 .

[0042] Specifically, multiple oil inlet pipes 3 can increase the input speed of hydraulic oil and improve filtering efficiency. The setting of the one-way valve 5 ensures the one-way flow of hydraulic oil, prevents the hydraulic oil from flowing back and damaging the filtering device, and improves the safety and reliability of the device.

[0043] See also Figure 4 The bottom cover 2 is a hollow truncated cone structure, and the bottom cover 2 is threadedly connected to the bottom of the filter housing 1. The inner wall of the bottom end port of the filter housing 1 is provided with an internal thread, and the outer wall of the top end port of the bottom cover 2 is provided with an external thread matched therewith.

[0044] Working principle: Hydraulic oil enters the filter device through multiple oil inlet pipes 3 on the top surface of the filter housing 1. The one-way valve 5 in the oil inlet pipe 3 ensures the one-way flow of hydraulic oil. The hydraulic oil first enters the interior of the filter housing 1 and encounters the filter plates 6 installed at intervals; The filter holes distributed on the annular filter portion 61 of the filter plate 6 perform preliminary filtration on the hydraulic oil. When the hydraulic oil flows through the through grooves 63 distributed in a circumferential array on the annular filter portion 61, it pushes the spoiler 64. The spoiler 64 is installed in the through groove 63 by horizontal rotation of the rotating rod. Under the impact of the hydraulic oil, the spoiler 64 can swing clockwise or counterclockwise around the axis of the rotating rod. The spring with a vortex structure sleeved on the outer wall of the rotating rod is fixed to the outer wall of the through groove 63 at one end and the outer wall of the rotating rod at the other end, providing a restoring force for the swing of the spoiler 64. The filter cloth 65 connected to the outer wall of the spoiler 64 further intercepts impurities. At the same time, the swing of the spoiler 64 changes the flow state of the hydraulic oil, causing it to contact the filter plate 6 irregularly, thereby improving the filtering effect.

[0045] The hydraulic oil that has been initially filtered by the filter plate 6 continues to flow downward and enters the inner filter housing 9. The inner filter housing 9 extends vertically downward along the inner top wall of the filter housing 1, and the oil delivery pipe 15 at its bottom end is connected to the inner cavity of the filter housing 1. When the hydraulic oil flows in the oil delivery pipe 15, it drives the impeller 17 set at the bottom end of the rotating shaft 16 to rotate. The impeller 17 drives the rotating shaft 16 to rotate, thereby causing the cylindrical barrel 18 set in the fixed pipe 10 to rotate around the axis of the rotating shaft 16. A spiral groove 19 is provided on the outer wall of the cylindrical barrel 18. As the cylindrical barrel 18 rotates, the spiral groove 19 drives the connecting rod 21 to be vertically arranged along the axial direction of the fixed pipe 10. The movement of the follower pin in the spiral groove 19 causes the connecting rod 21 to drive the oil outlet pipe 4 to slide back and forth along the inner wall of the fixed pipe 10.

[0046] When the oil outlet pipe 4 slides, the steel wire rope 7 fixed on the outer wall drives the spoiler 64 to rotate. The steel wire rope 7 slides under the guidance of the guide pulley 8 arranged inside and outside the filter housing 1 to ensure the stability of the movement direction. The oil outlet pipe 4 is slidably connected to the inside of the fixed pipe 10. A first oil hole 13 is arranged on the side wall of the fixed pipe 10. A second oil hole 14 overlapping with the first oil hole 13 is arranged on the side wall of the oil outlet pipe 4. The hydraulic oil finely filtered by the filter element 11 in the inner filter housing 9 is discharged through the fixed pipe 10 and the oil outlet pipe 4. The multi-stage filtering design can effectively remove various impurities in the hydraulic oil, whether it is large particles of impurities or tiny particles, can be fully intercepted. The ability to remove impurities is improved to ensure that the filtered hydraulic oil has a higher cleanliness, thereby reducing the wear of various components of the hydraulic press caused by impurities, improving the working accuracy and reliability of the hydraulic press, and extending its service life.

Claims

1. A hydraulic oil filter device for hydraulic equipment, characterized in that: include The filter housing (1) is a hollow cylindrical structure with an open bottom end and a sealed top end, the bottom end of which is detachably connected to a bottom cover (2) for sealing the filter housing, and the top surface of which is provided with an oil inlet pipe (3) and an oil outlet pipe (4) that can slide axially along the filter housing (1); At least two filter plates (6) are provided, and the two filter plates (6) are installed inside the filter housing (1) at intervals; The inner filter housing (9) extends vertically downward along the inner top wall of the filter housing (1), and is provided with an oil delivery pipe (15) at its bottom end, which is connected to the inner cavity of the filter housing (1). A fixed pipe (10) extending along its axial direction is provided inside the inner filter housing, and the oil outlet pipe (4) is slidably connected to the inside of the fixed pipe (10). A first oil hole (13) is provided on the side wall of the fixed pipe (10), and a second oil hole (14) overlapping with the first oil hole (13) is provided on the side wall of the oil outlet pipe (4); The filter element (11) is sleeved on the outside of the fixed tube (10), and a positioning ring (12) is connected to the bottom end thereof. The filter element (11) is fixed to the inner wall of the inner filter housing (9) via the positioning ring (12).

2. A hydraulic oil filter device for hydraulic equipment according to claim 1, characterized in that: The filter plate (6) comprises The annular filter portion (61) is in the form of a disc-shaped structure, with filter holes distributed thereon, an inner cutout (62) is integrally formed at the center of the annular filter portion (61), and the inner wall of the inner cutout (62) is fixed to the outer wall of the inner filter housing (9); A through groove (63) is formed through the annular filter portion (61) and has a swinging member disposed therein; The spoiler (64) is arranged inside the through slot (63) via a swinging member, and a filter cloth (65) is connected to its outer wall, wherein one end of the filter cloth (65) away from the spoiler (64) is connected to the outer wall of the opening of the through slot (63).

3. A hydraulic oil filter device for hydraulic equipment according to claim 2, characterized in that: A plurality of through grooves (63) are provided, and the plurality of through grooves (63) are arranged in a circumferential array on the annular filter portion (61), and a spoiler (64) is arranged inside each through groove (63).

4. A hydraulic oil filter device for hydraulic equipment according to claim 3, characterized in that: The swing member comprises A rotating rod is horizontally rotatably mounted inside the through slot (63), and the spoiler (64) is fixedly connected to the rotating rod, and the spoiler (64) can swing clockwise or counterclockwise around the axis of the rotating rod; The mainspring has a spiral structure as a whole and is sleeved on the outer wall of the rotating rod. One end of the mainspring is fixedly connected to the outer wall of the through slot (63), and the other end of the mainspring is fixedly connected to the outer wall of the rotating rod.

5. A hydraulic oil filter device for hydraulic equipment according to claim 4, characterized in that: A steel wire rope (7) is fixedly connected to the outer wall of the spoiler (64); one end of the steel wire rope (7) away from the filter plate (6) is fixed to the outer wall of the oil outlet pipe (4); a driving component for driving the oil outlet pipe (4) to slide back and forth along the inner wall of the fixed pipe (10) is provided at the bottom end of the inner filter housing (9); when the driving component drives the oil outlet pipe (4) to slide back and forth along the fixed pipe (10), the steel wire rope (7) can drive the spoiler (64) to rotate.

6. A hydraulic oil filter device for hydraulic equipment according to claim 5, characterized in that: The drive assembly includes A rotating shaft (16) is rotatably connected to the interior of the fixed tube (10) and is arranged along the axial direction of the fixed tube (10); An impeller (17) is arranged at the bottom end of the rotating shaft (16) and can rotate along with the flow of hydraulic oil; A cylindrical barrel (18) is arranged at the top end of the oil delivery pipe (15) and is rotatable around the axis of the rotating shaft (16), and a spiral groove (19) is arranged on the outer wall of the cylindrical barrel; The connecting rod (21) is vertically arranged along the axis of the fixed pipe (10), the top end of which is rotatably connected to the bottom end of the oil outlet pipe (4), and the bottom end of which is connected to a follower pin, which is inserted into the interior of the spiral groove (19).

7. A hydraulic oil filter device for hydraulic equipment according to claim 5, characterized in that: Guide pulleys (8) for guiding the steel wire rope (7) are provided inside and outside the filter housing (1), and the steel wire rope (7) is slidably connected to the guide pulleys (8).

8. A hydraulic oil filter device for hydraulic equipment according to claim 6, characterized in that: A mounting frame (20) is arranged inside the fixed tube (10), a bearing is arranged on the mounting frame (20), and the rotating shaft (16) is inserted into the inner ring of the bearing.

9. The hydraulic oil filter device for hydraulic equipment according to claim 1, characterized in that: The oil inlet pipe (3) extends vertically upward from the top surface of the filter housing (1), and a plurality of the oil inlet pipes (3) are provided, each of the oil inlet pipes (3) being provided with a one-way valve (5) inside.

10. The hydraulic oil filter device for hydraulic equipment according to claim 1, characterized in that: The bottom cover (2) is in the form of a hollow truncated cone structure, and is threadedly connected to the bottom of the filter housing (1); an inner wall of a bottom port of the filter housing (1) is provided with an internal thread, and an outer wall of a top port of the bottom cover (2) is provided with an external thread matching the internal thread.

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