Bidirectional hydraulic filter

Abstract

The invention discloses a bidirectional hydraulic filter, and relates to the technical field of hydraulic filters, the hydraulic filter comprises a shell, a filter cylinder is arranged in the shell, an accommodating cavity is formed between the shell and the filter cylinder, and a filter head is fixedly arranged at the top end of the shell; an oil inlet pipe communicated with the accommodating cavity and an oil outlet pipe communicated with the filter cartridge through a communicating pipe are arranged on the filter head, a cleaning mechanism for cleaning the side wall of the filter cartridge is fixedly arranged on the filter head, and a cleaning assembly for cleaning the side wall of the filter cartridge during cleaning is arranged on the cleaning mechanism. When the device is used, the problems that in the prior art, in the long-term use process of a hydraulic filter, a large number of impurities are attached to a filter screen, if the impurities are not cleaned in time, the filter screen is blocked, the flowing resistance of hydraulic oil is increased, and the filtering effect is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic filter technology, and more specifically, to a bidirectional hydraulic filter. Background Technology

[0002] A hydraulic filter is a filtration device used to filter hydraulic oil. Existing hydraulic filters typically consist of components such as a housing, filter element, and sealing ring. The filter element is placed inside the housing and sealed by the sealing ring and the housing to prevent hydraulic oil from entering from the inlet and flowing directly out from the outlet without passing through the filter element.

[0003] However, during long-term use, existing hydraulic filters accumulate a large amount of impurities on their filter screens. If not cleaned in time, this can lead to filter screen blockage, increase the flow resistance of hydraulic oil, and affect the filtration effect. Currently, most methods for cleaning impurities on the filter screens require disassembling the filter for manual cleaning, which is cumbersome and can affect the normal operation of the hydraulic system.

[0004] Therefore, the present invention urgently needs to solve the problem of providing a bidirectional hydraulic filter that can wash the filter screen during use and can specifically remove stubborn impurities, avoiding problems such as reduced filtration flow and increased pressure loss caused by impurity accumulation. Summary of the Invention

[0005] To address the aforementioned technical problems, the purpose of this invention is to overcome the issue that in existing hydraulic filters, a large amount of impurities accumulate on the filter screen during long-term use. If not cleaned in time, this can lead to filter screen blockage, increased hydraulic oil flow resistance, and reduced filtration efficiency. The invention provides a bidirectional hydraulic filter that can wash the filter screen during use and specifically remove stubborn impurities, preventing problems such as decreased filtration flow and increased pressure loss caused by impurity accumulation.

[0006] To achieve the above objectives, the present invention provides a bidirectional hydraulic filter, the hydraulic filter comprising: a housing, a filter cartridge disposed within the housing, a receiving cavity formed between the housing and the filter cartridge, and a filter head fixedly disposed at the top end of the housing, the filter head having an oil inlet pipe communicating with the receiving cavity and an oil outlet pipe communicating with the filter cartridge through a connecting pipe, and a cleaning mechanism for cleaning the side wall of the filter cartridge fixedly disposed on the filter head, the cleaning mechanism having a cleaning component for cleaning the side wall of the filter cartridge while cleaning.

[0007] Preferably, the cleaning mechanism includes: a water tank fixedly mounted on the filter head, a rotating shaft rotatably mounted inside the water tank, multiple sets of fan blades fixedly mounted at intervals on the circumferential surface of the rotating shaft, and a water inlet pipe corresponding to one set of fan blades fixedly mounted on the water tank, and the rotation of the rotating shaft passing through the filter cylinder, and a cleaning component for cleaning the side wall of the filter cylinder fixedly mounted on its bottom surface.

[0008] Preferably, the cleaning mechanism further includes: multiple sets of openings on the bottom surface of the water tank, the openings being connected to the filter cartridge via a cleaning pipe, a sleeve rod being slidably sleeved on the rotating shaft, a movable plate being fixedly provided on the bottom surface of the sleeve rod, a plug corresponding to each opening being fixedly provided on the bottom surface of the movable plate, a guide groove being provided on the surface of the rotating shaft, and a protrusion cooperating with the guide groove being fixedly provided on the inner side wall of the sleeve rod.

[0009] Preferably, the cleaning pipe is inclined with its outlet facing the inner wall of the filter cartridge, and the plug has a trapezoidal shape with a larger top and a smaller bottom.

[0010] Preferably, the cleaning assembly includes: a fixed sleeve fixedly fitted onto one end of the rotating shaft, a connecting rod fixedly provided on the circumferential surface of the fixed sleeve, a cleaning plate parallel to the filter cartridge fixedly provided at one end of the connecting rod, and multiple sets of brush heads in contact with the surface of the filter cartridge fixedly provided on the cleaning plate.

[0011] Preferably, the rotating shaft is provided with multiple sets of vibration components inside the filter cartridge for striking the side wall of the filter cartridge to prevent the filter holes from clogging.

[0012] Preferably, each vibration assembly includes: a turntable fixedly sleeved on the rotating shaft and located inside the filter cartridge; a limiting groove is formed on the turntable; a fixed cylinder is slidably provided in the limiting groove via a fixed rod; a sliding rod is slidably sleeved inside the fixed cylinder; a striking plate is fixedly provided at the top of the sliding rod to contact the inner sidewall of the filter cartridge; and a driving component is provided on the turntable to drive the sliding rod to slide back and forth.

[0013] Preferably, the driving component includes: an arc-shaped sliding groove on the turntable, the outer diameter of the sliding groove being larger than the inner diameter, and a guide rod slidingly disposed within the sliding groove, the guide rod slidingly penetrating the fixed cylinder and being fixedly connected to the side wall of the sliding rod, and a sliding guide groove for the guide rod to slide on the surface of the fixed cylinder.

[0014] Preferably, the bottom surface of the housing is detachably provided with a collection mechanism for collecting impurities from cleaning and rinsing.

[0015] Preferably, the collection mechanism includes: a collection trough that is detachably mounted on the bottom surface of the housing by bolts and communicates with a receiving cavity inside the housing, and a solenoid valve is fixedly provided at the top of the collection trough.

[0016] According to the above technical solution, the present invention provides a bidirectional hydraulic filter with the following advantages in use: the cleaning mechanism on the filter head can flush the side wall of the filter cartridge, and the cleaning component can specifically remove stubborn impurities. Compared with single flushing or manual cleaning, this structure can more thoroughly remove impurities from the side wall of the filter cartridge, avoid problems such as decreased filtration flow and increased pressure loss caused by impurity accumulation, and ensure the stable filtration efficiency of the filter in the long term.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description section; and all parts not covered in the present invention are the same as or can be implemented using the prior art. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a bidirectional hydraulic filter provided in a preferred embodiment; Figure 2 This is a cross-sectional perspective view of a two-way hydraulic filter provided in a preferred embodiment; Figure 3 A planar bidirectional hydraulic filter cleaning mechanism provided in a preferred embodiment Figure 1 ; Figure 4 yes Figure 3 Sectional view of AA; Figure 5 A planar bidirectional hydraulic filter cleaning mechanism provided in a preferred embodiment Figure 1 ; Figure 6 yes Figure 5 Sectional view of BB; Figure 7 This is a three-dimensional structural diagram of a bidirectional hydraulic filter cleaning assembly provided in a preferred embodiment; Figure 8 This is a partial three-dimensional structural schematic diagram of a bidirectional hydraulic filter vibration assembly provided in a preferred embodiment; Figure 9 This is a three-dimensional structural schematic diagram of a bidirectional hydraulic filter vibration assembly provided in a preferred embodiment; Figure 10 This is a cross-sectional perspective view of a three-dimensional structure of a bidirectional hydraulic filter vibration assembly provided in a preferred embodiment.

[0019] Explanation of reference numerals in the attached figures 100. Housing; 101. Filter head; 102. Oil inlet pipe; 103. Oil outlet pipe; 104. Filter cartridge; 105. Connecting pipe; 200. Cleaning mechanism; 201. Water tank; 202. Water inlet pipe; 203. Fan blade; 204. Shaft; 205. Sleeve rod; 206. Moving plate; 207. Plug; 208. Opening; 209. Guide groove; 210. Protrusion; 211. Cleaning pipe; 300. Cleaning Components; 301, fixing sleeve; 302, connecting rod; 303, cleaning plate; 304, brush head; 400, vibration assembly; 401, turntable; 402, sliding groove; 403, limiting groove; 404, fixing cylinder; 405, sliding rod; 406, striking plate; 407, fixing rod; 408, guide rod; 409, sliding guide groove; 500, collection mechanism; 501, collection groove; 502, solenoid valve. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "inner," and "outer" in the terminology represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0022] Reference Figures 1-10 As shown, a bidirectional hydraulic filter includes: a housing 100, a filter cartridge 104 disposed inside the housing 100, a receiving cavity formed between the housing 100 and the filter cartridge 104, and a filter head 101 fixedly disposed at the top of the housing 100. The filter head 101 is provided with an oil inlet pipe 102 communicating with the receiving cavity and an oil outlet pipe 103 communicating with the filter cartridge 104 through a connecting pipe 105. A cleaning mechanism 200 for cleaning the side wall of the filter cartridge 104 is fixedly disposed on the filter head 101, and a cleaning component 300 for cleaning the side wall of the filter cartridge 104 while cleaning.

[0023] In use, hydraulic oil first enters the receiving cavity between the housing 100 and the filter cartridge 104 through the oil inlet pipe 102 on the filter head 101. Then, under pressure, the hydraulic oil passes through the side wall of the filter cartridge 104. The filtered clean hydraulic oil enters the interior of the filter cartridge 104 and is then transported to the oil outlet pipe 103 on the filter head 101 through the connecting pipe 105. Finally, it is discharged from the oil outlet pipe 103, completing the one-way filtration process of the hydraulic oil. When the hydraulic system needs to supply oil in reverse, the hydraulic oil can enter from the oil outlet pipe 103, pass through the connecting pipe 105 into the interior of the filter cartridge 104, pass through the side wall of the filter cartridge 104 and enter the receiving cavity, and then be discharged from the oil inlet pipe 102, realizing bidirectional filtration.

[0024] When a lot of impurities adhere to the side wall of the filter cartridge 104, affecting the filtration efficiency, the cleaning mechanism 200 fixed on the filter head 101 is activated. The cleaning mechanism 200 drives the cleaning component 300 on it to move. The cleaning mechanism 200 washes the side wall of the filter cartridge 104. At the same time, the cleaning component 300 directly contacts or acts at close range with the side wall of the filter cartridge 104 to physically clean the stubborn impurities attached to the side wall of the filter cartridge 104.

[0025] Reference Figures 2-6 As shown, the cleaning mechanism 200 includes: a water tank 201 fixedly mounted on the filter head 101, a rotating shaft 204 rotatably mounted inside the water tank 201, a plurality of fan blades 203 fixedly mounted at intervals on the circumferential surface of the rotating shaft 204, and a water inlet pipe 202 corresponding to one of the fan blades 203 fixedly mounted on the water tank 201, and the rotation of the rotating shaft 204 passes through the filter cylinder 104, and a cleaning assembly 300 for cleaning the side wall of the filter cylinder 104 is fixedly mounted on its bottom surface.

[0026] In the above scheme, when the filter cartridge 104 needs to be cleaned, first ensure that the water tank 201 fixed on the filter head 101 stores a sufficient amount of cleaning medium. At this time, the rotating shaft 204 in the water tank 201 is in an initial static state, and the multiple sets of fan blades 203 fixed at intervals on its circumference are not rotated under force. High pressure fluid is introduced into the water tank 201 through the water inlet pipe 202 fixed on the water tank 201. The high pressure fluid acts precisely on a set of fan blades 203 corresponding to the water inlet pipe 202. Under the action of the fluid impact force, the fan blades 203 drive the rotating shaft 204 to rotate around its own axis. When the rotating shaft 204 rotates, the cleaning component 300 fixed at its bottom rotates synchronously with the rotating shaft 204. During the rotation, the cleaning component 300 fully contacts the side wall of the filter cartridge 104, scraping or brushing off the impurities attached to the side wall of the filter cartridge 104, thereby achieving mechanical cleaning of the side wall of the filter cartridge 104.

[0027] Reference Figures 2-6 As shown, the cleaning mechanism 200 further includes: multiple sets of openings 208 formed on the bottom surface of the water tank 201, the openings 208 being connected to the filter cartridge 104 through the cleaning pipe 211, a sleeve rod 205 being slidably sleeved on the rotating shaft 204, a movable plate 206 being fixedly provided on the bottom surface of the sleeve rod 205, a plug 207 corresponding to each opening 208 being fixedly provided on the bottom surface of the movable plate 206, a guide groove 209 being formed on the surface of the rotating shaft 204, and a protrusion 210 being fixedly provided on the inner side wall of the sleeve rod 205 to cooperate with the guide groove 209.

[0028] In the above scheme, when the cleaning function is activated, the rotating shaft 204 starts to rotate under the drive of the fan blade 203. Since the protrusion 210 on the inner side wall of the sleeve 205 is embedded in the guide groove 209 on the surface of the rotating shaft 204, when the rotating shaft 204 rotates, the sleeve 205 moves downward along the axis of the rotating shaft 204 through the cooperation of the guide groove 209 and the protrusion 210. When the sleeve 205 moves downward, it drives the moving plate 206 to move downward synchronously. The plug 207 disengages from the opening 208 with the moving plate 206, and the opening 208 is opened. The cleaning medium in the water tank 201 flows into the cleaning pipe 211 through the opening 208, and is then transported to the inside of the filter cartridge 104 through the cleaning pipe 211 to rinse the side wall of the filter cartridge 104. At the same time, the rotating shaft 204 drives the cleaning component 300 to rotate and clean. After the cleaning is completed, the high-pressure fluid is stopped from being supplied to the water inlet pipe 202, the fan blade 203 loses its driving force, and the rotating shaft 204 gradually stops rotating.

[0029] Reference Figure 4 and Figure 6 As shown, the cleaning pipe 211 is inclined with its outlet facing the inner wall of the filter cartridge 104, and the plug 207 has a trapezoidal shape with a larger upper end and a smaller lower end.

[0030] In the above scheme, when the cleaning mechanism 200 is activated and the plug 207 disengages from the opening 208, the cleaning medium in the water tank 201 enters the inclined cleaning pipe 211 through the opening 208. Since the water outlet of the cleaning pipe 211 faces the inner wall of the filter cartridge 104, after the cleaning medium flows out of the cleaning pipe 211, it will be sprayed directly onto the inner wall of the filter cartridge 104 at a specific angle, forming a directional impact on the impurities on the side wall of the filter cartridge 104. During the normal filtration stage, the plug 207, which has a trapezoidal cross-section with a larger upper end and a smaller lower end, first contacts the opening 208 at its lower end. As the sleeve rod 205 moves down, the upper end of the plug 207 gradually fits tightly against the inner wall of the opening 208, achieving precise and airtight sealing. During the cleaning stage, when the sleeve rod 205 moves up, the plug 207 gradually detaches from the opening 208 from the upper end to the lower end, avoiding the inability to open smoothly due to the plug 207 getting stuck between the plug 207 and the opening 208.

[0031] Reference Figures 7-8 As shown, the cleaning assembly 300 includes: a fixed sleeve 301 fixedly sleeved on one end of the rotating shaft 204, a connecting rod 302 fixedly provided on the circumferential surface of the fixed sleeve 301, a cleaning plate 303 parallel to the filter cartridge 104 fixedly provided on one end of the connecting rod 302, and a plurality of brush heads 304 in contact with the surface of the filter cartridge 104 fixedly provided on the cleaning plate 303.

[0032] In the above scheme, when the cleaning mechanism 200 is started, the high-pressure fluid is introduced into the water inlet pipe 202 to drive the fan blade 203 to rotate the shaft 204. The fixed sleeve 301, which is fixedly sleeved on one end of the shaft 204, rotates synchronously with the shaft 204, thereby driving the connecting rod 302 fixed on the circumferential surface of the fixed sleeve 301 to rotate. When the connecting rod 302 rotates, the cleaning plate 303 fixed at one end of it moves in a circular motion with the connecting rod 302. The multiple sets of brush heads 304 fixed on the cleaning plate 303 are in close contact with the surface of the filter cartridge 104. During the circular motion of the cleaning plate 303, the brush heads 304 slide continuously on the side wall of the filter cartridge 104 to brush and wash the dust, oil, fine particles and other impurities attached to the side wall of the filter cartridge 104, and peel the impurities from the filter hole surface of the filter cartridge 104. The peeled impurities are discharged with hydraulic oil or cleaning medium.

[0033] Reference Figures 8-10 As shown, the rotating shaft 204 is provided with multiple sets of vibration components 400 inside the filter cylinder 104 for striking the side wall of the filter cylinder 104 to prevent filter pore blockage. Each set of vibration components 400 includes: a turntable 401 fixedly sleeved on the rotating shaft 204 and located inside the filter cylinder 104. The turntable 401 has a limiting groove 403. A fixed cylinder 404 is slidably provided in the limiting groove 403 through a fixed rod 407. A sliding rod 405 is slidably sleeved in the fixed cylinder 404. A striking plate 406 is fixedly provided at the top of the sliding rod 405 and contacts the inner side wall of the filter cylinder 104. The turntable 401 is provided with a driving component to drive the sliding rod 405 to slide back and forth.

[0034] In the above scheme, when the rotating shaft 204 rotates, the turntable 401, which is fixedly sleeved on the rotating shaft 204 and located inside the filter cylinder 104, rotates synchronously with the rotating shaft 204. During the rotation of the turntable 401, the driving component on it starts to work, driving the sliding rod 405, which is slidably sleeved inside the fixed cylinder 404, to slide back and forth along the axis of the fixed cylinder 404. When the sliding rod 405 slides back and forth, the striking plate 406 fixed at its top end moves back and forth with the sliding rod 405. When the sliding rod 405 moves towards the filter cylinder 104, the striking plate 406 contacts the inner side wall of the filter cylinder 104 and generates a striking force, striking the side wall of the filter cylinder 104. When the sliding rod 405 moves in the opposite direction, the striking plate 406 disengages from the inner side wall of the filter cylinder 104, completing one striking cycle. The reciprocating motion continuously strikes the side wall of the filter cylinder 104 intermittently.

[0035] Reference Figures 9-10 As shown, the driving component includes: an arc-shaped sliding groove 402 on the turntable 401, the outer diameter of the sliding groove 402 being larger than the inner diameter, and a guide rod 408 slidingly disposed within the sliding groove 402. The guide rod 408 slides through the fixed cylinder 404 and is fixedly connected to the side wall of the sliding rod 405. The surface of the fixed cylinder 404 is provided with a sliding guide groove 409 for the guide rod 408 to slide.

[0036] In the above scheme, when the rotating shaft 204 drives the turntable 401 to rotate, the arc-shaped sliding groove 402 opened on the turntable 401 rotates together with the turntable 401. The guide rod 408 slidably disposed in the sliding groove 402 moves along the arc-shaped trajectory of the sliding groove 402 while making circular motion with the turntable 401. Since the guide rod 408 slides through the fixed cylinder 404 and is fixedly connected to the side wall of the sliding rod 405, and the surface of the fixed cylinder 404 is provided with a sliding guide groove 409 for the guide rod 408 to slide, when the guide rod 408 moves from the inner circle to the outer circle along the sliding groove 402, it will drive the sliding rod 405 to slide away from the turntable 401 along the axis of the fixed cylinder 404; when the guide rod 408 moves from the outer circle to the inner circle along the sliding groove 402, it will drive the sliding rod 405 to slide closer to the turntable 401 along the axis of the fixed cylinder 404, realizing the reciprocating sliding of the sliding rod 405.

[0037] Reference Figures 1-2 As shown, the bottom surface of the housing 100 is detachably provided with a collection mechanism 500 for collecting impurities from cleaning and tidying. The collection mechanism 500 includes a collection groove 501 that is detachably mounted on the bottom surface of the housing 100 by bolts and communicates with the receiving cavity inside the housing 100. A solenoid valve 502 is fixedly provided at the top of the collection groove 501.

[0038] In the above scheme, when the filter is in normal filtration state, the solenoid valve 502 fixed at the top of the collection tank 501 is in the closed state. At this time, the channel between the receiving cavity in the housing 100 and the collection tank 501 is blocked. The hydraulic oil only circulates between the receiving cavity, the filter cartridge 104, the connecting pipe 105, the oil inlet pipe 102, and the oil outlet pipe 103 to prevent the hydraulic oil from entering the collection tank 501 and causing impurities in the collection tank 501 to mix with the hydraulic oil. When the cleaning mechanism 200 is started to clean the filter cartridge 104, the solenoid valve 502 is controlled to open, so that the collection tank 501, which is detachably installed on the bottom surface of the housing 100 by bolts, is connected to the receiving cavity in the housing 100. The impurities stripped from the filter cartridge 104 enter the interior of the collection tank 501 with the cleaning medium or hydraulic oil through the solenoid valve 502, and the impurities are deposited in the collection tank 501. After processing, close the solenoid valve 502 to block the connection between the receiving cavity and the collection tank 501. When the impurities in the collection tank 501 accumulate to a certain amount, unscrew the connecting bolts, remove the collection tank 501 from the bottom of the housing 100, clean the internal impurities, and then reinstall the collection tank 501 in place using bolts.

[0039] In summary, the bidirectional hydraulic filter provided by this invention, when impurities accumulate on the side wall of the filter cartridge 104 and affect the filtration efficiency, activates the cleaning function. High-pressure fluid is introduced into the water tank 201 through the inlet pipe 202 on the water tank 201. The high-pressure fluid impacts the fan blades 203 corresponding to the inlet pipe 202, causing the rotating shaft 204 to rotate around its own axis. When the rotating shaft 204 rotates, its surface guide groove 209 cooperates with the protrusion 210 on the inner side wall of the sleeve rod 205, converting the rotational motion into linear motion, driving the sleeve rod 205 to slide downward along the rotating shaft 204. The sleeve rod 205 drives the bottom moving plate 206 to move downward synchronously, causing the plug 207 on the bottom surface of the moving plate 206 to disengage from the opening 208, opening the opening 208, and simultaneously controlling the solenoid valve 502 at the top of the collection tank 501 to open, so that the collection tank 501, which is detachably installed on the bottom surface of the housing 100 by bolts, is connected to the receiving cavity, preparing for subsequent impurity collection. After the opening 208 is opened, the cleaning medium in the water tank 201 flows into the inclined cleaning pipe 211 through the opening 208. The outlet of the cleaning pipe 211 faces the inner wall of the filter cartridge 104, spraying the cleaning medium directionally onto the side wall of the filter cartridge 104 to loosen the attached impurities. When the rotating shaft 204 rotates, the cleaning assembly 300 fixed at its bottom rotates synchronously. The fixing sleeve 301 rotates with the rotating shaft 204, driving the connecting rod 302 and the cleaning plate 303 at one end to make a circular motion. The multiple sets of brush heads 304 on the cleaning plate 303 contact the surface of the filter cartridge 104 to brush away the residual impurities and remove them from the filter cartridge. The sidewall of the filter cartridge 104 peels off, and multiple sets of vibration components 400 located inside the filter cartridge 104 on the rotating shaft 204 rotate with the rotating shaft 204. The turntable 401 rotates synchronously, and the guide rod 408 in the arc-shaped sliding groove 402 on its surface moves along the trajectory of the sliding groove 402. At the same time, it slides along the sliding guide groove 409 on the surface of the fixed cylinder 404, driving the sliding rod 405 to slide back and forth inside the fixed cylinder 404. The striking plate 406 at the top of the sliding rod 405 moves back and forth with the sliding rod 405, intermittently striking the inner sidewall of the filter cartridge 104, causing stubborn impurities stuck in the filter holes to fall off and preventing the filter holes from clogging.

[0040] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0042] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A bidirectional hydraulic filter, characterized in that, The hydraulic filter includes: a housing (100), a filter cartridge (104) is provided inside the housing (100), a receiving cavity is formed between the housing (100) and the filter cartridge (104), and a filter head (101) is fixedly provided at the top of the housing (100). The filter head (101) is provided with an oil inlet pipe (102) communicating with the receiving cavity and an oil outlet pipe (103) communicating with the filter cartridge (104) through a connecting pipe (105). A cleaning mechanism (200) for cleaning the side wall of the filter cartridge (104) is fixedly provided on the filter head (101), and a cleaning component (300) for cleaning the side wall of the filter cartridge (104) while cleaning is being cleaned.

2. The bidirectional hydraulic filter according to claim 1, characterized in that, The cleaning mechanism (200) includes: a water tank (201) fixedly mounted on the filter head (101), a rotating shaft (204) rotatably mounted inside the water tank (201), a plurality of fan blades (203) fixedly mounted at intervals on the circumferential surface of the rotating shaft (204), and an inlet pipe (202) corresponding to one of the fan blades (203) fixedly mounted on the water tank (201), and the rotation of the rotating shaft (204) passes through the filter cylinder (104), and a cleaning component (300) for cleaning the side wall of the filter cylinder (104) is fixedly mounted on its bottom surface.

3. A bidirectional hydraulic filter according to claim 2, characterized in that, The cleaning mechanism (200) further includes: multiple sets of openings (208) on the bottom surface of the water tank (201), the openings (208) being connected to the filter cartridge (104) through the cleaning pipe (211), a sleeve rod (205) being slidably sleeved on the rotating shaft (204), a movable plate (206) being fixedly provided on the bottom surface of the sleeve rod (205), a plug (207) corresponding to the openings (208) being fixedly provided on the bottom surface of the movable plate (206), a guide groove (209) being provided on the surface of the rotating shaft (204), and a protrusion (210) being fixedly provided on the inner side wall of the sleeve rod (205) to cooperate with the guide groove (209).

4. A bidirectional hydraulic filter according to claim 3, characterized in that, The cleaning pipe (211) is inclined and its outlet is facing the inner wall of the filter cartridge (104). The plug (207) has a trapezoidal shape with a larger top and a smaller bottom.

5. A bidirectional hydraulic filter according to claim 2, characterized in that, The cleaning assembly (300) includes: a fixed sleeve (301) fixedly sleeved on one end of the rotating shaft (204), a connecting rod (302) fixedly provided on the circumferential surface of the fixed sleeve (301), a cleaning plate (303) parallel to the filter cartridge (104) fixedly provided on one end of the connecting rod (302), and a plurality of brush heads (304) in contact with the surface of the filter cartridge (104) fixedly provided on the cleaning plate (303).

6. A bidirectional hydraulic filter according to claim 2, characterized in that, The rotating shaft (204) is provided with multiple sets of vibration components (400) inside the filter cylinder (104) for striking the side wall of the filter cylinder (104) to prevent the filter holes from clogging.

7. A bidirectional hydraulic filter according to claim 6, characterized in that, Each vibration assembly (400) includes: a turntable (401) fixedly sleeved on a rotating shaft (204) and located inside a filter cartridge (104), a limiting groove (403) is provided on the turntable (401), a fixed cylinder (404) is slidably provided in the limiting groove (403) via a fixed rod (407), a sliding rod (405) is slidably sleeved in the fixed cylinder (404), a striking plate (406) is fixedly provided at the top of the sliding rod (405) and contacts the inner sidewall of the filter cartridge (104), and a driving component is provided on the turntable (401) to drive the sliding rod (405) to slide back and forth.

8. A bidirectional hydraulic filter according to claim 7, characterized in that, The driving component includes: an arc-shaped sliding groove (402) on a turntable (401), the outer diameter of the sliding groove (402) being larger than the inner diameter, and a guide rod (408) slidingly disposed in the sliding groove (402), the guide rod (408) slidingly passing through the fixed cylinder (404) and fixedly connected to the side wall of the sliding rod (405), and a sliding guide groove (409) for the guide rod (408) to slide on the surface of the fixed cylinder (404).

9. A bidirectional hydraulic filter according to claim 1, characterized in that, The bottom surface of the housing (100) is detachably provided with a collection mechanism (500) for collecting impurities from cleaning and rinsing.

10. A bidirectional hydraulic filter according to claim 9, characterized in that, The collection mechanism (500) includes a collection trough (501) that is detachably mounted on the bottom surface of the housing (100) by bolts and communicates with the receiving cavity inside the housing (100), and a solenoid valve (502) is fixedly provided at the top of the collection trough (501).

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