阅读说明：本技术 一种高清洁性能液压油箱滤芯 (High-cleanness-performance hydraulic oil tank filter element ) 是由 刘德焕 于 2021-09-22 设计创作，主要内容包括：本发明涉及液压油箱清洁滤芯领域,具体是一种高清洁性能液压油箱滤芯,包括液压油箱,液压油箱一侧开设有油箱连通道,液压油箱外侧设置有一油箱连通器,油箱连通器与油箱连通道连通,液压油箱下端面两侧分别开设有一圆孔,每个圆孔内分别设置有一升杆,液压油箱下端面中部开设有通孔,通孔内设置有联动杆,联动杆与两侧的升杆固定连接,液压油箱上方安装有施压盖,施压盖上端面两侧分别开设有一螺纹孔,每个螺纹孔内分别安装有一施压螺钉,通过将滤芯与液压油箱进行联动设计,使得滤芯在取出更换后方便清理液压油箱内部的沉积杂质提高液压油箱使用寿命并能在更换完液压油滤芯后对内部环境进行二次清理进一步提高液压油箱的内部清洁度。(The invention relates to the field of cleaning filter elements of hydraulic oil tanks, in particular to a high-cleaning-performance filter element of a hydraulic oil tank, which comprises the hydraulic oil tank, wherein an oil tank communicating channel is formed in one side of the hydraulic oil tank, an oil tank communicating device is arranged on the outer side of the hydraulic oil tank and is communicated with the oil tank communicating channel, round holes are respectively formed in two sides of the lower end surface of the hydraulic oil tank, a lifting rod is respectively arranged in each round hole, a through hole is formed in the middle of the lower end surface of the hydraulic oil tank, a linkage rod is arranged in each through hole and is fixedly connected with the lifting rods on the two sides, a pressing cover is arranged above the hydraulic oil tank, threaded holes are respectively formed in two sides of the upper end surface of the pressing cover, a pressing screw is respectively arranged in each threaded hole, and the filter element and the hydraulic oil tank are in linkage design, so that deposited impurities in the hydraulic oil tank can be conveniently cleaned after the filter element is taken out and replaced, the service life of the hydraulic oil tank is prolonged, and the internal environment can be secondarily cleaned after the hydraulic oil filter element is replaced, and further improved The cleanliness of the interior.)

1. A high-cleanness hydraulic oil tank filter element comprises a hydraulic oil tank (10) and is characterized in that, an oil tank communicating channel (12) is arranged on one side of the hydraulic oil tank (10), an oil tank communicating vessel (11) is arranged on the outer side of the hydraulic oil tank (10), the oil tank communicating vessel (11) is communicated with the oil tank communicating channel (12), two sides of the lower end surface of the hydraulic oil tank (10) are respectively provided with a round hole, each round hole is internally provided with a lifting rod (24), a through hole is arranged in the middle of the lower end face of the hydraulic oil tank (10), a linkage rod (30) is arranged in the through hole, the linkage rod (30) is fixedly connected with the lifting rods (24) at two sides, a pressure applying cover (13) is arranged above the hydraulic oil tank (10), two sides of the upper end face of the pressing cover (13) are respectively provided with a threaded hole, and a pressing screw (14) is respectively arranged in each threaded hole.

2. The high-cleaning-performance hydraulic oil tank filter element according to claim 1, wherein a pressure spring (15) is arranged in the middle of the upper end face of the hydraulic oil tank (10), a two-stage stepped groove is formed below the pressure spring (15), a hydraulic oil filter element end cover (16) is arranged in the stepped groove, a hydraulic oil filter element (28) is arranged on the lower end face of the hydraulic oil filter element end cover (16), and a plurality of hydraulic oil filter holes (29) are formed in the circumferential array and the vertical linear array of the surface of the hydraulic oil filter element (28); the ladder face has been seted up in hydraulic oil filter core end cover (16) both sides hydraulic oil filter core (28), be provided with sealing washer (23) on the ladder face, hydraulic oil filter core end cover (16) up end middle part is provided with atress arch (19), the through-hole has been seted up to atress arch (19) inside, be provided with in the through-hole and carry hole (20), carry hole (20) both sides stretch out outside atress arch (19) and be fixed with carry ring (21).

3. The high-cleaning-performance hydraulic oil tank filter element as claimed in claim 2, wherein a counter bore is formed in each of two sides of the lifting hole (20) on the upper end surface of the hydraulic oil filter element end cover (16), a magnetic suction filter top ring (17) is arranged in each counter bore, a magnetic suction filter top ring (18) is fixed to the lower end surface of each magnetic suction filter top ring (17), and a magnetic suction filter ring (36) is fixed to the lower end surface of each magnetic suction filter top ring (18); a magnetic suction filter top ring gland (50) is arranged above each magnetic suction filter top ring (17), two magnetic suction filter top ring glands (50) are fixed outside the magnetic suction filter top ring (17) through magnetic suction filter top ring gland screws (51) installed on one side of the magnetic suction filter top ring, one side of each magnetic suction filter top ring gland (50) close to a stress bulge (19) is respectively provided with a sealing groove (46), one side of each hydraulic oil filter core end cover (16) far away from the sealing groove (46) outside the magnetic suction filter top ring (18) is respectively provided with a first sliding groove, two sliding grooves are respectively provided with a sealing slide block (43), one side of each sealing slide block (43) far away from the sealing groove (46) is respectively fixed with a sealing slide block rod (44), the outer side of each sealing slide block (44) is respectively sleeved with a sealing slide block spring (47), and second sliding grooves are respectively arranged below the two sealing slide blocks (43), every be provided with one in the second spout respectively and seal board (45), every seal and be fixed with a sealing plate pole (48) respectively behind board (45), every sealing plate pole (48) are equipped with one outward respectively and are sealed leaf spring (49), every sealing plate pole (48) and the slider pole (44) fixed connection that seals of top.

4. The high-cleanness hydraulic oil tank filter element as claimed in claim 1, wherein a screen cleaning chute (31) is formed in each of two sides of the upper end of the linkage rod (30) in the vertical direction, a screen cleaning inverted triangle slider spring (42) is respectively arranged on each of the inner and lower end faces of the screen cleaning chute (31), a screen cleaning inverted triangle slider (41) is fixed above each screen cleaning inverted triangle slider spring (42), and a screen cleaning inverted triangle block (32) is fixed at each end of each screen cleaning inverted triangle slider (41) extending out of the linkage rod (30).

5. The high-cleaning-performance hydraulic oil tank filter element according to claim 4, wherein a filter screen cleaning spring (34) is respectively fixed on the linkage rod (30) in the horizontal direction at two sides of the filter screen cleaning chute (31), a filter screen cleaning inclined plate (35) for cleaning is fixed at one end, away from the linkage rod (30), of each filter screen cleaning spring (34), and the filter screen cleaning inclined plate (35) is in sliding connection with the filter screen cleaning inverted triangular block (32).

6. The high-cleanness hydraulic oil tank filter element as claimed in claim 4, wherein the linkage rod (30) is fixed with a filter screen (40) at the outer side below a filter screen cleaning chute (31), stepped surfaces are formed at two ends of the filter screen (40), a corresponding magnetic suction filter ring (36) is arranged in each stepped surface, a second stepped surface is formed below each magnetic suction filter ring (36), a liquid blocking plate protrusion (37) is arranged in each second stepped surface, a liquid blocking plate (39) is fixed in the vertical direction of one end of each liquid blocking plate protrusion (37) extending out of the stepped surface, a liquid blocking plate spring (38) is fixed at the lower end of each liquid blocking plate (39), and the two liquid blocking plates (39) are respectively arranged at one end of the oil tank communication channel (12) close to the linkage rod (30).

7. The high-cleanness hydraulic oil tank filter element as claimed in claim 1, wherein the two lifting rods (24) penetrate through the hydraulic oil tank (10), a lifting rod sliding cavity (25) is formed in the hydraulic oil tank (10) in the vertical direction outside the two lifting rods (24), a lifting rod protrusion (26) is fixed outside each lifting rod (24), the two lifting rod protrusions (26) are arranged in the lifting rod sliding cavity (25), and a lifting rod spring (27) is fixed on the lower end surface of each lifting rod protrusion.

Technical Field

The invention belongs to the field of cleaning filter elements of hydraulic oil tanks, and particularly relates to a high-cleaning-performance filter element of a hydraulic oil tank.

Background

The hydraulic oil filter element is used for filtering solid particles and colloidal substances in a working medium and filtering various solid impurities mixed from the outside or generated inside in the operation of a system in the hydraulic system, can effectively control the pollution degree of the working medium, protects the normal operation of mechanical equipment, and is an indispensable part in a pipeline series for conveying the medium;

at present, hydraulic oil filter elements on the market generally do not have the secondary cleaning function after replacement, so that solid particles and the like are easily generated in the replacement process and enter a hydraulic oil tank to influence the service life of equipment.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a high-cleanness hydraulic oil tank filter element which can be used for discharging sediment in a hydraulic oil tank in the process of replacing a filter element at regular time and can be further cleaned after replacement.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a high cleaning performance hydraulic tank filter core, includes hydraulic tank, hydraulic tank one side has been seted up the oil tank intercommunication and has been said, and the hydraulic tank outside is provided with an oil tank linker, oil tank linker and oil tank intercommunication say the intercommunication, a round hole has been seted up respectively to hydraulic tank lower extreme face both sides, every be provided with a lifter in the round hole respectively, the through-hole has been seted up at the terminal surface middle part under the hydraulic tank, be provided with the gangbar in the through-hole, the lifter fixed connection of gangbar and both sides, hydraulic tank installs the gland of exerting pressure in the top, the gland of exerting pressure is seted up a screw hole respectively to the terminal surface both sides, every install a pressure screw in the screw hole respectively.

Preferably, a pressure spring is arranged in the middle of the upper end face of the hydraulic oil tank, two stages of stepped grooves are formed below the pressure spring, a hydraulic oil filter element end cover is arranged in each stepped groove, a hydraulic oil filter element is arranged on the lower end face of each hydraulic oil filter element end cover, and a plurality of hydraulic oil filter holes are formed in the circumferential array and the vertical linear array on the surface of each hydraulic oil filter element; the ladder face has been seted up in hydraulic oil filter core end cover in hydraulic oil filter core both sides, be provided with the sealing washer on the ladder face, hydraulic oil filter core end cover up end middle part is provided with the atress arch, the protruding inside through-hole of having seted up of atress, be provided with the hand-lifting hole in the through-hole, the hand-lifting hole both sides are stretched out the atress arch and are fixed with the bail outward.

Preferably, the upper end face of the hydraulic oil filter element end cover is respectively provided with a counter bore at two sides of the lifting hole, a magnetic suction filter top ring is respectively arranged in each counter bore, the lower end face of each magnetic suction filter top ring is respectively fixed with one, and a magnetic suction filter ring is respectively fixed on each lower end face; a magnetic suction filter top ring gland is respectively arranged above each magnetic suction filter top ring, two magnetic suction filter top ring glands are respectively fixed outside the magnetic suction filter top ring through magnetic suction filter top ring gland screws arranged on one side of the magnetic suction filter top ring gland, one side of each magnetic suction filter top ring gland, which is close to a stress bulge, is respectively provided with a sealing groove, one side of each hydraulic oil filter core end cover, which is far away from the sealing groove, is respectively provided with a first sliding groove, two sliding grooves are respectively provided with a sealing slide block, one side of each sealing slide block, which is far away from the sealing groove, is respectively fixed with a sealing slide block rod, the two sealing slide block rods are respectively sleeved with a sealing slide block spring, the lower parts of the two sealing slide blocks are respectively provided with a second sliding groove, each second sliding groove is respectively provided with a sealing plate, a sealing plate rod is respectively fixed behind each sealing plate, and each sealing plate rod is respectively sleeved with a sealing plate spring, each sealing plate rod is fixedly connected with the sealing slide block rod above the sealing plate rod.

Preferably, a clean spout of filter screen has been seted up respectively to the vertical direction in gangbar upper end both sides, every lower terminal surface is provided with a clean inverted triangle slider spring of filter screen respectively in the clean spout of filter screen, every the clean inverted triangle slider spring top of filter screen is fixed with a clean inverted triangle slider of filter screen, every the clean inverted triangle slider of filter screen stretches out the outer one end of gangbar and is fixed with a clean inverted triangle piece of filter screen respectively.

Preferably, the gangbar is fixed with a clean spring of filter screen respectively in the clean spout both sides horizontal direction of filter screen, every the clean spring of filter screen is kept away from gangbar one end and is fixed with a clean hang plate of filter screen that is used for the clearance, the clean hang plate of filter screen and the clean triangle-shaped sliding connection that falls of filter screen.

Preferably, the gangbar is fixed with a filter screen in the clean spout below outside of filter screen, the ladder face has been seted up at the filter screen both ends, every be provided with a corresponding magnetism respectively in the ladder face and inhale the filter ring, every inhale filter ring below and seted up second ladder face respectively, every be provided with one respectively in the second ladder face and hinder the liquid board arch, every it stretches out the vertical direction of outer one end of ladder face and is fixed with one and hinders the liquid board, every to hinder the liquid board lower extreme and be fixed with one respectively and hinder liquid board spring, two hinder the liquid board and set up respectively and say and be close to gangbar one end at the oil tank intercommunication.

Preferably, the two lifting rods penetrate through the hydraulic oil tank, a lifting rod sliding cavity is formed in the hydraulic oil tank in the vertical direction outside the two lifting rods, a lifting rod protrusion is fixed outside each lifting rod, the two lifting rod protrusions are arranged in the lifting rod sliding cavities, and a lifting rod spring is fixed on the lower end face of each lifting rod protrusion.

Advantageous effects

1. The characteristic that more impurities and sediments are in the hydraulic oil tank is utilized to arrange a filter screen in the hydraulic oil tank, and the process of taking out the filter element of the hydraulic oil tank is connected in parallel, so that the deposited impurities can be simultaneously taken out when the filter element of the hydraulic oil tank is replaced, and the service life of the hydraulic oil tank is prolonged;

2. after the filter element is replaced, the filter screen can be cleaned by the magnetic suction filter rings arranged on two sides of the filter screen and the inclined push plate arranged on the outer side of the linkage rod, and the filter screen is accumulated on the magnetic suction filter rings and taken out, so that the aim of further cleaning is fulfilled.

Drawings

FIG. 1 is a cross-sectional view of the left side view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at D;

FIG. 3 is an enlarged view of E in FIG. 1;

FIG. 4 is an enlarged view of FIG. 1 at F;

in the figure: a hydraulic oil tank 10, an oil tank communicating vessel 11, an oil tank communicating channel 12, a pressure cover 13, a pressure screw 14, a pressure spring 15, a hydraulic oil filter core end cover 16, a magnetic suction filter top ring 17, a stress bulge 19, a lifting hole 20, a lifting ring 21, a magnetic suction filter ring rod 22, a sealing ring 23, a lifting rod 24, a lifting rod sliding cavity 25, a lifting rod bulge 26, a lifting rod spring 27, a hydraulic oil filter core 28, a hydraulic oil filter hole 29, a linkage rod 30, a filter screen cleaning chute 31, a filter screen cleaning inverted triangle block 32, a filter screen cleaning spring 34, a filter screen cleaning inclined plate 35, a magnetic suction filter ring 36, a liquid baffle bulge 37, a liquid baffle spring 38, a liquid baffle plate 39, a filter screen 40, a filter screen cleaning inverted triangle slider 41, a filter screen cleaning inverted triangle slider spring 42, a sealing slider 43, a sealing slider rod 44, a sealing plate 45, a sealing groove 46, a sealing slider spring 47, a sealing plate rod 48, a sealing plate spring 49, a pressure spring 15, a pressure spring 17, a pressure spring, a pressure spring, a pressure spring, a pressure, a magnetic suction filter top ring gland 50 and a magnetic suction filter top ring gland screw 51.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

With reference to the attached drawing 1, a high-cleanness performance hydraulic oil tank filter core, including hydraulic oil tank 10, hydraulic oil tank 10 one side has been seted up oil tank intercommunication way 12, the hydraulic oil tank 10 outside is provided with an oil tank linker 11, oil tank linker 11 and oil tank intercommunication way 12 intercommunication, a round hole has been seted up respectively to terminal surface both sides under hydraulic oil tank 10, be provided with a lifter 24 in every round hole respectively, the through-hole has been seted up at terminal surface middle part under hydraulic oil tank 10, be provided with the gangbar 30 in the through-hole, 24 fixed connection of lifter of gangbar 30 and both sides, pressure applying lid 13 is installed to hydraulic oil tank 10 top, a screw hole has been seted up respectively to pressure applying lid 13 up end both sides, install a pressure applying screw 14 in every screw hole respectively.

Further referring to fig. 1, a pressure spring 15 is arranged in the middle of the upper end face of the hydraulic oil tank 10, two-stage stepped grooves are formed below the pressure spring 15, a hydraulic oil filter element end cover 16 is arranged in each stepped groove, a hydraulic oil filter element 28 is arranged on the lower end face of the hydraulic oil filter element end cover 16, and a plurality of hydraulic oil filter holes 29 are formed in the circumferential array and the vertical linear array on the surface of the hydraulic oil filter element 28; the hydraulic oil filter element end cover 16 is provided with stepped surfaces on two sides of a hydraulic oil filter element 28, a sealing ring 23 is arranged on the stepped surfaces, a stress bulge 19 is arranged in the middle of the upper end surface of the hydraulic oil filter element end cover 16, a through hole is formed in the stress bulge 19, a lifting hole 20 is formed in the through hole, and two sides of the lifting hole 20 extend out of the stress bulge 19 and are fixed with lifting rings 21.

Further, with reference to fig. 1 and fig. 2, counter bores are respectively formed in the upper end surface of the hydraulic oil filter element end cover 16 on both sides of the lifting hole 20, a magnetic suction filter top ring 17 is respectively arranged in each counter bore, a magnetic suction filter ring 18 is respectively fixed to the lower end surface of each magnetic suction filter top ring 17, and a magnetic suction filter ring 36 is respectively fixed to the lower end surface of each magnetic suction filter top ring 18; a magnetic suction filter top ring gland 50 is respectively arranged above each magnetic suction filter top ring 17, two magnetic suction filter top ring glands 50 are respectively fixed outside the magnetic suction filter top ring 17 through magnetic suction filter top ring gland screws 51 arranged on one side of each magnetic suction filter top ring gland 50, one side of each magnetic suction filter top ring gland outside the magnetic suction filter top ring 17, one side of each magnetic suction filter top ring gland outside the magnetic suction filter top ring 18, which is close to the stress bulge 19, is respectively provided with a sealing groove 46, a first sliding groove is respectively arranged on one side of each magnetic suction filter top ring end cover 16 outside the magnetic suction filter top ring 18, a sealing sliding block 43 is respectively arranged in the two sliding grooves, one side of each sealing sliding block 43, which is far from the sealing groove 46, is respectively fixed with a sealing sliding block rod 44, a sealing sliding block spring 47 is respectively sleeved outside the two sealing sliding block rods 44, second sliding grooves are respectively arranged below the two sealing sliding blocks 43, a sealing plate 45 is respectively sleeved inside each second sliding groove, a sealing plate 48 is respectively fixed behind each sealing plate 45, a sealing plate rod 49 is respectively outside each sealing plate rod 48, each closure plate bar 48 is fixedly connected to the upper closure slider bar 44.

Further, with reference to fig. 1 and 4, two filter screen cleaning chutes 31 are respectively formed in the vertical direction of two sides of the upper end of the linkage rod 30, a filter screen cleaning inverted triangle slider spring 42 is respectively arranged on the inner lower end face of each filter screen cleaning chute 31, a filter screen cleaning inverted triangle slider 41 is fixed above each filter screen cleaning inverted triangle slider spring 42, and a filter screen cleaning inverted triangle block 32 is respectively fixed at one end of each filter screen cleaning inverted triangle slider 41 extending out of the linkage rod 30.

Further referring to fig. 1, a screen cleaning spring 34 is fixed on the linkage rod 30 in the horizontal direction on each of the two sides of the screen cleaning chute 31, a screen cleaning inclined plate 35 for cleaning is fixed on one end of each screen cleaning spring 34 away from the linkage rod 30, and the screen cleaning inclined plate 35 is slidably connected with the screen cleaning inverted triangle block 32.

Further combine attached figure 1, attached figure 3, gangbar 30 is fixed with a filter screen 40 in the clean spout 31 below of filter screen outside, the ladder face has been seted up at filter screen 40 both ends, be provided with a corresponding magnetism in every ladder face and inhale filter ring 36 respectively, every magnetism is inhaled filter ring 36 below and has been seted up the second ladder face respectively, be provided with one respectively in every second ladder face and hinder liquid board arch 37, every hinders that liquid board arch 37 stretches out the vertical direction of the outer one end of ladder face and is fixed with one and hinders liquid board 39, every hinders liquid board 39 lower extreme and is fixed with one respectively and hinders liquid board spring 38, two hinder liquid board 39 and set up respectively and are close to gangbar 30 one end in oil tank intercommunication way 12.

Further, with reference to fig. 1, the two lifting rods 24 penetrate through the hydraulic oil tank 10, and a lifting rod sliding cavity 25 is respectively formed in the hydraulic oil tank 10 in the vertical direction outside the two lifting rods 24, a lifting rod protrusion 26 is respectively fixed outside each lifting rod 24, the two lifting rod protrusions 26 are arranged in the lifting rod sliding cavity 25, and a lifting rod spring 27 is respectively fixed on the lower end surface of each lifting rod protrusion 26.

Principle of operation

After the equipment using the hydraulic oil tank stops working, two pressure applying screws 14 positioned on two sides of the upper end of the pressure applying cover 13 are unscrewed, the pressure applying cover 13 is taken down, then a pressure applying spring 15 positioned above a hydraulic oil filter element end cover 16 is taken down, at the moment, the pressure of the hydraulic oil filter element end cover 16 disappears, and the hydraulic oil filter element end cover 16 can be taken out by pulling a lifting ring 21 arranged in the middle of the hydraulic oil filter element end cover 16;

the lifting rods 24 positioned below the two sides of the hydraulic oil filter element end cover 16 in the process of taking out the hydraulic oil filter element end cover 16 are bounced under the action of the lifting rod springs 27, at the same time, the hydraulic oil filter element 28 connected with the lower part of the hydraulic oil filter element end cover 16 is also taken out, the pressure acting on the upper end surface of the linkage rod 30 disappears, therefore, the linkage rod 30 is driven to rise under the action of the lifting rods 24 at the two sides, at the moment, the liquid blocking plate bulge 37 arranged at one side of the filter screen 40 loses the pressure of the magnetic suction filter ring 36, so that the pressure rises and finally the oil tank communicating channel 12 is closed, meanwhile, the filter screen 40 fixed on the outer side of the linkage rod 30 is driven to be lifted so as to filter and take out impurities deposited on the surface of the filter screen 40, and after the impurities are removed, the magnetic suction filter top ring gland screws 51 arranged on the two sides of the upper end surface of the hydraulic oil filter core end cover 16 are unscrewed so as to take out the fixed magnetic suction filter top ring gland 50, so that the hydraulic oil filter core 28 can be replaced after the magnetic suction filter top ring gland screws 18 are pulled out;

after the replacement of the hydraulic oil filter element 28 is completed, a worker presses the hydraulic oil filter element end cover 16 into the hydraulic oil tank, at the moment, the linkage rod 30 and the lifting rods 24 on the two sides sink under the action of the hydraulic oil filter element 28 and the hydraulic oil filter element end cover 16 respectively, meanwhile, the filter screen cleaning inverted triangle block 32 arranged on the outer side of the linkage rod 30 is pressed by the hydraulic oil filter element 28 to slide downwards to push out the filter screen cleaning inclined plate 35 on the outer side of the filter screen cleaning inverted triangle block 32 to perform secondary cleaning on the filter screen 40 and push impurities on the surface of the filter screen 40 onto the magnetic suction filter ring 36, and after the hydraulic oil filter element end cover 16 is pressed to the bottom, the magnetic suction filter ring 36 can be taken out through the magnetic suction filter top rings 17 on the two sides, so that the impurities which are not cleaned up are removed and the impurities generated by the replaced hydraulic oil filter element 28 are further improved in the hydraulic oil tank;

then, magnetic suction filtering top ring gland covers 50 are respectively covered above the two magnetic suction filtering top rings 17, magnetic suction filtering top ring gland screws 51 are used for fixing the magnetic suction filtering top ring gland covers 50, then a pressure spring 15 is placed in the middle of the upper surface of the hydraulic oil filter element end cover 16, a pressure applying cover 13 is covered above the pressure applying spring 15 and pressure applying screws 14 are screwed into threaded holes on two sides to apply pressure to the hydraulic oil filter element end cover 16, and filter element replacement is completed.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.