Hydraulic oil filter element and hydraulic equipment

Abstract

The utility model discloses a hydraulic oil filter element and hydraulic equipment. The hydraulic oil filter element comprises a plurality of filter discs which are stacked up and down, a first notch is formed in the edge of the outer ring of each filter disc, a positioning hole is formed in the center of each filter disc, and a second notch is formed in the edge of each positioning hole; the filter disc is provided with a first hollow area and a second hollow area, the edge of the first area is provided with a third notch extending towards the edge of the outer ring of the filter disc, and the edge of the second area is provided with a fourth notch extending towards the edge of the positioning hole; the two adjacent filter discs deflect by a preset angle, the first area is clamped by the non-hollowed-out areas on the two vertically adjacent filter discs to form a dirt containing cavity, and the third notch is communicated with the first notch of the adjacent filter disc and used for allowing dirty oil to enter the dirt containing cavity; the second area is clamped by the non-hollowed-out areas on the two adjacent filter discs to form an outlet cavity, and the fourth notch is communicated with the second notch of the adjacent filter disc and used for allowing filtered clean oil to flow out of the filter element.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid filtering and separation, in particular to a hydraulic oil filter element and hydraulic equipment. Background Art

[0002] Fluid filtration and separation technology is currently widely used, and is commonly used in the filtration of petrochemical raw materials, the purification of hydraulic oil in engineering machinery, and the filtration of lubricating oil in industrial hydraulic systems. Separation technology is a mechanical operation for the purpose of separation. Filtration separation technology uses porous media as the separation interface and uses the pressure difference on both sides of the separation interface to capture or intercept solid particles in the fluid upstream. After the fluid passes through the porous medium, various mechanical impurities and solid particles are removed and the fluid becomes clean. Hydraulic oil filter element is a typical fluid filtration product.

[0003] The existing hydraulic oil filter element adopts the folded filter material method, which combines multiple layers of different filter materials and uses a special filter material folding machine to fold them into a suitable height and shape, thereby improving the structural strength and crush resistance of the filter layer, so that the finished hydraulic oil filter element can withstand the pressure difference under working conditions without deformation or damage.

[0004] Under some working conditions, the hydraulic system has high requirements for oil cleanliness index, and the filter element needs to be replaced regularly, which has high maintenance costs. Under other working conditions, hydraulic equipment must run continuously for a long time, and it is inconvenient to replace the hydraulic oil filter element. The hydraulic equipment may fail due to oil contamination. The existing hydraulic oil filter element cannot meet the filtering requirements under the above working conditions.

[0005] Therefore, it is necessary to propose a hydraulic oil filter element with large dirt holding capacity and high oil cleanliness to extend the service life of the oil, avoid failures of hydraulic equipment caused by oil contamination, improve the reliability of mechanical equipment, and reduce the use and maintenance costs of the equipment. Utility Model Content

[0006] The utility model provides a hydraulic oil filter element, which prolongs the service life of oil and is suitable for working conditions where hydraulic equipment must operate continuously for a long time, thereby avoiding failure of hydraulic equipment due to oil contamination, improving the reliability of mechanical equipment and reducing the use and maintenance costs of equipment.

[0007] In order to solve the above problems, the utility model is implemented through the following technical solutions:

[0008] In a first aspect, the utility model provides a hydraulic oil filter element, comprising a plurality of filter discs stacked up and down, wherein a first notch is provided at the outer edge of the filter disc, a positioning hole is provided at the center of the filter disc, and a second notch is provided at the edge of the positioning hole; a hollow first area and a second area are provided on the filter disc, a third notch extending toward the outer edge of the filter disc is provided at the edge of the second area, and a fourth notch extending toward the edge of the positioning hole is provided at the edge of the second area;

[0009] Among them, the two adjacent filter discs are deflected by a preset angle, the first area is clamped by the non-hollowed areas on the two upper and lower adjacent filter discs to form a dirt receiving cavity, and the third notch is connected to the first notch of the adjacent filter disc to allow dirty oil to enter the dirt receiving cavity; the second area is clamped by the non-hollowed areas on the two adjacent filter discs to form an outlet cavity, and the fourth notch is connected to the second notch of the adjacent filter disc to allow clean oil after filtration to flow out of the filter element.

[0010] Optionally, the number of first areas on the filter plate is greater than the number of second areas.

[0011] Optionally, the number of the second areas on the filter plate includes two, and the two second areas are distributed up and down on the filter plate around the positioning hole; the number of the first areas includes four, and the four first areas are evenly distributed in pairs on the left and right sides of the filter plate around the positioning hole.

[0012] Optionally, the number of the second notches includes two, and the two second notches are horizontally distributed on the left and right edges of the positioning hole.

[0013] Optionally, the number of the first notches includes eight, wherein two of the first notches are arranged on the outer ring edges outside the two second areas, and the other six of the first notches are arranged on the outer ring edges of the non-hollowed-out areas on the filter plate.

[0014] Optionally, the number of the second notches includes six, the six second notches are evenly distributed around the positioning hole, and the six second notches extend toward the non-hollowed-out area on the filter plate.

[0015] Optionally, the hydraulic oil filter element further includes:

[0016] A cylindrical support member, wherein the cylindrical support member is used to pass through the positioning hole on the filter element, and a plurality of through holes are provided on the cylindrical support member, and the through holes are used to allow the clean oil flowing out of the second notch to flow into the interior of the cylindrical support member.

[0017] Optionally, the hydraulic oil filter element further includes:

[0018] An upper pad, wherein an upper positioning groove is provided at the center of the upper pad for the cylindrical support member to pass through, and the upper pad is used to provide an upper end sealing surface of the filter element body formed by a plurality of filter discs stacked up and down;

[0019] A lower pad, wherein a lower positioning groove for the cylindrical support member to pass through is formed at the center of the lower pad, and the lower pad is used to provide a sealing surface at the lower end of the filter element body;

[0020] Two pull rods are used to fix the axial dimension of the filter element body through two upper clamping grooves arranged on the upper pad and two lower clamping grooves arranged on the lower pad.

[0021] Optionally, the hydraulic oil filter element further includes:

[0022] Two handle screws are arranged on the upper pad, and the handle screws are provided with radially penetrating through holes;

[0023] The two ends of the handle respectively pass through the through holes of the two handle screws to achieve fixed connection.

[0024] In a second aspect, the utility model further provides a hydraulic device, comprising the hydraulic oil filter element described above.

[0025] The utility model provides a hydraulic oil filter element, comprising a plurality of filter discs stacked up and down, wherein a first notch is provided at the outer edge of the filter disc, a positioning hole is provided at the center of the filter disc, and a second notch is provided at the edge of the positioning hole; a hollow first area and a second area are provided on the filter disc, a third notch extending toward the outer edge of the filter disc is provided at the edge of the first area, and a fourth notch extending toward the edge of the positioning hole is provided at the edge of the second area; wherein two adjacent filter discs are deflected at a preset angle, the first area is clamped by the non-hollowed areas on the two upper and lower adjacent filter discs to form a dirt receiving cavity, the third notch is communicated with the first notch of the adjacent filter disc to allow dirty oil to enter the dirt receiving cavity; the second area is clamped by the non-hollowed areas on the two adjacent filter discs to form an outlet cavity, the fourth notch is communicated with the second notch of the adjacent filter disc to allow clean oil after filtration to flow out of the filter element. The hydraulic oil filter element provided by the utility model has a high dirt holding capacity by providing a dirt holding cavity and an outlet cavity, can be suitable for working conditions where hydraulic equipment must operate continuously for a long time, and prolongs the service life of the oil. At the same time, multiple filter discs are stacked up and down, which have a high cleaning ability for the oil, prolong the service life of the oil, avoid failures of hydraulic equipment caused by oil contamination, improve the reliability of mechanical equipment, and reduce the use and maintenance costs of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the filter structure in a hydraulic oil filter element according to an embodiment of the utility model;

[0028] Figure 2 For two pieces Figure 1 A schematic diagram of the structure of the filter discs stacked up and down;

[0029] Figure 3 This is an exploded schematic diagram of a hydraulic oil filter element according to an embodiment of the utility model;

[0030] Figure 4 for Figure 3 The assembly diagram of the hydraulic oil filter element is shown.

[0031] Description of reference numerals:

[0032] 10-filter element body;

[0033] 100-filter disc; 101-first notch; 110-positioning hole; 111-second notch; 120-first area; 121-third notch; 122-dirt receiving cavity; 130-second area; 131-fourth notch; 132-outlet cavity;

[0034] 20 - cylindrical support; 30 - upper pad; 31 - upper positioning groove; 32 - upper clamping groove; 40 - lower pad; 41 - lower positioning groove; 42 - lower clamping groove; 50 - pull rod; 61 - handle screw; 62 - handle.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The hydraulic oil filter element and hydraulic equipment proposed in the utility model are further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] In the description of the present invention, it should be understood that the terms "center", "height", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] See also Figure 1 , Figure 2 , Figure 1 This is a schematic diagram of the filter structure in a hydraulic oil filter element according to an embodiment of the utility model. Figure 2 For two pieces Figure 1 The hydraulic oil filter element provided in this embodiment includes a plurality of filter discs stacked up and down. Figure 1 The filter disc 100 shown in the figure has a positioning hole 110 in the center thereof, and the positioning hole 110 is used to install a support member to maintain the axial stability of the multiple filter discs 100 stacked up and down; the filter disc 100 is provided with a hollow first area 120 and a second area 130, and the edge of the first area 120 is provided with a third notch 121 extending toward the outer edge of the filter disc 100, and the edge of the second area 130 is provided with a fourth notch 131 extending toward the edge of the positioning hole 110; the outer edge of the filter disc 100 is provided with a first notch 101, and the edge of the positioning hole 110 is provided with a second notch 111;

[0042] Among them, among the multiple filter discs 100 stacked up and down, two adjacent filter discs 100 are deflected at a preset angle, so that the first area 120 is clamped by the non-hollowed areas on the two adjacent filter discs 100 to form a dirt-receiving cavity 122, and the third notch 121 is connected with the first notch 101 on the adjacent filter disc 100, so that the dirty oil can enter the dirt-receiving cavity 122 through the first notch 101, and the dirty oil is filtered, and the pollutants and impurities in the dirty oil will be collected in the dirt-receiving cavity 122; the second area 130 is clamped by the non-hollowed areas on the two adjacent filter discs 100 to form an outlet cavity 132, and the fourth notch 131 is connected with the second notch 111 on the adjacent filter disc 100, and the clean oil after filtration will gather in the outlet cavity 132, and then flow out of the filter element through the fourth notch 131 and the second notch 111.

[0043] It should be noted that the extension directions of the first notch 101 and the third notch 121 on the filter disc should be staggered so that the third notch 121 can be connected with the first notch 101 on the adjacent filter disc 100 by deflecting the adjacent filter disc 100; similarly, the second notch 111 and the fourth notch 131 on the filter disc 100 also need to be staggered.

[0044] In the above embodiment, it should be noted that the hollowed-out shapes of the first area 120 and the second area 130 are not specifically limited, and may be apple-shaped, square, rectangular, diamond-shaped, circular, or may be hollowed out into other regular shapes.

[0045] In the above embodiment, the first area 120 and the second area 130 are provided on the filter 100, and the third notch 121 extending toward the outer edge of the filter 100 is provided on the first area 120, and the fourth notch 131 extending toward the positioning hole 110 is provided in the second area 130, and the deflection angle between the two adjacent filter discs 100 is set to be preset, so that the first area 120 is clamped by the non-hollowed areas of the two upper and lower adjacent filter discs 100 to form a dirt receiving cavity 122, and the third notch 121 and the adjacent filter discs 100 are connected. 0 is connected, dirty oil can pass through the first gap 101 and the third gap 131 in turn, enter the dirt receiving cavity 122, the dirty oil is filtered, and the pollutants and impurities are collected in the dirt receiving cavity 122; the second area 130 is clamped by the non-hollowed areas of the two adjacent filter discs 100 above and below to form an outlet cavity 132, and the fourth gap 131 is connected with the second gap 111 on the adjacent filter disc 100, and the clean oil gathered in the outlet cavity 132 passes through the fourth gap 131 and the second gap 111 in turn to flow out of the filter element. The hydraulic oil filter element of this embodiment has good cleaning ability and a large dirt holding capacity, which can extend the service life of the oil, is suitable for working scenarios where the equipment must be continuously operated for a long time, can avoid equipment failures caused by oil contamination problems, improve the reliability of mechanical equipment, and reduce the use and maintenance costs of the equipment.

[0046] In some embodiments, see the attached Figure 1-2 , the number of the second regions 130 on the filter 100 includes two, and the two second regions 130 are distributed up and down on the filter 100 around the positioning hole 110. In other embodiments, the number of the second regions 130 can also be set to other numbers, such as three or four, which is not specifically limited here. For example, when the number of the second regions 130 is three, three second regions 130 can be set to be evenly distributed around the positioning hole 110.

[0047] In the above embodiment, only two second areas 130 are set, that is, after multiple filter discs 100 are stacked, the filter disc 100 will form two outlet cavities 132 due to the coverage of the non-hollowed-out areas on the two upper and lower adjacent filter discs 100, and more space can be reserved to hollow out more first areas 120 on the filter disc 100, which can keep the filter disc 100 covered by the non-hollowed-out areas on the two upper and lower adjacent filter discs 100 to form more dirt-receiving cavities 122, thereby improving the dirt-receiving capacity of the hydraulic oil filter element proposed in the utility model and having higher cleaning ability.

[0048] In the above embodiment, the number of second notches 111 is two, and the two second notches 111 are horizontally distributed on the edge of the positioning hole 110, one on the left and one on the right. In the process of stacking multiple filter discs 100 up and down, the deflection angle of two adjacent filter discs 100 is set to 90 degrees. Since the two second areas 130 are arranged one on top and one on the bottom around the positioning hole 110, and the two second notches 111 are arranged one on the left and one on the right around the positioning hole 110, the fourth notch 131 on the second area 130 can be connected with the second notch 111 of the adjacent filter disc 100, and the clean oil collected in the outlet cavity 132 can flow out of the filter element through the fourth notch 131 and the second notch 111 in sequence. In other embodiments, the number of second notches 111 can be set to other numbers, and the distribution of the second notches 111 is set correspondingly according to the distribution of the second areas 130, so that the fourth notch 131 can be connected with the second notch 111 by deflecting the adjacent filter discs 100.

[0049] In the above embodiment, the number of the second notches 111 can also be set to six, and only two of the six second notches 111 need to be set around the positioning hole 110, one on the left and one on the right. In addition to the two second notches 111, the other four second notches 111 can be used as permeation outlets, and the filtered clean oil can permeate out of the filter element from the other four second notches 111. It should be noted that the six second notches 111 extend toward the non-hollowed-out area on the filter disc 100, so that the second notches 111 can be connected to the fourth notch 131 by setting the deflection angle between adjacent filter discs 100.

[0050] In some embodiments, the number of the first regions 120 includes four, and the four first regions 120 are evenly distributed in pairs on the left and right sides of the filter disc 100 around the positioning hole 110. The number of the first regions 120 is set to be higher than that of the second regions 130, that is, in the stacked filter element, the number of the dirt-receiving cavities 122 is greater than that of the outlet cavities 132, so that the hydraulic oil filter element of the utility model has a higher dirt-receiving capacity.

[0051] In the above embodiment, the number of the first regions 120 may also be set to another even number, as long as they are evenly distributed around the positioning hole 110 on the left and right sides of the filter 100 .

[0052] In other embodiments, the number of first areas 120 may be set to other numbers. For example, if the number of second areas 130 is set to three, the number of first areas 130 may also be set to three, and the first areas 120 and the second areas 130 may be alternately arranged around the positioning hole 100 .

[0053] In the above embodiment, the number of the first notches 101 can be eight, wherein two first notches 101 are arranged on the outer edge of the outer side of the second area 130, and the other six first notches 101 are arranged on the outer edge of the non-hollowed-out area of ​​the filter 100. Figure 1 , wherein two first areas 120 are evenly distributed on the left side of the filter disc 100, and the other two first areas 120 are evenly distributed on the right side of the filter disc 100, and together with the two second areas 130, they constitute six hollow areas evenly distributed on the filter disc 100, wherein the angle between any two adjacent hollow areas is 60 degrees, and the number of first notches set on the outer edge of the non-hollowed area on the filter disc 100 is six, and the angle between two adjacent ones of the six first notches 101 is 60 degrees. In the process of stacking multiple filter discs 100, the deflection angle of adjacent filter discs 100 is 90 degrees, wherein the four first notches 101 are connected to the third notches 121 of the four first areas 120 of the adjacent filter disc 100. In other embodiments, the number and distribution of the first notches 101 can be set accordingly according to the number and distribution of the first areas 120, so that the adjacent filter discs 100 can achieve the connection between the first notch 101 and the third notch 121 after a certain deflection angle.

[0054] It should be noted that, in the above embodiment, among the eight first notches 101, not all of the first notches 101 are connected to the third notches 131 on the adjacent filter disc 100. Among them, except for the four first notches 101 used to communicate with the third notches 121 of the adjacent filter disc 100, the other four first notches 101 (i.e., the first notches 101 in the four directions of up, down, left and right) also have at least two specific functions: 1. Dirty oil can penetrate and filter into the clean outlet cavity 132; 2. In the filter element main body 10 formed by stacking multiple filter discs 100 up and down, a through groove composed of the first notches 101 of the filter disc 100 will be formed on the side, which can be used to install the support component.

[0055] In the above embodiment, the preset deflection angle of two adjacent filters 100 is 90 degrees. In other embodiments, the deflection angle can be set accordingly according to the distribution of the first area 120 (or the second area 130), which is not specifically limited here.

[0056] See also Figure 3 , Figure 4 , Figure 3 This is an exploded schematic diagram of a hydraulic oil filter element according to an embodiment of the utility model. Figure 4 for Figure 3 In some embodiments, the hydraulic oil filter element provided by the utility model further includes: a cylindrical support member 20, the cylindrical support member 20 is used to pass through the positioning hole 110 on the filter element, and the cylindrical support member 20 is provided with a plurality of through holes, and the through holes are used to allow the clean oil flowing out of the second notch 111 to flow into the inside of the cylindrical support member 20.

[0057] In the above embodiment, a cylindrical support member 20 is provided to axially fix the filter element, thereby improving the structural strength of the hydraulic oil filter element to adapt to the pressure difference in the working environment.

[0058] In some embodiments, the cylindrical support member 20 can be formed by rolling and welding a perforated plate.

[0059] In some embodiments, the hydraulic oil filter element of the utility model further includes:

[0060] An upper pad 30, wherein an upper positioning groove 31 for the cylindrical support member 20 to pass through is formed in the center of the upper pad 30, and the upper pad 30 is used to provide an upper end sealing surface of the filter element body 10 formed by a plurality of filter discs 100 stacked up and down;

[0061] A lower pad 40, wherein a lower positioning groove 41 for the cylindrical support member 20 to pass through is formed in the center of the lower pad 40, and the lower pad 40 is used to provide a sealing surface at the lower end of the filter element body 10;

[0062] The two tie rods 50 fix the axial dimension of the filter element body 10 through the two upper clamping grooves 32 provided on the upper pad 30 and the two lower clamping grooves 42 provided on the lower pad 40 .

[0063] In some embodiments, the hydraulic oil filter element provided by the utility model further includes:

[0064] Two handle screws 61 are provided on the upper pad 30, and the handle screws 61 are provided with radially penetrating through holes;

[0065] The handle 62 has two ends which pass through the through holes of the two handle screws 61 to achieve fixed connection.

[0066] In some embodiments, the hydraulic oil filter element provided by the utility model further includes:

[0067] An upper flat washer bonded to the upper pad 30;

[0068] The lower flat washer bonded to the lower pad 40.

[0069] In some embodiments, the filter 100 is made of plant wood pulp fiber paper or composite chemical fiber. The plant wood pulp fiber paper has a water-absorbing effect and can meet the working scenarios where some hydraulic equipment has requirements for the water content index of the oil.

[0070] The thickness of the filter disc 100 may be from 0.1 mm to 10 mm, and the diameter of the filter disc 100 may be from 50 mm to 500 mm, which are not specifically limited herein.

[0071] The utility model also provides a hydraulic device, comprising the hydraulic oil filter element described in the above embodiment. The hydraulic oil filter element has strong cleaning ability and large dirt holding capacity, can extend the service life of the oil in the hydraulic device, avoid failures of the hydraulic device caused by oil contamination, improve the reliability of the mechanical device, do not need to frequently replace the hydraulic oil filter element, and reduce the use and maintenance cost of the equipment.

[0072] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A hydraulic oil filter element, characterized in that: include: A plurality of filter discs stacked up and down, wherein the outer edge of the filter disc is provided with a first notch, the center of the filter disc is provided with a positioning hole, and the edge of the positioning hole is provided with a second notch; the filter disc is provided with a hollow first area and a second area, the edge of the first area is provided with a third notch extending toward the outer edge of the filter disc, and the edge of the second area is provided with a fourth notch extending toward the edge of the positioning hole; Among them, the two adjacent filter discs are deflected by a preset angle, the first area is clamped by the non-hollowed areas on the two upper and lower adjacent filter discs to form a dirt receiving cavity, and the third notch is connected to the first notch of the adjacent filter disc to allow dirty oil to enter the dirt receiving cavity; the second area is clamped by the non-hollowed areas on the two adjacent filter discs to form an outlet cavity, and the fourth notch is connected to the second notch of the adjacent filter disc to allow clean oil after filtration to flow out of the filter element.

2. The hydraulic oil filter element according to claim 1, characterized in that: The number of the first regions on the filter is greater than the number of the second regions.

3. The hydraulic oil filter element according to claim 2, characterized in that: The number of the second areas on the filter plate includes two, and the two second areas are distributed up and down on the filter plate around the positioning hole; the number of the first areas includes four, and the four first areas are evenly distributed in pairs on the left and right sides of the filter plate around the positioning hole.

4. The hydraulic oil filter element according to claim 3, characterized in that: The number of the second notches includes two, and the two second notches are horizontally distributed on the left and right edges of the positioning hole.

5. The hydraulic oil filter element according to claim 3, characterized in that: The number of the first notches includes eight, wherein two of the first notches are arranged on the outer ring edges outside the two second areas, and the other six of the first notches are arranged on the outer ring edges of the non-hollowed-out areas on the filter plate.

6. The hydraulic oil filter element according to claim 5, characterized in that: The number of the second notches includes six, the six second notches are evenly distributed around the positioning hole, and the six second notches extend toward the non-hollowed-out area on the filter plate.

7. The hydraulic oil filter element according to claim 5, characterized in that: The hydraulic oil filter element also includes: A cylindrical support member, wherein the cylindrical support member is used to pass through the positioning hole on the filter element, and a plurality of through holes are provided on the cylindrical support member, and the through holes are used to allow the clean oil flowing out of the second notch to flow into the interior of the cylindrical support member.

8. The hydraulic oil filter element according to claim 7, characterized in that: The hydraulic oil filter element also includes: An upper pad, wherein an upper positioning groove is provided at the center of the upper pad for the cylindrical support member to pass through, and the upper pad is used to provide an upper end sealing surface of the filter element body formed by a plurality of filter discs stacked up and down; A lower pad, wherein a lower positioning groove for the cylindrical support member to pass through is formed at the center of the lower pad, and the lower pad is used to provide a sealing surface at the lower end of the filter element body; Two pull rods are used to fix the axial dimension of the filter element body through two upper clamping grooves arranged on the upper pad and two lower clamping grooves arranged on the lower pad.

9. The hydraulic oil filter element according to claim 8, characterized in that: The hydraulic oil filter element also includes: Two handle screws are arranged on the upper pad, and the handle screws are provided with radially penetrating through holes; The two ends of the handle respectively pass through the through holes of the two handle screws to achieve fixed connection.

10. A hydraulic device, characterized in that: It comprises the hydraulic oil filter element as claimed in any one of claims 1 to 9.

Images