Oil filtering device and filter element thereof

Abstract

The invention discloses a filter element for an oil filtering device, which comprises a circular upper flange and a circular lower flange, a plurality of layers of filter element laminations are laminated between the upper flange and the lower flange, and the upper flange and the lower flange are both provided with a plurality of unthreaded holes and flange holes. A plurality of connecting rods penetrating through the unthreaded holes are connected with the upper flange and the lower flange, and the lower flange is movably arranged on the connecting rods; a plurality of round liquid outlet holes are formed in the filter element lamination in an array manner, a star-shaped liquid inlet hole is formed between every four liquid outlet holes, and each liquid inlet hole comprises four arc-shaped edges parallel to the edges of the adjacent liquid outlet holes; the upper flange is provided with a circular liquid outlet corresponding to the liquid outlet hole, the diameter of the liquid outlet is larger than or equal to that of the liquid outlet hole, and the lower flange is provided with a liquid inlet corresponding to the liquid inlet hole, and the shape of the liquid inlet hole is consistent with that of the liquid inlet hole. The invention has the beneficial effects that the liquid inlet of the lower flange is consistent with the liquid inlet of the filter element in shape, so that the liquid inlet amount and the service life of the filter element are optimal; secondly, through the threaded hole, the filter element can be conveniently ejected out of the filter tank by using a screw rod, so that the maintenance efficiency is improved; the pressure spring is integrated into the filter element assembly, so that the integration of the module is improved, and the assembly and maintenance are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of oil filtration, and in particular to an oil filtration device and a filter element thereof. Background Art

[0002] In prior application No. 2015203874322, the inventor proposed a filter element structure with several circular holes forming the liquid outlets, with diamond-shaped holes positioned between the circular holes as the liquid inlet. Compared to conventional structures with circular holes for both the inlet and outlet, this structure significantly reduces the blank area, improves the utilization rate of the filter element area, and enhances filtration performance. However, the lower flange still uses a circular hole structure, with the circular holes corresponding to the liquid inlet holes to achieve liquid inlet. Because the circular holes and the liquid inlet holes are not the same shape, if the circular holes are too large, liquid inlet will impact the edges of the filter element laminations, reducing the filter element's service life. If the circular holes are too small, they will block the liquid inlet holes, thereby reducing the amount of liquid entering and reducing filtration efficiency. Furthermore, during use, it was discovered that the filter element was easily adsorbed by liquid residue during maintenance, making it difficult to remove from the filter tank. Furthermore, during assembly, the compression spring was separately placed within the tank body before the filter element was placed, resulting in inefficient overall assembly. Summary of the Invention

[0003] The object of the present invention is to provide a multi-tank combination structure for oil filtration that solves or partially solves the above technical problems.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A filter element for an oil filtering device, comprising a circular upper flange and a lower flange, wherein several layers of filter element laminations are stacked between the upper flange and the lower flange, and the upper flange and the lower flange are both provided with several light holes and flange holes, and several connecting rods passing through the light holes connect the upper flange and the lower flange, and the lower flange is movably provided on the connecting rods; a plurality of circular liquid outlet holes are arranged in an array on the filter element laminations, and a star-shaped liquid inlet hole is arranged between every four liquid outlet holes, and the liquid inlet holes each include four arc-shaped edges parallel to the edges of adjacent liquid outlet holes; the upper flange is provided with a circular liquid outlet corresponding to the liquid outlet hole, and the diameter of the liquid outlet is greater than or equal to the diameter of the liquid outlet hole, and the lower flange is provided with a liquid inlet consistent with the shape of the liquid inlet hole corresponding to the liquid inlet hole.

[0006] Preferably, a plurality of threaded holes for separation are provided on the upper flange at intervals, and the threaded holes and the flange holes are evenly distributed on the same circle.

[0007] Preferably, it further comprises a base, a receiving groove is provided at the center of the base, a compression spring is provided in the receiving groove, the compression spring rests between the base and the lower flange, and the base is connected to the connecting rod.

[0008] Preferably, both ends of the connecting rod are provided with threaded portions, and a smooth rod portion is provided between the two threaded portions. A smooth hole is also provided on the base corresponding to the connecting rod. The connecting rod passes through the smooth holes of the upper flange, lower flange and base, and is threadedly connected with a nut on the outside, thereby connecting the upper flange, lower flange and base.

[0009] Preferably, an annular sealing groove for accommodating a sealing ring is provided on the upper end surface of the upper flange.

[0010] Preferably, four connecting rods are included, and receiving grooves are provided on the filter element corresponding to the connecting rods.

[0011] Preferably, the filter element is made of or is made of a synthetic material specifically used for solid-liquid separation.

[0012] The present invention also provides an oil filtering device, which comprises a tank body, in which the filter element is arranged.

[0013] The beneficial effects of the present invention are: the liquid inlet of the lower flange is consistent in shape with the liquid inlet hole of the filter element, thereby ensuring the optimal liquid inlet volume and filter paper life; secondly, through the threaded hole, it is convenient to use a screw to push the filter element out of the filter tank, thereby improving maintenance efficiency; the compression spring is integrated into the filter element, which improves the integration of the module and facilitates assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0015] Figure 2 is a front view structural diagram of the first embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the front view of the upper flange;

[0017] Figure 4 This is a schematic diagram of the front view of the lower flange;

[0018] Figure 5 It is a schematic diagram of the front view structure of the filter chip. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "inside", "outside", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0021] like Figures 1 to 5 As shown, a filter element for an oil filter device according to the present invention includes a circular upper flange 10 and a lower flange 12. Each of the upper flange 10 and the lower flange 12 is provided with four clear holes 14 (i.e., through holes without threads on the inside) for connection, as well as flange holes 40. Four connecting rods 16 extending through the clear holes 14 connect the upper flange 10 and the lower flange 12 and ensure that the lower flange 12 is movably mounted on the connecting rods 16.

[0022] Several layers of filter element laminates 18 are stacked between the upper flange 10 and the lower flange 12. Several circular liquid outlet holes 20 are arranged in an array on the filter element 18. A star-shaped liquid inlet hole 22 is arranged between every four liquid outlet holes 20. The liquid inlet holes 22 include four arc-shaped edges parallel to the edges of adjacent liquid outlet holes 20; the upper flange 10 is provided with a circular liquid outlet 24 corresponding to the liquid outlet hole 20, and the diameter of the liquid outlet 24 is greater than or equal to the diameter of the liquid outlet hole 20; the lower flange 12 is provided with a liquid inlet 26 with the same shape as the liquid inlet hole 22 corresponding to the liquid inlet hole 22.

[0023] The filter element 12 further includes a base 28 having a receiving groove 30 at its center. A compression spring 32 is disposed within the receiving groove 30, and the compression spring 32 rests between the base 28 and the lower flange 12. The connecting rod 16 has threaded portions 34 at both ends, with a smooth rod portion (not shown) between the two threaded portions 34. A smooth hole 14 is also provided on the base 28 corresponding to the connecting rod 16. The connecting rod 16 passes through the smooth hole 14 of the upper flange 10, the lower flange 12, and the base 28, and is threadedly connected to a nut 36 on the outside, thereby connecting the upper flange 10, the lower flange 12, and the base 28. This allows the compression spring 32 to rest against the lower flange 12, thereby squeezing the filter element stack 18. During filtering, the compression spring 32 limits the downward movement of the lower flange 12, so that the filter element stack 18 can be compressed and tightened, thereby preventing solid impurities from passing through between the filter element stacks 18, while the oil can pass through between the filter element stacks, that is, from the liquid inlet hole 22 into the liquid outlet hole 20 to achieve filtration.

[0024] Furthermore, four threaded holes 38 for separation are spaced apart on the upper flange 10. These holes are evenly distributed on the same circle as the flange holes 40 on the upper flange 10. This prevents the filter element from being easily separated due to the adsorption of liquid residue when it is pulled out of the tank. In this case, a screw can be threaded into the threaded holes 38 and rotated until the front end of the screw rests against the tank, squeezing the tank and separating the filter element, thereby improving maintenance efficiency.

[0025] Furthermore, an annular sealing groove 42 for accommodating a sealing ring is provided on the upper end surface of the upper flange 10 so that when the filter element is fixed to the tank body by bolts passing through the flange holes 40, the sealing ring is squeezed against the tank body to form a seal.

[0026] A receiving groove 30 is provided on the filter element stack 18 corresponding to the connecting rod 16 .

[0027] The filter element stack 18 is made of a synthetic material specifically designed for solid-liquid separation, which effectively increases the service life of the filter element 18 and allows for water filtration. Alternatively, it can be made of paper or plastic. The synthetic material can be waterproof or oil-proof, and there is extensive research on this topic, so it can be used appropriately.

[0028] The present invention further provides an oil filtering device (not shown), which includes a tank body with a filter element disposed therein.

[0029] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A filter element for an oil filter device, comprising a circular upper flange and a lower flange, with a plurality of filter chips stacked between the upper and lower flanges, characterized in that: The upper flange and the lower flange are both provided with a plurality of light holes and flange holes, and a plurality of connecting rods passing through the light holes connect the upper flange and the lower flange, and the lower flange is movably provided on the connecting rods; a plurality of circular liquid outlet holes are arrayed on the filter chip, and a star-shaped liquid inlet hole is provided between every four liquid outlet holes, and the liquid inlet holes include four arc-shaped edges parallel to the edges of adjacent liquid outlet holes; the upper flange is provided with a circular liquid outlet corresponding to the liquid outlet hole, and the diameter of the liquid outlet is greater than or equal to the diameter of the liquid outlet hole, and the lower flange is provided with a liquid inlet consistent with the shape of the liquid inlet hole corresponding to the liquid inlet hole.

2. The filter element for an oil filtering device according to claim 1, characterized in that: The upper flange is provided with a plurality of threaded holes for separation at intervals, and the threaded holes and the flange holes are evenly distributed on the same circle.

3. The filter element for an oil filtering device according to claim 1, characterized in that: It also includes a base, a receiving groove is set at the center of the base, a compression spring is set in the receiving groove, the compression spring is pressed between the base and the lower flange, and the base is connected to the connecting rod.

4. The filter element for an oil filtering device according to claim 3, characterized in that: Both ends of the connecting rod are provided with threaded parts, and the polished rod part is between the two threaded parts. The base is also provided with a polished hole corresponding to the connecting rod. The connecting rod passes through the polished holes of the upper flange, lower flange and base, and is threadedly connected with a nut on the outside, thereby connecting the upper flange, lower flange and base.

5. The filter element for an oil filtering device according to claim 1, characterized in that: An annular sealing groove for accommodating a sealing ring is provided on the upper end surface of the upper flange.

6. The filter element for an oil filtering device according to claim 1, characterized in that: It comprises four connecting rods, and receiving grooves are provided on the filter element stack corresponding to the connecting rods.

7. The filter element for an oil filtering device according to claim 1, characterized in that: The filter chip is made of a synthetic material specially used for solid-liquid separation.

8. An oil filtering device, comprising a tank body, wherein the filter element for an oil filtering device according to any one of claims 1 to 7 is arranged in the tank body.

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