A lubricating oil filter

Abstract

A lubricating oil filter includes a capture filter element (100), a separation filter element (200), and a filter housing (300). The capture filter element (100) and the separation filter element (200) are detachably disposed inside the filter housing (300). The capture filter element (100) is located between the separation filter element (200) and the filter housing (300). The filter housing (300) is provided with an oil inlet (301). The direction of the oil inlet (301) is tangent to the inner wall of the filter housing (300). The capture filter element (100) is provided with a circumferential array of capture screens (107). Lubricating oil flows into the filter housing (300) through the oil inlet (301) and is sprayed onto the capture screens (107). The capture screens (107) are made of hydrophobic material. The capture screens made of hydrophobic material perform the initial filtration of the lubricating oil, thereby ensuring the flow rate of the lubricating oil while completing the filtration of solid impurities and suspended droplets in the oil.

Description

Technical Field

[0001] This invention belongs to the field of separation device technology, specifically referring to a lubricating oil filter. Background Technology

[0002] Lubricating oil, as a liquid lubricant, is widely used in various mechanical equipment to reduce friction and protect mechanical parts and processed parts. In the actual use of lubricating oil, it is inevitable that it will be contaminated by impurities, including solid impurities such as dust and liquid impurities such as small droplets. In order to prevent these impurities from damaging mechanical equipment, it is essential to use a filtration device to filter out impurities suspended in the oil.

[0003] Current filtration devices typically use porous materials as filter elements to separate impurities. However, there is an inverse relationship between the flow rate of lubricating oil and the filtration effect of the filter element. The denser the filter element, the smaller the flow rate of lubricating oil. In other words, there is a contradiction between the filtration effect and filtration efficiency of the filter element, making it difficult to improve filtration efficiency while ensuring filtration effect. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a lubricating oil filter to at least partially solve the above technical problems.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a lubricating oil filter, including a capture filter element, a separation filter element, and a filter housing. The filter housing is hollow inside. The capture filter element and the separation filter element are detachably disposed inside the filter housing. The separation filter element is located at the center of the filter housing, and the capture filter element is located between the separation filter element and the filter housing. The capture filter element and the filter housing are rotatably connected. The filter housing is provided with an oil inlet located at the top of the filter housing. The direction of the oil inlet is tangent to the inner wall of the filter housing. The capture filter element is provided with a circumferential array of capture screens. The capture screens are close to the oil inlet and are inclined towards the oil inlet. Lubricating oil flows into the filter housing through the oil inlet and is sprayed onto the capture screens. The capture screens are made of a hydrophobic material.

[0006] Furthermore, the capture filter element includes a capture mechanism and a rotating housing. The rotating housing is rotatably connected to the inner wall of the filter housing. The rotation axis of the rotating housing coincides with the central axis of the filter housing. The rotating housing rotates synchronously with the capture mechanism. The capture mechanism is detachably connected to the rotating housing. The capture filter screen is arranged in a ring array on the capture mechanism. The capture filter screen is perpendicular to the horizontal plane.

[0007] Furthermore, the rotating housing is provided with a ball bearing, the outer ring of the ball bearing is attached to the inner wall of the filter housing, the inner ring of the ball bearing is connected to the rotating housing, and the rotating housing is rotatably connected to the inside of the filter housing through the ball bearing. The inner wall of the filter housing is also provided with a bearing buckle, and the outer ring of the ball bearing is engaged with the bearing buckle.

[0008] Furthermore, the capture mechanism includes a capture claw and a sedimentation tank. The capture claw is provided with longitudinal ribs, and the rotating housing is provided with longitudinal slots arranged in an annular array. The longitudinal ribs are engaged in the longitudinal slots, and the sedimentation tank is fixedly connected to the bottom of the capture claw. The sedimentation tank is located directly below the capture filter.

[0009] Furthermore, the longitudinal ribs and longitudinal slots are perpendicular to the horizontal plane, and the side of the rotating housing is provided with an array of housing through holes, which completely penetrate the side of the rotating housing. The ball bearings are located at the upper and lower ends of the rotating housing, and the housing through holes are all located between the ball bearings.

[0010] Furthermore, the top of the capturing claw is provided with an inclined frame, and the capturing filter is fitted into the inclined frame. The length of the capturing filter is greater than the length of the rotating housing.

[0011] Furthermore, the bottom surface of the filter housing is provided with a bottom opening located at the center of the bottom surface of the filter housing, the top of the filter housing is detachably provided with a top cover, and the bottom of the filter housing is also provided with a ring-shaped array of evenly distributed support legs.

[0012] Furthermore, the separating filter element is located in the bottom opening, and the separating filter element has a filter element flow channel inside, which is perpendicular to the horizontal plane. The bottom of the separating filter element has an oil outlet pipe, and the filter element flow channel is connected to the oil outlet pipe, which is located outside the filter housing.

[0013] Furthermore, the oil inlet is provided with an inlet flange, and the oil outlet pipe is provided with an outlet flange. The inlet flange is connected to the lubricating oil input pipe, and the outlet flange is connected to the lubricating oil output pipe.

[0014] Furthermore, the cross-section of the capture filter on the horizontal plane is an acute angle with an angle range of 30 degrees to 60 degrees, wherein one side of the acute angle is parallel to the direction of the oil inlet.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention uses a capture filter made of hydrophobic material to perform initial filtration of lubricating oil. After the lubricating oil enters the filter housing through the oil inlet, it first comes into contact with the capture filter. Suspended droplets and solid impurities in the lubricating oil are captured in the capture filter. At the same time, as the lubricating oil passes through the capture filter, its own kinetic energy drives the capture filter element to rotate in the filter housing, thereby improving the capture efficiency. This achieves the goal of filtering solid impurities and suspended droplets in the oil while ensuring the flow rate of the lubricating oil. Attached Figure Description

[0017] Figure 1 This is a perspective view of a lubricating oil filter according to an embodiment of the present invention;

[0018] Figure 2 This is a perspective view of a lubricating oil filter with its top cover removed, according to an embodiment of the present invention.

[0019] Figure 3 This is an exploded view of a lubricating oil filter according to an embodiment of the present invention;

[0020] Figure 4 This is a front view of a lubricating oil filter according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0022] Figure 6 for Figure 5 Enlarged view of point I in the middle;

[0023] Figure 7 This is a perspective view of a capture mechanism for a lubricating oil filter according to an embodiment of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view at point II;

[0025] Figure 9 This is a perspective view of a rotating housing of a lubricating oil filter according to an embodiment of the present invention.

[0026] Among them, 100 is the capture filter element, 200 is the separation filter element, 300 is the filter housing, 101 is the capture mechanism, 102 is the rotating housing, 103 is the capture claw, 104 is the sedimentation tank, 105 is the inclined frame, 106 is the longitudinal rib, 107 is the capture filter screen, 108 is the ball bearing, 109 is the housing through hole, 110 is the longitudinal groove, 201 is the filter element flow channel, 202 is the oil outlet pipe, 203 is the outlet flange, 301 is the oil inlet, 302 is the bottom opening, 303 is the support leg, 304 is the top cover, 305 is the bearing buckle, and 306 is the inlet flange.

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8 As shown, the filter includes a capture filter element 100, a separation filter element 200, and a filter housing 300. The filter housing 300 is hollow. The capture filter element 100 and the separation filter element 200 are detachably disposed inside the filter housing 300. The separation filter element 200 is located at the center of the filter housing 300, and the capture filter element 100 is located between the separation filter element 200 and the filter housing 300. The capture filter element 100 and the filter housing 300 are rotatably connected. The filter housing 300 is provided with an oil inlet. 301, the oil inlet 301 is located at the top of the filter housing 300, and the direction of the oil inlet 301 is tangent to the inner wall of the filter housing 300. The capture filter element 100 is provided with a circumferential array of capture filter screens 107. The capture filter screens 107 are close to the position of the oil inlet 301 and are inclined towards the position of the oil inlet 301. The lubricating oil flows into the filter housing 300 through the oil inlet 301 and is sprayed onto the capture filter screens 107. The capture filter screens 107 are made of hydrophobic material.

[0031] In this embodiment, pressurized lubricating oil enters the filter housing 300 through the oil inlet 301 and first contacts the capture filter 107. Since the capture filter 107 is made of a hydrophobic material (typically hydrophilic materials whose surfaces can adsorb water molecules to form a water film), when the lubricating oil passes through this hydrophobic material, water molecules are adsorbed onto the surface to form a water film, and then quickly slide along the hydrophobic surface and separate. In contrast, oil molecules have a weaker adsorption capacity on hydrophobic materials, so they can pass through relatively easily. Therefore, the lubricating oil can pass through the capture filter 107, while solid impurities and suspended droplets in the lubricating oil are captured by the capture filter 107. The 7 particles are captured and stored in the capture filter element 100. At the same time, the kinetic energy carried by the lubricating oil itself acts on the capture filter screen 107, thereby driving the capture filter element 100 to rotate in the filter housing 300. This causes the capture filter screen 107 on the capture filter element 100 to pass through the oil inlet 301 in turn to capture and filter impurities in the lubricating oil. By setting the capture filter screen 107 to be able to rotate, the flow rate of the lubricating oil can be increased while ensuring the filtration effect of the lubricating oil, thereby improving the filtration efficiency. The lubricating oil captured and filtered by the capture filter element 100 is discharged from the filter housing 300 after passing through the separation filter element 200. The flow rate of the output hydraulic oil can be adjusted by replacing the separation filter element 200 with different filtration precision.

[0032] like Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the capture filter element 100 includes a capture mechanism 101 and a rotating housing 102. The rotating housing 102 is rotatably connected to the inner wall of the filter housing 300. The rotation axis of the rotating housing 102 coincides with the central axis of the filter housing 300. The rotating housing 102 rotates synchronously with the capture mechanism 101. The capture mechanism 101 is detachably connected to the rotating housing 102. The capture filter screen 107 is arranged in a ring array on the capture mechanism 101. The capture filter screen 107 is perpendicular to the horizontal plane.

[0033] In this embodiment, the capture filter element 100 and the filter housing 300 are rotatably connected by a rotating housing 102. The capture mechanism 101 on the rotating housing 102 captures and filters the lubricating oil. The capture filter screen 107 is perpendicular to the horizontal plane, which increases the contact area between the capture filter screen 107 and the lubricating oil and improves the capture and filtration efficiency of solid impurities and small droplets in the lubricating oil.

[0034] like Figure 5 , Figure 6 and Figure 9As shown, a ball bearing 108 is provided on the rotating housing 102. The outer ring of the ball bearing 108 is attached to the inner wall of the filter housing 300, and the inner ring of the ball bearing 108 is connected to the rotating housing 102. The rotating housing 102 is rotatably connected to the inside of the filter housing 300 through the ball bearing 108. A bearing buckle 305 is also provided on the inner wall of the filter housing 300, and the outer ring of the ball bearing 108 is engaged with the bearing buckle 305.

[0035] In this embodiment, the rotating housing 102 and the filter housing 300 are rotatably connected by a ball bearing 108. The lubricating oil in the filter housing 300 can provide self-lubrication for the ball bearing 108, eliminating the need for special lubrication of the ball bearing 108. This improves the working environment of the ball bearing 108 and extends its service life.

[0036] like Figure 7 , Figure 8 and Figure 9 As shown, the capture mechanism 101 includes a capture claw 103 and a sedimentation tank 104. The capture claw 103 is provided with longitudinal ribs 106. The rotating housing 102 is provided with longitudinal slots 110 arranged in an annular array. The longitudinal ribs 106 are engaged in the longitudinal slots 110. The sedimentation tank 104 is fixedly connected to the bottom of the capture claw 103 and is located directly below the capture filter 107.

[0037] In this embodiment, the capture mechanism 101 is slidably mounted on the rotating housing 102 via longitudinal ribs 106 and longitudinal slots 110. A sedimentation tank 104 is provided below the capture filter 107. The capture filter 107 allows lubricating oil to pass through, while simultaneously intercepting solid impurities and small droplets mixed in the lubricating oil. The solid impurities and small droplets captured in the capture filter 107 fall due to gravity and eventually accumulate in the sedimentation tank 104. When the sedimentation tank 104 is full, the capture claw 103 is pulled upward, and the longitudinal ribs 106 on the capture claw 103 slide upward in the longitudinal slots 110, thereby lifting out the capture filter 107 and the sedimentation tank 104 for cleaning.

[0038] like Figure 8 and Figure 9 As shown, the longitudinal ribs 106 and longitudinal slots 110 are perpendicular to the horizontal plane. The side of the rotating housing 102 is provided with a series of housing through holes 109. The housing through holes 109 completely penetrate the side of the rotating housing 102. The ball bearings 108 are located at the upper and lower ends of the rotating housing 102. The housing through holes 109 are all located between the ball bearings 108.

[0039] In this embodiment, a fully penetrating housing through hole 109 is provided on the rotating housing 102 to allow lubricating oil to flow on both the inner and outer sides of the rotating housing 102, thereby improving the flow rate of the lubricating oil and preventing the structure of the rotating housing 102 from affecting the flow rate of the lubricating oil.

[0040] like Figure 5 , Figure 7 and Figure 8 As shown, the top of the capture claw 103 is provided with an inclined frame 105, and the capture filter 107 is fitted in the inclined frame 105. The length of the capture filter 107 is greater than the length of the rotating housing 102.

[0041] In this embodiment, an inclined frame 105 is designed at the top of the capture claw 103. The capture filter 107 is engaged in this inclined frame 105, and the length of the capture filter 107 exceeds the length of the rotating housing 102. During filtration, the capture filter 107 is fixed and unfolded by the inclined frame 105. By adjusting the angle between the inclined frame 105 and the oil inlet 301, different capture and filtration effects can be achieved, providing more flexible filtration performance. This allows users to adjust the unfolding degree of the capture filter 107 according to actual needs to obtain the best lubricating oil filtration effect.

[0042] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the bottom surface of the filter housing 300 is provided with a bottom opening 302, which is located at the center of the bottom surface of the filter housing 300. The top of the filter housing 300 is provided with a top cover 304 that can be detached, and the bottom of the filter housing 300 is also provided with a ring-shaped array of evenly distributed support legs 303.

[0043] In this embodiment, the filter housing 300 is firmly fixed to the ground by the evenly arranged support legs 303 in a ring array. When maintenance is required, the user can open the top cover 304 to easily place and remove the capture filter element 100 and the separation filter element 200. During actual filtration, the top cover 304 can be easily closed to achieve effective sealing of the filter housing 300, ensuring smooth filtration, improving the convenience of operation, and ensuring that the effective sealing of the filter can be maintained during use.

[0044] like Figure 5 As shown, the separator filter element 200 is located in the bottom opening 302. The separator filter element 200 has a filter element flow channel 201 inside, which is perpendicular to the horizontal plane. The bottom of the separator filter element 200 has an oil outlet pipe 202. The filter element flow channel 201 is connected to the oil outlet pipe 202, which is located outside the filter housing 300.

[0045] In this embodiment, the separator filter element 200 is placed in the bottom opening 302, and its interior is provided with a filter element flow channel 201 perpendicular to the horizontal plane. At the bottom of the separator filter element 200, there is an oil outlet pipe 202, and the filter element flow channel 201 is connected to the oil outlet pipe 202. The lubricating oil that has been captured and filtered passes through the separator filter element 200 for secondary filtration. Then, the lubricating oil enters the filter element flow channel 201, flows through the filter element flow channel 201 into the oil outlet pipe 202, and is finally discharged to the outside of the filter housing 300. By replacing the separator filter element 200 with different filtration rates, the cleanliness of the final output lubricating oil can be adjusted, and the flow rate of the output lubricating oil can also be flexibly adjusted. This not only improves the filtration effect of the lubricating oil, but also allows users to adjust it according to specific needs to meet different working conditions.

[0046] like Figure 2 and Figure 4 As shown, the oil inlet 301 is provided with an inlet flange 306 at its end, and the oil outlet pipe 202 is provided with an outlet flange 203 at its end. The inlet flange 306 is connected to the lubricating oil input pipe, and the outlet flange 203 is connected to the lubricating oil output pipe.

[0047] In this embodiment, the input pipe of the lubricating oil to be filtered is connected to the inlet flange 306. The lubricating oil to be filtered enters the filter housing 300 through the oil inlet 301. The output pipe of the filtered lubricating oil is connected to the outlet flange 203. The filtered lubricating oil is discharged from the filter housing 300 through the oil outlet pipe 202. The lubricating oil delivery pipe is connected through the inlet flange 306 and the outlet flange 203. The flange is connected to the pipe with bolts, which ensures sealing and prevents lubricating oil leakage. The standardized flange size has wide adaptability and can be used in different working environments.

[0048] like Figure 2 and Figure 8 As shown, the cross-section of the capture filter 107 on the horizontal plane is an acute angle with an angle range between 30 degrees and 60 degrees, wherein one side of the acute angle is parallel to the direction of the oil inlet 301.

[0049] In this embodiment, the capture filter 107 is set to an acute angle on the horizontal plane to reduce the escape of solid impurities and small droplets in the capture filter 107 and improve the capture effect of the capture filter 107. Based on the characteristics of the acute angle, the capture efficiency of the capture filter 107 for impurities and small droplets can be maximized, thereby optimizing the performance of the filter.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0052] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lubricating oil filter, characterized in that: The filter includes a capture filter element (100), a separation filter element (200), and a filter housing (300). The filter housing (300) is hollow inside. The capture filter element (100) and the separation filter element (200) are detachably disposed inside the filter housing (300). The separation filter element (200) is located at the center of the filter housing (300), and the capture filter element (100) is located between the separation filter element (200) and the filter housing (300). The capture filter element (100) includes a capture mechanism (101) and a rotating housing (102). The rotating housing (102) is rotatably connected to the inner wall of the filter housing (300) via ball bearings (108). The rotation axis of the rotating housing (102) coincides with the central axis of the filter housing (300). The rotating housing (102) rotates synchronously with the capture mechanism (101). The filter housing (300) is provided with an oil inlet (301), which is located at the top of the filter housing (300). The direction of the oil inlet (301) is tangent to the inner wall of the filter housing (300). The capture mechanism (101) is provided with a capture filter screen (107) arranged in a circular array. The capture filter screen (107) is close to the position of the oil inlet (301) and is inclined towards the position of the oil inlet (301). Lubricating oil flows into the filter housing (300) through the oil inlet (301) and is sprayed onto the capture filter screen (107), which pushes the capture filter element (100) to rotate. The capture filter (107) is made of a hydrophobic material. The cross-section of the capture filter (107) on the horizontal plane is an acute angle with an angle range of 30 degrees to 60 degrees, wherein one side of the acute angle is parallel to the direction of the oil inlet (301).

2. The lubricating oil filter according to claim 1, characterized in that: The capture mechanism (101) includes a capture claw (103) and a sedimentation tank (104). The capture claw (103) is provided with longitudinal ribs (106). The rotating housing (102) is provided with longitudinal slots (110) arranged in a ring. The longitudinal ribs (106) are engaged in the longitudinal slots (110). The sedimentation tank (104) is fixedly connected to the bottom of the capture claw (103). The sedimentation tank (104) is located directly below the capture filter (107).

3. The lubricating oil filter according to claim 2, characterized in that: The longitudinal ribs (106) and longitudinal slots (110) are perpendicular to the horizontal plane. The rotating housing (102) has a series of housing through holes (109) on its side. The housing through holes (109) completely penetrate the side housing of the rotating housing (102). The ball bearings (108) are located at the upper and lower ends of the rotating housing (102). The housing through holes (109) are all located between the ball bearings (108).

4. The lubricating oil filter according to claim 3, characterized in that: The top of the capture claw (103) is provided with an inclined frame (105), and the capture filter (107) is fitted in the inclined frame (105). The length of the capture filter (107) is greater than the length of the rotating housing (102).

5. The lubricating oil filter according to claim 4, characterized in that: The filter housing (300) has a bottom opening (302) on its bottom surface, the bottom opening (302) being located at the center of the bottom surface of the filter housing (300), the top of the filter housing (300) is detachably provided with a top cover (304), and the bottom of the filter housing (300) is also provided with a ring array of evenly distributed support legs (303).

6. The lubricating oil filter according to claim 5, characterized in that: The separation filter element (200) is located in the bottom opening (302). The separation filter element (200) has a filter element flow channel (201) inside. The filter element flow channel (201) is perpendicular to the horizontal plane. The bottom of the separation filter element (200) is provided with an oil outlet pipe (202). The filter element flow channel (201) is connected to the oil outlet pipe (202). The oil outlet pipe (202) is located outside the filter housing (300).

7. The lubricating oil filter according to claim 6, characterized in that: An inlet flange (306) is provided at the end of the oil inlet (301), and an outlet flange (203) is provided at the end of the oil outlet pipe (202). The inlet flange (306) is connected to the input pipe of the lubricating oil, and the outlet flange (203) is connected to the output pipe of the lubricating oil.

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