Oil filtering device

Abstract

The application provides an oil filtering device, which comprises an oil filtering barrel assembly, an oil inlet assembly and an oil outlet assembly. The oil filtering barrel assembly comprises a barrel body and at least one filter element assembly arranged in the barrel body in parallel with the depth direction of the barrel body. The top of the barrel body is provided with oil inlet ports corresponding in number to the filter element assemblies. Each oil inlet port is connected with each filter element assembly. The bottom of the barrel body is connected with an oil outlet circuit. The oil inlet assembly comprises an oil path assembly and an oil pump assembly arranged on the oil path circuit. The oil path assembly comprises an oil inlet circuit and a pressure regulating circuit connected with the oil inlet circuit at both ends. The pressure regulating circuit is connected with the inlet end and the outlet end of the oil pump assembly at both ends, respectively. A pressure regulating valve is arranged on the pressure regulating circuit. The oil pressure in the oil inlet circuit section connected with the filter element assembly is adjustable, and the oil pressure adjusting structure is simple and low in cost.

Description

Technical Field

[0001] This application belongs to the field of filtration device technology, and more specifically, relates to an oil filtration device. Background Technology

[0002] In machining or the operation of related mechanical equipment, lubricating oil and / or cooling oil are often required for lubrication of parts or cooling of cutting operations. To save costs, lubricating oil and / or cooling oil are often recycled. In the oil filtration process, the oil pressure is usually regulated by controlling the oil pressure pumped by the oil pump; however, the oil pump required for this type of oil pressure regulation is relatively expensive. Utility Model Content

[0003] The purpose of this application is to provide an oil filtration device to solve the technical problem of high cost of pressure regulating oil circuit in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is to provide an oil filtration device, which includes:

[0005] An oil filter tank assembly includes a tank body and at least one filter element assembly disposed inside the tank body and parallel to the depth direction of the tank body. The top of the tank body has an oil inlet port with a number of oil inlets equal to the number of filter element assemblies. Each oil inlet port is connected to each filter element assembly. An oil outlet circuit is connected to the bottom of the tank body.

[0006] The oil inlet assembly includes an oil circuit assembly and an oil pump assembly disposed on the oil circuit. The oil circuit assembly includes an oil inlet circuit and a pressure regulating circuit with both ends connected to the oil inlet circuit. The two ends of the pressure regulating circuit are respectively connected to the inlet end and the outlet end of the oil pump assembly. A pressure regulating valve is disposed on the pressure regulating circuit.

[0007] Optionally, a coarse filter assembly is provided on the oil inlet circuit, and the coarse filter assembly is located before the inlet end of the oil pump assembly.

[0008] Optionally, the axial direction of the coarse filter assembly is parallel to the flow direction of the oil; wherein, the coarse filter assembly is provided with a filter screen and a first magnetic adsorption device in sequence along the axial direction; the filter screen is arranged perpendicular to the axial direction of the coarse filter assembly, and the first magnetic adsorption device is arranged parallel to the axial direction of the coarse filter assembly.

[0009] Optionally, the first magnetic adsorption device includes a cylindrical frame and a first permanent magnet disposed inside the cylindrical frame, with an adsorption mesh surrounding the cylindrical frame along the circumference of the cylinder.

[0010] Optionally, the filter element assembly includes at least a core, the core having an oil storage space inside, and an oil inlet for connecting the oil inlet circuit is provided on the top of the core.

[0011] Optionally, the filter element assembly further includes a second magnetic adsorption device disposed inside the oil storage space; the top of the core is open, and the filter element assembly includes a cover covering the top of the core, with the oil storage space formed between the cover and the core.

[0012] Optionally, the second magnetic adsorption device includes a frame and a plurality of second permanent magnets disposed on the frame.

[0013] Optionally, a pressure gauge is provided on the oil inlet circuit, located after the pressure regulating circuit.

[0014] Optionally, when multiple filter element assemblies are provided, a switching valve is provided at each of the oil inlets.

[0015] The oil filtration device provided in this application embodiment has at least the following beneficial effects:

[0016] By setting a pressure regulating circuit on the oil inlet assembly between the two ends of the oil pump, when the filter oil pressure needs to be adjusted, rotating the pressure regulating valve causes a portion of the oil pressurized by the oil pump to be diverted to the pressure regulating circuit, remixed with the unpressurized oil, and re-entering the oil pump for pressurization. This makes the oil pressure in the oil inlet circuit section connected to the filter element assembly adjustable, and the oil pressure adjustment structure is simple and low in cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the oil filtration device in some embodiments of this application;

[0019] Figure 2 This is a cross-sectional view of the oil filter tank assembly in some embodiments of this application;

[0020] Figure 3 This is a cross-sectional view of the filter element assembly in some embodiments of this application;

[0021] Figure 4 This is a cross-sectional view of the coarse filter component in some embodiments of this application. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0023] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0024] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0025] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0029] Please refer to the following: Figures 1 to 4 The oil filtration device provided in the embodiments of this application will now be described.

[0030] Understandably, reference Figure 1 The oil filtration device provided in this application embodiment includes an oil filter tank assembly 100 and an oil inlet assembly 200.

[0031] The oil filter tank includes a tank body 110 and a filter element assembly 120 disposed inside the tank body 110. At least one set of filter element assemblies 120 is provided. A number of oil inlets 111 communicating with the filter element assemblies 120 are provided at the top of the tank body 110, and an oil outlet circuit 130 is provided at the bottom of the tank body 110. Preferably, the filter element assembly 120 is disposed within the tank body 110 along the depth direction of the tank body 110; that is, within the filter element assembly 120, the oil flows from top to bottom along the depth direction of the tank body 110.

[0032] The oil inlet assembly 200 includes an oil passage assembly and an oil pump assembly 220 mounted on the oil passage assembly. The oil pump assembly 220 pressurizes the oil in the oil passage assembly to provide the oil to be filtered with a higher oil pressure, allowing it to smoothly permeate through the filter assembly and achieve the filtration effect. The oil pump assembly 220 includes a power unit and a pump body. The power unit can be a motor and a synchronous belt mechanism. The motor drives the pump body to rotate via the synchronous belt mechanism to pump and pressurize the oil.

[0033] The oil circuit assembly includes an oil inlet circuit 210 and a pressure regulating circuit 230 connected to the oil inlet circuit 210 at both ends. The two ends of the pressure regulating circuit 230 are respectively connected to the inlet end and the outlet end of the oil pump assembly 220. A pressure regulating valve 231 is also provided on the pressure regulating circuit 230. Specifically, the oil inlet circuit 210 includes a first circuit section 211 and a second circuit section 212. The first circuit section 211 connects to the external oil supply device and the inlet end of the oil pump, and the second circuit section 212 connects to the outlet end of the oil pump and the oil inlet 111 of the oil filter assembly. The two ends of the pressure regulating circuit 230 are respectively connected to the first circuit section 211 and the second circuit section 212 of the oil inlet circuit 210.

[0034] By setting a pressure regulating circuit 230 on the oil inlet circuit 210, when it is necessary to adjust the oil inlet pressure, rotating the pressure regulating valve 231 opens the pressure regulating circuit 230. At this time, since the oil pressure in the second circuit section 212 is greater than the oil pressure in the first circuit section 211, part of the oil in the second circuit section 212 flows into the pressure regulating circuit 230 and then flows back to the first circuit section 211 from the pressure regulating circuit 230. That is, part of the oil in the second circuit section 212 is diverted, and the oil pressure in the second circuit section 212 decreases. Thus, when it is necessary to adjust the oil inlet pressure, the pumping power of the oil pump does not need to be changed; only the flow rate in the pressure regulating circuit 230 needs to be controlled by rotating the pressure regulating valve 231. The structure is simple and the control is convenient.

[0035] refer to Figure 1 and Figure 4 In some embodiments, a coarse filter assembly 300 is provided on the oil inlet circuit 210. The coarse filter assembly 300 is located before the inlet end of the oil pump assembly 220. More specifically, the coarse filter assembly 300 is located on the first circuit section 211 and before the connection between the pressure regulating circuit 230 and the first circuit section 211. By providing the coarse filter assembly 300, larger solid particles in the oil to be filtered are filtered, such as larger particle wear that may be generated by metal transmission components during lubrication, or cutting waste mixed in the cutting coolant.

[0036] Specifically, the coarse filter assembly 300 is axially parallel to the oil flow direction; and a filter screen 310 and a first magnetic adsorption device 320 are sequentially arranged along the axial direction in the coarse filter assembly 300. The filter screen 310 is arranged perpendicular to the axial direction of the coarse filter assembly 300, and is used to effectively intercept and filter large solid particles in the oil; the first magnetic adsorption device 320 is used to adsorb and filter metal powder particles in the oil to prevent metal impurities from entering the filter element assembly 120. At the same time, the axial arrangement of the first magnetic adsorption device 320 can reduce its impact on the oil flow resistance, and also increase its effective magnetic adsorption distance on the oil to adsorb metal impurities in the oil as much as possible.

[0037] Furthermore, the first magnetic adsorption device 320 includes a cylindrical frame 321 and a first permanent magnet 322 disposed inside the cylindrical frame 321. An adsorption net 323 is arranged around the cylindrical circumference of the cylindrical frame 321, and the adsorption net 323 is detachably mounted on the cylindrical frame 321. By configuring the first magnetic adsorption device 320 in this way, metallic impurities in the oil are adsorbed and intercepted on the adsorption net 323 under the action of magnetic force. Moreover, the metallic impurities are not directly adsorbed onto the first permanent magnet 322. When it is necessary to clean the metallic impurities, the adsorption net 323 can be removed, making the operation simple and convenient.

[0038] refer to Figures 1 to 3 Based on the above embodiments, the filter element assembly 120 includes at least a core 121, with an oil storage space a formed inside the core 121, and an oil inlet 111 for connecting to the oil inlet circuit 210 is provided at the top of the core 121. In this way, oil enters from the top of the core 121 through the oil inlet 111 and permeates through the side wall of the core 121 to complete filtration.

[0039] Furthermore, the filter element assembly 120 also includes a second magnetic adsorption device 122 disposed inside the oil storage space a, and the second magnetic adsorption device 122 is detachably disposed. Specifically, the core 120 is open at the top, and the filter element assembly 120 includes a cover 123 covering the top of the core 121. The aforementioned oil inlet 111 is disposed on the cover 123, and an oil storage space a is formed between the cover 123 and the core 121. When it is necessary to disassemble or assemble the second magnetic adsorption device 122, the cover 123 can be removed from the top of the core 121. Alternatively, the second magnetic adsorption device 122 can be disposed at the bottom of the core 121, and the second magnetic adsorption device 122 can be inserted into the mounting post. In this way, the second magnetic adsorption device 122 is easy to assemble. After the oil enters the oil storage space a, the small amount of metal impurities remaining in the oil after the first magnetic adsorption can be adsorbed by the second magnetic adsorption device 122. After the second magnetic adsorption, the oil is finally filtered by the core 121 to complete the entire filtration process.

[0040] Furthermore, the second magnetic adsorption device 122 includes a frame 1221 and a plurality of second permanent magnets 1222 disposed on the frame 1221. The second permanent magnets 1222 can be fixedly disposed on the frame 1221 or disposed on the frame 1221 by means of insertion or other detachable means.

[0041] In summary, the oil filtration device of this application embodiment, by setting the first magnetic adsorption device 320 and the second magnetic adsorption device 122, makes the oil filtered by the core 121 cleaner, thereby extending the service life of the core 121.

[0042] Understandably, reference Figure 1 Based on the above embodiments, a pressure gauge 240 is installed on the oil inlet circuit 210, after the pressure regulating circuit 230 (i.e., on the second circuit section 212), to monitor the oil pressure of the oil entering the filter element assembly 120 in real time, so as to facilitate the rotation and adjustment of the pressure regulating valve 231.

[0043] It is understood that, based on the above embodiments, when multiple filter element assemblies 120 are provided, a switching valve 250 is provided at each oil inlet 111. In this way, the oil inlet of each filter element assembly 120 can be controlled, and when a filter element assembly 120 is disassembled, unfiltered oil can be prevented from entering the tank 110 and flowing out through the oil outlet circuit 130.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oil filtration device, characterized in that, include: An oil filter tank assembly includes a tank body and at least one filter element assembly disposed inside the tank body and parallel to the depth direction of the tank body. The top of the tank body has an oil inlet port with a number of oil inlets equal to the number of filter element assemblies. Each oil inlet port is connected to each filter element assembly. An oil outlet circuit is connected to the bottom of the tank body. The oil inlet assembly includes an oil circuit assembly and an oil pump assembly disposed on the oil circuit. The oil circuit assembly includes an oil inlet circuit and a pressure regulating circuit with both ends connected to the oil inlet circuit. The two ends of the pressure regulating circuit are respectively connected to the inlet end and the outlet end of the oil pump assembly. A pressure regulating valve is disposed on the pressure regulating circuit.

2. The oil filtration device as described in claim 1, characterized in that: A coarse filter assembly is provided on the oil inlet circuit, and the coarse filter assembly is located before the inlet end of the oil pump assembly.

3. The oil filtration device as described in claim 2, characterized in that: The coarse filter assembly is axially parallel to the direction of oil flow; wherein, the coarse filter assembly is provided with a filter screen and a first magnetic adsorption device in sequence along the axial direction; the filter screen is arranged perpendicular to the axial direction of the coarse filter assembly, and the first magnetic adsorption device is arranged parallel to the axial direction of the coarse filter assembly.

4. The oil filtration device as described in claim 3, characterized in that: The first magnetic adsorption device includes a cylindrical frame and a first permanent magnet disposed inside the cylindrical frame, with an adsorption mesh surrounding the cylindrical frame along the circumference of the cylinder.

5. The oil filtration device according to any one of claims 1 to 4, characterized in that: The filter element assembly includes at least a core, the core having an oil storage space inside, and an oil inlet for connecting the oil inlet circuit is provided on the top of the core.

6. The oil filtration device as described in claim 5, characterized in that: The filter element assembly further includes a second magnetic adsorption device disposed inside the oil storage space; the top of the core is open, and the filter element assembly includes a cover covering the top of the core, with the oil storage space formed between the cover and the core.

7. The oil filtration device as described in claim 6, characterized in that: The second magnetic adsorption device includes a frame and a plurality of second permanent magnets disposed on the frame.

8. The oil filtration device as described in claim 1, characterized in that: A pressure gauge is installed on the oil inlet circuit, after the pressure regulating circuit.

9. The oil filtration device according to any one of claims 1 to 4, characterized in that: When multiple filter element assemblies are provided, a switching valve is provided at each of the oil inlets.

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