Expandable modular laminated filtration system

Abstract

This application provides an expandable modular stacked filtration system. The system includes a filter module group comprising multiple filter units, each including a valve block and a filter cartridge mounted on the valve block. Each filter unit has a standardized interface. The multiple filter units are detachably connected via the standardized interface and are arranged in parallel to form multiple filtration branches. A support unit is used to mount a drive unit and filter units. A monitoring unit, connected at least to the drive unit, is used to monitor the operating status of the filtration system. By arranging multiple filter units in parallel to form multiple independent filtration branches, this application allows isolation of a single filter unit from the system when maintenance or filter replacement is required, while other filter units continue to operate normally without interrupting the overall filtration process. This improves system availability and ease of maintenance.

Description

Technical Field

[0001] This application relates to the field of filtration equipment technology, and in particular to an expandable modular stacked filtration system. Background Technology

[0002] Fluid media filtration systems are widely used in various industrial equipment to remove particulate impurities and contaminants from the media, ensuring the normal operation and service life of the equipment. With the increasing precision of industrial equipment and stricter environmental protection requirements, higher demands are being placed on the performance, reliability, and adaptability of filtration systems.

[0003] Most common filtration equipment currently available features an integrated, one-piece structure, combining the power unit, filtration unit, and control unit into a single frame. This structure is convenient for use in locations with ample installation space, but it is often difficult to install in space-constrained or complex environments such as internal combustion locomotives, ship engine rooms, and mining equipment. Summary of the Invention

[0004] Based on this, the purpose of this application is to propose an expandable modular stacked filtration system to solve the problems of the single spatial layout of the filtration system and the need to interrupt system operation during maintenance.

[0005] To achieve the above objectives, this application provides a scalable modular stacked filtration system, which includes: The drive unit is used to provide power for the transport of fluid media; A filter module group includes multiple filter units, each filter unit including a valve block and a filter cartridge mounted on the valve block, each filter unit having a standardized interface; the multiple filter units are detachably connected through the standardized interface, and the multiple filter units are arranged in parallel to form multiple filter branches; A support unit for mounting the drive unit and the filter unit; A monitoring unit, at least connected to the drive unit, is used to monitor the operating status of the filtration system.

[0006] In one embodiment, the plurality of filtering units includes at least one basic filtering unit; The basic filtration unit includes a bypass branch, which is located between the valve block and the filter cartridge of the basic filtration unit. The bypass branch is used to open when the fluid pressure inside the filter cartridge exceeds a preset threshold, thereby forming a pressure relief passage.

[0007] In one embodiment, the plurality of filter units further includes at least one modular filter unit, which is connected in parallel with the base filter unit or other modular filter units via a standardized interface.

[0008] In one embodiment, the filtering module group includes at least three filtering units, and adjacent filtering units in the filtering module group can be arranged in a combination of at least two of the following directions: a first direction, a second direction perpendicular to the first direction, and a third direction that forms a non-right angle with the first direction; wherein the first direction, the second direction, and the third direction are coplanar.

[0009] In one embodiment, in each of the filter units, the valve block includes an oil inlet and an oil outlet, the filter cartridge contains a filter element, the filter element has an inner cavity, the outer peripheral wall of the filter element and the inner wall of the filter cartridge form an outer cavity, one of the oil inlet and the oil outlet communicates with the outer cavity of the filter element, and the other communicates with the inner cavity of the filter element.

[0010] In one embodiment, the filter module group includes a connection structure that cooperates with the standardized interface, and adjacent filter units are fluidly connected through the connection structure.

[0011] In one embodiment, the connection structure includes an inclined angle connector having a first interface and a second interface, wherein a preset angle greater than 0° and less than 90° is formed between the axis of the first interface and the axis of the second interface.

[0012] In one embodiment, the standardized interface includes a quick-release snap-fit ​​interface with a sealing ring.

[0013] In one embodiment, the drive unit includes a variable frequency motor and a gear pump, the variable frequency motor driving the gear pump to steplessly adjust the intake flow rate of the fluid medium.

[0014] In one embodiment, the monitoring unit includes: A multi-source signal acquisition module, including at least one of a pressure sensor, a temperature sensor, and a particulate matter monitoring sensor; The diagnostic module is used to compensate for drift in the signals acquired by the sensors and to identify abnormal states, including at least sensor disconnection, signal loss, or signal exceeding limits. The automatic calibration module is used to perform zero-point correction and flow calibration according to a preset cycle.

[0015] The scalable modular stacked filtration system provided in this application forms multiple independent filtration branches by connecting multiple filtration units in parallel. When a single filtration unit needs maintenance or filter replacement, it can be isolated from the system while other filtration units can still work normally without interrupting the overall filtration operation, thus improving the availability and ease of maintenance of the system.

[0016] Furthermore, the filter units can be arranged in multiple directions, including two vertical directions in the horizontal plane and directions at an angle to the horizontal plane. The overall shape of the filter module group can be flexibly adjusted according to the actual spatial layout of the field equipment to adapt to complex installation environments.

[0017] The filter units are connected directly or via connectors through standardized interfaces, avoiding the use of a large number of external pipes in traditional split systems. The overall structure is more compact and occupies less space. At the same time, sealing rings are provided at the interfaces to improve the sealing reliability of the connection.

[0018] The basic filtration unit is equipped with a bypass branch. When the filter element is clogged or the system pressure rises abnormally, the bypass branch automatically opens to form a pressure relief path, preventing filter element damage or system leakage due to excessive pressure and ensuring the safe operation of the system.

[0019] Users can select the number of parallel filter units and the filtration accuracy level of the filter element in each unit according to actual working conditions, so as to realize flexible configuration and gradient optimization of the filtration system and effectively reduce the pressure loss and energy consumption of the medium in the pipeline.

[0020] The monitoring unit has multi-source signal acquisition capability, which can monitor key parameters such as pressure, temperature, and particulate matter content in real time; it is used to compensate for drift of the signals acquired by the sensors, and can automatically correct the measurement deviations that occur during long-term use of the sensors; it has an abnormal state identification function, which can promptly detect faults such as sensor disconnection, signal loss, or exceeding limits; the automatic calibration function ensures the measurement accuracy during long-term operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the scalable modular stacked filter system provided in the embodiments of this application; Figure 2 This is a schematic diagram of the scalable modular stacked filtering system provided in the embodiments of this application from another perspective; Figure 3 This is another structural schematic diagram of the scalable modular stacked filtering system provided in the embodiments of this application; Figure 4 This is a schematic diagram of a spatial arrangement of multiple filter units in the filter module group in an embodiment of this application; Figure 5 This is a schematic diagram of another spatial arrangement of multiple filter units in the filter module group in an embodiment of this application; Figure 6 This is a schematic diagram of another spatial arrangement of multiple filter units in the filter module group in the embodiments of this application; Figure 7 This is a schematic diagram of another spatial arrangement of multiple filter units in the filter module group in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the filter unit of the filter module group in the embodiments of this application; Figure 9 This is a structural schematic diagram of the decomposed state of the basic filtering unit in an embodiment of this application; Figure 10 This is a top view of the filtering unit of the filtering module group in the embodiments of this application; Figure 11 yes Figure 10 A cross-sectional view of the filter unit along the AA direction; Figure 12 This is a side view of the filtering unit of the filtering module group in the embodiments of this application; Figure 13 This is a schematic diagram of the lubrication principle of the filtration system in this application embodiment.

[0023] Marker explanation: 100. Expandable modular stacked filtration system; 110. Drive unit; 120. Filter module group; 1201. Filter unit; 1202. Filter cartridge; 1203. Valve block; 1204. Filter element; 1205. Threaded rod; 121. Basic filter unit; 1211. Bypass valve; 1212. Bypass valve seat; 122. Modular filter unit; 130. Support unit; 140. Monitoring unit; 103. Variable frequency motor; 104. Bell-shaped cover; 105. Gear pump; 106. Pipe fitting; 108. Oil collection tray; 109. Support frame; 111. Mounting bracket; 112. Pressure gauge; 113. Pressure test connector; 114. Pipe fitting; 115. Connection structure; 116. Filter cartridge cover; 117. Plug; 118. Spring; 119. Support flange. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] The scalable modular stacked filtering system provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments described herein are for the purpose of helping to understand the core concept of this application and are not intended to limit the scope of protection of this application.

[0027] In the field of fluid media filtration technology, commonly used filtration equipment is mostly an integrated structure, which integrates the power unit, filtration unit, and control unit into a single frame, making it easy to install and move, and suitable for relatively large work sites. However, in working environments with limited space or complex layouts, such as internal combustion locomotives, ship engine rooms, and mining equipment, integrated structures are often difficult to install.

[0028] To adapt to complex installation environments, modular, split-type lubricating oil filtration systems have emerged in related technologies. These systems consist of separate oil extraction modules, filtration modules, and electrical control units. The modules are connected via external piping and quick-release clamps, and multiple filtration modules can be combined as needed. This split design results in smaller, lighter individual modules, making them easier to move and install.

[0029] However, the aforementioned modular filtration system still has the following shortcomings in practical applications: First, the filtration modules are connected in series via external pipelines, allowing only linear expansion in one direction. This results in a limited spatial layout and makes it difficult to adapt to complex on-site installation environments. Second, with the series connection, each filtration module shares a single fluid path. When a single module needs maintenance or replacement, the entire system must be interrupted, affecting the continuity of filtration operations. Third, due to the use of external pipelines, the overall structure is relatively loose, occupies a large space, and the sealing reliability needs improvement. Fourth, the monitoring functions of the filtration system are relatively basic, lacking compensation mechanisms for sensor signal drift and diagnostic capabilities for abnormal states, making it difficult to guarantee the accuracy and safety of long-term operation.

[0030] To address the aforementioned issues, this application provides an scalable modular stacked filtering system.

[0031] like Figures 1 to 3 , Figure 8 , Figure 9 As shown, an embodiment of this application provides a scalable modular stacked filtration system 100. The scalable modular stacked filtration system 100 includes a drive unit 110, a filter module group 120, a support unit 130, and a monitoring unit 140. The drive unit 110 provides power for the transport of the fluid medium; the filter module group 120 includes multiple filter units 1201, each filter unit 1201 including a valve block 1203 and a filter cartridge 1202 mounted on the valve block 1203, and each filter unit 1201 has a standardized interface; the multiple filter units 1201 are detachably connected through the standardized interface, and the multiple filter units 1201 are arranged in parallel to form multiple filtration branches; the support unit 130 is used to mount the drive unit 110 and the filter units 1201; the monitoring unit 140 is at least connected to the drive unit 110 and is used to monitor the operating status of the filtration system.

[0032] In one specific implementation, the drive unit 110 includes a variable frequency motor 103 and a gear pump 105. The variable frequency motor 103 is connected to the gear pump 105 via a bell-shaped cover 104. The variable frequency motor 103 drives the gear pump 105 to rotate, drawing lubricating oil to be filtered from the oil tank. The power range of the variable frequency motor 103 can be 0.75-22kW, and the suction flow rate of the gear pump 105 can be steplessly adjusted within the range of 15-200L / min to adapt to the filtration needs of equipment of different sizes. The outlet of the gear pump 105 is connected to the inlet of the filter module assembly 120 via a pipe connector 106.

[0033] The filter module assembly 120 includes multiple filter units 1201. Each filter unit 1201 includes a valve block 1203 and a filter cartridge 1202 mounted on the valve block 1203. The filter cartridge 1202 houses a filter element 1204 for filtering the passing lubricating oil. Each filter unit 1201 has a standardized interface, which is a docking interface integrating a fluid passage and a mechanical locking structure, and is located on the valve block 1203. The standardized interface refers to an interface structure with uniform specifications and dimensions located on the valve block 1203, used to achieve detachable mechanical connection and fluid communication between adjacent filter units 1201.

[0034] Specifically, the standardized interface has at least a uniform geometry and size, enabling the interfaces of any two filter units 1201 to be matched and connected to each other; it also includes a fluid channel interface for oil passage communication between adjacent filter units 1201; it may also include a mechanical connection structure for detachable fixing between adjacent filter units 1201; and preferably, it is provided with a sealing structure to ensure the sealing performance after connection.

[0035] As one specific implementation, the standardized interface may include a quick-release snap-fit ​​interface with a sealing ring at the interface to ensure a tight seal after connection. The quick-release snap-fit ​​interface is used for rapid assembly and disassembly, and the sealing ring is used to ensure the reliability of the seal at the connection. The geometry and dimensions of the standardized interface are standardized, enabling direct connection or indirect connection via connection structure 115 between the basic filter unit 121 and the modular filter unit 122, as well as between multiple modular filter units 122.

[0036] Multiple filter units 1201 are detachably connected via standardized interfaces and are arranged in parallel to form multiple independent filtration branches. The parallel arrangement means that after the fluid medium flows out of the drive unit 110, it is distributed to each filter unit 1201, filtered by each unit, and then returns to the oil tank. Each filtration branch is independent and does not interfere with the others. When a filter unit 1201 requires maintenance (such as filter element replacement), it can be removed from the system while the other filter units 1201 continue to operate normally, without requiring the entire filtration system to be shut down. This parallel structure improves the system's reliability and maintainability.

[0037] The support unit 130 is used to mount the drive unit 110 and the filter unit 1201. In one specific embodiment, the support unit 130 includes a support frame 109, a mounting bracket 111, and an oil collection tray 108. The drive unit 110 is fixed to the mounting bracket 111 by bolts. Multiple filter units 1201 are fixed to the support frame 109 by bolts, and the support frame 109 is mounted above the oil collection tray 108. The oil collection tray 108 is located below the filter units 1201 and is used to collect lubricating oil that may drip during maintenance, preventing environmental pollution.

[0038] For example, the outer periphery of the filter unit 1201 is provided with a mounting structure. The filter unit 1201 is columnar, and the outer contour of the mounting structure on the filter unit 1201 is rectangular. The mounting structure is located in the middle section of the filter unit 1201 in the axial direction. All four sides of the mounting structure can be detachably connected to the support frame 109 by bolts. The support frame 109 is fastened to the oil collection tray 108 and the mounting bracket 111 by bolts. The lubricating oil collected in the oil collection tray 108 can be filtered and reused.

[0039] The monitoring unit 140 is connected to at least the drive unit 110 and is used to monitor the operating status of the filtration system. In one specific implementation, the monitoring unit 140 includes an electrical control box, which houses a controller and a communication module. The monitoring unit 140 is connected to the variable frequency motor 103 via a cable and can control the start, stop, and speed of the variable frequency motor 103. The monitoring unit 140 is also connected to pressure sensors, temperature sensors, and particulate matter monitoring sensors installed on the filtration unit 1201 for real-time acquisition of system operating parameters.

[0040] The expandable modular stacked filtration system 100 provided in this application forms multiple independently operating filtration branches by arranging multiple filter units 1201 in parallel. This solves the problem of having to shut down the system during maintenance of series modular systems, achieving the effect of maintaining a single unit without interrupting the overall system operation, thus improving the system's availability and maintainability. At the same time, the use of standardized interfaces and quick-release snap-fit ​​connections makes the disassembly and assembly of the filter units 1201 simple and quick, further improving maintenance efficiency.

[0041] For example, the oil outlet of the drive unit 110 is connected to the split manifold. The split manifold is connected one-to-one with the oil inlet of each filter unit 1201 through a standardized interface. The oil outlets of each filter unit 1201 are connected to the manifold. The manifold is connected to the oil tank through the return oil pipe. The connection between the split / manifold and the filter unit is equipped with an independent manual shut-off valve. When maintaining a single filter unit, the corresponding shut-off valve is closed, which can realize offline operation without interrupting the overall oil circuit.

[0042] It should be noted that the term "stacked" in this application has two meanings: firstly, it refers to the gradient stacking of filtration precision, where each parallel filtration unit can be configured with filter cartridges of different precision levels, and gradient filtration from coarse to fine filtration can be achieved through the combination of multiple units; secondly, it refers to the superposition and expansion of modular units, where the number of filtration units can be freely increased or decreased through standardized interfaces, thereby achieving the hierarchical superposition of filtration capabilities.

[0043] In some embodiments, such as Figure 10 , Figure 11 As shown, in each filter unit 1201, the valve block 1203 includes an oil inlet and an oil outlet. The filter cartridge 1202 contains a filter element 1204. The filter element 1204 has an inner cavity. The outer peripheral wall of the filter element 1204 and the inner wall of the filter cartridge 1202 form an outer cavity. One of the oil inlet and the oil outlet communicates with the outer cavity of the filter element, and the other communicates with the inner cavity of the filter element.

[0044] Specifically, each filter unit 1201 includes a valve block 1203 and a filter cartridge 1202 mounted on the valve block 1203. A filter cartridge cover 116 is provided at the upper end of the filter cartridge 1202, and the filter cartridge cover 116 is fixedly connected to the filter cartridge 1202 by bolts. A fluid passage is provided inside the valve block 1203 to guide the flow direction of the lubricating oil.

[0045] The filter cartridge 1202 contains a filter element 1204, which is a cavity filter element structure with a closed outer peripheral wall and an open inner cavity. The outer peripheral wall of the filter element 1204 and the inner wall of the filter cartridge 1202 form the outer cavity of the filter element.

[0046] The fluid passage on valve block 1203 includes an oil inlet and an oil outlet. Specifically, the oil inlet connects to the outer cavity of the filter element, and the oil outlet connects to the inner cavity of the filter element. When lubricating oil enters the filter unit 1201, it first flows into the outer cavity of the filter element from the oil inlet of valve block 1203. Under pressure, the lubricating oil passes through the filter layer of filter element 1204 and enters the inner cavity of the filter element. During this process, particulate impurities are trapped by filter element 1204, and the filtered clean lubricating oil flows out from the inner cavity of the filter element through the oil outlet of valve block 1203.

[0047] The filter element 1204 is fixed to the valve block 1203 by a threaded rod 1205. The lower end of the threaded rod 1205 is threaded to the valve block 1203, and the upper end passes through the inner cavity of the filter element 1204 and mates with the inner hole of the filter cartridge cover 116. A spring 118 is sleeved on the threaded rod 1205 and located between the valve block 1203 and the filter element 1204, used to support the filter element 1204 and the support flange 119 upwards. An O-ring is provided on the threaded rod 1205 to isolate the inner and outer chambers of the filter element 1204 and prevent unfiltered lubricating oil from directly entering the inner cavity of the filter element.

[0048] The valve block 1203 may also be equipped with a pressure testing connector 113 for connecting a pressure gauge 112 or a pressure sensor to detect the pressure difference between the front and rear chambers of the filter element 1204 and determine the degree of blockage of the filter element 1204. Non-working orifices on the valve block 1203 are sealed by screw plugs 117. For example, the threaded rod 1205 has a hollow structure with multiple through holes on its sidewalls communicating with the inner cavity of the filter element. After filtration, the lubricating oil enters the hollow channel of the threaded rod through the through holes and is finally discharged from the oil outlet of the valve block 1203. An O-ring is fitted at the mating point between the threaded rod 1205 and the filter element 1204 to completely isolate the outer and inner cavities of the filter element and prevent short circuits of unfiltered lubricating oil. Sealing elements are provided at the connection surfaces of the filter cartridge cover 116 and the filter cartridge 1202, and between the filter cartridge and the valve block 1203. An O-ring is used at the filter cartridge cover, and a metal-coated gasket can be used at the connection between the filter cartridge and the valve block.

[0049] The outer wall of filter element 1204 and the inner wall of filter cartridge 1202 form an outer cavity of filter element. The oil inlet is connected to the outer cavity of filter element and the oil outlet is connected to the inner cavity of filter element. This ensures that the lubricating oil must pass through the filter layer of filter element 1204 to reach the oil outlet from the oil inlet side, thus ensuring the filtration effect. At the same time, the design of the outer cavity of filter element increases the filtration area, which helps to reduce fluid resistance.

[0050] In some embodiments, such as Figure 9 As shown, in the filter module group 120, multiple filter units 1201 include at least one basic filter unit 121; the basic filter unit 121 includes a bypass branch, which is disposed between the valve block 1203 and the filter cartridge 1202 of the basic filter unit 121, and is used to open when the fluid pressure inside the filter cartridge 1202 exceeds a preset threshold, so as to directly conduct the high pressure fluid on the oil inlet side around the filter element 1204 to the oil outlet side, forming a pressure relief passage.

[0051] Furthermore, the plurality of filter units 1201 also includes at least one modular filter unit 122, which is connected in parallel with the basic filter unit 121 or other modular filter units 122 via a standardized interface.

[0052] The filter module group 120 may include a basic filter unit 121 and one or more modular filter units 122. The difference between the basic filter unit 121 and the modular filter unit 122 is that the basic filter unit 121 has a bypass branch.

[0053] Specifically, a bypass branch is provided between the valve block 1203 and the filter cartridge 1202 of the basic filtration unit 121. The bypass branch includes a bypass valve 1211, a bypass valve seat 1212, and a spring 118. Under normal operating conditions, the spring 118 presses the bypass valve seat 1212 upwards, making it tightly fit the bottom of the bypass valve 1211. The bypass valve 1211 is in the closed state, and the inner and outer cavities of the filter element 1204 are isolated, allowing all lubricating oil to be filtered through the filter element 1204. When the filter element 1204 is severely clogged or the system pressure rises abnormally, causing the pressure difference between the inner and outer cavities of the filter element 1204 to exceed a preset threshold, the fluid pressure will overcome the elastic force of the spring 118, pushing the bypass valve seat 1212 downwards, and the bypass valve 1211 will open. At this time, the high-pressure lubricating oil in the outer cavity of the filter element 1204 can be directly connected to the oil outlet side through the bypass valve 1211, forming a pressure relief passage around the filter element 1204 to prevent damage to the filter element 1204 or system leakage due to excessive pressure difference.

[0054] The preset threshold of the bypass branch can be adjusted by selecting springs of different stiffnesses. A pressure testing connector can be installed on the valve block 1203 to detect the working pressure of the bypass branch.

[0055] The modular filter unit 122 has a structure that is basically the same as the basic filter unit 121, except that it does not have a bypass branch. The modular filter unit 122 is connected in parallel with the basic filter unit 121 or other modular filter units 122 through a standardized interface.

[0056] By incorporating a bypass branch in the basic filter unit 121, an overpressure protection mechanism is provided for the entire filtration system. When multiple modular filter units 122 are connected in parallel in the filtration system, the safety of the entire system can be guaranteed as long as at least one basic filter unit 121 has a bypass branch. This design ensures safety while avoiding the increased cost of incorporating a bypass branch in each filter unit 1201, thus balancing safety with economy.

[0057] In some embodiments, such as Figures 5 to 7 As shown, the filter module group 120 includes at least three filter units 1201. Adjacent filter units 1201 in the filter module group 120 can be arranged in at least two of the following directions: a first direction, a second direction perpendicular to the first direction, and a third direction that forms a non-right angle with the first direction; wherein the first direction, the second direction, and the third direction are coplanar.

[0058] The filter module group 120 includes a connection structure 115, which is compatible with a standardized interface. Adjacent filter units 1201 are fluidly connected through the connection structure 115.

[0059] The connection structure 115 includes an inclined angle connector, which has a first interface and a second interface, and the axis of the first interface and the axis of the second interface form a preset angle greater than 0° and less than 90°.

[0060] like Figures 5 to 7 As shown, the filter module group 120 includes at least three filter units 1201, which can be arranged in various spatial directions to adapt to different installation environments. Adjacent filter units 1201 in the filter module group 120 can be arranged along a first direction (as shown by the X direction in the figure), along a second direction perpendicular to the first direction (as shown by the Y direction in the figure), or along a third direction forming a non-right angle with the first direction. The first direction, the second direction, and the third direction are coplanar.

[0061] The coplanarity of the first, second, and third directions means that all filter units are arranged in the same plane or at an angle relative to the same plane, excluding stacking along directions perpendicular to that plane. The plane is a horizontal plane or an inclined plane at an angle to the horizontal plane.

[0062] As one specific implementation method, Figure 6The example is an Nx(2)Ny(2) arrangement, which means that the filter unit 1201 has 2 columns in the horizontal direction and 2 rows in the vertical direction, forming a matrix layout of 2 rows and 2 columns. This layout method can arrange more filter units 1201 in a limited space, and is suitable for occasions with high filtration capacity requirements and relatively regular installation space. Figure 7 The example is an Nx(3)Nθ(30) arrangement, which means that there are 3 columns of filter unit 1201 in the horizontal direction, and the entire filter module group 120 is arranged at a 30° angle. This inclined arrangement is suitable for occasions where it is necessary to bypass obstacles or install it on an inclined surface.

[0063] Multiple directional arrangements can be achieved through the connection structure 115. The filter module group 120 includes at least one connection structure 115, which cooperates with a standardized interface to achieve fluid communication between adjacent filter units 1201. When an inclined arrangement is required, the connection structure 115 can adopt an inclined angle connector, which has a first interface and a second interface. The axis of the first interface and the axis of the second interface form a preset angle greater than 0° and less than 90°, thereby achieving an inclined connection between adjacent filter units 1201.

[0064] For example, the preset included angle between the first and second interfaces of the inclined angle connector is 15°, 30°, 45°, 60°, 75°, etc.

[0065] Through flexible combinations of horizontal, vertical, and inclined directions, the filtration system can adapt to various complex installation environments, such as bypassing on-site pipelines, conforming to equipment slopes, and filling irregular corners. This spatial adaptability is difficult to achieve with a one-dimensional linear series structure, enabling highly adaptable installation of the filtration system under complex operating conditions.

[0066] In the filter module group 120, there is one basic filter unit 121 and 1 to 4 modular filter units 122 connected in parallel to adapt to different flow rate and filtration accuracy requirements. The bypass branch of a single basic filter unit can realize overpressure protection for the entire filter module group, balancing system safety and economy.

[0067] In some embodiments, the standardized interface includes a quick-release snap-fit ​​interface with a sealing ring. As a specific implementation, the standardized interface includes a quick-release snap-fit ​​interface with a sealing ring. When the filter unit 1201 needs to be disassembled or assembled, it can be quickly separated or connected simply by operating the snap-fit, without the need for tools. The sealing ring ensures the reliability of the seal at the connection, preventing leakage. This quick-release structure makes the disassembly and assembly of the filter unit 1201 simpler and faster, further shortening maintenance time and improving maintenance efficiency.

[0068] The drive unit 110 includes a variable frequency motor 103 and a gear pump 105. The variable frequency motor 103 drives the gear pump 105 to steplessly adjust the suction flow rate of the fluid medium. Through variable frequency control, the flow rate can be adjusted in real time according to actual working conditions, avoiding unnecessary energy consumption, and adapting to scenarios with different filtration accuracy and flow rate requirements.

[0069] like Figure 13 As shown, the drive unit 110 uses a variable frequency motor 103 and a gear pump 105 to achieve fluid delivery and pressure control. Meanwhile, in the filter module group 120, the basic filter unit 121 and the modular filter unit 122 form a parallel filter branch and bypass protection structure. The filter units are integrated through standardized interfaces. The basic filter unit 121 has a built-in bypass valve that automatically opens to release pressure and return flow when the filter element is clogged, ensuring continuous system operation.

[0070] The monitoring unit 140 includes: a multi-source signal acquisition module, including at least one of a pressure sensor, a temperature sensor, and a particulate matter monitoring sensor; a diagnostic module, used to perform drift compensation on the signals acquired by the sensors and to identify abnormal states including at least sensor disconnection, signal loss, or signal exceeding limits; and an automatic calibration module, used to perform zero-point calibration and flow rate calibration according to a preset cycle.

[0071] Specifically, the monitoring unit 140 adopts an industrial standard communication protocol interface, such as the Modbus RTU protocol, to facilitate data exchange with the upper control system or industrial IoT platform.

[0072] The monitoring unit 140 integrates a multi-source signal acquisition module for connecting to various industrial-grade sensing devices. Specifically, the monitoring unit 140 includes a pressure sensor for monitoring the pressure at the inlet and outlet of the filter unit 1201. The monitoring unit 140 also includes a temperature sensor for monitoring the temperature of the lubricating oil. Furthermore, the monitoring unit 140 includes a particulate matter monitoring probe for real-time detection of the particulate matter content in the lubricating oil. These sensors are used to achieve comprehensive monitoring of multiple parameters.

[0073] The monitoring unit 140 also includes a diagnostic module, which is used to perform drift compensation on the signals acquired by the sensors. The compensation process is as follows: when the system is in a non-filtered state, the monitoring unit automatically acquires the zero-point output value of each sensor, compares it with the factory-calibrated reference zero-point value, and calculates the drift compensation amount; in subsequent normal filtering monitoring, the drift compensation amount is used to correct the signals acquired by the sensors in real time before outputting them.

[0074] The monitoring unit 140 also includes an automatic calibration module for performing zero-point calibration and flow calibration at preset intervals. For example, it can be set to automatically perform zero-point calibration and pulsed flow calibration every 24 hours. Zero-point calibration is used to eliminate sensor zero-point drift, and flow calibration is used to ensure the accuracy of flow measurement. The preset interval can be dynamically adjusted according to actual operating conditions; for example, the calibration interval can be shortened when operating conditions change frequently, and appropriately extended when operating conditions are stable.

[0075] The monitoring unit 140 enables the monitoring and control of the filtration system's operating status. Signal drift compensation and automatic calibration functions ensure the accuracy of monitoring data during long-term operation; the abnormal state identification function can promptly detect sensor faults or abnormal operating conditions, improving system safety and reliability; and the standard communication protocol interface facilitates system integration and data sharing, providing a foundation for equipment maintenance and management.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A scalable modular stacked filtration system, characterized in that, include: The drive unit is used to provide power for the transport of fluid media; A filter module group includes multiple filter units, each filter unit including a valve block and a filter cartridge mounted on the valve block, and each filter unit having a standardized interface; The multiple filter units are detachably connected through the standardized interface, and the multiple filter units are arranged in parallel to form multiple filter branches; A support unit for mounting the drive unit and the filter unit; A monitoring unit, at least connected to the drive unit, is used to monitor the operating status of the filtration system.

2. The scalable modular stacked filtration system according to claim 1, characterized in that, The plurality of filtration units includes at least one basic filtration unit; The basic filtration unit includes a bypass branch, which is located between the valve block and the filter cartridge of the basic filtration unit. The bypass branch is used to open when the fluid pressure inside the filter cartridge exceeds a preset threshold, thereby forming a pressure relief passage.

3. The scalable modular stacked filtration system according to claim 1, characterized in that, The filter module group also includes a branch manifold and a junction manifold. The oil inlet of each filter unit is connected to the branch manifold, and the oil outlet is connected to the junction manifold, so that multiple filter units form parallel filter branches.

4. The scalable modular stacked filtration system according to claim 1, characterized in that, The filtering module group includes at least three filtering units. Adjacent filtering units in the filtering module group can be arranged in a combination of at least two of the following directions: a first direction, a second direction perpendicular to the first direction, and a third direction that forms a non-right angle with the first direction. The first direction, the second direction, and the third direction are located in the same arrangement plane.

5. The scalable modular stacked filtration system according to claim 1, characterized in that, In each of the filter units, the valve block includes an oil inlet and an oil outlet, the filter cartridge contains a filter element, the filter element has an inner cavity, and an outer cavity is formed between the outer peripheral wall of the filter element and the inner wall of the filter cartridge. One of the oil inlet and the oil outlet communicates with the outer cavity of the filter element, and the other communicates with the inner cavity of the filter element.

6. The scalable modular stacked filtration system according to claim 1, characterized in that, The filter module group includes a connection structure that cooperates with the standardized interface, and adjacent filter units achieve fluid communication of corresponding oil circuits through the connection structure.

7. The scalable modular stacked filtration system according to claim 6, characterized in that, The connection structure includes an inclined angle connector, which has a first interface and a second interface, and the axis of the first interface and the axis of the second interface form a preset angle greater than 0° and less than 90°.

8. The scalable modular stacked filtration system according to claim 1, characterized in that, The standardized interface includes a quick-release snap-fit ​​interface, and a sealing ring is provided at the quick-release snap-fit ​​interface.

9. The scalable modular stacked filtration system according to claim 1, characterized in that, The drive unit includes a variable frequency motor and a gear pump. The variable frequency motor drives the gear pump to steplessly adjust the suction flow rate of the fluid medium.

10. The scalable modular stacked filtration system according to claim 1, characterized in that, The monitoring unit includes: A multi-source signal acquisition module, including at least one of a pressure sensor, a temperature sensor, and a particulate matter monitoring sensor; The diagnostic module is used to compensate for drift in the signals acquired by the sensors and to identify abnormal states, including at least sensor disconnection, signal loss, or signal exceeding limits. The automatic calibration module is used to perform zero-point correction and flow calibration according to a preset cycle.

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