An adaptive multi-stage filtration device

Abstract

The utility model discloses a kind of self-adaptive multi-stage filtering equipment, belong to liquid filtering technical field.The technical scheme adopted by the utility model is a kind of self-adaptive multi-stage filtering equipment, including at least two groups of filtering units, the filtering unit is equipped with partition to divide into raw liquid cavity and filtrate cavity in filtering unit inner chamber, the raw liquid cavity is communicated with filtrate cavity along the end of liquid flow direction, the raw liquid cavity is equipped with filter assembly, more than two the filtering unit head-to-tail joint;The utility model is connected with turbidity monitoring unit and solenoid valve control by multistage filtering unit series structure, realizes according to medium turbidity dynamic adjustment filtering path, reduces invalid filtering level participation, reduces high-precision filter material loss, simultaneously optimizes sealing structure and filter core arrangement mode, with the advantages of improving filtering efficiency, reducing filter material loss, prolonging filter core life and realizing dynamic path optimization.

Description

Technical Field

[0001] This utility model belongs to the field of liquid filtration technology, specifically relating to an adaptive multi-stage filtration device. Background Technology

[0002] Multistage filtration technology is widely used to improve the precision of liquid purification. Traditional multistage filtration equipment typically uses a series fixed structure, where the liquid flows sequentially through multiple filtration units, each equipped with filter cartridges of different precision (e.g., arranged progressively from coarse to fine). While this structure can achieve step-by-step purification, it has the following significant drawbacks: Inefficiency and resource waste: Regardless of the turbidity of the medium, the medium to be filtered must flow through all filtration stages. When the turbidity of the medium is low or the pre-filter has effectively removed impurities, the subsequent high-precision filter still needs to participate in the filtration process, resulting in ineffective consumption of high-precision filter media and energy waste (such as pump pressure loss).

[0003] Uneven filter lifespan: The pre-filter is overloaded due to its primary task of trapping impurities and requires frequent replacement; although the post-filter may have a lower actual processing load, its lifespan is still forcibly consumed due to its fixed series structure, resulting in higher overall maintenance costs.

[0004] Lack of dynamic adaptability: Existing systems cannot intelligently adjust the filtration path based on real-time changes in media turbidity (such as turbidity fluctuations). When the media turbidity suddenly improves, the system still operates according to the preset path and cannot automatically shorten the filtration process to save resources; conversely, when the media turbidity deteriorates, it cannot intelligently enhance the downstream filtration capacity.

[0005] Maintenance relies on manual judgment: filter replacement or process adjustment usually depends on periodic inspection or experience judgment, which is lagging and can easily lead to filter exceeding its service life (affecting the media filtration effect) or premature replacement (increasing costs).

[0006] In addition, traditional equipment also has shortcomings in structural design: the connection between multi-stage filtration units is simple, and there is a lack of integrated transition box structure to optimize liquid collection and distribution; the housing sealing performance is insufficient, which can easily lead to liquid leakage; the installation method of the filter components is fixed, making it difficult to adapt to changes in filtration requirements under different working conditions. Utility Model Content

[0007] This invention provides an adaptive multi-stage filtration device to solve at least one of the above-mentioned technical problems.

[0008] The technical solution adopted in this utility model is as follows: An adaptive multi-stage filtration device includes at least two sets of filtration units. Each filtration unit has a partition plate to divide its internal cavity into a raw liquid cavity and a filtered liquid cavity. The raw liquid cavity is connected to the filtered liquid cavity at the end along the liquid flow direction. A filtration assembly is provided in the raw liquid cavity. Two or more filtration units are connected end to end, and the filtered liquid cavity of the previous filtration unit is connected to the raw liquid cavity of the next filtration unit through a conduit. Each filtration unit is also provided with a drain pipe connected to the filtered liquid cavity. A turbidity monitoring unit is provided in the raw liquid cavity. Solenoid valves are provided on both the conduit and the drain pipe.

[0009] Furthermore, this application also proposes that it includes a transition box, with each drain pipe connected to the transition box, and the transition box is equipped with an output pipe.

[0010] Furthermore, this application also proposes that the filter unit includes a housing, with a sealing cover plate provided on the outer end face of the housing at the outer end, and an input pipe provided on the cover plate of the uppermost housing.

[0011] Furthermore, this application also proposes that sealing flanges are provided at both ends of the shell, and adjacent shells are connected by a flange seal.

[0012] Furthermore, this application also proposes that the filter assembly includes a sleeve, and a filter element is disposed inside the sleeve.

[0013] Furthermore, this application also proposes that the pore size of several linearly arranged filter elements decreases sequentially along the arrangement direction.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. This solution, by setting independent monitoring and valve control in each filtration unit, can selectively enable or skip specific filtration stages based on real-time turbidity data. This dynamic adjustment mechanism avoids ineffective filtration operations, ensuring that the filter element only operates when necessary, significantly different from the rigid process control of traditional equipment.

[0015] Through the above technical solution, this application achieves intelligent optimization of the filtration path, effectively reducing the wear of high-precision filter media under low turbidity conditions and balancing the workload of each filter element. Simultaneously, the system can automatically adjust the purification process according to changes in the media state, avoiding the lag of manual intervention and reducing maintenance costs caused by excessive use or premature replacement of filter elements. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model; Figure 2 This is one of the structural schematic diagrams of the filter unit in this utility model; Figure 3 This is the second schematic diagram of the filter unit in this utility model; Figure 4 This is the third schematic diagram of the filter unit in this utility model.

[0017] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0018] In the attached diagram: 1. Shell; 11. Raw liquid chamber; 12. Filtrate chamber; 121. Conduit; 122. Drain pipe; 2. Sleeve; 21. Filter element; 3. Transition box; 31. Output pipe; 4. Cover plate; 41. Input pipe. Detailed Implementation

[0019] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 utility model 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 utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figures 1 to 4 An adaptive multi-stage filtration device includes at least two sets of filtration units. Each filtration unit has a partition plate to divide its internal cavity into a raw liquid cavity 11 and a filtered liquid cavity 12. The end of the raw liquid cavity 11 along the liquid flow direction is connected to the filtered liquid cavity 12. A filtration assembly is provided in the raw liquid cavity 11. Two or more filtration units are connected end to end, and the filtered liquid cavity 12 of the previous filtration unit is connected to the raw liquid cavity 11 of the next filtration unit through a conduit 121. The filtration unit is also provided with a drain pipe 122 connected to the filtered liquid cavity 12. A turbidity monitoring unit is provided in the raw liquid cavity 11. Solenoid valves are provided on both the conduit 121 and the drain pipe 122.

[0025] As will be understood by those skilled in the art, a filter unit refers to a functional module that independently completes primary filtration, specifically implemented using a housing 1 structure with a sealing flange, facilitating multi-stage series assembly. A partition plate refers to a plate-like structure that divides the cavity into two functional areas, specifically implemented using welded or bolted metal partitions, forming a raw liquid treatment area and a filtered liquid collection area. A conduit 121 refers to a fluid channel connecting adjacent filter units, specifically implemented using a stainless steel corrugated pipe, and connected to the unit housing 1 via a flange. A drain pipe 122 refers to a pipe that discharges the liquid from the filtered liquid chamber 12, specifically implemented using a rigid pipe with quick-connect fittings, connected to the transition box 3 or directly output. A turbidity monitoring unit refers to a device for real-time detection of liquid turbidity, specifically implemented using an optical scattering sensor, installed at the end of the raw liquid chamber 11 near the filter assembly. A solenoid valve refers to a fluid switch controlled by an electrical signal, specifically implemented using a two-position three-way solenoid valve, switching the liquid flow direction based on monitoring data.

[0026] Specifically, the liquid enters from the raw liquid chamber 11 of the first-stage filtration unit, is purified by the filtration components, and then enters the filtered liquid chamber 12. When the turbidity monitoring unit detects that the liquid cleanliness reaches a set threshold, it closes the solenoid valve on the control conduit 121 and simultaneously opens the drain valve 122, allowing the qualified liquid to be directly discharged from the system. If the turbidity does not meet the threshold, the valve on the conduit 121 remains open, and the liquid flows into the next stage filtration unit for further processing. This process circulates through each stage of the unit until the liquid meets the final purification requirements. Through step-by-step judgment and path switching, the system can dynamically select the number of units participating in the filtration process.

[0027] Compared to existing technologies, traditional equipment uses a fixed series structure, requiring all filtration units to flow regardless of the medium's state. This solution, however, by setting independent monitoring and valve control in each filtration unit, can selectively activate or skip specific filtration stages based on real-time turbidity data. This dynamic adjustment mechanism avoids ineffective filtration operations, ensuring that filter element 21 only operates when necessary, significantly different from the rigid process control of traditional equipment.

[0028] Through the above technical solution, this application achieves intelligent optimization of the filtration path, effectively reducing the wear of high-precision filter media under low turbidity conditions and balancing the workload of each filter element 21. Simultaneously, the system can automatically adjust the purification process according to changes in the media state, avoiding the lag of manual intervention and reducing maintenance costs caused by overuse or premature replacement of filter elements 21.

[0029] As a preferred embodiment of this application, refer to Figure 1The system also includes a transition box 3, with each drain pipe 122 connected to it. The transition box 3 is equipped with an output pipe 31. The transition box 3 is an independent container for collecting filtrate from multiple filtration units. It can be constructed using a welded stainless steel body or a one-piece molded engineering plastic structure, with internal guide channels to prevent liquid impact and mixing. The drain pipe 122 connects the filtrate chamber 12 to the transition box 3, and can be connected using flanges or quick-release clamps. The inner wall of the pipe can be coated with an anti-corrosion coating to adapt to different media characteristics. The output pipe 31 is the terminal pipe that discharges the collected liquid from the transition box 3. It can be controlled using an adjustable flow butterfly valve or ball valve, with the pipe diameter selected according to flow requirements. The filtrate chamber 12 of each filtration unit is connected to the transition box 3 via the drain pipe 122. The transition box 3, as a centralized collection container, stores the filtrate produced by each unit and discharges it via the output pipe 31. When the solenoid valve in the filtrate chamber 12 of a certain filtration unit is opened due to turbidity monitoring data, the filtrate enters the transition tank 3 through the corresponding drain pipe 122. After mixing with the filtrate from other units, it is transported to the downstream treatment stage through the output pipe 31. A buffer baffle can be installed inside the transition tank 3 to reduce turbulence caused by differences in liquid flow rate, ensuring uniform mixing of different batches of filtrate. The transition tank 3 enables centralized collection of filtrate, reducing the number of external pipelines and avoiding pressure fluctuations caused by multiple independent discharges, thus making the system more stable. This application simplifies the piping layout of multi-stage filtration equipment, reduces the risk of leakage caused by multiple independent discharges, and reduces pumping energy consumption through centralized filtrate collection. The transition tank 3 can also serve as a temporary storage unit, maintaining continuous system operation during filter element 21 replacement and preventing overall process interruption due to single unit shutdown.

[0030] As one specific implementation of the filtering unit, refer to Figures 2-4The filter unit includes a housing 1, with sealing covers 4 on the outer end faces of each housing 1. An inlet pipe 41 is located on the cover 4 at the top of the housing 1. The housing 1 is the main structure constituting the filter unit, and can be made of stainless steel or engineering plastic. It houses the filter components and forms a separation space between the raw liquid chamber 11 and the filtered liquid chamber 12. The housing 1 is modularly assembled through a split design, allowing for easy adjustment of the number of filter units according to actual needs. The sealing cover 4 is a closed component covering the end face of the housing 1, which can be achieved using a flange connection with a sealing ring. It seals both ends of the housing 1 to prevent liquid leakage and provides a fixed interface for external pipe connections. The outer end of the housing 1 forms an independent unit boundary through the sealing cover 4, ensuring pressure isolation between units in multi-stage series connection. The inlet pipe 41 is a liquid inlet channel located on the top cover 4 of the housing 1, and can be a metal pipe with a threaded interface. It is used to introduce the medium to be filtered into the raw liquid chamber 11 of the first-stage filter unit. The input pipe 41 is located on the cover plate 4 of the uppermost housing 1, allowing the liquid to flow from top to bottom and reducing pumping energy consumption by utilizing gravity assistance. The housing 1 serves as the basic structure of the filter unit, with its two ends forming closed spaces via sealing cover plates 4. When multiple housings 1 are stacked vertically, the outermost housings 1 achieve end sealing via the sealing cover plates 4, while the middle housings 1 are interconnected via flanges. The uppermost housing 1 cover plate 4 houses the input pipe 41, through which the liquid to be filtered enters the first-stage raw liquid chamber 11. This split-type housing 1 design allows for the individual disassembly and maintenance of any filter unit without interrupting the entire system. For example, when a certain stage filter element 21 needs replacement, only the sealing cover plate 4 of the corresponding housing 1 needs to be removed to retrieve the filter element 21 assembly, without disassembling adjacent units. This solution, through the split-type housing 1 and the removable sealing cover plate 4, achieves modular maintenance, significantly shortening maintenance time. Furthermore, in traditional equipment, the input pipe 41 is often located on the side or bottom, which can easily cause turbulent liquid flow. This solution integrates the input pipe 41 into the top cover plate 4, utilizing gravity to allow the liquid to smoothly enter the raw liquid chamber 11, reducing flow resistance. Through the above technical solutions, this application achieves rapid disassembly and maintenance of the filter unit, reducing the complexity of filter element 21 replacement; the split housing 1 design ensures independent sealing of each stage of the filter unit, preventing liquid cross-flow; the optimized layout of the top input pipe 41 optimizes the liquid flow path, reducing pumping pressure loss, thereby extending the overall service life of the filtration system.

[0031] As a preferred example of housing 1, refer to Figures 1-4The housing 1 has sealing flanges at both ends, and adjacent housings 1 are connected by flange seals. The sealing flanges at both ends of the housing 1 form a standardized mating interface, and the flanges of adjacent housings 1 are fastened with bolts to form a continuous flow channel. When it is necessary to expand the number of filtration stages, the system expansion can be completed simply by aligning and tightening the flange of the new housing 1 with the flange of the existing housing 1. In maintenance scenarios, operators can remove the flange connecting bolts of a specific housing 1 to replace the filter element 21 inside that housing 1 without disassembling the entire equipment. The sealing gasket at the flange connection can withstand the system working pressure, preventing seal failure due to pressure fluctuations. After adopting flange sealing connection, a detachable modular structure is formed between the housings 1, which can not only ensure the sealing performance of the system, but also realize the quick replacement or addition or removal of filter units, significantly improving equipment maintenance efficiency. This application effectively solves the maintenance difficulties caused by the fixed connection method of traditional equipment, realizes the quick disassembly and assembly of filter units through standardized flange interfaces, reduces equipment maintenance complexity while ensuring sealing reliability, and extends the service life of key components.

[0032] As a preferred example of the filtering component in this application, see [reference] Figure 2 The filter assembly includes a sleeve 2, within which a filter element 21 is housed. The sleeve 2 is a rigid support structure that encloses the filter element 21; it can be a hollow tube made of stainless steel or engineering plastic, used to fix the position of the filter element 21 and prevent it from shifting due to liquid impact. The filter element 21 is a porous filter medium, specifically made of sintered metal fibers, ceramics, or polymer materials, used to intercept solid particles in the liquid.

[0033] Specifically, the sleeve 2 is vertically installed inside the raw liquid chamber 11, and the filter element 21 is coaxially nested inside the sleeve 2. When the liquid enters the raw liquid chamber 11, it flows along the annular channel between the outer wall of the sleeve 2 and the inner wall of the chamber, and then enters the filtered liquid chamber 12 through the pores of the filter element 21. The rigid structure of the sleeve 2 prevents the filter element 21 from being deformed under pressure, and the pore size of the filter element 21 can be selected according to actual needs, for example, using a pore size gradient configuration ranging from 5 micrometers to 50 micrometers. This solution, through the nested design of the sleeve 2 and the filter element 21, ensures the positioning accuracy of the filter element 21 and reduces the risk of damage to the filter element 21 caused by fluid shear force. It achieves stable fixation and directional filtration of the filter element 21, avoids the decrease in filtration efficiency caused by the displacement of the filter element 21, and simplifies the replacement operation of the filter element 21. During maintenance, only the sleeve 2 needs to be removed to take out the filter element 21, without the need to disassemble the entire filter unit.

[0034] Additionally, it should be noted that the pore size of the linearly arranged filter elements 21 decreases progressively along the arrangement direction. This progressive decrease in pore size means that the filtration accuracy of the filter elements 21 increases step-by-step along the liquid flow direction. This can be achieved by using a gradient densification of the polypropylene fiber layers or a step-by-step reduction in the pore size of the ceramic membrane. This design creates a progressive interception mechanism through differences in physical structure.

[0035] As the liquid flows through the linearly arranged filter elements 21, coarse particulate impurities are first trapped by the larger-pore-diameter filter element 21 at the front end. The remaining fine particles then flow with the liquid into the next stage of smaller-pore-diameter filter elements 21. Because the pore size continuously decreases along the flow direction, each filter element 21 only processes impurities within a specific particle size range that were not filtered in the previous stage, thus preventing the high-precision filter element 21 from prematurely participating in the coarse filtration process. When the turbidity monitoring unit detects a decrease in the concentration of liquid impurities, the system can automatically close the solenoid valves of subsequent filtration units, allowing the compliant liquid to be directly discharged through the drain pipe 122, reducing ineffective filtration stages.

[0036] The above technical solution achieves dynamic optimization of the filtration path, reducing the frequency of use of the high-precision filter element 21 while ensuring filtration accuracy, thus extending its service life and reducing maintenance costs. Simultaneously, this structure forces a graded interception mechanism through physical gradient design, avoiding overlap in the filtration functions of filter elements 21 with different precision levels and improving impurity removal efficiency.

[0037] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0038] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0039] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An adaptive multi-stage filtration device, characterized in that, It includes at least two sets of filter units. Each filter unit is provided with a partition plate to divide the inner cavity of the filter unit into a raw liquid chamber (11) and a filtered liquid chamber (12). The end of the raw liquid chamber (11) along the liquid flow direction is connected to the filtered liquid chamber (12). The raw liquid chamber (11) is provided with a filter assembly. Two or more filter units are connected end to end, and the filtered liquid chamber (12) of the previous filter unit is connected to the raw liquid chamber (11) of the next filter unit through a conduit (121). The filter unit is also provided with a drain pipe (122) connected to the filtered liquid chamber (12). The raw liquid chamber (11) is provided with a turbidity monitoring unit. Both the conduit (121) and the drain pipe (122) are provided with solenoid valves.

2. The adaptive multi-stage filtration device according to claim 1, characterized in that, It also includes a transition box (3), each of the drain pipes (122) is connected to the transition box (3), and the transition box (3) is provided with an output pipe (31).

3. The adaptive multi-stage filtration device according to claim 1, characterized in that, The filter unit includes a housing (1), and a sealing cover plate (4) is provided on the outer end face of the housing (1) located at the outer end. An input pipe (41) is provided on the cover plate (4) of the housing (1) located at the uppermost end.

4. The adaptive multi-stage filtration device according to claim 3, characterized in that, Both ends of the housing (1) are provided with sealing flanges, and adjacent housings (1) are connected by flange sealing.

5. The adaptive multi-stage filtration device according to claim 3, characterized in that, The filter assembly includes a sleeve (2) and a filter element (21) is provided inside the sleeve (2).

6. The adaptive multi-stage filtration device according to claim 5, characterized in that, The pore size of several linearly arranged filter elements (21) decreases gradually along the arrangement direction.

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