A cutting fluid slurry delivery system and filtration system

Abstract

The utility model discloses a cutting fluid dirty liquid conveying system and filter system belongs to filter system technical field. The cutting fluid dirty liquid conveying system includes dirty liquid tank and dirty liquid conveying pipe group, and dirty liquid conveying pipe group includes primary conveying pipeline, secondary conveying pipeline and tertiary conveying pipeline, the liquid inlet of primary conveying pipeline is linked with dirty liquid tank, and the liquid outlet extends to filter unit, and every primary conveying pipeline is connected with at least two secondary conveying pipelines, and secondary conveying pipeline is arranged between a plurality of filter tank groups that constitute filter unit, and every secondary conveying pipeline is connected with a plurality of tertiary conveying pipelines, and tertiary conveying pipeline is linked with filter tank in filter tank group. The cutting fluid dirty liquid conveying system compact structure, the degree of integration is high, and the floor area is small, and the reasonable arrangement of multistage pipeline can support the elastic expansion of filter tank group in filter unit, satisfies the demand of centralized filtration and improves the adaptability to different filter systems.

Description

Technical Field

[0001] This utility model relates to the field of filtration system technology, and in particular to a cutting fluid dirty liquid delivery system and filtration system. Background Technology

[0002] In machining processes, metal parts are shaped by using machining equipment to perform turning, milling, boring, and grinding operations on the workpiece blank. These processes generate a large amount of heat and debris, therefore, oil is needed to cool and lubricate the machining equipment and workpiece, and to flush and remove the generated debris, ensuring the stable operation of the machining equipment and the precision of the machined workpiece. Used cooling oil often contains a large amount of metal debris, and must undergo solid-liquid separation and filtration before being recycled.

[0003] The piping layout of a filtration system needs to be designed specifically for the scale of the equipment. For small and medium-sized filtration units, the structural design typically adopts an integrated solution, with the equipment having a compact liquid storage tank and being deployed directly in the area adjacent to the processing machine. The advantages of this layout are: dirty liquid generated by the machine can be directly transported to the liquid storage tank of the filtration equipment via a short dirty liquid pipeline; more importantly, the liquid storage tank and the core filter tank are usually connected by a compact direct connection design or an extremely short pipeline, allowing the dirty liquid to quickly enter the filtration process either inside the equipment or via a very short distance. This not only reduces pressure drop losses during fluid transportation but also facilitates routine maintenance personnel to monitor the equipment nearby.

[0004] However, when upgraded to a centralized filtration system, the equipment configuration shows significant differences: in order to meet the comprehensive filtration needs of multiple units, the filtration system must be equipped with multiple filter tanks and supporting large liquid storage tanks. Furthermore, these filter tanks and liquid storage tanks require complex conveying pipelines, which not only occupy a large area, but also greatly increase the difficulty of space layout due to the complex conveying pipelines. At the same time, the height of the liquid storage tank will also cause spatial interference problems, making the traditional integrated equipment solution that is directly placed next to the processing machine unsuitable for large centralized filtration systems.

[0005] Therefore, there is an urgent need to design a cutting fluid dirty fluid delivery system and a filtration system to solve the above-mentioned technical problems. Utility Model Content

[0006] One objective of this invention is to provide a cutting fluid dirty fluid delivery system that has a compact structure, high integration, and small footprint.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A cutting fluid contaminant delivery system, comprising:

[0009] Dirty liquid tank; and,

[0010] The dirty fluid transport pipeline assembly includes a primary transport pipeline, a secondary transport pipeline, and a tertiary transport pipeline;

[0011] The inlet end of the primary delivery pipeline is connected to the dirty liquid tank, and the outlet end extends to the filtration unit.

[0012] Each of the primary delivery pipelines connects to at least two of the secondary delivery pipelines, and the secondary delivery pipelines are arranged among the plurality of filter tank groups that make up the filter unit;

[0013] Each of the secondary delivery pipelines is connected to several of the tertiary delivery pipelines, and the tertiary delivery pipelines are connected to the filter tanks in the filter tank group.

[0014] As an optional technical solution for the above-mentioned dirty cutting fluid delivery system, the dirty cutting fluid delivery system further includes:

[0015] The filter pump assembly connects the dirty liquid tank and the dirty liquid delivery pipeline assembly. The filter pump assembly includes several filter pumps connected in series or in parallel. The inlet of each filter pump is connected to the dirty liquid tank, and the outlet is connected to the inlet of the primary delivery pipeline.

[0016] As an optional technical solution for the above-mentioned dirty cutting fluid delivery system, the dirty cutting fluid delivery system further includes:

[0017] A dirty liquid collection pipe, one end of which is connected to the outlet of all the filter pumps, and the other end of which is connected to the inlet of the primary delivery pipeline.

[0018] As an optional technical solution for the above-mentioned cutting fluid dirty liquid transportation system, the dirty liquid tank includes a tank body, the tank body is provided with a dirty liquid inlet and a dirty liquid outlet, the lower part of the tank body is a downwardly tapered structure, the dirty liquid outlet is located at the lowest point of the bottom of the tapered structure, and the dirty liquid outlet is connected to the liquid inlet end of the primary transportation pipeline.

[0019] As an optional technical solution for the above-mentioned cutting fluid dirty liquid transportation system, the filtration unit includes at least two layers arranged vertically, and each layer of the filtration unit is equipped with a set of dirty liquid transportation pipes.

[0020] As an optional technical solution for the above-mentioned dirty cutting fluid delivery system, the dirty cutting fluid delivery system further includes:

[0021] The riser pipe has its inlet end connected to the outlet end of the filter pump assembly, and its outlet end connected to the inlet end of the primary conveying pipeline of the upper dirty liquid conveying pipeline assembly.

[0022] Another objective of this invention is to provide a filtration system that is compact in structure, highly integrated, and occupies little space.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] A filtration system includes a filtration unit, a clean liquid delivery system, and the aforementioned cutting fluid / dirty liquid delivery system. The clean liquid delivery system includes a clean liquid delivery pipe assembly and a clean liquid tank. The inlet end of the clean liquid delivery pipe assembly is connected to the filtration outlet of the filtration tank, and the outlet end of the clean liquid delivery pipe assembly is connected to the clean liquid tank.

[0025] As an optional technical solution for the above-mentioned filtration system, the purified liquid delivery pipe assembly includes a first purified liquid branch pipe, a second purified liquid branch pipe, and a purified liquid main pipe.

[0026] The outlet of the purified liquid main pipe is connected to the purified liquid tank, and the inlet of the purified liquid main pipe extends to the filtration unit.

[0027] Each of the main purified liquid pipes is connected to at least two second purified liquid branch pipes, which are arranged among the plurality of filter tank groups.

[0028] Each second purified liquid branch pipe is connected to several first purified liquid branch pipes, and the first purified liquid branch pipes are connected to the filter outlet of the filter tank.

[0029] As an optional technical solution for the above-mentioned filtration system, the second purified liquid branch pipe is located above the secondary delivery pipeline.

[0030] As an optional technical solution for the above-mentioned filtration system, the filtration system further includes:

[0031] A purified liquid supply pipe, wherein the inlet end of the purified liquid supply pipe is connected to the purified liquid tank, and the outlet end is connected to the liquid supply port of the machine; and / or,

[0032] The dirty liquid recovery pipe has its inlet end connected to the machine's return port and its outlet end connected to the dirty liquid inlet of the dirty liquid tank.

[0033] Compared with the prior art, the present invention has at least the following beneficial effects:

[0034] This utility model discloses a dirty fluid delivery system for cutting fluid, comprising a dirty fluid tank and a dirty fluid delivery pipe assembly. The dirty fluid tank holds the dirty fluid, and the dirty fluid delivery pipe assembly delivers the dirty fluid to the filter tanks in the filtration unit. The dirty fluid delivery pipe assembly includes a primary delivery pipe, a secondary delivery pipe, and a tertiary delivery pipe. The inlet end of the primary delivery pipe is connected to the dirty fluid tank, and the outlet end extends to the filtration unit. Each primary delivery pipe connects to at least two secondary delivery pipes, which are arranged among the filter tank assemblies forming the filtration unit. Each secondary delivery pipe connects to several tertiary delivery pipes, which are connected to the filter tanks in the filter tank assembly. By arranging the dirty fluid delivery pipe assembly of the cutting fluid delivery system into multiple stages, the problem of complex piping caused by existing direct-connection pipes can be solved. This results in high integration, a small footprint, and reduced spatial layout difficulty. Simultaneously, the rational arrangement of the multiple stages allows for flexible expansion of the filter tank assemblies in the filtration unit, meeting centralized filtration needs while improving adaptability to different filtration systems.

[0035] The filtration system disclosed in this utility model includes a filtration unit, a purified liquid delivery system, and the aforementioned cutting fluid / dirty liquid delivery system. The purified liquid delivery system comprises a purified liquid delivery pipe assembly and a purified liquid tank. The inlet end of the purified liquid delivery pipe assembly is connected to the filtration outlet of the filtration tank, and the outlet end of the purified liquid delivery pipe assembly is connected to the purified liquid tank. This filtration system features a simple and compact overall spatial layout, high integration, and minimal space occupation. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the filtration system provided in a specific embodiment of the present invention. Figure 1 ;

[0038] Figure 2 This is a partial structural schematic diagram of the cutting fluid dirty fluid delivery system provided in a specific embodiment of this utility model;

[0039] Figure 3 This is a schematic diagram of the structure of the dirty liquid tank provided in a specific embodiment of this utility model;

[0040] Figure 4 This is a schematic diagram of the structure of the filtration system provided in a specific embodiment of the present invention. Figure 2 .

[0041] In the picture:

[0042] 1. Dirty liquid recovery pipe; 2. Dirty liquid inlet; 3. Dirty liquid tank; 4. Dirty liquid outlet; 5. Inspection port; 6. First switch valve; 7. Filter pump; 8. Second switch valve; 9. Primary delivery pipeline; 10. Secondary delivery pipeline; 11. Tertiary delivery pipeline; 12. Third switch valve; 13. Lift pipe; 14. Filter tank assembly; 15. Dirty liquid collection pipe; 16. First clean liquid branch pipe; 17. Second clean liquid branch pipe; 18. Clean liquid main pipe; 19. Liquid supply pump; 20. Fourth switch valve; 21. Fifth switch valve; 22. Clean liquid tank; 23. Clean liquid supply pipe; 24. Elevated platform; 25. Platform plate; 26. Support legs; 27. Ladder. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] This embodiment discloses a cutting fluid dirty liquid delivery system, which is suitable for large centralized filtration systems. It has a compact structure, high integration, and reduces space occupation.

[0050] like Figure 1 and Figure 2 As shown, the dirty fluid delivery system includes a dirty fluid tank 3 and a dirty fluid delivery pipe assembly. The dirty fluid tank 3 is used to hold the dirty fluid; the dirty fluid delivery pipe assembly is used to deliver the dirty fluid to the filter tanks in the filtration unit; the dirty fluid delivery pipe assembly includes a primary delivery pipe 9, a secondary delivery pipe 10, and a tertiary delivery pipe 11, and the dirty fluid tank 3, the primary delivery pipe 9, the secondary delivery pipe 10, the tertiary delivery pipe 11, and the filtration unit are connected in sequence. It should be noted that the "dirty fluid" mentioned in this embodiment refers to the cutting fluid containing solid impurity particles after the machine has been used.

[0051] The primary delivery pipeline 9 is located between the dirty liquid tank 3 and the filtration unit, and is used to deliver the dirty liquid to the area where the filtration unit is located. Specifically, the inlet end of the primary delivery pipeline 9 is connected to the dirty liquid tank 3, and the outlet end extends to the filtration unit. Each primary delivery pipeline 9 is connected to at least two secondary delivery pipelines 10. The secondary delivery pipelines 10 are located between several filter tank groups 14 that make up the filtration unit, and are used to divert the dirty liquid once and deliver it to the area where each filter tank group 14 is located. Each secondary delivery pipeline 10 is connected to several tertiary delivery pipelines 11. The tertiary delivery pipelines 11 are connected to all the filter tanks in the filter tank group 14, and are used to divert the dirty liquid a second time and deliver it to each filter tank in the corresponding filter tank group 14.

[0052] By arranging the dirty fluid conveying pipe group of the cutting fluid dirty fluid conveying system in a multi-stage pipeline configuration, the problem of complex piping caused by the existing direct-connection pipeline can be solved. It has a high degree of integration, a small footprint, and reduces the difficulty of space layout. At the same time, the reasonable arrangement of multi-stage pipelines can support the flexible expansion of the filter tank group 14 in the filter unit, meet the centralized filtration requirements, and improve the adaptability to different filtration systems.

[0053] In this embodiment, the filtration unit includes four rows of filter tank groups 14, with six filter tank groups 14 in each row, and each filter tank group 14 including three filter tanks. Of course, this is just one arrangement shown in the figure. In actual production, the arrangement of filter tanks, filter tank groups 14, and filtration units is not limited to this and can be arranged according to the actual situation.

[0054] The number of tertiary delivery pipelines 11 is the same as the number of filter tank groups 14, and the tertiary delivery pipelines 11 are connected to all the filter tanks in the corresponding filter tank group 14. The tertiary delivery pipelines 11 are used to deliver dirty liquid to each filter tank. This structural arrangement can improve the regularity of the pipeline layout in a large centralized filtration system, making the overall structure compact and highly integrated, thereby reducing the space occupied.

[0055] In this embodiment, the three-stage conveying pipeline 11 is arranged below each filter tank group 14, that is, the filter inlet of the filter tank is located at the bottom of the filter tank, and the liquid outlet of the three-stage conveying pipeline 11 is connected to the filter inlet of the filter tank. The dirty liquid enters the filter tank from bottom to top for filtration and sludge removal.

[0056] To facilitate the transport of dirty fluid from the filter tank to the dirty fluid delivery pipeline assembly, the cutting fluid dirty fluid transport system in this embodiment also includes a filter pump assembly. The dirty fluid tank 3 and the dirty fluid delivery pipeline assembly are connected through the filter pump assembly. Specifically, the filter pump assembly includes several filter pumps 7 connected in series or parallel. The inlet of each filter pump 7 is connected to the dirty fluid tank 3, and the outlet is connected to the inlet of the primary delivery pipeline 9. In this structure, the dirty fluid in the dirty fluid tank 3 is pumped by the filter pumps 7 to the primary delivery pipeline 9, and then transported to each filter tank for filtration after two separate diversions.

[0057] In this embodiment, the cutting fluid contaminated liquid delivery system also includes a contaminated liquid collection pipe 15. One end of the contaminated liquid collection pipe 15 is connected to the outlet of all the filter pumps 7, and the other end is connected to the inlet of the primary delivery pipeline 9. The number of contaminated liquid collection pipes 15 is the same as the number of primary delivery pipelines 9. The contaminated liquid collection pipes 15 are used to collect the contaminated liquid delivered by each filter pump 7 and deliver it uniformly to the primary delivery pipeline 9, thereby avoiding the potential drawbacks of parallel layout of multiple pipelines and improving the integration of the equipment.

[0058] like Figure 3 As shown, the dirty liquid tank 3 includes a tank body with a dirty liquid inlet 2 and a dirty liquid outlet 4. The dirty liquid inlet 2 is located above the dirty liquid outlet 4 and is situated on the top or side wall of the tank body. The lower part of the tank body has a downward-tapering conical structure, and the dirty liquid outlet 4 is located at the lowest point of the conical structure. The dirty liquid outlet 4 is connected to the inlet of the filter pump 7. That is, the lower part of the tank body gradually tapers, and its transverse cross-section gradually decreases from top to bottom, presenting an overall inverted pyramid-shaped geometric feature. Placing the dirty liquid outlet 4 at the lowest point of the tank body prevents sediment from settling at the bottom of the tank and allows as many impurity particles as possible to be drawn into the cutting fluid dirty liquid delivery system for filtration and purification.

[0059] In this embodiment, the tank body is also provided with an inspection port 5 to facilitate the cleaning and maintenance of the dirty liquid tank 3. Specifically, the inspection port 5 can be located on the top of the tank body.

[0060] Optionally, a first switch valve 6 is provided at the dirty liquid outlet 4, which is used to control the opening and closing of the dirty liquid discharge from the dirty liquid tank 3.

[0061] Optionally, a second switching valve 8 is provided at the outlet of the filter pump 7 to facilitate the inspection and maintenance of the filter pump 7.

[0062] Optionally, a third switching valve 12 is provided at the inlet end of the three-stage delivery pipeline 11. The third switching valve 12 is used to control the flow of dirty liquid into the filter tank, thereby enabling individual control of each filter tank group 14.

[0063] The filtration unit comprises at least two layers arranged vertically, with each layer equipped with a corresponding set of dirty liquid delivery pipe assemblies; for example, when the filtration unit comprises two layers, two sets of dirty liquid delivery pipe assemblies are provided. Vertically arranging multiple layers of filtration units in space can increase the processing capacity of the filtration system while reducing the floor space required.

[0064] To facilitate the delivery of contaminated fluid to the upper filtration unit, the cutting fluid contaminated fluid delivery system also includes a riser pipe 13. The riser pipe 13 is at least partially positioned along the height direction. The inlet end of the riser pipe 13 is connected to the outlet end of the filter pump assembly, and the outlet end of the riser pipe 13 is connected to the inlet end of the primary delivery pipeline 9 of the upper contaminated fluid delivery pipeline assembly. It should be noted that this filter pump assembly requires an additional set and is not the same as the filter pump assembly used in the lower filtration unit.

[0065] To achieve the spatial arrangement of multi-layer filter units, such as Figure 1 and Figure 4 As shown, the cutting fluid contaminated liquid delivery system also includes an elevated platform 24, which is used to house the upper-level filter units. The elevated platform 24 includes platform plates 25 and supports 26. The platform plates 25 are used to house the upper-level filter units, and one end of each support 26 is connected to the bottom of the platform plate 25, while the other end rests against the ground, providing support. It should be noted that the number of platform plates 25 layers can be set according to the number of filter unit layers; that is, each platform plate 25 corresponds to one filter unit.

[0066] Furthermore, the elevated platform 24 also includes a ladder 27, one end of which is connected to the platform 25, and the other end rests against the ground for personnel to access higher floors.

[0067] It should be noted that this embodiment uses a two-layer filter unit as an example. In actual production, the number of filter units may be more than two, and may be three or more. The number of layers of the overhead platform 24 can be adjusted accordingly, which will not be elaborated here.

[0068] This embodiment also discloses a filtration system that has a compact structure, high integration, and small footprint.

[0069] The filtration system includes the aforementioned dirty cutting fluid delivery system, filtration unit, and clean fluid delivery system. The outlet of the three-stage delivery pipeline 11 of the dirty cutting fluid delivery system is connected to the filter inlet of the filter tank in the filtration unit, and the filter outlet of the filter tank is connected to the clean fluid delivery system. It should be noted that the "clean fluid" mentioned in this embodiment refers to clean cutting fluid that has been filtered and purified by the filtration unit and does not contain solid impurity particles.

[0070] Specifically, the purified liquid delivery system includes a purified liquid tank 22 and a purified liquid delivery pipe assembly. The inlet end of the purified liquid delivery pipe assembly is connected to the filter outlet of the filter tank, and the outlet end is connected to the purified liquid tank 22. The purified liquid delivery system delivers the purified liquid after filtration by the filter unit to the purified liquid tank 22 for storage, and can be returned to the machine for recycling.

[0071] In this embodiment, the purified liquid delivery pipe assembly includes a first purified liquid branch pipe 16, a second purified liquid branch pipe 17, and a purified liquid main pipe 18. The filtration unit, the first purified liquid branch pipe 16, the second purified liquid branch pipe 17, the purified liquid main pipe 18, and the purified liquid tank 22 are connected in sequence.

[0072] Specifically, the main purified liquid pipe 18 is located between the purified liquid tank 22 and the filtration unit, and is used to transport purified liquid to the purified liquid tank 22. Specifically, the outlet end of the main purified liquid pipe 18 is connected to the purified liquid tank 22, and the inlet end of the main purified liquid pipe 18 extends to the filtration unit; each main purified liquid pipe 18 is connected to at least two second purified liquid branch pipes 17, and the second purified liquid branch pipes 17 are located between several filtration tank groups 14; each second purified liquid branch pipe 17 is connected to several first purified liquid branch pipes 16, and the first purified liquid branch pipes 16 are connected to the filtration outlet of the filtration tank.

[0073] The first purified liquid branch pipe 16 is used to transport and collect the purified liquid to the second purified liquid branch pipe 17. Optionally, the number of first purified liquid branch pipes 16 is the same as the number of filter tank groups 14, and the inlet end of each first purified liquid branch pipe 16 is connected to the filter outlet of all filter tanks in the corresponding filter tank group 14. Further optionally, the first purified liquid branch pipes 16 are arranged above the corresponding filter tank group 14, and the dirty liquid is filtered in the filter tank from bottom to top. After filtration, the purified liquid enters the first purified liquid branch pipe 16 from the filter outlet of the filter tank. The second purified liquid branch pipe 17 is arranged between several filter tank groups 14 and is used to transport and collect the purified liquid to the purified liquid main pipe 18 for a second time. Through the reasonable arrangement of multi-stage purified liquid pipes in the effective space, the purified liquid after filtration by the filter unit is collected and transported to the purified liquid tank 22 for storage, resulting in a compact structure and saving space.

[0074] In the above structure, the main purified liquid pipe 18 and the primary delivery pipe 9 are respectively located at both ends of the filtration unit, and extend parallel to each other. The second purified liquid branch pipe 17 is located above the secondary delivery pipe 10. That is, the number of second purified liquid branch pipes 17 and secondary delivery pipes 10 is the same, and they are arranged vertically and parallel to each other. This structural arrangement can improve the compactness of the pipeline layout within a limited space, reduce space occupation, improve space utilization, and is conducive to improving the integration of the filtration system. To further save space and improve structural compactness, the second purified liquid branch pipe 17 is located directly above the secondary delivery pipe 10.

[0075] In this embodiment, the filtration system further includes a purified liquid supply pipe 23, with its inlet end connected to the purified liquid tank 22 and its outlet end connected to the machine's liquid supply port. By providing the purified liquid supply pipe 23, the purified liquid in the purified liquid tank 22 can be transported to the machine for recycling.

[0076] In this embodiment, the filtration system further includes a dirty liquid recovery pipe 1, which connects the machine and the dirty liquid tank 3. Specifically, the inlet end of the dirty liquid recovery pipe 1 is connected to the return port of the machine, and the outlet end of the dirty liquid recovery pipe 1 is connected to the dirty liquid inlet 2 of the dirty liquid tank 3. Dirty liquid from the machine after use enters the dirty liquid tank 3 through the dirty liquid recovery pipe 1 from the dirty liquid inlet 2.

[0077] Furthermore, the purified liquid delivery system also includes a supply pump 19, which is connected to the purified liquid tank 22 via a pipeline. The outlet of the supply pump 19 is connected to the inlet of the purified liquid supply pipe 23. By setting up the supply pump 19, the purified liquid is pumped from the purified liquid tank 22 to the machine.

[0078] Optionally, the liquid supply pump 19 is provided with a fourth switch valve 20 at the liquid outlet end to facilitate the maintenance and repair of the liquid supply pump 19.

[0079] Optionally, the outlet end of the clean liquid tank 22 is provided with a fifth switch valve 21, which is used to control the flow of clean liquid in the clean liquid tank 22.

[0080] The circulating filtration process of the cutting fluid in the filtration system of this embodiment is as follows: machine base → dirty liquid recovery pipe 1 → dirty liquid tank 3 → filter pump 7 → dirty liquid collection pipe 15 → primary delivery pipe 9 → secondary delivery pipe 10 → tertiary delivery pipe 11 → filtration unit → first clean liquid branch pipe 16 → second clean liquid branch pipe 17 → clean liquid main pipe 18 → clean liquid tank 22 → liquid supply pump 19 → clean liquid supply pipe 23 → machine base.

[0081] After use, the cutting fluid (dirty fluid) enters the dirty fluid tank 3 through the dirty fluid recovery pipe 1 from the dirty fluid inlet 2. The cutting fluid flowing out from the dirty fluid outlet 4 is transported to the filtration unit for filtration by the filter pump 7 through the dirty fluid delivery pipe assembly. The cutting fluid flows sequentially through the collection pipe, the primary delivery pipe 9, the secondary delivery pipe 10, and the tertiary delivery pipe 11, and finally enters the filter tank through the filter inlet. Under the action of the filter element in the filter tank, solid particles are effectively intercepted, and clean cutting fluid (clean fluid) flows out from the filter outlet of the filter tank.

[0082] After the clean cutting fluid flows out of the filter outlet of the filter tank, it passes through the first clean fluid branch pipe 16, the second clean fluid branch pipe 17 and the clean fluid main pipe 18 in sequence, and finally enters the clean fluid tank 22 for storage.

[0083] The cutting fluid in the clean liquid tank 22 is transported to the machine for recycling through the clean liquid supply pipe 23 by the liquid supply pump 19.

[0084] The filtration system in this embodiment has at least the following technical effects:

[0085] 1. By arranging multi-stage dirty liquid conveying pipelines in the cluster of filter tank groups 14, the problem of complex pipelines caused by traditional direct-connection pipelines is avoided. At the same time, the multi-stage pipelines support the flexible expansion of parallel filter tank groups 14, meeting the centralized filtration needs while maintaining the independent control of each filter tank group 14.

[0086] 2. Segmented on / off valves are installed at multi-stage pipeline nodes to support independent shutdown and maintenance of dirty liquid tank 3, filter pump 7 and individual filter tank group 14;

[0087] 3. The dirty liquid tank 3 and the overhead platform 24 work together to achieve a multi-layer vertical arrangement, which significantly saves floor space and solves the problem of height interference;

[0088] 4. The inverted pyramid-shaped dirty liquid tank 3 effectively prevents solid sedimentation and ensures stable delivery of dirty liquid.

[0089] The filtration system, consisting of a cutting fluid dirty liquid delivery system, a clean liquid delivery system, and related equipment components, has a simpler and more compact overall spatial layout, greatly improving the integration of large-scale centralized filtration systems and reducing space occupation.

[0090] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0091] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., 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 utility model. 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.

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