A smart rotating cutting fluid filtration system

Abstract

This utility model discloses an intelligent rotating cutting fluid filtration system, including a clean fluid tank, multiple filter tanks connected to the clean fluid tank, and a rotating control unit. The rotating control unit is signal-connected to a liquid level detection unit and an execution drive unit. The liquid level detection unit is used to detect the real-time liquid level data of the clean fluid tank and send it to the control unit. The rotating control unit has a pre-stored liquid level threshold range [L, H] of the clean fluid tank and is configured to: receive real-time liquid level data and determine whether the current liquid level value X of the clean fluid tank deviates from the liquid level threshold range [L, H]; when X > H, generate a first control command; when X < L, generate a second control command; the execution drive unit is electrically connected to the control valve or pump of each filter tank and is configured to: receive the control command of the rotating control unit and close some filter tanks according to the first control command, or open some standby filter tanks according to the second control command.

Description

Technical Field

[0001] This utility model belongs to the field of centralized filtration technology, specifically an intelligent rotating cutting fluid filtration system. Background Technology

[0002] Centralized filtration systems typically consist of multiple parallel filtration units, with the core function of continuously and stably supplying high-purity working fluids to precision manufacturing equipment (such as cutting and cleaning machines). The system operates under both full-load and partial-load conditions. During partial-load operation, operators must manually activate a certain number of filtration units based on experience or random decision-making, according to the day's production needs. However, this control method has significant drawbacks: it easily leads to a severe imbalance in the utilization rate of each filtration unit—some units bear excessive load due to frequent activation, while others remain idle for extended periods.

[0003] To address the aforementioned issues, the applicant provides a rotation control system based on the cumulative runtime of filter units. Upon system startup, the system is manually analyzed to determine the required number of filter units for current production needs. Then, based on the cumulative runtime of the filter units, the system manually selects and activates several filter units with the shortest cumulative runtime, and controls the corresponding inlet valves accordingly. This approach improves the load balance of each filter unit to some extent. However, this method has two main problems: First, manually analyzing production needs to determine the required number of filter units can introduce judgment errors and also involve a certain degree of randomness. For example, if the filtration demand determines that 10-12 filter units need to be turned on, then 10, 11 or 12 units may be selected, resulting in an inaccurate number of filter units actually turned on and running. Secondly, this type of system is only suitable for situations where the filtration demand remains constant. When the filtration conditions change during system operation (such as changes in water quality or fluctuations in flow demand), or when some filtration units change status or experience temporary malfunctions, the system cannot respond to real-time changes and adjust autonomously. For example, when demand increases, the risk of insufficient liquid supply increases; when demand decreases, unnecessary energy consumption continues. If the system relies on frequent manual intervention by operators to start and stop the filtration units, it lacks intelligence and is susceptible to human error or operational lag, leading to the failure of the rotation logic and disrupting the load balance, thus again increasing the risk of system instability. Summary of the Invention

[0004] Purpose of the utility model: To address the shortcomings of current control methods, this utility model proposes an intelligent rotating cutting fluid filtration system.

[0005] Technical solution: An intelligent rotating cutting fluid filtration system, comprising a clean liquid tank, multiple sets of filter tank groups communicated with the clean liquid tank, and a rotation control unit, wherein the rotation control unit is in signal connection with a liquid level detection unit and an execution drive unit respectively; The liquid level detection unit is configured to detect real-time liquid level data of the clean liquid tank and send the data to the control unit; A liquid level threshold range [L, H] of the clean liquid tank is pre-stored in the rotation control unit, and the rotation control unit is configured to: receive the real-time liquid level data, and judge whether the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H]; generate a first control instruction when X>H; generate a second control instruction when X<L; The execution drive unit is electrically connected to the control valve or pump of each filter tank group, and is configured to: receive the control instruction of the rotation control unit, and close part of the filter tank groups according to the first control instruction, or start part of the standby filter tank groups according to the second control instruction.

[0006] Further, a liquid level deviation percentage threshold Δ% is also pre-stored in the rotation control unit, and the rotation control unit is configured to: after determining that the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H], calculate the deviation percentage of the current liquid level; if the current liquid level deviation percentage is greater than or equal to the liquid level deviation percentage threshold Δ%, generate a corresponding control instruction.

[0007] Further, when the current liquid level value X of the clean liquid tank is greater than H, the deviation percentage of the current liquid level is (X - H) / H * 100%; when the current liquid level value X of the clean liquid tank is less than L, the deviation percentage of the current liquid level is (L - X) / L * 100%.

[0008] Further, the rotation control unit comprises a processor and a memory electrically connected thereto; The liquid level threshold range [L, H] and the liquid level deviation percentage threshold Δ% are stored in the memory; The processor is configured to: receive the real-time liquid level data, and execute the judgment on whether the current liquid level value X deviates from the liquid level threshold range [L, H]; after determining that X deviates from [L, H], perform the following operations: If X>H, calculate the deviation percentage P1 = (X - H) / H × 100%; If X<L, calculate the deviation percentage P2 = (L - X) / L × 100%; And judge whether P1 or P2 is greater than or equal to Δ%, and if the judgment result is yes, generate a corresponding control instruction.

[0009] Furthermore, the system also includes a filter pump matched to each of the filter tank groups, and the execution drive unit is electromechanically connected to each of the filter pumps; The rotation control unit is configured to: retrieve the cumulative runtime data of each filter pump; when a filter tank group shutdown operation needs to be performed, select at least one filter pump with the longest cumulative runtime and instruct the execution drive unit to shut down the selected filter pump; when a filter tank group opening operation needs to be performed, select at least one filter pump with the shortest cumulative runtime from all the filter pumps in the stopped state and instruct the execution drive unit to open the selected filter pump.

[0010] Furthermore, the system also includes switching valves installed on the inlet and outlet pipelines of each filter tank group. The execution drive unit is electromechanically connected to each of the switching valves and is configured to: receive instructions from the rotation control unit to open or close a specific filter pump, invoke the virtual matching relationship between the filter pump and the switching valve, and synchronously drive the corresponding filter pump and its associated switching valve to perform opening or closing actions.

[0011] Furthermore, the switching valve includes a first switching valve and a second switching valve. The filter tank assembly is connected to the dirty liquid tank through the filter pump and the first switching valve, and to the clean liquid tank through the second switching valve.

[0012] Furthermore, the system also includes an electronic control unit, which is electrically connected to the execution drive unit; the electronic control unit receives instructions from the execution drive unit and controls the power supply to and from the filter pump and the switching valve.

[0013] Furthermore, the system also includes a timing unit for accumulating the running time of each filter pump; and a data storage unit for storing and updating the accumulated running time data of each filter pump.

[0014] Furthermore, the virtual matching relationship between the filter pump and the switching valve is a virtual mapping relationship table between the filter pump and the switching valve, which is stored in the data storage unit.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) This utility model uses a liquid level detection unit to feed back the system operating status with the liquid level index of the clean liquid tank. By using a rotating control unit and an execution drive unit, the system operating status can be automatically and intelligently adjusted in a timely manner based on the liquid level data. In particular, when the filtration conditions of the centralized filtration system change (such as changes in water quality, fluctuations in flow demand, etc.) or when some filtration units change status / temporary failures occur, this utility model can significantly reduce the error of manual intervention and improve the load balance of the centralized filtration system. (2) This utility model also uses the rotation control unit to effectively avoid the risk of load imbalance caused by delays or misjudgments due to manual operation based on liquid level data and the cumulative running time of the filter pump group, combined with preset logic, so as to achieve a dynamic balance of continuous liquid supply demand and greatly improve the efficiency and overall stability of the system in long-term operation. Attached Figure Description

[0016] Figure 1 A block diagram of an intelligent rotating cutting fluid filtration system; Figure 2 A timing diagram of an intelligent rotating cutting fluid filtration system; Figure 3 This is a schematic diagram of the filter unit structure; Figure 4 It consists of a cluster of three parallel filtering units. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will further describe the intelligent rotating cutting fluid filtration system proposed by this utility model in conjunction with the accompanying drawings and embodiments.

[0018] Example 1: This utility model embodiment proposes an intelligent rotating cutting fluid filtration system, including a clean fluid tank, multiple sets of filter tanks connected to the clean fluid tank, and a rotating control unit, such as... Figure 1 As shown, the rotary control unit is connected to the liquid level detection unit and the actuation drive unit via signals.

[0019] In this embodiment of the invention, the liquid level detection unit is used to detect the real-time liquid level data of the clean liquid tank and send it to the control unit; the rotating control unit has a pre-stored liquid level threshold range [L, H] of the clean liquid tank and is configured to: receive real-time liquid level data and determine whether the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H]; when X > H, generate a first control command; when X < L, generate a second control command; the execution drive unit is electrically connected to the control valve or pump of each filter tank group and is configured to: receive the control command of the rotating control unit and close some filter tank groups according to the first control command, or open some standby filter tank groups according to the second control command.

[0020] This invention utilizes a liquid level detection unit to provide feedback on the system's operating status based on the liquid level in the clean liquid tank. By employing a rotating control unit and an execution drive unit, the system's operating status can be automatically and intelligently adjusted in a timely manner based on the liquid level data. In particular, when changes occur in the filtration conditions of the centralized filtration system (such as changes in water quality, fluctuations in flow demand, etc.) or when some filtration units experience changes in status or temporary malfunctions, the error caused by manual intervention can be significantly reduced, and the load balance of the centralized filtration system can be improved.

[0021] Embodiment 2: The technical solution of the embodiment of the present utility model is further optimized on the basis of the above optional technical solutions. The rotation control unit further pre-stores a liquid level deviation percentage threshold Δ%, and is configured to: after determining that the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H], calculate the deviation percentage of the current liquid level; if the current liquid level deviation percentage is greater than or equal to the liquid level deviation percentage threshold Δ%, generate a corresponding control instruction.

[0022] In the embodiment of the present utility model, when the current liquid level value X of the clean liquid tank is greater than H, the deviation percentage of the current liquid level is (X - H) / H * 100%; when the current liquid level value X of the clean liquid tank is less than L, the deviation percentage of the current liquid level is (L - X) / L * 100%. Therefore, the rotation control unit includes a processor and a memory electrically connected thereto; the liquid level threshold range [L, H] and the liquid level deviation percentage threshold Δ% are stored in the memory; the processor is configured to: receive real-time liquid level data, and judge whether the current liquid level value X deviates from the liquid level threshold range [L, H]; after determining that X deviates from [L, H], if X>H, calculate the deviation percentage P1 = (X - H) / H × 100%; if X<L, calculate the deviation percentage P2 = (L - X) / L × 100%; and judge whether P1 or P2 is greater than or equal to Δ%, and if the judgment result is yes, generate a corresponding control instruction.

[0023] In the embodiment of the present utility model, the system further includes a filter pump arranged to match each group of filter tank assemblies, and the execution drive unit is electromechanically connected to each of the filter pumps; the rotation control unit is configured to: call the accumulated operation duration data of each filter pump, when a shutdown operation of the filter tank assemblies needs to be performed, select at least one filter pump with the longest accumulated operation duration, and instruct the execution drive unit to shut down the selected filter pump; when a startup operation of the filter tank assemblies needs to be performed, select at least one filter pump with the shortest accumulated operation duration from all filter pumps in a stopped state, and instruct the execution drive unit to start the selected filter pump.

[0024] In the embodiment of the present utility model, the system further includes on-off valves arranged on the inlet and outlet pipelines of each filter tank assembly. The execution drive unit is electromechanically connected to each on-off valve, and is configured to: receive the instruction for starting or shutting down a specific filter pump sent by the rotation control unit, call the virtual matching relationship between the filter pumps and the on-off valves, and synchronously drive the corresponding filter pump and its associated on-off valve to perform the opening or closing action. In some embodiments, the on-off valves may include a first on-off valve and a second on-off valve, the filter tank assembly is connected to the dirty liquid tank through the filter pump and the first on-off valve, and is connected to the clean liquid tank through the second on-off valve.

[0025] In this embodiment of the invention, the system further includes an electronic control unit, which is electrically connected to the execution drive unit; the electronic control unit receives instructions from the execution drive unit and controls the power supply to and from the filter pump and the switching valve.

[0026] In some embodiments, the system further includes a timing unit for accumulating the running time of each filter pump; and a data storage unit for storing and updating the accumulated running time data of each filter pump.

[0027] In this embodiment of the invention, the virtual matching relationship between the filter pump and the switching valve is a virtual mapping relationship table between the filter pump and the switching valve, which is stored in the data storage unit.

[0028] This utility model embodiment effectively avoids the risk of load imbalance caused by delays or misjudgments due to manual operation by using a rotating control unit based on liquid level data and the cumulative running time of the filter pump group, combined with preset logic. This achieves a dynamic balance in continuously maintaining the liquid supply demand, greatly improving the efficiency and overall stability of the system during long-term operation.

[0029] Example 3: This utility model embodiment proposes an intelligent rotating cutting fluid filtration system comprising a physical layer and a control layer; wherein, the physical layer includes several groups of parallel filtration unit clusters, such as... Figure 3 As shown, each filtration unit cluster includes at least one filter pump 2, a dirty liquid main pipe 3, a dirty liquid branch pipe 4, at least one first switching valve 5, a filter tank group 6, a clean liquid delivery pipe, at least one second switching valve 8, a dirty liquid tank 1, a clean liquid tank 10, and a level gauge 11. The clean liquid delivery pipe includes a clean liquid branch pipe 7 and a clean liquid main pipe 9. The dirty liquid tank 1 is connected to the filter pump 2, and the filter pump 2 is connected to each filter tank group 6 through the dirty liquid main pipe 3 and the dirty liquid branch pipe 4. The first switching valve 5 is located at the connection between each dirty liquid branch pipe 4 and the dirty liquid main pipe 3 to control the opening and closing of the connection. The clean liquid tank 10 is connected to each filter tank group 6 through the clean liquid delivery pipe, and the second switching valve 8 is located at the connection between each clean liquid branch pipe 7 and the clean liquid main pipe 9. The level gauge 11 is located inside the clean liquid tank 10 and is used to obtain the liquid level data inside the clean liquid tank 10. The physical layer also includes electronic control components, which receive instructions from the control layer and directly control the power supply to the filter pump, the first switching valve, and the second switching valve.

[0030] The control layer includes a data storage module, a real-time timing module, a round-robin scheduling module, and an execution control module.

[0031] The data storage module is used to store the cumulative running time of each filter pump, the mapping relationship between the filter pump and its associated first switch valve, second switch valve, and filter tank group (i.e., which valves and filter tank groups belong to which pump or pump group); and to store the liquid level threshold range of the clean liquid tank triggered by scheduling and the real-time liquid level data of the clean liquid tank.

[0032] The real-time timing module is used to collect the running time of the filter pump in real time; the running time is added to the cumulative running time of the corresponding filter pump and updated to the data storage module.

[0033] The round-robin scheduling module is used to perform the following steps: (1) Continuously acquire real-time liquid level data of the clean liquid tank in the data storage module; (2) Round-robin scheduling trigger condition detection: a. Liquid level range judgment: First, check whether the current real-time liquid level data of the clean liquid tank exceeds the liquid level threshold range [L, H] (i.e., <L or >H) set in the data storage module.

[0034] b. Valid deviation judgment: If and only if the liquid level exceeds the range [L, H], further detect whether the deviation of the current real-time liquid level data of the clean liquid tank from the nearest threshold (L or H) reaches or exceeds the preset liquid level change rate threshold Δ.

[0035] When the level is below the low threshold (< L): Calculate (L - current liquid level) / L * 100%. Determine if this value is ≥ Δ%.

[0036] When the value is above the high threshold (>H): Calculate (current liquid level - H) / H * 100%. Determine if this value is ≥Δ%.

[0037] Scheduling trigger decision: When conditions (a) and (b) are met simultaneously (i.e., the liquid level exceeds [L, H] and deviates from the nearest threshold by ≥Δ%), it is determined that pump group operation (start or stop) needs to be performed.

[0038] Pump operation decision: Obtain the cumulative runtime of the filter pumps and sort all filter pumps in ascending or descending order of cumulative runtime. Based on the sorting results and the current operation to be performed (on or off), finally decide which filter pump (or group of filter pumps) to turn on or off.

[0039] Execution control module: Receives the scheduling results output by the rotation scheduling module, and sends corresponding pump / valve start / stop commands to the electronic control components according to the mapping relationship between the filter pump, the on / off valve, and the filter tank group in the data storage module. When the pump is started or stopped, it automatically opens or closes its virtual matching on / off valve.

[0040] The specific scheduling logic is illustrated with an example of L=70%, H=80%, and Δ=5% as follows:

[0041] Liquid level status: 69.5% < L (70%) Deviation calculation: (70-69.5) / 70×100%≈0.71%<Δ(5%) Analysis: Sensor noise or minor disturbance Operation: Maintain the current pump group status and do not perform any scheduling; the real-time timing module continues to accumulate the pump running time.

[0042] Liquid level status: 65% < L (70%) Deviation calculation: (70-65) / 70×100%≈7.14%≥Δ%(5%) Analysis: With the number of filter pumps currently in operation remaining unchanged, the filtration capacity remains constant. However, some machines are temporarily activated, changing the filtration conditions—the filtration capacity is less than the machine's demand, causing the liquid level in the clean liquid tank to drop. In this case, additional filter units need to be activated.

[0043] Adding filter units can be done in two ways: one is to add multiple filter units at once and then determine whether to add or close some filter units based on the liquid level in the clean liquid tank; the other is to add one filter unit at a time, and then continue to adjust it based on the liquid level in the clean liquid tank after each addition, accumulating multiple additions until the requirements are met.

[0044] Taking the example of adding a new set of filter units each time, accumulating multiple times until the requirements are met, the operation process is as follows: Candidate selection: Sort the results from the current silent pump group by cumulative running time from shortest to longest, and select the pump group with the shortest time.

[0045] Generate command: Open the pump unit and its associated first and second switching valves.

[0046] Continuous monitoring (observe for a few minutes until the liquid level in the clean liquid tank stabilizes again). If the liquid level is still <70% and deviates by ≥5%, restart the next pump with the shortest cycle time. If the liquid level returns to [70%, 80%] or deviates by <5%, stop scheduling. Scenario 3: Minor out-of-bounds exceed H (80.3%) → Do not trigger scheduling. Liquid level status: 80.3% > H (80%) Deviation calculation: (80.3-80) / 80×100%=0.375%<Δ%(5%) Analysis: Sensor noise or minor disturbance Operation: Maintain the current pump group status and do not perform any scheduling; the real-time timing module continues to accumulate the pump running time.

[0047] Liquid level status: 85% > H (80%) Deviation calculation: (85-80) / 80×100%=6.25% ≥Δ%(5%) Analysis: With the number of filter pumps currently in operation remaining constant, the filtration volume remains constant. However, some machines are temporarily shut down, changing the filtration conditions—the filtration volume exceeds the machine's demand, causing the liquid level in the clean liquid tank to rise. In this case, the number of filter units in operation needs to be reduced.

[0048] One way to reduce the number of filter units that need to be turned on is to turn off multiple filter units at once and then determine whether to turn some filter units on or off again based on the liquid level in the clean liquid tank; another way is to turn off one filter unit at a time, and then continue to adjust based on the liquid level in the clean liquid tank after each turn, accumulating this process multiple times until the requirements are met.

[0049] Taking the example of turning off one set of filter units at a time, accumulating multiple times until the requirements are met, the operation process is as follows: Candidate selection: Sort the results from the currently running pump groups by cumulative running time from shortest to longest, and select the pump group with the longest running time.

[0050] Generate command: Open the pump unit and its associated first and second switching valves.

[0051] Continuous monitoring (observation time T minutes) is performed. If the liquid level is still >80% and deviates by ≥5%, the next pump with the longest duration is shut down. If the liquid level returns to [70%, 80%] or deviates by <5%, the scheduling is stopped.

[0052] Liquid level status: 75% ∈ [70%, 80%] Analysis: Regardless of the fluctuation in liquid level, as long as it remains within the range of [L, H], scheduling will not be triggered. Operation: Maintain the current pump group status and do not perform any scheduling; the real-time timing module continues to accumulate the pump running time.

[0053]

[0054] Figure 4 The diagram illustrates a cluster of three parallel filtration units, demonstrating the application of the intelligent rotating system for centralized filtration of cutting fluid proposed in this embodiment of the invention. Figure 4 Mainly includes: 1. Set the liquid level threshold range for the clean liquid tank (e.g., [70%, 80%]). During system operation, the data storage module loads historical data. Cumulative operating time of each filter pump (Example: P1=150h, P2=80h, P3=200h) Pump and valve mapping table (Example: P1→V1 / G1 / S1, P2→V2 / G2 / S2, P3→V3 / G3 / S3) Liquid level control parameters: Low threshold L=70%, High threshold H=80% Data synchronization and sorting: After acquiring the data, the rotation scheduling module sorts all available pumps by cumulative duration (shortest → longest): P2 (80h) → P1 (100h) → P3 (150h) → P4 (200h) → P5 (300h). Based on the sorting results and mapping relationships, it generates the current pump group status table.

[0055] 2. Stable operation monitoring When the liquid level is stable (liquid level ∈ [L,H], or liquid level <L and deviation from calculation <Δ%, or liquid level >H and deviation from calculation <Δ%) The real-time timing module accumulates the duration of the running pump unit every second (approximately +0.0003h) and updates the data storage module.

[0056] 3. Liquid level anomaly scheduling trigger Scenario A: Current liquid level > 80%, and deviation calculation: (current liquid level - 80) / 80 × 100% ≥ Δ% (assuming the set value is 5%) Initial response: The rotation scheduling module selects the pump group with the longest cumulative running time from the running pump groups (example: P3=150.45h), generates the instruction: close P3 and its valves V3 and S3, and executes the control module to send the instruction: stop pump P3 → close valve V3 → stop tank group G3 → close valve S3 passage. For persistently high levels: wait for a period of time (e.g., 5 minutes) until the liquid level in the clean liquid tank stabilizes again, but the level is still >80% and deviates by ≥Δ% (5%). Then shut down the pump set that has been running for the longest time (e.g., P1=100.42h) and cycle until the level returns to [70%, 80%] or deviates by <5%, or there is no pump set to shut down.

[0057] Scenario B: Liquid level < 70%, and deviation calculation: (70 - current liquid level) / 70 × 100% ≥ Δ(5%) Initial response: The rotation scheduling module selects the group with the shortest cumulative duration from all silent pump groups (example: P4=200.42h) and generates the instruction: open P4 and its valves V4 and S4, and execute the control module to open valve V4 → start pump P4 → activate tank group G4 → S4 passage.

[0058] If the level remains too low: Wait for a period of time (e.g., 5 minutes) until the liquid level in the clean liquid tank stabilizes again, but the level is still <70% and deviates by ≥Δ% (5%), restart the available pump set for the shortest possible time (e.g., P5=300.45h), and cycle until the level returns to [70%, 80%] or deviates by <5%, or there is no available pump set.

[0059] Equipment linkage execution: The execution control module outputs the following command packets: Start the equipment (filter pump P2), open the valves (on / off valves V2, S2). Physical layer response: Start pump P2, and simultaneously turn on V2 and S2 to form a path: dirty liquid tank → P2 → V2 → G2 → S2 → clean liquid tank, and the liquid level begins to rise.

[0060] Runtime updates: The real-time timing module detects the running pump status every second and accumulates the duration.

[0061] Special procedures: artificial intervention scenarios Scenario: Manually disabling the pump unit The operator disables P1 in the interface (requires maintenance) → the data storage module marks P1 as unavailable. When the liquid level is <70% and the deviation is >5% to trigger scheduling, the silent pump group can be used: P2 (80h), P3 (200h), with the starting sequence as follows: P2 (shortest duration) → if insufficient, start P3.

[0062] In conclusion, Figure 2 The working process of the rotating system provided in this embodiment of the present invention is shown, mainly including: Establish and store the mapping relationship between the filter tank group, the first switch valve, the second switch valve and the filter pump; The system continuously collects real-time liquid level data from the clean liquid tank using a level gauge. When the liquid level exceeds the set range and the rate of change of liquid level is greater than the threshold, a control response is immediately triggered. The system also accumulates the running time of the filter pump during operation and updates the stored data in real time. All available filter pumps are sorted from shortest to longest based on cumulative runtime; Based on the current liquid level, the pump group operation is determined. When the liquid level is below the lower threshold and the liquid level change rate is greater than the liquid level change rate threshold, the group with the shortest cumulative running time is automatically selected from all silent and available pump groups and put into operation. When the liquid level is above the upper threshold and the liquid level change rate is greater than the liquid level change rate threshold, the group with the longest cumulative running time is automatically selected from the currently running pump groups and taken out of operation. When the liquid level is stable within the threshold range, or the liquid level change rate is not greater than the liquid level change rate threshold, the existing operating status of all pump groups remains unchanged.

[0063] Start the selected filter pump and its corresponding valve to draw the dirty liquid into the corresponding filter tank group and then transport it to the clean liquid tank; at the same time, keep the unselected filter pump and valve in the closed state.

[0064] Runtime detection: Continuously monitor liquid level changes, and immediately mark the threshold status and calculate the deviation of the liquid level change rate when the liquid level deviates from the continuous threshold range; the cumulative duration of the pump group during operation is refreshed every second.

[0065] Operators are allowed to forcibly shut down the pump unit: re-monitor the current liquid level, start scheduling based on the latest liquid level, select to turn the pump unit on / off, and generate a new channel.

[0066] This invention's intelligent rotation system is the first to propose using the liquid level of the clean liquid tank as a feedback indicator for the system's operating status. By monitoring and analyzing the liquid level in the clean liquid tank, the system's operating status can be automatically and intelligently adjusted in a timely manner. In particular, when the centralized filtration system experiences changes in filtration conditions (such as changes in water quality or fluctuations in flow demand) or changes in the status of some filtration units / temporary malfunctions, the system of this invention can significantly reduce the error of manual intervention and improve the load balance of the centralized filtration system.

Claims

1. A smart rotating cutting fluid filtration system, characterized in that, It includes a clean liquid tank, multiple sets of filter tanks connected to the clean liquid tank, and a rotation control unit, which is connected to the liquid level detection unit and the execution drive unit respectively. The liquid level detection unit is used to detect the real-time liquid level data of the clean liquid tank and send it to the control unit; The rotation control unit has a pre-stored liquid level threshold range [L, H] for the clean liquid tank and is configured to: receive the real-time liquid level data and determine whether the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H]; when X > H, generate a first control command; when X < L, generate a second control command. The execution drive unit is electrically connected to the control valves or pumps of each filter tank group and is configured to: receive control commands from the rotation control unit and shut down some filter tank groups according to the first control command, or open some standby filter tank groups according to the second control command.

2. The intelligent rotating cutting fluid filtration system according to claim 1, characterized in that, The rotation control unit also has a pre-stored liquid level deviation percentage threshold Δ%, and is configured to: after determining that the current liquid level value X of the clean liquid tank deviates from the liquid level threshold range [L, H], calculate the current liquid level deviation percentage; if the current liquid level deviation percentage is greater than or equal to the liquid level deviation percentage threshold Δ%, then generate a corresponding control command.

3. The intelligent rotating cutting fluid filtration system according to claim 2, characterized in that, When the current liquid level X in the clean liquid tank is greater than H, the percentage deviation of the current liquid level is (X - H) / H * 100%; when the current liquid level X in the clean liquid tank is less than L, the percentage deviation of the current liquid level is (L - X) / L * 100%.

4. The intelligent rotating cutting fluid filtration system according to claim 2, characterized in that, The rotation control unit includes a processor and a memory electrically connected thereto; The liquid level threshold range [L, H] and the liquid level deviation percentage threshold Δ% are stored in the memory; The processor is configured to: receive the real-time liquid level data and determine whether the current liquid level value X deviates from the liquid level threshold range [L, H]; after determining that X deviates from [L, H], perform the following operations: If X > H, then calculate the percentage deviation P1 = (X - H) / H × 100%; If X < L, then calculate the percentage deviation P2 = (L - X) / L × 100%; It then determines whether P1 or P2 is greater than or equal to Δ%. If the determination is yes, the corresponding control command is generated.

5. A smart rotating cutting fluid filtration system according to any one of claims 1 to 4, characterized in that: The system also includes a filter pump matched to each of the filter tank groups, and the execution drive unit is electromechanically connected to each of the filter pumps. The rotation control unit is configured to: call up the cumulative runtime data of each filter pump; when the filter tank group needs to be shut down, select at least one filter pump with the longest cumulative runtime, and instruct the execution drive unit to shut down the selected filter pump. When the filter tank group needs to be turned on, at least one filter pump with the shortest cumulative running time is selected from all the filter pumps that are stopped, and the execution drive unit is instructed to turn on the selected filter pump.

6. The intelligent rotating cutting fluid filtration system according to claim 5, characterized in that: The system also includes switching valves installed on the inlet and outlet pipelines of each filter tank group. The execution drive unit is electromechanically connected to each of the switching valves and is configured to: receive instructions from the rotation control unit to open or close a specific filter pump, invoke the virtual matching relationship between the filter pump and the switching valve, and synchronously drive the corresponding filter pump and its associated switching valve to perform the opening or closing action.

7. The intelligent rotating cutting fluid filtration system according to claim 6, characterized in that: The switching valve includes a first switching valve and a second switching valve. The filter tank assembly is connected to the dirty liquid tank through the filter pump and the first switching valve, and to the clean liquid tank through the second switching valve.

8. The intelligent rotating cutting fluid filtration system according to claim 6, characterized in that: The system also includes an electronic control unit, which is electrically connected to the execution drive unit; the electronic control unit receives instructions from the execution drive unit and controls the power supply to and from the filter pump and the switching valve.

9. The intelligent rotating cutting fluid filtration system according to claim 6, characterized in that: The system also includes a timing unit for accumulating the running time of each filter pump; and a data storage unit for storing and updating the accumulated running time data of each filter pump.

10. The intelligent rotating cutting fluid filtration system according to claim 9, characterized in that: The virtual matching relationship between the filter pump and the switching valve is a virtual mapping relationship table between the filter pump and the switching valve, which is stored in the data storage unit.

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