Filtering equipment for numerical control machine tool

Abstract

The utility model discloses filtering equipment for a numerical control machine tool, and relates to the technical field of numerical control machine tools, and the filtering equipment comprises a machine body, a pump, a cloth bag filtering assembly, an outlet liquid filtering assembly, a hydraulic sensor and a controller. Wherein a hollow cavity is formed in the machine body, the cavity is divided into a liquid inlet chamber and a liquid outlet chamber through a partition plate, and the liquid inlet chamber and the liquid outlet chamber are communicated with each other through a communication structure, so that the situation that the pump sucks air in the working process due to turbulent flow generated by liquid inlet impact is prevented. The water inlet and the water outlet are both formed in the side wall of the machine body, the water inlet is used for receiving oil liquid to be filtered outside the system, and the water outlet is used for discharging the filtered oil liquid. The pump is a plunger pump. According to the equipment, the filtering structure is optimized, the plunger pump is introduced, and the hydraulic sensor and the controller are integrated, so that efficient filtering and stable conveying of cooling liquid and real-time monitoring of the blockage condition of the filter element are achieved.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, specifically to a device for filtering coolant in CNC machine tools, which is particularly suitable for high-precision CNC machine tools that employ tool center water outlet technology. Background Technology

[0002] In CNC machine tool machining, especially for machines employing center-outlet coolant technology, the cleanliness and delivery stability of the coolant have a crucial impact on machining accuracy, tool life, and equipment operating efficiency. Center-outlet coolant technology, by directly delivering coolant to the cutting area, effectively reduces cutting temperature, tool wear, and improves surface finish. However, this technology places high demands on the coolant circulation equipment, requiring not only high cleanliness of the coolant but also stable pressure and flow rate during delivery. If metal shavings, oil, or other impurities are mixed into the coolant, it will not only clog the center-outlet channels but also accelerate the wear of the tool and machine tool components, potentially leading to machining failure or equipment damage. Therefore, coolant filtration equipment plays an indispensable role in the application of center-outlet coolant technology.

[0003] Currently, most coolant filtration equipment on the market adopts a single-stage filtration structure, such as a single bag filter or centrifugal filter. While these devices can meet the filtration needs of general machine tools, they perform poorly in applications requiring coolant outlets at the tool center. Firstly, single-stage filtration structures have limited filtration precision, making it difficult to completely remove tiny particles and oil contaminants from the coolant. Prolonged use can easily lead to filter clogging, increasing maintenance frequency and costs. Secondly, existing filtration equipment typically uses a single-stage pumping structure, whose output pressure and flow rate are insufficient to meet the high requirements of coolant delivery for tool center coolant outlet technology. Especially under high-load machining conditions, single-stage pumping structures are prone to unstable coolant supply due to insufficient pressure, thus affecting tool cooling performance and machining quality. Furthermore, the cavity structure design of existing filtration equipment is relatively simple, often lacking effective separation between the inlet and outlet processes. This allows turbulence generated by the inlet impact to easily introduce air during the outlet process, reducing the lubrication and cooling effect of the coolant, and potentially even causing air resistance in the tool center coolant outlet channel.

[0004] More importantly, existing filtration equipment generally lacks clogging detection capabilities, making it impossible to monitor filter element clogging in real time or to determine filter element lifespan using data. In practice, operators typically rely on experience or periodic inspections to determine whether filter elements need replacement. This method is not only inefficient but also prone to errors, leading to premature or delayed replacement. Premature replacement increases operating costs, while delayed replacement can result in decreased filtration efficiency and even allow impurities in the coolant to enter the machine tool system, affecting processing quality and equipment lifespan. Furthermore, the lack of data-driven clogging detection makes monitoring and managing equipment operation difficult, hindering intelligent maintenance and preventative care, further increasing uncertainty and maintenance costs during equipment operation.

[0005] The shortcomings of existing technologies mainly stem from the limitations of their structural design and single-function nature. For example, single-stage pumping structures cannot simultaneously meet the demands of high pressure and high flow rate, leading to unstable coolant supply; the lack of effective cavity separation causes interference between the inlet and outlet processes, reducing filtration efficiency; single-stage filtration structures lack sufficient filtration precision, making it difficult to meet the high cleanliness requirements of coolant in tool center water outlet technology; furthermore, the lack of clogging detection functionality means that the management and maintenance of filter element life lacks a scientific basis. These problems not only limit the performance of filtration equipment but also increase the risk of malfunctions and maintenance costs during machine tool operation, especially under high-precision machining and complex working conditions, where existing filtration equipment struggles to meet the actual needs of tool center water outlet technology.

[0006] To address the aforementioned issues, developing a new type of filtration equipment has significant technical importance and application value. Utility Model Content

[0007] The purpose of this application is to overcome at least one deficiency in the existing technology and provide a filtration device for CNC machine tools. This device, through optimized filtration structure, the introduction of a plunger pump, and the integration of hydraulic sensors and controllers, achieves efficient filtration and stable delivery of coolant, as well as real-time monitoring of filter element clogging. This effectively improves machine tool machining accuracy, extends tool life, and reduces equipment maintenance costs. This application can also be widely applied to other industrial fields requiring high-cleanliness liquid filtration and stable delivery.

[0008] To achieve the above objectives, this application discloses a filtration device for CNC machine tools, which includes a body, a pump, a bag filter assembly, an outlet filter assembly, a hydraulic sensor, and a controller.

[0009] The machine body has a hollow cavity inside, which is divided into an inlet chamber and an outlet chamber by a partition. The inlet chamber and the outlet chamber are connected to each other by a connecting structure to prevent the turbulence caused by the inlet impact from causing the pump to draw in air during operation.

[0010] Both the inlet and outlet are located on the side wall of the machine body. The inlet is used to receive the oil to be filtered from outside the system, and the outlet is used to discharge the filtered oil.

[0011] The pump is a plunger pump, comprising a pump body base, a pump unit, a pump body end cover, and a drive shaft penetrating the pump unit. This drive shaft is directly connected to a motor and is driven by the motor. Furthermore, the pump unit adopts a plunger structure, with an oil suction chamber and an oil pressure chamber inside. The reciprocating motion of the plunger achieves the intake and pressurized discharge of liquid.

[0012] The inlet end of the bag filter assembly is connected to the water inlet via a pipe, and its lower end extends into the inlet chamber. The bottom end is designed as an open structure for discharging the filtered oil. The outlet filter assembly is connected to the outlet end of the pump via a pipe for further filtration of the liquid and output to the water outlet.

[0013] The top surface of the machine body is provided with an installation platform, on which a pump and a motor that drives the pump are fixedly installed.

[0014] The pump's inlet is connected to the outlet chamber via a pipe fitting, which is equipped with a removable inlet filter for easy maintenance and replacement.

[0015] The pump's outlet is connected to an outlet filter assembly via a pipe. The outlet filter assembly performs final filtration of the liquid and outputs it to the outlet. A hydraulic sensor is installed on the pipe between the pump and the outlet filter assembly to monitor hydraulic pressure changes in the pipe in real time.

[0016] The machine body is also equipped with a float-type liquid level indicator to monitor the liquid level changes in the cavity in real time, so as to ensure the stability and safety of the equipment operation.

[0017] The inlet end of the bag filter assembly is connected to the water inlet via a pipe to receive the oil to be filtered. The lower end of the bag filter assembly extends into the inlet chamber, and the filtered oil is discharged into the inlet chamber through an open structure. The outlet filter assembly is connected to the outlet end of the pump via a pipe to further filter the liquid and output it to the water outlet.

[0018] The controller is connected to a hydraulic sensor to receive hydraulic data collected by the sensor and analyzes changes in the hydraulic data to determine the clogging status of the filter element. When the hydraulic data exceeds a preset threshold, the controller can issue an alarm or prompt message to remind the operator to replace the filter element in time, thereby achieving intelligent maintenance and preventive care. The controller can also communicate with the machine tool's main control system to achieve coordinated control between the filtration equipment and the machine tool, further improving the stability and efficiency of equipment operation.

[0019] Furthermore, the pump body base, pump unit, and pump body end cover are stacked sequentially and fixed together by connecting fasteners to form a compact and easy-to-maintain pump body structure.

[0020] Furthermore, the drive shaft of the plunger pump is directly connected to the motor output shaft, and power is transmitted through a shaft-to-shaft connection.

[0021] Furthermore, the bottom of the machine body is provided with a drain port for draining residual liquid from the cavity. The partition plate is provided with a connecting hole to allow liquid flow between the inlet chamber and the outlet chamber.

[0022] Compared with the prior art, this application has at least one of the following beneficial effects:

[0023] 1. The machine body is divided into an inlet chamber and an outlet chamber by a partition. Combined with the multi-stage filtration process of the bag filter assembly and the outlet filter assembly, it can effectively reduce oil turbulence and prevent air from mixing in, ensuring the stability and reliability of the coolant during the transportation process. This extends the service life of the cutting tools and machine tool components and improves the machining accuracy and surface quality.

[0024] 2. A hydraulic sensor is installed on the pipeline between the pump and the outlet filtration assembly, which, together with the controller, enables real-time monitoring and data-driven management of filter element clogging. By analyzing changes in hydraulic data, the controller can promptly determine the clogging status of the filter element and issue alarms or prompts, thereby helping operators to scientifically replace and maintain the filter element.

[0025] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0026] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0028] Figure 2 This is a schematic diagram of the structure of one embodiment disclosed in this application from another perspective.

[0029] Figure 3 This is a structural schematic diagram of one embodiment disclosed in this application from another perspective.

[0030] Figure 4 This is a schematic diagram of the structure of a portable machine tool after half-section, as disclosed in this application. Detailed Implementation

[0031] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0032] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0033] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0034] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items. Example

[0035] This embodiment discloses an exemplary structure of a filtration device for CNC machine tools. The device is designed and structured to fully consider the requirements of high-precision and high-flow-rate coolant filtration in industrial applications, while also taking into account the ease of maintenance and intelligent monitoring capabilities of the device.

[0036] In terms of structural composition, the entire equipment mainly consists of components such as the body 1, pump 2, bag filter assembly 3, liquid outlet filter assembly 4, water inlet, water outlet, hydraulic sensor, and controller.

[0037] A mounting platform is provided on the top surface of the machine body 1. Pump 2 and its matching motor are fixedly mounted on the platform. The output shaft of motor 5 is directly connected to the drive shaft of pump 2 to realize power transmission. This structure is compact and facilitates subsequent linkage calibration and maintenance of pump and motor.

[0038] The body 1 is hollow, and the hollow interior is divided by a partition 101 to form an inlet chamber 102 and an outlet chamber 103.

[0039] The bottom of the unit 1 is also equipped with a drain port (not shown in the figure) to drain excess oil that remains inside the cavity when the unit is shut down for maintenance or when the filter element is replaced, so as to avoid sedimentation and corrosion caused by long-term storage.

[0040] It's important to understand that dividing the interior of the machine body 1 into an inlet chamber 102 and an outlet chamber 103 is primarily to effectively control the flow path and velocity of the oil, ensuring a relatively stable state during entry and exit. In many industrial filtration scenarios, designing the entire machine body as a single cavity can lead to strong eddies or turbulence within the cavity if the external liquid supply or pump suction volume changes drastically in a short period. This can prevent the oil from flowing smoothly during filtration or pressurization and may also trap air into the outlet pipe. Once air is drawn into the pump 2, it not only reduces pumping efficiency but also causes noise and vibration, and in severe cases, can even cause the pump 2 to run dry or experience excessive wear. By adding a partition 101 inside the machine body 1 to divide it into an inlet chamber 102 and an outlet chamber 103, and then arranging a connecting structure between the two, the large-scale flow fluctuations caused by the inlet impact can be physically limited, ensuring that the outlet area maintains a relatively stable liquid level and flow velocity, thus preventing air from being trapped in the oil during pumping.

[0041] Another important reason is that the inlet chamber 102 is a space for initial collection and settling, where the filtered oil can experience a short period of stable flow. The outlet chamber 103, on the other hand, is the area for fine conveying in conjunction with the pumping and outlet filtration components. Maintaining high liquid level stability helps maintain the pump's continuous suction capacity. With the cavity designed as two functional zones, the bag filter assembly first draws the oil discharged after primary filtration into the inlet chamber, where it flows relatively gently before entering the outlet chamber 103 through the connecting holes or connecting pipes on the partition 101. This way, large particles removed by the primary filter are less likely to enter the outlet chamber 103 at high speed with the oil before entering the pump 2, reducing the impact load on the gears in the pump 2 and making the load on subsequent pumping stages more balanced.

[0042] In this specific embodiment, an inlet is provided on the outer wall of the machine body 1 for receiving external oil to be filtered; an outlet is also provided on the same side or different sides of the machine body 1 for discharging the filtered oil, so that it can be further used or transported in subsequent processes.

[0043] Pump 2 adopts the form of a plunger pump. Its core feature is that it converts the rotational power of the motor into the reciprocating linear motion of the plunger through structures such as an eccentric wheel, thereby realizing high-pressure delivery of coolant to meet the stringent requirements of CNC machine tools for coolant delivery under high pressure and high flow conditions.

[0044] The pump 2 has a compact overall structure, is easy to disassemble and maintain, and has good reliability and durability. Specifically, the pump 2 is composed of a pump body base, a pump unit, and a pump body end cover stacked in sequence and fixed into an integrated structure by fasteners.

[0045] The pump body base is located at the bottom and is used to support and position the entire pump body. The pump unit adopts a plunger structure, with an internal suction chamber and a pressure chamber. The rotational power of the motor 5 is converted into the reciprocating linear motion of the plunger through a structure such as an eccentric wheel. This allows the coolant to be drawn into the suction chamber, enter the pressure chamber, and be pressurized and discharged, ultimately being delivered to the target location at a higher pressure and a more stable flow rate. The pump body end cap seals and fixes the structure of the pump unit, ensuring a good seal in the plunger's moving area and effectively preventing leakage.

[0046] Secondly, the drive shaft passes through the pump unit from one end of the pump body and is directly connected to the output shaft of the external motor 5. Through structures such as an eccentric wheel, the rotational motion of the motor is converted into the reciprocating linear motion of the plunger. This drive shaft must not only ensure high strength and high wear resistance but also have high coaxiality accuracy to avoid significant vibration or wobbling of the plunger during high-speed reciprocating motion. To reduce friction and vibration during plunger movement, the plunger and cylinder are typically subjected to high-precision machining and surface treatment. Simultaneously, sufficient lubrication and cooling channels are provided inside the pump 2 to ensure the stability of the pump under high load and long-term operation.

[0047] The piston pump's structural design enables stable delivery under high pressure conditions, with low noise, pulsation, and leakage. The eccentric wheel and other conversion mechanisms efficiently convert the motor's rotational power into the reciprocating linear motion of the piston, thus providing higher output pressure. This design is particularly suitable for machine tool coolant pumping applications requiring continuous high pressure and high flow rates.

[0048] To achieve multiple filtration of the coolant, the equipment also includes two sets of filtration structures. One set is a bag filter assembly 3, which in this embodiment mainly performs the primary filtration function, intercepting and removing large metal particles and larger impurities in the coolant, thereby protecting the safety and stability of subsequent fine filtration and pumping stages. Its structure typically includes filter bags, support frames or support rings, inlet pipe connection interfaces, and bottom drain channels, aiming to ensure high filtration efficiency while also considering good replaceability and maintainability.

[0049] Specifically, the inlet end of the bag filter assembly 3 is connected to the water inlet via a pipe. When the oil to be filtered enters the machine body, it will first flow through this assembly. The filter bag itself can be made of oil-resistant, temperature-resistant materials with high filtration accuracy, such as synthetic fibers or stainless steel mesh linings, to resist high temperatures, high pressures, and chemical corrosion in industrial processing environments. In terms of installation, the filter bag is usually fixed to the filter housing or inside the machine body with the help of a support frame or support ring, so that it can remain relatively stable during oil flow and is not prone to tipping or deformation due to fluid impact. To improve filtration efficiency, the connection between the filter bag and the inlet pipe is usually designed with a seal to ensure that all the oil to be filtered enters the filter bag, rather than leaking or flowing around from the interface.

[0050] During use, the oil flows into the filter bag from top to bottom or from the side. Larger particles and metal debris are trapped on the inner wall of the bag or deposited at the bottom. The filtered oil is discharged through the open structure at the bottom of the filter bag and eventually flows into the inlet chamber. To improve the filtration speed, the filter bag assembly 3 is also connected to an air source, which uses gas to quickly filter and discharge the coolant to be filtered.

[0051] The open discharge structure at the bottom of the filter bag allows the oil to flow smoothly under gravity or a slight pressure difference, effectively separating impurities from the oil. If filter bag blockage or flow rate reduction occurs, operators can quickly disassemble the filter bag for cleaning or replacement via the inspection port on the top of the machine, thus shortening downtime for maintenance and improving production efficiency.

[0052] It is important to understand that in industrial processing, especially under the high-load continuous operation environment of CNC machine tools, bag filter assemblies can significantly extend the service life of subsequent fine filters and pumps by intercepting large particles and easily settled impurities, and also reduce the risk of equipment failure due to particle wear or accumulation. Furthermore, by selecting filter bags of different materials and mesh sizes, various processing scenarios or coolant characteristics can be flexibly addressed. For tool center-outlet cooling or other high-requirement cooling methods, the bag filter assembly, as a primary filtration unit, effectively removes floating debris and sediment while ensuring high flow rate and stability, laying a solid foundation for subsequent secondary pressurization by the gear pump and final fine filtration. In summary, the bag filter assembly in the filtration device of this invention is not only simple in structure and easy to maintain, but also achieves high reliability and high efficiency in industrial applications, providing a solid guarantee for high-quality filtration of CNC machine tool coolants.

[0053] The inlet end of the bag filter assembly 3 is connected to the water inlet via a pipe, and its lower end extends into the inlet chamber 102 with an open discharge structure. This serves as the primary filter for the coolant, removing large metal shavings and other large impurities. Subsequently, the oil, pre-purified by the bag filter assembly 3, collects in the inlet chamber 102 and flows steadily into the outlet chamber 103. The outlet chamber 103 is connected to the inlet end of the pump 2. A detachable inlet filter on the pump 2 inlet pipe provides secondary interception, preventing larger particles from entering the pump 2 and causing wear on the gears. The further pressurized oil flows to the outlet filter assembly 4, which performs final filtration, removing fine particles and oil contaminants, resulting in a cleaner coolant discharged through the outlet. This multi-stage filtration system significantly reduces the impact of impurities on the machining quality and tool life of CNC machine tools, improving the stability of the machining process.

[0054] To achieve more intelligent operation monitoring and maintenance, this invention also incorporates a hydraulic sensor in the pipeline between the pump and the outlet filter assembly to monitor hydraulic pressure changes in real time. The hydraulic data is transmitted to the controller, which analyzes the data to quickly determine if the filter element is showing signs of clogging. If the hydraulic reading exceeds a preset threshold, the controller issues an alarm or notification to remind operators to replace the filter element promptly, preventing further clogging from adversely affecting production progress and the equipment itself. Furthermore, the controller can communicate with the CNC machine tool's main control system for enhanced collaborative control. For example, when excessive pump load or outlet pressure exceeds the normal range, the machine tool can automatically adjust the machining feed rate or parameters to maintain a stable machining process. Simultaneously, a float-type liquid level indicator is added to the machine body to monitor changes in the chamber liquid level in real time, ensuring safe operation of the equipment.

[0055] In the scenario of coolant outlet at the tool center of a high-precision CNC machine tool, the actual working process of this filtration equipment typically includes several stages: First, the coolant to be filtered enters the bag filter assembly from the inlet on the side wall of the machine body to remove large particles of impurities; then, the filtered oil settles and flows in the inlet chamber and enters the outlet chamber through the connecting holes on the partition; under the action of the pump, the high-pressure oil passes through the outlet filter assembly to remove even finer particles, and is then transported from the outlet at the bottom of the machine body to the water outlet channel at the tool center. This combination of multi-stage filtration and multi-stage pressurization can maintain a stable flow rate even under high pressure conditions, thereby significantly improving tool cooling and chip removal effects, extending tool life, and improving the machining quality of parts.

[0056] Thanks to its real-time monitoring and intelligent control functions, this invention effectively reduces maintenance costs and improves equipment availability. When the hydraulic sensor detects increased oil flow resistance or abnormal pressure rise, the controller can issue an early warning before a malfunction occurs. Operators can replace the filter bag or filter element while the machine tool is still under control, thus avoiding equipment downtime or safety hazards due to severe blockage. Therefore, this invention not only meets the stringent requirements of CNC machine tools for coolant filtration and high-pressure delivery, but also significantly improves intelligent monitoring and maintenance, truly achieving a balance of efficiency, stability, and safety. Through its application in actual processing, it can maintain clean and sufficient coolant during long-term high-load operations, thereby improving product processing quality and reducing unexpected downtime, demonstrating significant technical value and application prospects in the industrial manufacturing field.

[0057] The controller plays a crucial role in monitoring and control within the filtration equipment described herein. By working in conjunction with sensors such as hydraulic sensors, it enables real-time monitoring of the filtration process, fault prediction, and maintenance alerts.

[0058] The core of the controller includes an industrial-grade processor or programmable logic controller, a signal acquisition and conversion interface, a storage unit, and a communication module that connects to the external machine tool main control system.

[0059] The controller and hydraulic sensors communicate via analog or digital signals. The sensors send the monitored pipeline pressure or differential pressure values ​​to the controller. The controller filters, denoises, and compares the acquired data with thresholds to determine whether the filtration system has issues such as filter blockage, pressure overload, or abnormal flow fluctuations.

[0060] When the value exceeds the preset range, the controller will promptly issue an alarm signal or provide a prompt on the display interface, reminding the operator to check and replace the corresponding filter element as soon as possible, thereby effectively avoiding processing abnormalities or equipment downtime caused by filter element blockage.

[0061] Controllers typically integrate storage modules to store and record critical data from daily operations. By periodically collecting data such as pressure, flow rate, and temperature, historical curves or logs can be generated, providing a basis for subsequent maintenance cycle optimization and equipment health trend analysis. This recording method also facilitates operators in reviewing system operating status and identifying the root cause of problems after malfunctions. For more advanced industrial IoT applications, the controller can be connected to a host computer or remote server via fieldbus, industrial Ethernet, or other communication methods, allowing upper-level software to centrally manage and analyze the operating information of multiple machine tools or filtration devices.

[0062] Regarding the linkage with the machine tool's main control system, the alarm or predictive signals provided by the controller can be synchronously exchanged with the CNC system. If a sharp rise in coolant pressure, excessive outlet resistance, or excessive filtration load is detected, the machine tool system can adjust in a timely manner according to its own machining strategy, such as reducing the cutting load, pausing tool operation, or issuing a more significant safety warning, thereby ensuring the continuity and stability of the cooling process without affecting overall production safety and quality. If the equipment is in an unmanned or minimally staffed factory environment, the controller can also send abnormal signals to the management platform or the mobile devices of relevant personnel via remote communication to ensure that maintenance instructions are received as soon as possible.

[0063] It is important to note that, to meet the stringent requirements of high-precision machine tools regarding system reliability and lifespan, the controller utilizes industrial-grade components with excellent temperature resistance, electromagnetic interference resistance, and dustproof performance. The system incorporates comprehensive power protection and anomaly monitoring mechanisms, issuing corresponding alarms in cases of power voltage fluctuations, excessively high controller hardware temperatures, or signal line disconnections. If it is necessary to expand the controller's functionality or adjust alarm thresholds, operators can update the controller's firmware or software configuration using the accompanying human-machine interface or external programming tools. This flexible maintainability and scalability allow the filtration equipment to adapt to existing industrial site needs and respond quickly to changes in processing environments or load conditions.

[0064] Through these measures, the controller acts as the brain and central nervous system of the filtration equipment during operation. It not only provides real-time assessments of filter clogging, pump load, and equipment safety status, but also integrates with external systems such as CNC machine tools for coordinated control, ultimately achieving comprehensive and intelligent management of the filtration process. This intelligent monitoring and fault prediction mode reduces sudden downtime and equipment damage caused by excessive filter clogging, while also providing enterprises with a more scientific and efficient maintenance management approach, significantly improving the overall availability and production efficiency of the system.

[0065] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A filtration device for CNC machine tools, characterized in that, include: The body has a hollow cavity inside, which is divided into an inlet chamber and an outlet chamber by a partition. The inlet chamber and the outlet chamber are connected to each other by a connecting structure. Both the inlet and outlet are located on the side wall of the machine body. The inlet is used to receive the oil to be filtered from outside the system, and the outlet is used to discharge the filtered oil. The pump is a plunger pump, which includes a pump body base, a pump unit, a pump body end cover, and a drive shaft that passes through the pump unit. The drive shaft is directly connected to a motor and is driven by the motor. The pump unit adopts a plunger structure and has an oil suction chamber and an oil pressure chamber. The reciprocating motion of the plunger realizes the suction and pressurization discharge of liquid. The bag filter assembly has its inlet end connected to the water inlet via a pipe, its lower end extending into the inlet chamber, and its bottom end set as an open structure for discharging the filtered oil. The liquid outlet filtration assembly is connected to the liquid outlet of the pump via a pipe and is used to further filter the liquid and output it to the outlet. A hydraulic sensor is installed on the pipeline between the pump and the outlet filter assembly to monitor the hydraulic pressure changes in the pipeline in real time. The controller, connected to the hydraulic sensor, is used to receive hydraulic data collected by the hydraulic sensor and to determine the clogging status of the filter element by analyzing changes in the hydraulic data. A float-type liquid level indicator is installed inside the machine body to monitor changes in the liquid level within the cavity in real time.

2. The filtration device according to claim 1, characterized in that: The bottom of the machine body is provided with a drain port.

3. The filtration device according to claim 1, characterized in that: The partition plate is provided with a connecting hole.

4. The filtration device according to claim 1, characterized in that: The top surface of the machine body is provided with an installation platform, on which a pump and a motor that drives the pump are fixedly installed.

5. The filtration device according to claim 1, characterized in that: The pump's inlet is connected to the outlet chamber via a pipe fitting, which is equipped with a removable inlet filter.

6. The filtration device according to claim 1, characterized in that: The controller communicates with the machine tool's main control system.

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