A cutting fluid purifying device for a numerical control machine tool

Abstract

The utility model relates to a numerical control machine tool cutting fluid purification device, including the purification box, the rotation sealing has the drum in the purification box, is provided with the filter hole outside the drum, is installed with the servo motor on the purification box, the servo motor fixedly connected with the driving pulley, the driving pulley and the driven pulley are fixedly connected outside the drum, and the transmission belt is wound outside the driving pulley and the driven pulley, the mounting frame is installed outside the purification box, and the mounting frame is equipped with the liquid inlet pipe, and the liquid outlet pipe is connected with the purification box outside, through setting up the drum, under the drive of servo motor, make the drum rotate, after dirty cutting fluid is transported into the drum inside through the liquid inlet pipe, the drum will drive cutting fluid to rotate with the drum, in the process that cutting fluid rotates, rely on centrifugal force, pass through each filter hole, and cutting fluid is thrown out the drum inside, only keep the iron filings impurity, like this has finished separating the impurity and liquid, also thrown off the cutting fluid that iron filings impurity outside package, reduce the waste of cutting fluid.

Description

Technical Field

[0001] This utility model belongs to the technical field of cutting fluid purification devices, specifically relating to a cutting fluid purification device for CNC machine tools. Background Technology

[0002] In the actual machining process of CNC machine tools, a large amount of iron filings generated by cutting operations will inevitably mix into the cutting fluid. As the key medium for recycling, if the iron filings in the cutting fluid are not removed in time, it will not only contaminate the fluid itself, but may also block the circulation pipeline and affect the machining accuracy of the machine tool. Therefore, purifying the cutting fluid with iron filings is a necessary step to ensure stable machining.

[0003] However, in the current cutting fluid recovery process, the chip separation stage still relies on traditional filtration structures for simple interception. This method has obvious shortcomings—a large amount of cutting fluid adheres to the surface of the separated chips. This liquid cannot be returned with the circulation system and can only be recycled along with the chips, which results in a waste of cutting fluid. To address this issue, we propose a CNC machine tool cutting fluid purification device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a CNC machine tool cutting fluid purification device to solve the problems existing in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A CNC machine tool cutting fluid purification device, comprising: Purification box; A roller is sealed inside the purification box and extends outward from both ends. The outer side of the roller has several evenly arranged filter holes. A drive assembly is provided between the roller and the purification box. A collection assembly is provided inside the roller for collecting filtered iron filings. An inlet pipe is provided with a mounting bracket fixedly fitted on its outer side. The mounting bracket is installed on the outside of the purification box, and the inlet pipe and the roller are rotatably sealed together. A liquid outlet pipe, which is connected to the lower outer part of the purification box; The driving component includes: A servo motor, which is mounted on the purification box; A drive pulley is fixedly connected to the outer side of the output rod of the servo motor. The driven pulley is fixedly connected to the outer side of one end of the roller extending from the purification tank and is positioned opposite to the liquid inlet pipe. Wherein, the nominal diameter of the driving pulley is smaller than the nominal diameter of the driven pulley; A drive belt is wound around the outside of the driving pulley and the driven pulley.

[0006] Further specifying, the collection component includes: The sealing cover has an installation hole in the roller, and the sealing cover is threaded to the inner wall of the installation hole. The outer end of the sealing cover is provided with a pull rod. The storage rod is fixedly connected to the center of the end of the sealing cover and is located on the central axis of the roller. The storage rod has several evenly distributed mounting grooves on its outer side, and each mounting groove has a magnetic strip fixed inside. A cleaning brush is fixedly connected to the upper wall of the purification box, and the bristles of the cleaning brush are in contact with the outer side of the roller.

[0007] Further, the purification box has an insertion hole on its outer side, an activated carbon plate is slidably disposed inside the insertion hole, and several support rods are fixed in the middle of the inner wall of the purification box and abut against the lower side of the activated carbon plate.

[0008] Further, the purification box has a groove, a rotating rod is provided inside the groove for damping rotation, a semi-circular chuck is fixed on the outside of the rotating rod, and a lifting groove matching the semi-circular chuck is provided on the activated carbon plate.

[0009] Further specified, the lower wall of the purification box is symmetrically inclined, and a collection groove is provided on the lower wall of the purification box, the collection groove and the liquid outlet pipe are located on the same central axis.

[0010] Further, the inside of the roller is provided with a baffle at one end near the outlet of the liquid inlet pipe, and a plurality of liquid outlet holes are provided at the edge of the baffle.

[0011] The beneficial effects of this utility model are: 1. By setting up a combination structure of "drum + drive components (servo motor, drive pulley, driven pulley, transmission belt)", compared with traditional simple interception filtration, it can use centrifugal force to achieve efficient separation of cutting fluid and iron filings. At the same time, the reduction design of the drive pulley with a nominal diameter smaller than that of the driven pulley can stably control the drum speed, avoiding iron filings being thrown out or cutting fluid splashing due to excessive speed. It can also use centrifugal force to dry the cutting fluid attached to the surface of the iron filings, solving the problem of cutting fluid waste caused by liquid carried by iron filings in traditional filtration.

[0012] 2. By setting up a collection component of "collection rod + magnetic strip" inside the drum, compared with the traditional method where iron filings are scattered and difficult to clean after filtration, the magnetic strip can actively adsorb the iron filings after centrifugation, achieving centralized collection of iron filings. Moreover, the magnetic strip only adsorbs the iron filings after spin drying, further reducing the residue of cutting fluid. At the same time, with the detachable design of the sealing cover and pull rod, iron filings can be cleaned without disassembling the drum, reducing maintenance difficulty.

[0013] 3. By setting up a deep purification and fixing structure with "activated carbon plate, support rod, insertion hole, groove, rotating rod, semi-circular chuck, and lifting groove" inside the purification box, compared with the limitation of traditional filters that only remove large iron filings, the activated carbon plate can adsorb the tiny impurities, oil stains and odors remaining in the cutting fluid, achieving deep purification. The support rod ensures the stability of the activated carbon plate, and the cooperation of the insertion hole, rotating rod and semi-circular chuck makes the activated carbon plate easy to disassemble and replace, solving the problem of complex maintenance of traditional deep purification components. Attached Figure Description

[0014] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of a CNC machine tool cutting fluid purification device according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a CNC machine tool cutting fluid purification device according to the present invention. Figure 2 ; Figure 3 This is a cross-sectional structural diagram of a CNC machine tool cutting fluid purification device according to the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the structure of a CNC machine tool cutting fluid purification device according to the present invention. Figure 3 ; Figure 6 for Figure 5 A magnified structural diagram at point B in the middle.

[0016] The symbols for the main components are explained below: Purification box 100, drum 101, filter hole 102, inlet pipe 103, mounting bracket 104, outlet pipe 105 Servo motor 200, drive pulley 201, driven pulley 202, transmission belt 203 Sealing cap 300, mounting hole 301, pull rod 302, storage rod 303, mounting groove 304, magnetic strip 305, cleaning brush 306. Socket 400, activated carbon plate 401, support rod 402, groove 403, rotating rod 404, semi-circular chuck 405, lifting groove 406. Collection tank 500, baffle 501, liquid outlet 502. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1-6 As shown, a CNC machine tool cutting fluid purification device includes: Purification box 100; The roller 101 is rotatably sealed inside the purification box 100, and its two ends extend out of the outside of the purification box 100. Several evenly arranged filter holes 102 are opened on the outside of the roller 101. A drive assembly is provided between the roller 101 and the purification box 100. A collection assembly is provided inside the roller 101 for collecting the filtered iron filings. The liquid inlet pipe 103 is fixedly fitted with a mounting bracket 104 on its outer side. The mounting bracket 104 is installed on the outer side of the purification box 100, and the liquid inlet pipe 103 and the roller 101 are rotatably sealed together. The liquid outlet pipe 105 is connected to the lower outer part of the purification box 100. The driver components include: Servo motor 200 is installed on the cleanroom 100; The active belt pulley 201 is fixedly connected to the outer side of the output rod of the servo motor 200. Driven pulley 202 is fixedly connected to the outer side of one end of roller 101 extending out of purification box 100, and is arranged opposite to liquid inlet pipe 103. The nominal diameter of the driving pulley 201 is smaller than the nominal diameter of the driven pulley 202; The transmission belt 203 is wound around the outside of the driving pulley 201 and the driven pulley 202.

[0019] The purification chamber 100 serves as the main frame and housing space of the entire purification device, providing a carrier for the installation and operation of components such as the drum 101, drive assembly, and collection assembly. It also receives the purified cutting fluid filtered from the drum 101, preventing cutting fluid leakage and ensuring that the purification process takes place in a closed environment.

[0020] The drum 101 is the core component for centrifugal separation of cutting fluid and temporary storage of iron filings. It generates centrifugal force through rotation to separate the cutting fluid from the iron filings. The filter hole 102 allows the purified cutting fluid to pass through while blocking the iron filings, thus achieving the initial separation of "liquid-slag". The drum 101 is equipped with several evenly distributed push plates. Each push plate can drive the internal cutting fluid to rotate with the drum 101 when the drum 101 rotates, thereby generating centrifugal force in the driven cutting fluid.

[0021] The inlet pipe 103 is responsible for conveying the dirty cutting fluid after the CNC machine tool is used to the inside of the drum 101. It is the channel for the cutting fluid to enter the purification device. Its rotating sealed connection with the drum 101 ensures that there is no leakage during the delivery of the cutting fluid and does not affect the rotation of the drum 101. The inlet pipe 103 is fixed to the purification box 100 by the mounting bracket 104. The mounting bracket 104 forms a stable support structure for the inlet pipe 103 and restricts the displacement of the inlet pipe 103. This can prevent the rotation of the roller 101 from affecting the delivery of cutting fluid by the inlet pipe 103. The inlet pipe 103 and the drum 101 are on the same axis. This can prevent the inlet pipe 103 from moving when the drum 101 rotates, thereby affecting the sealing of the connection between the inlet pipe 103 and the drum 101 and causing the cutting fluid to leak.

[0022] The outlet pipe 105 discharges the treated clean cutting fluid from the purification tank 100 so that the cutting fluid can be recycled back to the CNC machine tool.

[0023] The servo motor 200 is the power source of the entire device, providing power for the rotation of the roller 101, and can indirectly adjust the rotation speed of the roller 101 by controlling its own rotation speed.

[0024] The drive pulley 201 transmits power to the servo motor 200. Because the nominal diameter of the drive pulley 201 is smaller than that of the driven pulley 202, the roller 101 obtains a stable rotation speed that meets the purification requirements.

[0025] Driven pulley 202 receives power from drive pulley 201 and drives drum 101 to rotate. Its larger nominal diameter can reduce the rotation speed of drum 101, ensuring the stability of the centrifugal purification process and preventing iron filings from being thrown out due to excessive speed.

[0026] The transmission belt 203, as the medium for power transmission, connects the driving pulley 201 and the driven pulley 202, smoothly transmitting the power of the servo motor 200 to the driven pulley 202, and also has a certain buffering effect, reducing vibration and impact during the transmission process.

[0027] Among them, such as Figure 2 As shown, the outer side of the purification box 100 is also equipped with a protective shell, which can protect the driving pulley 201, the driven pulley 202 and the transmission belt 203, and prevent the external environment from damaging these components, thereby affecting the operation of the entire device.

[0028] The collection components include: The sealing cover 300 and the roller 101 have an installation hole 301. The sealing cover 300 is threaded to the inner wall of the installation hole 301. The end of the sealing cover 300 facing outward is provided with a pull rod 302. The storage rod 303 is fixedly connected to the center of the end of the sealing cover 300 and is located on the central axis of the roller 101. The storage rod 303 has several evenly distributed mounting grooves 304 on its outer side, and each mounting groove 304 has a magnetic strip 305 fixed inside. Cleaning brush 306 is fixedly connected to the upper wall of the purification box 100, and the brush of cleaning brush 306 is in contact with the outer side of roller 101.

[0029] The sealing cover 300 seals the mounting hole 301 on the roller 101 to prevent the cutting fluid to be purified from leaking from the mounting hole 301 during the rotation of the roller 101. At the same time, it provides a fixed base for the storage rod 303 and facilitates the subsequent opening and cleaning of the inside of the roller 101 to collect the iron filings. For example, when it is necessary to clean iron filings, the sealing cover 300 can be removed from the mounting hole 301 by rotating the sealing cover 300 to clean the inside of the roller 101; The interface provides an installation point for the sealing cover 300 and also serves as a channel for removing the storage rod 303 and cleaning up iron filings, allowing workers to handle the internal iron filings without disassembling the entire roller 101, thus reducing maintenance difficulty. The pull rod 302 provides a force point for the disassembly and installation of the sealing cover 300, making it easier for staff to operate and avoiding the difficulty of disassembly due to the excessive tightness of the threaded connection between the sealing cover 300 and the mounting hole 301, thus improving maintenance convenience.

[0030] The storage rod 303 serves as the mounting carrier for the magnetic strip 305, fixing the magnetic strip 305 onto the central axis of the drum 101 to ensure the stability of the magnetic strip 305 within the drum 101. At the same time, its own structure provides support for the adsorption of iron filings, allowing the iron filings to concentrate and adhere near the magnetic strip 305, facilitating subsequent cleaning. Among them, a fixed space is provided for the magnetic strip 305 to ensure that the magnetic strip 305 can be stably installed on the storage rod 303, and to prevent the magnetic strip 305 from falling off due to the centrifugal force generated by the rotation of the roller 101 or the impact of the cutting fluid, so as to ensure the continuous and stable function of the magnetic strip 305 in adsorbing iron filings. Among them, the magnetic strip 305 itself is magnetic. When the iron filings fall from the inner wall of the drum 101 due to gravity during the slow rotation of the drum 101, they will be attracted to the surface of the magnetic strip 305 by the magnetic force, so as to achieve the centralized collection of iron filings and prevent iron filings from flowing with the cutting fluid or accumulating in the drum 101. If the iron filings are coated with cutting fluid, it will affect the magnetic strip 305's adsorption of the iron filings. As the collecting rod 303 rotates with the drum 101, the iron filings fall back into the inner wall of the drum 101 until the cutting fluid on the outside of the iron filings is shaken off. Only then can the iron filings be adsorbed onto the magnetic strip 305, thereby achieving the collection of iron filings and reducing the waste of cutting fluid.

[0031] The cleaning brush 306 cleans the outside of the roller 101 during the rotation of the roller 101, removing iron filings or impurities attached to the surface of the roller 101 and around the filter hole 102, preventing the filter hole 102 from being blocked, ensuring the fluid flow capacity of the filter hole 102, and ensuring that the cutting fluid can smoothly pass through the filter hole 102 into the lower side of the purification box 100.

[0032] An insertion hole 400 is provided on the outside of the purification box 100. An activated carbon plate 401 is slidably disposed inside the insertion hole 400. Several support rods 402 are fixed in the middle of the inner wall of the purification box 100 and abut against the lower side of the activated carbon plate 401.

[0033] The socket 400 provides a channel for the installation, removal and replacement of the activated carbon plate 401, which facilitates the staff to regularly maintain the activated carbon plate 401 and ensure its purification capacity. At the same time, through the sliding fit with the activated carbon plate 401, it ensures that the activated carbon plate 401 is in a stable position in the purification box.

[0034] Activated carbon plate 401 deeply purifies the cutting fluid after preliminary filtration by roller 101, adsorbing residual minute impurities, oil stains or odors in the cutting fluid, further improving the cleanliness of the cutting fluid and extending its cycle life. Among them, the porous physical structure of activated carbon itself, with a large number of tiny pores on its surface, allows the cutting fluid to be adsorbed by the pores when it flows through the activated carbon plate 401, thus achieving deep filtration and purification of the cutting fluid.

[0035] The support rod 402 supports the activated carbon plate 401, preventing it from bending, deforming, or falling due to its own weight or the impact of the cutting fluid. This ensures that the activated carbon plate 401 remains in a stable working position within the purification chamber 100, thus ensuring uniform purification effect.

[0036] The purification box 100 has a groove 403, and a rotating rod 404 is provided inside the groove 403 for damping rotation. A semi-circular chuck 405 is fixed on the outside of the rotating rod 404. A lifting groove 406 matching the semi-circular chuck 405 is provided on the activated carbon plate 401.

[0037] The groove 403 provides installation and movement space for the rotating rod 404 and the semi-circular chuck 405, limits the rotation range of the rotating rod 404, ensures that the semi-circular chuck 405 moves only within the preset trajectory, and avoids failure of the activated carbon plate 401 to be fixed due to component displacement. It is the "structural basis" for realizing the clamping function of the activated carbon plate 401.

[0038] The rotating rod 404, as the "power transmission component" of the semi-circular chuck 405, drives the semi-circular chuck 405 to rotate synchronously through its own rotation, so as to realize the "engagement" or "separation" of the semi-circular chuck 405 and the lifting groove 406 on the activated carbon plate 401, thereby controlling the fixed and disassembled state of the activated carbon plate 401. Each rotating rod 404 has a triangular cross-section, with the apex of the triangle abutting against the activated carbon plate 401. This prevents residual cutting fluid on the rotating rod 404, thus avoiding waste of cutting fluid.

[0039] The semi-circular chuck 405, through matching and engaging with the lifting groove 406 on the activated carbon plate 401, fixes the activated carbon plate 401 in a preset position within the purification box 100, preventing the activated carbon plate 401 from shifting or slipping due to cutting fluid impact or device vibration, thus ensuring a deep purification effect. The rotating rod 404 and the groove 403 are connected by a damped rotation. Therefore, when the rotating rod 404 is in motion, the semi-circular chuck 405 can be fixed to prevent it from affecting the staff from pulling out the activated carbon plate 401.

[0040] The lifting groove 406 provides a "locking interface" for the semi-circular chuck 405. It is a key structure for the cooperation between the activated carbon plate 401 and the semi-circular chuck 405. It achieves self-fixation by locking with the semi-circular chuck 405. At the same time, it can also serve as a "force application point" for workers to remove the activated carbon plate 401 after disassembling it.

[0041] The lower wall of the purification box 100 is symmetrically inclined, and a collection groove 500 is provided on the lower wall of the purification box 100. The collection groove 500 and the liquid outlet pipe 105 are located on the same central axis.

[0042] The collecting tank 500 collects the cutting fluid flowing along the inclined lower wall, forming a "convergence center" to ensure that the dispersed cutting fluid can converge into a stable liquid flow, providing a stable liquid source for subsequent discharge through the outlet pipe 105, and avoiding the waste of cutting fluid caused by residual cutting fluid inside the purification tank 100.

[0043] A baffle 501 is provided inside the drum 101 near the outlet of the liquid inlet pipe 103, and several liquid outlet holes 502 are provided at the edge of the baffle 501.

[0044] Baffle 501 forms a physical barrier; When the cutting fluid is sprayed out from the outlet of the inlet pipe 103, it will first hit the baffle 501, thereby changing the flow direction and speed of the cutting fluid and preventing it from directly impacting the collection rod 303 and affecting the collection component. The baffle 501 provides a flow channel for the cutting fluid after it is blocked, so that the cutting fluid can flow slowly and evenly from the outlet hole 502 at the edge of the baffle 501 to the middle and outer areas of the drum 101, ensuring that the cutting fluid in each area of ​​the drum 101 is uniformly subjected to centrifugal force.

[0045] When purifying cutting fluid: S1. Coolant delivery: After use, the dirty cutting fluid (containing a large amount of iron filings) of the CNC machine tool is transported to the inlet pipe 103 through an external pipeline, and the inlet pipe 103 transports the dirty cutting fluid into the inside of the drum 101. When the dirty cutting fluid flows out of the outlet of the inlet pipe 103, it will be blocked by the baffle 501 first. This can prevent the cutting fluid from impacting the collection component inside the drum 101 when it flows out, causing the cutting fluid to remain on the collection component, thus affecting the adsorption of iron filings and impurities filtered out later. The cutting fluid blocked by the baffle 501 slowly and evenly diffuses into all areas inside the drum 101 through the outlet holes on the edge of the baffle 501, ensuring that the cutting fluid is evenly distributed inside the drum 101, in preparation for subsequent centrifugal separation.

[0046] S2. Centrifugal filtration: When the servo motor 200 is started, the output shaft of the servo motor 200 drives the active pulley 201 to rotate. The power is transmitted to the driven pulley 202 through the transmission belt 203. Since the driven pulley 202 is fixedly connected to the drum 101, it will drive the drum 101 to rotate inside the purification box 100. Since there are several push plates inside the drum 101, the cutting fluid inside the drum 101 will rotate synchronously with the drum 101. Among them, the nominal diameter of the driving pulley 201 is smaller than that of the driven pulley 202, so as to realize speed reduction transmission and ensure the stable speed of the drum 101; The rotation of the drum 101 causes the cutting fluid to be thrown into the purification tank 100 through the filter hole 102 under the action of centrifugal force. Iron filings, due to their large size, cannot pass through the filter hole 102 and are trapped in the drum 101, thus completing the initial separation of "liquid-slag".

[0047] S3. Iron filings adsorption, collection, and drying: As the drum 101 continues to rotate, the iron filings trapped inside the drum 101 move upward from the bottom side along the inner wall of the drum, and fall down due to gravity after reaching a certain height. The magnetic strip 305 on the receiving rod 303 at the central axis of the drum 101 generates magnetic force, which attracts the falling iron filings to the surface of the magnetic strip 305, thereby achieving centralized collection of iron filings and preventing iron filings from continuing to rotate and accumulate inside the drum 101, which would block the filter hole 102 and affect the filtration effect of the cutting fluid. The cutting fluid adhering to the surface of the iron filings is thrown out under the action of centrifugal force and enters the purification box 100 through the filter hole 102, leaving only dry iron filings adsorbed on the magnetic strip 305 to prevent the cutting fluid from being lost with the iron filings. S4. Deep purification of cutting fluid: The cutting fluid entering the purification chamber 100 through the filter hole 102 first flows through the activated carbon plate 401. The activated carbon plate 401 uses its own porous structure to adsorb the tiny impurities, oil stains and odors remaining in the cutting fluid, thus deeply purifying the cutting fluid and making up for the inability of centrifugal separation to remove tiny pollutants. Under the influence of gravity, the purified cutting fluid flows along the inclined lower wall of the purification tank 100 towards the center, eventually converging into the collecting trough 500 at the lowest point of the lower wall to form a stable fluid flow.

[0048] S5. Coolant discharge: The clean cutting fluid in the collection tank 500 is discharged from the purification device through the outlet pipe 105 and transported back to the cutting fluid circulation system of the CNC machine tool for reuse in cutting operations, completing the "purification-reuse" closed loop.

[0049] S6. Equipment Maintenance: Iron filings cleaning: After the device has been running for a period of time, the magnetic strip 305 will attract a lot of iron filings. The staff can rotate the sealing cover 300 by pulling the lever 302, take out the sealing cover 300 and the storage rod 303 fixed thereto, clean the dry iron filings on the surface of the magnetic strip 305, and then reinstall it. Replacement of activated carbon plate 401: Rotate the rotating rod 404 in the groove 403 to drive the semi-circular chuck 405 to rotate out of the lifting groove 406 of activated carbon plate 401. After unlocking, pull out the old activated carbon plate along the insertion hole 400, replace it with a new plate, and then reverse the operation to lock it, thus completing the maintenance.

[0050] In this embodiment, a drum is set up and rotated under the drive of a servo motor. After the dirty cutting fluid is introduced into the drum through the inlet pipe, the drum will drive the cutting fluid to rotate with the drum. During the rotation of the cutting fluid, the cutting fluid is thrown out of the drum through various filter holes by centrifugal force, leaving only iron filings and impurities. This completes the separation of impurities and liquid, and also removes the cutting fluid wrapped around the iron filings and impurities, reducing the waste of cutting fluid.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A CNC machine tool cutting fluid purification device, characterized in that, include: Purification box (100); A roller (101) is rotatably sealed inside the purification box (100) and extends outward from the outside of the purification box (100) at both ends. A plurality of evenly arranged filter holes (102) are provided on the outside of the roller (101). A drive assembly is provided between the roller (101) and the purification box (100). A collection assembly is provided inside the roller (101) for collecting the filtered iron filings. An inlet pipe (103) is provided with a mounting bracket (104) fixedly sleeved on the outside of the inlet pipe (103). The mounting bracket (104) is installed on the outside of the purification box (100), and the inlet pipe (103) and the roller (101) are rotatably sealed together. The liquid outlet pipe (105) is connected to the lower outer part of the purification box (100); The driving component includes: A servo motor (200) is mounted on the purification box (100); The active pulley (201) is fixedly connected to the outer side of the output rod of the servo motor (200); Driven pulley (202), the driven pulley (202) is fixedly connected to the outer side of one end of the roller (101) extending out of the purification box (100), and is arranged opposite to the liquid inlet pipe (103). Wherein, the nominal diameter of the driving pulley (201) is smaller than the nominal diameter of the driven pulley (202); A drive belt (203) is wound around the outside of the driving pulley (201) and the driven pulley (202).

2. The CNC machine tool cutting fluid purification device according to claim 1, characterized in that: The collection component includes: The sealing cover (300) has an installation hole (301) on the roller (101), and the sealing cover (300) is threaded to the inner wall of the installation hole (301). The sealing cover (300) has a pull rod (302) on the outer end. The storage rod (303) is fixedly connected to the center of the end of the sealing cover (300) and is located on the central axis of the roller (101). The storage rod (303) has several evenly distributed mounting grooves (304) on its outer side, and each mounting groove (304) has a magnetic strip (305) fixed inside. A cleaning brush (306) is fixedly connected to the upper wall of the purification box (100), and the brush of the cleaning brush (306) contacts the outer side of the roller (101).

3. The CNC machine tool cutting fluid purification device according to claim 1, characterized in that: The purification box (100) has an insertion hole (400) on the outside, and an activated carbon plate (401) is slidably disposed inside the insertion hole (400). Several support rods (402) are fixed in the middle of the inner wall of the purification box (100) and abut against the lower side of the activated carbon plate (401).

4. The CNC machine tool cutting fluid purification device according to claim 3, characterized in that: The purification box (100) has a groove (403), and a rotating rod (404) is provided inside the groove (403) for damping rotation. A semi-circular chuck (405) is fixed on the outside of the rotating rod (404). A lifting groove (406) matching the semi-circular chuck (405) is provided on the activated carbon plate (401).

5. The CNC machine tool cutting fluid purification device according to claim 1, characterized in that: The lower wall of the purification box (100) is symmetrically inclined, and a collection groove (500) is provided on the lower wall of the purification box (100). The collection groove (500) and the liquid outlet pipe (105) are located on the same central axis.

6. The CNC machine tool cutting fluid purification device according to claim 1, characterized in that: The inside of the roller (101) is provided with a baffle (501) at one end near the outlet of the liquid inlet pipe (103), and a plurality of liquid outlet holes (502) are provided at the edge of the baffle (501).

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