A device and method for cleaning and recycling contaminated cutting fluid for a numerical control machine tool

Abstract

This invention relates to the field of CNC machine tool cutting fluid cleaning technology, specifically to a device and method for cleaning and recovering contaminated cutting fluid for CNC machine tools. It includes a collection assembly and a distribution assembly. The collection assembly includes a collection tray, which is composed of a liquid-blocking conical ring plate and a liquid-discharging ring plate. The top edge of the liquid-discharging ring plate is fixedly connected to the top edge of the liquid-blocking conical ring plate, and the bottom edge of the liquid-discharging ring plate is fixedly connected to the inner edge of the collection ring groove. One end of a recovery chute is fixedly connected to and communicates with the collection ring groove, and the other end of the recovery chute extends into the inner cavity of a recovery tank. The collection tank is located directly below the collection tray. This invention can achieve automatic classification and separation of impurities of different particle sizes in the cutting fluid, improving the overall effect of cutting fluid treatment; it also allows for real-time and continuous adjustment of the separation accuracy of impurities in the cutting fluid; and it has the advantages of compact structure and easy maintenance.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool cutting fluid cleaning technology, specifically to a device and method for cleaning and recovering contaminated cutting fluid for CNC machine tools. Background Technology

[0002] In CNC machine tools, cutting fluids are widely used for lubrication, cooling, cleaning, and rust prevention during metal cutting, grinding, and drilling processes. Cutting fluids are typically formulated from a variety of components, including base oil, water, emulsifiers, extreme pressure additives, and rust inhibitors. They are relatively expensive and have a certain environmental impact. In actual production, cutting fluids are repeatedly recycled. However, with the increase in machining cycles, various contaminants such as metal shavings, grinding wheel particles, abrasive powder, sludge, and microbial metabolites continuously mix into the cutting fluid, forming "contaminated cutting fluid." Direct discharge of contaminated cutting fluid without effective treatment not only wastes resources but also increases production costs and environmental pressure. Therefore, cleaning, purifying, and recycling contaminated cutting fluids has become an important issue in the field of CNC machining.

[0003] Chinese patent application CN202010563055.9 discloses a CNC machine tool cutting fluid recovery device, including a stirring vessel and a slag storage tank. The stirring vessel is fixed to a boss inside the slag storage tank. A bracket is bolted to the top of the stirring vessel, and a motor is mounted on the bracket. The motor shaft extends into the stirring vessel. Several electromagnets are evenly spaced on the outer wall of the stirring vessel. A liquid outlet conduit is fixed at the center of the boss, and a filter is installed at the bottom of the liquid outlet conduit. A liquid storage tank is located at the bottom of the filter. This invention first effectively removes large cutting chips through a filter screen, then uses electromagnets to magnetically attract small cutting impurities in the cutting fluid, effectively removing impurities with high processing efficiency. Finally, the cutting fluid is filtered using a filter, and the clean cutting fluid is discharged into the storage tank for recovery.

[0004] However, traditional processing methods suffer from problems such as low efficiency, easy clogging of filters, and inability to achieve graded separation of impurities of different particle sizes. Some centrifugal separation devices have complex structures and it is difficult to flexibly adjust the separation accuracy and speed according to the degree of contamination of the cutting fluid, making it difficult to balance separation efficiency and purity. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a contaminated cutting fluid cleaning and recovery device for CNC machine tools. This invention aims to solve the problems of non-adjustable separation accuracy, difficulty in balancing separation efficiency and purity, and easy clogging of filter screens in existing cutting fluid filtration devices. It provides a compact, graded separation device and method for cleaning and recovering contaminated cutting fluid with dynamically adjustable separation parameters and separation accuracy, and without easy clogging of the filter screen.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A contaminated cutting fluid cleaning and recovery device for CNC machine tools includes a fluid collection assembly and a fluid distribution assembly. The fluid collection assembly includes a fluid collection tray, which is composed of a fluid-blocking conical ring plate and a fluid-discharging ring plate. The top edge of the fluid-discharging ring plate is fixedly connected to the top edge of the fluid-blocking conical ring plate, and the bottom edge of the fluid-discharging ring plate is fixedly connected to the inner edge of the fluid collection ring groove. One end of the recovery chute is fixedly connected to and communicates with the fluid collection ring groove, and the other end of the recovery chute extends into the inner cavity of the recovery tank. The fluid collection tank is located directly below the fluid collection tray, and the bottom opening of the fluid-blocking conical ring plate faces into the fluid collection tank. The liquid dispensing assembly includes a dispensing cone with multiple outlet holes. The openings of the dispensing cone face upwards, and the outlet holes are at the same height and close to the top edge of the dispensing cone. The central axes of the dispensing cone and the collecting cone are aligned. The diameter of the dispensing cone is no greater than a certain value. A central rotating shaft is fixedly connected to the center of the dispensing cone. One end of the central rotating shaft near the opening of the dispensing cone is fixedly connected to a connecting concave cylinder. The connecting concave cylinder is fixedly connected to a rotary drive assembly, which is also fixedly connected to a lifting assembly. The rotary drive assembly is configured to drive the dispensing cone to rotate, and the lifting assembly is configured to drive the rotary drive assembly to move up and down.

[0007] Furthermore, the rotary drive assembly includes a plate body. A rotary motor is fixedly connected to one end of the plate body. The output end of the rotary motor passes through the plate body and is connected to the center of a transmission column. The end of the transmission column away from the rotary motor is fixedly connected to a connecting protrusion, which is fixedly connected to a connecting concave cylinder. A mounting plate is fixedly connected to the other end of the plate body, and the mounting plate is fixedly connected to the lifting assembly.

[0008] Furthermore, the lifting assembly includes a lifting cylinder and a support base. Two lifting cylinders are fixed side by side on the support base, with the piston rods of the lifting cylinders extending upwards. The extended ends of the piston rods of both lifting cylinders are fixedly connected to the mounting plate.

[0009] Furthermore, the inner wall of the connecting concave cylinder is provided with multiple grooves equidistantly on the circumferential side, and the outer wall of the connecting convex cylinder is fixedly connected with multiple corresponding protrusions equidistantly on the circumferential side, with each protrusion being inserted into the corresponding groove in an interference fit manner.

[0010] Furthermore, the liquid collection assembly includes a base plate and support columns. The liquid collection tank is fixedly connected to the base plate, and multiple support columns surround the liquid collection tank. The two ends of the support columns are respectively fixedly connected to the bottom surface of the liquid collection ring groove and the base plate.

[0011] Furthermore, the liquid collection assembly includes mounting strips, multiple mounting strips are circumferentially fixed to the bottom opening edge of the liquid-blocking conical ring plate, a bearing seat is located in the middle of the multiple mounting strips and is fixedly connected to the multiple mounting strips, the bearing is fixedly connected to the bearing seat, and the end of the central rotating shaft away from the connecting concave cylinder is located below the liquid-distributing conical plate and inserted into the bearing.

[0012] Furthermore, the recycling bin includes a bin body, a bin cover is fixedly connected to the top of the bin body, and the end of the recycling chute away from the liquid collection ring chute extends into the bin body.

[0013] Furthermore, the interior of the liquid collection tank is connected to the outside via a recovery pipe.

[0014] Furthermore, the liquid dispensing assembly includes a detachable circular cover, which is fixedly connected to the center of the central rotating shaft and is sealed and fixedly connected to the center of the liquid dispensing cone.

[0015] This invention also claims a cleaning method using the above-described contaminated cutting fluid cleaning and recovery device for CNC machine tools, comprising the following steps: S101: Start the lifting cylinder of the price increase component, drive the rotation drive component to lift, and at the same time drive the liquid separation component fixedly connected to the rotation drive component to lift. S102: Adjust the lifting and lowering of the liquid separating component so that the liquid separating cone plate falls into the liquid collecting plate of the liquid collecting component until the plane of the top edge of the liquid blocking cone plate passes through the liquid outlet hole on the liquid separating cone plate. S103: Pour the contaminated cutting fluid to be filtered and cleaned into the separatory cone, so that the liquid level of the cutting fluid is below the liquid outlet of the separatory cone. S104: Start the rotary motor in the rotary drive assembly to drive the separating cone to rotate. The cutting fluid is subjected to centrifugal force and flows upward along the inner wall of the separating cone to overflow from the outlet hole. Larger particles of impurities in the cutting fluid remain in the separating cone. S105: The cutting fluid overflowing from the outlet hole first splashes onto the liquid-blocking conical ring plate, and then flows upward along the inner wall until it passes over the outlet ring plate and flows into the collection ring groove. Smaller particulate impurities in the cutting fluid are blocked by the liquid-blocking conical ring plate and flow downward along with some of the cutting fluid into the collection tank. S106: The clean cutting fluid flowing into the collecting ring tank finally flows into the recovery tank through the recovery chute to complete the cleaning and recovery of the cutting fluid. S107: The cutting fluid containing small particles that flows into the collection tank is taken out through the recovery pipe and poured back into the separatory cone for cleaning.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) This invention can realize the automatic classification and separation of impurities of different particle sizes in cutting fluid. By combining the multiple outlet holes on the dividing cone with the liquid-blocking conical ring plate in the collecting pan, two separation paths for impurities of different particle sizes are established. For the interception of large particle impurities, the contaminated cutting fluid rises upward along the inner wall of the dividing cone under the action of centrifugal force. Due to their large mass and significant centrifugal sedimentation, the larger particle impurities cannot pass through the outlet holes near the top edge of the dividing cone and are effectively retained in the inner cavity at the bottom of the dividing cone, thus achieving initial separation from the large flow of cutting fluid. For the obstruction and sedimentation of small particle impurities, the cutting fluid overflowing from the outlet holes carries the small particle impurities and first sprays them at high speed onto the inner wall of the liquid-blocking conical ring plate. Since the liquid-blocking conical ring plate has a conical structure that is larger at the top and smaller at the bottom, the small particle impurities lose their kinetic energy rapidly after hitting the inner wall and cannot continue to rise. They can only flow downward along the inner wall of the liquid-blocking conical ring plate with some of the cutting fluid and finally fall into the collecting tank directly below through its bottom opening. It enables automatic classification and separation of impurities of different particle sizes in cutting fluid, significantly improving the overall effect of cutting fluid treatment.

[0017] (2) The present invention allows for real-time and continuous adjustment of the separation precision of impurities in cutting fluid. The lifting assembly includes two lifting cylinders fixed side-by-side on the support base, with their piston rod extensions fixedly connected to the mounting plate. When the lifting cylinders are activated, the separating cone plate rises and falls relative to the stationary collecting plate. By changing the descent height of the separating cone plate, the vertical distance between the top edge of the liquid-blocking conical ring plate and the outlet hole can be precisely adjusted. The greater this distance, the greater the height the cutting fluid needs to climb along the inner wall of the liquid-blocking conical ring plate after overflowing from the outlet hole. The higher the probability that small particles of impurities will be blocked by gravity and fall into the collecting tank during the climbing process, the higher the purity of the obtained cutting fluid. Conversely, the smaller this distance, the easier it is for the cutting fluid to pass over the top of the liquid-blocking conical ring plate and enter the collecting ring groove, resulting in a faster processing speed. This adjustment does not require the replacement of any parts and can be quickly completed before or during equipment operation, enabling a single device to adapt to different operating conditions from coarse filtration to fine filtration.

[0018] (3) The present invention has a compact structure and is easy to maintain. The connecting concave cylinder and the connecting convex cylinder are connected by an interference fit of groove and convex, which is convenient for disassembly and assembly and facilitates the separation and maintenance of the liquid separation component and the rotary drive component. The liquid separation cone is provided with a disassembly cover in the center. After opening, large particles of impurities deposited inside can be cleaned directly, avoiding the need to disassemble the entire liquid separation cone. The bearing is fixed at the bottom opening of the liquid-blocking cone ring plate by the mounting strip and bearing seat, providing stable support for the central rotating shaft and ensuring the concentricity of rotation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention. Figure 1 ; Figure 2This is a schematic diagram of the overall structure of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention. Figure 2 ; Figure 3 This is a partial cross-sectional schematic diagram of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the liquid collection assembly structure of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention; Figure 5 This is a partial cross-sectional schematic diagram of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the liquid separation component structure of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention; Figure 7 This is a schematic diagram of the rotary drive assembly structure of a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention; Figure 8 This is a flowchart of a cleaning method for a contaminated cutting fluid cleaning and recovery device for CNC machine tools according to the present invention.

[0020] The attached figures are labeled as follows: 100. Liquid collection assembly; 101. Base plate; 102. Support column; 103. Liquid collection ring groove; 104. Liquid collection tray; 1041. Liquid-blocking conical ring plate; 1042. Liquid outlet ring plate; 105. Recovery chute; 106. Bearing; 107. Liquid collection tank; 108. Mounting strip; 109. Bearing housing; 200. Dispensing assembly; 201. Dispensing cone; 202. Dispensing hole; 203. Connecting concave cylinder; 204. Groove; 205. Central rotating shaft; 207. Removable round cover; 300. Rotary drive assembly; 301. Plate; 302. Rotary motor; 303. Transmission column; 304. Connecting protrusion; 305. Protrusion; 306. Mounting plate; 400. Lifting assembly; 401. Lifting cylinder; 402. Support base; 500. Recycling bin; 501. Bin body; 502. Bin lid; 503. Recycling pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] Although the steps in this invention are arranged by reference numerals, this is not intended to limit the order of the steps. Unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" as used herein refers to and covers any and all possible combinations of one or more of the associated listed items.

[0023] Example like Figures 1-8 As shown, a contaminated cutting fluid cleaning and recovery device for CNC machine tools includes a fluid collection assembly 100 and a fluid distribution assembly 200. The fluid collection assembly 100 includes a fluid collection tray 104, which is composed of a fluid-blocking conical ring plate 1041 and a fluid-discharging ring plate 1042. The top edge of the fluid-discharging ring plate 1042 is fixedly connected to the top edge of the fluid-blocking conical ring plate 1041, and the bottom edge of the fluid-discharging ring plate 1042 is fixedly connected to the inner edge of the fluid collection ring groove 103. One end of the recovery chute 105 is fixedly connected to and communicates with the fluid collection ring groove 103, and the other end of the recovery chute 105 extends into the inner cavity of the recovery tank 500. The fluid collection tank 107 is located directly below the fluid collection tray 104, and the bottom opening of the fluid-blocking conical ring plate 1041 faces the fluid collection tank 107. The liquid dispensing assembly 200 includes a dispensing cone 201 with multiple outlet holes 202. The openings of the dispensing cone 201 face upwards, and the multiple outlet holes 202 are at the same height and close to the top edge of the dispensing cone 201. The central axes of the dispensing cone 201 and the collecting tray 104 are aligned. The diameter of the dispensing cone 201 is no larger than a certain value. A central rotating shaft 205 is fixedly connected to the center of the dispensing cone 201. One end of the central rotating shaft 205 near the opening of the dispensing cone 201 is fixedly connected to a connecting concave cylinder 203. The connecting concave cylinder 203 is fixedly connected to a rotary drive assembly 300, which is also fixedly connected to a lifting assembly 400. The rotary drive assembly 300 is configured to drive the dispensing cone 201 to rotate, and the lifting assembly 400 is configured to drive the rotary drive assembly 300 to move up and down.

[0024] In this invention, automatic classification and separation of impurities of different particle sizes in cutting fluid can be achieved. By cooperating with the multiple outlet holes 202 on the separating cone 201 and the liquid-blocking cone ring plate 1041 in the collecting plate 104, two separation paths for impurities of different particle sizes are established. For the interception of large particles, the contaminated cutting fluid rises upward along the inner wall of the separating cone 201 under the action of centrifugal force. Larger particles, due to their large mass and significant centrifugal sedimentation effect, cannot pass through the outlet holes 202 near the top edge of the separating cone 201 and are effectively retained in the bottom cavity of the separating cone 201, thereby achieving initial separation from the high-flow-rate cutting fluid. For the obstruction and sedimentation of small particulate impurities, the cutting fluid overflowing from the outlet 202, carrying these impurities, first sprays at high speed onto the inner wall of the liquid-blocking conical ring plate 1041. Because the liquid-blocking conical ring plate 1041 has a conical structure that is wider at the top and narrower at the bottom, the small particulate impurities lose kinetic energy rapidly upon impact with the inner wall and cannot continue to rise. They can only flow downwards along the inner wall of the liquid-blocking conical ring plate 1041 along with some of the cutting fluid, eventually falling into the collection tank 107 directly below through its bottom opening. Finally, the clean cutting fluid is collected. The relatively clean cutting fluid, propelled by centrifugal force and subsequent liquid flow, continues to rise along the inner wall of the liquid-blocking conical ring plate 1041 until it crosses the top edge. Then, it flows into the collection ring trough 103 through the outer wall or top of the outlet ring plate 1042, and finally enters the body 501 of the recovery tank 500 through the recovery chute 105. This ultimately achieves a one-time separation of large particles, small particles, and clean cutting fluid, significantly improving the overall effect of cutting fluid treatment.

[0025] Furthermore, the rotary drive assembly 300 includes a plate 301. One end of the plate 301 is fixedly connected to a rotary motor 302. The output end of the rotary motor 302 passes through the plate 301 and is centrally connected to a transmission column 303. The end of the transmission column 303 away from the rotary motor 302 is fixedly connected to a connecting protrusion 304, which is fixedly connected to a connecting concave cylinder 203. The other end of the plate 301 is fixedly connected to a mounting plate 306, which is fixedly connected to the lifting assembly 400.

[0026] In this invention, the rotary motor 302 in the rotary drive assembly 300 directly drives the dispensing cone disk 201 to rotate via the transmission column 303, the connecting convex cylinder 304, and the connecting concave cylinder 203. When the rotational speed of the rotary motor 302 increases, the centrifugal force on the cutting fluid on the inner wall of the dispensing cone disk 201 increases, the upward climbing speed along the cone surface accelerates, and the flow rate of cutting fluid overflowing from the outlet hole 202 per unit time increases, thereby improving the overall processing speed.

[0027] Furthermore, the lifting assembly 400 includes a lifting cylinder 401 and a support base 402. The two lifting cylinders 401 are fixed side by side on the support base 402. The piston rods of the lifting cylinders 401 extend upwards, and the extended ends of the piston rods of the two lifting cylinders 401 are fixedly connected to the mounting plate 306.

[0028] Furthermore, the inner wall of the connecting concave cylinder 203 is provided with a plurality of grooves 204 at equal intervals in the circumferential direction, and the outer wall of the connecting convex cylinder 304 is fixedly connected with a plurality of corresponding protrusions 305 at equal intervals in the circumferential direction. Each protrusion 305 is inserted into the corresponding groove 204 in an interference fit manner.

[0029] In this invention, multiple grooves 204 are equidistantly formed on the inner wall of the connecting concave cylinder 203, and multiple corresponding protrusions 305 are equidistantly fixed on the outer wall of the connecting convex cylinder 304. Each protrusion 305 is inserted into the corresponding groove 204 with an interference fit. This structure ensures reliable transmission of rotational torque and allows the liquid distribution assembly 200 and the rotary drive assembly 300 to be quickly separated without tools, facilitating the overall removal and maintenance of the liquid distribution cone 201.

[0030] Furthermore, the liquid collection assembly 100 includes a base plate 101 and support columns 102. The liquid collection tank 107 is fixedly connected to the base plate 101, and a plurality of support columns 102 surround the liquid collection tank 107. The two ends of the support columns 102 are respectively fixedly connected to the bottom surface of the liquid collection ring groove 103 and the base plate 101.

[0031] In this invention, the base plate 101 and the support column 102 form a stable support frame. The two ends of the support column 102 are fixedly connected to the bottom surface of the liquid collection ring groove 103 and the base plate 101, respectively. The liquid collection tank 107 is fixed to the base plate 101 to ensure that the entire device remains stable under high-speed rotation and frequent lifting conditions.

[0032] Furthermore, the liquid collection assembly 100 includes mounting strips 108, a plurality of mounting strips 108 being circumferentially fixedly connected to the bottom opening edge of the liquid-blocking conical ring plate 1041, a bearing seat 109 being located in the middle of the plurality of mounting strips 108 and fixedly connected to the plurality of mounting strips, a bearing 106 being fixedly connected to the bearing seat 109, and a central rotating shaft 205 having one end away from the connecting concave cylinder 203 located below the liquid-distributing conical disk 201 and inserted into the bearing 106.

[0033] In this invention, multiple mounting strips 108 are circumferentially fixed to the bottom opening edge of the liquid-blocking conical ring plate 1041. A bearing seat 109 is located in the middle of the mounting strips 108 and fixedly connected to them. A bearing 106 is fixed to the bearing seat 109. The end of the central rotating shaft 205 away from the connecting concave cylinder 203 is inserted into the bearing 106. This structure provides precise rotational support for the lower end of the distributing cone 201, ensuring the alignment of the central axis of the distributing cone 201 with the collecting plate 104, and preventing eccentric swaying during high-speed rotation.

[0034] Furthermore, the recycling bin 500 includes a bin body 501, a bin cover 502 is fixedly connected to the top of the bin body 501, and the recycling chute 105 extends into the bin body 501 at one end away from the liquid collection ring groove 103.

[0035] Furthermore, the interior of the liquid collection tank 107 is connected to the outside via a recovery pipe 503.

[0036] In this invention, when a certain amount of cutting fluid containing small particulate impurities accumulates in the collection tank 107, the operator can remove it through the recovery pipe 503 and pour it back into the separating cone 201 for secondary or even multiple cleaning. After repeated circulation, the purity of the cutting fluid, which originally contained small particulate impurities, can be gradually improved until it meets the recycling standard. This design significantly improves the overall recycling rate of cutting fluid and reduces waste fluid discharge.

[0037] Furthermore, the liquid dispensing assembly 200 includes a detachable round cover 207, which is fixedly connected to the center of the central rotating shaft 205 and is sealed and fixedly connected to the center of the liquid dispensing cone 201.

[0038] In this invention, the center of the separating cone 201 is fixedly connected to the central rotating shaft 205 via a detachable round cover 207, which is sealed and fixed to the center of the separating cone 201. When it is necessary to clean large particulate impurities deposited inside the separating cone 201, simply remove the detachable round cover 207 to remove the impurities from the central opening, without disassembling the entire separating cone 201 or any peripheral components, thus significantly reducing maintenance downtime.

[0039] This invention also claims a cleaning method using the above-described contaminated cutting fluid cleaning and recovery device for CNC machine tools, comprising the following steps: S101: Start the lifting cylinder 401 of the price increase component 400 to drive the lifting of the rotary drive component 300, and at the same time drive the liquid separation component 200 fixedly connected to the rotary drive component 300 to lift. S102: Adjust the lifting and lowering of the liquid separating assembly 200 so that part of the liquid separating cone 201 falls into the liquid collecting plate 104 of the liquid collecting assembly 100 until the plane of the top edge of the liquid blocking cone ring plate 1041 passes through the liquid outlet hole 202 on the liquid separating cone 201. S103: Pour the contaminated cutting fluid to be filtered and cleaned into the separating cone 201, so that the liquid level of the cutting fluid is below the liquid outlet 202 of the separating cone 201. S104: Start the rotary motor 302 in the rotary drive assembly 300 to drive the liquid separator 201 to rotate. The cutting fluid is subjected to centrifugal force and flows upward along the inner wall of the liquid separator 201 to overflow from the outlet hole 202. Larger particles of impurities in the cutting fluid remain in the liquid separator 201. S105: The cutting fluid overflowing from the outlet hole 202 first splashes onto the liquid-blocking conical ring plate 1041, and then flows upward along the inner wall until it passes over the outlet ring plate 1042 and flows into the collection ring groove 103. Smaller particulate impurities in the cutting fluid are blocked by the liquid-blocking conical ring plate 1041 and flow downward along with part of the cutting fluid into the collection tank 107. S106: The clean cutting fluid flowing into the collecting ring tank 103 finally flows into the tank body 501 of the recovery tank 500 through the recovery chute 105 to complete the cleaning and recovery of the cutting fluid. S107: The cutting fluid containing small particles that flows into the collection tank 107 is taken out through the recovery pipe 503 and then poured back into the separatory cone for cleaning.

[0040] It is worth noting that the present invention allows for real-time and continuous adjustment of the separation accuracy of impurities in the cutting fluid. The lifting assembly 400 includes two lifting cylinders 401 fixed side-by-side on the support base 402, with their piston rod extensions fixedly connected to the mounting plate 306. The mounting plate 306 is ultimately fixedly connected to the distributing cone 201 via the plate body 301, transmission column 303, connecting protrusion 304, and connecting concave cylinder 203. Therefore, when the lifting cylinders 401 are activated, the distributing cone 201 rises and falls relative to the stationary collection plate 104. By changing the descent height of the distributing cone 201, the vertical distance between the top edge of the liquid-blocking conical ring plate 1041 and the outlet hole 202 can be precisely adjusted. The greater this distance, the greater the height the cutting fluid needs to climb along the inner wall of the liquid-blocking conical ring plate 1041 after overflowing from the outlet 202. This increases the probability that small particles of impurities will be blocked by gravity and fall into the collection tank 107 during the climb, resulting in higher cutting fluid purity. Conversely, the smaller the distance, the easier it is for the cutting fluid to pass over the top of the liquid-blocking conical ring plate 1041 and enter the collection ring groove 103, leading to faster processing. This adjustment requires no replacement of any parts and can be quickly completed before or during equipment operation, enabling a single unit to adapt to different working conditions, from coarse filtration to fine filtration.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A contaminated cutting fluid cleaning and recycling device for a numerical control machine tool, characterized by, The system includes a liquid collection assembly (100) and a liquid distribution assembly (200). The liquid collection assembly (100) includes a liquid collection tray (104), which is composed of a liquid-blocking conical ring plate (1041) and a liquid outlet ring plate (1042). The top edge of the liquid outlet ring plate (1042) is fixedly connected to the top edge of the liquid-blocking conical ring plate (1041), and the bottom edge of the liquid outlet ring plate (1042) is fixedly connected to the inner edge of the liquid collection ring groove (103). One end of the recovery chute (105) is fixedly connected to and communicates with the liquid collection ring groove (103). The other end of the recovery chute (105) extends into the inner cavity of the recovery tank (500). The liquid collection tank (107) is located directly below the liquid collection tray (104), and the bottom opening of the liquid-blocking conical ring plate (1041) faces into the liquid collection tank (107). The liquid separation assembly (200) includes a liquid separation cone (201), on which a plurality of liquid outlet holes (202) are opened. The opening of the liquid separation cone (201) faces upward. The plurality of liquid outlet holes (202) are at the same height and close to the top edge of the liquid separation cone (201). The central axis of the liquid separation cone (201) and the liquid collection plate (104) are aligned. The diameter of the liquid separation cone (201) is not greater than 1. A central rotating shaft (205) is fixedly connected to the center of the liquid separation cone (201). One end of the central rotating shaft (205) near the opening of the liquid separation cone (201) is fixedly connected to a connecting concave cylinder (203). The connecting concave cylinder (203) is fixedly connected to a rotary drive assembly (300). The rotary drive assembly (300) is also fixedly connected to a lifting assembly (400). The rotary drive assembly (300) is configured to drive the dispensing cone (201) to rotate, and the lifting assembly (400) is configured to drive the rotary drive assembly (300) to move up and down.

2. The device for cleaning and recycling contaminated cutting fluid for CNC machine tools according to claim 1, characterized in that, The rotary drive assembly (300) includes a plate (301), one end of which is fixedly connected to a rotary motor (302). The output end of the rotary motor (302) passes through the plate (301) and is centrally connected to a transmission column (303). The end of the transmission column (303) away from the rotary motor (302) is fixedly connected to a connecting protrusion (304), which is fixedly connected in a connecting concave cylinder (203). The other end of the plate (301) is fixedly connected to the mounting plate (306), and the mounting plate (306) is fixedly connected to the lifting assembly (400).

3. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 2, characterized in that, The lifting assembly (400) includes a lifting cylinder (401) and a support base (402). The two lifting cylinders (401) are fixed side by side on the support base (402). The piston rods of the lifting cylinders (401) extend upwards, and the extended ends of the piston rods of the two lifting cylinders (401) are fixedly connected to the mounting plate (306).

4. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 2, characterized in that, The inner wall of the connecting concave cylinder (203) is provided with a plurality of grooves (204) equidistantly arranged in the circumferential direction, and the outer wall of the connecting convex cylinder (304) is fixedly connected with a plurality of corresponding protrusions (305) equidistantly arranged in the circumferential direction. Each of the protrusions (305) is inserted into the corresponding groove (204) in an interference fit manner.

5. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 1, characterized in that, The liquid collection assembly (100) includes a base plate (101) and support columns (102). The liquid collection tank (107) is fixedly connected to the base plate (101). Multiple support columns (102) surround the liquid collection tank (107). The two ends of the support columns (102) are fixedly connected to the bottom surface of the liquid collection ring groove (103) and the base plate (101), respectively.

6. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 1, characterized in that, The liquid collection assembly (100) includes mounting strips (108), a plurality of mounting strips (108) are circumferentially fixedly connected to the bottom opening edge of the liquid-blocking conical ring plate (1041), a bearing seat (109) is located in the middle of the plurality of mounting strips (108) and is fixedly connected to the plurality of mounting strips, a bearing (106) is fixedly connected to the bearing seat (109), and the end of the central rotating shaft (205) away from the connecting concave cylinder (203) is located below the liquid-distributing conical disk (201) and inserted into the bearing (106).

7. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 1, characterized in that, The recycling bin (500) includes a bin body (501), a bin cover (502) is fixedly connected to the top of the bin body (501), and the recycling chute (105) extends into the bin body (501) at the end away from the liquid collection ring chute (103).

8. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 1, characterized in that, The inside of the liquid collection tank (107) is connected to the outside through the recovery pipe (503).

9. The contaminated cutting fluid cleaning and recovery device for CNC machine tools according to claim 1, characterized in that, The liquid separation assembly (200) includes a detachable round cover (207), which is fixedly connected to the center of the central rotating shaft (205) and is sealed and fixedly connected to the center of the liquid separation cone (201).

10. A cleaning method using the contaminated cutting fluid cleaning and recovery device for CNC machine tools according to any one of claims 1 to 9, characterized in that, Includes the following steps: S101: Start the lifting cylinder (401) of the price increase component (400) to drive the rotation drive component (300) to lift, and at the same time drive the liquid separation component (200) fixedly connected to the rotation drive component (300) to lift. S102: Adjust the lifting of the liquid separating assembly (200) so that part of the liquid separating cone (201) falls into the liquid collecting plate (104) of the liquid collecting assembly (100) until the plane of the top edge of the liquid blocking cone ring plate (1041) passes through the liquid outlet hole (202) on the liquid separating cone (201). S103: Pour the contaminated cutting fluid to be filtered and cleaned into the separating cone (201) so that the liquid level of the cutting fluid is below the liquid outlet (202) of the separating cone (201); S104: Start the rotary motor (302) in the rotary drive assembly (300) to drive the liquid separator (201) to rotate. The cutting fluid is subjected to centrifugal force and flows upward along the inner wall of the liquid separator (201) to overflow from the outlet hole (202). Larger particles of impurities in the cutting fluid remain in the liquid separator (201). S105: The cutting fluid overflowing from the outlet hole (202) first splashes onto the liquid-blocking conical ring plate (1041), and then flows upward along the inner wall until it passes over the outlet ring plate (1042) and flows into the collection ring groove (103). Smaller particulate impurities in the cutting fluid are blocked by the liquid-blocking conical ring plate (1041) and flow downward along with part of the cutting fluid into the collection tank (107). S106: The clean cutting fluid flowing into the collecting ring tank (103) finally flows into the tank body (501) of the recycling tank (500) through the recycling chute (105) to complete the cleaning and recycling of the cutting fluid; S107: The cutting fluid containing small particles that flows into the collection tank (107) is taken out through the recovery pipe (503) and then poured back into the separatory cone for cleaning.

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