A device for recovering metal chips in the working fluid of a numerical control machine tool and a method of use

Abstract

The application provides a metal chip recycling device in a working fluid of a numerical control machine tool and a use method, and belongs to the technical field of numerical control machining centers. The device comprises a wire cutting main body, a metal piece to be machined, a cooling barrel assembly, a primary separation assembly, a primary separation liquid pipe assembly, a magnetic chip placing box assembly, a chip suction assembly, a secondary separation assembly, a cylinder assembly, a temporary storage barrel assembly and a PLC control system. The metal piece to be machined is machined by the wire cutting main body, the working fluid and the metal chip flow into the cooling barrel assembly, the large-particle metal chip is left in the solid storage basket of the primary separation assembly, the small-particle metal chip and the working fluid flow into the secondary separation assembly for secondary separation, the separated working fluid is returned to the liquid storage tank through the temporary storage barrel assembly, and the metal chip in the solid storage basket is moved to the magnetic chip placing box assembly through the movement of the chip suction assembly. The application realizes the separation and recycling of the metal chip in the working fluid, and improves the resource utilization efficiency of the whole machining process.

Description

Technical Field

[0001] This invention belongs to the technical field of CNC machining centers, specifically relating to a device for recovering metal debris from the working fluid of a CNC machine tool and its usage method. Background Technology

[0002] With the expansion of industrial production scale and the development of manufacturing technology, wire electrical discharge machining (EDM) technology, as a type of CNC machine tool for special processing, has been widely used in mechanical processing due to its high machining accuracy, high production efficiency, low power consumption, and low manufacturing cost. Particularly in the mold processing industry, EDM technology is widely used in the processing of cold stamping dies and extrusion dies, changing the past processing mode of using separate dies and curve grinding, shortening the manufacturing cycle, reducing manufacturing costs, and achieving high precision. Because wire EDM processing differs from general metal cutting processes and belongs to electrical discharge machining, the wire EDM machining fluid, in addition to having functions such as cooling, chip removal, lubrication, and rust prevention, also directly participates in the machining process as a discharge medium.

[0003] In the mold processing industry, cold stamping dies, extrusion dies, and other components are all made of metal. During their processing, a large amount of metal debris is generated. In existing technology, a simple filter device is usually placed near the processing platform. If the filtration accuracy of the simple filter device is high, it is necessary to frequently stop the equipment to clean the metal debris. If the filtration accuracy of the simple filter device is low, the circulating working fluid will contain large metal debris particles, which can easily clog the working fluid nozzle and cause instability in the wire EDM working fluid. The metal debris in the working fluid will have an adverse effect on the wire EDM machine tool and the working fluid, reduce the processing quality of the parts, and also increase conductivity, making it easier to cause arc extinguishing and reduce the effectiveness of the wire EDM equipment.

[0004] Authorization announcement number CN116275336B discloses a protective cover for wire EDM machines that is easy to install. By disassembling the protective cover into six independent components, assembly can be completed before installation on the wire EDM machine, significantly reducing assembly difficulty, saving assembly time and costs. The oil tank cover component prevents cutting fluid splashing, and the head cover component can recycle cutting fluid mist, achieving cutting fluid recycling. Assemblers can install the top plate and side panels of the cover using the connecting blocks and connecting grooves without assistance, making it more convenient and reducing manpower consumption. Furthermore, the positioning rod can be accurately positioned by moving the adjusting plate in any direction within the movable hole, preventing deformation of the side panels from hindering positioning. While this invention can recycle cutting fluid mist, it does not treat metal shavings in the cutting fluid, and the protective cover components cannot provide timely information on the accumulation of metal shavings, leading to problems such as delayed cleaning and affecting the quality of machined parts. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a metal debris recovery device and method for CNC machine tool working fluid. This effectively solves the problems of existing technologies that typically place a simple filter near the machining platform. If the filter has high filtration accuracy, frequent equipment stops are required to clean the metal debris. If the filter has low filtration accuracy, the recycled working fluid will contain large metal debris particles, easily clogging the working fluid nozzle and causing instability in the wire EDM working fluid. This results in metal debris in the working fluid adversely affecting the wire EDM machine tool and the working fluid, reducing the machining quality of the workpiece, increasing conductivity, and increasing the risk of arc extinguishing, thus reducing the effectiveness of the wire EDM equipment. To achieve the above objectives, the present invention provides the following technical solution: a metal scrap recovery device in CNC machine tool working fluid, comprising a wire cutting body, a metal part to be processed, a cooling tank assembly, a primary separation assembly, a primary separation outlet pipe assembly, a magnetic scrap placement box assembly, a scrap suction assembly, a re-separation assembly, a cylinder assembly, a temporary storage tank assembly, and a PLC control system; the primary separation assembly is located at the rear end of the cooling tank assembly; one end of the primary separation outlet pipe assembly is connected to the primary separation assembly, and the other end of the primary separation outlet pipe assembly is connected to the re-separation assembly; the magnetic scrap placement box assembly is located on one side of the primary separation assembly, and the scrap suction assembly is located on top of and connected to the magnetic scrap placement box assembly; The cylinder assembly is located inside the cylinder protection seat at the bottom of the re-separation assembly; the temporary storage tank assembly is located at the rear end of the re-separation assembly; the metal part to be processed is processed by the wire cutting body, the working fluid flows out from the liquid storage tank of the wire cutting body and is sprayed onto the surface of the metal part to be processed, the working fluid and metal chips flow together into the cooling tank assembly, large metal chips are left in the solid storage basket of the primary separation assembly, small metal chips and working fluid flow into the re-separation assembly for further separation, the separated working fluid returns to the liquid storage tank through the temporary storage tank assembly, and the metal chips in the solid storage basket are transferred to the magnetic chip placement box assembly by the movement of the chip suction assembly.

[0006] Preferably, the cooling tank assembly has a vent hole at the top, a shut-off valve at the discharge end of the cooling tank assembly, a rubber hose as the main pipe of the initial separation liquid outlet pipe assembly, a temporary storage tank drain pipe at the outlet end of the temporary storage tank assembly, and a liquid pump on the temporary storage tank drain pipe.

[0007] Preferably, the initial separation assembly further includes a coarse separation cylinder and a conversion cylinder. The coarse separation cylinder is located at the top of the conversion cylinder and is fixedly connected to it. A first groove is provided inside the coarse separation cylinder, through which the solid storage basket is engaged within the coarse separation cylinder. A first through hole is provided at the bottom and around the perimeter of the solid storage basket.

[0008] Preferably, the magnetic debris placement box assembly includes a placement box body, a first sensor assembly, a second sensor assembly, a pull-out baffle, an electric push rod mounting plate, a push rod support frame assembly, a push rod extension shaft guide plate, and a placement box base. The placement box base is located at the bottom of the placement box body and is fixedly connected to it. The first sensor assembly and the second sensor assembly are both located at the top of the placement box body and are fixedly connected to it. The first sensor assembly is provided with a first sensor, and the second sensor assembly is provided with a second sensor. A second groove is formed on the outer top of one side of the placement box body, and the pull-out baffle is engaged in the second groove. The electric push rod mounting plate is located on the other side of the placement box body and is fixedly connected to it. A push rod support plate is provided at the bottom of the electric push rod mounting plate. The push rod support frame assembly is located at the top of the electric push rod mounting plate and is fixedly connected to it. The push rod extension shaft guide plate is located at the top of the other side of the placement box body and is fixedly connected to it.

[0009] Preferably, the chip suction assembly includes an electric push rod, an insulating plate, a locking screw assembly, and an electromagnetic strip. The electric push rod is fixedly connected to the electric push rod mounting plate. The locking screw assembly locks the insulating plate and the extension shaft of the electric push rod. The insulating plate has a through hole, and the electromagnetic strip is located at the bottom of the insulating plate and fixedly connected to it.

[0010] Preferably, the insulating plate includes a horizontal plate and a vertical plate. A sensing plate is provided on the front side of the vertical plate of the insulating plate near the guide plate of the push rod extension shaft. A through hole is provided on the guide plate of the push rod extension shaft. The insulating plate and the electromagnetic strip are flush on the side away from the guide plate of the push rod extension shaft. When the chip collection assembly moves, when the sensing plate is sensed by the first sensor, the movement of the chip collection assembly stops and the electromagnetic strip is energized. Metal chips are adsorbed on the lower surface of the electromagnetic strip. After standing for a period of time, the electric push rod is retracted. When the sensing plate is sensed by the second sensor, the movement of the chip collection assembly stops and the electromagnetic strip is de-energized. The metal chips adsorbed on the electromagnetic strip fall into the magnetic chip placement box assembly.

[0011] Preferably, the re-separation assembly further includes a separation chamber body, a separation chamber top cover, a triggering component, a separation chamber support frame, a separation chamber drain pipe concentrator assembly, a first elastic support assembly, and a second elastic support assembly. The separation chamber top cover is located at the top of the separation chamber body, the triggering component is located on the side of the separation chamber body away from the initial separation drain pipe assembly, the separation chamber support frame is connected to the separation chamber body, the separation chamber drain pipe concentrator assembly is located at the bottom of the separation chamber body and communicates with it, one end of the first elastic support assembly is fixedly connected to the separation chamber body, and the other end is fixedly connected to the cylinder protection seat, and one end of the second elastic support assembly is fixedly connected to the separation chamber body, and the other end is fixedly connected to the cylinder protection seat.

[0012] Preferably, the separation chamber is equipped with a first filter plate and a second filter plate, which divide the separation chamber into three regions, A, B, and C, respectively. When working fluid flows into region A of the separation chamber, solid particles in the working fluid are isolated in region A, and the liquid is distributed in regions A and B. When the liquid in regions A and B reaches a preset height, the working fluid flows to region C. A first drain outlet is opened at the bottom of region B of the separation chamber, and a second drain outlet is opened at the bottom of region C of the separation chamber. A sealing door is opened on the side of region A of the separation chamber away from region B. Support shafts are provided on both the front and back of the separation chamber. A sensing cylinder is provided on the side of region C of the separation chamber away from region B, and a third spring is connected inside the sensing cylinder. A separation chamber deflection shaft is provided at the bottom of the separation chamber. A separation chamber inlet is provided on the top cover plate of the separation chamber, and the separation chamber inlet is located at the top of region A of the separation chamber. The triggering component is equipped with an inductive switch. The separation box support frame includes a guide frame, a bearing seat fixedly connected to the guide frame, and a bearing located inside the bearing seat. The guide frame is respectively equipped with a first fixing clip and a second fixing clip. The first fixing clip and the second fixing clip are fastened by bolts to form a guide hole. The separation box drain pipe collection assembly is respectively connected to the first drain port and the second drain port. The separation box drain pipe collection assembly is respectively equipped with a first solenoid valve and a second solenoid valve. The first solenoid valve is located below the first drain port, and the second solenoid valve is located below the second drain port. The connecting pipes between the first drain port and the first solenoid valve, and between the second drain port and the second solenoid valve, are all flexible hoses. The cylinder protection seat is provided with several air pipe fixing holes. The first elastic support assembly includes a first spring, a connecting cylinder, and a fixing seat. Both ends of the first spring are connected to the connecting cylinder. The second elastic support assembly is equipped with a second spring.

[0013] Preferably, the cylinder assembly includes a cylinder housing, a cylinder top plate, a cylinder bottom plate, a piston, a piston rod, a piston rod connector, and a fourth spring. The cylinder top plate is located at the top of the cylinder housing and is fixedly connected to it. The cylinder bottom plate is located at the bottom of the cylinder housing and is fixedly connected to it. The piston is located inside the cylinder housing. The piston rod is located at the top of the piston and is fixedly connected to it. The piston rod passes through the cylinder top plate and is connected to the separator housing via the piston rod connector. The fourth spring is located between the piston and the cylinder bottom plate, and is located inside the cylinder housing. The piston divides the cylinder assembly into two regions, D and E. Region C of the cylinder housing is located near the separator housing. A first intake pipe and a second intake pipe are provided on one side of the cylinder assembly. The first intake pipe is connected to region D of the cylinder assembly and is equipped with a first one-way valve. The second intake pipe is connected to region E of the cylinder assembly and is equipped with a second one-way valve. A first exhaust pipe and a second exhaust pipe are provided on the side of the cylinder housing near region A of the separator box. The first exhaust pipe is connected to region D of the cylinder assembly and is equipped with a third one-way valve. The second exhaust pipe is connected to region E of the cylinder assembly and is equipped with a fourth one-way valve. The gas in the first exhaust pipe and the second exhaust pipe both enter the combined exhaust pipe, which is equipped with a fifth one-way valve.

[0014] The present invention also provides a method for using a metal scrap recovery device in CNC machine tool working fluid, the method comprising a metal scrap recovery method S1 and a working fluid recycling method S2;

[0015] Wherein: Metal scrap recycling method S1 includes the following steps:

[0016] S11, When the working fluid containing metal fragments reaches a preset high value in the cooling tank assembly, the shut-off valve of the cooling tank assembly is opened, and the working fluid containing metal fragments flows into the primary separation assembly.

[0017] S12, large metal debris is left in the solid storage basket of the primary separation component, while small metal debris and working fluid flow to the secondary separation component through the primary separation outlet pipe assembly.

[0018] S13, when the liquid level of the cooling tank assembly reaches the preset low value, close the shut-off valve;

[0019] S14, the electric push rod of the chip suction assembly is started by the PLC control system to extend it. When the sensing plate is sensed by the first sensor, the electromagnetic strip is located directly above the solid storage basket. The operation of the electric push rod is stopped and the signal is fed back to the PLC control system to power the electromagnetic strip.

[0020] S15, metal scraps in the solid storage basket are attracted by an energized electromagnetic strip;

[0021] S16, after standing for a period of time, start the electric push rod to retract it, and the attracted metal debris moves together with the electromagnetic strip;

[0022] S17, when the sensing element is sensed by the second sensor, the electromagnetic strip is located above the box body, the operation of the electric push rod is stopped and the signal is fed back to the PLC control system to cut off the power to the electromagnetic strip;

[0023] S18, the electromagnetic strip loses its magnetism, and the metal debris below the electromagnetic strip falls into the placement box;

[0024] The working fluid recycling method S2 includes the following steps:

[0025] S21, based on the above S12, small metal debris is left in area A of the separation box, and liquid flows to area B, so that the liquid levels in area A and area B are equal.

[0026] S22, as the cutting work continues, the liquid levels in areas A and B of the separation box continue to rise. The separation box and the separation box support frame descend as a whole. The piston rod drives the piston to move downward. The gas in area E of the cylinder assembly is pressurized. After pressurization, the gas flows into the cooling tank assembly through the second exhaust pipe and the main exhaust pipe, reducing the temperature inside the cooling tank assembly and making it less likely for metal debris inside the cooling tank assembly to accumulate. At this time, the volume of area D of the cylinder assembly increases and the air pressure decreases, allowing outside air to enter area D of the cylinder assembly.

[0027] S23, as the liquid level continues to rise, the liquid in areas A and B of the separator will flow to area C. When the liquid level in area C of the separator is higher than the set value, the separator will deflect, causing the third spring to contact the inductive switch and feed back to the PLC control system.

[0028] S24, simultaneously open the first solenoid valve and the second solenoid valve. The working fluid that has been filtered again in the separation box flows into the temporary storage tank assembly through the separation box drain pipe collection assembly. After a preset time, close the first solenoid valve and the second solenoid valve. At this time, under the combined action of the first spring and the second spring, the separation box body deflects in the opposite direction and returns to the horizontal state. At the same time, under the action of the fourth spring, the piston rod drives the piston to move upward. The gas in the D region of the cylinder assembly is pressurized. After pressurization, the gas flows into the cooling tank assembly through the first exhaust pipe and the collection exhaust pipe. At this time, the volume of the E region of the cylinder assembly increases and the air pressure decreases. Outside air enters the E region of the cylinder assembly.

[0029] S25, when the liquid level in the temporary storage tank assembly reaches the preset liquid level, start the pump to pump the working fluid in the temporary storage tank assembly into the storage tank.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This invention provides a metal debris recovery device for CNC machine tool working fluid. Through the configuration of a cooling tank assembly, a primary separation assembly, a primary separation outlet pipe assembly, a magnetic debris placement box assembly, a debris suction assembly, a secondary separation assembly, a cylinder assembly, a temporary storage tank assembly, and a PLC control system, it can promptly transfer large metal debris to a designated location while simultaneously recovering and recycling the working fluid. This efficiently achieves the separation and recovery of metal debris from the working fluid, effectively improving the resource utilization efficiency of the entire processing procedure.

[0032] The present invention provides a metal scrap recovery device in CNC machine tool working fluid. By setting up an electromagnetic strip and an insulating plate, the safety during the power-on process is effectively guaranteed. By aligning only one end of the electromagnetic strip and the insulating plate, the sensing point of the electric push rod is always within the magnetic scrap placement box assembly when the electric push rod reverses direction, thereby ensuring the stability of the reversal.

[0033] The present invention provides a metal scrap recovery device in CNC machine tool working fluid. The center of gravity of the separation tank is set on the axis of the separation tank deflection shaft. Under the action of the elastic support component, when the liquid height in region C of the separation tank is lower than the set value, the separation tank remains in a horizontal state; when the liquid height in region C of the separation tank is higher than the set value, it will deflect, thereby timely discharging the working fluid that has been filtered again.

[0034] This invention provides a metal scrap recovery device for CNC machine tool working fluid. When the separation tank is kept horizontal, the inflow of working fluid containing small iron scrap particles increases the overall weight of the separation tank, causing the piston to move downward. After the working fluid in the separation tank is discharged, the separation tank will return to its original position under the combined action of the elastic support component and the fourth spring, causing the piston to move upward. During the movement of the piston, pressurized gas is generated in the exhaust pipe, thereby reducing the temperature inside the cooling tank assembly and making it less likely for metal scrap to accumulate inside the cooling tank assembly. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall invention;

[0036] Figure 2 This is a schematic diagram of the internal structure of the initial separation component of the present invention;

[0037] Figure 3This is a schematic diagram of the structure of the initial separation component, the magnetic debris placement box component, and the debris suction component of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the magnetic debris placement box assembly of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the dust collection component of the present invention;

[0040] Figure 6 This is a schematic diagram of the re-separation component of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the separation box body of the present invention;

[0042] Figure 8 This is the present invention. Figure 7 A schematic diagram of the rear structure;

[0043] Figure 9 This is a schematic diagram of the structure of the separation box support frame of the present invention;

[0044] Figure 10 This is a schematic diagram of the connection between the cylinder protection seat and the elastic support assembly of the present invention;

[0045] Figure 11 This is a schematic diagram of the cylinder assembly of the present invention;

[0046] Figure 12 This is a schematic diagram of the internal structure of the cylinder assembly of the present invention.

[0047] In the diagram: 100, wire cutting main body; 110, liquid storage tank; 120, metal workpiece to be processed; 200, cooling tank assembly; 201, shut-off valve; 300, primary separation assembly; 310, coarse separation cylinder; 311, first groove; 320, solid storage basket; 321, first through hole; 330, conversion cylinder; 400, primary separation outlet pipe assembly; 500, magnetic debris placement box assembly; 510, placement box body; 511, second groove; 520, first sensor assembly; 521, first sensor; 530, second sensor assembly; 531, second sensor; 540, pull-out baffle. 550. Electric push rod mounting plate; 551. Push rod support plate; 560. Push rod support frame assembly; 570. Push rod extension shaft guide plate; 600. Dust collection assembly; 610. Electric push rod; 620. Insulating plate; 621. Induction plate; 630. Locking screw assembly; 640. Electromagnetic strip; 700. Re-separation assembly; 710. Separation box body; 711. First filter screen; 712. Second filter screen; 713. First drain port; 714. Second drain port; 715. Sealing door; 716. Support shaft; 717. Induction cylinder; 7171. Third spring; 718. Separation box offset 720. Shaft; 721. Separator top cover; 730. Separator inlet; 740. Trigger assembly; 741. Inductive switch; 742. Separator support frame; 743. Guide frame; 744. Bearing seat; 745. Bearing; 746. First fixing clip; 747. Second fixing clip; 750. Separator drain pipe collection assembly; 751. First solenoid valve; 752. Second solenoid valve; 760. Cylinder protection seat; 761. Air pipe fixing hole; 770. First elastic support assembly; 771. First spring; 772. Connecting cylinder; 773. Fixing seat; 780. Second elastic support assembly; 781. 800. Second spring; 810. Cylinder assembly; 820. Cylinder housing; 830. Cylinder top plate; 841. Cylinder bottom plate; 842. First intake pipe; 843. First check valve; 844. Second intake pipe; 845. Second check valve; 851. First exhaust pipe; 852. Third check valve; 853. Second exhaust pipe; 854. Fourth check valve; 855. Central exhaust pipe; 856. Fifth check valve; 860. Piston; 870. Piston rod; 880. Piston rod connector; 890. Fourth spring; 900. Temporary storage tank assembly; 910. Temporary storage tank drain pipe; 911. Liquid pump. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" indicate orientation or positional relationships only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0050] It should be understood that, in the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” and “linking” should be interpreted broadly.

[0051] Example 1

[0052] See appendix Figure 1 To be continued Figure 12 This embodiment provides a metal scrap recovery device in CNC machine tool working fluid, including a wire cutting main body 100, a metal part to be processed 120, a cooling tank assembly 200, a primary separation assembly 300, a primary separation outlet pipe assembly 400, a magnetic scrap placement box assembly 500, a scrap suction assembly 600, a re-separation assembly 700, a cylinder assembly 800, a temporary storage tank assembly 900, and a PLC control system.

[0053] The top of the cooling tank assembly 200 is provided with a vent hole, and the discharge end of the cooling tank assembly 200 is provided with a shut-off valve 201. The metal part 120 to be processed is processed by the wire cutting body 100. The working fluid flows out from the liquid storage tank 110 of the wire cutting body 100 and is sprayed onto the surface of the metal part 120 to be processed. The working fluid and metal chips flow into the cooling tank assembly 200 together. The flow of the working fluid containing metal chips is realized by opening and closing the shut-off valve 201.

[0054] The primary separation component 300 is located at the rear end of the cooling tank assembly 200. The primary separation component 300 includes a coarse separation cylinder 310, a solid storage basket 320, and a conversion cylinder 330. The coarse separation cylinder 310 has a cuboid structure and is located at the top of the conversion cylinder 330 and fixedly connected to it. The conversion cylinder 330 has a square-to-round structure. A first groove 311 is provided inside the coarse separation cylinder 310. The solid storage basket 320 is engaged inside the coarse separation cylinder 310 through the first groove 311. A first through hole 321 is provided at the bottom and around the solid storage basket 320 to facilitate the timely discharge of the working fluid.

[0055] One end of the initial separation liquid outlet pipe assembly 400 is connected to the initial separation assembly 300, and the other end of the initial separation liquid outlet pipe assembly 400 is connected to the re-separation assembly 700. The main pipe of the initial separation liquid outlet pipe assembly 400 is a rubber hose.

[0056] The magnetic debris placement box assembly 500 is located on one side of the primary separation assembly 300, and the magnetic debris placement box assembly 500 and the primary separation assembly 300 are fixedly connected by a connector (the specific structure is not shown in the figure). The magnetic debris placement box assembly 500 includes a placement box body 510, a first sensor assembly 520, a second sensor assembly 530, a pull-out baffle 540, an electric push rod mounting plate 550, a push rod support frame assembly 560, a push rod extension shaft guide plate 570, and a placement box base. The placement box base is located at the bottom of the placement box body 510 and is fixedly connected to it, providing support for the magnetic debris placement box assembly 500. The first sensor assembly 520 and the second sensor assembly 530 are both located at the top of the placement box body 510 and are fixedly connected to it. On the front of the magnetic debris placement box assembly 500, a first sensor 521 is provided on the first sensor assembly 520, and a second sensor 531 is provided on the second sensor assembly 530. A second groove 511 is provided on the outer top of one side of the placement box body 510. A pull-out baffle 540 is engaged in the second groove 511, and the pull-out baffle 540 can be separated from the placement box body 510 through the second groove 511. An electric push rod mounting plate 550 is located on the other side of the placement box body 510 and is fixedly connected to it. The electric push rod mounting plate 550 has an L-shaped structure. A push rod support plate 551 is provided at the bottom of the electric push rod mounting plate 550. A push rod support frame assembly 560 is located on the top of the electric push rod mounting plate 550 and is fixedly connected to it. A push rod extension shaft guide plate 570 is located on the top of the other side of the placement box body 510 and is fixedly connected to it.

[0057] The chip collection assembly 600 is located on top of and connected to the magnetic chip placement box assembly 500. The chip collection assembly 600 includes an electric push rod 610, an insulating plate 620, a locking screw assembly 630, and an electromagnetic strip 640. The electric push rod 610 is fixedly connected to the electric push rod mounting plate 550. The outer shell of the electric push rod 610 is further fixed by the push rod support frame assembly 560. The extension shaft of the electric push rod 610 has an internal threaded hole in its axial direction. The locking screw assembly 630 locks the insulating plate 620 and the extension shaft of the electric push rod 610. The insulating plate 620 has a through hole. The electromagnetic strip 640 is located at the bottom of the insulating plate 620 and is fixedly connected to it. The electromagnetic strip 640 is combined with the control system to realize the energization and discharge, which is a mature existing technology and will not be described in detail here.

[0058] The insulating plate 620 includes a horizontal plate and a vertical plate. A sensing plate 621 is provided on the front of the vertical plate of the insulating plate 620 near the push rod extension shaft guide plate 570. A through hole is provided on the push rod extension shaft guide plate 570. The distance between the through hole of the push rod extension shaft guide plate 570 and the back of the placement box 510 is less than the distance between the through hole of the push rod extension shaft guide plate 570 and the front of the placement box 510. The insulating plate 620 and the electromagnetic strip 640 are flush with each other on the side away from the push rod extension shaft guide plate 570, ensuring that the sensing point is within the magnetic debris placement box assembly 500 when the electric push rod 610 reverses direction, thereby ensuring the stability of the reversal. When the chip suction assembly 600 moves, when the sensing plate 621 is detected by the first sensor 521, the action of the chip suction assembly 600 stops and the electromagnetic strip 640 is energized. Metal chips are adsorbed onto the lower surface of the electromagnetic strip 640. After standing for a period of time, the electric push rod 610 retracts. When the sensing plate 621 is detected by the second sensor 531, the action of the chip suction assembly 600 stops and the electromagnetic strip 640 is de-energized. The metal chips adsorbed on the electromagnetic strip 640 fall into the magnetic chip placement box assembly 500. That is to say, during the initial separation, large metal chips are left in the solid storage basket 320, while small metal chips and working fluid flow into the re-separation assembly 700 for further separation. The separated working fluid is returned to the storage tank 110 via the temporary storage tank assembly 900. The movement of the chip suction assembly 600 transfers the metal chips in the solid storage basket 320 to the magnetic chip placement box assembly 500.

[0059] The re-separation assembly 700 also includes a separation chamber body 710, a separation chamber top cover plate 720, a triggering assembly 730, a separation chamber support frame 740, a separation chamber drain pipe concentrator assembly 750, a first elastic support assembly 770, and a second elastic support assembly 780. The separation chamber top cover plate 720 is located on the top of the separation chamber body 710. The triggering assembly 730 is located on the side of the separation chamber body 710 away from the initial separation drain pipe assembly 400. There are two separation chamber support frames 740, which are connected to the separation chamber body 710. The separation chamber drain pipe concentrator assembly 750 is located at the bottom of the separation chamber body 710 and communicates with it. One end of the first elastic support assembly 770 is fixedly connected to the separation chamber body 710, and the other end is fixedly connected to the cylinder protection seat 760. One end of the second elastic support assembly 780 is fixedly connected to the separation chamber body 710, and the other end is fixedly connected to the cylinder protection seat 760.

[0060] The separation chamber 710 is equipped with a first filter plate 711 and a second filter plate 712, which divide the separation chamber 710 into three regions: A, B, and C. Both the first filter plate 711 and the second filter plate 712 have filter holes. The first filter plate 711 has a fully perforated structure, while the bottom of the second filter plate 712 is a solid plate. When working fluid flows into region A of the separation chamber 710, solid particles in the working fluid are isolated in region A, and the liquid is distributed between region A and region B. When the liquid in the area reaches a preset height, the working fluid will flow towards area C; a first drain port 713 is opened at the bottom of area B of the separation box 710, a second drain port 714 is opened at the bottom of area C of the separation box 710, a sealing door 715 is opened on the side of area A of the separation box 710 away from area B, a support shaft 716 is provided on both the front and back of the separation box 710, a sensing cylinder 717 is provided on the side of area C of the separation box 710 away from area B, a third spring 7171 is connected inside the sensing cylinder 717, and a separation box deflection shaft 71 is provided at the bottom of the separation box 710. 8. The center of gravity of the separator housing 710 is located on the axis of the separator deflection shaft 718. The separator top cover plate 720 is provided with a separator inlet 721, which is located at the top of area A of the separator housing 710. The trigger assembly 730 is fixed by a support structure (not shown in the figure). The trigger assembly 730 is provided with an inductive switch 731. The separator support frame 740 includes a guide frame 741, a bearing seat 742 fixedly connected to the guide frame 741, and a bearing 743 located inside the bearing seat 742. The outer periphery of the circular guide post at the bottom of the guide frame 741 is respectively provided with There are first fixing clips 744 and second fixing clips 745. The first fixing clips 744 and second fixing clips 745 are fastened by bolts and form guide holes. When the weight of the separation box body 710 changes, the separation box body 710 and the separation box support frame 740 can move downward as a whole along the guide holes formed by the first fixing clips 744 and second fixing clips 745. When the liquid level in region C of the separation box body 710 is lower than the set value, the separation box body 710 is in a horizontal state. When the liquid level in region C of the separation box body 710 is higher than the set value, the separation box body 710 deflects.The separator drain pipe assembly 750 is a three-way pipe, connected to the first drain port 713 and the second drain port 714. A first solenoid valve 751 and a second solenoid valve 752 are respectively installed on the separator drain pipe assembly 750. The first solenoid valve 751 is located below the first drain port 713, and the second solenoid valve 752 is located below the second drain port 714. The connecting pipes between the first drain port 713 and the first solenoid valve 751, and between the second drain port 714 and the second solenoid valve 752, are all flexible hoses. The cylinder protection seat 760 has several air pipe fixing holes 761. The first elastic support assembly 770 includes a first spring 771, a connecting cylinder 772, and a fixing seat 773. Both ends of the first spring 771 are connected to the connecting cylinder 772. The second elastic support assembly 780 contains a second spring 781.

[0061] The cylinder assembly 800 is located inside the cylinder protection seat 760 at the bottom of the re-separation assembly 700; the cylinder assembly 800 includes a cylinder housing 810, a cylinder top plate 820, a cylinder bottom plate 830, a piston 860, a piston rod 870, a piston rod connector 880, and a fourth spring 890. The cylinder top plate 820 is located on top of and fixedly connected to the cylinder housing 810, the cylinder bottom plate 830 is located on the bottom of and fixedly connected to the cylinder housing 810, and the piston 860 is located inside the cylinder protection seat 760 at the bottom of the cylinder housing 810. Inside the cylinder housing 810, the piston rod 870 is located on top of and fixedly connected to the piston 860. The piston rod 870 passes through the cylinder top plate 820. The piston rod 870 is connected to the separator box 710 via the piston rod connector 880. The fourth spring 890 is located between the piston 860 and the cylinder bottom plate 830. The fourth spring 890 is located inside the cylinder housing 810. The piston 860 divides the cylinder assembly 800 into two regions, D and E. The cylinder housing 810 is close to... A first intake pipe 841 and a second intake pipe 843 are provided on one side of region C of the separator housing 710. The first intake pipe 841 is connected to region D of the cylinder assembly 800 and is equipped with a first one-way valve 842. The second intake pipe 843 is connected to region E of the cylinder assembly 800 and is equipped with a second one-way valve 844. A first exhaust pipe is provided on the side of the cylinder housing 810 near region A of the separator housing 710. The first exhaust pipe 851 is connected to the D region of the cylinder assembly 800, and a third one-way valve 852 is provided on the first exhaust pipe 851. The second exhaust pipe 853 is connected to the E region of the cylinder assembly 800, and a fourth one-way valve 854 is provided on the second exhaust pipe 853. The gas in the first exhaust pipe 851 and the second exhaust pipe 853 both enter the combined exhaust pipe 855, and a fifth one-way valve 856 is provided on the combined exhaust pipe 855.

[0062] The temporary storage tank assembly 900 is located at the rear end of the re-separation assembly 700; the outlet end of the temporary storage tank assembly 900 is provided with a temporary storage tank drain pipe 910, and a liquid pump 911 is provided on the temporary storage tank drain pipe 910. The working fluid in the temporary storage tank assembly 900 can be discharged into the storage tank 110 by the liquid pump 911.

[0063] The present invention also provides a method for using a metal scrap recovery device in CNC machine tool working fluid, the method comprising a metal scrap recovery method S1 and a working fluid recycling method S2;

[0064] Wherein: Metal scrap recycling method S1 includes the following steps:

[0065] S11, when the working fluid containing metal fragments reaches a preset high value in the cooling tank assembly 200, the shut-off valve 201 of the cooling tank assembly 200 is opened, and the working fluid containing metal fragments flows into the primary separation assembly 300.

[0066] S12, large metal fragments are left in the solid storage basket 320 of the primary separation component 300, while small metal fragments and working fluid flow to the secondary separation component 700 through the primary separation outlet pipe assembly 400.

[0067] S13, when the liquid level of the cooling tank assembly 200 reaches the preset low value, close the shut-off valve 201;

[0068] S14, the electric push rod 610 of the chip suction assembly 600 is started by the PLC control system to extend it. When the sensing plate 621 is sensed by the first sensor 521, the electromagnetic strip 640 is located directly above the solid storage basket 320. The operation of the electric push rod 610 is stopped and the signal is fed back to the PLC control system to power the electromagnetic strip 640.

[0069] S15, the metal debris in the solid storage basket 320 is attracted by the energized electromagnetic strip 640;

[0070] S16. After standing still for a period of time, start the electric push rod 610 to retract it, and the metal debris that has been adsorbed moves together with the electromagnetic strip 640.

[0071] S17, when the sensing element 621 is sensed by the second sensor 531, the electromagnetic strip 640 is located above the placement box body 510, the operation of the electric push rod 610 is stopped and the signal is fed back to the PLC control system to cut off the power to the electromagnetic strip 640.

[0072] S18, the electromagnetic strip 640 loses its magnetism, and the metal debris below the electromagnetic strip 640 falls into the placement box 510.

[0073] The working fluid recycling method S2 includes the following steps:

[0074] S21, based on the above S12, small metal fragments are left in area A of the separation box 710, and the liquid flows to area B, so that the liquid levels in area A and area B are equal.

[0075] S22, as the cutting operation continues, the liquid levels in areas A and B of the separation box 710 continue to rise. The separation box 710 and the separation box support frame 740 descend as a whole. The piston rod 870 drives the piston 860 to move downward. The volume of area E of the cylinder assembly 800 decreases, the gas is pressurized, the fourth one-way valve 854 opens, and the pressurized gas flows into the cooling tank assembly 200 through the second exhaust pipe 853 and the general exhaust pipe 855, reducing the temperature inside the cooling tank assembly 200 and making it less likely for metal debris inside the cooling tank assembly 200 to form clumps. At this time, the volume of area D of the cylinder assembly 800 increases, the gas pressure is lower than atmospheric pressure, the first one-way valve 842 opens, and outside air enters area D of the cylinder assembly 800.

[0076] S23, as the liquid level continues to rise, the liquid in areas A and B of the separation tank 710 will flow to area C. When the liquid level in area C of the separation tank 710 is higher than the set value, the separation tank 710 deflects, causing the third spring 7171 to contact the inductive switch 731 and feed back to the PLC control system.

[0077] S24, simultaneously open the first solenoid valve 751 and the second solenoid valve 752. The working fluid that has been filtered again in the separation box 710 flows into the temporary storage tank assembly 900 through the separation box drain pipe collection assembly 750. After a preset time, close the first solenoid valve 751 and the second solenoid valve 752. At this time, under the combined action of the first spring 771 and the second spring 781, the separation box 710 deflects in the opposite direction and returns to a horizontal state. At the same time, under the action of the fourth spring 890, the piston rod 870 drives the piston 860 to move upward. The volume of the D region of the cylinder assembly 800 decreases, the gas is pressurized, the third one-way valve 852 opens, and the pressurized gas flows into the cooling tank assembly 200 through the first exhaust pipe 851 and the collection exhaust pipe 855. At this time, the volume of the E region of the cylinder assembly 800 increases, the gas pressure is lower than the gas pressure, the second one-way valve 844 opens, and outside air enters the E region of the cylinder assembly 800.

[0078] S25, when the liquid level in the temporary storage tank assembly 900 reaches the preset liquid level, the pump 911 is started to pump the working fluid in the temporary storage tank assembly 900 into the storage tank 110.

[0079] It should be noted that since there may be a small amount of small metal particles in area A of the separator 710, it needs to be cleaned regularly. Otherwise, the long-term presence of these particles will affect the operation of the cylinder assembly 800. In practice, an observation window can be set in the separator 710. When the metal particles accumulate to a certain amount, with the shut-off valve 201 closed and the working fluid in the separator 710 drained through the solenoid valve, the remaining metal particles in the separator 710 can be discharged by opening the sealing door 715.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for recovering metal scrap from the working fluid of a CNC machine tool, comprising a wire cutting body and a metal part to be processed, characterized in that, It also includes a cooling tank assembly, a primary separation assembly, a primary separation outlet pipe assembly, a magnetic debris placement box assembly, a debris suction assembly, a re-separation assembly, a cylinder assembly, a temporary storage tank assembly, and a PLC control system. The initial separation component is located at the rear end of the cooling tank assembly; One end of the initial separation liquid outlet tube assembly is connected to the initial separation assembly, and the other end of the initial separation liquid outlet tube assembly is connected to the re-separation assembly. The magnetic debris placement box assembly is located on one side of the initial separation assembly, and the debris suction assembly is located on top of and connected to the magnetic debris placement box assembly; The cylinder assembly is located inside the cylinder protection seat at the bottom of the reseparation assembly; The temporary storage bucket assembly is located at the rear end of the re-separation assembly; The wire cutting body processes the metal part to be processed. The working fluid flows out from the storage tank of the wire cutting body and is sprayed onto the surface of the metal part to be processed. The working fluid and metal chips flow together into the cooling tank assembly. Large metal chips are left in the solid storage basket of the primary separation assembly. Small metal chips and working fluid flow into the secondary separation assembly for further separation. The separated working fluid is returned to the storage tank through the temporary storage tank assembly. The metal chips in the solid storage basket are transferred to the magnetic chip placement box assembly by the movement of the chip suction assembly. The re-separation assembly further includes a separation chamber body, a separation chamber top cover plate, a triggering component, a separation chamber support frame, a separation chamber drain pipe concentrator assembly, a first elastic support assembly, and a second elastic support assembly. The separation chamber top cover plate is located at the top of the separation chamber body. The triggering component is located on the side of the separation chamber body away from the initial separation drain pipe assembly. The separation chamber support frame is connected to the separation chamber body. The separation chamber drain pipe concentrator assembly is located at the bottom of the separation chamber body and communicates with it. One end of the first elastic support assembly is fixedly connected to the separation chamber body, and the other end is fixedly connected to the cylinder protection seat. One end of the second elastic support assembly is fixedly connected to the separation chamber body, and the other end is fixedly connected to the cylinder protection seat. The separation chamber is equipped with a first filter plate and a second filter plate, which divide the separation chamber into three regions, A, B and C, in sequence. When working fluid flows into region A of the separation chamber, solid particles in the working fluid are isolated in region A, and the liquid will be distributed in regions A and B. When the liquid in regions A and B reaches a preset height, the working fluid will flow to region C. A first drain port is opened at the bottom of region B of the separation chamber, and a second drain port is opened at the bottom of region C of the separation chamber. A sealing door is opened on the side of region A away from region B of the separation chamber. Support shafts are provided on both the front and back of the separation chamber. A sensing cylinder is provided on the side of region C away from region B of the separation chamber. A third spring (1) is connected inside the sensing cylinder. A separation chamber deflection shaft is provided at the bottom of the separation chamber. A separation chamber inlet is provided on the top cover of the separation chamber. The separation chamber inlet is located at the top of region A of the separation chamber. The trigger component The separation box support frame includes a guide frame, a bearing seat fixedly connected to the guide frame, and a bearing located inside the bearing seat. A first fixing clip and a second fixing clip are respectively provided on the guide frame. The first fixing clip and the second fixing clip are fastened with bolts to form guide holes. The separation box drain pipe assembly is connected to the first drain port and the second drain port respectively. A first solenoid valve and a second solenoid valve are respectively provided on the separation box drain pipe assembly. The first solenoid valve is located below the first drain port, and the second solenoid valve is located below the second drain port. The connecting pipes between the first drain port and the first solenoid valve, and between the second drain port and the second solenoid valve, are all flexible hoses. The cylinder protection seat has several air pipe fixing holes. The first elastic support assembly includes a first spring, a connecting cylinder, and a fixing seat. Both ends of the first spring are connected to the connecting cylinder. The fixing seat is located at the bottom of the lower connecting cylinder. A second spring is provided inside the second elastic support assembly.

2. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 1, characterized in that, The cooling tank assembly has a vent hole at the top, a shut-off valve at the discharge end, a rubber hose as the main pipe of the initial separation liquid outlet pipe assembly, a temporary storage tank drain pipe at the outlet end of the temporary storage tank assembly, and a liquid pump on the temporary storage tank drain pipe.

3. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 2, characterized in that, The initial separation assembly further includes a coarse separation cylinder and a conversion cylinder. The coarse separation cylinder is located at the top of the conversion cylinder and is fixedly connected to it. A first groove is provided inside the coarse separation cylinder, through which the solid storage basket is engaged in the coarse separation cylinder. A first through hole is provided at the bottom and around the perimeter of the solid storage basket.

4. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 3, characterized in that, The magnetic debris placement box assembly includes a placement box body, a first sensor assembly, a second sensor assembly, a pull-out baffle, an electric push rod mounting plate, a push rod support frame assembly, a push rod extension shaft guide plate, and a placement box base. The placement box base is located at the bottom of the placement box body and is fixedly connected to it. The first sensor assembly and the second sensor assembly are both located at the top of the placement box body and are fixedly connected to it. The first sensor assembly is equipped with a first sensor, and the second sensor assembly is equipped with a second sensor. A second groove is formed on the outer top of one side of the placement box body, and the pull-out baffle is engaged in the second groove. The electric push rod mounting plate is located on the other side of the placement box body and is fixedly connected to it. A push rod support plate is provided at the bottom of the electric push rod mounting plate. The push rod support frame assembly is located at the top of the electric push rod mounting plate and is fixedly connected to it. The push rod extension shaft guide plate is located at the top of the other side of the placement box body and is fixedly connected to it.

5. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 4, characterized in that, The chip removal assembly includes an electric push rod, an insulating plate, a locking screw assembly, and an electromagnetic strip. The electric push rod is fixedly connected to the electric push rod mounting plate. The locking screw assembly locks the insulating plate and the extension shaft of the electric push rod. The insulating plate has a through hole, and the electromagnetic strip is located at the bottom of the insulating plate and fixedly connected to it.

6. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 5, characterized in that, The insulating plate includes a horizontal plate and a vertical plate. A sensing plate is provided on the front of the vertical plate of the insulating plate near the guide plate of the push rod extension shaft. A through hole is opened on the guide plate of the push rod extension shaft. The insulating plate and the electromagnetic strip are flush on the side away from the guide plate of the push rod extension shaft. When the chip collection assembly moves, when the sensing plate is sensed by the first sensor, the action of the chip collection assembly stops and the electromagnetic strip is energized. Metal chips are adsorbed on the lower surface of the electromagnetic strip. After standing for a period of time, the electric push rod is retracted. When the sensing plate is sensed by the second sensor, the action of the chip collection assembly stops and the electromagnetic strip is de-energized. The metal chips adsorbed on the electromagnetic strip fall into the magnetic chip placement box assembly.

7. The metal scrap recovery device in the working fluid of a CNC machine tool according to claim 6, characterized in that, The cylinder assembly includes a cylinder housing, a cylinder top plate, a cylinder bottom plate, a piston, a piston rod, a piston rod connector, and a fourth spring. The cylinder top plate is located at the top of the cylinder housing and is fixedly connected to it. The cylinder bottom plate is located at the bottom of the cylinder housing and is fixedly connected to it. The piston is located inside the cylinder housing. The piston rod is located at the top of the piston and is fixedly connected to it. The piston rod passes through the cylinder top plate and is connected to the separator housing via the piston rod connector. The fourth spring is located between the piston and the cylinder bottom plate, inside the cylinder housing. The piston divides the cylinder assembly into two regions, D and E. A portion of the cylinder housing is located near region C of the separator housing. The cylinder housing is provided with a first intake pipe and a second intake pipe. The first intake pipe is connected to region D of the cylinder assembly and is equipped with a first one-way valve. The second intake pipe is connected to region E of the cylinder assembly and is equipped with a second one-way valve. The cylinder housing is provided with a first exhaust pipe and a second exhaust pipe on the side near region A of the separator box. The first exhaust pipe is connected to region D of the cylinder assembly and is equipped with a third one-way valve. The second exhaust pipe is connected to region E of the cylinder assembly and is equipped with a fourth one-way valve. The gas in the first exhaust pipe and the second exhaust pipe both enter the combined exhaust pipe and is equipped with a fifth one-way valve.

8. The method of using the metal scrap recovery device in the working fluid of a CNC machine tool according to claim 7, characterized in that, The method of use includes metal scrap recovery method S1 and working fluid recycling method S2; Wherein: Metal scrap recycling method S1 includes the following steps: S11, When the working fluid containing metal fragments reaches a preset high value in the cooling tank assembly, the shut-off valve of the cooling tank assembly is opened, and the working fluid containing metal fragments flows into the primary separation assembly. S12, large metal debris is left in the solid storage basket of the primary separation component, while small metal debris and working fluid flow to the secondary separation component through the primary separation outlet pipe assembly. S13, when the liquid level of the cooling tank assembly reaches the preset low value, close the shut-off valve; S14, the electric push rod of the chip suction assembly is started by the PLC control system to extend it. When the sensing plate is sensed by the first sensor, the electromagnetic strip is located directly above the solid storage basket. The operation of the electric push rod is stopped and the signal is fed back to the PLC control system to power the electromagnetic strip. S15, metal scraps in the solid storage basket are attracted by an energized electromagnetic strip; S16, after standing for a period of time, start the electric push rod to retract it, and the attracted metal debris moves together with the electromagnetic strip; S17, when the sensing element is sensed by the second sensor, the electromagnetic strip is located above the box body, the operation of the electric push rod is stopped and the signal is fed back to the PLC control system to cut off the power to the electromagnetic strip; S18, the electromagnetic strip loses its magnetism, and the metal debris below the electromagnetic strip falls into the placement box; The working fluid recycling method S2 includes the following steps: S21, based on the above S12, small metal debris is left in area A of the separation box, and liquid flows to area B, so that the liquid levels in area A and area B are equal. S22, as the cutting work continues, the liquid levels in areas A and B of the separation box continue to rise. The separation box and the separation box support frame descend as a whole. The piston rod drives the piston to move downward. The gas in area E of the cylinder assembly is pressurized. After pressurization, the gas flows into the cooling tank assembly through the second exhaust pipe and the main exhaust pipe, reducing the temperature inside the cooling tank assembly and making it less likely for metal debris inside the cooling tank assembly to accumulate. At this time, the volume of area D of the cylinder assembly increases and the air pressure decreases, allowing outside air to enter area D of the cylinder assembly. S23, as the liquid level continues to rise, the liquid in areas A and B of the separator box will flow to area C. When the liquid level in area C of the separator box is higher than the set value, the separator box will deflect, causing the third spring (1) to contact the inductive switch and feed back to the PLC control system. S24, simultaneously open the first solenoid valve and the second solenoid valve. The working fluid that has been filtered again in the separation box flows into the temporary storage tank assembly through the separation box drain pipe collection assembly. After a preset time, close the first solenoid valve and the second solenoid valve. At this time, under the combined action of the first spring and the second spring, the separation box body deflects in the opposite direction and returns to the horizontal state. At the same time, under the action of the fourth spring, the piston rod drives the piston to move upward. The gas in the D region of the cylinder assembly is pressurized. After pressurization, the gas flows into the cooling tank assembly through the first exhaust pipe and the collection exhaust pipe. At this time, the volume of the E region of the cylinder assembly increases and the air pressure decreases. Outside air enters the E region of the cylinder assembly. S25, when the liquid level in the temporary storage tank assembly reaches the preset liquid level, start the pump to pump the working fluid in the temporary storage tank assembly into the storage tank.

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