A CNC machine tool coolant purification system and a high-precision CNC machine tool using the same

Abstract

The present invention relates to a coolant purification system for numerically controlled machine tools and a high-precision numerically controlled machine tool using the same, wherein the coolant purification system for numerically controlled machine tools comprises a water-oil separation device connected to a processing unit, and also comprises an adsorption mechanism, wherein the adsorption mechanism is arranged on a processing box and is used for performing a first iron chip removal on the coolant after being processed by the water-oil separation device; and a fine filtering mechanism, wherein the fine filtering mechanism is arranged on the processing box and is used for performing a second iron chip removal on the coolant in cooperation with the adsorption mechanism. The present invention realizes rapid filtering and anti-clogging functions by cooperating with the fine filtering mechanism through the adsorption mechanism, thereby solving the technical problems that the filtering accuracy requirement requires a long time, resulting in low efficiency and untimely supply of coolant, and the high filtering accuracy requirement also imposes a large pressure on the filtering equipment, resulting in frequent clogging.

Description

Technical Field

[0001] The invention relates to the technical field of coolant purification for numerically controlled machine tools, and in particular to a coolant purification system for numerically controlled machine tools and a high-precision numerically controlled machine tool using the same. Background Art

[0002] When industrial machine tools are processing products, a large amount of heat will be generated between the tool and the workpiece. The coolant can quickly absorb and take away the heat, keeping the temperature of the tool and the workpiece within a reasonable range. A large amount of chips will be generated during the cutting process. The coolant can dilute the chips and flush them away from the cutting area to prevent them from accumulating between the tool and the workpiece, affecting the processing accuracy and tool life. At the same time, in order to improve the recycling of resources, the cutting fluid will be collected and processed to remove grease, chips and dust, and then reused in cutting work.

[0003] During actual use, the inventors found that since the iron filings in the coolant vary in size, and even exist in the micron level, when it is necessary to completely remove and reuse these sized fragments, it takes a long time due to the requirements for filtration accuracy, resulting in inefficiency and untimely supply of coolant. At the same time, the higher filtration accuracy requirements also put greater pressure on the filtration equipment, and blockages are more frequent.

[0004] Especially for CNC equipment with high-precision processing, the iron content in the cutting fluid has a greater impact on the processing accuracy of parts, such as high-precision aerospace accessories processing. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and to provide a CNC machine tool coolant purification system and a high-precision CNC machine tool using the same. The system realizes rapid filtration and anti-clogging functions by cooperating with an adsorption mechanism and a fine filtration mechanism, thereby solving the technical problems that the filtration accuracy requirement requires a long time, resulting in low efficiency and untimely coolant supply, and the high filtration accuracy requirement also puts greater pressure on the filtration equipment, resulting in more frequent clogging.

[0006] To achieve the above object, the present invention provides the following technical solution: a CNC machine tool coolant purification system, comprising a water-oil separation device connected to a processing unit, and further comprising:

[0007] An adsorption mechanism, which is arranged on the processing box and is used to remove the first iron chips from the coolant after being processed by the water-oil separation device;

[0008] A fine filtering mechanism, which is arranged on the processing box and is used to cooperate with the adsorption mechanism to remove the second iron chips from the coolant;

[0009] The adsorption mechanism includes a magnetic suction component arranged on the processing box and used to adsorb iron filings by magnetic force, an alternating component arranged on the magnetic suction component and used to assist the magnetic suction component in preventing iron filings from being blocked, an interception component arranged on the magnetic suction component and used to cooperate with the alternating component for regional interception, a first collection component arranged on the magnetic suction component and used to return the iron filings above the magnetic suction component to the bottom for re-adsorption, and a second collection component arranged on the magnetic suction component and used to uniformly collect the iron filings below the magnetic suction component.

[0010] The magnetic attraction assembly includes an overflow box arranged on the processing box, a conveying channel with two ends respectively connected to the water-oil separation device and the overflow box, two sets of mounting frames connected to the overflow box, a magnetic plate embedded in the mounting frame, and a plurality of thin tubes connected to the magnetic plate and used for passing the coolant;

[0011] The alternating component includes a frame arranged on the mounting frame, an L-shaped frame connected to the mounting frame through a first rotating shaft, a driven gear connected to the first rotating shaft, a first motor connected to the processing box, a driving gear connected to the output end of the first motor and meshing with the driven gear for transmission, a plurality of swing plates connected to the L-shaped frame through a second rotating shaft, a first gear connected to the second rotating shaft, a plurality of groups of first racks connected to the overflow box and meshing with the first gear for transmission, and arc plates connected to both sides of the overflow box.

[0012] The intercepting assembly includes multiple groups of intercepting plates arranged on both sides of the capillary, a transmission gear connected to the mounting frame, two groups of transmission racks connected to the intercepting plates and meshing with the transmission gears for transmission, a triangular block connected to the mounting frame through a first telescopic member, an adjusting rack connected to the triangular block and meshing with multiple transmission gears for transmission, two groups of triggering rods passing through the mounting frame and mutually extruding the triangular blocks, and two groups of pressing rods connected to the L-shaped frame and used for extruding the triggering rods.

[0013] The first collecting assembly includes two groups of first screw rods passing through the overflow box and located above the magnetic plate, two groups of first push plates symmetrically arranged on the first screw rods, a second push plate connected to the first push plate through a second telescopic member, two groups of collecting bins connected to the mounting frame and provided with three-way grooves, a storage box connected to the overflow box and with an input end connected to the collecting bin on one side, and a collecting pipe connected to the collecting bin on the other side and with the other end connected to the storage box.

[0014] The second collecting assembly includes two groups of second screw rods passing through the overflow box and located below the magnetic plate, a third push plate connected to the second screw rod, a collecting trough opened on the overflow box, a flap passing through the overflow box and used to cover the collecting trough, a magnetic rod passing through the overflow box and one end of which is located in the collecting trough, a rotating rod connected to the overflow box, a first belt transmission member whose two ends are respectively connected to the output end of the first motor and the rotating rod, two groups of bevel gears respectively connected to the rotating rod and the first screw rod and meshing with each other for transmission, a second belt transmission member whose two ends are respectively connected to the two groups of first screw rods, and a third belt transmission member whose two ends are respectively connected to the first screw rod and the second screw rod.

[0015] The fine filtration mechanism includes a membrane filter assembly connected to the overflow box and used for secondary filtration of the coolant, a recoil assembly arranged on the membrane filter assembly and used to transfer the iron filings collected by the secondary filtration to the overflow box, and a vibration assembly connected to the membrane filter assembly and used to shake off the iron filings.

[0016] The membrane filter assembly comprises an L-shaped tube connected to the overflow box and used for receiving cooling liquid, a filter membrane connected to the L-shaped tube, and an a zone and a b zone arranged on both sides of the filter membrane.

[0017] The recoil assembly includes a baffle plate that runs through the L-shaped tube and is located in area a, a second motor connected to the processing box, a pump connected to the output end of the second motor through an electromagnetic clutch, a branch pipe whose two ends are respectively connected to the pump and the L-shaped tube and located between the filter membrane and the baffle plate, a three-way pipe that is respectively connected to the output end of the pump, the storage box outlet and the overflow box, a disturbance gear connected to the processing box through a third rotating shaft, a fourth belt transmission component whose two ends are respectively connected to the third rotating shaft and the output end of the second motor, a second disturbance rack connected to the L-shaped tube and one end of which is connected to the first disturbance rack, and a gear ring connected to the baffle plate and meshing with the second disturbance rack for transmission.

[0018] The vibration assembly comprises a spring connected to the first disturbance rack, a rubber ball connected to the spoiler, a vibration sheet connected to the spoiler and penetrating the rubber ball, and a lever connected to the first disturbance rack and used for moving the vibration sheet.

[0019] A high-precision CNC machine tool comprises the above-mentioned CNC machine tool coolant purification system.

[0020] The beneficial effects of the present invention are:

[0021] (1) The present invention provides a water-oil separation device, an adsorption mechanism and a fine filtration mechanism. First, the three-stage filtration ensures that the quality of the treated coolant fully meets the use requirements. Secondly, the three filtrations correspond to the coarse filtration of iron chips and water-oil separation, the adsorption and separation of iron chips and the fine filtration of micron-level debris, respectively. The filtration work is carried out in a targeted manner layer by layer, so that the filtration efficiency is improved.

[0022] (2) The present invention provides an alternating component in the adsorption mechanism, and divides the upper part of the overflow box in the magnetic suction component into channel A and channel B for alternate adsorption work, thereby solving the problem that some iron filings cannot be collected by the magnetic suction component because they are light in weight and float continuously with the upward overflow of coolant. At the same time, during the alternating switching process, the magnetic suction component channel A and channel B are also driven to alternately complete the reverse flushing of the capillary to prevent blockage.

[0023] (3) The present invention provides a first collecting component and a second collecting component in the adsorption mechanism. First, the first collecting component collects iron chips in the corresponding area on the top of the magnetic suction component during the opening of the deactivation channel, thereby ensuring that the collected iron chips can be promptly sent away from the coolant circulation position and returned to the bottom of the magnetic suction component for re-adsorption. At the same time, the second collecting component pushes the iron chips at the bottom of the magnetic suction component to collect the iron chips in a concentrated manner, thereby reducing the collection pressure at the magnetic suction position.

[0024] (4) The present invention provides a fine filtration mechanism to first filter the coolant with high precision to ensure the filtration quality. At the same time, during filtration, the recoil component and the vibration component are used to promptly shake off the iron filings attached to the filter membrane, and the coolant with a high iron filings content at the filter membrane position is re-transported to the magnetic suction component position for circulated adsorption, thereby improving the filtration efficiency.

[0025] In summary, the present invention has the advantages of high filtering efficiency, fine filtering accuracy and low clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the water-oil separation device of the present invention;

[0028] Figure 3 It is a top view schematic diagram of the adsorption mechanism of the present invention;

[0029] Figure 4 It is an overall schematic diagram of the adsorption mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the cooling water movement of the present invention;

[0031] Figure 6 This is a schematic diagram of the magnetic attraction component of the present invention;

[0032] Figure 7 It is a schematic diagram of the alternating components of the present invention;

[0033] Figure 8 This is a schematic diagram of the closure of channel A of the present invention;

[0034] Fig. 9It is a schematic diagram of the working state of the alternating component of the present invention;

[0035] Fig.10 This is a schematic diagram of the closure of the capillary tube of the present invention;

[0036] Fig.11 This is a schematic diagram of the position of the first cleaning component of the present invention;

[0037] Fig.12 This is a schematic diagram of the first cleaning component of the present invention;

[0038] Fig.13 This is a schematic diagram of the working state of the first cleaning component of the present invention;

[0039] Fig.14 It is a schematic diagram of the transmission part of the second cleaning component of the present invention;

[0040] Fig.15 is a schematic diagram of a second cleaning component of the present invention;

[0041] Fig.16 It is a schematic diagram of the fine filtering mechanism of the present invention;

[0042] Fig.17 It is a schematic diagram of the vibration assembly of the present invention;

[0043] Fig.18 It is a schematic diagram of the recycling component and the first cleaning component of the present invention for recycling the coolant. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] Embodiment 1

[0047] like Figures 1 to 11 As shown, this embodiment provides a CNC machine tool coolant purification system, including a water-oil separation device 100 connected to a processing unit, and also includes:

[0048] The adsorption mechanism 1 is arranged on the processing box 200 and is used to remove the first iron chips from the coolant after being processed by the water-oil separation device 100;

[0049] A fine filtering mechanism 2, which is disposed on the processing box 200 and is used to cooperate with the adsorption mechanism 1 to remove the second iron chips from the coolant;

[0050] The adsorption mechanism 1 includes a magnetic suction component 11 arranged on the processing box 200 and used to adsorb iron filings by magnetic force, an alternating component 12 arranged on the magnetic suction component 11 and used to assist the magnetic suction component 11 to prevent iron filings from being blocked, an interception component 13 arranged on the magnetic suction component 11 and used to cooperate with the alternating component 12 to perform regional interception, a first collection component 14 arranged on the magnetic suction component 11 and used to return the iron filings above the magnetic suction component 11 to the bottom for re-adsorption, and a second collection component 15 arranged on the magnetic suction component 11 and used to uniformly collect the iron filings below the magnetic suction component 11.

[0051] In this embodiment, by setting up a water-oil separation device 100, an adsorption mechanism 1 and a fine filtration mechanism 2, firstly, the three-stage filtration makes the quality of the coolant after treatment fully meet the use requirements, and then the three filtrations correspond to the coarse filtration of iron chips and water-oil separation, the adsorption and separation of iron chips and the fine filtration of micron-level debris, respectively. The filtration work is carried out in a targeted manner layer by layer, so that the filtration efficiency is improved.

[0052] In detail, first, the coolant on the CNC machine tool and the grease on the equipment flow downward to the water-oil separation device 100, wherein the water-oil separation device 100 is divided into two parts, one of which is located on both sides of the CNC machine tool, mainly to collect the coolant and grease uniformly, and preliminarily filter the chips, and then after the water and oil are separated in the mixed liquid, the coolant is pumped out from the bottom of the mixed liquid by a water pump, and the second is a separation box located in the middle position of the CNC machine tool, which is used to collect the lubricating oil gradually flowing out from the bottom slide rail of the CNC machine tool, and part of the coolant also falls from this position, and then the coolant drives the lubricating oil to flow into the separation box together, and a separation plate with an opening at the bottom is provided in the separation box, so that the coolant flows from the opening position to the other side of the separation plate, and then is collected uniformly with other coolants under the drive of the water pump, and the lubricating oil is located above the coolant due to its low density and incompatible characteristics, and overflows and is collected from the notch on the other side as the liquid level rises;

[0053] The coolant after preliminary filtration is transported to the adsorption mechanism 1 position in the processing box 200, where the first magnetic removal of iron chips is completed, and then the iron chips contained in the coolant are completely removed by membrane filtration at the fine filtration mechanism 2 position, and then returned to the CNC machine tool processing position.

[0054] Further, if Figures 3 to 6 and Fig.11 As shown, the magnetic attraction component 11 includes an overflow box 111 arranged on the processing box 200, a conveying channel 112 whose two ends are respectively connected to the water-oil separation device 100 and the overflow box 111, two sets of mounting frames 113 connected to the overflow box 111, a magnetic plate 114 embedded in the mounting frame 113, and a plurality of thin tubes 115 connected to the magnetic plate 114 and used to pass the coolant.

[0055] In this embodiment, an overflow box 111 with an opening on one side of the bottom is provided in conjunction with the magnetic plate 114 for blocking, so that the coolant drives the iron filings to move in a ring shape in the lower part of the overflow box 111, and gradually adsorbs and combines with the magnetic plate 114, effectively preventing the iron filings with heavy weight from being deposited at the bottom. In addition, some of the iron filings that pass through the capillary 115 are in the upper part of the overflow box 111. Since the water flow velocity in the upper part of the overflow box 111 is reduced, the iron filings can fall by their own weight and come into contact with the magnetic plate 114 again for adsorption and collection.

[0056] In detail, the coolant first passes through the water-oil separation device 100 and enters from the bottom of the overflow box 111 through the conveying channel 112. At this time, the coolant drives the iron filings to move at the bottom of the magnetic plate 114 and causes the iron filings to be adsorbed and collected by the magnetic plate 114. In the process, some iron filings follow the coolant through the capillary 115 to the top of the magnetic plate 114. At this time, due to the reduced flow rate, some iron filings with larger weight will not flow out of the overflow box 111 with the coolant, and at the same time, extremely small iron filings flow to the position of the fine filtration mechanism 2 together with the coolant.

[0057] Further, if Figures 3 to 9 As shown, the alternating component 12 includes a frame 121 arranged on the mounting frame 113, an L-shaped frame 123 connected to the mounting frame 113 through a first rotating shaft 122, a driven gear 124 connected to the first rotating shaft 122, a first motor 125 connected to the processing box 200, a driving gear 126 connected to the output end of the first motor 125 and meshing with the driven gear 124, a plurality of swing plates 128 connected to the L-shaped frame 123 through a second rotating shaft 127, a first gear 129 connected to the second rotating shaft 127, a plurality of groups of first racks 1210 connected to the overflow box 111 and meshing with the first gear 129, and an arc plate 1211 connected to both sides of the overflow box 111.

[0058] In this embodiment, by setting an alternating component 12 in the adsorption mechanism 1, the upper part of the overflow box 111 in the magnetic suction component 11 is divided into channel A and channel B for alternating adsorption work, thereby solving the problem that some iron filings cannot be collected by the magnetic suction component 11 because of their light weight and continuous floating with the upward overflow of coolant. At the same time, during the alternating switching process, the A channel and the B channel of the magnetic suction component 11 are also driven to alternately complete the back flushing of the capillary 115 to prevent blockage.

[0059] In detail, due to the cooperation between the frame 121 and the L-shaped frame 123, the upper part of the magnetic plate 114 is divided into channel A and channel B. For example, the first motor 125 drives the L-shaped frame 123 to rotate clockwise through the driven gear 124, the driving gear 126 and the first rotating shaft 122. At this time, due to the action of the intercepting assembly 13, the channel A on the left is opened and the channel B on the right is closed. During the process, the first gear 129 on the second rotating shaft 127 is meshed with the first rack 1210 on the overflow box 111 for transmission, thereby driving the swing plate 128 at the position of the channel B to rotate 90° to an open state. On the contrary, the swing plate 128 on the side of the channel A is closed, and the frame 121 is cooperated to close the channel A and the channel B. The two channels A and B are separated, and in addition, when the L-shaped plate moves, it cooperates with the arc plate 1211 to form some free space on both sides, thereby driving the coolant to recoil through the capillary 115 to prevent the capillary 115 from being blocked; when channel A is opened, the coolant below reaches the top through the capillary 115, and at this time, a part of the iron filings that are not adsorbed by the magnetic plate 114 also reaches the top, and the iron filings float upward under the action of the water flow. As the height increases, the force of the water flow can no longer support the iron filings to move upward, but they move from channel A to channel B in constant movement. Since the capillary 115 in channel B is closed and the swing plate 128 is opened, the iron filings fall on the top of the magnetic plate 114 by their own weight and are collected.

[0060] It should be noted that when the L-shaped plate moves, it cooperates with the arc-shaped plate 1211 to form some empty space on both sides. The empty space on both sides is mainly to reduce the working pressure of the coolant passing through the capillary 115 to achieve a recoil effect, and secondly, the coolant flows upward from both sides, thereby driving the iron filings that may be deposited at the edge of the mounting frame 113 to move again.

[0061] Further, if Figures 3 to 10 As shown, the intercepting assembly 13 includes a plurality of intercepting plates 131 arranged on both sides of the capillary 115, a transmission gear 132 connected to the mounting frame 113, two groups of transmission racks 133 connected to the intercepting plates 131 and meshing with the transmission gear 132 for transmission, a triangular block 135 connected to the mounting frame 113 through a first telescopic member 134, an adjusting rack 136 connected to the triangular block 135 and meshing with the plurality of transmission gears 132 for transmission, two groups of trigger rods 137 penetrating the mounting frame 113 and mutually extruding the triangular block 135, and two groups of pressing rods 138 connected to the L-shaped frame 123 and used for pressing the trigger rods 137.

[0062] In this embodiment, the intercepting component 13 is provided in cooperation with the alternating component 12 to realize the alternating opening and closing of channel A and channel B, so that the iron filings located on the upper part of the overflow box 111 can have a certain area to fall down by relying on their own weight, thereby preventing the iron filings from being suspended on the upper part of the overflow box 111.

[0063] In detail, when the L-shaped plate rotates, the pressure rod 138 connected to one end thereof squeezes the trigger rod 137 to move it downward, and then the trigger rod 137 squeezes the triangular block 135 to move to one side. When the triangular block 135 moves, it drives multiple adjustment racks 136 to engage with the transmission gear 132 for transmission, and the transmission gear 132 then drives the transmission racks 133 on both sides to move. Finally, driven by the transmission rack 133, the shut-off plates 131 located on both sides of the capillary 115 approach each other, so that the capillary 115 is squeezed and closed. On the contrary, when the L-shaped plate is moved away, the shut-off assembly 13 begins to reset under the action of the first telescopic member 134, and the capillary 115 reopens.

[0064] Further, if Figures 11 to 14 As shown, the first collecting assembly 14 includes two groups of first screw rods 141 that pass through the overflow box 111 and are located above the magnetic plate 114, two groups of first push plates 142 that are centrally symmetrically arranged on the first screw rods 141, a second push plate 144 that is connected to the first push plate 142 through a second telescopic member 143, two groups of collecting bins 146 that are connected to the mounting frame 113 and have three-way grooves 145, a storage box 147 that is connected to the overflow box 111 and whose input end is connected to the collecting bin 146 on one side, and a collecting pipe 148 that is connected to the collecting bin 146 on the other side and whose other end is connected to the storage box 147.

[0065] In this embodiment, by setting the first collecting component 14 in the adsorption mechanism 1, the first collecting component 14 collects iron filings in the corresponding area on the top of the magnetic suction component 11 when the deactivation channel is opened, thereby ensuring that the collected iron filings can be sent away from the coolant circulation position in time and returned to the bottom of the magnetic suction component 11 for re-adsorption.

[0066] In detail, when the first motor 125 drives the L-shaped frame 123 to flip, it also drives the two groups of first screw rods 141 to rotate, and the first screw rods 141 drive the two groups of first push plates 142 to move, one group is for resetting, and the other group is for pushing and cleaning. Taking the group for pushing and cleaning as an example, the first push plate 142 drives the second push plate 144 to move through the second telescopic member 143, and the second push plate 144 pushes and collects the iron filings on the top of the magnetic plate 114. After reaching the position of the collecting bin 146, the second push plate 144 is aligned with the middle position of the three-way groove 145 and is fixed in its position by the edge of the collecting bin 146. Then the first push plate 142 squeezes the coolant on one side of the second push plate 144 through the three-way groove 145, and then impacts downward from the top of the second push plate 144, thereby driving the collected iron filings to circulate and be collected to the external storage box 147 as fully as possible, and the coolant discharged from the collecting bin 146 on the other side is transmitted to the storage box 147 for collection through the collecting pipe 148.

[0067] It should be noted that the bottom of the second push plate 144 is arranged in an arc shape, which is conducive to scraping off the iron filings on the magnetic plate 114 and is conducive to impact transportation; a one-way valve is arranged at one end of the collecting bin 146, which only allows output but not input, and a partition is arranged at the top of the three-way groove 145, which only allows input but not output, to assist the first push plate 142 in guiding the coolant to flow to the position of the first push plate 142.

[0068] Further, if Figures 11 to 15 As shown, the second collecting assembly 15 includes two groups of second screw rods 151 penetrating the overflow box 111 and located below the magnetic plate 114, a third push plate 152 connected to the second screw rod 151, a collecting groove 153 opened on the overflow box 111, a flap 154 ​​penetrating the overflow box 111 and used to cover the collecting groove 153, a magnetic rod 155 penetrating the overflow box 111 and one end of which is located in the collecting groove 153, a rotating rod 156 connected to the overflow box 111, a first belt transmission member 157 whose two ends are respectively connected to the output end of the first motor 125 and the rotating rod 156, two groups of bevel gears 158 respectively connected to the rotating rod 156 and the first screw rod 141 and meshing with each other for transmission, a second belt transmission member 159 whose two ends are respectively connected to the two groups of first screw rods 141, and a third belt transmission member 1510 whose two ends are respectively connected to the first screw rod 141 and the second screw rod 151.

[0069] In this embodiment, by setting the second collecting component 15 in the adsorption mechanism 1, the second collecting component 15 pushes the iron filings at the bottom of the magnetic suction component 11, collects the iron filings in a centralized manner, reduces the collection pressure at the magnetic suction position, and improves the collection efficiency.

[0070] In detail, when the first motor 125 is working, it drives the rotating rod 156 to rotate through the first belt transmission member 157, and the rotating rod 156 drives the first screw rod 141 to rotate through the bevel gear 158. The two groups of first screw rods 141 are linked through the second belt transmission member 159. At the same time, the first screw rod 141 drives the second screw rod 151 to rotate through the third belt transmission member 1510. The second screw rod 151 then drives the third push plate 152 to move and push the iron filings collected at the bottom of the magnetic plate 114 into the collecting groove 153. When the iron filings reach the collecting groove 153, they are separated from the magnetic plate 114 at this point, and then the iron filings are adsorbed by the magnetic rod 155 in the collecting groove 153.

[0071] It should be noted that when the flap 154 ​​rotates, the collecting slot 153 is closed, and the magnetic rod 155 can be pulled out to clean the iron filings and then inserted again for reuse.

[0072] Further, if Figure 3 to Figure 4 and Figures 16 to 18As shown, the fine filtration mechanism 2 includes a membrane filter assembly 21 connected to the overflow box 111 and used for secondary filtration of the coolant, a recoil assembly 22 arranged on the membrane filter assembly 21 and used to return the iron filings collected by the secondary filtration to the overflow box 111, and a vibration assembly 23 connected to the membrane filter assembly 21 and used to shake off the iron filings.

[0073] In this embodiment, by setting up a fine filtration mechanism 2, the coolant is first filtered with high precision to ensure the filtration quality. At the same time, during filtration, the recoil component 22 and the vibration component 23 are cooperated to timely shake off the iron filings attached to the filter membrane 212, and the coolant with a high iron filings content at the position of the filter membrane 212 is re-transported to the position of the magnetic suction component 11 for circulated adsorption, thereby improving the filtration efficiency.

[0074] In detail, the coolant passing through the adsorption mechanism 1 still contains fine iron filings, and then the residual iron filings are completely separated through the membrane filter component 21 at the position of the fine filtration mechanism 2. At the same time, in order to ensure the filtration efficiency of the membrane filter component 21, the iron filings are discharged and reused in time to the bottom of the overflow box 111 through the recoil component 22 and the vibration component 23.

[0075] Further, if Figures 16 to 18 As shown, the membrane filter assembly 21 includes an L-shaped tube 211 connected to the overflow box 111 and used to receive the coolant, a filter membrane 212 connected to the L-shaped tube 211 , and an a zone 213 and a b zone 214 arranged on both sides of the filter membrane 212 .

[0076] It is worth mentioning that by providing the filter membrane 212, even extremely small iron filings in the coolant can be fully removed, thereby ensuring the quality of the coolant and preventing the fine iron filings from having a negative impact during workpiece processing.

[0077] In detail, after the coolant in the overflow box 111 flows to the L-shaped tube 211, it flows from the a zone 213 to the b zone 214 through the filter membrane 212 to complete the filtration. A booster device can be provided in the L-shaped tube 211 to improve the flow efficiency.

[0078] Further, if Figures 16 to 18As shown, the backwash assembly 22 includes a baffle 221 that penetrates the L-shaped tube 211 and is located in the a zone 213, a second motor 222 connected to the processing box 200, a pump 224 connected to the output end of the second motor 222 through an electromagnetic clutch 223, a branch pipe 225 whose two ends are respectively connected to the pump 224 and the L-shaped tube 211 and is located between the filter membrane 212 and the baffle 221, and a branch pipe 225 that is respectively connected to the output end of the pump 224 and the outlet of the storage box 147 As well as the three-way pipe 226 of the overflow box 111, the disturbance gear 228 connected to the processing box 200 through the third rotating shaft 227, the fourth belt transmission member 229 whose two ends are respectively connected to the third rotating shaft 227 and the output end of the second motor 222, the second disturbance rack 2211 connected to the L-shaped tube 211 and one end of which is connected to the first disturbance rack 2210, and the gear ring 2212 connected to the spoiler 221 and meshing with the second disturbance rack 2211 for transmission.

[0079] In this embodiment, the backflush component 22 is provided to timely discharge the coolant in the a zone 213 near the filter membrane 212, so that the coolant containing a high concentration of iron filings returns to the adsorption mechanism 1 for re-adsorption, thereby reducing the filtration pressure of the fine filtration mechanism 2.

[0080] In detail, when the second motor 222 rotates forward and drives the turbine blades in the pump 224 to rotate through the electromagnetic clutch 223, the third rotating shaft 227 is driven to rotate at the same time under the action of the fourth belt transmission member 229. The third rotating shaft 227 drives the second disturbance rack 2211 and the first disturbance rack 2210 to move quickly through the disturbance gear 228. At this time, the first disturbance rack 2210 drives the baffle 221 to rotate 90° through the gear ring 2212, so that the a zone 213 is closed, and then the first disturbance rack 2210 is separated from the gear ring 2212. Under the action of the pump 224, the coolant between the baffle 221 and the filter membrane 212 is transported and discharged. At the same time, under the action of negative pressure, the clean coolant in the b zone 214 circulates in the direction of the filter membrane 212 to backwash the filter membrane 212.

[0081] It should be noted that a damper is provided at the rotation position of the baffle plate 221 to fix its own position state; when the coolant flows to the overflow tank 111 through the branch pipe 225 and the three-way pipe 226, since one end of the three-way pipe 226 is connected to the storage tank 147, the two parts of the coolant are concentrated and enter the bottom of the overflow tank 111 under the drive of pressure; the branch pipe 225, the three-way pipe 226 and the top of the storage tank 147 are all provided with a one-way valve.

[0082] Embodiment 2

[0083] like Figures 16 to 18, wherein the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment, and for the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0084] like Figures 16 to 18 As shown, the vibration assembly 23 includes a spring 231 connected to the first disturbance rack 2210, a rubber ball 232 connected to the spoiler 221, a vibration plate 233 connected to the spoiler 221 and passing through the rubber ball 232, and a lever 234 connected to the first disturbance rack 2210 and used to move the vibration plate 233.

[0085] In this embodiment, by providing a vibration component 23, the filter membrane 212 is driven to vibrate with a small amplitude and high frequency during the recoil process, thereby improving the efficiency of iron filings falling off the filter membrane 212 and reducing the recoil time.

[0086] In detail, when the first disturbance rack 2210 is separated from the gear ring 2212 under the action of the disturbance gear 228, the second disturbance rack 2211 is still engaged with the disturbance gear 228. Due to the action of the spring 231, every time the second disturbance rack 2211 is separated from the disturbance gear 228, it will be rebounded and engaged again, thereby causing the second disturbance rack 2211 to continue to move back and forth, while driving the lever 234 to continuously move one end of the vibration plate 233. When the vibration plate 233 itself vibrates, the filter membrane 212 is driven to vibrate through the other end.

[0087] It should be noted that a rubber pad is provided at one end of the vibration plate 233 and gently strokes the filter membrane 212 to reduce damage to the filter membrane 212. The rubber ball 232 has two functions: one is to isolate the coolant, and the other is to prevent the vibration of the vibration plate 233 from being seriously attenuated.

[0088] Embodiment 3

[0089] A high-precision CNC machine tool includes embodiment 1 or a CNC machine tool coolant purification system described in the embodiment.

[0090] It should be noted that when the workpiece is fixed and cut on a high-precision CNC machine tool, a large amount of chips fall to the bottom of the machine tool and finally flow into the water-oil separation device 100 along with the cutting fluid, and then the iron chips are coarsely filtered and the water-oil separation is completed in the water-oil separation device 100.

[0091] Working steps:

[0092] First, the coolant on the CNC machine tool and the grease on the equipment flow downward to the water-oil separation device 100, where the water and oil are separated and the iron chips are roughly filtered. Then the coolant is pumped to the adsorption mechanism 1, and the coolant enters from the bottom of the overflow box 111. With the blocking of the magnetic plate 114, the coolant drives the iron chips to move in a ring shape at the bottom of the overflow box 111, and gradually adsorbs and combines with the magnetic plate 114. The alternating component 12 cooperates with the intercepting component 13 to make the L-shaped plate alternately open the A channel and the B channel. After the coolant reaches the top of the magnetic plate 114 through the capillary 115, , the iron filings float upward under the action of the water flow. As the height increases, the force of the water flow can no longer support the iron filings to move upward, but they move from channel A to channel B in constant motion. Since the capillary 115 in channel B is closed and the swing plate 128 is opened, the iron filings fall on the top of the magnetic plate 114 by their own weight and are collected. In the alternating process, the first collecting component 14 and the second collecting component 15 collect the iron filings on the top and bottom of the magnetic plate 114 respectively, wherein the first collecting component 14 returns the collected iron filings to the bottom of the magnetic plate 114, performs adsorption again, and collects them uniformly;

[0093] The coolant that has passed through the adsorption mechanism 1 still contains fine iron filings. The coolant then reaches the fine filtration mechanism 2 and completes the filtration work under the filtration of the filter membrane 212. At the same time, in order to ensure the filtration efficiency of the membrane filter component 21, the iron filings on the filter membrane 212 are promptly discharged and returned to the bottom of the overflow box 111 through the backwash component 22 and the vibration component 23 for adsorption again.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling liquid purification system for a numerically controlled machine tool, comprising a water-oil separation device (100) connected to a processing unit, characterized in that: Also includes: An adsorption mechanism (1), the adsorption mechanism (1) being arranged on the processing box (200) and used for performing a first iron chip removal on the coolant after being processed by the water-oil separation device (100); A fine filtering mechanism (2), the fine filtering mechanism (2) being arranged on the processing box (200) and being used to cooperate with the adsorption mechanism (1) to perform a second iron chip removal of the coolant; The adsorption mechanism (1) comprises a magnetic attraction component (11) arranged on the processing box (200) and used to adsorb iron filings by magnetic force, an alternating component (12) arranged on the magnetic attraction component (11) and used to assist the magnetic attraction component (11) in preventing iron filings from being blocked, an interception component (13) arranged on the magnetic attraction component (11) and used to cooperate with the alternating component (12) to perform regional interception, a first collection component (14) arranged on the magnetic attraction component (11) and used to return iron filings above the magnetic attraction component (11) to the bottom for re-adsorption, and a second collection component (15) arranged on the magnetic attraction component (11) and used to uniformly collect iron filings below the magnetic attraction component (11); The magnetic attraction assembly (11) comprises an overflow box (111) arranged on the processing box (200), a conveying channel (112) with two ends respectively connected to the water-oil separation device (100) and the overflow box (111), two sets of mounting frames (113) connected to the overflow box (111), a magnetic plate (114) embedded in the mounting frame (113), and a plurality of thin tubes (115) connected to the magnetic plate (114) and used for passing cooling liquid; The alternating assembly (12) comprises a frame (121) arranged on a mounting frame (113), an L-shaped frame (123) connected to the mounting frame (113) via a first rotating shaft (122), a driven gear (124) connected to the first rotating shaft (122), a first motor (125) connected to the processing box (200), a driving gear (126) connected to the output end of the first motor (125) and meshing with the driven gear (124), a plurality of swing plates (128) connected to the L-shaped frame (123) via a second rotating shaft (127), a first gear (129) connected to the second rotating shaft (127), a plurality of first racks (1210) connected to the overflow box (111) and meshing with the first gear (129), and arc-shaped plates (1211) connected to both sides of the overflow box (111); The intercepting assembly (13) comprises a plurality of intercepting plates (131) arranged on both sides of the capillary tube (115), a transmission gear (132) connected to the mounting frame (113), two transmission racks (133) connected to the intercepting plates (131) and meshing with the transmission gear (132) for transmission, a triangular block (135) connected to the mounting frame (113) via a first telescopic member (134), an adjusting rack (136) connected to the triangular block (135) and meshing with the plurality of transmission gears (132) for transmission, two sets of triggering rods (137) penetrating the mounting frame (113) and mutually pressing the triangular block (135), and two sets of pressing rods (138) connected to the L-shaped frame (123) and used for pressing the triggering rods (137); The first collecting assembly (14) comprises two groups of first screw rods (141) penetrating the overflow box (111) and located above the magnetic plate (114), two groups of first push plates (142) centrally symmetrically arranged on the first screw rods (141), a second push plate (144) connected to the first push plate (142) via a second telescopic member (143), two groups of collecting bins (146) connected to the mounting frame (113) and provided with three-way grooves (145), a storage box (147) connected to the overflow box (111) and having an input end connected to the collecting bin (146) on one side, and a collecting pipe (148) connected to the collecting bin (146) on the other side and having the other end connected to the storage box (147); The second collecting assembly (15) comprises two sets of second screw rods (151) penetrating the overflow box (111) and located below the magnetic plate (114), a third push plate (152) connected to the second screw rod (151), a collecting groove (153) opened on the overflow box (111), a flap (154) penetrating the overflow box (111) and used to cover the collecting groove (153), a magnetic rod (155) penetrating the overflow box (111) and having one end located in the collecting groove (153), and a third push plate (152) connected to the second screw rod (151). 11), a first belt transmission member (157) whose two ends are respectively connected to the output end of the first motor (125) and the rotating rod (156), two groups of bevel gears (158) respectively connected to the rotating rod (156) and the first screw rod (141) and meshing with each other for transmission, a second belt transmission member (159) whose two ends are respectively connected to the two groups of first screw rods (141), and a third belt transmission member (1510) whose two ends are respectively connected to the first screw rod (141) and the second screw rod (151).

2. A CNC machine tool coolant purification system according to claim 1, characterized in that: The fine filtering mechanism (2) comprises a membrane filter assembly (21) connected to the overflow box (111) and used for secondary filtering of the coolant, a backwash assembly (22) arranged on the membrane filter assembly (21) and used for returning iron filings collected by the secondary filtering to the overflow box (111), and a vibration assembly (23) connected to the membrane filter assembly (21) and used for shaking off the iron filings.

3. A CNC machine tool coolant purification system according to claim 2, characterized in that: The membrane filter assembly (21) comprises an L-shaped tube (211) connected to the overflow box (111) and used to receive cooling liquid, a filter membrane (212) connected to the L-shaped tube (211), and a zone a (213) and a zone b (214) arranged on both sides of the filter membrane (212).

4. A CNC machine tool coolant purification system according to claim 3, characterized in that: The backwash assembly (22) comprises a baffle (221) penetrating the L-shaped tube (211) and located in the a zone (213), a second motor (222) connected to the processing box (200), a pump (224) connected to the output end of the second motor (222) via an electromagnetic clutch (223), a branch pipe (225) respectively connected to the pump (224) and the L-shaped tube (211) at both ends and located between the filter membrane (212) and the baffle (221), and a branch pipe (225) respectively connected to the output end of the pump (224) and the output end of the storage box (147). a third rotating shaft (227) connected to the processing box (200); a fourth belt transmission member (229) having two ends respectively connected to the third rotating shaft (227) and the output end of the second motor (222); a second disturbance rack (2211) connected to the L-shaped tube (211) and having one end connected to the first disturbance rack (2210); and a gear ring (2212) connected to the baffle plate (221) and meshing with the second disturbance rack (2211) for transmission.

5. A CNC machine tool coolant purification system according to claim 4, characterized in that: The vibration assembly (23) comprises a spring (231) connected to a first disturbance rack (2210), a rubber ball (232) connected to a spoiler (221), a vibration sheet (233) connected to the spoiler (221) and penetrating the rubber ball (232), and a lever (234) connected to the first disturbance rack (2210) and used to move the vibration sheet (233).

6. A high-precision CNC machine tool, characterized in that: It comprises a CNC machine tool coolant purification system as described in any one of claims 1-5.

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