Lubricating oil purification and recycling system and process for numerically controlled machine tools

Abstract

The application discloses a lubricating oil purification and recycling system for numerical control machine tools and a process, and relates to the technical field of lubricating oil purification. The system comprises a filter shell, which is provided with a mounting mechanism for the lubricating oil purification and recycling of numerical control machine tools. The mounting mechanism comprises a pretreatment assembly. The mounting bracket of the application cooperates with the heating pipes. The uniform distribution of the heating pipes can make the lubricating oil evenly heated, efficiently evaporate the water in the lubricating oil, avoid the mixing of water into the lubricating oil to cause the emulsification of the lubricating oil and the decline of lubricating performance, prevent the corrosion of the components of the numerical control machine tool by water, improve the lubricating effect and service life of the lubricating oil, and then the annular pipe, the air suction nozzle, the air suction fan and the condenser cooperate. The annular pipe and the uniformly distributed air suction nozzle can fully and quickly extract the water vapor generated by heating. The condenser can efficiently condense the water vapor into liquid water. The water collection shell can collect the condensed water and completely separate the water in the lubricating oil.

Description

Technical Field

[0001] This invention relates to the field of lubricating oil purification technology, specifically to a lubricating oil purification and recycling system and process for CNC machine tools. Background Technology

[0002] In modern industrial production, CNC machine tools, with their significant advantages such as high precision, high efficiency, and high degree of automation, have become indispensable core equipment in the machinery manufacturing field. Lubricating oil, as a key auxiliary material for the normal operation of CNC machine tools, plays a vital role in reducing friction between machine tool components, reducing wear, dissipating heat, and preventing rust. It ensures smooth operation between the moving parts of the CNC machine tool, extends the service life of the machine tool, and guarantees machining accuracy and product quality.

[0003] With the long-term operation of CNC machine tools, lubricating oil will face a series of problems, which will seriously affect its performance and service life. On the one hand, lubricating oil will inevitably mix with water during use. This water may come from the humid air in the surrounding environment, especially in some workplaces with high humidity; it may also be caused by accidents such as coolant leakage during machine tool operation. The mixing of water will cause the lubricating oil to emulsify, which will destroy its original uniform oil film and lead to a significant decrease in lubrication performance. It is not convenient to treat the water in the lubricating oil. Therefore, this invention provides a lubricating oil purification and recycling system and process for CNC machine tools. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a lubricating oil purification and recycling system and process for CNC machine tools, which solves the problem that the mixing of water will cause the lubricating oil to emulsify, thereby destroying the original uniform oil film and causing a significant decrease in lubrication performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lubricating oil purification and recycling system for CNC machine tools, comprising a filter housing, wherein the filter housing is provided with an installation mechanism for purifying and recycling lubricating oil for CNC machine tools, the installation mechanism comprising: The pretreatment assembly includes a pretreatment shell fixed to the upper end of a filter shell, a pair of magnetic suction plates provided on the inner wall of the pretreatment shell, a mounting bracket fixed to the inner wall of the pretreatment shell, heating tubes evenly distributed inside the mounting bracket, an annular tube fixed to the upper end of the pretreatment shell, a suction fan fixed to one side of the annular tube, and a condenser connected to the lower end of the suction fan. A filter assembly includes a pair of support shafts disposed on the inner wall of a filter housing, a filter bracket disposed obliquely on the outer side of the support shafts, openings on both sides of the filter housing, and a support frame connected to the openings via a push assembly, a sliding shaft disposed at the upper end of the support frame, a camshaft connected to the lower end of the filter bracket via a drive assembly, a pair of guide blocks fixed at the upper end of the filter bracket, a fixing bracket fixed to the inner wall of the guide blocks, a filter screen baffle disposed inside the fixing bracket, and a recycling housing disposed on one side of the filter housing.

[0006] Preferably, the magnetic suction plate has through holes evenly distributed inside, and the magnetic suction plate is configured in two sets, with the two sets of magnetic suction plates arranged at an angle to each other. A cabinet door is provided on one side of the pre-treatment shell.

[0007] Preferably, a control seat for starting the heating tube is provided on one side of the pretreatment shell, air intakes are evenly distributed on the lower end face of the annular tube, and a water collection shell is fixed below the outlet end of the condenser on the side wall of the pretreatment shell.

[0008] Preferably, a slide rail bracket is fixed at the connection between the pretreatment shell and the filter shell, and a first electric push rod is fixed at one end of the slide rail bracket. The telescopic end of the first electric push rod is located inside the slide rail bracket and connected to a sealing plate.

[0009] Preferably, the push assembly includes a pair of second electric push rods fixed at the opening of the filter housing, the support frame is fixedly connected to the upper end of the second electric push rods, and the sliding shaft slides against the lower end edge of the filter bracket.

[0010] Preferably, the drive assembly includes an L-shaped bracket fixed at the center end of one side of the support frame, a micro motor is fixed inside the L-shaped bracket, the camshaft is located at the output end of the micro motor, and the camshaft is located at the lower end face of the filter bracket.

[0011] Preferably, a pair of fixed housings are fixed on one side of the support frame, and a shock-absorbing spring is fixed inside one end of the fixed housing. The inner ring of the shock-absorbing spring is provided with a damping support rod, and the damping support rod is fixedly connected to the fixed housing. A buffer block is fixed to the upper end of the shock-absorbing spring, and a push shaft is provided at the upper end of the buffer block. The push shaft is located at the lower end face of the filter bracket.

[0012] Preferably, the filter housing has collection housings fixed on both sides for collecting impurities filtered by the filter support, a conduit fixed at the lower end of the collection housing, the output end of the conduit connected to the recovery housing, and a guide pipe fixed at the upper end of the recovery housing.

[0013] Preferably, a limiting plate is fixed to the inner wall of the collecting shell, a filter screen is placed on the upper surface of the limiting plate, and a return pipe is provided at the lower end of the filtering shell.

[0014] This invention also provides a process for purifying and recycling lubricating oil for CNC machine tools, including the following steps: Step 1: The impure lubricating oil is fed into the pretreatment shell, and metal debris is adsorbed by the magnetic plate; then the heating tube and the suction fan are turned on, and the lubricating oil is dehydrated and initially purified through heating, suction and condensation. Step 2: The pretreated lubricating oil flows into the filter housing and is filtered through the adjustable angle filter bracket and the filter screen baffle on it; the micro motor drives the camshaft to make the filter bracket vibrate, preventing the filter screen from clogging and improving the filtration efficiency. Step 3: The oily impurities produced by filtration are collected in the collection shell. After secondary separation by the filter screen, the separated oil is returned to the system for secondary purification through the recovery shell and guide pipe. Finally, the purified oil is sent back to the machine tool oil tank through the return pipe to achieve closed-loop utilization.

[0015] This invention provides a system and process for purifying and recycling lubricating oil for CNC machine tools. Compared with the prior art, it has the following advantages: Firstly, the mounting bracket of this invention works in conjunction with the heating tubes. The evenly distributed heating tubes ensure uniform heating of the lubricating oil, efficiently evaporating moisture from the lubricating oil and preventing moisture from mixing into it, which could lead to emulsification and decreased lubrication performance. Simultaneously, it prevents moisture from corroding CNC machine tool components, improving the lubrication effect and service life of the lubricating oil. Then, the annular tube, suction nozzle, and suction fan work in conjunction with the condenser. The annular tube and evenly distributed suction nozzles comprehensively and quickly extract the water vapor generated by heating. The condenser efficiently condenses the water vapor into liquid water, and the water collection shell centrally collects the condensate, completely separating the moisture from the lubricating oil and further improving its purity. At the same time, the magnetic suction plate is tilted and has internal through holes, maximizing the contact area with the lubricating oil and efficiently adsorbing metal debris from it, preventing metal debris from entering subsequent filter components and the interior of the CNC machine tool.

[0016] Secondly, the filter bracket of this invention is set with two sets to achieve multi-stage filtration. Combined with the filtration effect of the filter screen baffle, the filtration accuracy is greatly improved compared with the previous two implementation methods. It can completely intercept fine impurities in the lubricating oil, ensuring higher purity of the lubricating oil used in circulation. This further improves the lubrication protection effect on CNC machine tools, avoids equipment wear caused by fine impurities, and extends the service life of CNC machine tools. In addition, the micro motor provides power to drive the camshaft to rotate, causing the filter bracket to vibrate regularly, effectively preventing impurities from clogging the filter screen, improving filtration efficiency and quality. At the same time, the movement distance of the support frame is controlled, thereby accurately adjusting the angle of the filter bracket to meet different filtration needs and improve the filtration effect.

[0017] Thirdly, the impurity collection and secondary recovery system of the present invention, consisting of a collection shell, a conduit, a recovery shell, a guide pipe, a limiting plate, and a filter plate, can perform secondary filtration on insufficiently filtered oily impurities, separate the lubricating oil from the impurities, and send it back into the purification system, thereby achieving full recycling of lubricating oil, further reducing lubricating oil waste and lowering operating costs. At the same time, impurities are collected in the collection shell, and the filter plate is supported by the limiting plate, which facilitates the removal and placement of the filter plate and makes maintenance convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural diagram of the recyclable outer shell of the present invention; Figure 3 This is a schematic diagram of the filter plate structure of the present invention; Figure 4 This is a schematic diagram of the structure of the catheter of the present invention; Figure 5 This is a schematic diagram of the internal structure of the pre-processed outer shell of the present invention; Figure 6 This is a schematic diagram of the filter support structure of the present invention; Figure 7 This is a schematic diagram of the filter screen baffle structure of the present invention; Figure 8 This is a schematic diagram of the support shaft structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Filter housing; 2. Pretreatment housing; 201. Magnetic plate; 202. Mounting bracket; 203. Heating tube; 204. Circular tube; 205. Suction nozzle; 206. Fan; 207. Condenser; 3. Water collection housing; 301. Control base; 302. Slide rail bracket; 303. First electric push rod; 304. Sealing plate; 4. Cabinet door; 5. Support shaft; 501. Filter bracket; 502. Guide block; 503. Fixing bracket 504. Filter screen baffle; 6. Second electric push rod; 601. Support frame; 602. Sliding shaft; 7. Fixed housing; 701. Buffer block; 702. Push shaft; 703. Shock-absorbing spring; 704. Damping support rod; 705. L-shaped bracket; 706. Micro motor; 707. Camshaft; 8. Collection housing; 801. Conduit; 802. Recycling housing; 803. Guide pipe; 804. Limiting plate; 805. Filter screen plate; 9. Return pipe. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 9 The present invention provides the following three technical solutions. First embodiment: A lubricating oil purification and recycling system for CNC machine tools includes a filter housing 1, on which a mounting mechanism for purifying and recycling lubricating oil for CNC machine tools is provided. The mounting mechanism includes: The pretreatment assembly includes a pretreatment housing 2 fixed to the upper end of the filter housing 1, a pair of magnetic suction plates 201 provided on the inner wall of the pretreatment housing 2, a mounting bracket 202 fixed to the inner wall of the pretreatment housing 2, heating tubes 203 evenly distributed inside the mounting bracket 202, an annular tube 204 fixed to the upper end of the pretreatment housing 2, a suction fan 206 fixed to one side of the annular tube 204, and a condenser 207 connected to the lower end of the suction fan 206. The filter assembly includes a pair of support shafts 5 disposed on the inner wall of the filter housing 1. A filter bracket 501 is obliquely disposed on the outer side of the support shafts 5. Openings are provided on both sides of the filter housing 1, and a support frame 601 connected to the openings via a push assembly is disposed at the openings. A sliding shaft 602 is disposed at the upper end of the support frame 601. A camshaft 707 connected to the lower end of the filter bracket 501 via a drive assembly is disposed at the lower end of the filter bracket 501. A pair of guide blocks 502 are fixed at the upper end of the filter bracket 501. A fixing bracket 503 is fixed on the inner wall of the guide block 502. A filter screen baffle 504 is disposed inside the fixing bracket 503. A recycling housing 802 is disposed on one side of the filter housing 1.

[0022] In this embodiment of the invention, the magnetic suction plate 201 has through holes evenly distributed inside. The magnetic suction plate 201 is configured in two sets, and the two sets of magnetic suction plates 201 are arranged at an angle to each other. A cabinet door 4 is provided on one side of the pretreatment shell 2. The lubricating oil containing oil debris is sent into the pretreatment shell 2. The magnetic suction plate 201 can attract the metal debris. Then the cabinet door 4 is opened and closed by bolts to clean the metal debris inside.

[0023] Specifically, the lubricating oil containing oil debris is first fed into the pretreatment housing 2 fixed at the upper end of the filter housing 1. After entering, it first contacts a pair of inclined magnetic suction plates 201 set on the inner wall of the pretreatment housing 2. The magnetic suction plates 201 magnetically attract the metal debris mixed in the lubricating oil, realizing the initial separation of metal impurities. Since the magnetic suction plates 201 have uniformly opened through holes inside, they will not obstruct the normal flow of lubricating oil, and the inclined and opposite arrangement can increase the contact area with the lubricating oil and improve the adsorption effect.

[0024] In this embodiment of the invention, a control seat 301 for starting the heating tube 203 is provided on one side of the pretreatment shell 2, and air intake nozzles 205 are evenly distributed on the lower end face of the annular tube 204. A water collection shell 3 is fixed below the outlet end of the condenser 207 on the side wall of the pretreatment shell 2. A slide rail bracket 302 is fixed at the connection between the pretreatment shell 2 and the filter shell 1. A first electric push rod 303 is fixed at one end of the slide rail bracket 302. A sealing plate 304 is connected to the telescopic end of the first electric push rod 303 inside the slide rail bracket 302. The sealing plate 304 closes the connection between the pretreatment shell 2 and the filter shell 1.

[0025] Specifically, after the lubricating oil has completed the initial adsorption of metal debris, it flows through the mounting bracket 202 fixed to the inner wall of the pretreatment shell 2. The heating tubes 203, which are evenly distributed inside the mounting bracket 202, are started under the control of the control seat 301 set on one side of the pretreatment shell 2 to heat the lubricating oil, causing the water mixed in the lubricating oil to evaporate and form water vapor. The suction fan 206 on one side of the annular pipe 204 fixed at the upper end of the pretreatment shell 2 is started, and the water vapor generated by heating is extracted through the suction nozzles 205 evenly distributed on the lower end face of the annular pipe 204 and sent into the condenser 207 connected to the lower end of the suction fan 206. The condenser 207 condenses the water vapor into liquid water, and the liquid water falls into the water collection shell 3 fixed to the side wall of the pretreatment shell 2 below the outlet end of the condenser 207 and is collected, thus realizing the separation of lubricating oil and water. After pretreatment, the first electric push rod 303 at one end of the slide rail bracket 302 fixed at the connection between the pretreatment housing 2 and the filter housing 1 is activated, which drives the sealing plate 304 connected inside the slide rail bracket 302 to move, opening the connection between the pretreatment housing 2 and the filter housing 1, so that the pretreated lubricating oil can flow smoothly into the filter housing 1 and enter the subsequent filtration stage; when it is necessary to clean the magnetic suction plate 201 inside the pretreatment housing 2, the pretreatment housing 2 can be opened through the cabinet door 4 on one side of the pretreatment housing 2 to clean the metal debris adsorbed on the magnetic suction plate 201. After cleaning, the cabinet door 4 can be closed and the housing can be put back into use.

[0026] The second embodiment differs from the first embodiment in that the pushing assembly includes a pair of second electric push rods 6 fixed at the opening of the filter housing 1, a support frame 601 fixedly connected to the upper end of the second electric push rods 6, and a sliding shaft 602 sliding against the lower end edge of the filter bracket 501 to control the angle of the filter bracket 501. The lubricating oil treated by the pretreatment assembly flows into the interior of the filter housing 1 and falls onto the filter bracket 501, which is inclined outside the pair of support shafts 5 set on the inner wall of the filter housing 1. A pair of guide blocks 502 fixed at the upper end of the filter bracket 501 can guide the flowing lubricating oil.

[0027] When the pair of second electric push rods 6 fixed at the opening of the filter housing 1 are activated, they drive the support frame 601 fixedly connected to the upper end to move up and down. The sliding shaft 602 set at the upper end of the support frame 601 moves with the support frame 601. The sliding shaft 602 slides against the edge of the lower end face of the filter bracket 501, thereby flexibly adjusting the tilt angle of the filter bracket 501 to adapt to different filtration needs.

[0028] The drive assembly includes an L-shaped bracket 705 fixed at the center end of one side of the support frame 601. A micro motor 706 is fixed inside the L-shaped bracket 705. A camshaft 707 is located at the output end of the micro motor 706 and is located at the lower end face of the filter bracket 501. A pair of fixed housings 7 are fixed on one side of the support frame 601. A shock-absorbing spring 703 is fixed inside one end of the fixed housing 7. A damping rod 704 is provided in the inner ring of the shock-absorbing spring 703 and is fixedly connected to the fixed housing 7. A buffer block 701 is fixed at the upper end of the shock-absorbing spring 703. A push shaft 702 is provided at the upper end of the buffer block 701 and is located at the lower end face of the filter bracket 501.

[0029] Furthermore, a fixed bracket 503 is fixed to the inner wall of the guide block 502 on the filter bracket 501. The filter screen baffle 504 set inside the fixed bracket 503 performs fine filtration of the lubricating oil, intercepts the fine impurities in the lubricating oil that were not separated cleanly in the pretreatment stage, and achieves deep purification of the lubricating oil. Among them, the micro motor 706 inside the L-shaped bracket 705 fixed at the center end of one side of the support frame 601 is started, which drives the camshaft 707 connected to its output end to rotate. When the camshaft 707 rotates, it continuously pushes the lower end face of the filter bracket 501, causing the filter bracket 501 to swing continuously around the support shaft 5. At the same time, the damping springs 703 inside the pair of fixed housings 7 fixed on one side of the support frame 601 have damping support rods 704 fixedly connected to the fixed housings 7 in the inner ring. They support the lower end face of the filter bracket 501 through the buffer block 701 fixed at the upper end and the push shaft 702, which play a buffering and shock-absorbing role when the filter bracket 501 swings, absorbing the impact force generated by the swing. The swing and tilt angle adjustment of the filter bracket 501 can prevent the filter screen baffle 504 from being blocked by the accumulation of impurities, thus ensuring smooth filtration. At the same time, the impurities generated during the filtration process that are not completely intercepted by the filter screen baffle 504 or that fall off the filter screen baffle 504 will slide down into the collection structures set on both sides of the filter housing 1 as the filter bracket 501 swings and tilts.

[0030] The third embodiment differs from the first and second embodiments in that: Collection housings 8 for collecting impurities filtered by the filter support 501 are fixed on both sides of the filter housing 1. A conduit 801 is fixed to the lower end of the collection housing 8, and the output end of the conduit 801 is connected to the recovery housing 802. A guide pipe 803 is fixed to the upper end of the recovery housing 802. A limiting plate 804 is fixed to the inner wall of the collection housing 8, and a filter screen plate 805 is placed on the upper surface of the limiting plate 804. A return pipe 9 is provided at the lower end of the filter housing 1. The filter support 501 has two sets of multi-stage filters inside the filter housing 1. A filter screen baffle 504 is provided on the filter support 501, which can further filter impurities when the filter support 501 tilts and slides. Simultaneously, insufficiently filtered oily impurities will slide down and be collected in the collection housing 8, further filtered by the filter screen plate 805, and then sent to the recovery housing 802. The guide pipe 803, under the action of the pump, sends the oil to the inside of the filter housing 1 for purification again. The thoroughly purified oil is discharged through the return pipe 9 and sent into the lubricating oil tank of the machine tool. The limiting plate 804 fixed on the inner wall of the collection housing 8 supports the filter screen plate 805 placed on its upper end. The oil-containing impurities in the collection housing 8 slide down and are further filtered by the filter screen plate 805 to separate the lubricating oil from the impurities. The guide pipe 801 fixed at the lower end of the collection housing 8 sends the lubricating oil filtered by the filter screen plate 805 into the recovery housing 802. The guide pipe 803 fixed at the upper end of the recovery housing 802, under the action of the pump, sends the lubricating oil collected in the recovery housing 802 back into the inside of the filter housing 1 for secondary purification and filtration to ensure that the lubricating oil is thoroughly purified. The thoroughly purified lubricating oil is discharged through the return pipe 9 set at the lower end of the filter housing 1 and sent into the lubricating oil tank of the machine tool, realizing the closed-loop recycling of lubricating oil.

[0031] This invention also provides a process for purifying and recycling lubricating oil for CNC machine tools, including the following steps: Step 1: The impure lubricating oil is fed into the pretreatment shell 2, and the magnetic suction plate 201 is used to adsorb metal debris; then the heating tube 203 and the suction fan 206 are started, and the lubricating oil is dehydrated and initially purified through heating, suction and condensation. Step 2: The pretreated lubricating oil flows into the filter housing 1 and is filtered through the adjustable angle filter bracket 501 and its filter screen baffle 504. The micro motor 706 drives the camshaft 707 to vibrate the filter bracket, preventing the filter screen from clogging and improving the filtration efficiency. Specifically, when the camshaft 707 rotates, it continuously pushes the lower end face of the filter bracket 501, causing the filter bracket 501 to swing continuously around the support shaft 5. At the same time, a pair of shock-absorbing springs 703 fixed inside the fixed housing 7 on one side of the support frame 601 have a damping support rod 704 fixedly connected to the fixed housing 7 in the inner ring. They are supported by the buffer block 701 fixed at the upper end and the push shaft 702, which play a buffering and shock-absorbing role when the filter bracket 501 swings, absorbing the impact force generated by the swing. Step 3: The oily impurities produced by filtration are collected in the collection shell 8. After secondary separation by the filter plate 805, the separated oil is returned to the system for secondary purification through the recovery shell 802 and the guide pipe 803. Finally, the purified oil is sent back to the machine tool oil tank through the return pipe 9 to achieve closed-loop utilization.

[0032] The aforementioned components include a RS-385SH micro motor, a DTZ100 electric actuator, a DBY-10 micro gear pump, a 304 stainless steel single-head heating element, and a PLC S7-1200 small control unit.

[0033] Working principle: The lubricating oil containing oil debris is first sent into the pretreatment shell 2, where the inclined magnetic suction plates 201 adsorb the metal debris; the heating tube 203 heats the lubricating oil when the control seat 301 is started; the suction fan 206 draws away water vapor through the annular pipe 204 and the suction nozzle 205, and the water is collected in the water collection shell 3 after being condensed by the condenser 207; after pretreatment, the first electric push rod 303 controls the sealing plate 304 to open, and the lubricating oil flows into the filter shell 1 and falls on the filter bracket 501 supported by the support shaft 5, where the filter screen baffle 504 performs filtration; In the second embodiment, the second electric push rod 6 adjusts the support frame 601 and the sliding shaft 602 to change the angle of the filter bracket 501. The micro motor 706 drives the camshaft 707 to make the filter bracket swing. The shock-absorbing spring 703 and the damping support rod 704 buffer the vibration through the buffer block 701 and the push shaft 702. After filtration, the impurities slide down to the collection shell 8. In the third embodiment, the filter screen plate 805 further separates the oil and impurities on the limiting plate 804. The oil enters the recovery shell 802 through the conduit 801 and is then pumped back to the filter shell 1 through the guide pipe 803 for secondary purification. Finally, the purified oil is discharged through the return pipe 9 and sent back to the machine tool lubrication oil tank for recycling.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 lubricating oil purification and recycling system for CNC machine tools, comprising a filter housing (1), characterized in that: The filter housing (1) is provided with an installation mechanism for the purification and circulation of lubricating oil for CNC machine tools. The installation mechanism includes: The pretreatment assembly includes a pretreatment shell (2) fixed to the upper end of a filter shell (1). A pair of magnetic suction plates (201) are provided on the inner wall of the pretreatment shell (2). A mounting bracket (202) is fixed to the inner wall of the pretreatment shell (2). Heating tubes (203) are evenly distributed inside the mounting bracket (202). An annular tube (204) is fixed to the upper end of the pretreatment shell (2). A suction fan (206) is fixed to one side of the annular tube (204). A condenser (207) is connected to the lower end of the suction fan (206). The filter assembly includes a pair of support shafts (5) disposed on the inner wall of the filter housing (1). A filter bracket (501) is obliquely disposed on the outer side of the support shaft (5). The filter housing (1) has openings on both sides, and a support frame (601) connected by a push assembly is disposed at the opening. A sliding shaft (602) is disposed at the upper end of the support frame (601). A cam shaft (707) connected by a drive assembly is disposed at the lower end of the filter bracket (501). A pair of guide blocks (502) are fixed at the upper end of the filter bracket (501). A fixing bracket (503) is fixed on the inner wall of the guide block (502). A filter screen baffle (504) is disposed inside the fixing bracket (503). A recycling housing (802) is disposed on one side of the filter housing (1).

2. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: The magnetic suction plate (201) has through holes evenly distributed inside. The magnetic suction plate (201) is set in two groups, and the two groups of magnetic suction plates (201) are arranged at an angle to each other. The pre-treatment shell (2) has a cabinet door (4) on one side.

3. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: A control seat (301) for starting the heating tube (203) is provided on one side of the pretreatment shell (2), and air intake nozzles (205) are evenly distributed on the lower end face of the annular tube (204). A water collection shell (3) is fixed below the outlet end of the condenser (207) on the side wall of the pretreatment shell (2).

4. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: A slide rail bracket (302) is fixed at the connection between the pretreatment shell (2) and the filter shell (1). A first electric push rod (303) is fixed at one end of the slide rail bracket (302). The telescopic end of the first electric push rod (303) is located inside the slide rail bracket (302) and connected to a sealing plate (304).

5. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: The push assembly includes a pair of second electric push rods (6) fixed at the opening of the filter housing (1), the support frame (601) is fixedly connected to the upper end of the second electric push rods (6), and the sliding shaft (602) slides against the lower end edge of the filter bracket (501).

6. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: The drive assembly includes an L-shaped bracket (705) fixed at the center end of one side of the support frame (601), a micro motor (706) is fixed inside the L-shaped bracket (705), the camshaft (707) is located at the output end of the micro motor (706), and the camshaft (707) is located at the lower end face of the filter bracket (501).

7. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: A pair of fixed housings (7) are fixed on one side of the support frame (601). A shock-absorbing spring (703) is fixed inside one end of the fixed housing (7). A damping support rod (704) is provided on the inner ring of the shock-absorbing spring (703), and the damping support rod (704) is fixedly connected to the fixed housing (7). A buffer block (701) is fixed on the upper end of the shock-absorbing spring (703). A push shaft (702) is provided on the upper end of the buffer block (701). The push shaft (702) is located on the lower end face of the filter bracket (501).

8. The lubricating oil purification and recycling system for CNC machine tools according to claim 1, characterized in that: The filter housing (1) has collection housings (8) fixed on both sides for collecting impurities filtered by the filter support (501). The lower end of the collection housing (8) is fixed with a conduit (801). The output end of the conduit (801) is connected to the recovery housing (802). The upper end of the recovery housing (802) is fixed with a guide pipe (803).

9. The lubricating oil purification and recycling system for CNC machine tools according to claim 8, characterized in that: The inner wall of the collection shell (8) is fixed with a limiting plate (804), a filter plate (805) is placed on the upper surface of the limiting plate (804), and a return pipe (9) is provided at the lower end of the filter shell (1).

10. A lubricating oil purification and recycling system for CNC machine tools, applicable to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Send the impure lubricating oil into the pretreatment shell (2) and use the magnetic suction plate (201) to adsorb metal debris; then start the heating tube (203) and the suction fan (206) to achieve dehydration and preliminary purification of the lubricating oil through heating, suction and condensation. Step 2: The pretreated lubricating oil flows into the filter housing (1) and is filtered through the adjustable angle filter bracket (501) and the filter screen baffle (504) on it; the micro motor (706) drives the camshaft (707) to make the filter bracket vibrate, preventing the filter screen from clogging and improving the filtration efficiency. Step 3: The oily impurities produced by filtration are collected in the collection shell (8). After secondary separation by the filter screen plate (805), the separated oil is returned to the system for secondary purification through the recovery shell (802) and the guide pipe (803). Finally, the purified oil is sent back to the machine tool oil tank through the return pipe (9) to achieve closed-loop utilization.

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