Special oil mist collecting and processing device for numerical control lathe

Abstract

The special oil mist collecting and processing device comprises a fixed cylinder and an outer cylinder arranged on one side of the fixed cylinder, a rotating disc is rotationally installed on the fixed cylinder through a driving mechanism, a hub located in the outer cylinder is arranged on one side of the rotating disc, a plurality of centrifugal holes are formed in the side wall of the periphery of the hub, and the centrifugal holes are communicated with the rotating disc. And a filtering layer is arranged on the inner side wall of the hub, an impeller abutting against the inner side of the hub is further arranged on one side of the rotating disc, and the air inlet of the outer cylinder is further formed in a collecting opening in the top of the numerical control lathe through a fastening mechanism. By means of the mode that contaminated air is effectively collected and filtered from the source, potential safety hazards brought to the bodies of workers are reduced, and unnecessary production halt events caused by the fact that sensitive electrical equipment is damaged by oil mist are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of CNC lathes, and in particular to an oil mist collection and treatment device dedicated to CNC lathes. Background Art

[0002] Currently, during production operations such as milling, drilling, turning and grinding, it is often necessary to spray high-pressure oil and coolant onto metal parts to keep them cool.

[0003] In the related art, there are four main types of metalworking fluids used to keep metals cool, namely mineral oil with additives, soluble oil, semi-synthetic fluid and synthetic fluid. Each of the above four types of metalworking fluids has its own specific properties to suit certain specific applications.

[0004] With respect to the above-mentioned related technologies, the inventors believe that: during the manufacturing process, when any of the above-mentioned four metalworking fluids is used for spray cooling, there is one thing in common, that is, oil mist particles will be generated. These oil mist particles will not only pose a safety hazard to the workers, but may also damage sensitive electrical equipment, leading to unnecessary production stoppages. Utility Model Content

[0005] The purpose of this application is to provide an oil mist collection and treatment device dedicated to CNC lathes to solve the problem that when any of the above four metalworking fluids are used for spray cooling during the manufacturing process, they all have one thing in common, that is, oil mist particles will be generated. These oil mist particles will not only pose a safety hazard to the workers, but may also damage sensitive electrical equipment, leading to unnecessary production stoppages.

[0006] The oil mist collection and treatment device for CNC lathes provided in this application adopts the following technical solution:

[0007] A special oil mist collection and treatment device for a CNC lathe comprises a fixed cylinder and an outer cylinder arranged on one side of the fixed cylinder, a turntable is rotatably mounted on the fixed cylinder by a driving mechanism, a hub located inside the outer cylinder is arranged on one side of the turntable, a plurality of centrifugal holes are opened on the side walls around the hub, and a filter layer is arranged on the inner side wall of the hub, an impeller abutting against the inner side of the hub is also arranged on one side of the turntable, and an air inlet of the outer cylinder is also arranged at a collection port on the top of the CNC lathe by a fastening mechanism.

[0008] Furthermore, the driving mechanism includes a carrier frame arranged inside the fixed cylinder, a driving motor is arranged on one side of the carrier frame through a locking assembly, an output end of the driving motor is connected to one side of the turntable, and a reinforcement assembly is also arranged between the fixed cylinder and the carrier frame.

[0009] Furthermore, the locking assembly includes a plurality of locking bolts and a plurality of locking nuts, the bearing frame is provided with a plurality of bearing holes, the outer side of the drive motor is provided with a plurality of locking holes corresponding to the bearing holes, the locking bolts respectively cooperate with the bearing holes and the locking holes, and the locking bolts are threadedly connected to the locking nuts.

[0010] Furthermore, the reinforcement assembly includes a plurality of reinforcement rods, one end of each of the reinforcement rods is respectively connected to the inner side of the fixing tube, and the other end is respectively connected to one side of the supporting frame, and a plurality of reinforcement ring rods are also arranged between the plurality of reinforcement rods.

[0011] Furthermore, a buckle assembly is symmetrically arranged between the outer side of the outer tube and the outer side of the fixed tube, and the buckle assembly includes a lock buckle arranged on the outer side wall of the outer tube, and a bracket engaged with the lock buckle is arranged on the outer side wall of the fixed tube.

[0012] Furthermore, a filter assembly is provided on a side of the fixed cylinder facing away from the outer cylinder, and the filter assembly is used for secondary filtering of the oil mist.

[0013] Furthermore, the filter assembly includes an annular base arranged on the side of the fixed cylinder away from the outer cylinder, an annular groove is provided on the side of the annular base away from the fixed cylinder, an inner mesh cylinder is arranged in the annular groove, an annular filter element is sleeved on the outer side of the inner mesh cylinder, an outer mesh cylinder covering the annular filter element is also arranged in the annular groove, and a top cover is provided on the side of the outer mesh cylinder away from the annular base.

[0014] Furthermore, the fastening mechanism includes an air inlet ring sleeve arranged on the side of the outer cylinder away from the fixed cylinder, the air inlet ring sleeve is tightly matched with the top collecting port of the CNC lathe, and a plurality of air inlet holes are also opened on the side of the outer cylinder away from the fixed cylinder, and the plurality of air inlet holes are all located inside the air inlet ring sleeve, and a tight assembly is also arranged between the outer cylinder and the CNC lathe.

[0015] Furthermore, the tightening assembly includes a plurality of tightening rods arranged on the side of the outer cylinder away from the fixed cylinder, a tightening screw is arranged at one end of the plurality of tightening rods, a plurality of tightening holes matching the tightening rods are opened on the top of the CNC lathe, and a plurality of tightening nuts are also threadedly connected to the plurality of tightening screws.

[0016] Furthermore, the inner side of the bottom of the outer cylinder is in an arc-shaped structure that bulges downward, and the arc-shaped structure matches the air inlet hole.

[0017] Compared with the prior art, the beneficial effect of the present application lies in: by setting a structure in which a fixed cylinder, an outer cylinder, a fastening mechanism, a driving mechanism, a turntable, a hub, a filter layer and an impeller cooperate with each other, when the driving mechanism is started, the driving mechanism drives the turntable to rotate, and the turntable simultaneously drives the hub and the impeller to rotate in the outer cylinder, so that a negative pressure is generated inside the outer cylinder to suck the oil mist and fume generated in the CNC lathe into the inside of the hub, and the rotating impeller collides with the oil mist and fume at high speed, so that the filter layer on the inner side of the hub accelerates the fusion and filtration of the oil mist and fume, and filters out solid particles, and the filtered air returns to the workshop along the top of the device, thereby effectively collecting and filtering the dirty air from the source, not only reducing the safety hazards to the health of the staff, but also reducing the damage of sensitive electrical equipment by oil mist and causing unnecessary production stoppages.

[0018] On the other hand, the rotating wheel hub splashes the filtered oil out of the inner side of the outer cylinder along the centrifugal hole through centrifugal force, so that the oil flows back to the interior of the CNC lathe along the air inlet of the outer cylinder, thereby facilitating the recycling or centralized collection of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the oil mist collection and treatment device dedicated to the CNC lathe embodiment of the present application.

[0020] Figure 2 yes Figure 1 Explosion diagram in .

[0021] Figure 3 It is a schematic diagram of the structure of the driving mechanism of the embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of the structure of the reinforcement component of the embodiment of the present application.

[0023] Figure 5 It is a structural schematic diagram of the fastening mechanism of an embodiment of the present application.

[0024] Figure 6 It is a schematic diagram of the structure of the filter assembly of the embodiment of the present application.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. CNC lathe; 11. Tight hole; 2. Fixed cylinder; 21. Carrying frame; 22. Carrying hole; 23. Driving motor; 24. Locking hole; 25. Locking bolt; 26. Locking nut; 27. Reinforcement rod; 28. Reinforcement ring rod; 29. ​​Tray; 3. Outer cylinder; 31. Air inlet hole; 32. Lock buckle; 33. Air inlet ring sleeve; 34. Tight rod; 35. Tight screw; 36. Tight nut; 4. Turntable; 5. Hub; 51. Centrifugal hole; 52. Filter layer; 6. Impeller; 7. Annular base; 71. Annular groove; 72. Inner mesh cylinder; 73. Annular filter element; 74. Outer mesh cylinder; 75. Top cover; 8. Buffer block. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-6 This application is described in further detail.

[0027] The present application embodiment discloses a special oil mist collection and treatment device for a CNC lathe, referring to Figure 1 and Figure 2 In this embodiment, the oil mist collection and treatment device is installed at the top collection port of the CNC lathe 1, and the oil mist collection and treatment device includes a fixed cylinder 2, an outer cylinder 3, a fastening mechanism, a driving mechanism, a turntable 4, a hub 5, a filter layer 52 and an impeller 6. Among them, the fixed cylinder 2 and the outer cylinder 3 are both cylindrical structures, the height of the fixed cylinder 2 is shorter than the height of the outer cylinder 3, and the two ends of the fixed cylinder 2 are through, one end of the outer cylinder 3 is through and the other end is closed, and a plurality of air inlet holes 31 are opened at the closed end of the outer cylinder 3, and the arrangement of these air inlet holes 31 facilitates the oil mist in the CNC lathe 1 to enter the interior of the outer cylinder 3.

[0028] At the same time, one end of the outer cylinder 3 is fixedly installed on the bottom of the fixed cylinder 2 through two snap-fit ​​assemblies, the side of the outer cylinder 3 facing away from the fixed cylinder 2 is installed at the collecting port on the top of the CNC lathe 1 through a fastening mechanism, and the driving mechanism is installed on the inner side of the fixed cylinder 2; the turntable 4 is rotatably installed on the inner side of one end of the fixed cylinder 2 facing the outer cylinder 3, and the output end of the driving mechanism is fixedly connected to one side of the turntable 4 to drive the turntable 4 to rotate.

[0029] In addition, the hub 5 is an inner cylinder with a cylindrical structure and two ends through, one end of the inner cylinder is fixedly mounted on the side of the turntable 4 away from the driving mechanism, the other end of the inner cylinder extends into the interior of the outer cylinder 3, and the surrounding side walls of the inner cylinder are provided with a plurality of centrifugal holes 51; at the same time, a filter layer 52 is fixedly attached to the inner side of the inner cylinder, and the filter layer 52 is a filter cotton to effectively filter the oil mist. The impeller 6 is mounted on the side of the turntable 4 away from the driving mechanism, and the four blades on the impeller 6 are respectively in contact with the inner side wall of the hub 5.

[0030] When the driving mechanism is started, the output end of the driving mechanism drives the turntable 4 to rotate, and the turntable 4 simultaneously drives the hub 5 and the impeller 6 to rotate in the outer cylinder 3, so that negative pressure is generated inside the outer cylinder 3 to suck the oil mist and fume generated in the CNC lathe 1 into the hub 5, and then the rotating impeller 6 collides with the oil mist and fume at high speed, so that the filter layer 52 on the inner side of the hub 5 accelerates the fusion and filtration of the oil mist and fume, and filters out solid particles. The filtered air returns to the workshop along the top of the fixed cylinder 2, thereby effectively collecting and filtering the dirty air from the source, thereby not only reducing the safety hazards to the health of the staff, but also reducing the damage of sensitive electrical equipment by oil mist and causing unnecessary production stoppages.

[0031] On the other hand, the rotating hub 5 splashes the filtered oil out of the inner side of the outer cylinder 3 along the centrifugal holes 51 through centrifugal force, so that the oil flows back to the interior of the CNC lathe 1 along the air inlet holes 31 at the bottom of the outer cylinder 3, thereby facilitating the recycling or centralized collection of the oil.

[0032] Preferably, in this embodiment, the inner side of the bottom of the outer cylinder 3 is an arc-shaped structure that bulges downward, and the arc-shaped structure cooperates with the air inlet holes 31 to facilitate the oil splashing out from the centrifugal holes 51 to be gathered to the bottom of the outer cylinder 3, so that the oil can flow back to the interior of the CNC lathe 1 more smoothly along the air inlet holes 31, thereby achieving the effect of quickly collecting the oil.

[0033] The structures of the driving mechanism, buckle assembly and fastening mechanism are described in detail below:

[0034] Specifically, refer to Figure 2-Figure 4 In this embodiment, the driving mechanism includes a carrier 21, a driving motor 23, a locking assembly, and a reinforcement assembly. The carrier 21 is fixedly mounted on the inner wall of the fixed cylinder 2, and a plurality of holes are provided on the carrier 21, which facilitate the filtered air to return to the workshop along the top of the fixed cylinder 2; the driving motor 23 is installed on the side of the carrier 21 away from the turntable 4 through the locking assembly, and the output end of the driving motor 23 passes through the carrier 21 and is fixedly connected to one side of the turntable 4, so as to drive the turntable 4 to rotate.

[0035] More specifically, the locking assembly includes a locking bolt 25 and a locking nut 26. A plurality of bearing holes 22 are provided on the bearing frame 21, and a plurality of locking holes 24 are provided on the outer side of the driving motor 23, and the locking holes 24 correspond to the bearing holes 22; and a plurality of locking bolts 25 and locking nuts 26 are provided, and the plurality of locking bolts 25 are respectively threadedly connected with the plurality of locking nuts 26, and the number of locking bolts 25 and locking nuts 26 is consistent with the number of locking holes 24 and bearing holes 22.

[0036] At the same time, the locking bolt 25 cooperates with the bearing hole 22 and the locking hole 24 respectively, so that the locking bolt 25 can pass through the bearing hole 22 and the locking hole 24 in sequence, and then the locking nut 26 is screwed into the locking bolt 25, so that the drive motor 23 can be firmly installed on the bearing frame 21.

[0037] Preferably, a plurality of buffer blocks 8 are provided between the drive motor 23 and the carrier frame 21. The buffer blocks 8 are all rubber blocks. The number of the buffer blocks 8 is consistent with the number of the locking holes 24 and the bearing holes 22. The buffer blocks 8 are located between the locking holes 24 and the bearing holes 22, and buffer holes that cooperate with the locking bolts 25 are provided on the buffer blocks 8. The locking bolts 25 simultaneously penetrate the locking holes 24, the buffer holes and the bearing holes 22 in sequence, and then the locking nuts 26 are screwed into the locking bolts 25, so as to facilitate the secure installation of the buffer blocks 8 between the drive motor 23 and the carrier frame 21, thereby facilitating the effective buffering of the drive motor 23.

[0038] In addition, in this embodiment, the reinforcement component is arranged between the fixing tube 2 and the support frame 21, so as to effectively reinforce the support frame 21. Figure 3 and Figure 4 The reinforcement assembly includes a reinforcement rod 27 and a reinforcement ring rod 28. There are multiple reinforcement rods 27, one end of which is connected to the inner side of the fixed cylinder 2, and the other end of which is connected to the side of the carrier 21 away from the drive motor 23; there are multiple reinforcement ring rods 28, all of which are ring-shaped structures, and the inner sides of the reinforcement ring rods 28 are respectively surrounded and welded to the reinforcement rods 27.

[0039] The structure in which the reinforcement rod 27 and the reinforcement ring rod 28 cooperate with each other can effectively reinforce the support frame 21 , so that the drive motor 23 can be installed on the support frame 21 more stably.

[0040] In addition, refer to Figure 1 In this embodiment, the buckle assembly includes a lock buckle 32 and a card holder 29. The lock buckle 32 is fixedly mounted on the outer wall of the outer tube 3 close to the fixed tube 2; the card holder 29 is mounted on the outer wall of the fixed tube 2 close to the outer tube 3, and the card holder 29 and the lock buckle 32 are engaged with each other. By fixing the lock buckle 32 on the card holder 29, the fixed tube 2 and the outer tube 3 are closely matched and tightly installed, thereby strengthening the tightness between the fixed tube 2 and the outer tube 3 to avoid oil mist leakage.

[0041] Secondly, refer to Figure 2 and Figure 5In this embodiment, the fastening mechanism includes an air inlet sleeve 33 and a tight assembly. The air inlet sleeve 33 is fixedly mounted on the side of the outer cylinder 3 away from the fixed cylinder 2, and the air inlet holes 31 are all located inside the air inlet sleeve 33. Specifically, the air inlet sleeve 33 is a rubber sleeve, which is tightly pressed against the top collecting port of the CNC lathe 1, which can not only effectively isolate vibration and seal to avoid oil mist leakage, but also effectively guide the oil mist, fume and oil backflow.

[0042] When negative pressure is generated inside the outer cylinder 3, the oil mist and fume generated in the CNC lathe 1 enters the air inlet ring sleeve 33 along the top collecting port of the CNC lathe 1, and then is discharged into the inner part of the outer cylinder 3 along the air inlet hole 31, so as to filter the oil mist and fume.

[0043] At the same time, the tight assembly is arranged between the outer cylinder 3 and the CNC lathe 1 to further strengthen the tightness between the air inlet ring sleeve 33 and the CNC lathe 1. Figure 5 In this embodiment, the tight assembly includes a tight rod 34, a tight screw rod 35 and a tight nut 36. There are multiple tight rods 34, which are fixedly mounted on the side of the outer tube 3 away from the fixed tube 2; there are multiple tight screw rods 35, the number of which is the same as the number of the tight rods 34, and one end of each of the tight screw rods 35 is fixedly connected to the end of each of the tight rods 34 away from the outer tube 3.

[0044] A plurality of tight holes 11 are also provided on the top of the CNC lathe 1, and the tight holes 11 cooperate with the tight rods 34, so that the tight rods 34 and the tight screws 35 can penetrate into the interior of the CNC lathe 1 along the tight holes 11. A plurality of tight nuts 36 are provided, and the number of the tight nuts 36 is the same as the number of the tight screws 35, and the tight nuts 36 are threadedly connected with the tight screws 35 respectively.

[0045] By passing the tightening screws 35 on the tightening rods 34 into the interior of the CNC lathe 1 along the tightening holes 11, and then screwing the tightening nuts 36 into the tightening screws 35 respectively, it is convenient to firmly install the tightening rods 34 on the top of the CNC lathe 1, thereby not only firmly installing the outer cylinder 3 on the CNC lathe 1, but also making the air inlet ring sleeve 33 and the CNC lathe 1 fit more closely.

[0046] Better, refer to Figure 2 and Figure 6 In this embodiment, a filter assembly is further provided on the side of the fixed cylinder 2 facing away from the outer cylinder 3, and the filter assembly can perform secondary filtration on the filtered oil mist air to obtain cleaner air.

[0047] Specifically, the filter assembly includes an annular base 7, an inner net cylinder 72, an annular filter element 73, an outer net cylinder 74 and a top cover 75. The annular base 7 is an oblate cylindrical structure, with both ends of the annular base 7 connected, and one side of the annular base 7 is fixedly mounted on the side of the fixed cylinder 2 away from the outer cylinder 3, so as to be sleeved on the drive motor 23; and an annular groove 71 is provided on the side of the annular base 7 away from the fixed cylinder 2, and the inner net cylinder 72 is fixedly sleeved in the annular groove 71; the annular filter element 73 is fixedly sleeved on the outer side of the inner net cylinder 72, and the annular filter element 73 is a filter cotton to filter a small amount of oil mist in the air.

[0048] One end of the outer net tube 74 is installed in the annular groove 71, and the outer net tube 74 is sleeved and covered on the outer side wall of the annular filter element 73; the top cover 75 is fixedly installed on the top of the outer net tube 74 to seal the top of the outer net tube 74. At the same time, the outer sides of the outer net tube 74 and the inner net tube 72 are provided with a plurality of exhaust holes, which facilitate the circulation of air.

[0049] When the filtered air enters the inner side of the annular base 7 along the fixed cylinder 2, the filtered air enters the annular filter element 73 along the exhaust holes of the inner mesh cylinder 72. The annular filter element 73 performs secondary filtration on a small amount of oil mist in the air to obtain cleaner air. The clean air is then uniformly returned to the workshop along the exhaust holes of the outer mesh cylinder 74, thereby achieving a secondary filtration effect on the filtered air.

[0050] The implementation principle of an oil mist collection and treatment device dedicated to a CNC lathe in an embodiment of the present application is as follows: when the oil mist fume generated in the CNC lathe 1 is collected and treated, the drive motor 23 on the carrier 21 is started, and the output end of the drive motor 23 drives the turntable 4 to rotate, and the turntable 4 simultaneously drives the hub 5 and the impeller 6 to rotate in the outer cylinder 3, so that a negative pressure is generated inside the outer cylinder 3, so that the oil mist fume generated in the CNC lathe 1 is sucked into the air inlet ring sleeve 33 along the collection port, and then sucked into the inside of the hub 5 along the air inlet hole 31, and then the rotating impeller 6 collides with the oil mist fume at high speed, so that the filter layer 52 on the inner side of the hub 5 accelerates the fusion and filtration of the oil mist fume and filters out solid particles.

[0051] The filtered air enters the annular filter element 73 along the exhaust holes of the inner mesh tube 72, and the annular filter element 73 performs secondary filtering on a small amount of oil mist in the air to obtain cleaner air, and the clean air is uniformly returned to the workshop along the exhaust holes of the outer mesh tube 74; at the same time, the rotating hub 5 splashes the filtered oil out of the inner side of the outer tube 3 along the centrifugal holes 51 through centrifugal force, so that the oil flows into the collecting ring sleeve 11 along the air inlet holes 31 and the air inlet ring sleeve 33 at the bottom of the outer tube 3, and finally flows back to the interior of the CNC lathe 1 along the collecting ring sleeve 11, so as to facilitate the recycling or centralized collection of the oil, thereby completing the collection and filtering process of the oil mist and fume and the recovery process of the clean oil.

[0052] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A special oil mist collection and treatment device for CNC lathes, characterized in that: The invention comprises a fixed cylinder (2) and an outer cylinder (3) arranged on one side of the fixed cylinder (2); a rotating disk (4) is rotatably mounted on the fixed cylinder (2) through a driving mechanism; a wheel hub (5) located inside the outer cylinder (3) is arranged on one side of the rotating disk (4); a plurality of centrifugal holes (51) are opened on the surrounding side walls of the wheel hub (5); and a filter layer (52) is arranged on the inner side wall of the wheel hub (5); an impeller (6) abutting against the inner side of the wheel hub (5) is also arranged on one side of the rotating disk (4); and an air inlet of the outer cylinder (3) is also arranged at a collecting port on the top of a numerically controlled lathe (1) through a fastening mechanism.

2. The oil mist collection and treatment device for CNC lathe according to claim 1 is characterized in that: The driving mechanism comprises a carrier frame (21) arranged inside the fixed cylinder (2); a driving motor (23) is arranged on one side of the carrier frame (21) via a locking assembly; an output end of the driving motor (23) is connected to one side of the turntable (4); and a reinforcement assembly is also arranged between the fixed cylinder (2) and the carrier frame (21).

3. The oil mist collection and treatment device for CNC lathe according to claim 2 is characterized in that: The locking assembly comprises a plurality of locking bolts (25) and a plurality of locking nuts (26); a plurality of bearing holes (22) are provided on the bearing frame (21); a plurality of locking holes (24) corresponding to the bearing holes (22) are provided on the outer side of the driving motor (23); the locking bolts (25) respectively cooperate with the bearing holes (22) and the locking holes (24), and the locking bolts (25) are threadedly connected with the locking nuts (26).

4. The oil mist collection and treatment device for CNC lathe according to claim 2 is characterized in that: The reinforcement assembly comprises a plurality of reinforcement rods (27), one end of each of the reinforcement rods (27) is respectively connected to the inner side of the fixing tube (2), and the other end is respectively connected to one side of the support frame (21), and a plurality of reinforcement ring rods (28) are arranged between the plurality of reinforcement rods (27).

5. The oil mist collection and treatment device for CNC lathe according to claim 1 is characterized in that: A buckle assembly is symmetrically arranged between the outer side of the outer tube (3) and the outer side of the fixed tube (2), and the buckle assembly includes a lock buckle (32) arranged on the outer side wall of the outer tube (3), and a clip (29) engaged with the lock buckle (32) is arranged on the outer side wall of the fixed tube (2).

6. The oil mist collection and treatment device for CNC lathe according to claim 1 is characterized in that: A filter assembly is also provided on the side of the fixed cylinder (2) facing away from the outer cylinder (3), and the filter assembly is used for secondary filtering of the oil mist.

7. The oil mist collection and treatment device for CNC lathe according to claim 6 is characterized in that: The filter assembly comprises an annular base (7) arranged on the side of the fixed cylinder (2) facing away from the outer cylinder (3); an annular groove (71) is provided on the side of the annular base (7) facing away from the fixed cylinder (2); an inner net cylinder (72) is arranged in the annular groove (71); an annular filter element (73) is sleeved on the outer side of the inner net cylinder (72); an outer net cylinder (74) covering the annular filter element (73) is also arranged in the annular groove (71); and a top cover (75) is provided on the side of the outer net cylinder (74) facing away from the annular base (7).

8. The oil mist collection and treatment device for CNC lathe according to claim 1 is characterized in that: The fastening mechanism comprises an air inlet ring sleeve (33) arranged on the side of the outer cylinder (3) facing away from the fixed cylinder (2), the air inlet ring sleeve (33) is tightly matched with the top collecting port of the CNC lathe (1), and a plurality of air inlet holes (31) are also opened on the side of the outer cylinder (3) facing away from the fixed cylinder (2), and the plurality of air inlet holes (31) are all located inside the air inlet ring sleeve (33), and a tight assembly is also arranged between the outer cylinder (3) and the CNC lathe (1).

9. The oil mist collection and treatment device for CNC lathe according to claim 8 is characterized in that: The tightening assembly comprises a plurality of tightening rods (34) arranged on the side of the outer cylinder (3) away from the fixed cylinder (2), one end of each of the plurality of tightening rods (34) is provided with a tightening screw (35), a plurality of tightening holes (11) matching with the tightening rods (34) are opened on the top of the CNC lathe (1), and a plurality of tightening nuts (36) are also threadedly connected to the plurality of tightening screws (35).

10. The oil mist collection and treatment device for CNC lathe according to claim 8, characterized in that: The inner side of the bottom of the outer cylinder (3) is in the form of an arc-shaped structure that bulges downward, and the arc-shaped structure matches the air inlet hole (31).

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