Hydraulic rotary simultaneous separation and purification device for machining cutting fluid

Abstract

The application discloses a hydraulic rotation synchronous separation and purification device for cutting fluid used for workpiece machining, which comprises an outer cylinder, a cyclone and a vortex separation assembly, the cyclone is axially fixed in the inner cavity of the outer cylinder by an oil outlet end fixed plate and a liquid outlet end fixed plate respectively from top to bottom, the vortex separation assembly is arranged below the cyclone, the inner cavity of the outer cylinder is divided into an oil discharge cavity, a liquid inlet cavity, a water discharge cavity and a chip collection cavity by the oil outlet end fixed plate, the liquid outlet end fixed plate and the vortex separation assembly, the vortex separation assembly comprises a cylindrical flow guide cylinder and a plurality of vortex blades which are spaced from each other, adjacent vortex blades are separated in the axial direction and are projected in the circumferential direction, the liquid outlet end of the cyclone is located in the inner hole of the flow guide cylinder, the vortex blades are curved surfaces which are inclined from bottom to top and have convex surfaces facing outward, and the extending direction of the vortex blades is arranged at an acute angle with the circumferential tangent, the water discharge cavity comprises a cylindrical cavity with the same diameter as the liquid inlet cavity and a conical transition cavity which is gradually expanded in the inner diameter from top to bottom, and the conical transition cavity is connected with the chip collection cavity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial wastewater purification and separation, and in particular to a hydraulic rotation synchronous separation and purification device for cutting fluid used in workpiece machining. BACKGROUND

[0002] In the process of machining aluminum and aluminum alloy castings and profiled parts, such as CNC machining centers, lathes, milling machines, etc., cutting fluid plays an indispensable role. The base oil and additives of high-performance cutting fluid, especially emulsion and semi-synthetic fluid, are expensive, and the procurement cost constitutes a direct operating expense. At the same time, during the machining process, cutting fluid performance gradually deteriorates due to the mixing of leaked lubricating oil from the machine tool hydraulic system and guide rails, aluminum metal debris (metal chips), and grinding dust, etc., and eventually becomes waste liquid that must be discharged. However, waste cutting fluid is classified as hazardous waste, and its treatment must be carried out by qualified environmental protection units, which has a high processing unit price. For workpiece machining enterprises that generate a large amount of waste liquid, this annual expenditure constitutes a heavy operating cost. Therefore, many enterprises want to recycle cutting fluid through purification and recycling systems to achieve recycling.

[0003] A patent document with the application publication number CN120504449A discloses a cooling liquid wastewater regeneration treatment system for metal machining, which includes a treatment box, a guide rod vertically installed at the bottom of the treatment box, an oil collecting bucket connected to the inner side of the upper part of the treatment box through a driving element, exchange holes uniformly provided on the outer side of the pipe body, a hydrophilic and oleophobic film provided in the exchange holes, and a plurality of cotton fiber balls placed at the bottom of the pipe body; the top end of the guide rod is annularly arrayed with multiple sets of regulation and control structures, which can clean and control the hydrophilic and oleophobic film in the pipe body. This scheme uses the intermittently raised oil collecting bucket to move on the surface of the wastewater, which can collect the oil on the surface, and the oil-water mixture entering the pipe body can be separated by the hydrophilic and oleophobic film, and the surface of the hydrophilic and oleophobic film can be cleaned during the separation process to prevent particles from clogging the hydrophilic and oleophobic film.

[0004] Although this scheme can achieve a certain floating oil removal effect, it relies on the hydrophilic and oleophobic film as the core separation element, which is easily clogged and contaminated by solid particles in the cutting fluid during actual operation, and needs to be cleaned frequently or even replaced, resulting in high consumption and high operation and maintenance cost, and inconvenient operation. At the same time, this scheme has poor separation effect on a large amount of solid impurities suspended in the liquid, and the cleanliness of the treated liquid is difficult to meet the high requirements of aluminum precision machining.

[0005] For example, the patent document two with the authorization announcement number CN212040978U discloses a cutting fluid iron filings separation device, which comprises a plurality of sequentially arranged liquid storage pools, a sliding rail is arranged above the plurality of liquid storage pools, a telescopic rod is slidably arranged on the sliding rail, a hollow rotating shaft is rotationally connected to the telescopic rod, rotating blades are arranged on the outer surface of the hollow rotating shaft, an electromagnet generator is arranged in the hollow rotating shaft, the electromagnet generator is connected to the rotating blades, and the electromagnet generator is connected to a controller; a scrap collecting pool is arranged on one side of the plurality of liquid storage pools. The electromagnet generator is arranged, a magnetic field is generated by the electromagnet generator to adsorb iron filings in the cutting fluid, and then the iron filings on the rotating blades are shaken off by rotating the rotating blades.

[0006] The scheme has a certain effect on the removal of magnetic iron filings, but the core technical principle determines that the electromagnet is only effective for ferromagnetic metal impurities, and completely ineffective for the main impurities generated during workpiece machining, i.e., non-magnetic aluminum metal scraps, the separation effect has great limitations, and the core problem of metal scrap residue leading to cutting fluid deterioration cannot be solved. SUMMARY

[0007] In order to solve the problems existing in the purification and recycling of cutting fluid for workpiece machining, the application provides a cutting fluid purification hydraulic rotary separator with better purification and separation effect.

[0008] The technical scheme adopted by the application to solve the above technical problems is: a cutting fluid hydraulic rotary synchronous separation and purification device for workpiece machining, comprising an outer cylinder, a cyclone and a vortex separation assembly, the cyclone is axially fixed in the inner cavity of the outer cylinder by an oil outlet end fixed plate and a liquid outlet end fixed plate respectively above and below; the vortex separation assembly is arranged below the cyclone.

[0009] The inner cavity of the outer cylinder is divided into an oil discharge cavity, a liquid inlet cavity, a water discharge cavity and a scrap collecting cavity by the oil outlet end fixed plate, the liquid outlet end fixed plate and the vortex separation assembly.

[0010] The vortex separation assembly comprises a cylindrical flow guide cylinder and a plurality of vortex blades spaced from each other; adjacent vortex blades are separated in the axial direction and projected in the circumferential direction; the outer end of each vortex blade is fixed to the inner wall of the outer cylinder, and the inner end is fixed to the flow guide cylinder; the liquid outlet end of the cyclone is located in the inner hole of the flow guide cylinder; the vortex blade is a curved surface inclined from bottom to top and convex outward, and the extension direction is arranged at an acute angle with the circumferential tangent;

[0011] The water discharge cavity comprises a cylindrical cavity with the same diameter as the liquid inlet cavity and a conical transition cavity with gradually increasing inner diameter from top to bottom, and the conical transition cavity is connected with the scrap collecting cavity.

[0012] The outer peripheral wall of the outer cylinder is provided with a liquid inlet, a residue discharge port and a liquid outlet, the top is provided with an oil discharge port, and the bottom is provided with an aluminum discharge port; the liquid inlet is located in the middle of the liquid inlet cavity; the residue discharge port is located at the bottom of the liquid inlet cavity close to the liquid outlet fixed plate; and the liquid outlet is located at the cylindrical cavity of the drainage cavity.

[0013] The preferred technical solution adopted by the application to solve the above technical problems is that the rotational flow part includes a rotating head, a cylindrical part, a large taper part, a small taper part and a straight pipe part, and the outer periphery of the cylindrical part is provided with a plurality of tangential liquid inlets.

[0014] The rotating head is provided with an oil discharge channel, the end of the oil discharge channel is tapered, the cylindrical part is provided with an annular flow guide part, and the bottom wall of the rotating head in the annular flow guide part is provided with an oil outlet hole which is connected to the oil discharge channel.

[0015] The preferred technical solution adopted by the application to solve the above technical problems is that the outer cylinder sequentially includes an upper head, a straight cylinder part and a lower head from top to bottom, the upper head and the lower head are connected to the end of the straight cylinder part through a clamp and an annular sealing ring, and the scroll separation assembly is located in the lower head and separates the inner cavity of the lower head into upper and lower parts.

[0016] The two ends of the straight cylinder part are respectively provided with annular oil outlet end fixed plates and liquid outlet end fixed plates, the rotating head penetrates through the oil outlet end fixed plate and is sealingly fixed, and the straight pipe part penetrates through the liquid outlet end fixed plate and is sealingly fixed.

[0017] The preferred technical solution adopted by the application to solve the above technical problems is that the tapered transition cavity is provided with a longitudinal flow guide grid.

[0018] The preferred technical solution adopted by the application to solve the above technical problems is that the flow guide wall of the longitudinal flow guide grid is inclined and consistent with the slope direction of the tapered transition cavity.

[0019] The preferred technical solution adopted by the application to solve the above technical problems is that the water power rotary synchronous separation and purification device for cutting fluid used for workpiece machining includes an outer cylinder, a rotational flow part and a scroll separation assembly, the rotational flow part is axially fixed in the inner cavity of the outer cylinder by oil outlet end fixed plates and liquid outlet end fixed plates respectively at the top and bottom, and the scroll separation assembly is arranged below the rotational flow part.

[0020] The inner cavity of the outer cylinder is divided into an oil discharge cavity, a liquid inlet cavity, a drainage cavity and a chip collection cavity by the oil outlet end fixed plate, the liquid outlet end fixed plate and the scroll separation assembly.

[0021] The rotational flow part includes a rotating head, a cylindrical part, a large taper part, a small taper part and a straight pipe part, and the outer periphery of the cylindrical part is provided with a plurality of tangential liquid inlets.

[0022] The rotating head penetrates through the oil outlet end fixed plate and is sealed and fixed, and the straight pipe part penetrates through the liquid outlet end fixed plate and is sealed and fixed;

[0023] The vortex separation assembly comprises a cylindrical flow guide cylinder and a plurality of mutually spaced vortex vanes; adjacent vortex vanes are separated in the axial direction and are projected in the circumferential direction to be superimposed; the outer end of each vortex vane is fixed to the inner wall of the outer cylinder, and the inner end is fixed to the flow guide cylinder; the liquid outlet end of the vortex flow is located in the inner hole of the flow guide cylinder; the vortex vane is a curved surface inclined from bottom to top and convex outward, and the extension direction is arranged at an acute angle with the circumferential tangent;

[0024] The outer wall of the outer cylinder is provided with a liquid inlet, a residue discharge port and a liquid outlet, the top is provided with an oil discharge port, and the bottom is provided with an aluminum discharge port; the liquid inlet is located in the middle part of the liquid inlet cavity; the residue discharge port is located at the bottom of the liquid inlet cavity close to the liquid outlet end fixed plate; the liquid outlet is located at the drainage cavity.

[0025] The preferred technical solution adopted by the present application to solve the above technical problems is that the drainage cavity comprises a cylindrical cavity with the same diameter as the liquid inlet cavity and a conical transition cavity with gradually increasing inner diameter from top to bottom, the conical transition cavity is connected with the debris collecting cavity, and the liquid outlet is located at the cylindrical cavity of the drainage cavity.

[0026] The preferred technical solution adopted by the present application to solve the above technical problems is that a longitudinal flow guide grid is arranged in the conical transition cavity, and the flow guide wall of the longitudinal flow guide grid is inclined and consistent with the slope direction of the conical transition cavity.

[0027] The preferred technical solution adopted by the present application to solve the above technical problems is that the outer cylinder comprises an upper head, a straight cylinder part and a lower head from top to bottom, the upper head and the lower head are connected with the end part of the straight cylinder part through the clamp element and the annular sealing ring, and the vortex separation assembly is located in the lower head and separates the inner cavity of the lower head into upper and lower parts.

[0028] The preferred technical solution adopted by the present application to solve the above technical problems is that the rotating head is provided with an oil discharge channel, the end of the oil discharge channel is conical, the cylindrical part is provided with an annular flow guide part, and the bottom wall of the rotating head in the annular flow guide part is provided with an oil outlet hole connected with the oil discharge channel.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] Firstly, the liquid flow after deoiling by the cyclone, whose main components are water and metal scraps, is spun out from the liquid outlet of the cyclone at high speed and enters the guide cylinder of the vortex separation assembly. The guide cylinder further guides the fluid from the liquid outlet in the circumferential direction to keep it in a rotating state while reducing the speed. After the speed reduction, the centrifugal force on the metal scraps carried by the liquid flow is weakened, and the metal scraps begin to settle under the action of gravity. The mixed liquid of the other part of water and smaller metal scraps is further lifted to the position of the vortex blade. Due to the reverse inclined curved blade, the spiral direction is equivalent to the rotation path of the mixed liquid, forming a downward guide channel. It guides the liquid flow in a high-speed rotating state, reduces the speed, and guides the particles and metal scraps that migrate to the cylinder wall due to the centrifugal force greater than the liquid phase into the debris collection chamber, thereby more efficiently synchronously separating, cutting fluid, oil, and metal scraps.

[0031] Secondly, the diameter of the debris collection chamber is greater than that of the upper drainage chamber. The large-diameter chamber causes the flow rate of the incoming fluid to drop suddenly, creating ideal conditions for the final settlement of metal scraps. The metal scraps are collected here, and the bottom aluminum discharge valve can be opened at regular intervals to discharge.

[0032] Thirdly, the design of the conical transition chamber not only smoothly transitions between the two functional chambers, but also physically blocks the metal scraps that attempt to float upwards, forcing them to slide downwards, further enhancing the separation effect. The purified cutting fluid is returned to the cutting fluid system from the liquid outlet located on the side of the cylindrical chamber, realizing recycling. In addition, the large-diameter chamber has high pressure and low flow rate, while the small-diameter chamber has low pressure and high flow rate, facilitating the migration of cutting fluid to the drainage chamber and the overflow from the drainage port. BRIEF DESCRIPTION OF DRAWINGS

[0033] The application will be described in further detail below in conjunction with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be considered as limiting the scope of the application. In addition, unless specifically indicated, the drawings only schematically represent the composition or structure of the described objects and can include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0034] Figure 1 Schematic view of the hydraulic rotary synchronous separation and purification device for cutting fluid for workpiece machining;

[0035] Figure 2 Cross-sectional view of the hydraulic rotary synchronous separation and purification device for cutting fluid for workpiece machining;

[0036] Figure 3 Schematic view of the hydraulic rotary synchronous separation and purification device for cutting fluid for workpiece machining Figure 2 Local enlarged view at A Figure 1 ;

[0037] Figure 4 Hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining Figure 2 Partial enlarged view at B in Fig. 1 Figure 2

[0038] Figure 5 Exploded view of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining

[0039] Figure 6 Schematic view of vortex separation assembly of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining Figure 1

[0040] Figure 7 Schematic view of vortex separation assembly of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining Figure 2

[0041] Figure 8 Schematic view of vortex separation assembly of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining Figure 3

[0042] Figure 9 Schematic view of vortex separation assembly of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining Figure 4

[0043] Figure 10 Schematic view of improved conical transition chamber structure of hydrodynamic rotating synchronous separation and purification device for cutting fluid used in workpiece machining

[0044] Reference signs:

[0045] Outer cylinder 1; cyclone 2; vortex separation assembly 3; oil outlet end fixed plate 4; liquid outlet end fixed plate 5; oil discharge chamber 100; liquid inlet chamber 200; water discharge chamber 300; chip collection chamber 400; flow guide cylinder 31; vortex blade 32; liquid inlet 6; slag discharge port 7; liquid outlet 8; oil discharge port 9; aluminum discharge port 10; cylindrical chamber 12; conical transition chamber 11; rotating head 21; cylindrical part 22; large conical part 23; small conical part 24; straight pipe part 25; liquid inlet 13; oil discharge hole 14; annular flow guide part 15; upper head 101; straight cylinder part 102; lower head 103; clamp part 16; annular sealing ring 17; longitudinal flow guide grid 18. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present application will be described in detail below with reference to the attached drawings. It will be appreciated by those skilled in the art that the description is merely descriptive, exemplary, and should not be interpreted as limiting the scope of protection of the present application.

[0047] ​​​​​It should be noted that like reference numerals refer to like elements throughout the several views of the drawings and that, as such, when a part after its initial definition is referred to, no further defining or explaining is necessary in connection with that part in the following views.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the present application is used, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] As shown in Figures 1-2 The embodiment provides a hydraulic rotary synchronous separation and purification device for cutting fluid used for workpiece machining, which comprises an outer cylinder 1, a cyclone 2 and a vortex separation assembly 3. The cyclone 2 is axially fixed in the inner cavity of the outer cylinder 1 by an oil outlet end fixed plate 4 and a liquid outlet end fixed plate 5 respectively at the upper and lower parts of the cyclone 2. The vortex separation assembly 3 is arranged below the cyclone 2. The inner cavity of the outer cylinder 1 is divided into an oil discharge cavity 100, a liquid inlet cavity 200, a water discharge cavity 300 and a chip collection cavity 400 by the oil outlet end fixed plate 4, the liquid outlet end fixed plate 5 and the vortex separation assembly 3.

[0050] As shown in Figure 4 , The vortex separation assembly 3 comprises a cylindrical flow guide cylinder 31 and a plurality of vortex blades 32 which are spaced from each other, as shown in 6 The outer ends of the vortex blades 32 are fixed to the inner wall of the outer cylinder 1, and the inner ends are fixed to the flow guide cylinder 31. The liquid outlet end of the cyclone 2 is located in the inner hole of the flow guide cylinder 31. The vortex blades 32 are curved surfaces which are inclined from bottom to top and have convex surfaces facing outward, and the extension direction is arranged at an acute angle with the circumferential tangent.

[0051] The outer peripheral wall of the outer cylinder 1 is provided with a liquid inlet 6, a residue discharge port 7 and a liquid outlet 8, the top is provided with an oil discharge port 9, and the bottom is provided with an aluminum discharge port 10. The liquid inlet 6 is located in the middle part of the liquid inlet cavity 200. The residue discharge port 7 is located at the bottom of the liquid inlet cavity 200 near the liquid outlet end fixed plate 5. The liquid outlet 8 is located at the water discharge cavity 300.

[0052] The contaminated cutting fluid to be treated is injected into the liquid inlet cavity 200 from the liquid inlet 6 in a tangential direction to form a preliminary rotation. Under the action of centrifugal force, large particles and high-density impurities such as large metal chips and abrasive particles are rapidly thrown to the cylinder wall and spiral down along the wall, and finally discharged from the residue discharge port 7 located at the bottom of the liquid inlet cavity 200, realizing the first rough separation. The remaining mixed liquid of cutting fluid, oil and small metal chips is then guided to the tangential liquid inlet 13 of the upper segment of the cyclone 2 as a light phase.

[0053] The mixed liquid enters the cyclone 2 and is accelerated to form a high-speed strong cyclone. In the strong centrifugal field, the heavy components, i.e. cutting fluid and metal chips, are thrown to the conical pipe wall of the cyclone 2 and move downward. The light components, i.e. oil and air, form a low pressure vortex core in the central axial area. The vortex core carries the oil droplets upward under the action of pressure difference, and finally overflows from the oil outlet 9 at the top to realize oil-water separation.

[0054] After the oil removal by the cyclone 2, the liquid stream mainly composed of cutting fluid and metal chips is spun out from the liquid outlet end of the cyclone 2 at high speed, enters the guide cylinder 31 of the vortex separation assembly 3, and the guide cylinder 31 further guides the fluid from the liquid outlet end in the circumferential direction to keep the fluid in a cyclone state and reduce the speed. After the speed reduction of the liquid stream, the centrifugal force on the metal chips carried by the liquid stream is weakened, and the metal chips begin to settle under the action of gravity. Another part of the mixed liquid of cutting fluid and smaller metal chips is further lifted to the position of the vortex blade 32. Since the spiral direction of the reverse inclined curved blade is equivalent to the rotation path of the mixed liquid, a downward guide channel is formed, which guides the liquid stream in a high-speed cyclone state, reduces the speed, and guides the particles and metal chips that migrate to the cylinder wall due to the centrifugal force being greater than the liquid phase to the downward into the chip collection cavity 400.

[0055] As shown in Figure 4 , the chip collection cavity 400 has a larger diameter than the upper water drainage cavity 300. The large-diameter cavity causes the flow rate of the entering fluid to suddenly decrease, which creates ideal conditions for the final settlement of the metal chips. The metal chips are collected here, and the bottom aluminum discharge port 10 valve can be opened at regular intervals to discharge.

[0056] Preferably, as shown in Figure 4 , the water drainage cavity 300 includes, from top to bottom, a cylindrical cavity 12 with the same diameter as the liquid inlet cavity 200 and a conical transition cavity 11 with a gradually increasing inner diameter from top to bottom. The conical transition cavity 11 is connected to the chip collection cavity 400, and the liquid outlet 8 is located at the cylindrical cavity 12 of the water drainage cavity 300.

[0057] The design of the conical transition cavity 11 not only smoothly transitions between the two functional cavities, but also physically blocks the metal chips that attempt to float upward, forcing them to slide downward, further enhancing the separation effect. The purified water is returned to the cutting fluid system from the liquid outlet 8 located on the side of the cylindrical cavity 12, achieving recycling. In addition, the large-diameter cavity has high pressure and low flow rate, and the small-diameter cavity has low pressure and high flow rate, which facilitates the migration of cutting fluid to the water drainage cavity 300 and the overflow from the drainage port.

[0058] It should be noted that the cyclone 2 can use the general cyclone 2 for water-oil separation in the prior art. In this embodiment, a preferred technical solution is adopted.

[0059] As shown in Figure 2 , 3As shown, the cyclone 2 includes a rotating head 21, a cylindrical part 22, a large taper part 23, a small taper part 24, and a straight pipe part 25. The outer periphery of the cylindrical part 22 is provided with a plurality of tangential liquid inlets 13. The rotating head 21 is internally provided with an oil discharge channel 14, the end of which is tapered, and the cylindrical part 22 is internally provided with an annular flow guide part 15, the bottom wall of the rotating head 21 in the annular flow guide part 15 is provided with an oil outlet hole which is in butt joint with the oil discharge channel 14. The end of the straight pipe part 25 extends into the flow guide cylinder 31 and the lowest position does not exceed the flow guide cylinder 31.

[0060] The rotating head 21 ensures that the fluid can form a strong cyclone smoothly and efficiently. The taper angles of the large taper part 23 and the small taper part 24 are designed to cause the axial pressure change of the centrifugal force field, and the separation efficiency is higher. The tapered oil discharge channel 14 in the rotating head 21 helps to stabilize the central low-pressure oil core, and the annular flow guide part 15 can regularize the flow field, ensuring that the oil phase is concentrated and guided to the oil outlet hole, thereby improving the purity and recovery efficiency of the overflow oil.

[0061] As shown in Figure 1 , 5 , the outer cylinder 1 sequentially includes an upper head 101, a straight cylinder part 102, and a lower head 103 from top to bottom. The upper head 101 and the lower head 103 are connected with the end of the straight cylinder part 102 through the clamp member 16 and the annular sealing ring 17. The vortex separation assembly 3 is located in the lower head 103 and separates the inner cavity of the lower head 103 into upper and lower parts. The straight cylinder part 102 is respectively provided with an annular oil outlet end fixed plate 4 and a liquid outlet end fixed plate 5 at both ends. The rotating head 21 penetrates through the oil outlet end fixed plate 4 and is sealingly fixed, and the straight pipe part 25 penetrates through the liquid outlet end fixed plate 5 and is sealingly fixed.

[0062] The outer cylinder 1 adopts the modular design of the upper head 101, the straight cylinder part 102, and the lower head 103, and is connected through the clamp member 16. This structure greatly facilitates the installation, internal cleaning, and daily maintenance of the equipment. By loosening the clamp, the head can be opened, and the internal core components such as the cyclone 2 and the vortex blade 32 can be repaired or replaced, solving the pain point of difficult maintenance of traditional integrated equipment.

[0063] As shown in Figure 10 , the conical transition chamber 11 is internally provided with a longitudinal flow guide grid 18. It can break up large-scale vortices that may be formed in the liquid flow, divide the rotating flow into multiple small streams, make the flow field more stable and smooth, thereby reducing the disturbance to the already settled metal chips and ensuring the stability of the separation effect.

[0064] Further, the flow guide wall of the longitudinal flow guide grid 18 is inclined and consistent with the slope direction of the conical transition chamber 11. It not only stabilizes the flow in the longitudinal direction, but also provides a guide slope in the radial direction which is consistent with the direction of the metal chip sedimentation, cooperating with the vortex blade 32 to further improve the separation efficiency of the metal chips and guide the metal chips to smoothly slide into the aluminum collection cavity.

[0065] The hydraulic rotation synchronous separation and purification device for cutting fluid for workpiece machining is introduced by using specific examples in the present application. The above example is only used to help understand the present application and the core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining, characterized in that: It includes an outer cylinder, a cyclone separator, and a vortex separator assembly. The cyclone separator is axially fixed in the inner cavity of the outer cylinder by an oil outlet fixing plate and a liquid outlet fixing plate, respectively. The vortex separator assembly is located below the cyclone separator. The inner cavity of the outer cylinder is divided into an oil discharge chamber, a liquid inlet chamber, a water discharge chamber, and a chip collection chamber by the oil outlet fixing plate, the liquid outlet fixing plate, and the vortex separation assembly. The vortex separation assembly includes a cylindrical guide tube and multiple spaced-apart vortex blades; adjacent vortex blades are separated axially and projected onto each other in the circumferential direction, with the outer end of each vortex blade fixed to the inner wall of the outer tube and the inner end fixed to the guide tube; the liquid outlet of the vortex is located in the inner hole of the guide tube; the vortex blade is a curved surface that is inclined from bottom to top and has its convex surface facing outward, and its extension direction is set at an acute angle to the circumferential tangent; The spiral direction of the vortex blades, which are tilted in the opposite direction, is similar to the rotation path of the mixture, forming a downward guiding channel. This channel guides and slows down the high-speed swirling liquid outflow, and guides particles and metal chips that migrate to the cylinder wall due to centrifugal force because their specific gravity is greater than that of the liquid phase into the chip collection chamber. The drainage chamber, from top to bottom, includes a cylindrical cavity with the same diameter as the liquid inlet cavity and a conical transition cavity with an inner diameter that gradually increases from top to bottom. The conical transition cavity is connected to the chip collection cavity. The outer cylinder has an inlet, a slag outlet, and an outlet on its outer peripheral wall, an oil outlet at the top, and an aluminum outlet at the bottom. The inlet is located in the middle of the inlet chamber. The slag outlet is located at the bottom of the inlet chamber near the outlet end fixing plate. The outlet is located in the cylindrical cavity of the drain chamber.

2. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 1, characterized in that: The cyclone includes a swirl head, a cylindrical part, a large conical part, a small conical part, and a straight tube part. The outer periphery of the cylindrical part is provided with multiple tangential liquid inlets. The swirl head is provided with an oil drain channel, the end of which is tapered. The cylindrical part is provided with an annular guide section, and the bottom wall of the swirl head within the annular guide section is provided with an oil outlet hole that connects with the oil drain channel.

3. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 2, characterized in that: The outer cylinder comprises, from top to bottom, an upper end cap, a straight cylinder section, and a lower end cap. Both the upper and lower end caps are connected to the end of the straight cylinder section via clamps and annular sealing rings. The vortex separation assembly is located inside the lower end cap and divides the inner cavity of the lower end cap into upper and lower sections. The straight tube section has an annular oil outlet fixing plate and a liquid outlet fixing plate at both ends. The swivel head passes through the oil outlet fixing plate and is sealed and fixed. The straight tube section passes through the liquid outlet fixing plate and is sealed and fixed.

4. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 1, characterized in that: The conical transition cavity is equipped with a longitudinal flow guide grille.

5. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 4, characterized in that: The guide wall of the longitudinal guide grille is inclined and its slope direction is consistent with that of the conical transition cavity.

6. A hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining, characterized in that: It includes an outer cylinder, a cyclone separator, and a vortex separator assembly. The cyclone separator is axially fixed in the inner cavity of the outer cylinder by an oil outlet fixing plate and a liquid outlet fixing plate, respectively. The vortex separator assembly is located below the cyclone separator. The inner cavity of the outer cylinder is divided into an oil discharge chamber, a liquid inlet chamber, a water discharge chamber, and a chip collection chamber by the oil outlet fixing plate, the liquid outlet fixing plate, and the vortex separation assembly. The cyclone includes a swirl head, a cylindrical part, a large conical part, a small conical part, and a straight tube part. The outer periphery of the cylindrical part is provided with multiple tangential liquid inlets. The swirl head passes through the oil outlet fixing plate and is sealed and fixed, and the straight pipe passes through the liquid outlet fixing plate and is sealed and fixed; The vortex separation assembly includes a cylindrical guide tube and multiple spaced-apart vortex blades; adjacent vortex blades are separated axially and projected onto each other in the circumferential direction; the outer end of each vortex blade is fixed to the inner wall of the outer tube and the inner end is fixed to the guide tube; the liquid outlet of the vortex is located in the inner hole of the guide tube; the vortex blade is a curved surface that is inclined from bottom to top and has a convex surface facing outward, and the extension direction is set at an acute angle to the circumferential tangent; The outer cylinder has an inlet, a slag outlet, and an outlet on its outer peripheral wall, an oil outlet at the top, and an aluminum outlet at the bottom. The inlet is located in the middle of the inlet chamber. The slag outlet is located at the bottom of the inlet chamber near the outlet end fixing plate. The outlet is located in the drain chamber.

7. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 6, characterized in that: The drainage chamber comprises, from top to bottom, a cylindrical cavity with the same diameter as the inlet cavity and a conical transition cavity with an inner diameter that gradually increases from top to bottom. The conical transition cavity is connected to the chip collection cavity, and the outlet is located at the cylindrical cavity of the drainage chamber.

8. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 7, characterized in that: The conical transition cavity is provided with a longitudinal flow guide grid, and the flow guide wall of the longitudinal flow guide grid is inclined and consistent with the slope of the conical transition cavity.

9. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 7, characterized in that: The outer cylinder comprises, from top to bottom, an upper end cap, a straight cylinder section, and a lower end cap. Both the upper and lower end caps are connected to the end of the straight cylinder section via clamps and annular sealing rings. The vortex separation assembly is located inside the lower end cap and divides the inner cavity of the lower end cap into upper and lower sections.

10. The hydraulic rotary synchronous separation and purification device for cutting fluid used in workpiece machining according to claim 9, characterized in that: The swirl head is provided with an oil drain channel, the end of which is tapered. The cylindrical part is provided with an annular guide section, and the bottom wall of the swirl head within the annular guide section is provided with an oil outlet hole that connects with the oil drain channel.

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