Cutting fluid recovery equipment

Abstract

The cutting fluid recycling equipment comprises a flushing pool, a first water pump and an oil-water separation box, the flushing pool comprises a pool body and a filtering assembly, a sinking groove is formed in the bottom of the pool body, the filtering assembly is arranged at an opening of the sinking groove, the first water pump is arranged in the sinking groove, and the oil-water separation box comprises a box body. A first-stage separation chamber, a second-stage separation chamber and a third-stage separation chamber are sequentially arranged in the box body, the first-stage separation chamber and the second-stage separation chamber are communicated through a first water passing pipe close to the bottom of the box body, the second-stage separation chamber and the third-stage separation chamber are communicated through a second water passing pipe close to the bottom of the box body, and the first-stage separation chamber is communicated with a first water pump through a water pumping pipe. A first collecting opening is formed in the side wall of the first-stage separation chamber, a water outlet is formed in the side wall of the third-stage separation chamber, the position height of the water outlet is lower than that of the first collecting opening, and a filtering material is arranged in the third-stage separation chamber; the filter assembly filters chippings in the waste liquid, the oil-water separation box removes floating oil in the waste liquid step by step, and the separated cutting fluid is higher in quality.

Description

Technical Field

[0001] The invention relates to the technical field of cutting fluid recovery and treatment, and in particular to a cutting fluid recovery device. Background Art

[0002] In order to ensure the cleanliness of the aluminum alloy equipment compartment module of the standard EMU after processing, the product needs to be cleaned after processing. After cleaning the product, waste liquid with debris, oil and cutting fluid is generated. If the waste liquid is not recycled, it will cause environmental pollution and waste of resources. At present, the waste liquid is treated by simple filtering to remove debris and oil, but the effect is poor and the separated cutting fluid is of low quality. Summary of the invention

[0003] The object of the present invention is to provide a cutting fluid recovery device which can better remove debris and oil stains in waste fluid, so as to solve the above-mentioned technical problems in the prior art.

[0004] According to a first aspect of the present invention, there is provided a cutting fluid recovery device, comprising: A flushing pool, comprising a pool body and a filter assembly, wherein a sinking trough is provided at the bottom of the pool body, and the filter assembly is provided at the opening of the sinking trough; a first water pump, which is disposed in the sinking tank; An oil-water separation box comprises a box body, wherein a primary separation chamber, a secondary separation chamber and a tertiary separation chamber are arranged in sequence in the box body, the primary separation chamber and the secondary separation chamber are connected via a first water pipe near the bottom of the box body, the secondary separation chamber and the tertiary separation chamber are connected via a second water pipe near the bottom of the box body, the primary separation chamber is connected to the first water pump via a suction pipe, a first collecting port for discharging floating oil on the liquid surface and positioned higher than the first water pipe is provided on the side wall of the primary separation chamber, a water outlet for discharging water and positioned higher than the second water pipe is provided on the side wall of the tertiary separation chamber, the water outlet is positioned lower than the first collecting port, and filter material is provided in the tertiary separation chamber.

[0005] In one embodiment of the present invention, a water storage tank is further included, and the water storage tank is connected to the water outlet of the three-stage separation chamber through a water diversion pipe.

[0006] In one embodiment of the present invention, the filter assembly includes a filter box, which is detachably disposed in the opening of the sinking trough, and a primary filter screen and a secondary filter screen are disposed in the filter box, and the primary filter screen is disposed above the secondary filter screen; the mesh number of the primary filter screen is smaller than the mesh number of the secondary filter screen; the primary filter screen is rotatably connected to the filter box via a rotating shaft.

[0007] In one embodiment of the present invention, a flow guide assembly located at the water outlet end of the water pumping pipe is provided in the primary separation chamber, and the flow guide assembly includes a shell and a plurality of flow guide plates, and the plurality of flow guide plates are respectively arranged in an inclined manner in the shell and arranged in sequence along the height direction to guide the liquid sent into the shell by the water pumping pipe to flow downward, and the adjacent flow guide plates are arranged at intervals and have opposite inclined directions; The lower end of the guide plate located at the bottom is lower than the first collecting port.

[0008] In one embodiment of the present invention, the water outlet end of the water pumping pipe and the first water pipe are respectively close to opposite sides of the box body; and / or, The first water pipe and the second water pipe are respectively close to two opposite sides of the box body.

[0009] In one embodiment of the present invention, the tube body of the first water pipe extends transversely, and the water inlet end thereof is bent downward to face the bottom of the primary separation chamber, and a distance is left between the first water pipe and the bottom of the primary separation chamber; and / or, The pipe body of the second water pipe extends transversely, and the water inlet end thereof is bent downward toward the bottom of the secondary separation chamber, and a distance is left between the water inlet end and the bottom of the secondary separation chamber.

[0010] In one embodiment of the present invention, a second collecting port is provided on the side wall of the secondary separation chamber for discharging floating oil on the liquid surface and is positioned higher than the second water pipe. The position height of the second collecting port is not higher than the first collecting port and not lower than the water outlet.

[0011] In one embodiment of the present invention, at least one partition is provided in the secondary separation chamber for extending the flow path of the liquid from the first water pipe to the second water pipe, and the partition extends upward from the bottom of the secondary separation chamber, and the top of the partition is located at a height lower than the liquid level in the secondary separation chamber.

[0012] In one embodiment of the present invention, two baffles are provided in the secondary separation chamber, and they are respectively a first baffle and a second baffle. The first baffle and the second baffle are arranged between the first water pipe and the second water pipe at intervals. The first baffle is close to the first water pipe, and the second baffle is close to the second water pipe. The secondary separation chamber has a front wall on the side close to the primary separation chamber and a rear wall on the side close to the tertiary separation chamber. The first partition extends from the front wall to the rear wall of the secondary separation chamber and a gap is left between the first partition and the rear wall of the secondary separation chamber. The second partition extends from the rear wall to the front wall of the secondary separation chamber and a gap is left between the second partition and the front wall of the secondary separation chamber.

[0013] In one embodiment of the present invention, it also includes a control unit and a liquid level sensor, wherein the liquid level sensor is arranged in the sinking tank and is used to send a liquid level signal to the control unit, and the control unit sends a control signal to the first water pump based on the liquid level signal to control the start and stop of the first water pump.

[0014] One beneficial effect of the present invention is that the cutting fluid recovery equipment preliminarily filters out debris in the waste liquid by arranging a filter assembly in the sink tank at the bottom of the flushing tank, and gradually separates the floating oil in the waste liquid through the primary separation chamber, the secondary separation chamber and the tertiary separation chamber arranged in the oil-water separation box, and discharges the floating oil through the first collecting port, and further removes residual impurities in the cutting fluid through the filter material in the tertiary separation chamber, and discharges the cutting fluid through the water outlet, which is convenient for collection and reuse; the oil-water separation box fully removes impurities such as oil stains and residual powder in the waste liquid, and the treatment effect is good, so that the cutting fluid finally separated is of higher quality and can meet the standards for recycling and reuse.

[0015] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0017] Figure 1 is a top view of the first embodiment of the cutting fluid recovery device provided by the present invention; Figure 2 is a cross-sectional view of a first embodiment of a cutting fluid recovery device provided by the present invention; Figure 3 yes Figure 2 A magnified view of part A; Figure 4 It is a structural schematic diagram of a filter assembly of a first embodiment of a cutting fluid recovery device provided by the present invention; Figure 5 It is a cross-sectional view of the oil-water separation box of the first embodiment of the cutting fluid recovery device provided by the present invention; Figure 6 yes Figure 5 A magnified view of part B; Figure 7 yes Figure 5 Enlarged view of part C; Figure 8 It is a cross-sectional view of the oil-water separation box of the second embodiment of the cutting fluid recovery device provided by the present invention; Fig. 9It is a top view of the oil-water separation box of the second embodiment of the cutting fluid recovery device provided by the present invention.

[0018] In the figure, the reference numerals and their corresponding component names are as follows: 1. Flushing tank; 10. Tank body; 11. Sink; 12. Filter assembly; 13. Bracket; 120. Filter box; 121. Primary filter screen; 122. Secondary filter screen; 123. Overlap; 124. Rotating shaft; 125. Supporting part; 2. First water pump; 21. Water pumping pipe; 3. Oil-water separation box; 30. Box body; 31. Primary separation chamber; 32. Secondary separation chamber; 33. Tertiary separation chamber; 34. First water pipe; 35. Second water pipe; 36. First collection port; 37. Second collection port; 38. Water outlet; 39. Filter material; 300. Vertical plate; 4. Water storage tank; 41. Water diversion pipe; 42. Second water pump; 43. Faucet; 5. guide assembly; 50. housing; 51. guide plate; 501. first inner wall; 502. second inner wall; 6. partition; 61. first partition; 62. second partition; 7. Collection box; 8. Control unit; 9. Liquid level sensor. DETAILED DESCRIPTION

[0019] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0020] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0021] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0022] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0023] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In this document, “upper”, “lower”, “front”, “back”, “top”, “bottom”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0025] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0026] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0027] In this document, unless otherwise specified, "plurality" means two or more. Unless otherwise specified, the numerical ranges herein include not only the entire ranges within the two endpoints thereof, but also several sub-ranges contained therein.

[0028] In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art may recognize the application of other processes and / or the use of other materials. Embodiment 1

[0029] Figures 1 to 7 The first embodiment of the cutting fluid recovery device provided by the present invention is shown. In this embodiment, the cutting fluid recovery device comprises a flushing tank 1 , a first water pump 2 and an oil-water separation box 3 .

[0030] The flushing pool 1 comprises a pool body 10 and a filter assembly 12. A sinking trough 11 is provided at the bottom of the pool body 10. The filter assembly 12 is provided at the opening of the sinking trough 11. The first water pump 2 is provided in the sinking trough 11.

[0031] The oil-water separation box 3 includes a box body 30, in which a primary separation chamber 31, a secondary separation chamber 32 and a tertiary separation chamber 33 are arranged in sequence. The primary separation chamber 31 and the secondary separation chamber 32 are connected through a first water pipe 34 near the bottom of the box body 30; the secondary separation chamber 32 and the tertiary separation chamber 33 are connected through a second water pipe 35 near the bottom of the box body 30; the primary separation chamber 31 is connected to the first water pump 2 through a water pumping pipe 21. A first collecting port 36 for discharging floating oil on the liquid surface and located higher than the first water pipe 34 is provided on the side wall of the primary separation chamber 31; a water outlet 38 for discharging water and located higher than the second water pipe 35 is provided on the side wall of the tertiary separation chamber 33. The height of the water outlet 38 is lower than the first collecting port 36, and a filter material 39 is provided in the tertiary separation chamber 33. The filter material 39 can be made of filter cotton, activated carbon, ceramsite or other conventional filter materials used for water treatment. The filter material 39 can be taken out for cleaning or replacement after being used for a period of time.

[0032] The product cleaning is carried out in the tank body 10 of the flushing tank 1, and the waste liquid with debris, oil and cutting fluid generated by the cleaning is collected in the tank body 10. A bracket 13 can be provided in the tank body 10 for placing the product to be cleaned. A nozzle can also be provided in the flushing tank 1 to facilitate flushing of the product.

[0033] The waste liquid in the tank body 10 passes through the filter assembly 12 and enters the sink 11. The filter assembly 12 can initially filter debris in the waste liquid. The first water pump 2 transports the waste liquid in the sink 11 to the oil-water separation tank 3 through the pumping pipe 21, and the oil in the waste liquid is separated in the oil-water separation tank 3. The first water pump 2 can use a low-speed pump to limit the flow rate of the waste liquid.

[0034] The water extraction pipe 21 delivers the waste liquid into the primary separation chamber 31 of the oil-water separation box 3, and the waste liquid passes through the primary separation chamber 31, the secondary separation chamber 32 and the tertiary separation chamber 33 in sequence. The cutting fluid can be an aqueous solution or an emulsion. Different from the density of the oil stain, the oil stain in the waste liquid becomes floating oil on the liquid surface. When the liquid level of the waste liquid in the primary separation chamber 31 reaches the first collection port 36, the floating oil can be discharged through the first collection port 36. The cutting fluid in the waste liquid sinks in the box body 30, and the cutting fluid at the bottom of the box body 30 has a lower oil stain content and can enter the secondary separation chamber 32 through the first water pipe 34. The cutting fluid can be further left to stand in the secondary separation chamber 32 to separate the residual floating oil. The cutting fluid in the secondary separation chamber 32 can enter the tertiary separation chamber 33 through the second water pipe 35. The cutting fluid is filtered by the filter material 39 in the tertiary separation chamber 33, and clarified in the tertiary separation chamber 33 to remove impurities such as residual powder, and then discharged through the water outlet 38.

[0035] Since the density of floating oil is less than that of cutting fluid, according to the liquid pressure, the liquid level in the primary separation chamber 31 is actually slightly higher than the liquid levels in the secondary separation chamber 32 and the tertiary separation chamber 33. The water outlet 38 is set lower than the first collection port 36 and close to the liquid surface of the cutting fluid entering the tertiary separation chamber 33. The cutting fluid discharged from the water outlet 38 can be collected in a container for reuse.

[0036] The waste liquid passes through the filter component 12 to remove debris, and then passes through the first separation chamber 31, the second separation chamber 32 and the third separation chamber 33 for separation and filtration, so that the oil and impurities in the cutting fluid are fully removed, and the treatment effect is better, so that the cutting fluid finally separated is of higher quality and can meet the standards for recycling and reuse.

[0037] In some embodiments, Figure 1 and Figure 2 As shown, the cutting fluid recovery device further includes a water storage tank 4, which is connected to the water outlet 38 of the three-stage separation chamber 33 through a water guide pipe 41. The water storage tank 4 is used to store the cutting fluid flowing out of the three-stage separation chamber 33. The water guide pipe 41 can be arranged to extend horizontally, and the cutting fluid in the three-stage separation chamber 33 naturally flows into the water storage tank 4 through the water guide pipe 41 for storage, so as to facilitate reuse.

[0038] like Figure 2 As shown, in order to facilitate the use of the cutting fluid in the water storage tank 4, a faucet can be installed on the water storage tank 4. Further, a second water pump 42 can also be provided in the water storage tank 4 to output the cutting fluid in the water storage tank 4.

[0039] The flushing tank 1 and the water storage tank 4 can be respectively arranged at opposite ends of the oil-water separation tank 3, with the flushing tank 1 close to the primary separation chamber 31 and the water storage tank 4 close to the tertiary separation chamber 33. This is conducive to the overall compactness of the equipment.

[0040] In some embodiments, Figure 4 and Figure 5 As shown, the filter assembly 12 includes a filter box 120, which is detachably disposed in the opening of the sink 11. A primary filter screen 121 and a secondary filter screen 122 are disposed in the filter box 120. The primary filter screen 121 is disposed above the secondary filter screen 122, and the secondary filter screen 122 is located at the bottom of the filter box 120. The waste liquid in the pool body 10 enters the filter box 120, is filtered by the primary filter screen 121 and the secondary filter screen 122 in sequence, and then enters the sink 11.

[0041] Furthermore, the mesh number of the primary filter 121 is smaller than the mesh number of the secondary filter 122. The primary filter 121 has a smaller mesh number and a larger mesh hole, and can filter out debris such as aluminum chips with larger particles. The secondary filter 122 has a larger mesh number and a smaller mesh hole, and can filter out finer impurities such as aluminum powder to prevent the first water pump 2 from being blocked. Preferably, the secondary filter 122 is configured to filter aluminum powder and other impurities at the 10 μm level.

[0042] The filter box 120 can be installed in the opening of the sink 11 by snap-fitting or other conventional detachable methods, so that the filter assembly 12 can be removed as a whole, which is convenient for cleaning the filtered debris, powder and other impurities.

[0043] Specifically, if Figure 4 As shown, the opening edge of the filter box 120 is provided with a lap edge 123, and the lap edge 123 can be supported on the opening edge of the sinking tank 11. The filter box 120 can be directly taken out from the opening of the sinking tank 11, which is easy to operate.

[0044] In some embodiments, the primary filter screen 121 is rotatably connected to the filter box 120 via a rotating shaft 124. One side edge of the primary filter screen 121 is connected to the inner side wall of the filter box 120 via the rotating shaft 124. The rotating shaft 124 extends laterally along the inner side wall of the filter box 120, and the primary filter screen 121 can rotate around the rotating shaft in the filter box 120. The filter box 120 is provided with a support portion 125 on a side away from the rotating shaft 124, and a side of the primary filter screen 121 away from the rotating shaft 124 can be supported on the support portion 125. When cleaning, the primary filter screen 121 can be opened to facilitate cleaning of fine debris, powder, etc. filtered out by the secondary filter screen 122.

[0045] In some embodiments, the side wall of the filter box 120 can be made of a filter screen, which can increase the filtering efficiency of the waste liquid, and the side wall of the filter box 120 is not easily blocked. The mesh number of the filter screen of the filter box 120 can be the same as that of the secondary filter screen 122 to prevent fine debris, powder, etc. from entering the sink 11. The side wall of the filter box 120 and the secondary filter screen 122 can be an integrated structure.

[0046] In some embodiments, the first collecting port 36 is close to the top of the primary separation chamber 31, and the water outlet 38 is slightly lower than the first collecting port 36 and not lower than the filter material 39. The cutting fluid in the tertiary separation chamber 33 is completely filtered by the filter material 39, and when the liquid level reaches the water outlet 38, it flows out naturally through the water outlet 38.

[0047] In some embodiments, Figure 5 and Figure 6As shown, a flow guide assembly 5 is provided in the primary separation chamber 31 of the oil-water separation box 3. The flow guide assembly 5 is located at the water outlet end of the water pumping pipe 21, and plays a buffering role on the water flow output by the water pumping pipe 21. The flow guide assembly 5 includes a shell 50 and a plurality of flow guide plates 51. The plurality of flow guide plates 51 are respectively arranged in an inclined manner in the shell 50, and are arranged in sequence along the height direction to guide the liquid sent into the shell 50 by the water pumping pipe 21 to flow downward. The liquid can flow downward along the inclined flow guide plates 51. Adjacent flow guide plates 51 are arranged at intervals and in opposite inclination directions, staggered with each other, the lower end of the upper flow guide plate 51 is close to the upper end of the lower flow guide plate 51, and the liquid falls from the lower end of the upper flow guide plate 51 onto the lower flow guide plate 51.

[0048] The lower end of the guide plate 51 at the bottom is lower than the first collecting port 36. The lower end of the guide plate 51 can slowly introduce the waste liquid into the liquid surface of the primary separation chamber 31, reduce the flow rate of the waste liquid, reduce the impact and disturbance of the waste liquid on the liquid surface, maintain the stability of the liquid surface, and help to maintain the separation state of the floating oil on the liquid surface and the cutting fluid.

[0049] In some embodiments, the guide assembly 5 is disposed on a side of the housing 30 away from the first collecting port 36 to reduce disturbance of the floating oil at the first collecting port 36. The lower end of the guide plate 51 at the bottom can be close to the inner wall of the primary separation chamber 31 to guide the waste liquid into the liquid surface along the edge of the primary separation chamber 31.

[0050] Specifically, the shell 50 of the guide assembly 5 can be arranged on the inner wall of the primary separation chamber 31, and the water outlet end of the water pumping pipe 21 can extend into the shell 50 from the top of the shell 50, or be connected to the side wall of the shell 50. The inner walls on opposite sides of the shell 50 are respectively the first inner wall 501 and the second inner wall 502. Among the two upper and lower adjacent guide plates 51, the upper guide plate 51 has one end connected to the first inner wall 501, and the other end extends downward obliquely and close to the second inner wall 502, and the lower guide plate 51 has one end connected to the second inner wall 502, and the other end extends downward obliquely and close to the first inner wall 501. The liquid flows downward in a zigzag manner along the multiple guide plates 51, which can fully reduce the flow rate.

[0051] In some embodiments, Figure 5 As shown, the primary separation chamber 31, the secondary separation chamber 32 and the tertiary separation chamber 33 in the box body 30 can be separated by two spaced vertical plates 300. The vertical plates 300 extend from one side of the box body 30 to the other side, the first water pipe 34 is arranged on the vertical plate 300 between the primary separation chamber 31 and the secondary separation chamber 32, and the second water pipe 35 is arranged on the vertical plate 300 between the secondary separation chamber 32 and the tertiary separation chamber 33.

[0052] In some embodiments, the outlet end of the water suction pipe 21 and the first water pipe 34 are respectively close to opposite sides of the box body 30 to extend the path distance of the waste liquid from the outlet end of the water suction pipe 21 to the first water pipe 34, which is conducive to the separation of cutting fluid and oil in the primary separation chamber 31. Specifically, the guide assembly 5 and the first water pipe 34 are respectively close to opposite sides of the box body 30.

[0053] In some embodiments, the first water pipe 34 and the second water pipe 35 are respectively close to the opposite sides of the box body 30 to extend the path distance of the liquid flowing from the first water pipe 34 to the second water pipe 35, which is beneficial to further separate the residual oil from the cutting fluid in the secondary separation chamber 32.

[0054] In some embodiments, the second water pipe 35 and the water outlet 38 are respectively close to opposite sides of the box body 30 to extend the path distance of the liquid flowing from the second water pipe 35 to the water outlet 38 and increase the difficulty for impurities to reach the water outlet 38.

[0055] In some embodiments, the tube body of the first water pipe 34 extends horizontally to guide the liquid to flow horizontally, and the water inlet end of the first water pipe 34 is bent downward to face the bottom of the primary separation chamber 31, and a distance is left between the water inlet end and the bottom of the primary separation chamber 31. Since the cutting fluid at the bottom of the primary separation chamber 31 contains less oil, the water inlet end of the first water pipe 34 is arranged downward, which can reduce the oil in the primary separation chamber 31 from entering the secondary separation chamber 32 through the first water pipe 34.

[0056] It is inevitable that a small amount of impurities such as fine powders in the waste liquid in the sink 11 enter the primary separation chamber 31 through the first water pump 2 and the water pumping pipe 21, and settle at the bottom of the primary separation chamber 31. There is a gap between the water inlet end of the first water pipe 34 and the bottom of the primary separation chamber 31, which can reduce the impurities settled at the bottom of the primary separation chamber 31 from entering the secondary separation chamber 32 through the first water pipe 34.

[0057] In some embodiments, the tube body of the second water pipe 35 extends laterally to guide the liquid to flow laterally, and the water inlet end of the second water pipe 35 is bent downward to face the bottom of the secondary separation chamber 32, and a gap is left between the water inlet end of the second water pipe 35 and the bottom of the secondary separation chamber 32. Since the cutting fluid at the bottom of the secondary separation chamber 32 contains less oil, the water inlet end of the second water pipe 35 is set downward, which can reduce the oil in the secondary separation chamber 32 from entering the tertiary separation chamber 33 through the second water pipe 35. In addition, there is a gap between the water inlet end of the second water pipe 35 and the bottom of the secondary separation chamber 32, which can reduce the impurities settled at the bottom of the secondary separation chamber 32 from entering the tertiary separation chamber 33 through the second water pipe 35.

[0058] The oil-water separation box 3 has a simple overall structure and low manufacturing cost. It can separate the floating oil in the waste liquid and precipitate impurities such as fine powder in the waste liquid at the bottom by static sedimentation. The floating oil and impurities are separated step by step through the structural settings of the primary separation chamber 31, the secondary separation chamber 32 and the tertiary separation chamber 33. Finally, it is filtered again through the filter material 39 in the tertiary separation chamber 33 to remove the residual floating oil and impurities, so as to obtain a cutting fluid with better quality.

[0059] In some embodiments, Figure 5 As shown, a second collecting port 37 for discharging floating oil on the liquid surface and located higher than the second water pipe 35 is provided on the side wall of the secondary separation chamber 32. The second collecting port 37 is located no higher than the first collecting port 36 and no lower than the water outlet 38. A small amount of floating oil separated from the cutting fluid in the secondary separation chamber 32 can be discharged through the second collecting port 37.

[0060] Specifically, the first collecting port 36 and the second collecting port 37 are located on the same side wall of the box body 30 , so as to uniformly collect the floating oil discharged from the first collecting port 36 and the second collecting port 37 .

[0061] In some embodiments, Figure 1 As shown, a collecting box 7 may be provided outside the box body 30 to collect the floating oil discharged from the first collecting port 36. The first collecting port 36 is lower than the collecting box 7, and the floating oil in the primary separation chamber 31 can naturally flow into the collecting box 7 through the first collecting port 36. The first collecting port 36 may be connected to the collecting box 7 through a pipeline.

[0062] Furthermore, the floating oil discharged from the second collecting port 37 is also sent to the collecting box 7 for unified collection. The floating oil in the secondary separation chamber 32 can naturally flow into the collecting box 7 through the second collecting port 37. The second collecting port 37 can also be connected to the collecting box 7 through a pipeline.

[0063] In some embodiments, Figure 2 and Figure 3 As shown, the cutting fluid recovery device further includes a control unit 8 and a liquid level sensor 9. The liquid level sensor 9 and the first water pump 2 are electrically connected to the control unit 8, respectively.

[0064] The liquid level sensor 9 is arranged in the sinking tank 11 and is used to send a liquid level signal to the control unit 8. The control unit 8 sends a control signal to the first water pump 2 based on the liquid level signal to control the start and stop of the first water pump 2. In detail, the liquid level sensor 9 can detect the liquid level in the sinking tank 11. When the liquid level in the sinking tank 11 is higher than a predetermined value, the control unit 8 controls the first water pump 2 to work based on the liquid level signal to transport the waste liquid in the sinking tank 11 to the oil-water separation tank 3; when the liquid level sensor 9 detects that the liquid level in the sinking tank 11 reaches a predetermined value or is lower than a predetermined value, the control unit 8 controls the first water pump 2 to stop working based on the liquid level signal to prevent the first water pump 2 from idling.

[0065] Furthermore, the second water pump 42 in the water storage tank 4 may also be electrically connected to the control unit 8 , and the start and stop of the second water pump 42 may be controlled by the control unit 8 .

[0066] The cutting fluid recovery device is operated by the control unit 8, so that the automatic operation is realized, which is beneficial to ensure the operation safety of the device, reduce the manual labor and make the use of the device more convenient. Embodiment 2

[0067] Figure 8 and Fig. 9 The second embodiment of the cutting fluid recovery device provided by the present invention is shown. The difference between this embodiment and the first embodiment is that at least one partition plate 6 is provided in the secondary separation chamber 32 of the oil-water separation box 3 for extending the flow path of the liquid from the first water pipe 34 to the second water pipe 35.

[0068] Specifically, the partition 6 is located between the first water pipe 34 and the second water pipe 35, and the partition 6 extends upward from the bottom of the secondary separation chamber 32. The top of the partition 6 is located at a height lower than the liquid level in the secondary separation chamber 32. The cutting fluid in the secondary separation chamber 32 needs to bypass the partition 6, thereby extending the flow path of the liquid from the first water pipe 34 to the second water pipe 35, which is conducive to fully separating the residual oil in the cutting fluid. In addition, the top of the partition 6 is lower than the liquid level in the secondary separation chamber 32, which can prevent the partition 6 from obstructing the floating oil, and the floating oil can bypass the top of the partition 6 and flow to the second collection port 37.

[0069] Furthermore, a gap may be left between the side surface of the partition plate 6 and the side wall of the secondary separation chamber 32 , so that the cutting fluid at the bottom of the secondary separation chamber 32 can flow to the second water pipe 35 .

[0070] In some embodiments, two partitions 6 are provided in the secondary separation chamber 32, namely, a first partition 61 and a second partition 62. The first partition 61 and the second partition 62 are arranged between the first water pipe 34 and the second water pipe 35, with the first partition 61 being close to the first water pipe 34 and the second partition 62 being close to the second water pipe 35. The top positions of the first partition 61 and the second partition 62 are respectively lower than the top positions of the second collecting port 37, so as not to hinder the floating oil on the liquid surface in the secondary separation chamber 32.

[0071] Specifically, the secondary separation chamber 32 has a side close to the primary separation chamber 31 as a front wall and a side close to the tertiary separation chamber 33 as a rear wall. The first water pipe 34 is located at the front wall of the secondary separation chamber 32, and the secondary separation chamber 32 is located at the rear wall of the secondary separation chamber 32. The first partition 61 extends from the front wall to the rear wall of the secondary separation chamber 32, and a gap is left between the first partition 61 and the rear wall of the secondary separation chamber 32; the second partition 62 extends from the rear wall to the front wall of the secondary separation chamber 32, and a gap is left between the second partition 62 and the front wall of the secondary separation chamber 32. The cutting fluid entering the secondary separation chamber 32 from the first water pipe 34 bypasses the first partition 61 and the second partition 62 in an "S"-shaped path, and then flows to the second water pipe 35, which fully extends the flow path of the cutting fluid and makes the path tortuous, which is conducive to the cutting fluid to fully separate the residual oil. The first partition 61 and the second partition 62 can also prevent the impurities precipitated at the bottom of the secondary separation chamber 32 from flowing to the second water pipe 35.

[0072] When the cutting fluid bypasses the first partition plate 61 and the second partition plate 62 to reach the second water pipe 35, the content of oil and impurities is greatly reduced, so that the final recovered cutting fluid has higher quality, and is conducive to extending the service life of the filter material 39, effectively reducing the use cost of the equipment.

[0073] Embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A cutting fluid recovery device, characterized in that: include: A flushing pool, comprising a pool body and a filter assembly, wherein a sinking trough is provided at the bottom of the pool body, and the filter assembly is provided at the opening of the sinking trough; a first water pump, which is disposed in the sinking tank; An oil-water separation box comprises a box body, wherein a primary separation chamber, a secondary separation chamber and a tertiary separation chamber are arranged in sequence in the box body, the primary separation chamber and the secondary separation chamber are connected via a first water pipe near the bottom of the box body, the secondary separation chamber and the tertiary separation chamber are connected via a second water pipe near the bottom of the box body, the primary separation chamber is connected to the first water pump via a suction pipe, a first collecting port for discharging floating oil on the liquid surface and positioned higher than the first water pipe is provided on the side wall of the primary separation chamber, a water outlet for discharging water and positioned higher than the second water pipe is provided on the side wall of the tertiary separation chamber, the water outlet is positioned lower than the first collecting port, and filter material is provided in the tertiary separation chamber.

2. The cutting fluid recovery device according to claim 1, characterized in that: It also includes a water storage tank, which is connected to the water outlet of the three-stage separation chamber through a water diversion pipe.

3. The cutting fluid recovery device according to claim 1, characterized in that: The filter assembly includes a filter box, which is detachably arranged in the opening of the sinking trough. A primary filter screen and a secondary filter screen are arranged in the filter box, and the primary filter screen is arranged above the secondary filter screen; the mesh number of the primary filter screen is smaller than the mesh number of the secondary filter screen; the primary filter screen is rotatably connected to the filter box through a rotating shaft.

4. The cutting fluid recovery device according to claim 1, characterized in that: The first-level separation chamber is provided with a flow guide assembly located at the water outlet end of the water pumping pipe, the flow guide assembly includes a shell and a plurality of flow guide plates, the plurality of flow guide plates are respectively arranged in an inclined manner in the shell and arranged in sequence along the height direction to guide the liquid sent into the shell by the water pumping pipe to flow downward, and the adjacent flow guide plates are arranged at intervals and have opposite inclined directions; The lower end of the guide plate located at the bottom is lower than the first collecting port.

5. The cutting fluid recovery device according to claim 1, characterized in that: The water outlet end of the water pumping pipe and the first water pipe are respectively close to opposite sides of the box body; and / or, The first water pipe and the second water pipe are respectively close to two opposite sides of the box body.

6. The cutting fluid recovery device according to claim 1, characterized in that: The body of the first water pipe extends transversely, and the water inlet end thereof is bent downward toward the bottom of the primary separation chamber, and a distance is left between the first water pipe and the bottom of the primary separation chamber; and / or, The pipe body of the second water pipe extends transversely, and the water inlet end thereof is bent downward toward the bottom of the secondary separation chamber, and a distance is left between the water inlet end and the bottom of the secondary separation chamber.

7. The cutting fluid recovery device according to claim 6, characterized in that: A second collecting port is provided on the side wall of the secondary separation chamber for discharging floating oil on the liquid surface and is located higher than the second water pipe. The height of the second collecting port is not higher than the first collecting port and not lower than the water outlet.

8. The cutting fluid recovery device according to claim 1, characterized in that: At least one partition is provided in the secondary separation chamber for extending the flow path of the liquid from the first water pipe to the second water pipe. The partition extends upward from the bottom of the secondary separation chamber, and the position height of the top of the partition is lower than the liquid level in the secondary separation chamber.

9. The cutting fluid recovery device according to claim 8, characterized in that: The secondary separation chamber is provided with two partitions, which are respectively a first partition and a second partition. The first partition and the second partition are arranged between the first water pipe and the second water pipe at intervals. The first partition is close to the first water pipe, and the second partition is close to the second water pipe. The secondary separation chamber has a front wall on the side close to the primary separation chamber and a rear wall on the side close to the tertiary separation chamber. The first partition extends from the front wall to the rear wall of the secondary separation chamber and a gap is left between the first partition and the rear wall of the secondary separation chamber. The second partition extends from the rear wall to the front wall of the secondary separation chamber and a gap is left between the second partition and the front wall of the secondary separation chamber.

10. The cutting fluid recovery device according to any one of claims 1 to 9, characterized in that: It also includes a control unit and a liquid level sensor, wherein the liquid level sensor is arranged in the sinking tank and is used to send a liquid level signal to the control unit, and the control unit sends a control signal to the first water pump based on the liquid level signal to control the start and stop of the first water pump.

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