Cooling liquid multi-stage filtering and oil removing recovery equipment with concentration compensation

Abstract

The utility model discloses a kind of cooling liquid multistage filtration oil removal recovery equipment with concentration compensation, it is related to cooling liquid recovery technical field, including recovery tank, rough filter structure, fine filter structure, oil removal structure and concentration supplement structure, rough filter structure is slidably installed in recovery tank width direction on one side, fine filter structure and oil removal structure are all installed in recovery tank and located below rough filter structure, concentration supplement structure is installed in recovery tank and located below fine filter structure and oil removal structure.The cooling liquid multistage filtration oil removal recovery equipment with concentration compensation can utilize efficient multistage filtration to improve the filtering efficiency of particulate impurities, and also can utilize the operation of skimming oil belt part in oil removal structure to realize the continuous removal of oil, combined with concentration detection and chemical liquid supplement, the effect of concentration compensation can also be achieved, to maximize the recovery of the physical and chemical properties of cooling liquid, so that the service life of cooling liquid is extended several times, thereby improving the utilization rate of cooling liquid.

Description

Technical Field

[0001] This utility model relates to the field of coolant recovery technology, and more specifically, to a multi-stage filtration and oil removal recovery device for coolant with concentration compensation. Background Technology

[0002] In the field of machining, especially in precision machining processes such as grinding and cutting, coolant (or cutting fluid) plays a crucial role. It can effectively reduce the temperature of the workpiece and the tool, reduce friction, and remove metal chips and powder generated during the machining process. However, used coolant will contain a large number of impurities, which will change the properties of the coolant and make it impossible to recycle it directly. Direct discharge will cause serious environmental problems. Therefore, recycling and reusing used coolant is a key link in achieving green manufacturing and reducing production costs.

[0003] Chinese utility model patent CN217966123U discloses a coolant recovery and circulation device, including a top plate, a filter box fixedly installed at the bottom of the top plate, and a rotating cylinder rotatably connected to the left side of the filter box, extending to the right side of the filter box...; the above-mentioned coolant recovery and circulation device solves the problems of low coolant recovery efficiency and high impurity content in existing CNC machine tool coolant recovery devices through high-efficiency filtration.

[0004] Currently available coolant recovery devices have limitations such as insufficient filtration accuracy and difficulty in handling miscellaneous oils. They are unable to effectively remove micron-sized metal powders, grinding wheel debris, and miscellaneous oils (such as machine tool hydraulic oil and guide rail lubricating oil) from the coolant. This not only reduces the effectiveness of the coolant but also poses a risk of wear or contamination of the machine tool and its related components, making them impractical. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a multi-stage filtration and oil removal and recovery device for coolant with concentration compensation, so as to restore the physical and chemical properties of coolant to the maximum extent through efficient multi-stage filtration, stable removal of floating oil and precise concentration compensation, thereby extending the service life of coolant several times, improving the utilization rate of coolant and significantly improving the practicality of the equipment.

[0006] To achieve the above objectives, this utility model provides a multi-stage filtration and oil removal recovery device for coolant with concentration compensation, including a recovery tank, a coarse filter structure slidably installed on one side of the recovery tank in the width direction, a fine filter structure and an oil removal structure installed in the recovery tank and located below the coarse filter structure, and a concentration replenishment structure installed in the recovery tank and located below the fine filter structure and the oil removal structure. The fine filtration structure includes a mounting plate vertically installed inside the recovery tank, several water inlet plates fixedly installed on one side of the mounting plate, a membrane filter element installed on the top of each water inlet plate, and a flow buffer plate fixedly installed at the bottom of the mounting plate. The oil removal structure is located on the side of the mounting plate opposite to the water inlet plates. The oil removal structure includes an oil collecting plate installed inside the recovery tank along the width direction of the recovery tank, an oil scraper installed on the side of the oil collecting plate near the inner wall of the recovery tank, an oil skimming belt component installed inside the recovery tank for absorbing floating oil, an oil drain pipe installed on the recovery tank and located at the bottom of the oil collecting plate, and a water baffle installed at the bottom of the oil collecting plate. A portion of the oil skimming belt component is located above the oil collecting plate, and another portion is located on the side of the oil collecting plate away from the oil scraper. The top of the oil scraper is attached to the oil skimming belt component, and the top of the water baffle is provided with an overflow port.

[0007] Furthermore, the recycling box is provided with multiple cavities, including a sliding cavity opened on one side of the recycling box in the width direction, a filter cavity and an oil removal cavity located below the recycling box and at the same horizontal height, and a water storage cavity located below the filter cavity and the oil removal cavity. The filter cavity and the oil removal cavity are respectively located on both sides of the mounting plate. The fine filtration structure is located in the filter cavity, and the oil removal structure is located in the oil removal cavity.

[0008] Furthermore, the coarse filter structure includes a movable box that is horizontally slidably installed in the sliding cavity and has an open top, a slag-blocking plate that is vertically installed in the movable box and divides the movable box into two parts, and a filter box installed in the movable box and located on one side of the slag-blocking plate. The top of the recovery box is provided with a discharge port, and the discharge port is located above the side of the slag-blocking plate away from the filter box.

[0009] Furthermore, the recycling tank is provided with a first communication port located between the sliding chamber and the filtering chamber, and the recycling tank is provided with a second communication port located between the oil removal chamber and the water storage chamber, and the second communication port is located on the side of the baffle plate away from the skimming strip component.

[0010] Furthermore, the skimming belt component includes a drive pulley rotatably mounted above the scraper plate, a first drive member mounted on one side of the width direction of the recovery box and used to drive the drive pulley to rotate, two driven pulleys mounted on the side of the oil collecting plate opposite to the scraper plate, and a skimming belt body fitted on the outside of the drive pulley and the driven pulleys, with the top of the scraper plate abutting the skimming belt body.

[0011] Furthermore, the multi-stage filtration and oil recovery equipment for coolant with concentration compensation also includes an oil storage structure. The oil storage structure includes a mounting frame installed on one side of the recovery tank along its length and corresponding to the position of the oil drain pipe, and an oil storage box that is horizontally slidably installed in the mounting frame and has an open top. The oil storage box is located below the oil drain pipe.

[0012] Furthermore, the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation also includes a concentration detection component and a water pumping structure, which are installed inside the water storage chamber. The concentration detection component is used to detect the concentration of the liquid in the water storage chamber, and the water pumping structure is installed outside the recovery tank and extends into the water storage chamber.

[0013] Furthermore, the concentration replenishment structure includes a liquid storage cylinder installed on the top wall of the water storage chamber, a nozzle installed at one end of the liquid storage cylinder along its length, an electric push rod installed inside the liquid storage cylinder and on the side away from the nozzle, and a piston installed at the output end of the electric push rod. The liquid storage cylinder is used to store the drug solution.

[0014] Furthermore, the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation also includes a stirring structure, which includes a fixed plate vertically installed in the water storage chamber, a second drive unit installed on one side of the fixed plate, and a stirring blade installed at the output end of the second drive unit and located on the other side of the fixed plate.

[0015] Compared with the prior art, this utility model has the following advantages and effects: 1. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation in this utility model achieves step-by-step interception of solid impurities by setting up a multi-stage filtration scheme that combines coarse filtration and fine filtration structures, greatly improving the filtration efficiency and removal quality of particulate impurities; at the same time, it can also achieve automated and continuous removal of impurities through the operation of the oil skimming belt component in the oil removal structure, thereby reducing the degree of pollution of the recovered liquid; it helps to ensure the high cleanliness of the recovered liquid and fundamentally avoids the damage of impurities in the recovered liquid to processing quality, equipment nozzles and pumps.

[0016] 2. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation in this utility model integrates a concentration detection component and a concentration replenishment structure, constructing a closed-loop control system. The system can monitor the concentration of the liquid in the water storage chamber in real time and spray the pre-prepared solution as needed by driving the electric push rod, which helps to stabilize the chemical composition and performance of the recovered liquid within the optimal range of use, ensuring the effectiveness and quality of the recovered liquid.

[0017] 3. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation in this utility model can automatically maintain a constant liquid level in the oil removal chamber by setting up a baffle plate and an overflow port. This ensures that the immersion depth of the skimming strip component is always within the optimal range, which not only ensures the efficient adsorption of floating oil by the skimming strip body, but also effectively prevents the skimming strip body from carrying out too much coolant due to excessive liquid level. This achieves a balance between efficient oil removal and reduced coolant waste. In addition, the design that the width of the skimming strip body is greater than the width of the inner wall of the recovery tank and separates it significantly reduces the floating oil content on the side of the skimming strip body near the baffle plate, which helps to prevent floating oil from being discharged through the overflow port, thereby ensuring the purity of the liquid in the water storage chamber. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a multi-stage filtration and oil removal recovery device for coolant with concentration compensation in an embodiment of this utility model. Figure 2 This is a schematic diagram of the main cross-sectional structure of the multi-stage filtration and oil removal and recovery equipment for coolant with concentration compensation in this embodiment of the present invention. Figure 3 This is a partial side view cross-sectional structural diagram of the skimming belt component of the multi-stage filtration and oil removal and recovery equipment for coolant with concentration compensation in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Recycling tank; 11. Sliding cavity; 12. Material discharge port; 13. Filtering cavity; 14. First connecting port; 15. Oil removal cavity; 16. Water storage cavity; 17. Second connecting port; 18. Display component; 19. Liquid replenishment component; 2. Coarse filtration structure; 21. Movable box; 22. Slag baffle; 23. Filter box; 3. Fine filtration structure; 31. Mounting plate; 32. Water inlet plate; 33. Membrane filter element; 34. Flow buffer plate; 4. Oil removal structure; 41. Oil skimming belt component; 411. Drive pulley; 412. First drive component; 413. Driven pulley; 414. Oil skimming belt body; 42. Oil collecting plate; 43. Oil scraper; 44. Oil drain pipe; 45. Water baffle plate; 5. Oil storage structure; 51. Mounting frame; 52. Oil storage box; 6. Concentration replenishment structure; 61. Liquid storage tank; 62. Nozzle; 63. Electric actuator; 64. Piston; 7. Stirring structure; 71. Fixed plate; 72. Second driving component; 73. Stirring blades; 8. Concentration detection component; 9. Pumping structure; 10. Control components. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-3 As shown in the figure, this utility model embodiment provides a multi-stage filtration and oil removal recovery device for coolant with concentration compensation, including a recovery tank 1, a coarse filter structure 2, a fine filter structure 3, an oil removal structure 4, and a concentration replenishment structure 6. The coarse filter structure 2 is slidably installed on one side of the recovery tank 1 in the width direction. The fine filter structure 3 and the oil removal structure 4 are both installed in the recovery tank 1 and located below the coarse filter structure 2. The concentration replenishment structure 6 is installed in the recovery tank 1 and located below the fine filter structure 3 and the oil removal structure 4.

[0023] The fine filtration structure 3 includes a mounting plate 31, a water inlet plate 32, a membrane filter element 33, and a flow retarder plate 34. The mounting plate 31 is vertically installed inside the recovery tank 1. Several water inlet plates 32 are fixedly installed on one side of the mounting plate 31. The membrane filter element 33 is installed on the top of each water inlet plate 32. The flow retarder plate 34 is fixedly installed on the bottom of the mounting plate 31. The oil removal structure 4 is located on the side of the mounting plate 31 away from the water inlet plates 32.

[0024] As a preferred embodiment of the above scheme, the water inlet plates 32 are inclined, and the top of each water inlet plate 32 is close to the bottom of the previous water inlet plate 32. The bottom of the water inlet plate 32 is provided with a water leakage hole, thereby reducing the liquid flow velocity and extending the liquid flow path to improve the filtration efficiency of particulate impurities. In addition, the precision of the membrane filter element 33 on each water inlet plate 32 increases sequentially from top to bottom, so as to intercept micron-sized metal powder and grinding wheel debris particles through high-precision filter media, further improving the filtration quality.

[0025] As a further description of the above scheme, after the coarse filter structure 2 intercepts debris in the liquid, the high-precision fine filter structure 3 can intercept micron-sized metal powder and grinding wheel debris particles to effectively remove particulate impurities from the liquid.

[0026] The oil removal structure 4 includes an oil collecting plate 42, an oil scraper 43, an oil skimming band component 41, an oil drain pipe 44, and a water baffle 45. The oil collecting plate 42 is installed inside the recovery tank 1 along the width direction of the recovery tank 1. The oil scraper 43 is installed on the side of the oil collecting plate 42 near the inner wall of the recovery tank 1. The oil skimming band component 41 is installed inside the recovery tank 1 to absorb floating oil. The oil drain pipe 44 is installed on the recovery tank 1 and located at the bottom of the oil collecting plate 42. The water baffle 45 is installed at the bottom of the oil collecting plate 42. A part of the oil skimming band component 41 is located above the oil collecting plate 42, and another part is located on the side of the oil collecting plate 42 away from the oil scraper 43. The top of the oil scraper 43 is attached to the oil skimming band component 41. An overflow port is provided at the top of the water baffle 45.

[0027] As a preferred embodiment of the above scheme, both the oil collecting plate 42 and the oil drain pipe 44 in this application adopt a design that is wider at the top and narrower at the bottom. This design of the oil collecting plate 42 can work with the inner wall of the recovery box 1 to collect the oil dripping from the scraper plate 43. This design of the oil drain pipe 44 can effectively improve the flow concentration of the oil and prevent the oil from getting out of control and splashing, thereby making the collection of the oil convenient.

[0028] As another preferred embodiment of the above scheme, the distance from the overflow port on the baffle plate 45 to the bottom of the skimming strip component 41 is 25-50 mm. When the liquid level on the side of the baffle plate 45 near the skimming strip component 41 is higher than the overflow port, the liquid will flow out from the overflow port of the baffle plate 45 to maintain a constant liquid level, thereby keeping the water depth of the skimming strip component 41 appropriate, and thus avoiding carrying out too much coolant while ensuring skimming efficiency.

[0029] Please see Figure 1-2 As shown, the recycling tank 1 has multiple cavities, including a sliding cavity 11, a filter cavity 13, an oil removal cavity 15, and a water storage cavity 16. The sliding cavity 11 is located on one side of the recycling tank 1 in the width direction. The filter cavity 13 and the oil removal cavity 15 are both located below the recycling tank 1 and at the same horizontal height. The water storage cavity 16 is located below the filter cavity 13 and the oil removal cavity 15. The filter cavity 13 and the oil removal cavity 15 are located on both sides of the mounting plate 31. The fine filtration structure 3 is located in the filter cavity 13, and the oil removal structure 4 is located in the oil removal cavity 15.

[0030] Please see Figure 1-3 As shown, the coarse filter structure 2 includes a movable box 21, a slag-blocking plate 22, and a filter box 23. The movable box 21 is horizontally slidably installed in the sliding cavity 11 and has an open top. The slag-blocking plate 22 is vertically installed in the movable box 21 and divides the movable box 21 into two parts. The filter box 23 is installed in the movable box 21 and is located on one side of the slag-blocking plate 22. The top of the recovery box 1 is provided with a discharge port 12, and the discharge port 12 is located above the side of the slag-blocking plate 22 away from the filter box 23.

[0031] As a further description of the above solution, the coolant used during the processing can carry a large number of chips from the discharge port 12 into the sliding chamber 11 of the recovery box 1 under the action of the machine tool chip conveying structure (such as a chain plate chip conveyor or a magnetic chip conveyor), and fall into the filter box 23 of the sliding chamber 11. When the used coolant flows into the filter box 23, large pieces of chips will be blocked by the slag baffle 22. At the same time, the filter components installed in the filter box 23 will also filter the liquid, thereby effectively removing impurities from the liquid.

[0032] As a preferred embodiment of the above scheme, the filter box 23 includes a box body and filter media filled inside the box body, and the side of the box body near the slag baffle 22 is provided with micro-perforations so that liquid can enter the box body through the micro-perforations and come into contact with the filter media.

[0033] As a further description of the above solution, when it is necessary to replace the filter media or clean the debris, the movable box 21 can be pulled out of the sliding cavity 11, at which time the filter box 23 can be taken out for replacement, and it is also convenient to clean the debris in the movable box 21.

[0034] Please see Figure 2 As shown, the recovery tank 1 is provided with a first connecting port 14 located between the sliding chamber 11 and the filter chamber 13, and the recovery tank 1 is provided with a second connecting port 17 located between the oil removal chamber 15 and the water storage chamber 16, and the second connecting port 17 is located on the side of the baffle plate 45 away from the skimming strip component 41; the liquid in the sliding chamber 11 can fall into the filter chamber 13 through the first connecting port 14, while the liquid in the oil removal chamber 15 can fall into the water storage chamber 16 through the second connecting port 17.

[0035] Please see Figure 2-3 As shown, the skimming belt component 41 includes a drive pulley 411, a first drive member 412, a driven pulley 413, and a skimming belt body 414. The drive pulley 411 is rotatably mounted above the scraper plate 43. The first drive member 412 is mounted on one side of the recovery box 1 in the width direction and is used to drive the drive pulley 411 to rotate. The two driven pulleys 413 are mounted on the side of the oil collecting plate 42 away from the scraper plate 43. The skimming belt body 414 is fitted on the outside of the drive pulley 411 and the driven pulleys 413. The top of the scraper plate 43 is attached to the skimming belt body 414.

[0036] As a further description of the above scheme, the first driving member 412 drives the driving pulley 411 to rotate, which allows the skimming belt body 414 to rotate outside the driving pulley 411 and the driven pulley 413, so as to realize the skimming operation by using the skimming belt body 414 in contact with the floating oil on the liquid surface. During this process, the scraper plate 43 can cleanly scrape off the waste oil on the skimming belt body 414.

[0037] As a preferred embodiment of the above solution, the width of the skimming belt body 414 in this application is greater than the width of the inner wall of the recovery box 1. The inner wall of the recovery box 1 has mounting grooves on both sides, with the edges slidingly adapted to the outer wall of the skimming belt body 414. The sum of the inner wall width of the recovery box 1 and the depth of the two mounting grooves is adapted to the length of the drive pulley 411 or the driven pulley 413. Through the above arrangement, the skimming belt body 414 separates the oil removal chamber 15. During use, the floating oil is located on the side with a gentler slope of the skimming belt body 414, thereby effectively reducing the floating oil content on the other side of the skimming belt body 414 in conjunction with the skimming effect of the skimming belt body 414, and preventing the floating oil from being discharged when the overflow port on the baffle plate 45 drains water.

[0038] Please see Figure 1-2 As shown, the multi-stage filtration and oil recovery equipment for coolant with concentration compensation also includes an oil storage structure 5. The oil storage structure 5 includes a mounting frame 51 and an oil storage box 52. The mounting frame 51 is installed on one side of the recovery tank 1 along its length and corresponds to the position of the oil drain pipe 44. The oil storage box 52 is horizontally slidably installed in the mounting frame 51 and has an opening at the top. The oil storage box 52 is located below the oil drain pipe 44 so as to collect the waste oil skimmed off by the skimming strip component 41 using the oil storage box 52.

[0039] Please see Figure 1-2 As shown, the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation also includes a concentration detection component 8 and a pumping structure 9, which are installed inside the water storage chamber 16. The concentration detection component 8 is used to detect the concentration of the liquid in the water storage chamber 16, and the pumping structure 9 is installed outside the recovery tank 1 and extends into the water storage chamber 16. This is so that when the concentration detection component 8 detects that the liquid concentration in the water storage chamber 16 meets the usage requirements, the pumping structure 9 can pump the liquid out of the water storage chamber 16.

[0040] As a preferred embodiment of the above scheme, the concentration detection component 8 is an online refractometer or a multi-parameter sensor system. When the concentration detection component 8 is a multi-parameter sensor system, the concentration detection component 8 includes an online refractometer, a pH sensor, a conductivity sensor, a liquid level sensor, and a temperature sensor, which are suitable for detecting the concentration of liquid in the water storage chamber 16.

[0041] Please see Figure 1-2 As shown, the concentration replenishment structure 6 includes a storage cylinder 61, a nozzle 62, an electric push rod 63, and a piston 64. The storage cylinder 61 is installed on the top wall inside the water storage chamber 16. The nozzle 62 is installed at one end of the length direction of the storage cylinder 61. The electric push rod 63 is installed inside the storage cylinder 61 and on the side away from the nozzle 62. The piston 64 is installed at the output end of the electric push rod 63. The storage cylinder 61 is used to store the medicine solution.

[0042] As a further description of the above scheme, the liquid storage cylinder 61 stores the liquid medicine. By operating the electric push rod 63 to drive the piston 64, the liquid medicine can be squeezed and sprayed out from the nozzle 62. The liquid medicine flowing into the water storage chamber 16 can achieve the effect of adjusting the liquid concentration by contacting the liquid.

[0043] As a preferred option of the above scheme, the liquid medicine stored in the storage tank 61 needs to be configured according to the difference in the cost content of each component of the coolant before and after actual use in different scenarios. If the concentration of the coolant increases after use, the proportion of water is increased when preparing the liquid medicine. If the concentration of the coolant decreases after use, the proportion of each component in the liquid medicine is adjusted according to the reduction of each cost content after calculation.

[0044] As a further preferred embodiment of the above solution, this application provides a replenishing component 19 extending into the storage cylinder 61 on one side of the width direction of the recycling box 1. The replenishing component 19 includes a connecting pipe and a one-way valve for adding medicine to the storage cylinder 61 through the connecting pipe, while the one-way valve can prevent the medicine from flowing out from the connecting pipe.

[0045] Please see Figure 2 As shown, the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation also includes a stirring structure 7. The stirring structure 7 includes a fixed plate 71, a second drive component 72, and a stirring blade 73. The fixed plate 71 is vertically installed in the water storage chamber 16, the second drive component 72 is installed on one side of the fixed plate 71, and the stirring blade 73 is installed at the output end of the second drive component 72 and located on the other side of the fixed plate 71.

[0046] As a preferred embodiment of the above scheme, the stirring blade 73 includes a stirring shaft and blades installed on the outside of the stirring shaft. The stirring blade 73 is driven to rotate by the second driving member 72, which can stir the liquid in the water storage chamber 16, thereby mixing the medicine with the liquid in the water storage chamber 16.

[0047] As another preferred embodiment of the above solution, this application provides a display component 18 connected to the concentration detection component 8 on one side of the width direction of the recycling box 1, so as to display the current detection data of the concentration detection component 8 and the advancing distance of the electric push rod 63 through the display component 18, so that the user can know the liquid concentration in the water storage chamber 16 and the amount of remaining medicine in the liquid storage cylinder 61.

[0048] It should be noted that the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation also includes a control component 10. The control component 10 includes a processor for data processing and analysis and a memory for storing the running program, so that the processor can control the operation of each electrical component according to the stored program, thereby improving the automation level of the equipment.

[0049] The working process of the above-mentioned multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation is as follows: When in use, the multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation can allow the used coolant to carry debris into the filter box 23 inside the recovery tank 1 through the discharge port 12. The filter box 23, together with the slag baffle 22, can intercept solid impurities in the liquid and allow the liquid to flow into the filter chamber 13. The fine filtration structure 3 with a multi-stage membrane filtration structure can perform secondary filtration on the liquid to intercept micron-sized metal powder and grinding wheel debris particles through high-precision filter media, further reducing impurities in the liquid. Afterwards, the filtered liquid flows into the oil removal chamber 15 through the flow buffer 34. The oil removal structure 4 in the oil removal chamber 15 can skim off the floating oil on the surface of the liquid by the operation of the skimming belt component 41, so as to effectively remove the impurities in the liquid. It also works with the oil storage structure 5 to collect the impurities for subsequent processing. In addition, the oil-removed liquid can flow into the water storage chamber 16. The concentration detection component 8 can detect the concentration of the liquid in the water storage chamber 16, so that the concentration replenishment structure 6 can replenish the liquid in the water storage chamber 16 according to the detection result. With the stirring and mixing action of the stirring structure 7, the liquid concentration can meet the usage requirements. At this time, the water pumping structure 9 can extract the liquid in the water storage chamber 16 for use, so as to maximize the restoration of the physical and chemical properties of the coolant and extend its service life several times.

[0050] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A multi-stage filtration and oil removal recovery device for coolant with concentration compensation, characterized in that, It includes a recovery box (1), a coarse filter structure (2) that is slidably installed on one side of the recovery box (1) in the width direction, a fine filter structure (3) and an oil removal structure (4) installed inside the recovery box (1) and located below the coarse filter structure (2), and a concentration replenishment structure (6) installed inside the recovery box (1) and located below the fine filter structure (3) and the oil removal structure (4). The fine filtration structure (3) includes a mounting plate (31) vertically installed in the recovery box (1), a plurality of water inlet plates (32) fixedly installed on one side of the mounting plate (31), a membrane filter element (33) installed on the top of each water inlet plate (32), and a flow buffer plate (34) fixedly installed on the bottom of the mounting plate (31). The oil removal structure (4) is located on the side of the mounting plate (31) away from the water inlet plates (32). The oil removal structure (4) includes an oil collecting plate (42) installed in the recovery box (1) along the width direction of the recovery box (1), an oil scraper (43) installed on the side of the oil collecting plate (42) near the inner wall of the recovery box (1), an oil skimming band component (41) installed in the recovery box (1) for absorbing floating oil, an oil drain pipe (44) installed on the recovery box (1) and located at the bottom of the oil collecting plate (42), and a water baffle (45) installed at the bottom of the oil collecting plate (42). A part of the oil skimming band component (41) is located above the oil collecting plate (42), and another part is located on the side of the oil collecting plate (42) away from the oil scraper (43). The top of the oil scraper (43) is attached to the oil skimming band component (41). The top of the water baffle (45) is provided with an overflow port.

2. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 1, characterized in that, The recycling box (1) is provided with multiple cavities, including a sliding cavity (11) opened on one side of the recycling box (1) in the width direction, a filter cavity (13) and an oil removal cavity (15) located below the recycling box (1) and at the same horizontal height, and a water storage cavity (16) located below the filter cavity (13) and the oil removal cavity (15). The filter cavity (13) and the oil removal cavity (15) are located on both sides of the mounting plate (31). The fine filtration structure (3) is located in the filter cavity (13), and the oil removal structure (4) is located in the oil removal cavity (15).

3. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 2, characterized in that, The coarse filter structure (2) includes a movable box (21) that is horizontally slidably installed in the sliding cavity (11) and has an open top, a slag-blocking plate (22) that is vertically installed in the movable box (21) and divides the movable box (21) into two parts, and a filter box (23) installed in the movable box (21) and located on one side of the slag-blocking plate (22). The top of the recovery box (1) is provided with a discharge port (12), and the discharge port (12) is located above the side of the slag-blocking plate (22) away from the filter box (23).

4. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 3, characterized in that, The recycling tank (1) is provided with a first communication port (14) located between the sliding cavity (11) and the filter cavity (13), and the recycling tank (1) is provided with a second communication port (17) located between the oil removal cavity (15) and the water storage cavity (16), and the second communication port (17) is located on the side of the baffle plate (45) away from the skimming strip component (41).

5. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 1, characterized in that, The skimming belt component (41) includes a drive pulley (411) rotatably mounted above the scraper plate (43), a first drive member (412) mounted on one side of the width direction of the recovery box (1) and used to drive the drive pulley (411) to rotate, two driven pulleys (413) mounted on the side of the oil collecting plate (42) away from the scraper plate (43), and a skimming belt body (414) fitted on the outside of the drive pulley (411) and the driven pulleys (413), with the top of the scraper plate (43) attached to the skimming belt body (414).

6. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 1, characterized in that, It also includes an oil storage structure (5), which includes an installation frame (51) installed on one side of the length direction of the recovery box (1) and corresponding to the position of the oil drain pipe (44) and an oil storage box (52) that is horizontally slidably installed in the installation frame (51) and has an open top. The oil storage box (52) is located below the oil drain pipe (44).

7. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 2, characterized in that, It also includes a concentration detection component (8) and a pumping structure (9), which are installed in the water storage chamber (16). The concentration detection component (8) is used to detect the concentration of the liquid in the water storage chamber (16), and the pumping structure (9) is installed on the outside of the recycling box (1) and extends into the water storage chamber (16).

8. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 2, characterized in that, The concentration replenishment structure (6) includes a liquid storage cylinder (61) installed on the top wall of the water storage chamber (16), a nozzle (62) installed at one end of the liquid storage cylinder (61) along its length, an electric push rod (63) installed inside the liquid storage cylinder (61) and away from the nozzle (62), and a piston (64) installed at the output end of the electric push rod (63). The liquid storage cylinder (61) is used to store the medicine solution.

9. The multi-stage filtration and oil removal recovery equipment for coolant with concentration compensation according to claim 2, characterized in that, It also includes a stirring structure (7), which includes a fixed plate (71) installed vertically in the water storage chamber (16), a second drive member (72) installed on one side of the fixed plate (71), and a stirring blade (73) installed at the output end of the second drive member (72) and located on the other side of the fixed plate (71).

Images