Oil-water separation device for numerical control machine tool

Abstract

The invention relates to the technical field of oil-water separation, and provides an oil-water separation device for a numerical control machine tool, the oil-water separation device comprises a machine body, the machine body is internally provided with a separation bin and an oil storage box, the separation bin comprises a front bin and a middle bin, and the upper end of the front bin is fixedly provided with a top plate; and an oil scraping disc for sticking grease and an oil scraping plate for scraping the grease on the oil scraping disc are erected and mounted at the upper end of the top plate. The two second rotating discs and the first rotating disc are kneaded through the oil scraping plate, under extrusion of the first rotating disc and the second rotating discs, the oil scraping plate is used for thoroughly scraping off grease mixed liquid attached to the surfaces of the first rotating disc and the second rotating discs, and meanwhile the oil dirt removing efficiency can be improved by extruding oil dirt when the second rotating discs and the first rotating disc are folded; when oil stains are located between the first rotating disc and the second rotating disc, counter-acting force on the second rotating disc can be generated, so that the second rotating disc is pushed to make contact with the oil scraping plate all the time, and the oil stain scraping effect is prevented from being affected by abrasion of the oil scraping plate and the oil scraping disc.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-water separation, and particularly to an oil-water separation device for a numerical control machine tool. Background Art

[0002] During the process of machining parts by a machine tool, a cutting fluid is required to assist in machining the parts. The generated waste liquid is generally separated by an oil-water separator to recover the cutting fluid. Currently, the oil-water separator mainly uses a turntable, two scraping plates, and an oil-water separator to separate the cutting fluid and oily substances. Since only one turntable is used, the contact area between the turntable and the mixed liquid is too small. Moreover, since the mixed liquid is always in a static state inside, the oil in the mixed liquid cannot continuously contact the turntable, resulting in an unsatisfactory oil removal effect of the turntable.

[0003] And drain ports are provided at the bottoms of the front chamber and the middle chamber for discharging the cutting fluid at the lower layer. When the separation of the device is about to be completed, there is still some oil stain in the remaining liquid at the bottom of the front chamber, but at this time, the liquid level height is no longer sufficient to contact the turntable. Therefore, there will be a small amount of oil-containing mixed liquid that has not been treated. Direct discharge of this part of the accumulated liquid will still cause environmental pollution. Moreover, when the middle chamber of the separator is in use, the oil stain containing cutting fluid in the middle chamber accumulates continuously. As the oil stain at the upper layer accumulates and overflows the oil outlet, it will gradually be discharged. During this process, if the proportion of the cutting fluid is relatively high, after the height of the oil suction pipe is determined, the cutting fluid at the lower layer will be sucked out, resulting in the loss of the cutting fluid. If the proportion of the oil is relatively high, the part of the oil stain that has not reached the height of the oil suction pipe cannot be discharged, resulting in incomplete oil-water separation.

[0004] Therefore, we make improvements on this and propose an oil-water separation device for a numerical control machine tool. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil-water separation device for a numerical control machine tool to solve the problems raised in the above background art.

[0006] To achieve the above-mentioned invention object, the present invention provides an oil-water separation device for a numerical control machine tool, including a machine body. A separation chamber and an oil storage box are arranged inside the machine body. The separation chamber includes a front chamber and a middle chamber. A top plate is fixedly installed at the upper end of the front chamber. An oil scraping disc for sticking and carrying grease and an oil scraping plate for scraping the grease on the oil scraping disc are installed on the upper end of the top plate. Two support frames are installed on both sides inside the middle chamber. A plurality of connecting rods are connected between the two support frames. A first sliding side plate and a second sliding side plate slidably installed with the top plate are sleeved on the connecting rods. A folding inner cylinder is connected between the first sliding side plate and the second sliding side plate. The oil scraping disc is centrally installed above the folding inner cylinder. An adjusting mechanism is installed inside the middle chamber. The adjusting mechanism includes an outer tube. A water inlet is opened at the bottom end of the outer tube. An inner piston rod is sleeved inside the outer tube. Two O-ring seals are installed at the lower end of the cylindrical surface of the inner piston rod. A handle is installed at the upper end of the inner piston rod.

[0007] As a further scheme of the present invention, a through hole is centrally opened in the middle of the top plate. The through hole has three branches. A liquid inlet hole is opened on the top plate. A sealed box is fixedly connected to the liquid inlet hole.

[0008] As a further scheme of the present invention, two springs are connected between the first sliding side plate and the second sliding side plate. Electric push rods are connected between the first sliding side plate and the front chamber and between the second sliding side plate and the front chamber respectively.

[0009] As a further scheme of the present invention, two slide rails are symmetrically installed on the bottom surface of the top plate. Sliders are installed at both ends of the top of the first sliding side plate and the second sliding side plate. The slide rails and the sliders are sleeved and installed. The folding inner cylinder is U-shaped at the bottom as a whole, and both sides of the folding inner cylinder are symmetrically connected to the first sliding side plate and the second sliding side plate through folds. A liquid outlet pipe is centrally connected to the bottom end of the folding inner cylinder.

[0010] As a further scheme of the present invention, the oil scraping disc includes a motor. A first turntable is fixedly connected to the output shaft of the motor. Two conical second turntables are symmetrically connected to both sides of the first turntable. The oil scraping plate pinches the two second turntables and the first turntable. A certain gap is provided between the oil scraping plate and the surface of the second turntable.

[0011] As a further scheme of the present invention, the oil scraping plate includes a scraping plate. A scraping groove is opened in the middle of the scraping plate. The scraping groove is clamped on one side of the oil scraping disc, and the inner end groove opening of the scraping groove is set as a T shape.

[0012] As a further scheme of the present invention, the first turntable includes a rotating disc. A plurality of snap rings are arranged on the circumference of the rotating disc. A convex block is arranged in the middle of the rotating disc.

[0013] As a further solution of the present invention, the second turntable includes an auxiliary disk, a bushing is arranged in the middle of the auxiliary disk, the bushing is rotatably connected to the convex block, and a plurality of grooves adapted to the snap ring are arranged on the circumference of the auxiliary disk.

[0014] As a further solution of the present invention, a raised edge ring is arranged at the edge of the second turntable, and the raised edge ring is stuck inside the T-shaped notch for limiting.

[0015] The oil-water separation device for a numerical control machine tool provided by the present invention has the following beneficial effects: 1. By erecting an oil scraping plate, a first turntable and two symmetric second turntables above the separation chamber, the lower parts of the first turntable and the second turntables pass through the through holes and are immersed in the folded inner cylinder, and contact the cutting fluid mixture inside the folded inner cylinder. The second turntable is made of oil-resistant rubber, which increases the contact area with the grease in the mixture. And the oil scraping plate pinches the two second turntables and the first turntable. Under the extrusion of the first turntable and the second turntables, the oil scraping plate thoroughly scrapes off the grease mixture adhered to the surfaces of the first turntable and the second turntables. At the same time, when the second turntable and the first turntable close together, the extrusion of the oil stain can increase the cleaning efficiency of the oil stain. Secondly, when the oil stain is between the first turntable and the second turntable, a reaction force on the second turntable will be generated, thereby pushing the second turntable to always contact the oil scraping plate, avoiding the wear of the oil scraping plate and the oil scraping disk and affecting the scraping effect of the oil stain.

[0016] 2. By arranging an adjusting mechanism inside the middle chamber, the cutting fluid mixture containing less after being separated by the oil scraping plate and the oil scraping disk enters the middle chamber. When performing the second separation, if the proportion of water is high, the inner piston rod is lifted to lower the liquid level of the grease in the mixture inside the middle chamber, avoiding the suction pipe from sucking out the cutting fluid at the bottom. If the proportion of water is low, the inner piston rod is lowered to raise the liquid level of the grease in the mixture inside the middle chamber, avoiding the grease remaining at the bottom of the middle chamber, thereby ensuring the thoroughness of the oil-water separation and avoiding the re-mixing of the separated oil-water mixture.

[0017] 3. By arranging a sliding first sliding side plate and a second sliding side plate inside the front chamber, and a folded inner cylinder is foldably connected between the first sliding side plate and the second sliding side plate. At the end of the treatment of the cutting fluid mixture, as the mixture gradually becomes less, the first sliding side plate and the second sliding side plate are pushed by the electric push rod to control the volume inside the folded inner cylinder, and the grease on the upper layer of the mixture in the middle of the folded inner cylinder is continuously brought closer to the oil scraping disk, facilitating the oil scraping disk to adsorb the grease, ensuring the thorough separation of oil and water and guaranteeing the separation efficiency. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 The overall schematic diagram of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 2 The structural schematic diagram of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 3 The structural schematic diagram of the separation chamber of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 4 The structural schematic diagram of the adjustment mechanism of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 5 The sectional view of the separation chamber of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 6 The exploded schematic diagram of a partial structure of the separation chamber of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 7 The structural schematic diagram of the oil scraping plate of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 8 The structural schematic diagram of the folding inner cylinder of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 9 The structural schematic diagram of the oil scraping disc of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 10 The sectional schematic diagram of the oil scraping disc of an oil-water separation device for a numerically controlled machine tool provided by this application; Figure 11 For Figure 10 The enlarged schematic diagram of the structure at position A.

[0020] In the figure: 1. Machine body; 2. Separation chamber; 21. Front chamber; 22. Middle chamber; 23. Support frame; 24. Connecting rod; 25. First sliding side plate; 26. Second sliding side plate; 27. Electric push rod; 28. Folding inner cylinder; 29. Liquid outlet pipe; 210. Spring; 211. Slide rail; 212. Slide block; 213. Top plate; 214. Through hole; 215. Liquid inlet hole; 3. Adjusting mechanism; 31. Outer pipe; 32. Water inlet; 33. Inner piston rod; 34. O-ring; 35. Handle; 4. Oil storage box; 5. Oil scraping plate; 51. Scraping plate; 52. Scraping groove; 6. Oil scraping disc; 61. Motor; 62. First turntable; 621. Rotating disc; 622. Snap ring; 623. Protrusion; 63. Second turntable; 631. Auxiliary disc; 632. Casing; 633. Groove. Detailed implementation manner

[0021] The following combines the specification drawings and embodiments to further describe in detail the specific implementation manner of the present invention. The following embodiments are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] As Figures 1-11 shown, this embodiment proposes an oil-water separation device for a numerical control machine tool, including a machine body 1. Inside the machine body 1, there are arranged a separation chamber 2 and an oil storage box 4. The separation chamber 2 includes a front chamber 21 and a middle chamber 22. At the upper end of the front chamber 21, a top plate 213 is fixedly installed. Above the top plate 213, there are installed an oil scraping disc 6 for sticking grease and an oil scraping plate 5 for scraping the grease off the oil scraping disc 6. On both sides inside the middle chamber 22, two support frames 23 are installed. Between the two support frames 23, a plurality of connecting rods 24 are connected. A first sliding side plate 25 and a second sliding side plate 26 that are slidably installed with the top plate 213 are sleeved on the connecting rods 24. A folding inner cylinder 28 is connected between the first sliding side plate 25 and the second sliding side plate 26. The oil scraping disc 6 is installed in the middle above the folding inner cylinder 28. An adjusting mechanism 3 is installed inside the middle chamber 22. The adjusting mechanism 3 includes an outer pipe 31. At the bottom end of the outer pipe 31, a water inlet 32 is opened. An inner piston rod 33 is sleeved inside the outer pipe 31. Two O-rings 34 are installed at the lower end of the cylindrical surface of the inner piston rod 33. A handle 35 is installed at the upper end of the inner piston rod 33.

[0023] A through hole 214 is centrally opened in the middle of the top plate 213. The through hole 214 has three branches. A liquid inlet hole 215 is opened on the top plate 213. A sealing box is fixedly connected to the liquid inlet hole 215. The first turntable 62 and two second turntables 63 respectively pass through the three branches of the through hole 214 and immerse into the mixed liquid inside the folding inner cylinder 28 below the top plate 213, facilitating the treatment of the oil stain in the mixed liquid.

[0024] There are two springs 210 connected between the first sliding side plate 25 and the second sliding side plate 26. Electric push rods 27 are connected between the first sliding side plate 25 and the front bin 21, and between the second sliding side plate 26 and the front bin 21. The electric push rods 27 push the first sliding side plate 25 and the second sliding side plate 26 inward or outward simultaneously, thereby adjusting the width of the folding inner cylinder 28 and controlling the volume of the folding inner cylinder 28, facilitating the mixture to always be in contact with the oil scraping plate 6, and ensuring the treatment quality of the mixture by the device.

[0025] Two slide rails 211 are symmetrically installed on the bottom surface of the top plate 213. Sliders 212 are installed at both ends of the top of the first sliding side plate 25 and the second sliding side plate 26. The slide rails 211 are sleeved with the sliders 212. The folding inner cylinder 28 is U-shaped at the bottom as a whole, and both sides of the folding inner cylinder 28 are symmetrically connected to the first sliding side plate 25 and the second sliding side plate 26 through pleated folding connections. A liquid outlet pipe 29 is centrally connected to the bottom end of the folding inner cylinder 28. The sleeving of the slide rails 211 and the sliders 212 ensures the smooth sliding of the first sliding side plate 25 and the second sliding side plate 26. The pleated design of the folding inner cylinder 28 can reduce the width of the folding inner cylinder 28 as the mixture decreases at the end of the mixture treatment, thereby reducing the volume of the folding inner cylinder 28, enabling the small amount of mixture inside the folding inner cylinder 28 to still contact the oil scraping plate 6, and performing oil stain adsorption treatment through the oil scraping plate 6, thoroughly treating the mixture, and improving the treatment efficiency of the mixture.

[0026] The oil scraping plate 6 includes a motor 61. A first turntable 62 is fixedly connected to the output shaft of the motor 61. Two conical second turntables 63 are symmetrically connected to both sides of the first turntable 62. The oil scraping plate 5 pinches the two second turntables 63 and the first turntable 62. There is a certain gap between the oil scraping plate 5 and the surface of the second turntable 63. Two second turntables 63 are respectively arranged on both sides of the first turntable 62, facilitating increasing the adhesion ability to oil stains and enhancing the separation effect of oil stains. When the first turntable 62 and the second turntables 63 pass through the oil scraping plate 5, they close. The extrusion generated during closing can also remove the oil stains carried on the first turntable 62 and the second turntables 63. At the same time, due to the existence of some oil stains between the first turntable 62 and the second turntables 63, the existence of the oil stains will generate a thrust on the second turntable 63, enabling the second turntable 63 to always remain in contact with the oil scraping plate 5, thereby compensating for the error caused by continuous friction of the second turntable 63 and avoiding the influence of the wear between the oil scraping plate 5 and the oil scraping plate 6 on the oil stain scraping effect.

[0027] The oil scraping plate 5 includes a scraping plate 51. A scraping groove 52 is opened in the middle of the scraping plate 51. The scraping groove 52 is clamped on one side of the oil scraping plate 6, and the inner end of the scraping groove 52 is T-shaped. The oil scraping plate 5 clamps and squeezes the oil scraping plate 6, scrapes off the oil stains carried on the surface of the oil scraping plate 6, and the oil stains fall along the inclined surface of the scraping plate 51 into the middle bin 22 for layering, facilitating the secondary treatment of the oil-water mixture.

[0028] The first turntable 62 includes a rotating disk 621. A plurality of snap rings 622 are arranged on the circumference of the rotating disk 621, and a convex block 623 is arranged in the middle of the rotating disk 621. The second turntable 63 includes an auxiliary disk 631. A bushing 632 is arranged in the middle of the auxiliary disk 631. The bushing 632 is rotatably connected to the convex block 623. A plurality of grooves 633 adapted to the snap rings 622 are arranged on the circumference of the auxiliary disk 631. The first turntable 62 and the second turntable 63 are rotatably connected through the bushing 632 and the convex block 623, and the snap rings 622 are correspondingly pressed into the grooves 633, so that the first turntable 62 and the second turntable 63 are engaged with each other, ensuring the synchronous rotation of the first turntable 62 and the second turntable 63, and improving the oil scraping and oil squeezing effects of the first turntable 62 and the second turntable 63.

[0029] A raised edge ring is arranged at the edge of the second turntable 63. The raised edge ring is stuck inside the T-shaped notch for limiting. The protrusion at the edge of the second turntable 63 is stuck with the scraping groove 52, ensuring the synchronous rotation of the first turntable 62 and the second turntable 63, preventing the second turntable 63 from coming out, and ensuring the oil scraping effect of the first turntable 62 and the second turntable 63.

[0030] Specifically, when the oil-water separation device for this numerical control machine tool is in use: the rotation of the oil scraping disk 6 directly brings out the oil stain. Then, the oil stain on the surface of the oil scraping disk 6 is scraped by the oil scraping plate 5, and flows into the middle bin 22 by the gravity of the oil stain itself. Stratification is carried out through the density difference between oil and water. Among them, the oil stain and the cutting fluid will gradually accumulate after entering the middle bin 22. When the floating oil overflows to the oil outlet, it will flow into the oil storage box 4. As the oil stain is discharged, the cutting fluid at the bottom is discharged through the water outlet hose. During this process, if the proportion of water is relatively high, the inner piston rod 33 is lifted to lower the liquid level of the grease in the mixed liquid inside the middle bin 22, preventing the oil suction pipe from sucking out the cutting fluid at the bottom. If the proportion of water is relatively low, the inner piston rod 33 is lowered to raise the liquid level of the grease in the mixed liquid inside the middle bin 22, preventing the grease from remaining at the bottom of the middle bin 22, thereby ensuring the thoroughness of oil-water separation and preventing the re-mixing of the separated oil-water mixture. At the end of the treatment of the cutting fluid mixture, as the mixture gradually becomes less, the first sliding side plate 25 and the second sliding side plate 26 are pushed by the electric push rod 27 to control the volume inside the folding inner cylinder 28, so that the grease on the upper layer of the mixed liquid in the middle of the folding inner cylinder 28 is continuously close to the oil scraping disk 6, facilitating the adsorption of the grease by the oil scraping disk 6, ensuring the thorough separation of oil and water, guaranteeing the separation efficiency, the cutting fluid flows back to the machine tool liquid storage tank, saving the production cost of the enterprise. At the same time, the whole separator has a simple structure and a low manufacturing cost, but the oil removal effect is better and the efficiency is higher than that of known similar equipment. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0031] The above embodiments are only used to illustrate the present invention, rather than limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered within the scope of the claims of the present invention.

Claims

1. An oil-water separation device for a CNC machine tool, comprising a body (1), characterized in that: A separation chamber (2) and an oil storage box (4) are arranged inside the fuselage (1), the separation chamber (2) comprising a front chamber (21) and a middle chamber (22), a top plate (213) being fixedly mounted on the upper end of the front chamber (21), an oil scraper plate (6) for sticking grease and an oil scraper plate (5) for scraping grease off the oil scraper plate (6) being mounted on the upper end of the top chamber (213), two support frames (23) being mounted on both sides of the inside of the middle chamber (22), a plurality of connecting rods (24) being connected between the two support frames (23), a first sliding side plate (213) being sleeved on the connecting rods (24) and being slidably mounted on the top chamber (213) 5) and a second sliding side plate (26), a folding inner cylinder (28) is connected between the first sliding side plate (25) and the second sliding side plate (26), the oil scraper plate (6) is centrally installed above the folding inner cylinder (28), an adjusting mechanism (3) is installed inside the middle bin (22), the adjusting mechanism (3) comprises an outer tube (31), a water inlet (32) is provided at the bottom end of the outer tube (31), an inner piston rod (33) is sleeved inside the outer tube (31), two O-rings (34) are installed at the lower end of the cylindrical surface of the inner piston rod (33), and a handle (35) is installed at the upper end of the inner piston rod (33).

2. The oil-water separation device for a CNC machine tool according to claim 1, characterized in that: A through hole (214) is provided in the middle of the top plate (213), and the through hole (214) is provided with three branches. A liquid inlet hole (215) is provided on the top plate (213), and a sealing box is fixedly connected to the liquid inlet hole (215).

3. The oil-water separation device for a CNC machine tool according to claim 1, characterized in that: Two springs (210) are connected between the first sliding side plate (25) and the second sliding side plate (26), and electric push rods (27) are connected between the first sliding side plate (25) and the front bin (21), and between the second sliding side plate (26) and the front bin (21).

4. The oil-water separation device for a CNC machine tool according to claim 1, characterized in that: Two slide rails (211) are symmetrically mounted on the bottom surface of the top plate (213); sliders (212) are mounted on both ends of the top of the first sliding side plate (25) and the second sliding side plate (26); the slide rails (211) and the sliders (212) are sleeved and mounted; the folding inner cylinder (28) is U-shaped at the bottom as a whole; and the two sides of the folding inner cylinder (28) are symmetrically connected to the first sliding side plate (25) and the second sliding side plate (26) by folding; and a liquid outlet pipe (29) is centrally connected to the bottom end of the folding inner cylinder (28).

5. The oil-water separation device for a CNC machine tool according to claim 1, characterized in that: The oil scraper plate (6) comprises a motor (61), a first rotating disk (62) being fixedly connected to the output shaft of the motor (61), two conical second rotating disks (63) being symmetrically connected to the two sides of the first rotating disk (62), and the oil scraper plate (5) kneading the two second rotating disks (63) and the first rotating disk (62), and a certain gap is provided between the surfaces of the oil scraper plate (5) and the second rotating disks (63).

6. The oil-water separation device for a CNC machine tool according to claim 1, characterized in that: The oil scraper plate (5) comprises a scraper plate (51), a scraper groove (52) is provided in the middle of the scraper plate (51), the scraper groove (52) is clamped on one side of the oil scraper plate (6), and the notch at the inner end of the scraper groove (52) is arranged in a T shape.

7. The oil-water separation device for a CNC machine tool according to claim 5, characterized in that: The first rotating disk (62) comprises a rotating disk (621), a plurality of snap rings (622) are arranged on the circumference of the rotating disk (621), and a protrusion (623) is arranged in the middle of the rotating disk (621).

8. The oil-water separation device for a CNC machine tool according to claim 5, characterized in that: The second rotating disk (63) comprises an auxiliary disk (631), a clamping sleeve (632) is arranged in the middle of the auxiliary disk (631), the clamping sleeve (632) is rotatably connected to the protrusion (623), and a plurality of grooves (633) adapted to the clamping ring (622) are arranged on the circumference of the auxiliary disk (631).

9. The oil-water separation device for a CNC machine tool according to claim 5, characterized in that: A raised edge ring is provided at the edge of the second rotating disk (63), and the raised edge ring is clamped inside the T-shaped notch for position limiting.

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