An oil slick removal device for centralized treatment of cutting fluid

Abstract

The present invention relates to the field of machining, and more specifically, to an apparatus for removing floating oil in centralized treatment of cutting fluid. An apparatus for removing floating oil in centralized treatment of cutting fluid, comprising a water tank containing cutting fluid with floating oil floating on the cutting fluid, and including: a skimmer, a filter, a hose, a separation tank, and a diaphragm pump; the skimmer is arranged in the water tank and floats on the liquid surface of the cutting fluid; the liquid inlet of the filter is connected to the skimmer by the hose, and the filter is fixed on the side wall of the outer shell of the separation tank; the diaphragm pump is fixed at the outer bottom of the separation tank, the input port of the diaphragm pump is docked with the liquid outlet of the filter, and the output port is connected with a liquid inlet pipe which passes through the bottom of the separation tank and enters the interior of the separation tank. The apparatus can be directly installed on the water tank, operates stably continuously, and has a small amount of waste liquid.

Description

Technical Field

[0001] The present invention relates to the field of machining, and more specifically, to an oil skimming device for centralized treatment of cutting fluid. Background Art

[0002] Cutting fluid is a key substance for tool cooling, chip removal, and cleaning in machining. Cutting fluid has high requirements for concentration and cleanliness. A large amount of lubricating oil is used on machine tools, and waste lubricating oil and oil leakage are likely to enter the cutting fluid circulation system, polluting the cutting fluid, causing the cutting fluid to deteriorate, especially a decrease in concentration and poor rust prevention performance.

[0003] Currently, the mainstream filtering and removing devices on the market are mainly belt-type oil-water separators, vortex separators, oil scraping discs, etc. These separators mainly rely on the rotation of a steel belt or an oil scraping disc, being immersed in a part of the cutting fluid and then rotated out. During the process, floating oil will adhere to it. After leaving the liquid surface, the floating oil is scraped off by a scraper to achieve the separation purpose. It works well in the cutting fluid circulation system of a single device itself, but in the centralized filtering and supply system of cutting fluid for multiple devices in a workshop, the cleaning efficiency is low, the reliability of continuous operation is poor, and the oil-water separation is not thorough. Summary of the Invention

[0004] In view of the main disadvantages of the scraping-type oil skimming machine, the present invention provides an oil skimming device for centralized treatment of cutting fluid, adopting a self-flow structure, and solving the problem of difficult oil skimming in the centralized filtering, cleaning, and continuous supply system of cutting fluid for multiple devices in a machining workshop.

[0005] The object of the present invention is achieved as follows. An oil skimming device for centralized treatment of cutting fluid, comprising a water tank containing cutting fluid with floating oil on the cutting fluid, including: a skimmer, a filter, a hose, a separation tank, and a diaphragm pump; the skimmer is arranged in the water tank and floats on the liquid surface of the cutting fluid; the inlet of the filter is connected to the skimmer by the hose, and the filter is fixed on the side wall of the outer shell of the separation tank; the diaphragm pump is fixed at the bottom outside the separation tank, the input port of the diaphragm pump is docked with the outlet of the filter, and the output port is connected with a liquid inlet pipe, and the liquid inlet pipe passes through the bottom of the separation tank and enters the inside of the separation tank.

[0006] Further, the skimmer includes a four-connected floating ball, an absorption pipe, and a positioning set screw; the four-connected floating ball has a centrosymmetric structure and is composed of a cross-shaped connecting rod and four floating balls. The four floating balls are respectively fixed at the four ends of the cross-shaped connecting rod. A hollow pipe is vertically arranged at the cross connection of the cross-shaped connecting rod. The absorption pipe passes through the hollow pipe and both ends extend out of the hollow pipe, and one end of which is connected to the hose; a positioning set screw is arranged on the outer wall of the hollow pipe.

[0007] Further, the skimmer further includes a skimming box, a shaft, and a hemmed opening; the skimming box has an upper opening, one side wall of the upper opening is provided with a hemmed opening, and the hem of the hemmed opening is a plane; the shaft is hinged to two adjacent side surfaces of the hemmed opening, the shaft is parallel to the hem and is higher than the hem in the vertical direction, and the other end of the straw passes through the shaft from the upper opening of the skimming box and extends into the interior of the skimming box, and is welded to the shaft; adjust and fix the straw with the positioning set screw so that the hem of the hemmed opening is flush with the liquid level of the cutting fluid.

[0008] Further, an outlet pipe and a return pipe are respectively provided above the two side walls of the separation box, and the lowest heights of the openings of the outlet pipe and the return pipe in the separation box are the same.

[0009] Further, the return pipe is connected to the inside of the water tank.

[0010] Further, an oil separation plate is obliquely arranged inside the separation box, the oil separation plate is connected to the top and side walls of the separation box, and divides its interior into a cutting fluid separation area and a floating oil separation area, and the bottoms of the cutting fluid separation area and the floating oil separation area are communicated, and the liquid inlet pipe of the output port of the diaphragm pump is connected to the floating oil separation area.

[0011] Further, the outlet pipe is located in the area where the floating oil separation area is located, and the return pipe is located in the area where the cutting fluid separation area is located.

[0012] Further, the diaphragm pump can also be fixed below the outer side wall of the separation box.

[0013] The separation box of the present invention adopts a self-flowing structure, which has a simple structure and a small body. It can effectively clean the floating oil, can be installed at any position of the cutting fluid centralized treatment water tank, operates continuously, and has a high cleaning efficiency. It solves the problem of difficult removal of floating oil in the centralized filtration and cleaning and continuous supply system of cutting fluid for multiple devices in the machining workshop. The hemmed opening of the skimmer is always flush with the cutting fluid liquid level, the cutting fluid content entering the skimmer is small, and the separation efficiency can reach more than 95%. The filter can effectively filter out other solid impurities, ensure the cleaning effect of the cutting fluid, and extend the service life of the cutting fluid. The only electric component, the diaphragm pump, has a small power, is overload-resistant, has no wear, operates stably, and has low power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an overall schematic diagram of an apparatus for removing floating oil from centralized treatment of cutting fluid according to the present invention;

[0015] Figure 2 is a front view of the skimmer of an apparatus for removing floating oil from centralized treatment of cutting fluid according to the present invention;

[0016] Figure 3 It is a top view of the skimmer of an oil slick removal device for centralized treatment of cutting fluid according to the present invention;

[0017] Figure 4 is an oil slick removal device for centralized treatment of cutting fluid according to the present invention Figure 3 The enlarged view of area E in it.

[0018] Accompanying drawings

[0019] 10 - water tank; 11 - cutting fluid; 20 - skimmer; 21 - four - joint floating ball; 22 - skimming box; 23 - suction pipe; 24 - shaft; 25 - positioning set screw; 26 - hemmed opening; 30 - filter; 31 - hose; 40 - separation tank; 41 - diaphragm pump; 42 - outlet pipe; 43 - cutting fluid area; 44 - floating oil separation area; 45 - oil - separating plate; 46 - return pipe. Detailed implementation manners

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that this structure must be completely horizontal, but can be slightly inclined.

[0022] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] The following will specifically describe an oil slick removal device for centralized treatment of cutting fluid according to the present invention with reference to the accompanying drawings. As Figure 1 and Figure 2The figure shows an oil skimming device for centralized treatment of cutting fluid according to the present invention. The cutting fluid 11 of multiple devices is collected in a water tank 10. There is floating oil on the cutting fluid 11 and it also contains other solid impurities. A skimmer 20 is arranged in the water tank 10 and floats on the liquid surface of the cutting fluid 11. The liquid inlet of a filter 30 and a suction pipe 23 on the skimmer 20 are connected by a hose 31. The filter 30 is fixed on the side wall of the outer shell of a separation tank 40. A diaphragm pump 41 is fixed at the outer bottom of the separation tank 40. The input port of the diaphragm pump 41 is docked with the liquid outlet of the filter 30, and the output port is connected with a liquid inlet pipe which passes through a round hole at the bottom of the separation tank 40 and enters the inside of the separation tank 40. It should be noted that the mixture of the cutting fluid 11 collected by the skimmer 20 is sealed during the process of entering the separation tank 40 to ensure that there is no liquid leakage during this process.

[0024] As Figure 2-4 shown, the skimmer 20 includes a four - joint floating ball 21, a skimming box 22, a suction pipe 23, a shaft 24, a positioning setscrew 25 and a hemmed opening 26. The four - joint floating ball 21 has a centrosymmetric structure and is composed of a cross - shaped connecting rod and four floating balls. The four floating balls are respectively fixed at the four ends of the cross - shaped connecting rod. A hollow tube is vertically arranged at the cross - connection of the cross - shaped connecting rod. The floating balls are made of a light - weight corrosion - resistant material and have good floating ability. Through - holes can be arranged in the direction perpendicular to the plane where the cross - shaped connecting rod is located at the four ends of the cross - shaped connecting rod, corresponding internal threads are machined on the floating balls, and the cross - shaped connecting rod is connected to the four floating balls with screws. The suction pipe 23 is longer than the hollow tube, passes through the hollow tube and both ends extend out of the hollow tube. One end of it is

[0025] connected to the hose 31; a positioning setscrew 25 is arranged on the outer wall of the hollow tube, and the positioning setscrew 25 extends into the inside of the hollow tube. The skimming box 22 has an upper opening. One side wall of the upper opening is provided with a hemmed opening 26, and the hem of the hemmed opening 26 is a plane. Round holes are correspondingly machined on two adjacent side faces of the hemmed opening 26. The height of the round holes in the vertical direction is higher than the hem. The shaft 24 is hinged to the two adjacent side faces of the hemmed opening 26 through the round holes, and the shaft 24 is parallel to the hem. The other end of the suction pipe 23 passes through the upper opening of the skimming box 22, passes through the shaft 24 and extends into the inside of the skimming box 22, and is welded to the shaft 24.

[0026] It should be noted that when the shaft 24 is installed on the skimming box 22, it is placed on the liquid surface of the cutting fluid 11, and the folded edge of the folded edge opening 26 is parallel to the liquid surface and slightly higher than the liquid surface. Since the shaft 24 is hinged to the skimming box 22, when the skimmer 20 is placed in the cutting fluid 11, the folded edge always remains parallel to the liquid surface. Adjust the position of the hollow tube and fix it with the positioning setscrew 25 to ensure that the folded edge of the folded edge opening 26 is flush with the liquid surface of the cutting fluid 11. The skimming box 22 and the shaft 24 can rotate relative to each other. When the liquid surface fluctuates, a large amount of cutting fluid can be prevented from flowing in during the process of skimming floating oil. The height of the skimming box 22 is preferably 100 mm, the depth of the suction pipe 23 extending into the skimming box 22 is preferably 50 mm, and the distance from the folded edge of the folded edge opening 26 to the top of the skimming box is preferably 10 mm. Since the four-connected floating ball 21 has good floating ability, when the mixture of the cutting fluid 11 containing floating oil enters the skimming box 22, the sinking height of the skimmer 20 can be ignored.

[0027] As Figure 1 shown, outlet pipes 42 and return pipes 46 are respectively provided above the two side walls of the separation box 40, and the lowest heights of the openings of the outlet pipes 42 and the return pipes 46 inside the separation box 40 are the same. And the other end of the return pipe 46 is connected into the inside of the water tank 10 to form a return flow. An oil separation plate 45 is also obliquely arranged inside the separation box 40. The oil separation plate 45 is connected to the top and side walls of the separation box 40, and divides its interior into a cutting fluid separation area 43 and a floating oil separation area 44. The bottom of the cutting fluid separation area 43 and the floating oil separation area 44 are communicated, and the inlet pipe of the output port of the diaphragm pump 41 is connected to the floating oil separation area 44. The outlet pipe 42 is located in the area where the floating oil separation area 44 is located, and the return pipe 46 is located in the area where the cutting fluid separation area 43 is located. The separation box 40 has a relatively small size and can be directly installed on the water tank 10.

[0028] During operation, install the floating oil removal device for centralized treatment of the cutting fluid of the present invention in place. Since the density of the floating oil is less than that of the cutting fluid 11, the floating oil will float on the surface of the cutting fluid 11. Because the folded edge of the folded edge opening 26 is horizontal with the liquid surface of the cutting fluid 11, the floating oil will enter the skimmer 20 along the folded edge opening 26. Turn on the diaphragm pump 41. At this time, the mixture of the cutting fluid 11 in the skimmer 20 enters the filter 30 through the hose 31, and the filter 30 can effectively remove particulate impurities in the floating oil. The diaphragm pump 41 runs slowly, and the cutting fluid 11 containing a large amount of floating oil enters the floating oil separation area 44 in the separation box 40, causing the liquid level inside the separation box to rise. Due to the different densities, the floating oil floats up, and the oil separation plate 45 separates the floating oil into the floating oil separation area 44. The floating oil flows into the waste liquid bucket through the outlet pipe 42, and the cutting fluid 11 enters the cutting fluid separation area 43 through the bottom of the separator 40 and returns to the static water tank 10 through the return pipe 46.

[0029] It should be noted that the separation tank 40 can be divided into two cavities, and the diaphragm pump 41 can also be built into the lower end of the separation tank 40; the diaphragm pump 41 can also be installed below the outer side wall of the separation tank 40. Both the separation tank 40 and the oil separation plate 45 are made of stainless steel. The diaphragm pump 41 is a small-power body with a processing capacity of 25 H / L, a power of about 25-30 W, and a slow running speed. The liquid in the separation tank 40 is in a steady flow state, and the suction rate of the diaphragm pump 41 is always greater than or equal to the rate at which the skimming box 22 collects the cutting fluid 11 containing a large amount of floating oil. Therefore, the situation of floating oil overflow will not occur in the skimming box 22. The diaphragm pump 41 has no shaft seal leakage, good passability, and automatically starts and stops after overloading.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An oil slick removal device for centralized treatment of cutting fluid, comprising a water tank (10) containing cutting fluid (11), with an oil slick floating on the cutting fluid (11), characterized in that, Including: A skimmer (20), a filter (30), a hose (31), a separation tank (40), and a diaphragm pump (41); the skimmer (20) is arranged in the water tank (10) and floats on the liquid surface of the cutting fluid (11); the inlet of the filter (30) is connected to the skimmer (20) by the hose (31), and the filter (30) is fixed to the side wall of the outer shell of the separation tank (40); the diaphragm pump (41) is fixed to the outer bottom of the separation tank (40), the input port of the diaphragm pump (41) is docked with the outlet of the filter (30), and the output port is connected with a liquid inlet pipe, and the liquid inlet pipe passes through the bottom of the separation tank (40) and enters the inside of the separation tank (40). The skimmer (20) includes a four - joint floating ball (21), a suction pipe (23), and a positioning setscrew (25); the four - joint floating ball (21) has a centrosymmetric structure and is composed of a cross - shaped connecting rod and four floating balls. A hollow tube is vertically arranged at the cross - connection of the cross - shaped connecting rod; the suction pipe (23) passes through the hollow tube and both ends extend out of the hollow tube, and one end is connected to the hose (31); a positioning setscrew (25) is arranged on the outer wall of the hollow tube. The skimmer (20) further includes a skimming box (22), a shaft (24), and a hemmed opening (26); the skimming box (22) has an upper opening, one side wall of the upper opening is provided with a hemmed opening (26), and the hem of the hemmed opening (26) is a plane; the shaft (24) is hinged to two adjacent side surfaces of the hemmed opening (26), the shaft (24) is parallel to the hem and is higher than the hem in the vertical direction. The other end of the suction pipe (23) passes through the upper opening of the skimming box (22), passes through the shaft (24), and extends into the inside of the skimming box (22), and is welded to the shaft (24); adjusting the positioning setscrew (25) fixes the suction pipe (23) so that the hem of the hemmed opening (26) is at the same level as the liquid surface of the cutting fluid (11).

2. The floating oil removal device for centralized treatment of cutting fluid according to claim 1, wherein, The four floating balls are respectively fixed at the four ends of the cross - shaped connecting rod.

3. The floating oil removal device for centralized treatment of cutting fluid according to claim 1, characterized in that, Above the two side walls of the separation tank (40), an outlet pipe (42) and a return pipe (46) are respectively provided, and the lowest heights of the openings of the outlet pipe (42) and the return pipe (46) in the separation tank (40) are flush.

4. The floating oil removal device for centralized treatment of cutting fluid according to claim 3, characterized in that, The return pipe (46) is connected to the inside of the water tank (10).

5. The floating oil removal device for centralized treatment of cutting fluid according to claim 3, characterized in that, An oil - separating plate (45) is obliquely arranged inside the separation tank (40), and the oil - separating plate (45) is connected to the top and side walls of the separation tank (40), dividing its interior into a cutting - fluid separation area (43) and a floating - oil separation area (44), and the bottoms of the cutting - fluid separation area (43) and the floating - oil separation area (44) are communicated. The liquid inlet pipe at the output port of the diaphragm pump (41) is connected to the floating - oil separation area (44).

6. The floating oil removal device for centralized treatment of cutting fluid according to claim 5, characterized in that The outlet pipe (42) is located in the area where the floating - oil separation area (44) is located, and the return pipe (46) is located in the area where the cutting - fluid separation area (43) is located.

7. The floating oil removal device for centralized treatment of cutting fluid according to claim 1, characterized in that, The diaphragm pump (41) can also be fixed below the outer side wall of the separation box (40).

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