Oil-water separator

Abstract

The utility model discloses an oil-water separator, and belongs to the field of oil-water separation of oil-containing mud. An oil-water separator comprises: an oil-water separation mechanism comprising a waste liquid tank, an oil collection tank and a liquid storage tank; the mounting cover plate is arranged above the oil-water separation mechanism; the mounting cover plate is provided with a first supporting plate and a second supporting plate; the slag scraping mechanism is mounted on the mounting cover plate and is used for scraping oil sludge on the liquid level of the waste liquid tank to the oil collecting tank; the slag scraping mechanism comprises a slag scraping plate, a rotating mechanism for driving the slag scraping plate to rotate by a certain angle and a moving mechanism for driving the slag scraping plate to translate. According to the oil-water separator disclosed by the utility model, oil sludge after oil-liquid separation can be scraped to the oil collecting groove through the slag scraping mechanism and is led out through the collecting hopper, and the oil-water separator is more compact and stable in structure by improving the structure of the slag scraping mechanism and reducing the overall height.

Description

Technical Field

[0001] The utility model belongs to the field of oil-water separation, in particular to the field of oil-water separation of oily sludge liquid. Background Art

[0002] Traditional machine tools are equipped with built-in oil separators, which utilize a rotating steel belt to remove oil from the cutting fluid for separation. However, in practice, numerous field reports have shown that this separation method fails to meet required separation requirements, with a thick layer of oil remaining on the surface of the machine tool's fluid tank. This oil interferes with the use of water-based cutting fluids. Compared to standard oil, this floating oil not only contains a higher particle content but also has a very high viscosity. Conventional oil-water separators, such as coarse particle size reduction and filtration, are not suitable for this application.

[0003] The machining process for large welded components typically involves applying a primer before machining. This results in the cutting fluid being mixed with not only guideway oil and lubricating oil, but also paint components, causing the oil to separate out of the cutting fluid in the form of sludge. Traditional oil-water separators utilize an overflow system, allowing the oil to flow to a sump. However, the sludge's high viscosity and poor fluidity make it difficult to collect.

[0004] Another situation is the waste liquid of the release agent, which is generally collected through a pit. A mixture of floating wax and waste oil will form on the liquid surface of the pit collection tank. This mixture with some waste liquid is pumped to the oil-water separator. The separated waxy sludge has high viscosity and poor fluidity. It is impossible to discharge the sludge directly through overflow.

[0005] Oil-water separators are typically designed to collect and separate floating oil from the wastewater tank. To save pump costs, return fluid is typically allowed to flow by gravity, utilizing the outlet pipe and the level of the wastewater tank. Consequently, oil-water separators are typically quite tall. Installing a scraping mechanism above the oil-water separator increases the overall height, making the structure top-heavy and unstable. Summary of the Invention

[0006] In order to solve the above-mentioned problem of oil-water separation of waste liquid with oily sludge, the utility model provides an oil-water separator, which can scrape the oily sludge after oil-liquid separation into the oil collecting tank through a scraping mechanism and lead it out through a collecting hopper. By improving the structure of the scraping structure, the overall height is reduced, making the oil-water separator structure more compact and stable.

[0007] The purpose of this utility model is achieved through the following technical solutions.

[0008] An oil-water separator, comprising:

[0009] Oil-water separation mechanism, including waste liquid tank, oil collecting tank and liquid storage tank;

[0010] An installation cover plate is arranged above the oil-water separation mechanism; the installation cover plate is provided with a first support plate and a second support plate;

[0011] The scraping mechanism is installed on the installation cover plate to scrape the sludge on the liquid surface of the waste liquid tank to the oil collecting tank; the scraping mechanism includes a scraping plate, a rotating mechanism for driving the scraping plate to rotate a certain angle, and a moving mechanism for driving the scraping plate to move horizontally.

[0012] Preferably, the oil-water separation mechanism includes a first liquid inlet pipe, the first liquid inlet pipe is connected to a pre-filter, the pre-filter is connected to a liquid inlet pump, and the liquid inlet pump is connected to the waste liquid tank.

[0013] Preferably, the waste liquid tank is provided with a second liquid inlet pipe, the second liquid inlet pipe is provided with a transverse pipe, the transverse pipe is provided with a liquid outlet, and the liquid outlet is facing the side wall of the waste liquid tank; the liquid inlet pump is connected to the second liquid inlet pipe.

[0014] Preferably, a plurality of vertically arranged partitions are provided in the waste liquid tank; an oil guide member is provided on the waste liquid tank, and the oil guide member is inclined from one side of the waste liquid tank toward the oil collecting tank, guiding the waste oil sludge on the liquid surface of the waste liquid tank to the side of the oil collecting tank.

[0015] Preferably, the waste liquid tank is provided with an outlet pipe connected to the liquid storage tank; the oil collecting tank is provided with an overflow port, and the overflow port is lower than the tank port of the liquid storage tank; and a regulating pipe is provided above the outlet pipe.

[0016] Preferably, the rotating mechanism includes a rotating shaft, the scraper plate is arranged on the rotating shaft, one end of the rotating shaft is connected to the first power, and the first power is provided with a seat plate; the moving mechanism includes a turbine, and a screw rod cooperating with the turbine, the seat plate is threadedly connected to the screw rod, and the turbine is connected to the second power.

[0017] Preferably, the moving mechanism also includes a guiding mechanism, which includes a slider and a slide rail. The other end of the rotating shaft is rotatably connected to the slider, and the slider is slidably connected to the slide rail; the guiding mechanism is arranged on the first support plate, and mounting seats are provided at both ends of the screw rod, and the mounting seats are arranged on the second support plate.

[0018] Preferably, a clearance channel for the scraper plate is provided between the first support plate and the second support plate, and the scraper plate extends from the clearance channel into the waste liquid tank to perform a scraping operation on the liquid surface of the waste liquid tank.

[0019] Preferably, the oil-water separation mechanism is further provided with a collecting hopper connected to the oil collecting tank, the collecting hopper is tilted, and the bottom inclination angle of the collecting hopper is the same as that of the bottom of the oil collecting tank or the bottom inclination angle of the collecting hopper is greater than that of the bottom of the oil collecting tank.

[0020] Now for the existing technology, the beneficial technical effects of the utility model are:

[0021] 1. A scraping mechanism is set above the oil-water separation mechanism. When there is a lot of sludge in the liquid surface of the waste liquid tank and the viscosity of the sludge is too high and it is difficult to overflow, the scraping plate can be used to scrape the sludge into the oil collecting tank.

[0022] 2. The traditional scraping mechanism adopts a chain method, and the scraping plate is driven by the chain to flip from the bottom to the top, and scrapes the residue in a cycle, which causes the height of the installation cover plate to be too high; while in the scraping mechanism of the present application, the scraping plate only needs to rotate a certain angle and does not need to flip, which greatly reduces the height of the installation cover plate.

[0023] 3. The oil collecting tank of the traditional oil-water separator is connected to the pipeline, and the oil is discharged through the oil pipe. However, if it is sludge, it cannot be discharged by gravity. The present application sets up a collecting hopper, and the bottom of the collecting hopper has the same inclination angle as the bottom of the oil collecting tank or the inclination angle of the bottom of the collecting hopper is greater than the bottom of the oil collecting tank, and the sludge slides out by its own weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an oil-water separator of the utility model.

[0025] Figure 2 For Figure 1 Explosion diagram.

[0026] Figure 3 For Figure 1 Schematic diagram of the explosion from another perspective.

[0027] Figure 4 This is a top view of the oil-water separation mechanism.

[0028] Figure 5 It is a partial cross-sectional view of the upper half of the utility model.

[0029] Figure 6 It is a partial cross-sectional view of the upper half of the scraper plate of the present invention in another state.

[0030] In the figure: oil-water separation mechanism 1, first liquid inlet pipe 10, pre-filter 100, waste liquid tank 11, oil guide member 110, partition 111, second liquid inlet pipe 112, liquid outlet hole 1120, oil collecting tank 12, overflow hole 120, collecting hopper 121, liquid storage tank 13, liquid outlet pipe 130, lead-out pipe 131, regulating pipe 1310, liquid storage tank notch 132, scraping mechanism 2, scraping plate 20, rotating shaft 21, first power 210, seat plate 211, turbine 22, second power 220, screw 23, mounting seat 230, slider 24, guide rail 25, mounting cover plate 3, first support plate 30, second support bar 31, make way channel 32, mounting block 33. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0032] like Figure 1 , an oil-water separator, including an oil-water separation mechanism 1, a scraping mechanism 2, and a mounting cover plate 3.

[0033] like Figure 1-Figure 3 The oil-water separation mechanism 1 includes a first liquid inlet pipe 10, which is connected to a pre-filter 100, which is connected to a liquid inlet pump 14; the oil-water separation mechanism also includes a waste liquid tank 11, a liquid storage tank 13, and an oil collecting tank 12; the liquid storage tank 13 is provided with a liquid outlet pipe 130 connected to the outside. Figure 4 , the waste liquid tank 11, the liquid storage tank 13, and the oil collecting tank 12 are located in the square water tank, the waste liquid tank 11 is located on the left, the liquid storage tank 13, and the oil collecting tank 12 are located on the right; Figure 3 The waste liquid tank 11 is provided with an outlet pipe 131 connected to the liquid storage tank 13; the oil collecting tank 12 is provided with an overflow port 120, and the overflow port 120 is lower than the liquid storage tank slot 132. An adjusting pipe 1310 is provided above the outlet pipe 131. The effective height of the outlet pipe can be adjusted by the adjusting pipe 1310. When the effective height of the outlet pipe is higher than the overflow port 120 but lower than the liquid storage tank slot 132, the floating oil above the waste liquid tank overflows into the oil collecting tank 12 through the overflow port; when the effective height of the outlet pipe 131 is lower than the overflow port 120, the floating oil stops overflowing. When more floating oil accumulates in the waste liquid tank 11, the adjusting pipe 1310 is used to adjust the effective height to be higher than the overflow port 120.

[0034] like Figure 4 、 Figure 5A second liquid inlet pipe 112 is provided at the bottom of the waste liquid tank 11. A horizontal pipe is provided on the second liquid inlet pipe, and a liquid discharge hole 1120 is provided on the horizontal pipe. The liquid discharge hole 1120 faces the side wall of the waste liquid tank 11. The liquid discharge hole faces the side wall. The liquid exiting the second liquid inlet pipe 112 collides with the side wall, pushing the liquid from one side of the waste liquid tank 11 toward the oil collecting tank 12, causing the floating oil on the liquid surface of the waste liquid tank 11 to gather from the waste liquid tank side to the oil collecting tank side. A plurality of vertically arranged partitions 111 are provided in the waste liquid tank 11. The waste liquid is deflected by the partitions 111, causing the oil-containing particles in the waste liquid to further float to the surface. An oil guide 110 is provided on the waste liquid tank 11. The oil guide 110 is inclined from one side of the waste liquid tank 11 toward the oil collecting tank, guiding the waste oil sludge on the liquid surface of the waste liquid tank 11 to the oil collecting tank 12.

[0035] like Figure 1-Figure 3 As shown, a mounting cover plate 3 is provided above the oil-water separation mechanism 1, and the scraping mechanism 2 is mounted on the mounting cover plate 3; the scraping mechanism 2 includes a scraping plate 20, a rotating mechanism for driving the scraping plate 20 to rotate a certain angle, and a moving mechanism for driving the scraping plate 20 to translate. The rotating mechanism includes a rotating shaft 21, on which the scraping plate 20 is disposed. A first power 210 is provided at one end of the rotating shaft 21, and the first power 210 is provided with a seat plate 211; the moving mechanism includes a turbine 22, and a screw rod 23 cooperating with the turbine 22. The seat plate 211 is threadedly connected to the screw rod 23, and the turbine 22 is connected to the second power 220. The moving mechanism also includes a guide mechanism, which includes a slider 24 and a slide rail 25. One end of the rotating shaft 21 is connected to the first power 210, and the other end is rotatably connected to the slider 24. The slider 24 is slidably connected to the slide rail 25. A first support plate 30 and a second support plate 31 are provided in the mounting cover plate 3 ; the guide mechanism is provided on the first support plate 30 , and mounting seats 230 are provided at both ends of the screw rod 23 , and the mounting seats 230 are provided on the second support plate 31 .

[0036] like Figure 3 A clearance channel 32 for the scraper 20 is provided between the first support plate 30 and the second support plate 31. The scraper 20 extends from the clearance channel 32 into the waste liquid tank 11 to scrape the liquid surface of the waste liquid tank 11. A mounting block 33 for the second power 220 is also provided on the mounting cover plate 3. Figure 2 、 Figure 5 As shown, the oil-water separation mechanism 1 is also provided with a collecting hopper 121 connected to the oil collecting tank 12. The collecting hopper 121 is tilted, and the bottom of the collecting hopper 121 has the same tilt angle as the bottom of the oil collecting tank 12, or the tilt angle of the bottom of the collecting hopper 121 is greater than the bottom of the oil collecting tank 12.

[0037] A cover plate is provided above the mounting cover plate. Observation doors can also be provided on either side of the clearance passage 32 to monitor scraping progress. A guide groove can be connected below the hopper 121 to guide waste oil sludge to the waste oil collection tank. The guide groove is aligned with the bottom surface of the hopper 121. The cover plate, observation doors, and guide groove are not shown in the figure.

[0038] The first support plate 30 and the second support plate 31 have both supporting and shielding functions, so as to separate the driving mechanism of the scraping mechanism from the liquid in the oil-water separation mechanism, thereby preventing the tank liquid from splashing onto the driving mechanism of the scraping mechanism.

[0039] How the oil-water separator works:

[0040] like Figures 1-4 The oil is sucked by the liquid inlet pump 14 and enters the first liquid inlet pipe 10. The large particles are first filtered out in the pre-filter 100, and then introduced into the waste liquid tank 11 through the second liquid inlet pipe 112. In the waste liquid tank 11, the oil is further separated by the baffle 111, and the floating oil and fine particles float to form sludge. The clean liquid at the bottom enters the liquid storage tank 13 through the outlet pipe 131. Figure 5 When a lot of sludge accumulates on the liquid surface of the waste liquid tank 11, the second power 220 of the scraping mechanism 2 is turned on, and the scraping plate 20 moves horizontally on the liquid surface to scrape the sludge into the oil collecting tank 12, and then the sludge is introduced from the oil collecting tank 12 into the sludge collection bucket through the oil guide hopper 121. Figure 6 The scraper blade 20 rotates a certain angle under the action of the first power 210, and in this embodiment, it rotates to a horizontal position. Under the action of the second power 220, the scraper blade returns to its original position. After returning to its original position, the scraper blade 20 rotates from a horizontal state to a vertical state, and then performs the next scraping operation.

[0041] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. An oil-water separator, characterized in that: include: Oil-water separation mechanism, including waste liquid tank, oil collecting tank and liquid storage tank; An installation cover plate is arranged above the oil-water separation mechanism; the installation cover plate is provided with a first support plate and a second support plate; The scraping mechanism is installed on the installation cover plate to scrape the sludge on the liquid surface of the waste liquid tank to the oil collecting tank; the scraping mechanism includes a scraping plate, a rotating mechanism for driving the scraping plate to rotate a certain angle, and a moving mechanism for driving the scraping plate to move horizontally.

2. The oil-water separator according to claim 1, characterized in that: The oil-water separation mechanism includes a first liquid inlet pipe, the first liquid inlet pipe is connected to a pre-filter, the pre-filter is connected to a liquid inlet pump, and the liquid inlet pump is connected to the waste liquid tank.

3. The oil-water separator according to claim 2, characterized in that: The waste liquid tank is provided with a second liquid inlet pipe, the second liquid inlet pipe is provided with a transverse pipe, the transverse pipe is provided with a liquid outlet, and the liquid outlet is facing the side wall of the waste liquid tank; the liquid inlet pump is connected to the second liquid inlet pipe.

4. The oil-water separator according to claim 1, characterized in that: A plurality of vertically arranged partitions are provided in the waste liquid tank; an oil guide is provided on the waste liquid tank, which is inclined from one side of the waste liquid tank toward the oil collecting tank, guiding the waste oil sludge on the liquid surface of the waste liquid tank to the side of the oil collecting tank.

5. The oil-water separator according to claim 1, characterized in that: The waste liquid tank is provided with an outlet pipe connected to the liquid storage tank; the oil collecting tank is provided with an overflow port, and the overflow port is lower than the tank port of the liquid storage tank; a regulating pipe is provided above the outlet pipe.

6. The oil-water separator according to claim 1, characterized in that: The rotating mechanism includes a rotating shaft, the scraper plate is arranged on the rotating shaft, one end of the rotating shaft is connected to the first power, and the first power is provided with a seat plate; the moving mechanism includes a turbine and a screw rod cooperating with the turbine, the seat plate is threadedly connected to the screw rod, and the turbine is connected to the second power.

7. The oil-water separator according to claim 6, characterized in that: The moving mechanism also includes a guiding mechanism, which includes a slider and a slide rail. The other end of the rotating shaft is rotatably connected to the slider, and the slider is slidably connected to the slide rail. The guiding mechanism is arranged on the first support plate, and mounting seats are provided at both ends of the screw rod, and the mounting seats are arranged on the second support plate.

8. The oil-water separator according to claim 1, characterized in that: A clearance channel for the scraper plate is provided between the first supporting plate and the second supporting plate. The scraper plate extends from the clearance channel into the waste liquid tank to perform a scraping operation on the liquid surface of the waste liquid tank.

9. The oil-water separator according to claim 1, characterized in that: The oil-water separation mechanism is further provided with a collecting hopper connected to the oil collecting tank. The collecting hopper is tilted, and the tilt angle of the bottom of the collecting hopper is the same as that of the bottom of the oil collecting tank, or the tilt angle of the bottom of the collecting hopper is greater than that of the bottom of the oil collecting tank.

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