JP3191074U - Oil / water separation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-water separation facility capable of easily and efficiently separating oil-water of waste liquid. A recovery device 100 includes a primary water tank having a first space, a secondary water tank having a second space communicating with the first space via an overflow port, and a second space. The separation device 200 includes a waste liquid suction port provided lower than the overflow port, a waste liquid suction unit having a waste liquid suction port and a discharge pipe for communicating with the outside, and a suction unit having a suction drive unit. A tank provided with an oil-water separation chamber communicating with the discharge pipe of the recovery device, an oil-water separation chamber and a drainage chamber communicating with the oil-water separation chamber via a communication port, a drainage port provided in the drainage chamber, and an oil-water separation chamber. The first overflow weir provided between the oil drain port provided near the upper end and the oil drain port and the oil / water separation chamber so that the height with respect to the bottom end of the oil / water separation chamber is 500 mm to 3500 mm. We will provide an oil-water separation facility that is characterized by having the above. [Selection diagram] Fig. 1

Description

  The present invention relates to an oil / water separation facility, and more particularly to an oil / water separation facility capable of recovering floating oil.

  Cooling water and lubricating oil are mixed with waste liquids such as coolants and cleaning liquids that cool and lubricate machining points during machining, especially during cutting, and these waste liquids are collected for processing or reuse. Equipment for separating floating oil from moisture is required.

  Patent Document 1 discloses an oil / water separation facility for treating such cutting waste liquid. The facility includes a float device that is provided with a suction port and a discharge port and floated on the surface of the waste liquid, and an oil-water separation tank that is in communication with the discharge port of the float device and is provided with a pump. When the pump is operated, the waste liquid is sucked from the suction port of the float device and discharged from the discharge port to the oil / water separation tank, and the cooling water and the lubricating oil in the waste liquid are separated in the oil / water separation tank.

  However, the conventional oil / water separation equipment has the following drawbacks.

  1. Since the pump is a self-priming pump, if there is even a slight gap between the components constituting the pump, for example, leakage occurs and the desired effect cannot be obtained. For this reason, since high precision is required for the assembly of the pump, the manufacturing cost is high. Also, if the waste liquid contains a large amount of impurities such as iron scrap, the pump is clogged and is likely to fail.

  2. Since a gear pump is used, operation is possible even if water or air is intermittently sucked, but precise meshing between gears is required. If there is a gap in the meshing, leakage occurs and the desired effect cannot be obtained. However, the oil in the cutting waste liquid contains a lot of impurities such as metal debris and dust generated during processing, and when these are sucked into the pump, they are worn between the gears, and the accuracy of the meshing is reduced. It will be damaged.

  3. The oil component in the cutting waste liquid is not necessarily in a liquid state, and may be a tofu-like saponified oil. In this case, oil or fat is clogged at the suction port of the float device, or the discharge port is interfered, so that the float device is inclined with respect to the liquid surface, and the suction port exits from the liquid surface and is exposed to the air. As a result, the gear pump sucks only air and the gear is not cooled or lubricated. If the gear pump continues to operate in this state, overheating and poor meshing will occur within a few minutes, leading to failure.

  On the other hand, as an oil / water separation tank used for cutting waste liquid processing of CNC processing machines, one having a plurality of partition walls provided vertically inside is used, with a water discharge port at the bottom of the tank and at the upper end. Each oil outlet is provided. However, in such an oil / water separation tank, the partition wall is provided only to suppress the flow rate of the waste liquid, and the upper space of the partition wall is connected, so that the waste liquid is introduced into the tank. At this time, a part of the waste liquid flows over the partition plate in a state where moisture and oil are mixed, and is discharged from the oil outlet without being separated, so that the separation effect is not good.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an oil-water separation facility that can easily and efficiently perform oil-water separation of waste liquid with a simple structure.

    As means for achieving the above object, the present invention provides the following means.

That is, a facility for recovering a waste liquid containing oil and moisture and separating the oil from the waste liquid, comprising a recovery device and a separation device,
The recovery device is
A primary water tank having a first space for receiving the waste liquid;
A secondary water tank having a second space communicating with the first space through the overflow port and having the second space in which the waste liquid overflowing from the first space flows in and stores through the overflow port;
The waste liquid suction port provided at a position lower than the lower end of the overflow port so that the floating oil in the waste liquid can be sucked in the second space, and the sucked waste liquid can be discharged to the outside of the recovery device. And a suction unit having a waste liquid suction part having a discharge pipe communicating the waste liquid suction port and the outside of the recovery device, and a suction drive part for driving the suction of the waste liquid suction part. ,
The separation device includes:
An oil / water separation chamber that communicates with the discharge pipe so that the waste liquid sucked from the waste liquid suction port of the recovery device is introduced and separates the introduced waste liquid into oil and moisture due to a specific gravity difference, and the oil water A drainage chamber that is provided adjacent to the oil / water separation chamber so as to communicate with the separation chamber via a communication port and into which water separated from the waste liquid flows through the communication port is provided inside. The tank
A drain outlet provided in the drain chamber and from which the moisture is discharged to the outside of the tank;
An oil discharge port provided near the upper end of the oil / water separation chamber in the oil / water separation chamber and from which the oil separated from the waste liquid is discharged to the outside of the tank;
A first overflow weir provided between the oil discharge port and the oil / water separation chamber so that the height of the weir top with respect to the bottom end of the oil / water separation chamber is 500 mm to 3500 mm; An oil / water separation facility is provided.

Further, in the oil / water separation facility according to the present invention, the suction drive unit includes a motor provided above the secondary water storage tank, and a housing disposed in the second space below the motor. And an impeller provided in the internal space of the housing and driven by the motor,
The waste liquid suction part has a suction side part communicating the waste liquid suction port and the internal space of the housing, and a discharge side part communicating the internal space of the housing and the discharge pipe;
It is preferable that the suction of the waste liquid suction unit is driven when the impeller is operated.

Further, in the oil / water separation facility according to the present invention, a through hole communicating with the internal space of the housing is provided through the housing of the suction drive unit,
The suction side portion of the waste liquid suction portion has one end pivotally connected to the housing so that the suction side portion can be rotated up and down with respect to the housing, and the other end on the liquid surface of the waste liquid in the second space. It is preferable to have a float so as to be positioned, an introduction hole corresponding to the through hole is provided on the one end side, and the waste liquid suction port is provided on the other end side.

  Further, in the oil / water separation facility according to the present invention, the suction unit is fixed to the secondary water tank and the fixing member to which the suction driving unit and the waste liquid suction unit are fixed. It is preferable to have a plurality of struts that support the height position relative to the secondary water tank so as to be adjustable.

  Further, in the oil / water separation facility according to the present invention, the primary water tank and the secondary water tank are integrally connected, and the recovery device is disposed between the first space and the second space. It is preferable that a partition plate provided on the partition plate is further provided, and the overflow port is provided at an upper end portion of the partition plate.

  Furthermore, in the oil / water separation facility according to the present invention, the secondary water tank is disposed in the first space of the primary water tank, and rises from a bottom wall and a peripheral edge of the bottom wall. A partition wall provided between the first space and the second space, wherein the second space is defined by the bottom wall and the peripheral wall. It has a board and the overflow port may be constituted so that it may be provided in the upper end part of the partition plate.

  In the oil / water separation facility according to the present invention, the secondary water storage tank has a pair of guide rails extending vertically, and the partition plate is integrally formed by a flexible plate. In addition, it is slidably installed along the guide rail so that the height position can be adjusted with respect to the primary water storage tank and the secondary water storage tank, and the upper end portion thereof is the lower end of the overflow port. You may be comprised so that it may become.

  The partition plate is composed of a plurality of slats pivoted to each other, and is slidable along the guide rail so that the height position of the partition plate can be adjusted with respect to the primary water tank and the secondary water tank. And the upper end portion thereof may be the lower end of the overflow port.

  Moreover, in the oil-water separation facility according to the present invention, the recovery device further includes a water level adjustment unit provided above the secondary water tank, and the water level adjustment unit is the waste liquid in the second space. It is preferable that the liquid level of the waste liquid can be adjusted so that the liquid level always corresponds to the position of the waste liquid suction port.

  Further, the water level adjustment unit includes a replenisher tank provided above the secondary water tank, a replenisher pipe extending from the replenisher tank so as to enter the second space, and the replenisher A water level adjusting pipe extending from the liquid tank toward the liquid level of the waste liquid in the second space, and the water level adjusting pipe has a height at the tip on the second space side. It is preferable that it is located between the lower end of the overflow port and the waste liquid suction port.

  In addition, in the oil / water separation facility according to the present invention, the separation device further includes a second overflow weir provided between the drainage chamber and the drainage port, and a bottom end of the oil / water separation chamber is provided. The first overflow weir is preferably provided so as to be higher than the second overflow weir at the height of each reference weir.

  Further, the separation device further includes an oil drain pipe installed in the tank so as to extend from the oil / water separation chamber to the outside of the tank, and the oil drain pipe has a conduit portion and a ring member, An outer portion disposed outside the tank, an inner portion disposed in the oil / water separation chamber such that one end communicates with the outer portion and the other end communicates with the oil discharge port. A threaded portion is provided at the other end of the inner portion, the ring member is screwed to the threaded portion, and the first overflow weir is formed at an upper end of the ring member. It is preferable that the oil discharge port is surrounded by the first overflow weir. In this case, it is preferable that the oil drain pipe of the separation device further includes a pump provided in the conduit portion so that the oil / water separation chamber can be kept airtight when operation is stopped.

The tank of the separation device further includes a lead-in pipe that communicates the oil-water separation chamber and the drainage chamber, and the lead-in pipe includes a first end located in the oil-water separation chamber; And a second end portion located in the drainage chamber, and the communication port is preferably provided so as to connect the first end portion and the second end portion.

  Further, the separation device further includes a waste liquid introduction pipe provided near the upper end of the tank so as to communicate the discharge pipe of the recovery device and the oil / water separation chamber, and the waste liquid introduction pipe includes: It is preferable to have a waste liquid outlet arranged at a position lower than the oil outlet in the oil / water separation chamber.

  In the oil / water separation facility according to the present invention, the tank is disposed between the waste liquid introduction pipe and the discharge pipe adjacent to the oil / water separation chamber, and in the waste liquid introduction chamber. A partition plate provided, and the partition plate communicates the waste liquid introduction chamber with the oil / water separation chamber via the introduction space connected to the discharge pipe and the waste liquid outlet. It is also possible to divide into buffer spaces and to be provided so that the upper end of the buffer space is higher than the oil discharge port.

  Further, in the oil / water separation facility according to the present invention, the tank of the separation device includes a tank upper member, a base member, a first tubular member connecting the tank upper member and the base member, and A second tubular member, wherein the oil / water separation chamber and the drainage chamber are provided in parallel with each other in the tank upper member, and the communication port is provided in the base member. The first tubular member communicates with the oil / water separation chamber and the communication port, and the second tubular member communicates with the communication port and the drainage chamber. Also good.

  According to the above means, since the primary storage tank and the secondary storage tank that are communicated at the overflow port are provided on the recovery device side, the portion containing a large amount of oil in the waste liquid is caused to flow into the secondary storage tank side. In addition, since the suction unit is provided so as to suck the waste liquid from the secondary water storage tank, the waste liquid can be efficiently sucked with a simple structure, and it is difficult to break, and the cost can be reduced. In addition, on the separation device side, in addition to the overall arrangement of the separation device, the height of the top of the first overflow weir relative to the bottom of the tank is set to be 500 mm to 3500 mm, The oil / water separation effect in the oil / water separation chamber is excellent.

BRIEF DESCRIPTION OF THE DRAWINGS The outline sectional view showing the whole in a 1st embodiment of oil-water separation equipment concerning the present invention. Sectional drawing which shows the collection | recovery apparatus in 1st Embodiment. Sectional drawing which shows the separation apparatus in 1st Embodiment. Sectional drawing which shows the collection | recovery apparatus in 2nd Embodiment. Sectional drawing which shows the collection | recovery apparatus in 3rd Embodiment. Sectional drawing which shows the collection | recovery apparatus in 4th Embodiment. Sectional drawing which shows the collection | recovery apparatus in 4th Embodiment. Sectional drawing which shows the collection | recovery apparatus in 5th Embodiment. Sectional drawing which shows the collection | recovery apparatus in 5th Embodiment. The perspective view which shows the suction unit of the collection | recovery apparatus in 4th and 5th embodiment. Explanatory drawing of the operation | movement aspect which shows the collection | recovery apparatus in 4th and 5th embodiment. The top view which shows the suction unit of the collection | recovery apparatus in 4th and 5th embodiment. Sectional drawing which shows the collection | recovery apparatus in 6th Embodiment. The top view which shows the separation apparatus in 7th Embodiment. FIG. 15 is a cross-sectional view taken along line XV-XV in FIG. 14. FIG. 15 is a developed sectional view taken along line XVI-XVI in FIG. 14.

  Hereinafter, specific embodiments of an oil / water separation facility according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the second embodiment, description of homologous parts is omitted, and only different parts are described in detail.

  The oil / water separation facility according to the present invention is a floating part (mainly a waste liquid) of an industrial waste liquid, for example, a processing liquid waste liquid (hereinafter simply referred to as a waste liquid) mixed with cooling water or lubricating oil used in machining such as cutting. 1 is a facility provided with a recovery device 100 for recovering (floating oil composed of oil) and a separation device 200 for separating the oil and water of the waste liquid flowing from the recovery device 100 (see FIG. 1).

<First Embodiment>
Hereinafter, each structure of the collection | recovery apparatus 100 and the separation apparatus 200 in 1st Embodiment is demonstrated.

(Refer to collection device 100, FIG. 2)
As shown in FIG. 2, the recovery device 100 includes a primary water tank 10 into which waste liquid first flows, a secondary water tank 20 that communicates with the primary water tank 10, and the primary and secondary water tanks 10. , 20 and a partition plate 30 having an upper end 31, a suction unit 40 for sucking waste liquid in the secondary water tank 20, and a water level adjusting unit 50 for adjusting the water level of the secondary water tank 20, It has.

  The primary water tank 10 is opened upward, and a first space 11 for receiving waste liquid is defined inside.

  The secondary water tank 20 is provided on one side of the primary water tank 10, is partitioned by the first space 11 of the primary water tank 10 and the partition plate 30 and is formed at the upper end portion 31 of the partition plate 30. A second space 21 communicating with the first space 11 through the overflow port 22 is defined. When the water level of the waste liquid stored in the first space 11 rises and exceeds the upper end portion 31 of the partition plate 30, that is, the lower end of the overflow port 22, the overflow waste liquid flows into the second space 21 and is stored.

  In the present embodiment, as shown in FIG. 2, the primary water tank 10 and the secondary water tank 20 are formed so as to be integrally connected, and the first space 11 and the second space are formed. 21 is defined by a partition plate 30. Further, the overflow port 22 is formed as an opening obtained by cutting a part of the upper end portion 31 of the partition plate 30 downward.

  The partition plate 30 is a plate-like member fixed in the present embodiment, and the upper end portion 31 thereof is the lower end of the overflow port 22. The overflow port 22 can also be formed by providing a through hole directly in the upper end portion 31 of the partition plate 30, for example. In addition, the secondary water tank 20 has an attachment frame 28 provided above the second space 21.

  The suction unit 40 is installed in the secondary water tank 20, a waste liquid suction part 42 provided so as to suck the waste liquid in the second space 21, and a suction drive part that drives suction of the waste liquid suction part 42 41.

  The suction drive unit 41 includes a motor 411 installed in the mounting frame 28 above the secondary water tank 20, a housing 412 disposed in the second space 21 below the motor 411, and having an internal space. And an impeller 413 which is provided in an internal space of the housing 412 and is driven by a motor 411.

  The waste liquid suction part 42 has a discharge pipe 424 that communicates the second space 20 and the outside of the recovery device 100. Further, the waste liquid suction part 42 is provided with a waste liquid suction port 422 that opens upward at one end, and has a tubular shape that is connected to the housing 412 so that the other end communicates with the internal space of the housing 412. The suction side portion 421 includes a tubular discharge side portion 423 that is connected to the housing 412 so that one end communicates with the internal space of the housing 412 and communicates with the discharge pipe 424 at the other end. The waste oil suction port 422 is provided at a position lower than the lower end of the overflow port 22 so that the waste liquid can be sucked in the second space 21.

  With the above configuration, when the motor 411 is operated and the impeller 413 is operated, the suction unit 40 in the present embodiment sucks waste liquid from the waste liquid suction port 422 and sends it to the housing 412 through the suction side portion 421. The waste liquid sent to is sent to the discharge pipe 424 through the discharge side portion 423, discharged to the outside of the recovery apparatus 100, and flows into the separation apparatus 200 as described below.

  The water level adjustment unit 50 adjusts the level of the waste liquid so that the liquid level of the waste liquid in the second space 21 always corresponds to the position of the waste liquid suction port 422, that is, the liquid level is always higher than the waste liquid suction port 422. Specifically, the replenisher tank 51 is installed on the mounting frame 28 above the secondary water tank 20, and extends from the replenisher tank 51 to the vicinity of the bottom of the second space 21. And a water level adjusting pipe 53 extending from the replenishing liquid tank 51 toward the liquid level of the waste liquid in the second space 21. The water level adjusting pipe 53 has a tip 531 on the second space 21 side located at a height position between the waste liquid suction port 422 and the lower end of the overflow port 22, that is, from the waste liquid suction port 422. And higher than the lower end of the overflow port 22.

(See Separator 200, FIG. 3)
As shown in FIG. 3, the separation apparatus 200 includes a tank in which an oil / water separation chamber 81 into which waste liquid sucked from the waste liquid suction port 422 of the recovery apparatus 100 is introduced through a discharge pipe 424 is defined. It has 80.

  The tank 80 is provided adjacent to the oil / water separation chamber 81, the waste liquid introduction chamber 83 provided adjacent to the oil / water separation chamber 81, the waste liquid introduction pipe 84 communicating the waste liquid introduction chamber 83 and the oil / water separation chamber 81, and the oil / water separation chamber 81. The drainage chamber 85, the oil / water separation chamber 81 and the lead-in pipe 86 communicating with the drainage chamber 85, the oil / water separation chamber 81 and the outside of the tank 80. And an oil drain pipe 82 provided with a located oil drain port 828.

  When the above configuration is briefly described, the waste liquid introduction chamber 83 and the waste liquid introduction pipe 84 are paths for introducing the waste liquid into the oil / water separation chamber 81, and the lead-in pipe 86 and the drainage chamber 85 are separated by the oil / water separation chamber 81. The oil drain pipe 82 is a path for discharging the oil separated in the oil / water separation chamber 81 to the outside. This will be described in more detail below.

  The oil / water separation chamber 81 is a vertically defined space having a bottom end 60 and an upper end 70, and is a space for naturally separating oil and water contained in the introduced waste liquid due to a specific gravity difference. is there. The oil drain port 828 is disposed near the upper end 70 of the oil / water separation chamber 81. A cleaning hole 61 is provided at the bottom end 60 of the oil / water separation chamber 81.

  The waste liquid introduction chamber 83 is provided adjacent to the upper end 70 of the oil / water separation chamber 81, and a partition plate 831 is provided therein. By this partition plate 831, the waste liquid introduction chamber 83 communicates with the discharge pipe 424 of the recovery apparatus 100, and an introduction space 832 into which waste liquid from the recovery apparatus 100 is first introduced and a gap at the upper end of the partition plate 831. In addition, it is divided into a buffer space 833 that communicates with the introduction space 832 and communicates with the oil / water separation chamber 81 via the waste liquid introduction pipe 84. Note that the upper end of the partition plate 831 is located higher than the oil drain port 828.

  The waste liquid introduction pipe 84 has a waste liquid outlet port 841 disposed at a position lower than the oil drain port 828 in the oil / water separation chamber 81.

  The oil drain pipe 82 includes a conduit portion 821, a ring member 822, and a pump 823.

  The conduit portion 821 is disposed in the vicinity of the upper end of the oil / water separation chamber 81 such that one end communicates with the outer portion 824 and the other end communicates with the oil discharge port 828. And an inner portion 825. A threaded portion 826 is provided at the other end of the inner portion 825, and an oil drain port 828 is provided at the upper end of the threaded portion 826.

  The ring member 822 is an annular member that is threaded so that the inner peripheral surface thereof corresponds to the threaded portion 826, and is screwed so as to surround the threaded portion 826. A first overflow weir 827 surrounding the oil discharge port 828 is formed between the oil discharge port 828 and the oil / water separation chamber 81 by the upper end of the ring member 822. The height position of the ring member 822 can be adjusted by adjusting the screw contact between the ring member 822 and the threaded portion 826.

  The pump 823 is provided in the conduit portion 821 so that the oil / water separation chamber 81 can be kept airtight when the operation of the oil / water separation facility is stopped.

  The drain chamber 85 has a drain port 851 communicating with the outside, and a second overflow weir 852 is provided between the drain chamber 85 and the drain port 851. Here, in the height with respect to the bottom end 60 of the oil / water separation chamber 81, the top height h1 of the first overflow weir 827 is higher than the top height h2 of the second overflow weir 852. It is provided to become. In addition, the height h1 of the first overflow weir 827 is specifically in the range of 500 mm to 3500 mm.

  The lead-in pipe 86 includes a first end 861 located near the bottom end 60 in the oil / water separation chamber 81, a second end 862 located in the drain chamber 85, the first end 861, and the first end 861. And a communication port 863 that connects the two end portions 862.

  Below, operation | movement of the oil-water separation equipment in this embodiment comprised as mentioned above is demonstrated.

  As shown in FIGS. 1 and 2, a replenisher is preliminarily placed in the replenisher tank 51 of the water level adjustment unit 50.

  When the waste liquid containing moisture and oil continuously flows into the first space 11 of the primary water tank 10, the oil having a low specific gravity floats near the liquid surface in the first space 11. When the water level of the waste liquid in the first space 11 exceeds the upper end portion 31 of the partition plate 30, that is, the lower end of the overflow port 22, it flows into the second space 21 of the secondary water tank 20 through the overflow port 22. Even in the second space 21, oil in the waste liquid floats upward, and moisture sinks downward.

  When the level of the waste liquid stored in the second space 21 exceeds the height of the waste liquid suction port 422 and does not exceed the height of the lower end of the overflow port 22, the motor 411 of the suction unit 40 is activated and the housing 412 The inner impeller 413 is rotationally driven to generate a suction action. As a result, the floating portion containing a large amount of oil in the waste liquid in the second space 21 is sucked from the waste liquid suction port 422 and separated from the discharge pipe 424 through the suction side portion 421, the internal space of the housing 412, and the discharge side portion 423. It is discharged to the device 200 side.

  Subsequently, as shown in FIG. 3, the waste liquid flows into the introduction space 832 of the waste liquid introduction chamber 83 of the separation device 200 through the discharge pipe 424. Further, the waste liquid passes through the partition plate 831 and flows into the buffer space 833, and is introduced into the oil / water separation chamber 81 through the waste liquid introduction pipe 84.

  The waste liquid stored in the oil / water separation chamber 81 is separated into oil and moisture due to the difference in specific gravity, so that an oil layer 812 is formed in the upper layer and a water layer 811 is formed in the lower layer. The lower moisture layer 811 flows into the drawing pipe 86 near the bottom end 60 of the oil / water separation chamber 81 and is introduced into the drainage chamber 85. The moisture introduced into the drainage chamber 85 passes through the second overflow weir 852 and is discharged to the outside from the drainage port 851.

On the other hand, the upper oil content layer 812 flows over the first overflow weir 827 to the oil discharge port 828 and is discharged to the outside through the conduit portion 821.
As described above, the height h1 of the first overflow weir 827 in the drain chamber 85 is higher than the height h2 of the second overflow weir 852 in the oil / water separation chamber 81. The waste liquid in the drainage chamber 85 is almost moisture, whereas the waste liquid in the oil / water separation chamber 81 contains oil and moisture, and water has a higher specific gravity than oil. The waste liquid oil layer 812 can exceed the second overflow weir 852.

  Moreover, in the above-described operation process on the recovery device 100 side, when the water level in the second space 21 becomes lower than the tip 531 of the water level adjustment pipe 53, that is, the tip 531 of the water level adjustment pipe 53 is not immersed in the waste liquid. The air in the second space 21 flows into the replenisher tank 51 through the water level adjusting pipe 53. Then, the replenisher stored in the replenisher tank 51 due to the equilibrium action with the external pressure (atmospheric pressure) passes through the replenisher pipe 52 to the second space 21 and the water level in the second space 21 is the water level. The flow continues until the tip 531 of the adjustment pipe 53 is exceeded again. In this manner, the water level of the waste liquid in the second space 21 is adjusted so as to be always higher than the waste liquid suction port 422.

  The effects obtained by providing the oil-water separation facility according to the present embodiment with the above structure are listed below.

  1. Since the primary water tank 10, the secondary water tank 20, the partition plate 30, and the overflow port 22 are provided, a portion containing a large amount of oil in the waste liquid can be allowed to flow into the second space 21, and suction is performed. The waste liquid can be efficiently sucked from the second space 21 by the cooperation of the motor 411, the impeller 413, and the waste liquid suction section 42 of the unit 40.

  2. By installing the water level adjustment unit 50, the water level in the second space 21 can be automatically adjusted, so that the waste liquid can be sucked smoothly.

  3. The motor 411 of the suction unit 40 is provided above the secondary water tank 20, and the spiral pump constituted by the housing 412 and the impeller 413 is easy to maintain and inexpensive. Further, the centrifugal pump can be applied to a liquid containing a large amount of impurities, and there is a relatively large gap between the impeller 413 and the housing 412. For example, granular impurities such as iron scrap are contained in the waste liquid. However, if the impurities are 10 mm or less, they can pass smoothly, and problems such as clogging and failure are unlikely to occur.

  4). Even if the oil contained in the waste liquid is not a liquid but a tofu-like saponified oil or fat, the problem that a malfunction of a gear pump that occurs, for example, by a suction method using a float device can be solved by the operation of the suction unit 40 has been solved.

  5. Since the height h1 of the top of the first overflow weir 827 with respect to the bottom end 60 of the oil / water separation chamber 81 is set to be 500 mm to 3500 mm as described above, it is formed in the oil / water separation chamber 81. The thickness of the oil component layer 812 of the waste liquid is increased, and the oil / water separation effect is excellent.

  6). Since the waste liquid outlet 841 of the waste liquid introduction pipe 84 is provided at a position lower than the oil outlet 828 and the waste liquid outlet 841 is located near the bottom end 60 of the oil / water separation chamber 81, When being introduced into the oil / water separation chamber 81 from the waste liquid introduction chamber 83, no ripple occurs on the liquid surface of the oil layer 812 of the waste liquid in the oil / water separation chamber 81, and the inflow of the oil layer 812 to the oil outlet 828 is stabilized. ing.

  7). When the inside of the tank 80 of the separation device 200 has a sealed structure, when the waste liquid continuously flows into the oil / water separation chamber 81, the pressure in the oil / water separation chamber 81 becomes higher than the atmospheric pressure. For example, if the waste water ejected from the drain port 851 is sprayed to the machining point, the water content of the waste liquid can be reused. Further, when the inside of the tank 80 is not a sealed structure, oil / water separation can be simply performed.

  8). Since the bottom end 60 of the tank 80 is provided with a cleaning hole 61, the oil / water separation chamber 81 can be cleaned using this.

  9. Since the pump 823 is provided in the oil drain pipe 82, the oil-water separation chamber 81 can be kept airtight and the internal pressure can be maintained even when the operation is stopped.

  In addition, the oil-water separation equipment according to the present invention can be applied to waste liquid of cutting fluid of a CNC machine. For example, when used for a CNC processing machine, if the primary water tank 10 is installed below the machine base of the CNC processing machine, the waste liquid after cutting can be received in the primary water tank 10 as it is.

<Second embodiment, see FIG. 4>
Hereinafter, a second embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIG. 4, the recovery device 100A in the second embodiment is similar to the first embodiment in that the primary water tank 10A, the secondary water tank 20A, the partition plate 30A, the suction unit 40A, the water level. Although the adjustment unit 50A is provided, the structures of the primary water tank 10A and the secondary water tank 20A are different.

  The secondary water tank 20A is disposed in the first space 11A of the primary water tank 10A, and has a bottom wall 23A that overlaps the bottom wall of the primary water tank 10A, and a peripheral wall that rises from the periphery of the bottom wall 23A. 24A, and a second space 21A is defined by the bottom wall 23A and the peripheral wall 24A. Further, a part of the peripheral wall 24A forms a partition plate 30A that divides the first space 11A and the second space 21A.

  Since the recovery device 100A in the second embodiment has the same effect as in the first embodiment, the primary water tank 10A and the secondary water tank 20A are individually formed and can be separated. More convenient in use.

<Third embodiment, see FIG. 5>
Hereinafter, a third embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIG. 5, the recovery device 100B in the third embodiment includes a primary water tank 10B, a secondary water tank 20B, a suction unit 40B, and a water level adjustment unit 50B, but the primary water tank 10B. The structures of the secondary water tank 20B and the suction unit 40B are different.

  In this embodiment, the primary water tank 10B and the secondary water tank 20B are provided separately, and the overflow port 22B formed in a tubular shape is near the upper ends of the primary water tank 10B and the secondary water tank 20B. The first space 11B and the second space 21B are communicated with each other through the overflow port 22B.

  Further, the suction unit 40B is configured such that the waste liquid suction port 422 and the suction side portion 421 are omitted, and instead, a through hole 403B communicating with the internal space of the housing 412B is provided through the upper portion of the housing 412B. Yes. The through hole 403B is for sucking waste liquid instead of the waste liquid suction port 422. The recovery device 100B in the third embodiment configured as described above has the same effect as that in the first embodiment.

<Refer to Fourth Embodiment, FIGS. 6, 7, and 10 to 12>
Hereinafter, a fourth embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIGS. 6 and 7, the recovery device 100C in the fourth embodiment includes a primary water tank 10C, a secondary water tank 20C, a partition plate 30C, and a suction unit 40C. The tank 10C, the secondary water tank 20C, and the suction unit 40C are different in structure, and the partition plate 30C is configured to be movable.

  In the present embodiment, the secondary water tank 20C is disposed in the first space 11C of the primary water tank 10C, and has a bottom wall 23C that overlaps the bottom wall of the primary water tank 10C, and a bottom wall. The peripheral wall 24C rises from the peripheral edge of 23C, and a second space 21C is defined by the bottom wall 23C and the peripheral wall 24C. The attachment frame 28 is omitted in this embodiment.

  A pair of guide rails 25 </ b> C and 25 </ b> C extending up and down is provided at a location adjacent to the first space 11 </ b> C in the peripheral wall 24 </ b> C. The partition plate 30C is integrally formed of a flexible plate (for example, a soft plastic plate), and can be adjusted in height with respect to the primary water tank 10C and the secondary water tank 20C. A pair of guide rails 25C and 25C are slidably installed. The upper end portion 31C of the partition plate 30C is the lower end of the overflow port 22C. Moreover, the partition plate 30C and each guide rail 25C are detachably fixed by screws 303C.

  As shown in detail in FIGS. 10, 11, and 12 in addition to FIGS. 6 and 7, the suction unit 40 </ b> C is disposed in the second space 21 </ b> C and is connected to the suction drive unit 41 </ b> C and the waste liquid suction. The fixing member 43C to which the part 42C is fixed, and a plurality of support columns fixed to the bottom wall 23C of the secondary water tank 20C and supporting the fixing member 43C so that the height position relative to the secondary water tank 20C can be adjusted. 44C. The fixing member 43C is formed in a casing shape and has a space inside.

  The housing 412C of the suction drive unit 41C is disposed in the internal space of the fixed member 43C, and is provided with a through hole 403C as in the third embodiment.

  One end of the suction side portion 421C of the waste liquid suction portion 42C is pivotally connected to the housing 412C so that the suction side portion 421C can rotate up and down with respect to the housing 412C, and a float 427C having buoyancy is provided at the other end 426C.

  The waste liquid suction port 422C is provided at the other end 426C of the suction side portion 421C in the present embodiment. Since the other end 426C always floats on the liquid level of the waste liquid by the buoyancy of the float 427C, the waste liquid suction port 422C is always positioned on the liquid level of the waste liquid regardless of the level of the level of the waste liquid. Further, the one end of the suction side portion 421C that is pivotally connected to the housing 412C is provided with an introduction hole 425C that communicates with the waste liquid suction port 422C and that corresponds to the through hole 403C of the housing 412C. . During operation, the waste liquid sucked from the waste liquid suction port 422C flows into the internal space of the fixing member 43C through the introduction hole 403C. Subsequently, the waste liquid is sucked from the through hole 403C of the housing 412C and discharged from the discharge pipe 424C.

  The fixing member 43C is also provided with a plurality of support wings 431C formed so as to extend radially outward at the lower portion thereof. Each support 44C is a threaded rod-like member, and each support wing 431C is screwed to the corresponding support 44C.

  By having the above configuration, in this embodiment, the height of the overflow port 22C can be adjusted by adjusting the height of the partition plate 30C with respect to the primary water tank 10C and the secondary water tank 20C. The application range is wider. In addition, since the waste liquid suction port 422C always moves so as to correspond to the liquid level of the waste liquid by the buoyancy of the float 427C, the suction effect is more excellent. In addition, the height position of the fixing member 43C with respect to the upper end portion 31C of the partition plate 30C can be adjusted by adjusting the screwing degree of the support wing 431C with respect to the support column 44C, and the suction unit 40C can be adjusted to the secondary water storage tank. Since it can also be removed from 20C, maintenance becomes easier.

  Note that the configuration of the suction unit 40C in this embodiment can also be applied to the first to third embodiments, and in that case, the mounting frame 28 can be omitted as in this embodiment. it can.

<Refer to the fifth embodiment, FIGS. 8 and 9>
Hereinafter, a fifth embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIGS. 8 and 9, the recovery device 100D in the fifth embodiment is similar to that in the fourth embodiment, but the structure of the partition plate 30D is different.

  The partition plate 30D includes a plurality of slats 32D that are pivotally connected to each other. Even if the partition plate 30D is configured in this manner, the entire partition plate 30D has flexibility. Therefore, as in the fourth embodiment, if the partition plate 30D is slidably installed along the guide rail 25D, the upper end By adjusting the height of the portion 31D, that is, the height position of the lower end of the overflow port 22D can be adjusted.

  In addition, this embodiment is suitable when introducing a processing machine equipment newly. That is, the primary water storage tank 10D and the secondary water storage tank 20D can be manufactured according to the mechanical equipment to be applied, and the application range is wide.

  In the fourth and fifth embodiments, the partition plates 30C and D are flexible, but when the necessary height position adjustment width of the partition plates 30C and D is relatively small. It is also possible to form a single plate having no flexibility.

<See the sixth embodiment, FIG. 13>
Hereinafter, a sixth embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIG. 13, the collection device 100E in the sixth embodiment uses a suction unit 40E having the same configuration as the suction units 40B and C used in the fourth and fifth embodiments. However, in this embodiment, the primary water tank 10 is omitted, and only the secondary water tank 20E is provided.

  In addition, this embodiment is suitable when applying to the existing processing machine equipment. That is, the present invention can be applied to a waste liquid recovery tank of an existing processing machine facility and is not limited by the height of the waste liquid recovery tank.

<Seventh embodiment, see FIGS. 14 to 16>
Hereinafter, a seventh embodiment of the oil-water separation facility according to the present invention will be described.

  As shown in FIGS. 14, 15, and 16, the structure of the separation device 200 </ b> A is different in the seventh embodiment.

  The tank 80A includes a tank upper member 87A located on the upper end 70A side, a base member 88A located on the bottom end 60A side, a first tubular member 891A connecting the tank upper member 87A and the base member 88A, and A second tubular member 892A.

  The oil / water separation chamber 81A and the drainage chamber 85A are provided in parallel to each other inside the tank upper member 87A. The waste liquid stored in the oil / water separation chamber 81A is separated into oil and water due to the difference in specific gravity, and an oil layer 812A is formed in the upper layer and a water layer 811A is formed in the lower layer.

  The communication port 863A is provided in the base member 88A. The first tubular member 891A communicates the oil / water separation chamber 81A and the communication port 863A, and the second tubular member 892A communicates the communication port 863A and the drainage chamber 85A. The waste oil port 828A is provided near the upper end 70A of the tank 80A so as to communicate the oil / water separation chamber 81A with the outside, and the first overflow weir 827A is provided between the oil / water separation chamber 81A and the waste oil port 828A. It has been. The drain port 851A is provided so as to communicate the drain chamber 85A with the outside, and the second overflow weir 852A is provided between the drain chamber 85A and the drain port 851A.

  As in the first embodiment, the height h1 of the first overflow weir 827A is the height of the second overflow weir 852A when the bottom end 60A of the oil / water separation chamber 81A is used as a reference. It is provided to be higher than the weir crest height h2. Further, as shown in FIGS. 14 and 16, the waste liquid introduction chamber 83A is provided on the upper end 70 side of the tank 80A, and communicates with the oil / water separation chamber 81A via the waste liquid introduction pipe 84. Even when configured as described above, the same effects as those of the first embodiment can be obtained.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited thereto, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

  The oil-water separation facility according to the present invention is useful as an apparatus for collecting and reusing industrial waste liquid.

DESCRIPTION OF SYMBOLS 100 Recovery apparatus 10 Primary water tank 11 1st space 20 Secondary water tank 21 2nd space 22 Overflow port 23 Bottom wall 24 Perimeter wall 25 Guide rail 28 Mounting frame 30 Partition plate 303 Screw 31 Upper end part 32 Slat 40 Suction unit 403 Through hole 41 Suction drive section 411 Motor 412 Housing 413 Impeller 42 Waste oil suction section 421 Suction side section 422 Waste liquid suction port 423 Discharge side section 424 Discharge pipe 425 Introduction hole 426 Other end 427 Float 43 Fixing member 431 Support wing 44 Water level 44 Adjustment unit 51 Replenishment liquid tank 52 Replenishment liquid pipe 53 Water level adjustment pipe 531 Front end 200 Separating device 60 Bottom end 61 Cleaning hole 70 Upper end 80 Tank 81 Oil / water separation chamber 811 Water layer 812 Oil layer 82 Waste oil pipe 821 Conduit section 822 Ring member 82 3 Pump 824 Outer part 825 Inner part 826 Threaded part 827 First overflow weir 828 Oil outlet 83 Waste liquid introduction chamber 831 Partition plate 832 Introduction space 833 Buffer space 84 Waste liquid introduction pipe 841 Waste liquid outlet 85 Waste water chamber 851 2 Overflow weirs 86 Pull-in pipes 861 First end 862 Second end 863 Communication port 87 Tank upper member 88 Base member 891 First tubular member 892 Second tubular member h1 Summit of first overflow weir Height h2 Height of top of second overflow overflow weir

Claims (17)

A facility for recovering a waste liquid containing oil and moisture and separating the oil from the waste liquid, comprising a recovery device and a separation device,
The recovery device is
A primary water tank having a first space for receiving the waste liquid;
A secondary water tank having a second space in communication with the first space through the overflow port and having the second space into which the waste liquid overflowing from the first space flows in via the overflow port;
The waste liquid suction port provided at a position lower than the lower end of the overflow port so that the waste liquid can be sucked in the second space, and the suctioned waste liquid can be discharged to the outside of the recovery device. A waste liquid suction unit having a waste liquid suction port and a discharge pipe communicating with the outside of the recovery device, and a suction unit having a suction drive unit for driving the suction of the waste liquid suction unit,
The separation device includes:
An oil / water separation chamber that communicates with the discharge pipe so that the waste liquid sucked from the waste liquid suction port of the recovery device is introduced and separates the introduced waste liquid into oil and moisture due to a specific gravity difference, and the oil water A drainage chamber that is provided adjacent to the oil / water separation chamber so as to communicate with the separation chamber via a communication port and into which water separated from the waste liquid flows through the communication port is provided inside. The tank
A drain outlet provided in the drain chamber and from which the moisture is discharged to the outside of the tank;
An oil discharge port provided near the upper end of the oil / water separation chamber in the oil / water separation chamber and from which the oil separated from the waste liquid is discharged to the outside of the tank;
A first overflow weir provided between the oil discharge port and the oil / water separation chamber so that the height of the weir top with respect to the bottom end of the oil / water separation chamber is 500 mm to 3500 mm; Oil-water separation equipment characterized by comprising. The suction drive unit is provided in a motor provided above the secondary water tank, a housing disposed in the second space below the motor, and an internal space of the housing. An impeller driven by the motor,
The waste liquid suction part has a suction side part communicating the waste liquid suction port and the internal space of the housing, and a discharge side part communicating the internal space of the housing and the discharge pipe,
The oil / water separation facility according to claim 1, wherein when the impeller is operated, the suction of the waste liquid suction unit is driven. The housing of the suction drive unit is provided with a through hole communicating with the internal space of the housing,
The suction side portion of the waste liquid suction portion has one end pivotally connected to the housing so that the suction side portion can be rotated up and down with respect to the housing, and the other end on the liquid surface of the waste liquid in the second space. It has a float so that it may be located, the introduction hole corresponding to the penetration hole is provided in the one end side, and the waste liquid suction port is provided in the other end side. 2. The oil-water separation facility according to 2.   The suction unit is fixed to the secondary water tank, and the fixing member to which the suction drive part and the waste liquid suction part are fixed, and the height of the fixed member relative to the secondary water tank is adjusted. The oil-water separation facility according to any one of claims 1 to 3, further comprising a plurality of support columns that can be supported. The primary water tank and the secondary water tank are integrally connected, and the recovery device further includes a partition plate provided between the first space and the second space, The oil / water separation facility according to claim 1, wherein an overflow port is provided at an upper end portion of the partition plate. The secondary water tank is disposed in the first space of the primary water tank, and has a bottom wall and a peripheral wall rising from a peripheral edge of the bottom wall, and the second space is The wall is defined by a bottom wall and the peripheral wall, and the peripheral wall has a partition plate provided between the first space and the second space, and the overflow port is the partition plate. The oil-water separation facility according to claim 1, wherein the oil-water separation facility is provided at an upper end portion of the oil. The secondary water tank has a pair of guide rails extending vertically,
The partition plate is integrally formed of a flexible plate body, and is slidable along the guide rail so that the height position can be adjusted with respect to the primary water storage tank and the secondary water storage tank. The oil-water separation facility according to claim 5 or 6, wherein an upper end portion of the oil-water separation port is a lower end of the overflow port. The secondary water tank has a pair of guide rails extending vertically,
The partition plate includes a plurality of slats pivoted to each other, and is slidably installed along the guide rail so that the height position of the partition plate can be adjusted with respect to the primary water tank and the secondary water tank. The oil-water separation facility according to claim 5 or 6, wherein an upper end portion thereof is a lower end of the overflow port. The recovery device further includes a water level adjustment unit provided above the secondary water tank, and the water level adjustment unit always keeps the level of the waste liquid in the second space at the position of the waste liquid suction port. The oil-water separation facility according to claim 1, wherein the oil-water separation facility is configured to adjust the water level of the waste liquid so as to correspond. The water level adjustment unit includes a replenisher tank provided above the secondary water tank, a replenisher pipe extending from the replenisher tank so as to enter the second space, and the replenisher tank. A water level adjusting pipe extending toward the liquid level of the waste liquid in the second space, and the water level adjusting pipe has a tip at the second space side at a height position. The oil-water separation facility according to claim 9, wherein the oil-water separation facility is located between a lower end of the overflow port and the waste liquid suction port. The separator further includes a second overflow weir provided between the drainage chamber and the drainage port, and at the height of each weir top with respect to the bottom end of the oil-water separation chamber, The oil-water separation facility according to claim 1, wherein the first overflow weir is provided to be higher than the second overflow weir. The separation device further comprises an oil drain pipe installed in the tank so as to extend from the oil / water separation chamber to the outside of the tank,
The oil drain pipe has a conduit portion and a ring member,
The conduit portion includes an outer portion disposed outside the tank, an inner portion disposed in the oil / water separation chamber such that one end communicates with the outer portion and the other end communicates with the oil discharge port. And
A threaded part is provided at the other end of the inner part, the ring member is screwed to the threaded part, and the first overflow weir is formed at the upper end of the ring member, The oil / water separation facility according to claim 1, wherein an oil discharge port is surrounded by the first overflow weir. The oil / water separation according to claim 12, wherein the oil drain pipe of the separation device further includes a pump provided in the conduit portion so that the oil / water separation chamber can be kept airtight when the operation is stopped. Facility. The tank of the separation device further includes a lead-in pipe communicating the oil / water separation chamber and the drainage chamber;
The lead-in pipe has a first end portion located in the oil / water separation chamber and a second end portion located in the drainage chamber, and the communication port includes the first end portion and the first end portion. The oil-water separation facility according to claim 12, wherein the oil-water separation facility is provided so as to connect the second end portion. The separation device further comprises a waste liquid introduction pipe provided near the upper end of the tank so as to communicate the discharge pipe of the recovery device and the oil / water separation chamber;
The oil / water separation facility according to claim 11, wherein the waste liquid introduction pipe has a waste liquid outlet port disposed at a position lower than the oil drain port in the oil / water separation chamber. The tank further includes a waste liquid introduction chamber provided between the waste liquid introduction pipe and the discharge pipe adjacent to the oil / water separation chamber, and a partition plate provided in the waste liquid introduction chamber,
The partition plate divides the waste liquid introduction chamber into an introduction space connected to the discharge pipe and a buffer space communicating with the oil / water separation chamber via the waste liquid outlet, and an upper end of the partition plate. The oil / water separation facility according to claim 15, wherein the oil / water separation facility is provided so as to be at a position higher than the oil port. The tank of the separation device further includes a tank upper member, a base member, and a first tubular member and a second tubular member respectively connecting the tank upper member and the base member,
The oil-water separation chamber and the drainage chamber are provided in the tank upper member in parallel with each other,
The communication port is provided in the base member,
The first tubular member communicates the oil / water separation chamber and the communication port,
12. The oil / water separation facility according to claim 11, wherein the second tubular member communicates the communication port and the drainage chamber.

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