JP5266741B2 - Method of operating oil recovery apparatus and oil recovery apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating method of oil recovery device and an oil recovery device which simplify the configuration of the recovery device, and enable an improvement of recovery efficiency and energy saving by effectively performing recovery operation according to the amount of oil floating on liquid. <P>SOLUTION: In the oil recovery device which moves a trapping body 5 having a certain length up and down in the vertical direction, makes liquid floating oil adhere to the trapping body 5 when moving down the trapping body 5, and removes and recovers the adhering floating oil with a collecting body (a separation means) 9 to perform recovery operation when moving up the trapping body 5 to above the liquid surface, the recovery operation and recovery operation stop are alternately carried out while stopping the vertical movement of the trapping body 5 for a predetermined time. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an operation method of an oil recovery apparatus and an oil recovery apparatus that recovers oil floating on a liquid surface portion by separating it from a liquid.

  Oil such as crude oil, heavy oil, and light oil that has leaked into and leaked into the underground soil may diffuse through the groundwater zone in the soil, and contamination by these may spread, and be collected efficiently with simplified equipment. Is desired. Moreover, cutting fluid and processing oil are used at the time of use with a processing machine, but it is necessary to store these in, for example, an underfloor or underground tank and separate and recover the processing oil. Conventionally, the following are known as means for solving these problems.

  A pollutant removing device having a strip-shaped adsorbent, a travel drive unit, and a separation and recovery unit. The belt-like adsorbent is wound endlessly between a plurality of rollers, and circulates between the lower end side of the excavation hole and the ground. The travel drive unit includes a motor that is installed on the ground side and that is axially coupled to the top roller, and a motor drive source. The separation / recovery unit is installed on the ground side and includes a pinching roller and a recovery tank. The pinching roller is installed below the top roller, pinches the adsorbent that circulates with the top roller, and squeezes the oil that is adsorbed and held on the adsorbing mat of the adsorbent (for example, Patent Documents). 1).

  In addition, the endless belt is suspended in a freely rotating state on a carriage equipped with moving wheels and movable on the floor, and the rotating device that rotates the endless belt on this carriage and the oil attached to the endless belt are removed from the endless belt. A collecting device for collecting is provided, and a belt accommodating device for pulling up and accommodating the endless belt on the carriage when the endless belt is not used. Since the level of the liquid level in the tank may vary from tank to tank, the vertical position of the adjustment roller is adjusted so that the tension pulley sinks below the liquid level. The vertical position of the adjustment roller is adjusted by changing the groove for the level adjustment handle. That is, an adjusting device that adjusts the depth at which the belt hangs down from the carriage is configured by the adjusting roller, the level adjusting handle, and the plurality of grooves (for example, see Patent Document 2).

  Further, a rotatable driving roller, a weight roller suspended by the driving roller via a belt driven by the driving roller, and a scraping portion whose scraping portion comes into contact with the belt on the lower side track of the belt. And rotating the drive roller in a state where the weight roller side of the belt is immersed in the first liquid to attach the second liquid floating on the surface of the first liquid to the belt. In the floating oil removing apparatus configured to scrape off the adhering second liquid by the scraping member, a suction body that sucks the second liquid adhering to the belt by capillary action is provided on the scraping member. Since the scraping member is provided with a suction member for sucking the second liquid adhering to the belt by capillary action, even if the second liquid is a low-viscosity liquid, suction is performed by the surface tension of the second liquid and capillary action. And separated from the belt. The mounting stay is fixed to the side wall of the oil tank with a fixing member such as a bolt or a nut via an appropriate auxiliary mounting plate. In this case, the height of the mounting is adjusted by using the long hole of the mounting stay so that it is immersed in the weight roller cutting oil (for example, see Patent Document 3).

Further, the capturing body having a certain length is moved up and down in the vertical direction. When the capturing body descends, liquid floating oil is attached to the capturing body. And when this trapping body rises above the liquid surface, the adhering floating oil is separated by the separating means and recovered (see, for example, Patent Document 4).
Japanese Patent Laid-Open No. 10-314714 JP 2004-8964 A Registered Utility Model No. 3005712 JP 2006-289314 A

  However, those described in Patent Documents 1, 2, and 3 described above are endless belts (adsorbents), are supported by a plurality of rollers, and are rotationally driven to circulate. Therefore, the structure is complicated and large. In addition, there is a problem that noise is likely to increase due to circulation running, and durability and driving power of the endless belt are increased. Furthermore, the distance between the liquid surface where the oil floats and the means for separating and separating the oil from the endless belt varies depending on the situation, and it is difficult to cope with this. That is, the length of the endless belt needs to be changed every time, and there are problems in versatility and maintainability. Further, in Patent Document 2, the above-mentioned distance is changed by adjusting the vertical position of the adjusting roller, and in Patent Document 3, the height of the mounting stay for fixing the driving roller 2 is changed by a bolt and a nut. However, it is gradual and cannot be adjusted greatly.

  Furthermore, the ones described in Patent Documents 1, 2, and 3 are used to continuously collect the oil floating on the liquid by continuously performing the recovery operation regardless of the floating oil accumulation state. There are problems such as durability of the belt, separation and separation means, energy saving due to power consumption of the driving means, and reduction in recovery efficiency in a state where floating oil is reduced.

  Moreover, what was described in patent document 4 moves the capturing body which has fixed length up and down in the perpendicular direction. When the capturing body descends, liquid floating oil is attached to the capturing body. When the trapping body rises above the liquid surface, the adhering floating oil is separated by the separating means and collected. As a result, the configuration of the recovery device can be simplified to improve low noise and durability, and can arbitrarily cope with various situations such as the position of the liquid surface where the oil floats.

  However, similar to those described in Patent Literatures 1, 2, and 3, the oil that floats on the liquid is recovered by continuously performing the recovery operation regardless of the accumulated state of the floating oil. Therefore, there are problems such as durability of the entire apparatus, the capturing body and the separating means, energy saving due to power consumption of the driving means for moving the capturing body in the vertical direction, and a reduction in recovery efficiency in a state where floating oil is reduced.

  The present invention solves the above-mentioned conventional problems, simplifies the configuration of the recovery device, and improves the recovery efficiency and saves energy by effectively performing the recovery operation according to the amount of oil floating on the liquid. An object of the present invention is to provide an oil recovery apparatus operating method and an oil recovery apparatus.

In order to solve the above conventional problems, the method of operating oil recovery apparatus of the present invention, is moved up and down the captured body having a predetermined length in the vertical direction, when the captor is lowered, the oil floating on the liquid Is attached to the trapping body, and when the trapping body rises above the liquid surface, in the oil recovery apparatus that performs the recovery operation by separating the attached oil by the separating means, the vertical movement of the trapping body is stopped for a predetermined period. There lines alternately stop the recovery operation and the recovery operation while, when the amount of recovered oil is reduced below a predetermined amount, it stops the recovery operation of the oil cylinder to a wellbore that is drilled from the ground to reach the groundwater zone A passage is formed by inserting a state body, a hole is formed in the lower part of the cylindrical body located in the groundwater zone so that floating oil enters, and the groundwater in the well that is the passage that has been excavated is pumped up, Facilitates the movement of oil in groundwater zones into wells It is characterized in that that.

Further, the oil recovery apparatus of the present invention moves a capturing body having a certain length in the vertical direction, and when the capturing body descends , the oil floating on the liquid is attached to the capturing body, and the capturing body is liquid. An oil recovery apparatus that performs a recovery operation by separating attached oil by a separating means when it rises above a surface, comprising a control means for controlling the vertical movement of the capturing body, and the recovery operation by the control means and have rows alternately stop the recovery operation, comprising a pumping means for pumping the groundwater drilled passage to reach the groundwater zone from the ground, the lower portion of the passageway located groundwater zone as oil floating enters When a hole is formed and the amount of recovered oil measured by the recovered oil amount measuring means is less than or equal to a predetermined amount, the oil recovery operation is stopped, the groundwater in the passage is pumped by the pumping means, and the passage from the groundwater zone to the passage Of the oil present in the groundwater zone It is characterized in that to promote the movement.

As described above, according to the operation method of the oil recovery apparatus and the oil recovery apparatus of the present invention , the movement of the oil existing in the groundwater zone into the excavated passage is promoted, and the oil recovery in the contaminated area is further shortened. Can be done in time. In addition, the configuration can be simplified, and the recovery operation can be effectively performed according to the amount of oil floating on the liquid to improve the recovery efficiency and save energy.

In the first invention, a capturing body having a certain length is moved up and down in the vertical direction, and when the capturing body descends, oil floating on the liquid is attached to the capturing body, and the capturing body is above the liquid surface. In the oil recovery apparatus that performs the recovery operation by separating the attached oil by the separating means when rising, the recovery operation and the recovery operation are alternately stopped while the vertical movement of the capturing body is stopped for a predetermined period of time . When the recovery amount is reduced below the predetermined amount, the oil recovery operation is stopped , the cylindrical body is inserted into the excavation hole excavated so as to reach the groundwater zone from the ground, the passage is formed, and the cylinder located in the groundwater zone A hole is formed in the lower part of the body so that floating oil can enter , and groundwater in the well that is the excavated passage is pumped up, and the movement of oil existing in the groundwater zone into the well is promoted. A method for operating the oil recovery device A.

This facilitates the movement of the oil present in the groundwater zone into the excavated well and allows the oil in the contaminated area to be recovered in a shorter time. In addition, the configuration can be simplified, and the recovery operation can be effectively performed according to the amount of oil floating on the liquid to improve the recovery efficiency and save energy.

In the second invention, a capturing body having a certain length is moved up and down in the vertical direction, and when the capturing body descends, oil floating on the liquid is attached to the capturing body, and the capturing body is above the liquid surface. An oil recovery apparatus for performing recovery operation by separating attached oil with a separating means when rising, and comprising control means for controlling the vertical movement of the capturing body, and stopping the recovery operation and the recovery operation by the control means The pump is equipped with pumping means for pumping up groundwater in the passage excavated so as to reach the groundwater zone from the ground , and a hole is formed in the lower part of the passage located in the groundwater zone so that floating oil enters and is recovered. when recovery of the oil measured by the oil amount measuring means is below a predetermined amount, stops the recovery operation of the oil was pumped by pumping means groundwater of the passage, the groundwater zone into said passage from said groundwater zone to promote the movement of existing oil Oil recovery apparatus you wherein a.

Thereby, the movement of the oil existing in the groundwater zone into the excavated passage can be promoted, and the oil in the contaminated area can be recovered in a shorter time. In addition, the configuration can be simplified, and the recovery operation can be effectively performed according to the amount of oil floating on the liquid to improve the recovery efficiency and save energy.

  An embodiment of the present invention will be described below with reference to FIGS. 1 is a partial cross-sectional view of an oil recovery apparatus, FIG. 2 is a perspective view of a capturing means and a separating means section, FIG. 3 is a perspective view showing another configuration of the capturing means and the separating means section, and FIGS. FIG. 5 is another configuration diagram of the capturing means. FIG. 7 is a graph showing the basic relationship between the oil recovery operation and the oil recovery amount, and FIG. 8 is a partial side sectional view of another oil recovery device.

  1 and 2, a fixing plate 2 is provided inside the housing 1, and a rotating body 3 having a winding portion 3 a is provided on the fixing plate 2. The rotating body 3 is positively connected by a geared motor (driving means) 4. Conversely, it is rotationally driven. A detecting means 3b using a proximity sensor, a magnetic sensor, an optical sensor or the like for detecting the number of rotations or the rotation angle of the rotating body 3 is provided facing the rotating body 3, and the detecting means 3b and the geared motor (driving means) 4 are provided. The control means 4a to which the recovered oil amount measuring means 20 is connected is provided. Forward / reverse rotational drive control of the rotating body 3 is performed by the control means 4a. One end of a flexible wire 5 serving as a capturing body is connected to the winding portion 3a, and a weight 6 is attached to the other end portion. The rotating body 3 and the geared motor (driving means) 4 constitute vertical movement means. The geared motor 4 that is the driving means may be a stepping motor.

  A passage 8 is formed inside the cylindrical body 7, and a wire 5 as a capturing body is inserted into the passage 8. In addition, a collector 9 that is a separating unit that sandwiches the wire 5 and separates the oil attached to the wire 5 is fixed to the fixing plate 2. The passage 9a of the collector 9 is made of a material having elasticity such as rubber so that the entire circumference of the wire 5 is in pressure contact with the wire 5 to some extent. Moreover, in order to make it easy to insert the wire 5 into the passage hole 9a of the collector 9, a cut 9b is formed. Below the collection body 9, a guide 10 fixed to the fixed plate 2 that receives the falling oil separated by the collection body 9 and guides it to the guide cylinder 11 is provided. Oil is recovered from the guide tube 11 to the recovery container 12.

  The underground soil 13 and the groundwater zone 14 below the housing 1 are excavated, and the tubular body 15 is inserted into the excavation hole to form the passage 16. The bottom of the cylindrical body 15 located in the groundwater zone 14 is formed with numerous holes and slits (not shown) so that groundwater and floating oil can sufficiently enter and pass through. The passage 8 and the passage 16 inside the tubular body 15 are installed inside the tubular body 7 so as to be coaxial.

  FIG. 3 shows an example in which a plurality of wires 5 that are the capturing bodies are configured, and FIG. 4 shows a capturing body in which a large number of spheres 17 are passed through the wires 5. FIG. 5 shows a wire 5 with a linear adhering body 18 added thereto by means such as flocking, and FIG. 6 shows a capturing body made up of a sheet 19 having a certain width. The recovered oil amount measuring means 20 uses a weighing device that constantly measures the mass of the recovered container 12 and measures the cumulative mass change of the recovered oil quantity. 12 may be a means for measuring the level of the oil level in 12.

  Next, the basic operation of the oil recovery operation in this embodiment will be described. The geared motor 4 which is a driving means is driven to rotate the rotating body 3 so that the wire 5 which is the capturing body wound around the winding portion 3a of the rotating body 3 is connected to the passage 8 and the passage 16 with the weight 6 at the lower end. As shown in FIG. At this time, the wire 5 is positioned substantially at the center of the passage 8 and the passage 16 with reference to the collector 9 passage hole 9a which is oil separation means. The inner diameters of the passage 8 and the passage 16 may be about 50 millimeters, for example.

  The position at which the weight 6 reaches the lower part of the groundwater zone 14 is stored in the control means 4a and set as the installation condition. Next, the rotating body 3 is rotated to wind the wire 5 around the winding unit 3a and move it upward. At this time, the wire 5 sequentially contacts the oil floating on the liquid surface of the groundwater zone 14, and the floating oil adheres to the surface of the wire 5.

  Further, when the lower end of the wire 5 to which the floating oil adheres passes through the collecting body 9 which is an oil separating means for separating the oil, the rotating direction of the rotating body 3 is reversed to move the wire 5 downward, and the weight 6 is a groundwater zone. 14, the direction of rotation of the rotating body 3 is reversed again to move the wire 5 upward, and the wire 5 that is a capturing body having a certain length is moved up and down in a vertical direction at a certain period. Is.

  Through the above-described cycle, the floating oil attached to the wire 5 is separated from the wire 5 and dropped at the passage hole 9a portion of the collector 9 which is a separation means. This is received by the inclined guide 10 and flows into the guide cylinder 11, and the oil is recovered in the recovery container 12. Thus, the wire 5 which is a capturing body having a certain length is moved up and down in the vertical direction, and when the wire 5 descends, liquid floating oil is attached to the wire 5, and the wire 5 is a liquid surface which is groundwater. When rising upward, the attached floating oil is separated and collected by the collector 9 as the separating means.

  In the prior art, an endless belt to which oil is attached is supported by a plurality of rollers and is driven to rotate. Therefore, the structure is complicated and large, and the cost is high. Further, there are problems in that the circulating travel produces a large noise, the durability of the belt, and the required driving power increase. On the other hand, in the embodiment of the present invention, the wire 5 that is the capturing body is moved up and down in the vertical direction, so that the configuration of the recovery device can be simplified, noise reduction, and durability improvement can be achieved. it can.

  Further, by winding the wire 5 as a capturing body around the rotating body 3 and controlling the geared motor 4 as the driving means of the rotating body 3 to forward and reverse rotation, the wire 5 can be moved up and down with simple means with high accuracy. Further, the period of the vertical movement of the wire 5 can be adjusted by changing the rotation speed of the rotating body 3. In addition, the up-and-down movement of the wire 5 which is a capturing body is made 5 to 10 times per minute, for example.

  Furthermore, the distance between the liquid surface where the oil floats and the separation means for separating and releasing the oil vary depending on the situation. Conventionally, in order to cope with this, the belt is replaced or the vertical distance is adjusted by mechanical means. However, maintenance is required every time, and the adjustment range of the vertical distance is not large. On the other hand, according to the present embodiment, by controlling the number of rotations or the rotation angle in the forward and reverse rotation directions of the driving means of the rotating body, the moving distance for moving the wire 5 as the capturing body up and down can be easily set. Can be set, and can easily cope with the distance difference from the ground to the groundwater zone 14 parts, that is, the difference in distance between the liquid surface where the oil floats and the collector 9 which is a separating means for separating and releasing the oil. I can do this.

  In addition, the recovery device is simplified by excavating to reach the groundwater zone from the ground, forming a passage, moving the wire 5 as a capturing body vertically in the passage, and collecting floating oil in the groundwater As well as low noise and improved durability. In particular, noise is remarkably reduced, and no large driving power of the rotating body 3 is required, and the durability is excellent, so that noise pollution is not caused even during day and night operation, and energy saving can be achieved. .

  In addition, it is necessary to always insert an endless belt into the conventional liquid and to provide a rotating roller at the lower end of the endless belt, thereby increasing the size of the passage for inserting the roller and preventing contact with others. There is. Therefore, there is a problem that requires great power, equipment, and labor for underground excavation. On the other hand, according to the present embodiment, it is not necessary to provide a rotating roller at the lower end of the wire 5 that is a capturing body. As a result, the diameter of the passage 16 can be reduced, and the work can be easily performed without requiring large power and equipment for excavation in the ground.

  1 and 2 is configured by a plurality of wires 5 shown in FIG. 3, and a plurality of spheres 17 shown in FIG. 4 are configured to pass through the wires 5. FIG. The wire 5 shown in Fig. 5 may be formed by adding a linear adhering body 18 by means such as flocking. In this case, more floating oil is used without increasing the diameter of the passages 8 and 16. It is possible to improve the collection efficiency by adhering.

  The capturing body shown in FIG. 6 is configured by a capturing body made of a sheet 19 having a certain width, and in particular, when an elongated hole and a relatively large well can be excavated to the underground water zone 14, Recovery efficiency can be improved by attaching more floating oil. The sheet 19 described above may be composed of a flexible plate, a braided fiber, or the like.

  In the prior art, an endless belt is supported by a plurality of rollers and is driven to rotate so that it circulates. Therefore, it is necessary to attach oil to one side of the belt that does not contact the rollers. On the other hand, in the embodiment of the present invention, the floating oil is attached to both surfaces of the sheet 19 having a certain width which is a capturing body, and the attached floating oil is separated and collected by the collecting body 9 which is a separating means. Therefore, the collection efficiency can be remarkably improved as compared with the prior art. In addition, the capturing body of the wire 5 and the sheet 19 has flexibility and can be stably moved up and down while always maintaining the vertical direction by providing a weight at the lower end.

  Further, as described above, in the prior art, an endless belt to which oil is attached is supported by a plurality of rollers and is rotationally driven to circulate. Therefore, the structure is complicated and large, and the cost is high. In addition, the circulation travels a lot of noise, and there are problems in terms of belt durability and necessary driving power. On the other hand, in the embodiment of the present invention, the sheet 19 as the capturing body is moved up and down in the vertical direction and the floating oil is separated and recovered by the capturing body 9 as the separating means. It can be simplified, noise reduction, and durability can be improved.

  In addition, even after the lower end of the wire 5 and the sheet 19 which is a flexible capturing body contact the bottom of a partition area such as a groundwater zone, a passage (well) or a container, the wire 5 and the sheet 19 are further lowered by a certain distance. Then, the length of the wire 5 and the sheet 19 to which the oil adheres can be increased, so that more efficient recovery can be achieved.

  Further, in this embodiment, the geared motor 4, which is a driving means, the rotating body 3, and the winding unit 3a of the rotating body 3 are used as the moving means of the capturing body. However, the capturing body is composed of a plurality of rotating bodies (not shown). ) And controlling the at least one rotating body driving means to forward and reverse rotation to move the capturing body up and down, and controlling the forward and reverse rotational speed or rotational angle of the rotating body driving means to capture. The structure which sets the movement distance which moves a body up and down, and another means may be sufficient. Further, as a means for separating the adhered oil, the passage 9a of the collector 9 is used. However, a suction means using a pump or the like, an oil detaching means using a high-speed air flow, or the like may be used, which is limited to this embodiment. It is not something.

  The basic configuration and operation of this embodiment are as described above. Next, the amount of oil recovered using the recovered oil amount measuring means 20 is measured, and the operation of the oil recovery apparatus based on the measured value is performed. A method will be described. FIG. 7 is a graph showing the basic relationship between the oil recovery operation and the oil recovery amount in an example in which the passage 16 is excavated to the groundwater zone 14 and the floating oil on the liquid is recovered. A change in the accumulated oil amount recovered using the recovered oil amount measuring means 20 is shown.

  A state in the initial recovery operation period A in which the wire 5 that is a capturing body having a certain length is moved vertically in the vertical direction at a certain period to collect the floating oil on the liquid will be described. Since the initial amount of floating oil existing on the liquid in the passage 16 excavated to the groundwater zone 14 is large, the amount of oil recovered per unit time is large at the start of the recovery operation. As the amount of floating oil present on the liquid inside decreases, the amount of recovered oil also tends to decrease. If the recovery operation is continued for a predetermined time, the amount of oil recovered per unit time becomes very small, and even if the recovery operation is continued in this state, the recovery effect cannot be exhibited.

  Therefore, when the oil recovery amount measured by the recovered oil amount measuring means 20 decreases to a predetermined amount or less, the drive of the geared motor (driving means) 4 is stopped by the control means, which is indicated by a recovery operation stop period A in FIG. Thus, the recovery operation is stopped for a predetermined time. During the recovery operation stop period A, the amount of floating oil present on the liquid in the passage 16 excavated by the movement of groundwater in the groundwater zone gradually increases.

  After stopping the collection operation for a predetermined period, the control means starts driving the geared motor 4, and the collection operation is resumed and continued for a predetermined time as shown by the collection operation period B in FIG. In the recovery operation period B, the same tendency as the change in the oil recovery amount in the recovery operation period A is observed.

  Also during the recovery operation period B, when the oil recovery amount measured by the recovered oil amount measuring means 20 decreases to a predetermined amount or less, the drive of the geared motor 4 is stopped by the control means, and is indicated by the recovery operation stop period B in FIG. Thus, the recovery operation is stopped for a predetermined time.

  Thereafter, the recovery operation and the recovery operation are alternately stopped, and the oil recovery in the oil-contaminated area is continued. The oil recovery in the oil-contaminated area is completed after confirming that the oil recovery amount has decreased to a predetermined amount or less even if a predetermined recovery operation stop period is provided.

  The number of repetitions of the recovery operation and the stop of the recovery operation, the period of the recovery operation and the recovery operation stop are the amount of oil to be recovered in the oil-contaminated area, the movement speed of groundwater into the excavated passage 16 in the groundwater zone, heavy oil, etc. The optimum condition may be set although it varies depending on the permeation rate of the oil.

  Note that the amount of oil recovered during the recovery operation has a recovery capacity of, for example, a maximum of 0.1 liter per minute when the amount of floating oil present on the liquid is relatively large. The average amount of oil recovered during continuous recovery operation is, for example, about 7 milliliters per hour.

  As described above, those described in Patent Documents 1, 2, 3, and 4 recover oil that floats on a liquid by continuously performing a recovery operation regardless of the state of floating oil accumulation. Therefore, there are problems such as durability of the entire apparatus and the capturing body and separation means, energy saving due to power consumption of the capturing means driving means, and reduction in recovery efficiency in a state where floating oil is reduced.

  On the other hand, the operating method and the oil recovery apparatus of the oil recovery apparatus of the present invention move the wire 5 having a certain length in the vertical direction, and when the wire 5 descends, the liquid floating oil is captured. When the wire 5 rises above the liquid surface, a collecting operation is performed in which the attached floating oil is separated and collected by the collector (separating means) 9. Furthermore, the control means 4a which controls the up-and-down movement of the wire 5 is provided, and the control operation 4a alternately stops the recovery operation for moving the wire 5 up and down and the recovery operation for not moving the wire 5 up and down.

  Therefore, the configuration of the oil recovery apparatus can be simplified, and the recovery operation can be effectively performed according to the amount of oil floating on the liquid, thereby improving the recovery efficiency and saving energy. Furthermore, by providing a stop period for the recovery operation, durability against wear deterioration of the wire 5 and the collector (separating means) 9 can be improved.

  Further, a recovery oil amount measuring means 20 for measuring the oil recovery amount during the recovery operation is provided, and when the oil recovery amount measured by the recovered oil amount measurement means 20 is reduced below a predetermined amount, the recovery operation is performed by the control means 4a. Is stopped for a predetermined period, the amount of oil floating on the liquid can be easily grasped while performing the recovery operation, and the recovery operation can be effectively performed to improve the recovery efficiency and save energy.

  Further, it comprises a recovered oil amount measuring means 20 for measuring the amount of oil recovered during the recovery operation, and when the recovered oil amount measured by the recovered oil amount measuring means 20 is reduced below a predetermined amount, it is moved up and down by the control means 4a. It is also possible to adjust the stop period of the recovery operation by increasing the interval between cycles.

  Thus, the amount of oil floating on the liquid can be easily grasped while performing the recovery operation, and the recovery operation can be effectively performed to improve the recovery efficiency and save energy.

  Further, during the stop period of the recovery operation, the wire 5 is moved up and down for a predetermined cycle every predetermined time, and the amount of oil recovered at that time is measured by the recovered oil amount measuring means 20 and measured by the recovered oil amount measuring means 20. Based on the measured value, the control means 4a can determine the resumption timing of the recovery operation.

  Thereby, the amount of oil floating on the liquid during the stop period of the recovery operation can be easily grasped, and the recovery operation can be effectively started to improve the recovery efficiency and save energy.

  Furthermore, a pumping means (not shown) for pumping groundwater in the passage 16 excavated so as to reach the groundwater zone from the ground is provided, and when the oil recovery amount measured by the recovered oil amount measuring means 20 is less than a predetermined amount, It is also possible to stop the recovery operation and pump up the groundwater in the passage 16 by the pumping means to promote the movement of oil from the groundwater zone into the passage 16.

  Thereby, the movement of the oil existing in the groundwater zone into the excavated passage 16 can be promoted, and the oil in the contaminated area can be recovered in a shorter time.

  Next, another oil recovery apparatus of the present invention will be described with reference to FIG. FIG. 8 is a partial side sectional view of the oil recovery apparatus. The same reference numerals as those in FIGS. The difference is that, for example, cutting oil and lubricating oil used in cutting with a machine tool are stored and partitioned in the container 21 and the lubricating oil separated and floated on the water-soluble cutting oil is recovered.

  In particular, when the liquid level in the container 21 for storing cutting oil and lubricating oil changes, and also in the installation situation such as when the container 21 is provided under the floor or underground, there are various situations such as the position of the liquid level where the lubricating oil floats. It can be arbitrarily adapted, and the structure of the recovery device can be simplified to improve low noise and durability. Furthermore, the above-described operation method of the oil recovery apparatus can be implemented, and the same effect can be obtained.

  As described above, according to the operation method of the oil recovery apparatus and the oil recovery apparatus of the present invention, the configuration is simplified, and the recovery operation is effectively performed according to the amount of oil floating on the liquid. Can be improved and energy can be saved.

  The present invention can also be applied to the field of collecting adhesive substances that are separated and suspended on a liquid.

1 is a partial sectional side view of an oil recovery apparatus according to an embodiment of the present invention. The perspective view of the capture | acquisition means and isolation | separation means part of the oil recovery apparatus of one Example of this invention The perspective view which shows the other structure of a capture means and a separation means part Other configuration diagram of capture means Other configuration diagram of capture means Other configuration diagram of capture means Graph showing basic relationship between oil recovery operation and oil recovery amount Partial side sectional view of another oil recovery apparatus of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Fixing plate 3 Rotating body 3a Winding part 3b Detection means 4 Geared motor (drive means)
4a Control means 5 Wire (capturing body)
6 Weight 7 Cylindrical body 8 Passage 9 Collection body (separation means)
9a passage hole 10 guide 11 guide cylinder 12 collection container 13 underground soil 14 groundwater zone 15 cylindrical body 16 passage 17 sphere 18 linear adhering body (capturing body)
19 Sheet (capturing body)
20 Recovered oil amount measuring means 21 Container

Claims (2)

When the capture body having a certain length is moved up and down in the vertical direction, when the capture body descends, the oil floating on the liquid adheres to the capture body, and when the capture body rises above the liquid surface, it adheres In the oil recovery apparatus that performs the recovery operation by separating the oil by the separating means, the recovery operation and the recovery operation are alternately stopped while the vertical movement of the capturing body is stopped for a predetermined period,
When the amount of oil recovered falls below a predetermined amount, the oil recovery operation is stopped , a cylindrical body is inserted into the excavation hole excavated to reach the groundwater zone from the ground, and a passage is formed and located in the groundwater zone A hole is formed in the lower part of the cylindrical body so that floating oil enters , and the groundwater in the well that is the passage that has been excavated is pumped up, and the movement of the oil existing in the groundwater zone into the well is promoted. how the operation of the oil recovery device you wherein a. When the capture body having a certain length is moved up and down in the vertical direction, when the capture body descends, the oil floating on the liquid adheres to the capture body, and when the capture body rises above the liquid surface, it adheres An oil recovery apparatus that performs a recovery operation by separating oil by a separation unit, and includes a control unit that controls the vertical movement of the capturing body, and alternately performs a stop of the recovery operation and the recovery operation by the control unit,
It is equipped with pumping means for pumping up groundwater in a passage excavated so as to reach the groundwater zone from the ground, and a hole is formed in the lower part of the passage located in the groundwater zone so that floating oil enters, and the recovered oil amount measuring means when recovery of the measured oil is equal to or less than a predetermined amount, stops the recovery operation of the oil, the groundwater in said passageway and pumped by pumping means, moving from the groundwater zone of the oil present in the groundwater zone into the passageway oil recovery apparatus characterized in that to promote.

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