Oil-skimmer

Abstract

The present invention relates to a vertical oil skimmer using an MOP used to collect oil from wastewater in steel mills, oil refineries, petrochemical plants, etc. More specifically, the invention is characterized by effectively absorbing, extracting, and separating oil from the surface of wastewater stored in a storage tank (10) by means of an endless track-type MOP (31) and vertically transporting it, extracting oil and water by means of a roller compression method driven by a driving motor, and then separating and discharging the oil and water by means of a specific gravity difference in an oil-water separation means, thereby providing excellent efficiency of use compared to conventional methods.

Description

Technology Field

[0001] The present invention relates to a vertical oil skimmer used to collect oil and suspended solids from wastewater in steel mills, oil refineries, petrochemical plants, food factories, etc., and more specifically, to a vertical oil skimmer using an MOP that separates and collects oil on the surface of wastewater by vertically moving it using an absorption method by the MOP. Background Technology

[0003] Generally, drain pits are located in various places at facilities such as oil refineries and petrochemical plants, and the collection of oil contained in the water from these drain pits was required.

[0004] An oil skimmer was used for this purpose.

[0005] In particular, belt-type oil skimmers were applied to drain pits in relatively narrow and deep places, such as drains and drainage tanks.

[0006] Conventional belt-type oil skimmers utilize a belt to adsorb and transport oil and impurities from wastewater, while separating and removing them through a scraper. Specifically, as described in Published Patent No. 10-2016-0143263 (December 14, 2016), the device comprises: a drive motor; an upper drum coupled to the drive shaft of the drive motor and driven for rotation; a lower drum rotatably installed below the upper drum and located within the storage tank; a belt that drives and connects the upper drum and the lower drum and adsorbs and transports impurities contained in the waste processing oil within the storage tank; a scraper located on one side of the belt to scrape and separate the impurities adsorbed by the belt; and a temporary storage hopper located below the scraper, into which the impurities separated and removed by the scraper flow, and which is equipped with a discharge pipe on one side. It was configured with a compressed air injection means that injects compressed air into the discharge pipe of the temporary storage hopper to prevent blockage of the discharge pipe due to impurities, thereby adsorbing and transporting oil or impurities by a belt while separating them by a scraper and separating them into the temporary storage hopper, and ensuring that even high-concentration impurities are discharged from the temporary storage hopper without blockage through the injection of compressed air.

[0007] However, the aforementioned conventional belt-type oil skimmer transports wastewater by adsorbing oil or impurities, which results in reduced operational efficiency due to the low adsorption efficiency of oil or impurities. Additionally, the separation of oil or impurities adsorbed on the belt cannot be effectively removed simply by a scraper, leading to reduced efficiency. Prior art literature

[0009] Registered Patent No. 10-1875707 (July 2, 2018) Registered Patent No. 10-1557834 (September 30, 2015) The problem to be solved

[0010] The present invention was developed to solve the various problems of the aforementioned conventional technology. Its purpose is to provide excellent usage efficiency by vertically moving and separating oil on the surface of wastewater using an absorption method by MOP, and by effectively absorbing and separating oil on the surface of wastewater through a simple structure. means of solving the problem

[0012] The present invention is characterized by comprising a storage tank for storing wastewater, a means for transporting and extracting oil that absorbs oil on the surface of the wastewater stored in the storage tank by an endless track-type MOP and transports it vertically, and extracts the oil water transported vertically by the MOP from the MOP, and a means for collecting the oil water extracted from the means for transporting and extracting oil and separating it into oil and water based on the difference in specific gravity. The means for transporting and extracting oil is configured such that an upper drive roller is installed at the upper center of the storage tank, left and right guide rollers are installed on both sides below the upper drive roller, and a lower guide roller is installed at the lower center. A pressure drive roller is installed correspondingly above the upper drive roller, and the MOP is vertically transported and compressed by the driving force of a drive motor to extract the oil water absorbed by the MOP. Additionally, a guide tray having an incline is installed at the lower position of the upper drive roller and the pressure drive roller of the means for transporting and extracting oil, so as to guide and supply the oil water extracted from the MOP to the means for separating oil and water.

[0013] According to the present invention, the oil-water separation means is characterized by being configured such that an oil-water storage unit in which oil supplied by a guide tray is stored is partitioned by a partition wall on one side of the interior of the main body, and an oil storage unit in which oil supplied to the oil-water storage unit is stored overflows. A water discharge port and a sludge discharge port are formed on one side of the lower portion of the oil-water storage unit, and an oil discharge port is formed on one side of the lower portion of the oil storage unit.

[0014] According to the present invention, the water outlet of the oil-water separation means is formed in the shape of a tube and inserted and installed so that its lower end is connected to a storage tank in a guide tube vertically formed in an oil-water storage section. The water outlet is characterized by having an uneven surface formed vertically on one side, and a locking lever having a locking projection formed on the upper outer side of the guide tube to engage with the uneven surface of the water outlet is installed to rotate elastically, thereby allowing the water outlet to move up and down to adjust its height position. Effects of the invention

[0016] The present invention effectively absorbs, extracts, and separates the oil on the surface of wastewater stored in a storage tank using an endless track-type MOP, vertically transports the oil, extracts the oil and water using a roller compression method driven by a driving motor, and then separates and discharges the oil and water based on the difference in specific gravity in an oil-water separation means, thereby having the effect of having superior efficiency of use compared to conventional methods.

[0017] In addition, the above-mentioned oil-water separation means can adjust the height of the water discharge pipe, thereby enabling more effective separation and discharge of oil and water according to the amount of oil-water inflow. Brief explanation of the drawing

[0019] FIG. 1 is a front view of the device of the present invention. FIG. 2 is a side view of FIG. 1. Fig. 3 is an enlarged configuration diagram of the key part of Fig. 1. FIG. 4 is a diagram showing the transfer and compression process of the MOP of the present invention. FIG. 5 is a front view of a key part showing another embodiment of a roller for compressing the MOP of the present invention. FIG. 6 is a cross-sectional view of a key part showing another embodiment of the oil-water separation means of the present invention. Fig. 7 is an operation diagram of the main part of Fig. 6. Specific details for implementing the invention

[0020] In order to explain the operational advantages of the present invention and the objectives achieved by the implementation of the present invention, preferred embodiments of the present invention are illustrated below and will be examined with reference to the accompanying drawings.

[0021] As shown in FIGS. 1 to 4, the vertical oil skimmer (100) using the belt-shaped MOP (oil adsorption pad) of the present invention is vertically installed in a drain pit, etc., in a relatively narrow and deep place such as a drain or drainage tank in a steel mill, oil refinery, petrochemical plant, etc., to separate and collect oil on the surface of wastewater by means of absorption by the MOP.

[0022] That is, the present invention is composed of a storage tank (10), a means for transferring and extracting oil and water (30), and a means for separating oil and water (50).

[0023] The above storage tank (10) is configured to store wastewater containing oil.

[0024] The above oil-water transport and extraction means (30) absorbs oil on the surface of wastewater stored in a storage tank using an MOP (31) formed in the form of an endless track using a polypropylene fiber material and transports it vertically. The MOP (31) is made of a polypropylene fiber material that does not absorb water but only oil, and is configured to continuously perform the process of absorbing and separating oil-water from wastewater with a structure that maximizes the contact area of ​​the wastewater.

[0025] The above-mentioned fluid transfer and extraction means (30) is configured to have an upper drive roller (41) installed at the upper center of the storage tank, left and right guide rollers (42) (42') installed on both sides of the upper drive roller, and a lower guide roller (43) installed at the lower center, and a pressure drive roller (44) installed on the upper drive roller (41) so as to rotate opposite each other by the driving force of a drive motor (M) to vertically transfer and compress the MOP (31) and extract the fluid absorbed by the MOP.

[0026] At this time, a reduction unit (35) is connected to the motor shaft of the drive motor, and the drive shaft (41a) of the upper drive roll is connected to the reduction unit. The drive shaft of the upper drive roll and the linkage shaft (44a) of the pressure drive roll are configured to mesh with gears (36)(36') so that the upper drive roll and the pressure drive roll rotate opposite each other.

[0027] In addition, the linkage shaft (44a) of the above-mentioned pressure drive roll is configured with adjustment screw parts (38) and (38') respectively installed on both upper sides to adjust the pressure level of the pressure drive roll.

[0028] In addition, the lower guide roller (43) does not guide the lower part of the MOP (31) in close contact, but is positioned on the inner lower side of the MOP (31) as shown in the drawing, thereby preventing the MOP (31) from rising above a certain position or shifting to the left or right, and allowing the MOP (31) to smoothly absorb oil from the surface of the wastewater.

[0029] And the above-mentioned pressure drive roll (44) is configured such that, as shown in FIG. 5, a water guide groove (44b) is formed on the outer surface in an inclined direction facing from the center to both sides, so that the water absorbed in the MOP (31) during the compression process with the upper drive roll is smoothly separated and discharged along the water guide groove.

[0030] In addition, a guide tray (45) having an incline (46) is installed at the lower position of the upper drive roll and the pressurizing drive roll of the above-mentioned oil and water transfer and extraction means (30) to guide and supply the oil and water extracted from the MOP (31) to the oil and water separation means (50).

[0031] At this time, the guide tray (45) is installed below the cover (48) that surrounds the upper drive roller (41) and the pressure drive roller (44), so that the water extracted by the compression of the MOP (31) from the upper drive roller (41) and the pressure drive roller (44) is guided to the guide tray (45) while preventing splashing in all directions.

[0032] The above oil-water separation means (50) is configured to collect oil and water supplied from the oil-water transport and extraction means and to separate and discharge oil and water based on the difference in specific gravity.

[0033] The above oil-water separation means (50) is configured to form an oil-water storage section (51a) in which oil supplied by a guide tray (45) is stored on one side of the interior of the main body (51), and an oil storage section (51b) in which oil supplied to the oil-water storage section is overflowed and stored, by partition wall (52), wherein a water discharge port (53) and a sludge discharge port (54) are formed on one side of the lower portion of the oil-water storage section, and an oil discharge port (55) is formed on one side of the lower portion of the oil storage section.

[0034] Additionally, the water outlet (53) of the above-mentioned oil-water separation means may be implemented differently as shown in FIGS. 6 and 7, in which the water outlet is formed in the shape of a tube and inserted into a guide tube (56) vertically formed in the oil-water storage unit so that the lower end is connected to the storage tank (10). The water outlet (53) has an uneven surface (53a) formed vertically on one side, and a locking lever (57) is installed on the upper outer side of the guide tube to rotate elastically, with a locking projection (57a) formed to engage with the uneven surface (53a) of the water outlet, thereby configuring the water outlet to move up and down to adjust the height position.

[0035] As for the unexplained symbols, 51a represents an overflow hole on one side of the upper part of the main body, 53b represents a shut-off valve for the water discharge port, 58 represents a spring return spring, and 59 represents an inclined plate installed at an angle inside the water storage part of the water separation means to guide the water supplied from the guide tray (45) at an angle.

[0037] Next, we will examine the operation and function of the present invention configured as described above.

[0038] The vertical oil skimmer (100) of the present invention is installed vertically in a drain pit, etc., in a relatively narrow and deep place such as a drain or drainage tank in a steel mill, oil refinery, petrochemical plant, etc.

[0039] First, the wastewater mixed with oil is stored in a storage tank (10).

[0040] And the oil on the surface of the wastewater stored in the above storage tank (10) is vertically moved and separated for collection by an absorption method using MOP.

[0041] To explain this more specifically, an MOP (31) formed in the shape of an endless track using a polypropylene fiber material is guided and installed on an upper drive roll (41), left and right guide rolls (42) (42') located on the lower sides of the upper drive roll, and a guide roll (43) in the lower center, and the upper drive roll (41) and the pressure drive roll (44) above the upper drive roll rotate opposite each other by the rotational driving force of a drive motor (M) to move the MOP (31) vertically.

[0042] That is, the lower part of the above MOP (31) settles on the surface of the wastewater in the storage tank and moves up and down, absorbing the oil on the surface of the wastewater together with the water in the form of flowing water.

[0043] In particular, since the above MOP (31) moves up and down in a spread-out state by the left and right guide rollers (42)(42'), the lower part that is sagging increases the contact area and contact time with the surface of the wastewater, thereby effectively absorbing the oil on the surface of the wastewater and moving.

[0044] In this way, the MOP (31), which absorbs oil, i.e., water, on the surface of the wastewater of the storage tank (10) and moves up and down, passes through the left guide roller (42) and then passes between the upper drive roller (41) and the pressurizing drive roller (44).

[0045] In this process, the liquid absorbed in the MOP (31) is extracted by the compression operation of the upper drive roll (41) and the pressure drive roll (44).

[0046] At this time, the pressure drive roll (44) forms a water guide groove (44b) on its outer surface in an inclined direction facing from the center to both sides as shown in FIG. 5, thereby increasing the compression efficiency of the water absorbed in the MOP (31) during the compression process with the upper drive roll, and also allowing the water extracted from the MOP (31) to be smoothly separated and discharged along the water guide groove (44b).

[0047] In addition, a cover (48) is wrapped around the outer side of the upper drive roll and the pressure drive roll to prevent the water extracted from the MOP (31) from splashing in all directions and to ensure that it all falls to the bottom.

[0048] In this way, the MOP (31), which extracts fluid between the upper drive roll and the pressure drive roll, is guided again by the right guide roll (42') and descends, then absorbs the oil on the closed surface of the storage tank and continuously repeats the process of moving vertically.

[0049] In this way, the liquid extracted from the above MOP (31) falls onto the ramp (46) of the guide tray (45) located below the cover (48) and is guided and supplied to the liquid separation means (50) along the ramp.

[0050] In this way, oil is stored in an oil storage section (51a) partitioned on one side of the main body (51) of the above-mentioned oil-water separation means, and the oil contained in the oil rises to the upper surface due to the difference in specific gravity.

[0051] In this way, oil is collected on the surface of the oil in the oil storage unit (51a) on one side of the main body (51), and as the water level of the oil storage unit rises, the oil in the wastewater is separated and collected over the partition wall (52) into the oil storage unit (51b).

[0052] In this state, the oil collected in the oil storage unit (51b) is collected separately, the water below the surface in the water storage unit (51a) is collected through the water discharge port (53), and the sludge adsorbed and transported together with the water from the wastewater is collected through the sludge discharge port (54), and the water discharged from the water discharge port is discharged back into the storage tank (10).

[0053] Meanwhile, the above-mentioned oil-water separation means of the present invention can be used by adjusting the height position of the upper part of the water discharge port in the oil-water storage unit by inserting and installing a guide pipe (56) vertically formed in the oil-water storage unit such that the lower end is connected to the storage tank (10), as shown in FIGS. 6 and 7, by forming a water discharge port (53) in the shape of a pipe.

[0054] This is so that when the water outlet (53) is moved up and down by an external force in the guide tube (56), the catch (57a) of the catch lever (57), which is axially installed to rotate elastically on one side of the upper guide tube, is elastically pressed against the uneven part (53a) formed vertically on one side of the water outlet, thereby maintaining the height adjustment state of the water outlet.

[0055] In this way, by adjusting the height position of the upper part of the water outlet (53), the timing of the separation operation of the water stored in the water storage unit (51a) can be easily adjusted to when the water level is low or high.

[0056] Accordingly, the present invention effectively absorbs, extracts, and separates the oil on the surface of wastewater stored in a storage tank (10) by means of an endless track-type MOP (31) and vertically transports it, extracts the oil and water by means of a roller compression method driven by a drive motor, and then separates and discharges the oil and water by means of a specific gravity difference in an oil-water separation means, thereby significantly improving the efficiency of use compared to the conventional method by effectively absorbing, extracting, and separating the oil on the surface of wastewater by means of a simple structure.

[0058] Although specific embodiments of the present invention have been described above by way of example, these are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. It will be obvious to those skilled in the art that various substitutions, modifications, and changes are possible within the scope of the technical spirit of the present invention. Explanation of the symbols

[0060] 10: Storage tank 30: Means for transferring and extracting fluid 31: MOP 41: Upper drive roll 42,42': Left and right guide rolls 43: Bottom guide roll 44: Pressure drive roller 45: Guide tray 46: Ramp 50: Oil-water separation means 51: Main body 51a: Water storage unit 51b: Oil reservoir 52: Bulkhead 53: Water outlet 54: Sludge outlet 55: Oil drain port 57: Locking lever

Claims

Claim 1 The apparatus comprises a storage tank (10) in which wastewater is stored, an oil-water transport and extraction means (30) that absorbs oil on the surface of the wastewater stored in the storage tank by means of an endless track formed using a polypropylene fiber material and transports it vertically, and extracts the oil-water transported vertically by means of the MOP (31), and an oil-water separation means (50) that collects the oil-water extracted from the oil-water transport and extraction means and separates and discharges it into oil and water based on the difference in specific gravity; The above MOP (31) is constructed with a structure that maximizes the contact area of ​​wastewater by being made of a polypropylene fiber material that does not allow water to adhere but only oil to adhere. The above-mentioned oil-water transfer and extraction means (30) is configured such that an upper drive roller (41) is installed at the upper center of the storage tank, left and right guide rollers (42) (42') are installed on both sides of the upper drive roller, and a lower guide roller (43) is installed at the lower center. A pressure drive roller (44) is installed correspondingly above the upper drive roller (41) so that the MOP (31) is vertically transferred and compressed by the driving force of the drive motor (M) to extract the oil-water absorbed by the MOP. The lower guide roller (43) is configured not to guide the lower part of the MOP (31) in close contact, but is positioned on the lower inner side of the MOP (31) as shown in the drawing to prevent the MOP (31) from rising above a certain position or shifting to the left or right. The upper drive roller and the pressure drive roller of the above-mentioned oil-water transfer and extraction means (30) are vertical A guide tray (45) having a ramp (46) at a lower position is installed to guide and supply the oil extracted from the MOP (31) to the oil-water separation means (50). The oil-water separation means (50) is configured to be partitioned by a partition wall (52) into an oil storage section (51a) in which the oil supplied by the guide tray (45) is stored and an oil storage section (51b) in which the oil supplied to the oil storage section is overflowed and stored. A water discharge port (53) and a sludge discharge port (54) are formed on one side of the lower portion of the oil storage section, and an oil discharge port (55) is formed on one side of the lower portion of the oil storage section.A vertical oil skimmer using MOP, characterized in that the above-mentioned water outlet (53) is formed in the shape of a pipe and inserted and installed so that its lower end is connected to a storage tank (10) in a guide pipe (56) formed vertically in the water storage section, and a locking lever (57) is installed on the upper outer side of the guide pipe to rotate elastically, with an uneven part (53a) formed vertically on one side of the water outlet (53) and a locking projection (57a) formed to engage with the uneven part (53a) of the water outlet, thereby allowing the water outlet to be moved up and down with a single touch to adjust the height position. Claim 2 delete Claim 3 delete

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