KR102187917B1 - Bubble removal apparatus - Google Patents

Abstract

The present invention relates to a bubble removal apparatus for blocking generation of bubble to remove the bubble when abrasive oil used for treating a surface of a coil plate. The bubble removal apparatus includes: a bubble removal tank having an inlet to receive the abrasive oil from upward and an outlet to exhaust the abrasive oil downward. The bubble removal tank guides the abrasive oil introduced from the upward through the inlet to an edge by an upper structure disposed at an upper portion of a tank body to freely fall the abrasive oil. The bubble removal tank changes flow of the abrasive oil toward a center region at an edge through a flow change hopper disposed at a lower portion of the upper structure to guide the abrasive oil downward. The bubble removal tank again guides the abrasive oil to the edge from the center through a flow change enclosure disposed at a lower side of the flow change hopper to change the flow thereof to fall to a lower portion of a tank body. After the abrasive oil is introduced into abrasive oil discharge tank disposed at a lower center of the tank body, the abrasive oil passes through an outlet connected with a plated oil discharge tank to be finally exhausted. A flow rate and a flow amount of the abrasive oil are controlled through a structural arrangement design which vertically positions the upper structure, the flow change hopper, and the flow change enclosure. According to the present invention, in order to treat a surface of a coil plate in a steel maker, abrasive oil used for an abrasive operation circulates to be recycled. When the abrasive oil circulates, a bubble removal apparatus of the present invention may be used to prevent bubble from being generated and to improve bubble removal efficiency. The present invention may remedy an existing demerit that medicine or manpower is used to remove bubble from the abrasive oil which circulates to be processed.

Description

Foam removal device{BUBBLE REMOVAL APPARATUS}

The present invention relates to a foam removal device for use in steelmakers, etc., and more particularly, to circulate the polishing oil used during polishing to surface-treat coil plates, etc. in steelmakers, etc. By controlling the flow rate and flow rate of the circulating abrasive oil by dispersing it, it prevents bubbles from being generated and improves the foam removal efficiency. Whether using chemicals or manpower to remove bubbles on the existing circulating abrasive oil It relates to a foam removal device that can improve the disadvantages.

In general, steel companies perform a process of removing surface defects through a polishing machine when defects occur on the strip surface due to various factors when producing coil plates, etc.. In order to reduce it, abrasive oil is essentially added and used.

In this way, a large amount of abrasive oil is used for surface treatment such as coil plates, and most of the abrasive oil used for surface treatment is equipped with a system in which it is recycled and reused without being disposed of.

However, there is a problem in that bubbles are generated when circulating the polishing oil as described above, and conventionally, chemicals are used to remove bubbles generated on the polishing oil to be circulated, and manpower is consumed.

On the other hand, when looking at the prior art documents, in the Korean Patent Registration No. 10-1838980 (hereinafter referred to as'Patent Document 1'), "the working oil is floating on the top of the working oil inside the storage tank storing the working oil. A casing disposed to be spaced apart from the foam, having an inlet and an outlet, and connected to the storage tank; And by being rotatably provided inside the casing, the foam is sucked into the inlet with a pressure difference according to rotation, and suction And a fan member for removing bubbles floating in the working oil by colliding and defoaming the bubbles and inducing them to be discharged to the outlet side after being changed to water droplets, and the casing includes the outlets respectively formed on the upper and lower sides of the circumferential surface. By expanding the discharge area of the water droplets, the foam removal rate inside the storage tank is increased, and the casing is disposed above the fan member and connected to the storage tank; the upper plate is disposed below the fan member, A lower plate having the suction port; and a ring body disposed between the upper plate and the lower plate and surrounding a circumference of the fan member, wherein the upper plate and the ring body are connected with a predetermined gap in the vertical direction. It proposes and discloses a foam removal device for a storage tank forming an upper discharge port.

However, Patent Document 1 is a foam removal device for working oil such as cutting oil or hydraulic oil used in machine tools such as lathes or cutting devices, and as a method using a power device such as a fan member, the present invention is a process for removing bubbles In addition to the structure, there are differences in processing methods.

In addition, in Korean Patent Registration No. 10-1373163 (hereinafter referred to as'Patent Document 2'), "in the device for removing bubbles generated in the electrolysis tank, the foam removal device is used in the circulation tank of the electrolytic cleaning line. In the apparatus for removing bubbles, a cylinder housing having a cylindrical shape with open upper and lower portions and having an inlet hole through which the bubbles are introduced; a piston ring that moves up and down along an inner circumferential surface of the cylinder housing; installed at a lower end of the cylinder housing Proposed and disclosed "a lower bracket that closes the opened lower part and has a discharge hole formed on one side thereof; and a foam removal device including a sponge ring installed in the cylinder housing and located above the lower bracket" have.

By the way, Patent Document 2 is a foam removal device used in the treatment of oily contaminants such as rolling oil used in the cold rolling process of a steel mill, which also differs from the present invention in a treatment structure for foam removal and a treatment method. .

In addition, in Korean Patent Registration No. 10-2081652 (hereinafter referred to as'Patent Document 3'), "a bubble detection unit that detects bubbles generated from the degreasing solution contained in the storage tank; an interface inside the storage tank. A foam removal unit having a nozzle portion for spraying an active agent; and a rotation unit for rotating the nozzle portion, wherein the foam detection unit includes a foam to open and close an overflow pipe formed through the outside and through the upper side of the storage tank. The floating hole floating on the surface, the floating hole is provided at one end, the other end is exposed to the outside of the storage tank, and the sensing rod is provided rotatably by axial coupling on the storage tank, and the floating hole is installed in a supportable structure. And a detection sensor for detecting the rotation of the detection rod due to the vertical movement of the foam, wherein the foam removal unit includes a reservoir for accommodating a surfactant, a rotation shaft rotatably supporting the nozzle part inside the storage tank, and the reservoir A first supply line receiving a surfactant from, a second supply line receiving pressurized air, a surfactant supplied by the first supply line, and pressurized air supplied by the second supply line are mixed. It proposes and discloses a foam removal device for a degreasing solution storage tank including a third supply line supplied to the nozzle unit.

By the way, Patent Document 3 is a foam removal device used in the treatment of rolling oil used in the cold rolling process of a steel mill, and a method of using a chemical such as a surfactant and using a power device, the present invention for foam removal In addition to the processing structure, there are differences in processing methods.

Korean Registered Patent Publication No. 10-1838980 Republic of Korea Patent Publication No. 10-1373163 Korean Patent Publication No. 10-2081652

The present invention solves the above-described problems and was devised in consideration of this, and prevents bubbles from being generated during reuse by circulating polishing oil used during polishing to surface treatment of coil plates in steel companies, etc. It is an object of the present invention to provide a foam removal device capable of improving the disadvantages of using chemicals to remove bubbles or manpower consumption on the existing circulating abrasive oil.

An object of the present invention is to provide a foam removal apparatus capable of blocking the generation of bubbles and removing bubbles by controlling the flow rate and flow rate of the circulating polishing oil by dispersing and discharging the polishing oil in various directions.

The present invention is to control the flow rate and flow rate of the polishing oil by combining the discharge method that induces overflow flow to the discharge method that disperses and treats the polishing oil in various directions to minimize the generation of bubbles and remove bubbles. The purpose of this is to provide a foam removal device that proposes a non-powered structural arrangement design that does not use a power device.

A foam removal device according to the present invention for achieving the above object is a foam removal device that blocks generation of bubbles and removes bubbles during circulation for reuse of the polishing oil, wherein the polishing oil is introduced from an upper direction to a lower direction. A foam removal tank unit having an inlet and an outlet for discharge treatment; Including, the bubble removing tank unit, the tank body of the upper open body having a discharge port on the lower surface; An upper structure that is fastened to the upper surface of the tank body and disposed on the upper side, and has an inlet port for introducing the polishing oil in the center of the upper surface, and has an edge guide slope for dropping by guiding the polishing oil from the center to the edge; A flow conversion hopper that is fixedly installed on the inside of the tank body so as to be located under the upper structure, and converts the flow so that the abrasive oil dropped through the upper structure flows from the edge portion and flows down toward the center; A flow conversion enclosure consisting of a flow conversion inclined portion fixedly installed inside the tank body so as to be located under the flow conversion hopper to receive the polishing oil passed through the flow conversion hopper and convert the flow from the center back to the edge; And a polishing oil discharge container having a lower end connected to a discharge port, which is fixedly installed inside the tank body and disposed in the center so as to be located under the flow conversion box. It characterized in that it comprises a.

delete

Here, the polishing oil discharge container is configured to distribute and store the polishing oil from the lower part of the tank body by integrally having a cross-shaped space distribution wing part distributed in all directions on the outer surface, and forming a concave-shaped cutout by cutting at the upper end Thus, it can be configured to induce an overflow flow for the abrasive oil distributed and stored in the lower portion of the tank body to be discharged.

Here, the tank body may be configured to have a hopper-type structure inclined downward with respect to the lower end to guide the flow of the polishing oil to the center and to induce smooth discharge.

Here, a drain pipe connected to the outlet is installed on the lower surface of the tank body, a butterfly valve for controlling the flow rate of the discharged abrasive oil on the drain pipe, and a sight glass for checking the flow rate and flow rate of the discharged abrasive oil Wow, it is possible to install a temperature sensor to block the occurrence of fire by sensing the temperature of the discharged abrasive oil.

Here, the foam removing tank unit may be installed to be positioned at a certain height from the ground by fastening or assembling supports having a predetermined length on both sides of the lower outer surface of the tank body.

According to the present invention, the polishing oil used in the polishing operation is circulated and reused in order to surface-treat the coil plate, etc. in steel companies, etc., it is possible to prevent bubbles from occurring and improve the foam removal efficiency when the polishing oil is circulated. It is possible to provide a foam removal device capable of improving the disadvantages of using chemicals or manpower to remove bubbles on the conventionally cycled abrasive oil.

According to the present invention, as a mechanical device providing a non-powered structural arrangement design for dispersing and discharging abrasive oil in various directions, it blocks the generation of bubbles and removes bubbles by controlling the flow rate and flow rate of the abrasive oil to be circulated. A defoaming device can be provided.

According to the present invention, there is provided a foam removal device that controls the flow rate and flow rate of the polishing oil through a configuration in which a discharge method for dispersing and treating the polishing oil in various directions is combined with a discharge method for inducing an overflow flow, Through this, it is possible to achieve a useful effect of preventing the generation of bubbles and effectively removing bubbles during circulation of the polishing oil.

1 is an installation state diagram showing a foam removal device according to an embodiment of the present invention.
2 is a front view showing a foam removal apparatus according to an embodiment of the present invention.
3 is a plan view showing a foam removal device according to an embodiment of the present invention.
Figure 4 is a side view showing a foam removal device according to an embodiment of the present invention.
5 is an exploded perspective view showing a foam removal device according to an embodiment of the present invention.
6 is a front cross-sectional view showing a foam removal device according to an embodiment of the present invention.
7 is a cross-sectional plan view showing a foam removal device according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view showing a foam removal device according to an embodiment of the present invention, and is a diagram showing a movement flow of grinding oil with arrows in order to explain the principle of foam removal through flow rate and flow control.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Terms used in the present invention are terms defined in consideration of functions in the present invention, and since these may vary according to the intention or custom of users or operators, the definitions of these terms correspond to the technical matters of the present invention. And should be interpreted as a concept.

1 to 7 of the accompanying drawings are views showing to describe the foam removal apparatus according to the present invention.

The foam removal device according to an embodiment of the present invention blocks the generation of bubbles and prevents bubbles by controlling the movement flow of the polishing oil using a non-powered structure when circulating for reuse of the polishing oil used in the polishing operation for surface treatment of coil plates, etc. As a mechanical device for removal, as shown in FIGS. 1 to 7, a foam removal tank unit 100 having an inlet 121 and an outlet 111 for discharging the polishing oil in the lower direction by inputting the polishing oil in the upper direction. ).

The foam removal tank unit 100 guides the abrasive oil input from the upper direction through the inlet 121 to the edge of the upper structure 120 disposed above the tank body 110, and then drops it. Through the flow conversion hopper 130 disposed on the lower side of the structure 120, the flow is converted from the edge to the center to induce downward, and through the flow conversion box 140 disposed under the flow conversion hopper 130 After guiding from the center to the edge again, the flow is converted to fall to the lower portion of the tank body 110, and after flowing into the polishing oil discharge container 150 disposed in the lower center of the tank body 110, the polishing oil discharge container 150 It may be provided to pass through the outlet 111 connected to the final discharge.

That is, by providing a non-powered structure using only the structural arrangement design in which the upper structure 120, the flow conversion hopper 130, and the flow conversion box 140 are placed up and down on the tank body 110, By controlling the flow rate and flow rate during circulation, the generation of bubbles can be blocked and bubbles can be removed.

More specifically, the foam removal tank unit 100 includes a tank body 110, an upper structure 120, a flow conversion hopper 130, a flow conversion box 140, a grinding oil discharge tank 150, and a drain pipe. It consists of a configuration including 160.

At this time, the foam removal tank unit 100 is installed to be located at a certain height from the ground through a configuration in which the support 170 having a certain length is fastened or fixed to both sides of the lower outer surface of the tank body 110. I can.

The tank body 110 is provided as an upper open body having an outlet 111 on a lower surface thereof, and may be provided in various bodies such as a polygonal structure such as a square or a circle.

Here, the tank body 110 may be configured to have a hopper-type structure inclined downward with respect to the lower end to guide the flow of the polishing oil to the lower center and to induce smooth discharge.

The upper structure 120 is fastened to the upper surface of the tank body 110 and disposed on the upper surface, and has an inlet 121 for inputting the polishing oil in the center of the upper surface, and when the polishing oil is injected, It is provided to have an edge-guided inclined portion 122 for inducing and falling in a downward direction.

Here, the edge guiding inclined portion 122 forms a path of a duct-like structure that guides the polishing oil from the center to the edge portion when the abrasive oil is introduced through the inlet 121.

Here, at least one opening for inducing fall is formed at an edge end of the edge inducing slope part 122.

The flow conversion hopper 130 is fixedly installed inside the tank body 110 so as to be located under the upper structure 110, and is guided to the edge through the upper structure 120 and then falls downward. It is a configuration that converts the flow of the abrasive oil so that it is received at the upper edge and flows down toward the center.

Here, the flow conversion hopper 130 has an inclined structure to control the flow rate and flow rate by inducing a flow from an upper edge portion to a lower center portion of the polishing oil, and may be formed to have a stepped inclined structure of two or more stages.

The flow conversion box 140 is fixedly installed on the inside of the tank body 110 so as to be located under the flow conversion hopper 130, and a through part 141 disposed in the lower center of the flow conversion hopper 130 Wow, as a casing-type structure integrally formed on the outer surface of the through part 141, the flow conversion inclined part 142 receives the polishing oil passed through the flow conversion hopper 130 and converts the flow from the center back to the edge. Can be done.

Here, the flow conversion box 140 rides the inclined surface of the upper surface to the edge of the polishing oil flowing downward through the flow conversion hopper 130 through the flow conversion inclined portion 142 which is an enclosure-type structure. Control the flow to flow and let it fall off the edge.

Through this, the polishing oil is induced to be stored in the inner lower end of the tank body 110.

Here, the through part 141 is a tubular body, and may be provided as a polygonal tubular body including a cylinder or a square cylinder.

The grinding oil discharge tank 150 is fixedly installed inside the tank body 110 to be located under the flow conversion box 140, and disposed under the through part 141 of the flow conversion box 140 And a configuration in which a plurality of polishing oil inflow holes 151 are formed to connect the lower end to the discharge port 111 and to inflow and discharge the polishing oil around the outer surface of the lower end.

Here, the polishing oil discharge container 150 may be integrally provided with a space-distributing wing portion 152 of a cross-shaped structure distributed in all directions on the outer surface.

Through this, the space distribution wing portion 152 arranged in a cross-shaped structure for the abrasive oil controlled to have a moving flow downward in the tank body 110 through the flow conversion inclined portion 142 of the flow conversion box 140 It can be distributed and stored in the lower portion of the tank body 110 by using as a partition member.

That is, the moving flow is controlled through the upper structure 120 positioned above and below the tank body 110, the flow conversion hopper 130, and the flow conversion box 140, so that the flow rate and flow rate are controlled in the tank body. Each of the lower portions of 110 can be distributed and stored.

In addition, the polishing oil discharge container 150 may have a concave groove-shaped cutout 153 at its upper end.

Here, when the abrasive oil distributed and stored in the lower portion of the tank body 110 is continuously supplied to the interior of the tank body 110, when the inflow amount exceeds the external discharge amount, the water level rises naturally, and the polishing It has an overflow (overflow) flow beyond the upper surface including the groove-shaped incision 153 of the oil discharge tank 150.

At this time, the concave-shaped cutout 153 is formed on the upper part of the polishing oil discharge container 150 and is located at the bottom of the flow conversion box 140, so that the polishing that rises to the polishing oil discharge container 150 through the polishing oil inlet hole 151 The space distribution wing portion 152 is distributed and stored in the lower portion of the tank body 110 in which the partition member is formed before the oil is transmitted to the through portion 141.

That is, the overflow flow naturally formed by the rise in the level of the polishing oil is guided downward through the groove-shaped cutout 153 of the polishing oil discharge container 150 in the tank body 110 to form a moving flow. The flow of the polishing oil can be controlled through the flow of external discharge, so that the flow rate and flow rate can be controlled, and the rapid flow rate can be prevented to prevent foam formation and remove bubbles.

Incidentally, the tank body 110 is stored internally by continuous input of the polishing oil, and discharged to the outside through the polishing oil inlet hole 151 of the polishing oil discharge container 150, at this time, the polishing inlet hole 151 As the limit of external discharge is generated, the water level rises. Accordingly, a moving flow and external discharge due to an overflow of the polishing oil are naturally formed, and the flow rate and flow rate of the polishing oil can be controlled.

That is, referring to FIG. 7, the amount of polishing oil flowing through the inlet 121 is discharged to the outside through the discharge port 111 through the polishing oil inlet hole 151, and at this time, an amount exceeding the discharge amount is introduced. If so, the amount of polishing oil beyond that is discharged to the upper surface of the flow conversion box 140 through the through portion 141 of the flow conversion box 140 through the polishing oil inlet hole 151 and falls through the flow conversion hopper 130. The flow is continued to the edge of the flow conversion box 140 through the flow conversion inclined portion 142 together with the polishing oil.

The drain pipe 160 is fixedly installed to be connected to an outlet 111 formed on the lower surface of the tank body 110.

Here, the drain pipe 160 may be provided with a butterfly valve 181 for controlling the flow rate of the polishing oil discharged from the tank body 110 to the outside via the polishing oil discharge container 150.

In addition, a sight glass 182 may be installed on the drain pipe 160 to check the flow rate and flow rate of the polishing oil discharged from the tank body 110 via the polishing oil discharge container 150.

In addition, a temperature sensor may be installed in the drain pipe 160 to sense the temperature of the polishing oil discharged from the tank body 110 via the polishing oil discharge container 150.

Through this, it can be configured to block the occurrence of fire due to the increase in temperature of the circulating abrasive oil.

The operation of the foam removal device according to the present invention and the principle of removing foam will be described as follows.

When the abrasive oil is injected into the foam removal tank unit 100 through the inlet 121 formed in the upper structure 120, it is primarily polished through the edge slope guide part 122, which is a duct-like path of the upper structure 120. The oil is guided from the center to the edge, and the abrasive oil is induced to fall downward through an opening for inducing a fall formed at the edge of the edge guide inclined portion 122.

In this way, the abrasive oil falling in the lower direction of the edge portion of the tank body 110 through the edge slope guide portion 122 of the upper structure 120 and the drop guide opening is received into the upper edge surface of the flow conversion hopper 130 and then the center It induces the furnace flow and makes it move downward.

That is, through the flow conversion hopper 130, the flow of the polishing oil is secondarily converted from the edge to the center.

Subsequently, the abrasive oil that flows along the upper edge of the flow conversion hopper 130 and guided to the lower center flows down to the flow conversion inclined portion 142 on the flow conversion enclosure 140 side, and flow conversion inclined portion 142 The flow is converted again to travel to the edge of the slope.

Through this, the polishing oil is stored at the lower end of the tank body 110 by thirdly inducing a flow conversion of the polishing oil and controlling the movement flow.

At this time, the moving flow is thirdly controlled by the flow conversion box 140 so that a part of the polishing oil stored at the lower end of the tank body 110 is through the polishing inflow hole 151 formed at the lower end of the polishing oil discharge container 150. It is discharged to the outside while flowing into the interior of the polishing oil discharge container 150, that is, to the space distribution type wing part 152 of a cross-shaped structure distributed in all directions of the polishing oil discharge container 150 disposed under the flow conversion box 140. As a result, while being distributed and stored at the lower end of the tank body 110, a part is finally discharged to the drain pipe 160 via the outlet 111 of the tank body 110.

In addition, the polishing oil is continuously introduced, and at this time, since the polishing oil is introduced in an amount greater than the limit of external discharge through the polishing oil inlet hole 151, the water level rises naturally in the lower portion of the tank body 110 and the tank body 110 The flow of movement is made to the upper end of the polishing oil discharge container 150, and accordingly, the polishing oil flows into the inside through the concave-shaped cutout 153 of the polishing oil discharge container 150, and then the discharge port of the tank body 110 It is finally discharged to the drain pipe 160 via 111.

In addition, when the water level rises on the tank body 110 by the limit amount of external discharge through the polishing oil inlet hole 151, when the water level rises further beyond the overflow, the through part of the flow conversion box 140 ( A moving flow is formed from the lower part of the 141 to the upper part, and the abrasive oil overflowing through the through part 141 flows back to the edge part along the upper slope of the flow conversion inclined part 142 on the flow conversion box 140 side. It will fall.

In addition, when the amount of polishing oil is no longer added or the amount is reduced, the polishing oil stored in the flow conversion box 140 gradually exits through the polishing oil inlet hole 151, thus solving the problem that a large amount of polishing oil is released at once. You will be able to.

That is, the foam removal apparatus of the present invention functions to remove bubbles by controlling the flow rate and flow rate of the polishing oil according to the continuous input and input amount of the polishing oil, and the above-described process is repeatedly performed.

As described above, the foam removal device according to the present invention, which has the above-described configuration and action, has only a non-powered structural arrangement design that does not use a power device, and disperses it in various directions for the abrasive oil that is introduced into the device to move flow. It is possible to provide an advantage of blocking the generation of bubbles and removing bubbles by continuously controlling the flow rate and flow rate of the polishing oil during operation of the apparatus through which the flow direction is changed.

Accordingly, the polishing oil used during polishing is circulated and reused in order to surface-treat the coil plate, etc. in steel companies, etc., but the present invention prevents bubbles from being generated and improves the foam removal efficiency when the polishing oil is circulated. In addition, it is possible to provide an advantage that can improve the disadvantages of using a chemical or manpower to remove bubbles on the conventionally cycled abrasive oil.

The embodiments described above are only to describe preferred embodiments of the present invention and are not limited to these embodiments, and within the scope of the technical spirit and claims described through the present invention, those skilled in the art It will be said that various modifications and variations can be made, which will fall within the scope of the technical rights of the present invention.

100: foam removal tank unit 110: tank body
111: outlet 120: upper structure
121: inlet 122: edge induction slope
130: flow conversion hopper 140: flow conversion enclosure
141: through portion 142: flow conversion slope portion
150: grinding oil outlet 151: grinding oil inflow hole
152: space distribution wing 160: drain pipe

Claims (7)

In the foam removal device that blocks the occurrence of foam and removes foam during circulation for reuse of abrasive oil,
A foam removal tank unit having an inlet port and an outlet port for discharging the abrasive oil in the upper direction and discharged in the lower direction; Including,
The foam removal tank unit,
The tank body of the upper open body having a discharge port on the lower surface;
An upper structure that is fastened to the upper surface of the tank body and disposed on the upper side, and has an inlet port for introducing the polishing oil in the center of the upper surface, and has an edge guide slope for dropping by guiding the polishing oil from the center to the edge;
A flow conversion hopper that is fixedly installed on the inside of the tank body so as to be located under the upper structure, and converts the flow so that the abrasive oil dropped through the upper structure flows from the edge portion and flows down toward the center;
A flow conversion enclosure consisting of a flow conversion inclined portion fixedly installed inside the tank body so as to be located under the flow conversion hopper to receive the polishing oil passed through the flow conversion hopper and convert the flow from the center back to the edge; And
A polishing oil discharge container having a lower end connected to a discharge port, which is fixedly installed and disposed in the center of the tank body so as to be located at the lower side of the flow conversion box; Foam removing device comprising a.
delete The method of claim 1,
The flow conversion box includes a through portion disposed in the center,
The polishing oil discharge cylinder has a plurality of polishing inflow holes formed around the outer surface of the lower end,
The through part is configured to be discharged by inducing an overflow flow with respect to the polishing oil by being connected to the polishing oil discharge container.
The method of claim 3,
The polishing oil discharge container,
It is configured to distribute and store polishing oil from the lower part of the tank body by integrally providing a wing for space distribution of a cross-shaped structure distributed in all directions on the outer surface,
Foam removing device, characterized in that configured to induce an overflow flow with respect to the abrasive oil distributed and stored in the lower portion of the tank body by forming a concave-shaped incision by cutting at the upper end.
The method of claim 1,
The tank body,
Foam removal device, characterized in that formed in a hopper-type structure inclined downward with respect to the lower end to guide the flow of the polishing oil to the center and to induce smooth discharge.
The method of claim 1,
A drain pipe connected to the discharge port is installed on the lower surface of the tank body,
On the drain pipe, a butterfly valve for controlling the flow rate of the discharged polishing oil, a sight glass for checking the flow rate and flow rate of the discharged polishing oil, and a temperature sensor for blocking fire by sensing the temperature of the discharged polishing oil are provided. Foam removal device, characterized in that to install.
The method of claim 1,
The foam removal tank unit,
A foam removal device, characterized in that the support base having a predetermined length is fastened or assembled on both sides of the lower outer surface of the tank body to be positioned at a predetermined height from the ground.

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